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Comments

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Graphene Sheath Modulates Fiber-Optic Transmission At 200 GHz

tanujt Re:still need another modulator! (18 comments)

Works by giving researchers high impact factor journal publications and later on tenure.

about 9 months ago
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Weak Statistical Standards Implicated In Scientific Irreproducibility

tanujt Or you know.. (182 comments)

Use Bayesian statistics.

about a year ago
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Security Company Says NASDAQ Waited Two Weeks To Fix XSS Flaw

tanujt Spam (61 comments)

I can basically say I've spammed them

Well, there's your answer.

about a year ago
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Silicon Beach Startups Spawn From the Ashes of MySpace

tanujt Re:Silicon Noun (44 comments)

What, you didn't know that the cloud is made out of silicon and the social interconnectivity of the quantum network is made optimal by use of organic solar cells and other such buzzwords?

about a year ago
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Particle Physicists Facing Insane Competition For Work

tanujt Re:why not work for wall street? (226 comments)

Bunch of quantum physicists on wall street? You know that's going to breed trouble. You won't be able to find your Bulls or Bears.

They'll be locked up inside a box somewhere, and until you open it, you won't know what the market trend is like.

about a year ago
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Launch of India's First Navigation Satellite Successful

tanujt Re:Out of curiosity... (89 comments)

We actually inherited a lot of our bureaucracy and administration from the Brits. I'm sure if you want to use the IRNSS on your cell phone, you'll just have to fill out a form to acquire a permission-form which is then submitted to a committee for speedy* evaluation.


*Subject to the lunch and tea-times of the members of the committee.

about a year ago
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My plans for summer ...

tanujt Third world Represent! (187 comments)

Your water turns ?? I can't see that deep in the outhouse. . . . (grin)

You have water??

about a year ago
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Why We'll Never Meet Aliens

tanujt Meanwhile, in Vogsphere (629 comments)

While we're pondering how advanced or 'cybernetic' our apelike species is becoming and what that implies for alien contact, the Vogons are drafting legislation to setup a committee to analyze the ramifications of setting up a committee to analyze the ramifications of building a space-highway through the Solar system. We're not going to be able to ponder much longer.

Just a few hundred years, given how lightning fast committees are.

about a year and a half ago
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New Study Suggests No Shortage of American STEM Graduates

tanujt Correlation with wages? (344 comments)

I don't know if it's a good strategy to deduce from flat wages that there isn't a shortage in supply of STEM workers. In fact, it is more than likely that the 'replacement STEM workers' for Americans (i.e., immigrant workers) come cheaper. If there is a 'market force' of labor shortage, which brings wages up, there's a counteracting force of 'cheap labour', which brings the wages back to where they were. Essentially, if you pick 'wage behavior' and 'number of employments' as your two metrics for deducing something, you may be underestimating the dimensionality of your 'state-space'.

After looking at EPI's paper, the wages graphs vary around in an errorbar of about 100%, which is incidentally how much the number of employees graphs vary, too. Without actual errorbars, correlating two quantities with a similar-looking 'statistical spread' would lead to an underestimated total (or propagated error).

about a year and a half ago
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I most look forward to flying with ...

tanujt But, wait (303 comments)

I am looking forward to getting distracted by something silly just as I'm about to hit the dirt after tripping over.

about a year and a half ago
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If asked to read a corporate white paper, I feel like ...

tanujt White paper? (128 comments)

What about the underrepresented minorities like the Brown or Yellow papers?

about a year and a half ago
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Ask Slashdot: Starting From Scratch After a Burglary?

tanujt Why (770 comments)

Why did you have 5 TV's?

about a year and a half ago
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Researchers Analyze Twitter To Find Happiest Parts of the United States

tanujt Re:Hot, Cold, Vice, Virtue (160 comments)

Virtue?

about a year and a half ago
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Google Pledges Pi Million Dollars In Pwnium 3 Prizes

tanujt Rounding (60 comments)

The bank is going to round that pi up.

It'll be more like a pie.

about a year and a half ago
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New Asteroid Mining Company Emerges

tanujt Firefly (148 comments)

It's going to work out fine until Deep Space Industries starts forming an Alliance.

Then Mal is going to flip the fuck out.

about 2 years ago
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New Asteroid Mining Company Emerges

tanujt Re:This is a joke. (148 comments)

What's the worst that could happen? Another failed startup?

What's the best that could happen? A mitigating effort towards Earth's looming resource problems?

However shitty the odds of the latter happening, consequences of both are staggeringly different.
DON'T PANIC

about 2 years ago
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Facebook Testing $100 Fee To Mail Mark Zuckerberg

tanujt Re:Beautiful (228 comments)

Use of hyperbole and sarcasm for driving a point home is what the post an example of.

And yes, I know that sounds like Yoda.

about 2 years ago

Submissions

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Making renewable energy work: Storing what we don't use

tanujt tanujt writes  |  more than 2 years ago

tanujt (1909206) writes "As is a major issue with every energy source, so do renewables suffer from it: what happens to the energy that we don't make use of but are still supplied? Well, it goes to waste. Danielle Fong of LightSail (a Berkley-based company) has a potential solution for wastage of solar energy: store it and return it to the grid when needed. And she does it without batteries: "Just use the electricity generated by your solar panel and/or windmill to power a compressor, pushing air into a tank. When you want your energy back, you release the air out of the tank, and use it to drive a generator, creating electricity."


What about the heat loss in compression/expansion? Fong says: "It became clear that what you wanted to do for maximum efficiency was keep the temperature as close to constant as possible in compression and expansion. It turned out nobody had figured out how to do that, and I read a Wikipedia article saying it was impossible to do it, and I said, ‘My god, that’s not true. You can just spray water in.’ And then I was like, ‘Wait. I could just spray water in.’ And thus the company and core idea was born."


So how does it work? : "Instead of wasting the heat, we collect it by spraying water into the air during the compression process. That keeps the temperature down, and it keeps the pressure down, so you have to put less energy in to compress the same amount of air. During expansion, spraying water sends heat back into the air, which keeps the pressure high, and increases the amount of energy you get back.” Science aside, the numbers don’t lie: LightSail’s process recovers 70% of the energy it puts out, pretty much doubling the efficiency of the standard compression method. "
Their website has more information about the technology they've developed, including some experimental calculations. This sounds like an innovative idea, although past experience has made me cynical about actual practicality or implementability of innovative ideas."

Link to Original Source
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Semiconductor Plants Show Dramatic Energy Reduction: ISMI Report

tanujt tanujt writes  |  more than 2 years ago

tanujt (1909206) writes "ISMI reports "Semiconductor manufacturing plants dramatically reduced their average energy use from 1997 to 2011 according to research by the International Sematech Manufacturing Initiative (ISMI). The study was conducted at 300 mm and 200 mm semiconductor manufacturing facilities in Asia, North America and Europe. They found that energy consumed by process equipment, which according to the latest survey accounts for more than 50 percent of a facility’s energy usage, has improved its efficiencies by half by 2011 and non-process equipment energy consumption has become one-fourth of the 1997 values."
In similar news: Texas Instruments released it's Corporate Sustainability Report (CSR) recently (behind a paywall), which shows that their normalized emissions jumped 23% over a year. Intel also released it's CSR where it "pledged to reduce its direct greenhouse gas emissions by 10 percent on a per-chip basis by 2020 compared to 2010 levels."
Given the recent surge of news about Earth's tipping point and unsustainable lifestyles of us puny humans, it is interesting how one of the largest industries in the world, i.e. chip fabrication, gets a pass in the media much more as compared to Big Oil."

Link to Original Source
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Indian researchers develop synthetic dye molecules, useful in solar cells

tanujt tanujt writes  |  more than 2 years ago

tanujt (1909206) writes "Researchers at the Institute of Chemical Technology have developed 18 synthetic dye molecules, which are useful in dye-sensitized solar cells (DSC). While silicon is very attractive as the solar cell candidate due to its prevalent high manufacturability, it has to be refined extremely well to function efficiently in solar conversion. The highest solar conversion efficiency achieved in silicon (as of 2008) is ~25%. DSC's can be quite highly efficient in their conversion (~90% for green light). Synthetic dyes in the Indian market are cheaper by 1000 Rs. ($20). According to the news source, 'While energy from silicon-based solar cells costs between $.30 and $.40 per watt (Rs 14.70 and Rs 19.60), electricity generated by the low cost DSC would cost $.01 or 49 paise per watt'. G Shankarling, Associate Professor at ICT, said, 'The beauty of DSC is that unlike silicon solar cells that need direct sunlight, these cells can accumulate energy, when indoors, that can light electric devices such as lamps or to power a fan in the house'. Synthetic dyes are considered an alternative candidate for solar cells. Due to their high conversion efficiency, relative ease and low cost of manufacture, they are an important aspect of research and implementation in developing nations like India. The industrial inertia of accepting newer technologies may be higher in developed nations, due to the highly streamlined semiconductor manufacturing/fabrication processes. Developing nations may have a higher chance of incorporating alternative technologies, as there isn't much inertia to combat."
Link to Original Source
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India-Japan jointly research paper thin batteries

tanujt tanujt writes  |  more than 3 years ago

tanujt writes "University researchers in India and Japan say they have developed paper-thin batteries, capable of powering handheld devices, laptops and even automobiles. This joint research project involves Japan Science and Technology Agency (JST), India's Department of Science and Technology (DST) and many Indian and Japanese academic institutions. The goal is to replace the liquid electrolyte in conventional batteries with solid lithium. Kalasalingam University's G. Hirankumar brought optimized cathode materials to Tohoku University's laboratories for three months of joint development. The one-micron thick, 5.2-volt batteries are expected to combine high energy density with thin film technology. These tiny batteries can supply currents of 1 mili-Ampere. Junichi Kawamura, director of Institute of Multidisciplinary Research for Advanced Materials (IMRAM) run by the Tohuku University, informs that these kind of batteries have already been employed in Japan in hybrid vehicle technologies. The thin-film battery market is expected to reach 11 billion USD by 2012, according to a 2006 report by Wintergreen Research."
Link to Original Source
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UK seeks tie-up in space technology with India

tanujt tanujt writes  |  more than 3 years ago

tanujt (1909206) writes "David Willett, British minister for Universities and Sciences has called for a stronger partnership between Indian Space Research Organisation (ISRO) and UK's space program. As of now, Willetts invited ISRO to partner the UK in its TechDemoSat program. TechDemoSat is an industry-led technology demonstration satellite which aims to provide a low-Earth-orbit test bed to help demonstrate the technical maturity and commercial viability of innovative new space technology. TK Alex, director of ISRO Satellite Centre, invited the UK to partner India in training space scientists through academic exchanges between the Indian Institute of Space Science and Technology, the Indian Institute of Remote Sensing and leading UK universities. This follows US President Obama's recent visit to India, wherein he signaled ending the ban on high-end technology exports and removal of Indian organizations, including ISRO and Defense Research & Development Organisation (DRDO), from the Entity List."
Link to Original Source

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