Monday, December 3, 2012

NASA to Unveil Mars Rover Curiosity Findings Monday

NASA will discuss the latest Red Planet activities of its Mars rover Curiosity on Monday (Dec. 3), but space geeks shouldn't get their hopes up for a bombshell announcement.

Despite rampant rumors to the contrary, Monday's press conference ? held at 12:00 p.m. EST (1700 GMT) during the fall meeting of the American Geophysical Union in San Francisco ? won't present any earth-shaking results that force humanity to rethink its place in the universe, NASA officials said.

"Rumors and speculation that there are major new findings from the mission at this early stage are incorrect," officials at NASA's Jet Propulsion Laboratory (JPL) in Pasadena, Calif., which manages Curiosity's mission, wrote in an update Thursday (Nov. 29). "The news conference will be an update about first use of the rover's full array of analytical instruments to investigate a drift of sandy soil."

Rumors of a big Curiosity discovery began swirling two weeks ago, after an NPR story quoted mission chief scientist John Grotzinger as saying that the rover's Sample Analysis at Mars instrument, or SAM, had recently gathered data "for the history books." [Latest Photos from Curiosity Rover]

Because SAM can identify organic compounds ? the carbon-containing building blocks of life as we know it ? many people speculated that the car-size robot had discovered complex organics in a Martian soil sample.

But that's not the case, JPL officials say.

"At this point in the mission, the instruments on the rover have not detected any definitive evidence of Martian organics," they wrote in Thursday's update.

NASA's attempts to rein in such rumors and set reasonable expectations for Monday's press conference began with some thoughts from Curiosity itself on Nov. 21 (via the rover's JPL-run Twitter account, @MarsCuriosity).

"What did I discover on Mars? That rumors spread fast online. My team considers this whole mission 'one for the history books,'" Curiosity wrote in a Twitter post that day.

The $2.5 billion Curiosity rover landed Aug. 5 inside the Red Planet's huge Gale Crater, kicking off a two-year prime mission to determine if Mars has ever been able to support microbial life.

The six-wheeled robot is the largest and most capable explorer ever sent to the surface of another world, NASA officials say. Curiosity has already discovered an ancient streambed where water likely flowed for thousands of years long ago, and it may well make a truly monumental discovery about the history and evolution of Mars before its roving days are done.

Just don't expect such an announcement on Monday.

Visit SPACE.com Monday for complete coverage of NASA's Mars rover Curiosity announcement and other space news from the American Geophysical Union's annual fall meeting.

Follow SPACE.com senior writer Mike Wall on Twitter @michaeldwall?or SPACE.com @Spacedotcom. We're also on Facebook?and?Google+.?

Copyright 2012 SPACE.com, a TechMediaNetwork company. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

Source: http://news.yahoo.com/nasa-unveil-mars-rover-curiosity-findings-monday-135045978.html

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This Week's Top Downloads:

This Week's Top Downloads:This Week's Top Downloads:

Smart WiFi Toggler for Android Learns Where Your Networks Are, Toggles Wi-Fi and Data Automatically

Android: Smart WiFi Toggler is a free utility that automatically learns where your preferred wireless networks are located, and when you approach their location, will turn on wi-fi and join those networks. More ?


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Netflix Finally Comes to Ubuntu in the Form of an Unofficial Desktop App

Ubuntu: Watching Netflix on Linux has always been a pain, since Microsoft Silverlight isn't available on Linux. The unofficial Netflix app for Ubuntu makes it easy to install Netflix and start watching movies right away. More ?


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Air Display Free Uses Your iPad as a Second Monitor, No Purchase Necessary

iOS: If you've been itching to try out using your iPad as a second monitor, but are hesitant to actually drop any cash, the popular screen sharing app Air Display has released a free, ad-supported version so you can check it out. More ?


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Bones Simplifies the Process of Creating a WordPress Theme

WordPress is a wonderful blogging platform and CMS-a reader favorite, in fact-but creating a theme isn't easy if you don't know the ropes. More ?


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Good Habits for iPhone Encourages You to Keep Doing the Things You've Always Wanted to Do

iOS: Good Habits helps you keep track of multiple activities and habits that you want to build over time. The app shows you a calendar of your current and longest unbroken chain lengths, shows you your to-dos as a checklist, and helps you stay motivated to keep your habit chains unbroken. More ?


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Eye In Sky is a Clean, Minimalist Weather App for Android

Android: Eye in Sky Weather is a free, elegant weather app for Android phones and tablets. The interface is simple and minimal, and the customizable home screen widgets fit right in with Android's Holo theme. More ?


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Goal Streaks Supercharges Seinfeld's Productivity Secret with Highly-Customizable Goal and Habit Tracking

iOS: Goal Streaks helps you set and track repeat tasks so you can form habits and achieve long-term goals more easily. The idea is to chip away a little bit each day, but Goal Streaks is incredibly versatile and can handle just about any more complex schedule you care to throw at it. More ?


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AppWatch Lets You Know When Android Apps Go on Sale

Android: Google Play has a great wishlist function for apps and content for which you're not quite ready to pull the trigger but doesn't have a way of notifying you when content goes on sale or if there is a price drop. More ?


This Week's Top Downloads:

Decor8 Personalizes the Windows 8 Start Screen with Custom Backgrounds and Color Schemes

Windows: If you're getting a little tired of the handful of low-resolution backgrounds for the Start screen in Windows 8, Stardock's Decor8 gives you all the tools you need to personalize it to your heart's content. More ?


This Week's Top Downloads:

Khan Academy Comes to iPhone with Over 3,500 Educational Videos

iOS: Khan Academy is a great way to learn about everything ranging from math to history. Their iOS app has updated to support the iPhone alongside the previously released iPad app. More ?


Source: http://feeds.gawker.com/~r/lifehacker/full/~3/qGGA293RdXE/this-weeks-top-downloads

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Sunday, December 2, 2012

How, in the animal world, a daughter avoids mating with her father: Paternal 'voice' recognition

How, in the animal world, a daughter avoids mating with her father: Paternal 'voice' recognition

Saturday, December 1, 2012

Paternal recognition ? being able to identify males from your father's line ? is important for the avoidance of inbreeding, and one way that mammals can do this is through recognizing the calls of paternal kin. This was thought to occur only in large-brained animals with complex social groups, but a new study published today in the open access journal BMC Ecology provides evidence in a tiny, solitary primate that challenges this theory.

The study, led by Sharon E Kessler, finds that the grey mouse lemur (Microcebus murinus) ? a small-brained, solitary foraging mammal endemic to Madagascar ? is able to recognize paternal relatives via vocalizations, thus providing evidence that this is not dependent upon having a large brain and a high social complexity, as previously suggested.

Because grey mouse lemurs are nocturnal solitary-foragers living in dense forests, vocal communication is important for regulating social interactions across distances where visibility is poor and communication via smell is limited. Though the mouse lemur shares sleeping sites with other mouse lemurs, it forages alone for fruit and insects. It is a particularly interesting species with which to study vocal paternal recognition because, in the wild, females remain in the same area of birth and cooperatively raise young with other female kin. Males do not co-nest with their mates or young and provide no paternal care, which limits opportunities for familiarity-based social interactions. Thus, vocalizations are likely to be important ? particularly for avoiding inbreeding.

The research team from Arizona State University and the University of Veterinary Medicine Hannover in Germany found that two of the most frequent calls of the mouse lemur were the mate advertisement call and the alarm call. Using multi-parametric analyses of the call's acoustic parameters, they could see that both call types contained individual signatures. Through this, they discovered that only male grey mouse lemur advertisement calls, but not alarm calls, contained acoustic paternal signatures. Furthermore, females paid more attention to advertisement calls from unrelated males than from their fathers.

The findings from the study suggest that the discrimination between mate advertisement calls and alarm calls may be an important mechanism for inbreeding avoidance. This is likely to be highly important in the grey mouse lemur species because males are likely to remain in an area for several years and they can expand their ranges to more than twice that of the female's range, making it likely that adult males' ranges will overlap with those of their daughters from previous mating seasons.

The team also proposed that the mouse lemur's ultrasonic calls above the hearing range of owls could be an anti-predator strategy, especially since the species suffers from high predation.

Lead author Kessler commented, "Given that more complex forms of sociality with cohesive foraging groups are thought to have evolved from an ancestral solitary forager much like the mouse lemur, this suggests that the mechanisms for kin recognition like those seen here may be the foundation from which more complex forms of kin-based sociality evolved."

She continued, "Future analyses will determine which acoustic parameters make this kin recognition possible by artificially manipulating acoustic parameters in the calls and then using the modified calls in playback experiments."

###

Paternal kin recognition in the high frequency / ultrasonic range in a solitary foraging mammal
Sharon E Kessler, Marina Scheumann, Leanne T Nash and Elke Zimmermann
BMC Ecology (in press)

BioMed Central: http://www.biomedcentral.com

Thanks to BioMed Central for this article.

This press release was posted to serve as a topic for discussion. Please comment below. We try our best to only post press releases that are associated with peer reviewed scientific literature. Critical discussions of the research are appreciated. If you need help finding a link to the original article, please contact us on twitter or via e-mail.

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Source: http://www.labspaces.net/125623/How__in_the_animal_world__a_daughter_avoids_mating_with_her_father__Paternal__voice__recognition

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Kazakhstan lauds leader on new holiday

ALMATY, Kazakhstan (AP) ? Kazakhstan is observing a new holiday lauding President Nursultan Nazarbayev, part of a growing cult of personality around the leader of the sprawling, resource-rich former Soviet republic.

The highlight of Saturday's celebration of President's Day, which marks the anniversary of Nazarbayev's first election in 1991, was a carefully choreographed pageant by some 30,000 performers in an arena in the capital Astana, including mass singing and banner-waving.

The 72-year-old Nazarbayev exercises extraordinary dominion over Kazakhstan's political life. In the most recent presidential election in 2010, he pushed aside three token rivals to win 95 percent of the vote. International monitors criticized the election as unfair.

He receives blanket, praiseful coverage from state news media, while the government has cracked down on independent outlets.

Source: http://news.yahoo.com/kazakhstan-lauds-leader-holiday-120924247.html

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Saturday, December 1, 2012

Electrically spun fabric offers dual defense against pregnancy, HIV

ScienceDaily (Nov. 30, 2012) ? The only way to protect against HIV and unintended pregnancy today is the condom. It's an effective technology, but not appropriate or popular in all situations.

A University of Washington team has developed a versatile platform to simultaneously offer contraception and prevent HIV. Electrically spun cloth with nanometer-sized fibers can dissolve to release drugs, providing a platform for cheap, discrete and reversible protection. The research was published this week in the Public Library of Science's open-access journal PLoS One. The Bill & Melinda Gates Foundation last month awarded the UW researchers almost $1 million to pursue the technology.

"Our dream is to create a product women can use to protect themselves from HIV infection and unintended pregnancy," said corresponding author Kim Woodrow, a UW assistant professor of bioengineering. "We have the drugs to do that. It's really about delivering them in a way that makes them more potent, and allows a woman to want to use it."

Electrospinning uses an electric field to catapult a charged fluid jet through air to create very fine, nanometer-scale fibers. The fibers can be manipulated to control the material's solubility, strength and even geometry. Because of this versatility, fibers may be better at delivering medicine than existing technologies such as gels, tablets or pills. No high temperatures are involved, so the method is suitable for heat-sensitive molecules. The fabric can also incorporate large molecules, such as proteins and antibodies, that are hard to deliver through other methods.

At a lab meeting last year, Woodrow presented the concept, and co-authors Emily Krogstad and Cameron Ball, both first-year graduate students, pursued the idea.

They first dissolved polymers approved by the Food and Drug Administration and antiretroviral drugs used to treat HIV to create a gooey solution that passes through a syringe. As the stream encounters the electric field it stretches to create thin fibers measuring 100 to several thousand nanometers that whip through the air and eventually stick to a collecting plate (one nanometer is about one 25-millionth of an inch). The final material is a stretchy fabric that can physically block sperm or release chemical contraceptives and antivirals.

"This method allows controlled release of multiple compounds," Ball said. "We were able to tune the fibers to have different release properties." One of the fabrics they made dissolves within minutes, potentially offering users immediate, discrete protection against unwanted pregnancy and sexually transmitted diseases.

Another dissolves gradually over a few days, providing an option for sustained delivery, more like the birth-control pill, to provide contraception and guard against HIV.

The fabric could incorporate many fibers to guard against many different sexually transmitted infections, or include more than one anti-HIV drug to protect against drug-resistant strains (and discourage drug-resistant strains from emerging). Mixed fibers could be designed to release drugs at different times to increase their potency, like the prime-boost method used in vaccines.

The electrospun cloth could be inserted directly in the body or be used as a coating on vaginal rings or other products.

Electrospinning has existed for decades, but it's only recently been automated to make it practical for applications such as filtration and tissue engineering.

This is the first study to use nanofibers for vaginal drug delivery.

While this technology is more discrete than a condom, and potentially more versatile than pills or plastic or rubber devices, researchers say there is no single right answer.

"At the time of sex, are people going to actually use it? That's where having multiple options really comes into play," Krogstad said. "Depending on cultural background and personal preferences, certain populations may differ in terms of what form of technology makes the most sense for them."

The team is focusing on places like Africa where HIV is most common, but the technology could be used in the U.S. or other countries to offer birth control while also preventing one or more sexually transmitted diseases.

The research to date was funded by the National Institutes of Health and the UW's Center for AIDS Research. The other co-author on the paper is Thanyanan Chaowanachan, a UW postdoctoral researcher and longtime HIV expert.

The team will use the new Gates Foundation grant to evaluate the versatility and feasibility of their system. The group will hire more research staff and buy an electrospinning machine to make butcher-paper sized sheets. The expanded team will spend a year testing combinations that deliver two antiretroviral drugs used to treat HIV and a hormonal contraceptive, and then six months scaling up production of the most promising materials.

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The above story is reprinted from materials provided by University of Washington, via EurekAlert!, a service of AAAS.

Note: Materials may be edited for content and length. For further information, please contact the source cited above.


Journal Reference:

  1. Cameron Ball, Emily Krogstad, Thanyanan Chaowanachan, Kim A. Woodrow. Drug-Eluting Fibers for HIV-1 Inhibition and Contraception. PLoS ONE, 2012; 7 (11): e49792 DOI: 10.1371/journal.pone.0049792

Note: If no author is given, the source is cited instead.

Disclaimer: This article is not intended to provide medical advice, diagnosis or treatment. Views expressed here do not necessarily reflect those of ScienceDaily or its staff.

Source: http://feeds.sciencedaily.com/~r/sciencedaily/matter_energy/electricity/~3/zKr4wDdrLNU/121130095234.htm

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?Interesting? Times

1212_SBR_AESTHETIC_ILLO

Illustration by Lilli Carr?.

Most of us read or look at art in order to feel something?to experience sensations perhaps unavailable to us in everyday waking life. But it?s not just our feelings. Encountering the visions of the past, we also begin to acquire a sense of how people used to feel as well. Perhaps they lived in more interesting times, where every plot moved deathward or toward maudlin ends. Or maybe their works deadpan an aloof, utterly demystified view of the world, where the only way one feels anything at all is in short, intense bursts of euphoria. Nothing seems more intimate or idiosyncratic than our feelings, of course, but what we allow ourselves to feel is shaped by the culture around us, and art indexes how those in the past understood the scope of their imagination.

These are the issues that animate the work of the literary critic and poet Sianne Ngai. In 2005 she published Ugly Feelings, a study of ?minor? states of feeling and how they have been shaped and animated by the commercial culture around us. Rather than thinking about emboldening, triumphant feelings of anger, joy or faith, for example, she wrote of ?envy? and ?boredom,? what it means that these feelings are so ambient and natural to us nowadays. In her new book, Our Aesthetic Categories: Zany, Cute, Interesting, she considers how those feelings help us form judgments about the aesthetic world, how we know to describe something as ?interesting? or adorable (or, worse yet, ?adorkable?). What does our critical vocabulary say about our present time? Is there a broader context for the conversational readymade ?That?s interesting ???

At first, talking about aesthetic experiences can seem like a dreary, specialized kind of thing. But these conversations are always about so much more than describing pretty or pleasurable things. For instance, what is the difference between beauty and the sublime? While this distinction might not strike us as particularly pressing, the two categories are suggestive of radically different ways of understanding the world, and the question?one wrestled with by figures like Edmund Burke and Immanuel Kant?contains the anxieties of its time. Beauty is recognition, mastery, a scale that we can comprehend; the sublime remains mysterious, metaphysical, difficult to take in all at once. To speak of beauty and the sublime, then, is to have a conversation on rational judgment and faith.

Our Aesthetic Categories, though, argues on behalf of aesthetic experiences that aren?t quite so awe-inspiring or rare. Sitting before your computers or walking the streets of your town, you don?t encounter beautiful things as frequently as you do interesting, momentarily arresting ones?and as for the sublime, when was the last time you experienced catharsis? Instead, Ngai considers our ?minor? aesthetic experiences, the ones that make up our day. The zany, cute, and interesting won?t stir us to tears or action or a belief in the creator. Rather, these are dashed-off assessments that feel like second nature, given the speed at which things circulate. But these are judgments as rich for unpacking as the beautiful or the sublime?and, in our time and place, more important than ever. Advertising doesn?t want to be beautiful or sublime; it wants to be everywhere at once, remembered but not necessarily judged. Hello Kitty and Sonic the Hedgehog don?t aspire to high art and seem totally disposable. And yet their cuteness survives the market, feeding into a persistent yearning to be able to hold and cuddle and cherish these images that don?t actually exist in the real, hyper-fluid world.?

In Our Aesthetic Categories, Ngai unpacks these seemingly simple judgments and finds a great deal hidden within. For example, judging something ?cute? often ?infantilizes" the beholder, as we melt into a puddle of oohs and aahs at the sight of a baby bunny eating a baby carrot. But just as a child might love a doll to tatters, our absorption with ?cuteness? is born of both tenderness and aggression. Something cute is something we condescend to, even as we desire to touch and ruffle and hold and possess it.

The category of zaniness is something we recognize in performance?imagine Lucille Ball at her most frazzled, Jim Carrey at the height of his super-elasticity. Ngai?s chapter on zaniness is the most historical, as she describes zaniness as a flustered, exaggerated response to the all-at-once stresses of modern life.

To deem something ?interesting? is to promise to return to it. It?s a judgment that doesn?t really say anything, beyond forestalling that judgment, like a (per Ngai) ?sticky note? amid an endless wash of data.?At its most thoughtful, calling something ?interesting? might be an expression of indeterminacy, a placeholder for a future conversation. But more often than not, it?s just conversational filler, something dropped in when you don?t feel like judging at all.

So?what does any of this mean? There have always been things that have struck people as zany, cute, or interesting. The question becomes why these kinds of judgments predominate nowadays?what historical and cultural developments they point to, how the world around us might begin to draw on our unexamined comfort in such categories. Ngai offers Yoshitomo Nara and Takashi Murakami?s paintings of surly adolescents and fanged anime knockoffs as moments when our assumptions around cuteness?the stability of feeling somehow ?above? the cute object?melt away, for these images manage to be ?helpless and aggressive? at the same time. Does our sense of things being ?interesting? relate to our present-day situation, where ?change is paradoxically constant and novelty paradoxically familiar?? Do we long to hold and protect cute things as a way of anchoring ourselves and making the world manageably small? Is the zany workplace comedy our way of obscuring how awful actual work is?

Author Sianne Ngai.

Author Sianne Ngai.

Courtesy of the author.

Our Aesthetic Categories isn?t exactly light reading?it?s certainly not as glib as a book on cuteness and zaniness, one that juxtaposes Kant, modernist poetry, Yoshitomo Nara and The Cable Guy, might suggest. It?s almost compulsively thick with references. But it?s the type of book that contains ideas that are broadly provocative, even for the ?merely interested.? It is one of the most useful guides to the present I?ve read in a while, almost despite itself. It offers a way of thinking about so many forms of present-day self-expression, from the prevalence of first-person writing on the Internet to the ?Like/Share?-this cheer of social networks. It helps explain a certain style of art (Tao Lin, for example) that advances on muted, subdued, contingent feelings.

Ngai?s book prepares us to think about these new ways we might feel about these relationships?how, for example, our categories for judgment seem to suggest a diffident, uncertain, ironic feeling about life and its possibilities. Does anyone ever mean it when they say something is ?interesting??or do we all, in art and conversation, merely aspire to be interesting enough? We usually ponder the present condition by considering our consumer choices or modes of self-presentation. But perhaps the line around our imagination starts elsewhere, in those aesthetic experiences that happen on the edge of comprehension. ?Before we are inventories of symbols and things, we are thinking, feeling people navigating a fluid, ever-changing world?a world where everything is interesting but not much more, where cuteness and zaniness are the only scales available to us when confronted with global vastness.

Source: http://feeds.slate.com/click.phdo?i=8c52cac28e81c67f918f5e7b696a5abc

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Final exam information and virtual office hours? - Business Risk ...

As soon as I get done writing the final exam, I will post a blog entry in which I provide helpful hints for studying.

The exam is scheduled for December 10, 9:00-11:00 a.m. in Cashion 306. Between now and then, if you have any course-related questions or concerns, free to call me at 254-307-1317 during normal business hours (i.e., between the hours of 9-5). Thanks to Google Voice, this number rings at my home office in Austin, my cellphone, and my Baylor office, so I am really easy to get hold of. In the unlikely event that you get voice mail, just leave your name, number, and time of your call, and I?ll get back to you as soon as possible.

I hope to see some of you at the seminar tomorrow. Should be very interesting! Sic em, Bears!

Source: http://risk.garven.com/2012/11/29/final-exam-information-and-virtual-office-hours/

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