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Ivan Pavlov

Creature with Interlocking Gears on Legs Discovered | LiveScience - 0 views

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    "Gears are ubiquitous in the man-made world, found in items ranging from wristwatches to car engines, but it seems that nature invented them first. A species of plant-hopping insect, Issus coleoptratus, is the first living creature known to possess functional gears, a new study finds. The two interlocking gears on the insect's hind legs help synchronize the legs when the animal jumps."
Skeptical Debunker

We're so good at medical studies that most of them are wrong - 0 views

  • Statistical validation of results, as Shaffer described it, simply involves testing the null hypothesis: that the pattern you detect in your data occurs at random. If you can reject the null hypothesis—and science and medicine have settled on rejecting it when there's only a five percent or less chance that it occurred at random—then you accept that your actual finding is significant. The problem now is that we're rapidly expanding our ability to do tests. Various speakers pointed to data sources as diverse as gene expression chips and the Sloan Digital Sky Survey, which provide tens of thousands of individual data points to analyze. At the same time, the growth of computing power has meant that we can ask many questions of these large data sets at once, and each one of these tests increases the prospects than an error will occur in a study; as Shaffer put it, "every decision increases your error prospects." She pointed out that dividing data into subgroups, which can often identify susceptible subpopulations, is also a decision, and increases the chances of a spurious error. Smaller populations are also more prone to random associations. In the end, Young noted, by the time you reach 61 tests, there's a 95 percent chance that you'll get a significant result at random. And, let's face it—researchers want to see a significant result, so there's a strong, unintentional bias towards trying different tests until something pops out. Young went on to describe a study, published in JAMA, that was a multiple testing train wreck: exposures to 275 chemicals were considered, 32 health outcomes were tracked, and 10 demographic variables were used as controls. That was about 8,800 different tests, and as many as 9 million ways of looking at the data once the demographics were considered.
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    It's possible to get the mental equivalent of whiplash from the latest medical findings, as risk factors are identified one year and exonerated the next. According to a panel at the American Association for the Advancement of Science, this isn't a failure of medical research; it's a failure of statistics, and one that is becoming more common in fields ranging from genomics to astronomy. The problem is that our statistical tools for evaluating the probability of error haven't kept pace with our own successes, in the form of our ability to obtain massive data sets and perform multiple tests on them. Even given a low tolerance for error, the sheer number of tests performed ensures that some of them will produce erroneous results at random.
Walid Damouny

Fit teenage boys are smarter, but muscle strength isn't the secret - 0 views

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    "In the first study to demonstrate a clear positive association between adolescent fitness and adult cognitive performance, Nancy Pedersen of the University of Southern California and colleagues in Sweden find that better cardiovascular health among teenage boys correlates to higher scores on a range of intelligence tests - and more education and income later in life."
Walid Damouny

Vitamin D levels have different effects on atherosclerosis in blacks and whites - 0 views

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    "Vitamin D is quickly becoming the "go-to" remedy for treating a wide range of illnesses, from osteoporosis to atherosclerosis. However, new evidence from a Wake Forest University School of Medicine study suggests that supplementing vitamin D in those with low levels may have different effects based on patient race and, in black individuals, the supplement could actually do harm."
thinkahol *

Minority rules: Scientists discover tipping point for the spread of ideas - 1 views

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    ScienceDaily (July 26, 2011) - Scientists at Rensselaer Polytechnic Institute have found that when just 10 percent of the population holds an unshakable belief, their belief will always be adopted by the majority of the society. The scientists, who are members of the Social Cognitive Networks Academic Research Center (SCNARC) at Rensselaer, used computational and analytical methods to discover the tipping point where a minority belief becomes the majority opinion. The finding has implications for the study and influence of societal interactions ranging from the spread of innovations to the movement of political ideals.
thinkahol *

5 Things That Internet Porn Reveals About Our Brains | Sex & the Brain | DISCOVER Magazine - 1 views

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    With its expansive range and unprecedented potential for anonymity, (the Internet gives voice to our deepest urges and most uninhibited thoughts. Inspired by the wealth of unfettered expression available online, neuroscientists Ogi Ogas and Sai Gaddam, who met as Ph.D. candidates at Boston University, began plumbing a few chosen search engines (including Dogpile and AOL) to create the world's largest experiment in sexuality in 2009. Quietly tapping into a billion Web searches, they explored the private activities of more than 100 million men and women around the world. The result is the first large-scale scientific examination of human sexuality in more than half a century, since biologist Alfred Kinsey famously interviewed more than 18,000 middle-class Caucasians about their sexual behavior and published the Kinsey reports in 1948 and 1953. Building on the work of Kinsey, neuroscientists have long made the case that male and female sexuality exist on different planes. But like Kinsey himself, they have been hampered by the dubious reliability of self-reports of sexual behavior and preferences as well as by small sample sizes. That is where the Internet comes in. By accessing raw data from Web searches and employing the help of Alexa-a company that measures Web traffic and publishes a list of the million most popular sites in the world-Ogas and Gaddam shine a light on hidden desire, a quirky realm of lust, fetish, and kink that, like the far side of the moon, has barely been glimpsed. Here is a sampling of their fascinating results, selected from their book, A Billion Wicked Thoughts.
thinkahol *

Does sexual equality change porn? - Pornography - Salon.com - 0 views

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    In what may feel like a flashback to the porn wars of the '60s, a new study investigates the link between a country's relative gender equality and the degree of female "empowerment" in the X-rated entertainment it consumes. Researchers at the University of Hawaii focused on three countries in particular: Norway, the United States and Japan, which are respectively ranked 1st, 15th and (yikes) 54th on the United Nations' Gender Empowerment Measure (GEM). To simplify their analysis, their library of smut was limited to explicit photographs of women "from mainstream pornographic magazines and Internet websites, as well as from the portfolios of the most popular porn stars from each nation." Then they set out to evaluate each image on both a disempowerment and an empowerment scale, using respective measures like whether the woman is "bound and dominated" by "leashes, collars, gags, or handcuffs" or "whether she has a natural looking body." Their hypothesis was that societies with greater gender equity will consume pornography that has more representations of "empowered women" and less of "disempowered women." It turned out the former was true, but, contradictory as it may sound, the latter was not. "While Norwegian pornography offers a wider variety of body types -- conforming less to a societal ideal that is disempowering to the average woman -- there are still many images that do not promote a healthy respect for women," the researchers explain. In other words, Norwegian porn showed more signs of female empowerment, but X-rated images in all three countries equally depicted women in demeaning positions and scenarios. This, the researchers surmise, "suggests that empowerment and disempowerment within pornography are potentially different constructs." So, gender equality is accompanied by sexual interest in a broader range of beauty types but not a decrease in porn's infantilization of females, use of dominating fetish gear on women or any of the other characteristics th
anonymous

Microbes as Guardians of the Earth - 1 views

Microbes go about as gatekeepers of our planet guaranteeing that minerals such as carbon and nitrogen, are continually reused. Despite the fact that the Earth presently populated with green plants,...

research in microbiology

started by anonymous on 08 Jan 15 no follow-up yet
Ivan Pavlov

New, tighter timeline confirms ancient volcanism aligned with dinosaurs' extinction | EurekAlert! Science News - 0 views

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    A definitive geological timeline shows that a series of massive volcanic explosions 66 million years ago spewed enormous amounts of climate-altering gases into the atmosphere immediately before and during the extinction event that claimed Earth's non-avian dinosaurs, according to new research from Princeton University. A primeval volcanic range in western India known as the Deccan Traps, which were once three times larger than France, began its main phase of eruptions roughly 250,000 years before the Cretaceous-Paleogene, or K-Pg, extinction event, the researchers report in the journal Science. For the next 750,000 years, the volcanoes unleashed more than 1.1 million cubic kilometers (264,000 cubic miles) of lava. The main phase of eruptions comprised about 80-90 percent of the total volume of the Deccan Traps' lava flow and followed a substantially weaker first phase that began about 1 million years earlier.
anonymous

Crop Production: An Enhanced Path with the Biofield Treatment - 0 views

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    The field of agriculture encompasses a wide range of activities wherein the cultivation of plants, animals, fungi and other life forms is done for fulfilling the requirements of food, medicine, fiber, bio fuel etc. to sustain and improve human life.
anonymous

What is UV Visible Spectroscopy (UV-VIS) - Trivedi Science - 0 views

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    Ultraviolet-visible spectroscopy uses the light in the visible and adjacent near ultraviolet (UV) and near infrared (NIR) ranges (200-900 nm).
Janos Haits

Welcome // | DiRT Directory - 0 views

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    "The DiRT Directory is a registry of digital research tools for scholarly use. DiRT makes it easy for digital humanists and others conducting digital research to find and compare resources ranging from content management systems to music OCR, statistical analysis packages to mindmapping software."
Janos Haits

The Stanford NLP (Natural Language Processing) Group - 0 views

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    "The Natural Language Processing Group at Stanford University is a team of faculty, research scientists, postdocs, programmers and students who work together on algorithms that allow computers to process and understand human languages. Our work ranges from basic research in computational linguistics to key applications in human language technology, and covers areas such as sentence understanding, machine translation, probabilistic parsing and tagging, biomedical information extraction, grammar induction, word sense disambiguation, automatic question answering, and text to 3D scene generation."
Janos Haits

BabelNet™ | A very large multilingual encyclopedic dictionary and semantic network - 0 views

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    BabelNet is both a multilingual encyclopedic dictionary, with lexicographic and encyclopedic coverage of terms, and a semantic network which connects concepts and named entities in a very large network of semantic relations, made up of more than 9 million entries, called Babel synsets. Each Babel synset represents a given meaning and contains all the synonyms which express that meaning in a range of different languages.
Angel Scott

A List of Conferences on Teaching & Learning - 0 views

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    Teaching and learning have made quite a few advances in the recent era and the conferences will help you learn about them. Lots of conferences which are organized around the world which cover various topics which range from literature to science to business to sports to politics to environment. These conferences are a great platform to learn about the latest advancements that are happening on the particular topic of the conference. It is also a great opportunity to showcase your ideas and researched facts in front of your peers from around the world. These are some of the best and top notch conferences which will be dealing with learning and teaching which you can visit in order to stay at par with the recent developments.
oodlesai

Artificial Intelligence Development Company | AI Development Services - 0 views

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    Oodles Technologies specializes in providing various IT services with excellent results. The new dedicated services for Artificial Intelligence and its tools are no different than what we have done till now. With a revamped look and feel, Oodles AI brings every service in demand using Artificial Intelligence as a base under one roof. Our experts excel in developing solutions for a wide range of challenges using AI.
Janos Haits

A new era in Brain Research - EBRAINS - 0 views

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    'A key enabler to advance brain science EBRAINS is a new digital research infrastructure, created by the EU-funded Human Brain Project, that gathers an extensive range of data and tools for brain-related research. EBRAINS will capitalize on the work performed by the Human Brain Project teams in digital neuroscience, brain medicine, and brain-inspired technology and will take it to the next level.'
Janos Haits

iDAI - 0 views

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    "Find a wide range of archaeological information for scientific research, for the discovery of new interrelations and a better understanding of our cultural heritage."
mdkpest

Keeping Your Home Safe from Pests: A Guide to Pest Control Services in TX - Termite, Bed Bug, Mosquito, Rodent, Pest Control, Traps | MDK - 0 views

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    Pests can cause significant problems in homes, ranging from property damage to health hazards. Unfortunately, Texas is home to a variety of pests, such as cockroaches, ants, rodents, and termites, that can cause severe damage if not controlled. In this article, we will provide a guide to pest control services in TX to help homeowners keep their homes safe from pests.
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