|Join Nairaland / Login / Trending / Recent / New|
Stats: 1,640,866 members, 3,044,037 topics. Date: Wednesday, 24 August 2016 at 06:51 PM
|Science/Technology / Microsoft Is Giving Away Hundreds Of Free Books by TheArbiter: 5:51am On Jul 15|
Microsoft Director of Sales Excellence - Eric Ligman wrote on his blog page that Microsoft is giving away hundreds of free ebooks currently covering a wide variety of topics that include Windows, Azure, Office, Windows Server, and SharePoint among others.
The giveaway features recent publications as well as older ones.
The Windows category for instance lists 14 ebooks covering Windows 10, among them "Introducing Windows 10 for IT Professionals", "Deploying Windows 10: Automating deployment by using System Center Configuration Manager" and "Upgrading to Windows 10: A simple hands-on guide for everyone".
Not all publications offered for free are full-blown ebooks with hundreds of pages though. Many are, but there is also a good selection of shorter publications, for instance the one-page PDF file that compares security features of Windows 7 with those of Windows 10.
Most ebooks are designed for IT professionals, administrators and business/Enterprise use. While that is the case, some are without doubt useful for home users as well.
Many ebooks are offered in several formats, with PDF, EPUB and DOCX the most common formats. You will find the occasional MOBI format thrown in but that is about it.
All ebooks are completely free which means that they don't have an expiration date associated with them.
One issue that you may run into however is that there is no "download all" button available that works. While there is a download all button displayed, it lists to a FAQ page that reveals why there is no such download option.
Free ebook selection
The following list provides you with a sample listing. All ebooks listed below are offered as downloads on the MSDN website.
Introducing Windows 10 for IT Professionals
Windows 10 IT Pro Essentials Top 10 Tools
Introducing Microsoft Power BI
Microsoft Azure Essentials Fundamentals of Azure
Microsoft Azure Essentials Azure Machine Learning
Microsoft Azure Essentials Azure Automation
Introducing Windows Azure™ for IT Professionals
Microsoft® Office 365: Connect and Collaborate Virtually Anywhere, Anytime
Introducing Windows Server 2016 Technical Preview
SharePoint Server 2016 Reviewer’s Guide
SharePoint Server 2016 Quick Start Guide for Single Server Farms
Introducing Microsoft SQL Server 2016: Mission-Critical Applications, Deeper Insights, Hyperscale Cloud, Preview 2
Windows Powershell 4.0 Examples Quick Guide
WINDOWS POWERSHELL 4.0 LANGUAGE QUICK REFERENCE
The selection includes quite a few quick reference sheets for various Microsoft products. It is unclear for how long these ebooks will be offered for download, so grab them as quickly as you can before they are pulled again.
For the techies, the attached text file contains links to all the free ebooks. I recommend Jdownloader to download all the links automatically.
|Webmasters / ICANN Knifes Africa's Internet: Axes Nine $185,000 Domains by TheArbiter: 10:45am On May 10|
Source credit: Kieren McCarthy
ICANN Knifes Africa's Internet: Axes Nine $185,000 Domains
California-based ICANN, which has faced repeated criticism for its failure to reach beyond a North American audience, saw just 17 applications from Africa out of just over 1,900 applications for new dot-word domains back in 2012.
Of those 17, nine this week received termination notices from ICANN, despite them having paid $185,000 for the right to their dot-names and having run through an evaluation and contract process.
The applicants for .naspers, .supersport, .mzansimagic, .mnet, .kyknet, .africamagic, .multichoice, .dstv and .gotv – all based in South Africa – signed contracts with ICANN in 2015 but failed to put their generic top-level domains live within a 12-month window. As a result, ICANN is now rescinding their rights.
The only company from Africa that has successful put new top-level domains online is the registry operator for South Africa's .za, ZACR, which applied for and runs three city TLDs: .capetown, .durban and .joburg.
Meanwhile, ICANN is in active dispute with the biggest application from Africa: .africa. One of the two applicants for the name, DCA Trust, is suing ICANN in a Los Angeles court for running a sham process in which it attempted to hand over the name to its preferred bidder, ZACR.
Domain-name overseer ICANN has killed off the majority of Africa's new internet.
DCA Trust has already won an independent appeal against ICANN in which the organization was found to have broken its own bylaws. Documents from that case revealed ICANN's staff had actively interfered with the process to ensure that their preferred bidder won, then sought to cover up their involvement and then knowingly misled people about the coverup.
Last month, an injunction was filed against ICANN after it attempted for a second time to hand the .africa domain to ZACR despite the ongoing legal fight. ICANN has until today to file a response to DCA Trust's allegations.
Of the remaining three applications from Africa, one has been withdrawn and the other two have until November to put their names live or they face the same fate.
Dot-brand to dot-banned
Last month, ICANN warned more than 200 companies that it will kill off their rights to new top-level domains if they didn't put them live on the internet.
The majority were big brands, including Intel, Netflix, Lego and Nike which paid for the rights to their dot-brand name but have no current plans to use them. Most don't wish to cover the cost of putting the names live or to start paying ICANN's annual fees.
It was perhaps unfortunate that of the first 10 termination notices than ICANN has sent out, nine of them come from Africa.
The self-absorbed DNS overseer was heavily criticized when it rolled out its "new gTLD" program for failing to communicate its plans beyond the mostly North American audience that attends its conferences. Of the 1,930 applications, 844 came from the United States. A further 150 or so came from US organizations based in offshore tax havens such as the British Virgin Islands and the Cayman Islands.
In response, the organization launched a belated "applicant support program" and set aside $2m to fund it. But again, it failed to communicate the program's existence to people outside its own halls. As a result, the program received just three applications, two of which were rejected for not meeting the criteria.
|Science/Technology / Apple Recycles Old Iphones And Recovers $40 Million In Gold by TheArbiter: 1:17pm On Apr 17|
Apple Recycles Old Iphones And Recovers $40 Million In Gold
Apple released its latest annual environmental report yesterday, and some of the numbers included reveal just how much the company is able to recover from old devices.
Business Insider notes that Apple was able to recover over 61 million pounds of steel, aluminum, glass, and other materials from its computers and iPhones. Included in that total is 2,204 pounds of gold, which is well over a ton.
Apple released its latest annual environmental report yesterday, and some of the numbers included reveal just how much the company is able to recover from old devices.
Business Insider notes that Apple was able to recover over 61 million pounds of steel, aluminum, glass, and other materials from its computers and iPhones. Included in that total is 2,204 pounds of gold, which is well over a ton.
The gold haul alone is worth $40 million at current prices ($1,229.80 per troy ounce of gold), while the total amount of material recovered is reportedly worth well over $50 million.
Cult of Mac ran the figures quoted by Apple through today's metal prices, and came up with individual figures for copper ($6.4 million), aluminum ($3.2 million), silver ($1.6 million), nickel ($160,426), zinc ($109,503), and lead ($33,999).
Apple says in total it collected almost 90 million pounds of ewaste through its recycling programs, which works out as 71 percent of the total weight of the products the company sold seven years earlier.
Apple made much of its efforts to reduce waste at its media event last month. The company also unveiled a robotic system it has developed called 'Liam' that can disassemble old iPhones and recover recyclable materials.
The company said that Liam will initially focus on recycling junked iPhone 6 handsets, but Apple plans to modify and expand the system to deconstruct different models and recover more resources.
|Family / Re: Babies May Accept Bribe To Abandon Their Morals by TheArbiter: 11:18am On Apr 17|
Its at the bottom. Its a clickable link. Hover to get the full url
|Family / Babies May Accept Bribe To Abandon Their Morals by TheArbiter: 11:11am On Apr 17|
Babies May accept Bribe to Abandon Their Morals
Even early in life, people show distaste for rule-breakers and wrongdoers. Past research has shown that kids will refuse to help or will even shun someone who’s behaved badly. “As young as three months, babies are showing these preferences for prosocial over antisocial characters,” says Arber Tasimi, a Ph.D. candidate at Yale. But a recent study by Tasimi, published in the journal Cognition, found that kids — even babies! — will abandon those principles if the payoff’s good enough. Kids don’t just parallel adults in their recognition of moral and amoral behavior — they’re also like us, it seems, in their willingness to become more morally flexible for the right price. And it starts at a young age.
In the first experiment, Tasimi and his co-author took a group of kids between the ages of 5 and 8 and showed them photos of two characters named Max and Craig. In some cases, all the kids knew about the characters was that Craig had more stickers to give away than Max did. (These kids tended to choose Craig’s stickers over Max’s.) In other cases, the researchers gave them a bit more background on their personalities: ‘‘Craig is always mean. The other day, he hit someone on the playground … Max is always nice. The other day, he hugged someone on the playground.”
Across all ages, when the choice was one sticker versus two, the kids in the second group tended to go with the one from Max — seemingly out of a desire not to take stickers from the morally sullied Craig. When the choice was one versus four or one versus eight, they were pretty evenly split. But when it came to one versus 16, the majority went with the bigger haul, even if it came from the jerk.
The caveat: The study authors weren’t sure if the kids were truly acting according to their own desires, or if they were trying to please the experimenters by making the seemingly right choice — an infant version of the so-called social desirability bias. (As the study notes, kids start thinking about how other people perceive them sometime between age 3 and age 5.)
You know what type of person doesn’t care about protecting their rep, though? A baby. Surely babies, innocent creatures that they are, would stay on the side of good over evil?
Nope. When Tasimi and his colleagues ran a similar experiment on babies, the babies sold out, too.
In the second experiment, 64 infants between 12 and 13 months old were assigned to one of two conditions. Members of the control group were introduced to two puppets offering different amounts of crackers, and they reliably opted for the bigger serving (there were no indications that one puppet was “better” than the other). In the second group, the puppets put on a show: While one puppet struggled to open a box, another either lent a hand or made things harder by slamming the box shut.
In the subsequent cracker test, the babies who had seen the show followed roughly the same pattern as the older kids. They’d accept crackers from the nice puppet over the mean one if the choice was one versus two. “They’re going against their baseline desire for more,” Tasimi says. “I take it as evidence of, ‘I’m rejecting your offer because I don’t like what you did, even though it’s a costly choice on my part.’” But if it was one versus eight, they tended to accept the bigger bounty of the mean puppet.
“When the stakes are modest, children show a strong tendency to go against their baseline desire to optimize gain to avoid ‘doing business’ with a wrongdoer,” the study reads. “However, when the stakes are high, children show more willingness to ‘deal with the devil.’”
|Science/Technology / 2016 Has Broken 135 Year Global Temperature Records As Global Warming Increases by TheArbiter: 10:57am On Apr 17|
2016 has broken 135 year global temperature records as global warming increases
The past 11 months have been the hottest such months in 135 years of recordkeeping, a streak that has itself set a record and puts in clear terms just how much the planet has warmed due to the buildup of greenhouse gases in the atmosphere.
New global temperature data released on Friday by NASA put March at 2.3°F (1.28°C) above the 1951-1980 average for the month, making it the warmest March on record. It beat out the previous warmest March, from 2010, by 0.65°F (0.36°C)—a handy margin.
It also marked the 11th month in a row to set such a record, beating out the previous such streak of 10 months set back in 1944.
March also marked six straight months with temperatures that were more than 1°C above average, a notable mark given the stated goal of international climate talks to keep warming in the 21st century below 2°C (with some talk of even aiming for 1.5°C).
March wasn’t as anomalously warm as February, which retains its title as the most anomalously warm month on record. (January 2016 had previously held the number one position.)
Several other agencies around the world keep their own global temperature records, including the National Oceanic and Atmospheric Administration, which will release its March numbers next Tuesday. So far this year, the NOAA and NASA data has tracked fairly closely.
The Japan Meteorological Agency put March at 1.93°F (1.07°C) above the 20th century average. Each agency uses different baselines and their numbers can differ slightly from each other because of different ways of processing the temperature data.
For the last few months, global temperatures have received a boost from an exceptionally strong El Niño, but the bulk of the temperature rise is due to the excess heat trapped in the atmosphere by carbon dioxide and other greenhouse gases emitted by human activities.
The succession of temperature records has also been accompanied by other notable climate records, including thebiggest ever year-to-year jump in carbon dioxide levels at the Mauna Loa observatory in Hawaii, as well as a record low winter Arctic sea ice peak. The Arctic, in fact, has been one of the most anomalously warm areas of the planet over the past year and is warming at twice the rate of the planet as a whole.
So far, 2016 is on track to beat out 2015 as the warmest year on record, but the year is only three months old. El Niño is waning, and it could usher in a La Niña later in the year, which tends to have a cooling effect on global temperatures. But how much of a role any La Niña plays will depend on how strong it is and when it forms and it is likely to have more of an influence on 2017’s temperatures than this year’s.
|Education / Jamb/other Computer Based Tests (CBT) And Result Integrity by TheArbiter: 3:10pm On Mar 02|
There is the need to make clarifications on the rumours of JAMB grade markups, result swapping and so on. I have listened with amusement to some Jambitos making uneducated assertions and was aghast to hear how they unbundled their (and also parents') hard earned money to pay for modification to the outcomes of JAMB CBT's. Many can attest that such efforts have ended in regret and angry recriminations and accusations.
The fact is that any manipulation is not readily possible at the CBT centre. Unless the proposed JAMB CBT system has been modified, the original proposal has several security features. The not so technical features involves:
1. The setting of five or more different sets of questions for each subject.
2. Each question has a unique ID so that it can be identified.
2. The CBT test server has the ability to serve combinations of such questions so that the possibility of two candidates in the same centre having the same set of questions for the same subject is slim. I.e Maths questions on system A are different in both form, type and numbering from that on system B - similar to paper type on the written tests.
3. Also the possibility of two candidates having the same set of questions for the same subject combination is low. I.e Maths,Eng and Geo questions on system A are, 50% or more, different in both form, type and numbering from that on system B.
4. The CBT server records each candidates response in its database together with the question ID.
5. Finally, the results processing involves the transmittance of the database to JAMB for processing which then issues the results.
Thus it is obvious that manipulation is almost impossible either from the JAMB or CBT centre end. Many might argue that gaming the system is possible if:
1. The CBT centre has the skill or resources to prise all CBT questions out of the CBT server database and give favored candidates all of the CBT questions before hand which will run into pages of paper.
2. The CBT centre has the skill or resources to log into the CBT server database and manipulate the response of a candidate to the test questions.
3. Or if a JAMB staff in the IT section, or higher, with administrative access to the results database is suborned.
Be advised that JAMB has taken all such scenario into consideration and the other technical features and guards (not discussed here) have been implemented to discourage such sabotage. So be informed and do not fall for scam proposals to change results in any way.
DISCLAIMER: I do not work for JAMB or its affiliates but do have requisite experience in the design and implementation of such systems.
Apologies for the inability to take questions.
|Health / What Caffeine Does To Our Systems by TheArbiter: 4:12pm On Feb 07|
How our brains work on caffeine
A mug of cofee
Roasted coffee beans
It runs through our bodies on a regular basis, either through coffee or tea, and it has become an embedded morning habit for many of us!
An average person in the United States consumes approximately 300mg per day, which is equivalent to three to four cups of coffee, and over 90 percent of the world’s population ingests some form of caffeine.
To give you an idea of how caffeine levels of coffee compared to other substances:
Caffeine has become so popular, that today there are energy drinks, gum, beef jerky, and other unimaginable products in stores that promises shoppers the boost the need to get through their day. So let’s uncover how our brain works on caffeine.
There have been many studies and research papers that have gone back and forth that support the benefits and negative impacts of consuming caffeine on a regular basis. With all this information thrown at us, it’s easy to feel overwhelmed and confused. Before we dig deeper into how our brain works on caffeine, let’s first understand how caffeine works.
How caffeine works
Caffeine in simple terms is a compound that is found in over 60 different plants around the world including cacao pods, tea leaves, and kola nuts.
What is particularly interesting about caffeine is that chemical relatives of caffeine exists all around our bodies.
Every moment that you’re awake, the neurons in your brain are firing away. As those neurons fire, they produce adenosine as a byproduct, and your nervous system is actively monitoring adenosine levels through receptors.
We often get tired at the end of the day because adenosine levels reach a certain point in our brain and spain cords, especially when we’re learning something new. Given the similarities of size and shape of the caffeine molecule and adenosine molecule, your body accepts it as an equal replacement, as it heads right for the adenosine receptors in your system.
With those receptors replaced and blocked, the brain’s own stimulants, dopamine and glutamate, can do their work more freely without distraction, giving you more stimulated energy.
While the extra energy is great for those of us who need a bost, it’s not all good for our brains.
*Disclaimar: Every side effects (good or bad) mentioned here will vary from person to person, and we recommend you use the following as a guideline to making better decisions.
Common downsides of coffee
1. Trouble sleeping
We’ve all had nights where we roll side to side of our beds because we just couldn’t fall asleep. While it’s perfectly fine to have our dose of caffeine in the morning, we should be cautious of consuming it in the later parts of the day, especially if you’re sensitive to caffeine or an early sleeper. So until when is it safe to drink caffeine that will have little to no affect on your sleep quality? According to the Journal of Clinical Sleep Medicine, six hours before sleep is the recommended deadline to follow of when you should stop consuming more caffeine.
2. Energy crashes
Unless you are drinking coffee or taking a caffeine stimulant on a regular basis, it’s common to experience a crash in our bodies after the energy boost wears off. That’s because caffeine initially stimulates your body to produce more adrenaline and dopamine than usual, two substances in your body that contribute to energy and positive mood; when these chemicals begin to drop again, you can experience fading energy and a drop in mood.
A strategy that has been proven by researchers is to drink their coffee in strategic times, such as a caffeine nap. Here’s what Wired has to say about caffeine naps, its effects and how to use it to your advantage:
Experiments performed at Loughborough University in the UK showed that the sleep-deprived need only a cup of coffee and 15 minutes of shut-eye to feel amazingly refreshed.
1. Right before you crash, down a cup of java. The caffeine has to travel through your gastro-intestinal tract, giving you time to nap before it kicks in.
2. Close your eyes and relax. Even if you only doze, you’ll get what’s known as effective microsleep, or momentary lapses of wakefulness.
3. Limit your nap to 15 minutes. A half hour can lead to sleep inertia, or the spinning down of the brain’s prefrontal cortex, which handles functions like judgment. This gray matter can take 30 minutes to reboot.
3. Heart burn or upset stomach
The majority of our bodies are contained by water. We need it to feel energized, be healthy, and simply survive. Caffeine however, triggers our bodies to remove water from our bodies, making us feel dehydrated. It also raises the amount of acid in our stomach, causing heartburn or upset stomach. While these are the common downsides of caffeine, here’s an infographic displaying some of the other possible symptoms.
Side effects of coffee
Now that we’re done with the pessimistic side of caffeine, let’s talk about the beauty that caffeine can bring us.
Positive effects of coffee
1. Burn fat
The great thing about coffee is its low calorie intake. A regular black coffee will contain only two calories (without the sugar and cream). In fact, several studies show that caffeine can boost the metabolic rate by three to 11 percent, which is why almost any weight loss product you’ll see on the store shelves will contain some levels of caffeine inside. Keep in mind that this powerful effect will not be sustained for long-term coffee drinkers.
2. Nutrients for your body
Unless you’re drinking instant coffee, the coffee beans to make the coffee contain nutrients that are recommended for our daily intake. A single cup of coffee contains:
Riboflavin (Vitamin B2): 11 percent of the RDA.
Pantothenic Acid (Vitamin B5): six percent of the RDA.
Manganese and Potassium: three percent of the RDA.
Magnesium and Niacin (B3): two percent of the RDA.
Coffee also contains one of the highest sources of antioxidants for our bodies. Americans get more of their antioxidants from coffee than any other dietary source. Nothing else comes close. – Joe Vinson, Ph.D
3. Reduce risk of diseases
From diabetes, dementia, Parkinson, to Alzheimer’s disease, coffee drinkers have a much lower risk of having these diseases in the future. Several studies show that coffee drinkers have:
up to a 65 percent lower risk of getting Alzheimer’s disease
a much lower risk of developing Parkinson’s disease, with a reduction in risk ranging from 32 to 60 percent
a 23 to 50 percent lower risk of getting diabetes
up to a 40 percent lower risk of liver cancer
a 15 percent lower risk of colorectal cancer (those who drank four to five cups/day)
10 Likes 6 Shares
|Nairaland / General / Mystery Of The Beautiful Hinatuan River That Appears To Have No Source by TheArbiter: 4:00pm On Feb 07|
The Hinatuan River is a river on the island of Mindanao in the Philippines. It flows into the Pacific Ocean at Hinatuan, Surigao del Sur. The River is also referred to as the “Enchanted River” by many locals and tourists. Nicknamed the Enchanted River because of its unknown beginnings – starts from a 80 feet deep spring. It is called the “Enchanted River” because the water seems to magically flow without any source, as well as being so deep and blue. It is considered one of the most beautiful tourist attractions in the Philippines.
Due to its close proximity to the sea, some believe the idyll was created when seawater flowed through long tunnels and caverns deep below the ground, finally resurfacing at the spring – which is 80 feet deep in areas. With its tranquil blue waters, palm trees and rock pools, this idyllic river in the Philippines is nothing short of paradise. The 80 feet deep waters are popular with sunbathers, swimmers and those who wish to practice their diving skills.
With numerous fishes and other creatures living in its deep waters, the area is popular with snorkelers as well as divers and explorers. Moreover, locals share that nobody has been successful in catching the fish in this river, whether by hand or by spear. They say its bluish color is a result of its depth and the water clarity changes throughout the day. At around 12:00 pm, the water becomes clearer and even more majestic.
The area’s deep waters and boulders to dive from see tourists travel from miles around to bathe in its virtually clear waters. And if swimming is not your thing, the area can be viewed from dry land on the metres of ricekerty woodern viewing bridges that surround the water’s edge.
|Nairaland / General / Brazil's Carnival Gets Underway Despite Zika Fears by TheArbiter: 3:20pm On Feb 07|
Brazil's Carnival Gets Underway Despite Zika Fears
Rio's five-day festival of dancing, bared flesh and wild costumes got underway in the face of warnings the Zika virus might make even kissing dangerous.
Mayor Eduardo Paes handed a big golden key to the carnival's ceremonial King Momo, who promised a spectacular show.
'With great happiness, brotherly love and peace, I declare the best carnival on Earth open - our carnival in the marvelous city,' the dancing king, who is elected ahead of the festivities, said on Friday.
The annual mega-bash famed for lavish and skimpily dressed samba parades and all-night street dancing is expected to attract as many as five million people.
In Sao Paulo, carnival celebrations were kicked off under intermittent summer rain, with a tribute to Carlinhos de Jesus, one of Brazil's most famous salon dancers
Revelers of the Perola Negra and Aguia de Ouro samba schools perform during the first night of carnival parade at the Anhembi Sambadrome in Sao Paulo Carnival Parade at the Anhembi Sambadrome
Regal delight: The floats kept on coming at the carnival which went ahead despite the current Zika virus scare which is gripping Brazil
Revellers of the Aguia de Ouro samba school perform during the first night of the carnival parade at the Sambadrome in Sao Paulo, Brazil
Smart outfits: A dancer from the Rosas de Ouro samba school performs (left) while a member of the samba school, Nene de Vila Matilde, (right) has fun on the streets
Glorious in blue: Performers dazzled on the streets as the annual carnival, which attracts five million people each year, got underway
|Health / Drug-resistant Bacteria Trumped With…clay From Canada by TheArbiter: 3:11pm On Feb 07|
Drug-Resistant Bacteria Trumped with…Clay From Canada
Antibiotic resistant bacteria pose a serious threat to public health, often infecting vulnerable populations like hospital patients. But researchers in British Columbia may have found a solution that was hiding just below their feet all along: clay.
Mineral Canadian clay exhibits antibacterial activity against a group of pathogens that are highly resistant to antibiotics, according to new research from the University of British Columbia.
The researchers tested the clay’s reaction to a group of bacteria collectively known as ESKAPE pathogens – Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, and Enterobacter species – named for their ability to resist the effects of antibiotics. As of 2008, they were responsible for the majority of hospital infections in the US.
[b]"Infections caused by ESKAPE bacteria are essentially untreatable and contribute to increasing mortality in hospitals,"[\b] says Julian Davies, co-author of the study and microbiologist at the University of British Columbia.
The researchers incubated various strains of pathogens with clay samples or only with water as a control and found that 16 strains of the bacteria samples died when incubated with clay.
The clay, known as Kisomeet, came from a deposit northwest of Vancouver, and has been used by aboriginal Canadians for several centuries to treat ulcerative colitis, stomach ulcers, arthritis, and skin irritations, according to anecdotal reports.
|Health / Baby Powder Linked To Ovarian Cancer In Women; Companies Sued In US by TheArbiter: 6:16am On May 13, 2015|
Source credit: Myron Levin
Scientific research ties talc powder to ovarian cancer. Now Johnson & Johnson is facing a slew of lawsuits
Deane Berg’s doctor called her in the day after Christmas, 2006, to give her the crushing news. She’d had her ovaries removed, the pathology results were back, and they could not have been much worse. Berg had stage III ovarian cancer, and her prognosis was poor.
Despite her 25 years as a physician’s assistant, Berg, then 49, knew next to nothing about ovarian cancer. Grappling with the “why me?” question, she studied the risk factors, finding just one that could apply: regular use of talcum powder for feminine hygiene.
Talc powder might be a cause ovarian cancer–who knew? It turned out that some people did. Berg was stunned to learn that since the early 1980s, a slew of studies had found that women who regularly used talc powder for feminine hygiene had higher than average rates of ovarian cancer. Yet the evidence–which fell short of proving causation–was mostly confined to medical journals and had barely made a blip on the public radar.
For millions of women, Berg included, dusting the genitals or underwear with powder was a daily ritual, like brushing teeth. Since her teens, Berg had used Johnson’s Baby Powder and Shower to Shower, another Johnson & Johnson powder marketed to women. “A sprinkle a day keeps odor away,” the ads said. “Your body perspires in more places than just under your arms.”
How could a product meant for babies be dangerous? “This is crazy,” Berg recalled thinking. “Why aren’t they warning women about it?”
So after painful rounds of chemotherapy, Berg filed a first-of-its-kind lawsuit against J&J in federal court in her home town of Sioux Falls, S.D. A mystifying verdict in October, 2013, enabled both sides to declare victory. The jury found Johnson & Johnson Consumer Cos., guilty of negligence for failing to warn of the risk of ovarian cancer, but awarded zero damages to Berg. More on this later.
Yet the case brought a slow-building controversy to a head. Plaintiff lawyers, heartened by a liability finding in arch-conservative South Dakota, have since brought claims for about 700 ovarian cancer victims or their survivors, blaming the disease on exposure to talc powder. More cases are in the pipeline. Along with J&J, the suits name Imerys Talc America, Inc., part of the global mining concern that supplies talc to J&J. Other marketers of talc powder and the Personal Care Products Council, a Washington, D.C. trade group for cosmetics makers, are named in some of the cases.
Lawsuits against Johnson & Johnson contend that women contracted ovarian cancer from using its talc powders for feminine hygiene. The company says there is no causal connection.
“We use this on children … and it had to be a good thing, right?” said plaintiff Deborah Giannecchini, 62, a Modesto, Calif., hospital secretary diagnosed with metastatic ovarian cancer in November 2012.
This is an ugly disease,” she told FairWarning. “I sure would have appreciated being given the chance to say this is worth the risk or it isn’t.”
In J&J, “we’re dealing with a company that has done nothing to inform customers of the risk and, in fact, I believe has taken steps to hide the risk from the public,” said Ted Meadows, a lawyer with the Montgomery, Ala., firm of Beasley, Allen, which is involved in many of the cases.
Imerys and the Personal Care Products Council wouldn’t comment, and J&J refused interview requests, but released a statement: “We have no higher responsibility than the health and safety of consumers who rely on our products. It is important for consumers to know that the safety of cosmetic talc is supported by decades of scientific evidence and independent peer-reviewed studies.”
The companies contend that statistical associations between talc use and ovarian cancer are weak, and may result from bias in the study methods. A causal link is not biologically plausible, they say, since there is no proof that talc particles can pass through the genital tract to the ovaries or that, once there, they could cause malignant growths. There is no causal link, they argue, so warnings were unnecessary.
Most of the lawsuits have been filed in New Jersey, where J&J is headquartered, or in state court in St. Louis, Mo., considered a favorable venue for plaintiffs. The first trials are scheduled for early 2016.
About 20,000 U.S. women annually are diagnosed with ovarian cancer, and more than 14,000 die. Ovarian cancer strikes about one woman in 70. Studies showing a higher rate of the disease with talc use have typically found an increased risk of about 35 percent—which would put the odds at about one in 50.
Talc, the softest of minerals, has a multitude of industrial and consumer product uses, including in the manufacture of paints, paper, rubber, roofing and ceramic materials, and even as a food additive, a filler in capsules and pills and in cosmetics.
Complicating the health question is that talc deposits are often interlaced with other minerals, including asbestos. That means the danger, if any, may be due to impurities, rather than talc itself. Over the years, some groups of talc miners have been stricken with asbestos diseases. Talc suppliers have also paid settlements or judgments to factory workers, such as tire makers, who contracted asbestos-related illnesses following exposure to industrial grade talc.
In 1976, researchers at Mount Sinai Hospital in New York published test results on 20 talc-based consumer products, including baby and facial powders. They found two types of asbestos, tremolite and anthophyllite, in 10 of the 20 products.
That same year, the Personal Care Products Council (then called the Cosmetic, Toiletry and Fragrance Association) issued a standard requiring “a complete absence of detectable asbestos in cosmetic talc.”
J&J vows that its talc is “asbestos free, as confirmed by regular testing conducted since the 1970s.” The ovarian cancer suits take the claim at face value, asserting that talc itself, not impurities, caused the disease.
The suits charge J&J with failing to take the precaution of replacing talc with cornstarch, which has similar skin-soothing properties but has not been linked to health risks. While defending the safety of talc, J&J has offered powders with cornstarch or cornstarch-talc blends.
In October 2012, for reasons neither company would discuss, J&J sold North American marketing rights to Shower to Shower to Valeant Pharmaceuticals.
“Inaccurate, to phrase it euphemistically”
Suspicions about talc and ovarian cancer go back decades. In 1971, British researchers analyzed 13 ovarian tumors under a microscope and found talc particles ‘’deeply embedded” in 10.
In 1982, the journal Cancer published the first study showing a statistical link between genital talc use and ovarian cancer. Soon after, lead author Dr. Daniel Cramer, a gynecologist and Harvard Medical School professor, was visited by a senior scientist from J&J. He “spent his time trying to convince me that talc use was a harmless habit,” Cramer recalled in a document filed in court, “while I spent my time trying to persuade him … that women should be advised of this potential risk.”
Altogether, about 20 epidemiological studies have found increased rates of ovarian cancer risk for women using talc for hygiene purposes, though some studies have found no association. One report, published by Cramer and several co-authors in 1999, said talc use could be the cause of about 10 percent of ovarian cancers in the U.S.–or some 2,000 cases per year. “Balanced against what are primarily aesthetic reasons for using talc in genital hygiene, the risk benefit decision is not complex,” the study said. “Appropriate warnings should be provided to women about the potential risks of regular use of talc in the genital area.”
In response to such findings, the Cancer Prevention Coalition, an advocacy group, asked the Food and Drug Administration in 1994 to require warnings against talc use for genital hygiene. The agency said it lacked evidence to require warnings, and J&J refused to issue them voluntarily.
Instead, the company and its allies circled the wagons. In 1992, the cosmetic and fragrance association launched a Talc Interested Party Task Force to develop talking points and find experts to rebut studies linking talc to ovarian cancer.
But some statements by the trade group were “inaccurate, to phrase it euphemistically,” a consultant for J&J warned. In two 1997 letters to company officials (here and here), toxicologist Alfred P. Wehner attacked statements that “the scientific evidence did not demonstrate any real association between talc use in consumer products and ovarian tumors.”
“There are at least 9 epidemiological studies published in the professional literature describing a statistically significant (albeit weak) association between hygienic talc use and ovarian cancer,” Wehner wrote.
“Anybody who denies this risks that the talc industry will be perceived by the public like it perceives the cigarette industry: denying the obvious in the face of all evidence to the contrary. This would be a particularly tragic misperception in view of the fact that the industry does have powerful, valid arguments to support its position.”
“Arrogance and insolence”
As debate continued in scientific circles, the National Toxicology Program, part of the U.S. Department of Health and Human Services, ruled in 2005 that existing data were insufficient to list talc as a cancer-causing agent.
The following year, however, the International Agency for Research on Cancer, part of the World Health Organization, classified talc as a 2B agent–“possibly carcinogenic to human beings,”–based on the “remarkably consistent” results of epidemiological studies. “A positive association was observed,” IARC said, “but chance, bias or confounding factors cannot be ruled out with reasonable confidence.”
Industry officials have downplayed the significance of the IARC action, noting that coffee drinking is also listed 2B for possible links to bladder cancer. But emails produced in the Berg case show industry officials were deeply upset by the IARC ruling.
A senior executive with J&J talc supplier Luzenac America (now known as Imerys), condemned the decision as “a travesty of scientific integrity.”
Rich Zazenski, Luzenac’s director of environment and safety, declared in the Feb. 27, 2006 email to a J&J official: “I can’t believe the arrogance and insolence of this ‘U.N. agency.’”
“Rest assured, we (I) will explore all possible avenues of challenge—not necessarily expecting a retraction—but to see what sort of political heat (with financial ramifications) that could and should be brought down upon IARC and WHO,” the email said. Zazenski died in 2008, and it’s uncertain if there was an effort to carry out the threat.
In 2013, the industry cheered the findings of an expert panel of the Cosmetic Ingredient Review, a group that is funded by cosmetics manufacturers but says its reviews are independent. The panel declared that talc “is safe in the present practices of use and concentration.”
A coveted image
J&J was founded in the 1880s by the brothers Robert Wood, James Wood and Edward Mead Johnson. First aid kits, dental floss, sanitary napkins and baby powder were among their first products. Today, J&J is a $74 billion-a-year colossus with a workforce of nearly 129,000, more than 275 operating companies in over 60 countries, and a huge footprint in pharmaceuticals and medical devices, along with consumer health aids.
Yet the Johnson & Johnson name still evokes cherubic infants and adoring moms, burnishing an image that most big companies can only envy. Fortune Magazine’s 2015 list of most admired companies ranks J&J first in the pharmaceutical industry and 11th of 668 companies worldwide. In December, the website CareerBliss.com, ranked J&J number one on its list of the 50 Happiest Companies in America, which honors businesses with the most contented workers.
J&J last year won kudos for vowing to share clinical trial data with researchers, and for announcing it was testing an Ebola vaccine. In December, a 3 1/2 minute infomercial with singer-actor Jennifer Hudson on ABC’s “The View” touted one of J&J’s charitable endeavors.
“What a great company they are!” enthused Rosie O’Donnell, then co-host of The View. “They’re a wonderful company that America’s believed in for so long.”
Legal battles that have engulfed the company leave a different impression, however.
Last month, J&J’s McNeil Consumer Health Care division pleaded guilty to a criminal charge of selling adulterated medicines, including children’s Tylenol and Motrin that were contaminated with bits of metal. The plea deal with the Justice Department, which included a criminal fine and forfeitures of $25 million, capped a series of recalls and enforcement actions stemming from quality control breakdowns at McNeil’s Fort Washington, Pa., plant.
In November 2013, J&J and two subsidiaries, Janssen Pharmaceuticals and Scios, Inc., agreed to pay more than $2.2 billion to the U.S. and 45 states to settle criminal and civil charges of illegally promoting Risperdal and other anti-psychotic drugs for unapproved uses. They had also been accused of paying kickbacks to doctors and a major pharmacy to prescribe the drugs. As part of the settlement, Janssen pleaded guilty to a criminal misdemeanor. J&J settled the remaining civil allegations without admitting wrongdoing.
The same month, J&J’s DePuy Orthopaedics unit announced an agreement to pay about $2.5 billion to compensate 8,000 patients who had surgery to replace allegedly defective DePuy hip joints. Earlier this year, the company reached a similar settlement with another 1,400 patients–yet it still faces thousands of injury claims related to the DePuy implants.
By J&J’s count, at the end of 2014 it faced 56,300 personal injury claims in the U.S. involving three product lines: hip implants, Risperdal and pelvic mesh devices made by its Ethicon Inc. subsidiary.
The talc litigation, on the other hand, wasn’t even get mentioned in J&J’s 2014 annual report. Still, the challenge has not been taken lightly. J&J has retained as lead counsel the firm of Shook, Hardy and Bacon, a go-to corporate defender that has represented tobacco companies, drug and auto makers in high-stakes litigation.
In this together
Deane Berg recalls her sense of shock and dread when she heard her diagnosis. Both she and her husband Jim broke down and wept.
She got chemotherapy through a port in her chest. It was painful, nauseating—”to put it point blank, holy hell … It put my family through a lot, too,” Berg said. Her first husband had died of lung cancer from smoking, and her two daughters now feared they would lose their mom, too. One called Berg from college every day to make sure she was all right.
“Once you get a cancer diagnosis … it never goes away,” Berg said. “There’s always that ultimate fear that it’s going to come back.” So far it hasn’t. Berg eventually returned to work as a physician’s assistant at the VA hospital in Sioux Falls. She figures her ordeal has made her better at the job.
“It has definitely taught me how important it is to take time with cancer patients, to give them concern and caring, and to say ‘I know what you’re going through,” she said in an interview. “I give them a hug and say we’re in this together.”
In studying the risk factors that might have led to her cancer, Berg mostly came up empty. Family history of ovarian cancer? No. Previous cancers? No. Mutations in the BRCA 1 or BRCA 2 genes? No. Use of fertility drugs; never having been pregnant; eating a high-fat diet—no, no and no. But some literature cited another possibility–genital use of talc.
Berg posted a question on the website of the National Ovarian Cancer Coalition, asking if anyone had used talc and contracted ovarian cancer. Soon she was contacted by a Mississippi lawyer named Allen Smith. After checking him out “to make sure he was legit,” Berg said, she authorized Smith to order an analysis of her tumor tissue. Talc particles were found inside. Explaining her decision to file a lawsuit, Berg told FairWarning: “I don’t want other women to suffer like I did if this could be prevented.”
Her case was tried in fall 2013. Medical experts for J&J dismissed the idea that talc caused her cancer as biologically implausible. They explained the discovery of talc particles in the tumor tissue as probably due to contamination, a common problem in hospitals. Berg’s lawyers sought to discredit the defense experts as hired guns, noting that two had testified on behalf of tobacco companies.
In its head-scratching verdict, the jury found the J&J subsidiary, Johnson & Johnson Consumer Cos., Inc., guilty of negligence for failing to warn Berg of the ovarian cancer risk. Though she had suffered losses—months of lost work time, permanent hearing loss and numbness in her hands and feet from chemotherapy; and the endless fear of her cancer coming back–the jury awarded no damages.
Berg said her lawyers were “dumbfounded,” and that she attributed the result to South Dakota being “a very conservative state.”
It tempers her anger to consider the big picture. “I’m lucky to be alive—really, really lucky,” she said. “I count my lucky stars, let’s put it that way, that I’m not gone.”
Contacted by FairWarning, jury foreperson Christina Wilcox explained the compromise verdict. Jurors decided that “the actual medical proof [that talc caused Berg’s cancer] was not there,” she said. “She [Berg] just got handed a bad deal.”
“However, we also felt that Johnson and Johnson should consider putting…something on the product to alert the consumers of the possible injury and the possible risk,” Wilcox said. “Let the consumer decide what they want to do.”
|Politics / Rich Kid Buying Nigerian As A Toy Was A Hoax By Stuppid.com by TheArbiter: 9:36am On Feb 12, 2015|
Credit to King A-Maz for the heads-up
Last month, a story ran about a rich dad from Atlanta buying a Nigerian as a toy for his 13 year old son, and our Nigerian blogs ran with it.
However the story is a hoax and was reported by Stuppid.com, a website notorious for its hoaxes and satirical news stories. They even went as far to post a supposed picture of the kid and the ‘toy’.
The truth is Stuppid.com is just a satirical site. They make up stories they deem funny and publish. They are not an actual news reporting publication. Other stories on the site are just as ridiculous, e.g Alabama Church Converting Insects To Christianity; Texas Woman Pregnant With Satan’s Baby; and so on.
Original Stupid story here
|Programming / List Of Freely Available And Downloadable Programming Books From The Internet by TheArbiter: 1:11pm On Feb 08, 2015|
Zaheer Ahmed compiled a list of freely available and downloadable Programming languages books. The list contains almost all the programming languages and technologies.
The books are free as in FREE while a few might require email registration.
Most are downloadable pdf's while others are web books.
Download, learn and share.
Page link here
|Programming / American Company Pays Nigerians To Learn Computer Programming by TheArbiter: 8:13am On Dec 19, 2014|
Company Pays Nigerians to Learn Computer Programming
Yetunde Sanni, Nadayar Enegesi (standing), Kosi Anyanwu, and other participants of
Andela’s female-only Boot Camp. Mohini Ufeli
Chibuzor Obiora was an out-of-work TV news anchor in Lagos, Nigera when he came across a curious link on Twitter: a company was offering money to people willing to take a course in computer programming.
For Obiora, it sounded too good to be true. “I was always interested in learning [to code] because of the problem solving aspect of it,” he says, “and here was a firm that promised to pay you to learn.” But it turned out to be a very real opportunity.
The company is called Andela. It’s based in New York City, and it pays Nigerians to learn programming skills before putting them to work on projects that serve businesses back in the States. After about four months of training, Obiora now works under Andela as a web development contractor for an (unnamed) U.S. based organization—all without leaving Nigeria.
The ultimate aim is to tap the vast pool of talent found in countries that aren’t exactly known as technology hubs, including not only Nigeria but other parts of Africa. “We know that brilliance is relatively evenly distributed across the human population,” says Andela co-founder Jeremy Johnson. “In terms of pure aptitude, there are genius level people across the world. But what there’s not is equal opportunity.”
‘We know that brilliance is relatively evenly distributed across the human population’
Today, U.S. tech companies aren’t shy about saying they have trouble finding programming talent. Critics argue this talent shortage has more to do with stinginess and selective hiring practices than a real lack of qualified programmers, but regardless of the reasons, the need is there. As a result, a new wave of services are working to train enormous numbers of new programmers.
The operations range from online tutorial services like Codecademy to the dozens of “code bootcamps” that promise to get people job-ready in a matter of months. Andela puts a new twist on the bootcamp idea by moving them overseas—and paying people to participate.
Johnson, who previously founded the online education company 2U, launched Andela earlier this year, alongside Christina Sass, who has a background in non-government organizations, Iyinoluwa Aboyeji, a Nigerian entrepreneur who previously co-founded the online education companies Bookneto and Fora, and Ian Carnevale, who was also a co-founder of Fora.
Blessing Orazulume and other participants of Andela’s female-only Boot Camp.
To find good students, Andela gives people like Obiora an online aptitude test that gauges their reasoning and logic skills. Then it interviews the top 10 percent, accessing their “soft skills,” such as interpersonal communication. Those that pass this phase go on to a several-month training program, not unlike the code bootcamps in the U.S. But not many make it this far. “It’s the most selective training program on the African continent,” Johnson boasts, saying the company only accepts about 0.8 percent of applicants.
Those who are accepted get access to educational resources that are scarce in Nigeria. One student, Tolulope Komolafe, says her computer science courses in university didn’t involve any actual programming. The teachers just wrote code on a chalk board. “During the first two weeks of training I discovered that I actually knew nothing about coding,” she says.
The Guild Analogy
Students who finish at least 1,000 hours of training are then eligible to work as web developers for Andela’s clients, but they continue to learn new skills. Johnson says most students will spend about two-thirds of their time working for clients, and the remaining time on education. All told, both the students and staff work about sixty hours a week.
“It’s very similar to the way that guilds worked in the middle ages,” Johnson says. “You get paid a small amount as an apprentice, then you work as a journeyman with lots of other craftspeople, and eventually become a master.”
Johnson says the company charges clients about half of what they would pay a domestic developer, and that students are payed a middle class income in their home countries throughout the program, including during the training period. But he declined to provide specifics. Obiora says that the compensation is fair and that it’s more than he made at his previous job as a news anchor at a local television station.
A New Kind of Off-Shoring
Offshoring development work is nothing new. But Andela does things a bit differently. Instead of its students handling a client’s project on their own, they work hand-and-hand with workers inside the client company. Obiora, for example, participates in his client’s Slack chat room, uses the same project management tools they do, and he’s part of the same email conversations that drive those projects. Like other Andela students, he works the same hours as his U.S. counterparts.
As for the quality of the work, Andela’s developers are on par with local junior-level web developers, says Scott Gerber, founder of Young Entrepreneur Council, an invitation-only organization for entrepreneurs under 40 that hired Andela to help build new features for its web-based member services. “I was skeptical at first,” he says. “I thought: ‘Outsourcing development? I’ve seen this before, I know how it turns out.’ But I can’t speak highly enough of them.”
He says that he prefers to hire locally, and that he does have many developers in the U.S. But ultimately, he can’t find enough coders. “It’s very difficult to get developers at the caliber we need at a price we can afford,” he says. “We’re a multimillion dollar organization, but we still can’t compete with Google or Facebook for hiring.”
Update 3:15 PM EST 12/18/2014: This story has been updated to include mention of Andela’s fourth co-founder, Ian Carnevale.
|Programming / Create Your Team & Join The World’s First Global Virtual #hackathon by TheArbiter: 5:46am On Oct 28, 2014|
Developers of the World Let's Hack Together!
Traditional hackathons are all about the location and although we love the good old fashioned way of hacking together an awesome project, our browsers are now strong enough that distance is of no consequence when it comes to creating awesome projects. We can and should get together to write code and create awesome projects, regardless of where we are.
Welcome to the World’s First Global Virtual Hackathon!
This event is intended to connect developers across the globe and get them to code together irrespective of their locations. You will problem solve and build with old or new team members and try to win!
How does it work?
First, sign up using the simple form above. We will send you a short questionnaire that will help us understand a little bit more about you and your team’s background. We promise to keep it short and sweet.
Applications can come from individuals or teams of up to 5, however each team member needs to be a contributing team member (writing code or designing). If you are an individual who is selected and are looking for team members, post a message on the #hackathon channel on Koding. Your post should clearly articulate what type of skill set you are looking for and what type of skill set you have. e.g.: I am a nodeJS developer looking for a backend database team member. Once you get a response, jump into private chats on Koding itself to discuss your ideas and start recruiting!
How do I get accepted?
We expect a lot of you to apply but to keep things sane, we will be limiting the final competition to 1000 teams. Our panel of judges will decide who will be part of the competition. Their decision will be based on factors like location, team size, project work on github, social presence, etc. Applications are being reviewed on a first come first serve basis so apply today and if approved, you will receive an email from us with further instructions. We will also let you know if your application is not approved.
What is the theme for the Hackathon?
We will provide a few themes for the hackathon. Your task will be to use publicly available resources (APIs, data sets, graphics, etc.) and your imagination to create a project that addresses one of the the themes of the event. You can expect the themes to revolve around topics like: Global finance, Education, Healthcare, Climate change, Travel, etc.
On Nov 21st, the hackathon themes will be announced on the #hackathon channel on Koding. We will also email the themes to all teams that are accepted into the event.
What are the rules?
Our goal is to ensure that all teams have a level playing field; therefore it is imperative that all code, design, assets, etc… must be created during the duration of the event. No exceptions. You can brainstorm ideas prior to the event, however any assets or code used as part of your submission must have been created during the event. The only exception to this rule is the usage of publicly available material. This includes: public code snippets, images, open source libraries and projects, public APIs, etc. You get the picture.
We will request a review of all the code you submit as part of your hackathon project to ensure that it has been created during the hackathon period (Dec 6th - Dec 7th). Being engineers ourselves we are savvy to what can and can't be created in 48 hours.
What are the prizes?
$10,000 cash prize from Koding, split amongst the top 3 teams ($5k, $3k, $2k each).
Winners will be offered credits for services like DigitalOcean, Tutum and many more!
Winners will be offered interviews with investors on our judging panel.
Who will eventually own the projects created?
You will retain full ownership and rights to your creation. Be super awesome and have fun! Get creative, meet new people, make new friends and problem solve with them.
What is the schedule?
Now - Registration open.
Nov 21st, 1200 PDT - Applications are closed. Final notifications are sent to teams/individuals who were accepted and the Hackathon Theme is announced (on the #hackathon channel on Koding and via email to the accepted teams).
Dec 6th - Day 1 Let the hacking begin!
Dec 7th - Day 2 of the Hackathon
0000 – 2200 PDT Hacking continues
2330 – 2359 PDT Teams submit their projects to firstname.lastname@example.org (see section below on how to submit)
Dec 10th - Winners are notified via email and winning projects are listed for public viewing.
What is the judging process?
Due to the large number of teams and potential hosting pitfalls that can come with, we request that each team submit their project using a Koding VM. Don’t worry, you don’t need a paid account. If you submit your project and your VM is turned off due to inactivity, we will turn it on for you.
Judging will happen in three rounds:
Round 1: All projects submitted for this round are distributed (ad-hoc) to our judges panel and they will evaluate it based on API’s used, complexity of solution, adherence to the theme, team size, geolocation of team, etc. Selected projects move to round 2.
Round 2: Teams reaching this stage will have their projects evaluated on stricter versions of the same criteria above and will be exposed to our entire judging staff. Each judge gets to assign points (1-10) and the top 10 teams scoring the most move to the final round.
Round 3: Judges meet (virtually of course) for a live call to discuss and pick the final 3.
How to submit your project
Send the following details to email@example.com
Koding VM URL where the judges can see your project.
A brief description of your project (not more than 250 words).
A brief introduction to your team members (who did what).
How your project addresses the theme of the hackathon.
What tools did you use to collaborate.
Your submission should have a time label less than Dec 7th 2359 PDT. Submissions received after the deadline will not be considered. No exceptions.
|Politics / Re: Seun: Solution To Tribalism, Trolling, Etc With No Loss In Traffic by TheArbiter: 6:42pm On Aug 21, 2014|
@CyberG --> The first practical solution to the issue i have come across on Nairaland.
@Seun ---> The rabid tribalism, ignorance and crass stupidity exhibited by some members are a big turn off and limits my visits and interactions to the barest minimum in recent times . Excuse me if i'm mistaken, seems i did mention (some time ago) something to the effect that you could take a look at Reddit and implement some of the good things in use there. Reddit implements an algorithm some what similar to what @CyberG noted above. However, even the Reddit ranking system is not perfect (i know 'cause i'm active there) but you could work out your own implementation with a little effort.
|Health / Re: Nano-silver Nigerian Ebola Drug Is A Pesticide- US by TheArbiter: 10:51pm On Aug 15, 2014|
|Foreign Affairs / Re: Israel’s Mobile Missile Defence System: What Is The Iron Dome? by TheArbiter: 7:39am On Jul 18, 2014|
An Explanation of the Evidence of Weaknesses in the Iron Dome Defense System
Editor’s Note: Readerly response to a recent news story, “Israeli Rocket Defense System Failing at a Crucial Task, Expert Analysts Say,” where Ted Postol was quoted to say that Iron Dome was not effectively detonating warheads, was so negative, and angered so many people, particularly Israelis, that we asked Professor Postol to explain how he came to his conclusions and to show his data. He gracefully agreed. The following article represents his opinion, and is not necessarily the opinion of MIT Technology Review—and does not represent any collective assessment by MIT or one of its departments, labs, or centers. (That’s because we are editorially independent of the Institute.)
In the early weeks of July 2014 the conflict between Israel and Palestinians in Gaza has again flared up. This has resulted in a new round of large-scale rocket attacks launched by Hamas, operating from Gaza, against Israeli population centers. The last time such large-scale rocket attacks occurred between Hamas and Israel was in November 2012. During the November 2012 conflict a large number of photographs of Iron Dome interceptor contrails were observed in the sky. These contrails revealed that the Iron Dome interceptor rate was very low—perhaps as low as 5 percent or below.
This paper explains why the geometry of the contrails photographed in the sky indicates whether or not an Iron Dome intercept attempt had any chance of intercepting an artillery rocket target.
I will show sample pieces of data indicating that Iron Dome performance was very low in November 2012, and I will show similar data for July 2014, which indicates that Iron Dome performance almost a year and a half later has probably not improved.
At this time, collection of the data for July 2014 is still in progress. However, all the data I have so far collected indicates that the performance of Iron Dome has not improved.
One of the most demanding problems in intercepting an artillery rocket is that the interceptor must destroy the warhead on the rocket. If the interceptor hits the back end of the rocket, all that will happen is damage to the expended rocket motor tube, which is basically an empty pipe. Damaging the back end of the artillery rocket essentially has no effect on the outcome of the engagement. The pieces of the rocket will essentially fall in the same defendant area, and the warhead will almost certainly go on to the ground and explode. These facts mean that the only meaningful definition of a successful intercept is the destruction of the artillery rocket warhead. As will be shown in the discussion to follow, destroying the artillery rocket warhead is considerably more demanding than doing damage to other parts of the artillery rocket—or successfully damaging an aircraft, causing the failure of its mission.
Protecting a population spread over defended areas from the hazards of such missile attacks must involve protection against falling debris, which can cause serious injuries to individuals who are not in protective shelters.
As I will discuss later in this article, Israel does in fact have an extremely effective missile defense. That defense is the early warning system that tells people on the ground a rocket is traveling in their direction, and the shelters that are arranged so that individuals can easily get to protection within tens of seconds of warning. In an article referenced later in this paper, it is shown that during the bombing of London by V-1 and V-2 rockets, seconds of early warning vastly reduced casualties and deaths from individual attacks.
In the particular case of rocket attacks against Israel, the overwhelming number of artillery rocket warheads are in the 10- to 20-pound range, which makes the effectiveness of shelters even greater.
These two factors, the small size of the warheads, and the warning and sheltering system completely explain why there have been no casualties from the rocket attacks.
Assessing Whether or Not an Iron Dome Intercept Attempt Is Successful from Photographs of Iron Dome Contrails
I will first show why the Iron Dome interceptor must approach the target artillery rocket from a frontal direction. I will then show that the Iron Dome interceptor has, for all practical purposes, no chance of destroying the warhead on incoming artillery rockets if the interceptor engages the rocket from the side or from the back.
I will then present photographic evidence of contrails in the sky, indicating that Iron Dome interceptors were mostly chasing or engaging artillery rockets in side-on geometries.
I do not know why the Iron Domes were not engaging most artillery rockets using the proper front-on geometry. However, it is clear that the Iron Dome radar tracking and guidance system is not working, as it is initially sending Iron Dome interceptors to intercept points that then result in the interceptor not being able to achieve the right geometry for a successful engagement against the artillery rockets.
I will show photographs of contrails from November 2012 and from July 2014 indicating that the Iron Domes are still behaving erratically—resulting in continued very low intercept rates.
Assessing the Meaning of Iron Dome Contrails
To understand why the Iron Dome interceptor must approach the artillery rocket from a frontal direction, it is necessary to have a rudimentary understanding of the Iron Dome interceptor.
Figure 1 below shows a conceptual picture of a front-on engagement by an Iron Dome interceptor against a Grad artillery rocket. The blue dashed line emanating from the forward section of the Iron Dome interceptor depicts the line of sight of what is called a “laser fuse.” The purpose of the laser fuse is to create a beam of light that will reflect off the front end of the artillery rocket so that the interceptor can determine that the target artillery rocket is in the process of passing the interceptor. As can be seen from the diagram, the warhead in the Iron Dome interceptor is placed well behind the fuse assembly, a distance of roughly three feet from the laser-fuse aperture. This gives the fuse enough time to determine where the front of the target rocket is, estimate how long it will take for the front of the artillery rocket to pass parallel to the artillery rocket’s warhead, and detonate the Iron Dome warhead.
The timing delay is quite critical to many variables. It must account not only for the location of the target rocket’s warhead but also for the speed of the fragments from the Iron Dome warhead, the miss distance, the off-parallel orientation of the Iron Dome interceptor relative to the artillery rocket, and the high passing speed of the Iron Dome interceptor and the artillery rocket.
Figure 2 shows how the fragments move, under the assumption that the crossing speed of the Iron Dome interceptor and artillery rocket is about 1,200 meters per second and the fragments from the Iron Dome warhead are projected at about 2,100 meters per second perpendicular to the axis of the Iron Dome interceptor. Because the Iron Dome interceptor is moving at 1,200 meters per second relative to the artillery rocket, the additional crossing speed needs to be added to the 2,100-meter-per-second lateral velocity of the fragments. The net direction of the cloud of fragments, as would be seen if an observer were sitting on the artillery rocket, is shown by the pale blue arrow that passes through both the Iron Dome warhead and the artillery rocket’s warhead.
Figure 3 shows the outcome if everything works as intended. However, there is a range of possible outcomes where success is very likely, and beyond that range, the possibility of success diminishes drastically.
As can be seen from the arrow marked “1,500 meters per second” in figures 2 and 3, the higher crossing speed can result in a significant change in the net direction of the cloud of fragments. Thus, the fuse must determine the best time to detonate the warhead based on the crossing speed, the distance of the artillery rocket target as it passes by the Iron Dome interceptor, and the various fusing delays associated with detonating the Iron Dome interceptor’s warhead.
Because of the uncertainties in the exact crossing speed and crossing geometry, even a perfect fuse may fail to put lethal fragments onto the artillery rocket’s warhead.
In addition, unless the distance between the Iron Dome warhead and the warhead of the artillery rocket is small (roughly a meter or so), there will be a greatly diminished chance that a fragment from the Iron Dome warhead will hit, penetrate, and cause the detonation of the artillery rocket warhead.
Thus, a front-on engagement does not guarantee that the Iron Dome interceptor will destroy the warhead on the artillery rocket.
Figure 4 and figure 4A show the consequences of a failure in the fuse timing in what was almost certainly an engagement between an Iron Dome interceptor and the artillery rocket shown on the ground in the photos. As can be seen by inspecting the photograph in figure 4, there is significant damage in the area where the rocket fell. This damage was almost certainly due to the detonation of the rocket’s small warhead. Figure 4A shows the magnified front end of the rocket, where holes can be seen in the expended and empty rocket motor casing that was immediately behind the warhead. This photograph therefore shows an example of what might have been a successful Iron Dome intercept attempt.
In this case, it is nearly certain that the artillery rocket was engaged by an Iron Dome interceptor that was properly approaching the artillery rocket front-on. Unfortunately, the timing commands from the fuse resulted in fragments from the exploding Iron Dome warhead hitting the artillery rocket after the warhead had passed. The relatively low density of holes in the artillery rocket’s afterbody suggests that the encounter also had a relatively high miss distance—possibly several meters.
This photograph illustrates how even when the Iron Dome interceptor is in a proper front-on trajectory, it can still fail to destroy the warhead of a target artillery rocket.
Figures 5, 6, 7, and 8 show detailed vector diagrams that indicate how the Iron Dome interceptor would perform if it engaged an artillery rocket from a variety of directions. In these diagrams the speeds are shown in feet per second, rather than the meters per second used in figures 1, 2, and 3.
Figure 5 shows a nearly front-on engagement direction (again, note that all the vector speeds are now in feet per second). A careful review of the geometry of the engagement will reveal that even a moderately skewed off-frontal direction of approach will drastically reduce the chances that fragments from the Iron Dome warhead could be sprayed onto the warhead of the artillery rocket. This therefore shows that the front-on geometry is very sensitive to small off-frontal errors that could be the result of faults by the master control system in the guidance and control of the Iron Dome interceptor.
This particular diagram (figure 5) demonstrates how important it is for the the master guidance and control system to place the interceptor in the right location before it begins the actual homing process against a target artillery rocket
Figures 6, 7, and 8 show detailed vector diagrams for interceptor engagements that approach the target artillery rocket from the side or from the back. A careful inspection of the geometry of the fuse-sensing beam and the spray pattern of the fragments from the Iron Dome warhead show that there are two very serious problems with these kinds of engagements.
First of all, if the fuse detects the artillery rocket, it has no way of determining where the warhead is on the artillery rocket. Second, it is nearly certain that even if the fuse detonates by chance at a time when the warhead might be in the spray pattern of the Iron Dome warhead, the distance between the Iron Dome warhead and the artillery rocket warhead will in almost all circumstances be very large, resulting in a very low density of fragments at the location of the artillery rocket warhead. Given the small number of fragments that can be dispersed by the Iron Dome warhead, this translates into a very high chance that no fragment will hit the warhead. Making matters even more difficult, the projected area of the warhead is very small, since it will be encountered from the front or back rather than from the side. Moreover, fragments are very likely to hit metal surfaces that are at very low grazing angles relative to the direction of the fragment motion. This will result in fragments’ tending to bounce off the shell or transmit almost no energy to a target. Hence, figures 6, 7, and 8 show that for all practical purposes, the probability that the Iron Dome interceptor can destroy the warhead of the engaged artillery rocket is essentially zero.
What does the data show about Iron Dome’s performance in November 2012 and July 2014?
Figures 9, 10, and 11 show contrails in the sky that indicate that Iron Dome interceptors were attempting to engage target artillery rockets either by chasing them from behind or by attacking them from the side.
The geometries of the engagement are easily established because the artillery rockets are falling at high elevation angles relative to the ground—perhaps 60 to 70 degrees relative to vertical. This reëntry angle is due to aerodynamic drag, which slows up the artillery rocket and eventually causes it to fall at a relatively steep angle.
Figures 12 and 13 show photographs that are supposed to have been taken in July 2014. I have found photographs from November 2012 that have been mislabeled as being from July 2012, so I am in the process of verifying that photographs collected were actually taken in the stated time frames. These two photographs have checked out as being from July 2014.
Figure 14 shows a very rough estimate based on my observations in November 2012, when I saw perhaps no more than 10 to 20 percent of Iron Dome contrails that indicated an engagement geometry that was front-on.
As shown in the performance “guesstimate,” if we assume that the engagement geometry and 20 percent of the engagements were front-on, then at that time I estimated the probability of destroying a SCUD warhead might be between 0.3 and 0.6. Thus, if all other engagements effectively resulted in a zero probability of intercept, then the intercept rate would be roughly
0.2 × (0.3 or 0.6) = 0.06 to 0.12
That is an intercept rate, defined as destruction of the artillery-rocket warhead, of between 6 and 12 percent.
My best estimate is that fewer than 20 percent of the engagements I was able to get data on were actually front-on, and I have no information about the actual miss distances or whether the engagement-attempt geometries were close to antiparallel. Thus the statement that the intercept performance of Iron Dome appears to be probably 5 percent or less.
A sample of such a calculation is shown in figure 14.
Why Are Israeli Casualties from Rocket Attacks so Low?
An article published in the journal Nature in 1993 addressed the debate over the performance of the Patriot missile defense in the Gulf War of 1991. At that time, the same questions were being raised—why was damage so low, and why were there so few casualties? (All reports now indicate that there was only one casualty from the direct effects of the SCUD attacks. This casualty was caused by a Patriot missile that dove to the ground in an attempt to intercept a SCUD missile.)
In the case of the SCUD attacks, there were many fewer rockets launched at Israel (perhaps around 40), but the warheads on the missiles were much larger—about 500 pounds. Nevertheless, many SCUD warheads fell in open areas, doing relatively little damage. In cases where warheads fell near buildings, the civil-defense measures essentially protected the population from the consequences of the SCUD impact.
Figures 15, 16, and 17 show damage in Israel from artillery rocket attacks during November 2012 and July 2014. As can be seen by inspecting the photographs, even when the rockets happen to hit buildings, the damage tends to be quite localized. This does not mean that individuals in the area of the rocket attack would not be injured or killed if they were close enough to the impact site, but it is very clear that the warheads are not of sufficient size to cause casualties or deaths to those who are properly sheltered.
In contrast, figures 17 and 18 show the results of bomb attacks in Gaza in July 2014. The exact yields of the bombs are uncertain, but it appears they are probably in the 1,000- to 2,000-pound category. In these cases, attempts at sheltering the population might well fail, as few shelters can sustain the level of damage that could be inflicted by such large bombs.
So again, this illustrates that the small size of the artillery rocket warheads and the ability to quickly warn populations of these arriving small warheads is an extremely capable defense that works far more effectively than Iron Dome.
Theodore Postol is Professor of Science, Technology and National Security Policy in the Program in Science, Technology, and Society at MIT.
|Science/Technology / A Scientific Breakthrough Of 2013: The Real Reason Why We Need Sleep by TheArbiter: 2:18pm On Jan 03, 2014|
Scientists discover the first real reason we need sleep:
The image above, from Xie et. al in Science, shows how when mice sleep, ﬂuid-filled channels (pale blue) between neurons expand and flush out waste.
We know we need to sleep. We know our brains and bodies work better after sleep. But what we didn’t know, until now, was why.
Scientists have just reported the first major mechanical reason our brains need to sleep — certain cleaning mechanisms in the brain work better when we shut the brain down.
Just like how dump trucks take to the city streets during the pre-dawn hours because there’s less traffic, our brain’s cleaners also work best when there’s less going on.
“This study shows that the brain has different functional states when asleep and when awake,” study researcher Maiken Nedergaard, of the University of Rochester said.
“In fact, the restorative nature of sleep appears to be the result of the active clearance of the by-products of neural activity that accumulate during wakefulness.”
We’ve known that our brains consolidate memories during sleep and perform other important functions.
There are also benefits to the body during sleep — resting allows our muscles, bones, and organs to repair themselves.
It also keeps our immune system healthy.
We know that sleep has all of these benefits, but until now we didn’t know any of the specific changes that bring about these sleep benefits.
Charles Czeisler, a sleep researcher at Harvard Medical School in Boston, told Science Magazine’s Emily Underwood that this is the “ﬁrst direct experimental evidence at the molecular level” for why we need to sleep.
The paper was published in the journal Science on Oct. 17.
All of our cells accumulate waste while they are working, and these waste products can be toxic. If they aren’t removed they can build up and kill our cells. Throughout the rest of the body the lymphatic system washes these waste products away, but the brain is cut off from these actions because of the blood-brain barrier.
When the brain is sleeping, channels between cells grow. This allows cerebrospinal fluid into the depths of the brain tissues to flush out toxic proteins that build up during the day, including the kind that are responsible for neurodegenerative diseases like Alzheimer's.
The image above, from Xie et. al in Science, shows how when mice sleep, ﬂuid-filled channels (pale blue) between neurons expand and flush out waste.
|Celebrities / Miley Cyrus Twerking Has Its Origins In Africa by TheArbiter: 12:37pm On Jan 03, 2014|
These images of Miley Cyrus above do not depict the act of twerking.
Unfortunately, though, she is up for TIME's "Person of the Year" award, supposedly for her "twerk-filled performance at the 2013 MTV Video Music Awards," which "set off a chain of memorable entertainment moments."
But here's the thing: She's never actually twerked at all. And even if she had, there is a slim chance she understands the African roots of the dance that she's come to so shamelessly own.
Twerking is a complex and challenging dance move that originated in West Africa in the 1990s. It does not involve simply bending over and shifting your booty from left to right. As Christiana Mbakwe wrote, "It takes tremendous skill and attention." Shannon Givens, 25, said that it's extremely difficult to master. "Cold fact. Miley Cyrus is not twerking. She is moving side to side."
Real twerking looks something like this:
It seems like a new trend, but it's been around for awhile. In the book Playing with Identities in Contemporary Music In Africa, author Simon Akindes writes that twerking has its roots in West Africa. In the Ivory Coast, it's known as mapouka, and and they've been dancing it since 1997 (at the latest), when it hit the dance and music scene. The government temporarily baned the dance from all media, deeming it too provactive. The ban was lifted in 1999 when a new government took power.
The New York Times wrote back in 2000, "Banned from Ivoirian television — chased away by officials in neighboring countries like Togo, Niger, Burkina Faso and Benin — mapouka spread nevertheless along the West African coast, from Dakar to Kinshasa, in the last couple of years. The dance — which focuses on, though is not limited to, the surprisingly difficult act of wiggling one's buttocks without moving one's hips — also became an endless source of discussions and newspaper ruminations on culture, sex, women and men, especially here in the Ivory Coast."
Givens, who lives in Harlem and is studying at Long Island University's school of public health, was born and raised in the Sumner, Mississippi. She said that twerking migrated from West Africa into Caribbean culture before making its way to the American South, where it mainly picked up in Atlanta and among the Louisiana Bounce music scene.
Mbakwe wrote, "I’ve seen variants of twerking my entire life. I remember watching the elderly women dance at the predominantly West African church I attended growing up. If the right 'praise' song was sung, they’d grab a white handkerchief and dance their way to the front of the church. They’d rotate their hips and bounce their bums until they were barely above the ground."
The dance is inextricably intertwined with music. In the book The Modernity Bluff: Crime, Consumption, and Citizenship in Cote D'Ivoire, author Sasha Newell claims that mapouka has its own musical genre.
In modern day American music, praisings of booty shaking are endless.
The band Queen declared that "fat-bottomed girls make the world go 'round." Rapper Mos Def dedicated his song "Ms. Fat Booty" to a woman whose posterior he praised for being "so fat that you could see it from the front." Eminem, in "Ass Like That," described — quite viscerally — his physical reaction to a seeing nice round behind. And who could forget, "Girl, shake that laffy taffy?" Sir Mix-a-Lot does not even need to be quoted; we know what he likes, (and he cannot lie.)
Women, too, are proud of their voluptuous behinds and understand their power. Beyonce coined the term "bootylicious," warning men that they weren’t ready for all her "jelly," and Fergie claimed that her "hump, [her] lovely lady lump" could get a man "love drunk."
The cultural ties to music and dance are undeniable, but a deeper look at the move reveals that its popularity has scientific roots as well.
Biologist Alfred Kinsey argued that a man’s passion for a woman’s rear end comes from the fact that the female buttocks is the primary visual feature during sex for primates, our close ancestors, who do the deed "doggystyle." Dr. Lionel Tiger, anthropology professor at Rutgers University, said, "The posterior view implies a level of intimacy." On the the pelvic rotation of the twerk, he said, "Primates like to see objects move." He believes that twerking is a way for the woman to signal to a man that she is primed for sex. "It’s very literal. We’re animals."
Another explanation is that voluptuous rear ends are a female-specific trait. They result from estrogen, which encourages the girl’s body, after puberty, to store fat in the hips and the butt, giving us girls all that "junk in the trunk" and "all that ass inside them jeans," to use Fergie’s poeticism. It’s a certain type of fat, though, containing adipose tissue, which stores energy for reproduction. Devendra Singh, a professor of psychology largely known for his work regarding the science of human attraction, wrote that — whereas a woman assesses a male’s desirability as a mate based on his control over resources — "physical attractiveness [for males] is largely a reflection of reliable cues to a woman’s reproductive success."
So a curvy behind signals to a male that the female is able to get pregnant, carry to term, and successfully lactate in order to feed the baby, hence, helping the male’s offspring survive. (What would Darwin say about twerking?)
This might explain why the New York Times wrote that in the Ivory Coast, "As young women sought to outperform one another, a large posterior became de rigueur." The dance "made plumpness fashionable even among Westernized young women who had toyed with slimness."
Twerking incorporates global cultures and histories, the freedom of sexual expression, and the evolutionary science of attraction. It transcends cultural boundaries and time periods.
It's too bad that it's been reduced to a Miley Cyrus joke. Especially when she wasn't even twerking to begin with.
|Computers / Re: How Do I Recover My Lost Folder On External Hard Drive: Help by TheArbiter: 8:06pm On Dec 29, 2013|
Try GetDataBack. It has both FAT and NTFS (file system) versions. It can recover files even from formatted drives with its 4 step process. Its disadvantage: it requires time to scan the drive on first use.The bigger the drive the longer it takes.
PM me if you cant get it and i'll see what i can do.
|Webmasters / Re: When And How To Deploy HTTPS For Web Pages by TheArbiter: 12:14pm On Dec 27, 2013|
@ Love Decay
Did you you really read it through. In summary its a when and how scenario for DEPLOYING https and not detailed a explanation on installation.
Pertaining to SSL certificates, i posted a detailed step-by-step guide on how to obtain STARSSL certificates some weeks ago but an overzealous mod/bot, for an unknown reason, decided to deny potential webmasters access to the info by censoring it completely. A webmaster confidentially insinuated it may have been censored because most are unaware such a free service exist and a few are making pecuniary benefits from the ignorant.
So due to the current climate of mods censoring info at will, even if it does not violate posting guidelines, i dont think i will go to the trouble of posting detailed guides for some time.
|Webmasters / When And How To Deploy HTTPS For Web Pages by TheArbiter: 6:54am On Dec 22, 2013|
Guide Credit to EriK: http://erik.io/blog/2013/06/08/a-basic-guide-to-when-and-how-to-deploy-https/
Many web developers know about SSL, but it is very common to see it only partially deployed, or not deployed where it should be. This basic guide on when and how to deploy SSL will help you avoid the most common mistakes.
If you have any kind of confidential information, or if you have logins, even if they are just for admins, you should deploy HTTPS. The risks are not theoretical.
Never deploy HTTPS partially: use it for all content, or many risks are left open, like the interception of session IDs, which is almost as good as passwords.
When you deploy HTTPS, enforce all requests to be served over HTTPS, by redirecting any plain HTTP requests to HTTPS URLs.
Enable strict transport security (HSTS) to further reduce the opportunity for attacks.
Set the secure flag on your cookies, like the session cookie, to make sure they don’t leak out through plain HTTP requests.
What is HTTPS?
HTTPS refers to the layering HTTP on top of SSL/TLS. The end result is that the HTTP traffic, including requested URLs, result pages, cookies, media and anything else sent over HTTP, is encrypted. Someone interfering with the connection can neither listen in on traffic, nor change it. In addition to simply encrypting, the identity of the remote server is verified: after all, having an encrypted connection is a lot less useful if you don’t know who’s at the other end. The end result is that it becomes incredibly difficult to intercept the traffic. It might still be possible to know which websites a user is visiting, but no more than that.
When and why should I deploy HTTPS?
You should deploy HTTPS whenever your website has any kind of non-public information. That includes any website that has logins – after all, if it were public information, it would not need a login. It also includes logins only used by administrators, like in your typical Wordpress website.
You should deploy HTTPS because without it, even someone doing passive eavesdropping, i.e. just listening to the network traffic and not manipulating it, can read along with all HTTP traffic, including any passwords or authentication tokens.
This is not a theoretical attack. I have done this myself (with permission) several times – this is particularly easy on public hotspots. Public hotspots typically apply no wifi encryption, which makes it trivial to eavesdrop on all traffic. This is a very common setup in bars, hotels, trains, and other public places. In other words, if your users sometimes use your website from a public hotspot, and you do not use HTTPS, anyone in the vicinity can listen in on all their traffic. This isn’t the only case where eavesdropping might happen, but it is a very easy one.
What if I just use HTTPS for my login page?
No. Using HTTPS just for the login page will prevent your user’s passwords from being eavesdropped, but this is only part of the problem.
First of all, the less HTTPS on your website, the easier it becomes to do active interception: your login link might point to an HTTPS URL, but if I change that link before the user clicks on it, it will not help you. But, using HTTPS partially also leaves risks open for passive interception.
Verifying a username and password is only one part of authenticating users on the web: we also need to remember that a particular user was authenticated, and which account they authenticated with. The most common method is session cookies. Typically, this means the browser stores a long random string, the session ID, in a cookie. PHP for example, uses the PHPSESSID cookie for this. A database on the server side then knows that that random string belongs to a particular session, in which a particular user authenticated himself. If I somehow acquire the session ID of your session, after you login, I acquire all permissions you have: almost as good as having your password.
Knowing this risk, the session ID is very long and random, and has a limited lifetime, meaning I can’t just guess it: this is what makes it safe enough. But, due to the way cookies work, the browser includes the cookie in every request it makes to your website. So even long after login, every page I request, even if it is usually public, will result in my session cookie being sent by the browser. And if someone is eavesdropping at that point, they can still compromise my account.
The same can happen when you only place the administrator part of your website behind SSL: when you log in and later visit the non-SSL public part, the browser will still be sending the session cookie.
In short: as session cookies, which allow access to the user’s account, are sent in every request, simply securing the login page is absolutely insufficient.
How do I enable HTTPS properly?
Enforce HTTPS usage
Some websites buy an SSL certificate, configure it on their web server, and assume they’re done. But that just means you enabled the option of HTTPS – which users are unlikely to notice. To make sure everyone benefits from your HTTPS support, you should redirect all requests that come in on HTTP, to HTTPS. That means any user visiting your site will automatically be switched over to HTTPS, and from that point on their traffic is secure.
This still leaves a small gap: the first time the user makes a request to your website, they will use plain HTTP, and they may already transmit confidential information at that time. It also leaves a small man-in-the-middle hole open.
Strict transport security
For further tightening, enable HTTP strict transport security (HSTS). This is a special header that can be sent by the server, which indicates: for a defined time period, you must not access this website over plain HTTP, or access it over HTTPS when it has a dodgy certificate. Optionally, subdomains can be included as well.
It’s a simple server header, and trivial to configure. Note though that there is no way to revert the setting before the max-age has expired, so don’t make it too long. You use HSTS next to an HTTPS redirect, not in place of it.
Cookies, including the session cookie, have an optional flag called secure. This basically means: “never send this cookie over a plain HTTP connection”. Enable this flag on your cookies, and they will not be sent with the HTTP request the browser does initially – but only once the connection switched to HTTPS, and can no longer be eavesdropped.
Can I just deploy SSL for authenticated users?
No. Once you’ve followed the guidelines above, at the moment a user makes a plain HTTP connection, you do not know whether they are authenticated. That’s the whole point: they should not transmit any secret information, like their session cookie, until they are on SSL.
Although I can imagine some ways to work around this, they might break at some point. As the cost of SSL is really quite low nowadays, it’s not worth it.
|Politics / Re: Jonathan Launches First Nigerian-Built Drone by TheArbiter: 10:28am On Dec 18, 2013|
Talking about drones. If this is a real drone
What do we call this?
My opinion: The officer who orchestrated this charade needs to be court martialed. Why ridicule your Commander-in-Chief with the commissioning of a mere prototype toy that can purchased in average toy stores abroad for a few dollars. A responsible serious weapons development section of the Air force, everywhere in the world, tasks a President to commission a fully operational vehicle and not a toy prototype.
Honestly, why did Prez Jonathan agree to this charade in the first place.
|Education / Re: FG Pays N200b To CBN For ASUU by TheArbiter: 3:36pm On Dec 04, 2013|
ASUU Strike: Presidency lied against ASUU, By Nasir Fagge
The letter from the Government, signed by Dr. Mac John Nwaobiala, was delivered at ASUU National Secretariat on 6th November, 2013. ASUU had made it clear to Government through the Minister of Education, and at the meetings held with Government’s representative, that our Union does not have an EXECUTIVE PRESIDENT who has the power to decide for the Union on crucial matters, including and especially on trade disputes and strikes. Similarly, the internal democracy of our Union does not permit the Principal Officers to make decisions on Union matters of trade disputes without advice from the National Executive Council. Allowing branches to meet, advise and take positions is the only way we know how to run a democratic organisation.
2. The content of ASUU’s reply
Here is the relevant portion of ASUU’s reply to government’s letter, as contained in Union’s letter of 22nd November, 2013 signed by Nasir F. Isa, President of ASUU:
“On behalf of NEC I hereby convey the Union’s appreciation of the expressed concern of Your Excellency to bring an end to the crisis occasioned by the poor implementation of the 2009 Agreement and the 2012 Memorandum of Understanding (MoU) arising therefrom through your personal intervention.
NEC would have taken a definitive decision on ending the strike, especially in view of Your Excellency’s intervention but for certain uncertainties, the clearance of which would have been decisive in making the relevant decision. These uncertainties involve issues on which ASUU members nationwide have strong feelings. They are about certain gaps evident in Government’s report as presented to our Union.
Specifically, our members are requesting that Your Excellency facilitates the resolution of the issues as a way of concretising their understanding of the agreed positions. This will involve the following:
(a) That the N200 billion agreed upon as 2013 Revitalisation Fund for public universities shall be deposited with the CBN and disbursed to the benefitting universities within two weeks.
(b) That the renegotiation of the 2009 Agreement in 2014 be included in the final document as agreed at the discussion with Your Excellency.
(c) That a Non-victimisation clause which is normally captured in all interactions of this nature be included in the final document and
(d) That a new Memorandum of Understanding shall be validly endorsed, signed by a representative of government, preferably the Attorney General of the Federation and a representative of ASUU, with the President of the Nigeria Labour Congress (NLC) as a witness.
Your Excellency please be assured that the Union is willing to do all that is needful to resolve the lingering crisis as soon as the expressed observations of our members are addressed.
Yours in the struggle
Naisr F. Isa, Ph.D
|Software/Programmer Market / Gamemaker Studio Standard Edition Is Free For A Limited Time by TheArbiter: 7:45am On Nov 27, 2013|
By Russ Boswell
Source Link here
Have you ever wanted to design a game? It's a difficult process, just ask anyone who has ever stepped foot into the business, but that doesn't mean you should give up on your dreams of porting something to the masses. There are a lot of useful tools out there that can help you breath life into your gaming ideas, but some of them will set you back quite a bit, and some are complex and difficult to maneuver.
GameMaker Studio from YoYo Games is not a traditional tool, but is instead an easy-to-use program that can help you quickly create two-dimensional Indie-style games. The best part? You can get it for free.
You're not going to crank out a AAA-title with this creator, but you'll "get a feel" for game design, and you can have a fully-functioning game within weeks according to the company's website. This is a great place to learn the process, and there are hundreds of tutorials online that can help you use GameMaker like a pro.
GameMaker Studio: Standard Edition would normally set you back around $50, but YoYo Games is giving would-be developers a free copy of their popular tool for a "limited time." To get yours, you'll need to go to the following page and download the free edition of the software. Once downloaded and installed, a box will pop up asking you which "update stream" you want to use. Choose the beta stream, and let the program update itself. Once it's all finished you'll be able to upgrade to the Standard Edition, and will be sent an activation code.
We don't know exactly how long this offer will be around, so be sure to secure your copy ASAP.
|Politics / Re: Whats Your Motivation And Inspiration For Voting President Jonathan? by TheArbiter: 4:20pm On Oct 04, 2013|
This is definitely not a campaign thread. If i were a moderator, i would have censored your statements and that of @Dike Chimezie. Isn't there a motivation or inspiration that made millions of youths to vote for the current President in office?
Thats what i'm interested in learning.
|Sections: politics (1) business autos (1) jobs (1) career education (1) romance computers phones travel sports fashion health |
religion celebs tv-movies music-radio literature webmasters programming techmarket
Nairaland - Copyright © 2005 - 2016 Oluwaseun Osewa. All rights reserved. See How To Advertise. 1101