More information: buffalomemory.jp/news/120508a.html (in Japanese) Explore further © 2012 Phys.Org Hynix, Toshiba to develop new STT-MRAM memory device MRAM is said to resist high radiation and can operate in extreme temperature conditions, suited for military and space applications. MRAM stands for magnetoresistive random-access memory. This is a non-volatile random-access memory technology. Supporters say MRAM will eventually be a dominant memory technology because of impressive benefits. Once capacitors used in DRAM lose their charge over time, memory assemblies that use DRAM need to refresh all the cells in their chips approximately twenty times a second; MRAM never requires a refresh. MRAM retains its memory with the power turned off; there is no constant power draw. According to MRAM-Info.com, the MRAM chips that were showcased by Buffalo at the Japan show are probably made by MRAM maker, Everspin Technologies. Everspin has touted MRAM as a technology that enhances data center and networking fault recovery, reducing system downtime and simplifying system design, for an overall lower total cost of ownership. Meanwhile, other industry observers say that MRAM is a “niche” technology, as its relatively high costs prevent it from competing head-on with more popular memory technologies such as flash and DRAM. On the other hand, MRAM supporters call it the next-generation memory technology. They also say that it is now gaining wider acceptance, and that MRAM is a serious challenger to the status quo in semiconductor memory.“MRAM is the holy-grail of memory: it can provide high-density non-volatile memory that is extremely fast and can replace all kinds of memories used today in a single chip,” says MRAM-Info.com. According to reports, Dell and LSI are putting MRAM from Everspin Technologies into their storage systems.Another sign of MRAM interest is that, earlier this year, Spin Transfer Technologies raised $36 million in pursuit of OST-MRAM, which stands for orthogonal spin transfer magnetoresistive random access memory. Spin Transfer Technologies was established by Allied Minds and New York University to develop and commercialize its OST-MRAM technology. The company says implications of the technology for the development of spin transfer MRAM devices include faster switching times, lower power operation and scalability to smaller dimensions. Citation: Buffalo shows SSDs with MRAM at Japan show (2012, May 15) retrieved 18 August 2019 from https://phys.org/news/2012-05-buffalo-ssds-mram-japan.html (Phys.org) — Japan-based storage experts, Buffalo, has introduced a new line of solid state drives (SSDs) that use MRAM cache (instead of standard SDRAM). The company’s new line of solid state drives went on show this month in the form of a 4-Gbyte SSD equipped with an 8-Mbyte MRAM cache memory at the Embedded Systems Expo in Japan, which ran from May 9 to May 11. The show is an important gathering of the latest technologies, systems integration platforms and development platforms serving embedded systems. Buffalo’s initial targeted end users for its MRAM line are to be corporate customers in industrial settings requiring high reliability. This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.
The company is hoping that Exynos 5 Dual will lead the pack in the high-end mobile application processor market. A Samsung white paper that presents the details says that the “Exynos 5 Dual is designed for high-end tablets that require multi-window operations, full multitasking, and fast response while running applications. Exynos 5 Dual is the first chip in the market to integrate Cortex-A15 dual core. The computing capability of Cortex-A15 dual core is similar to the CPU of a personal computer.” Designed with the 32nm low-power process, Exynos 5 Dual provides performance features such as dual core CPU, highest memorybandwidth, WQXGA display, 1080p 60fps video hardware, 3D graphics hardware, Image Signal Processor, and high-speed interfaces such as USB 3.0 and SATA3.Some Samsung watchers will not be surprised to see a quad-core version of the dual-core Exynos 5 next year.The upcoming Exynos 5 is a dual core chip; it does promise faster speeds running at 1.7 gigahertz with ARM’s quad-core Mali T-604 graphics processor. “With Mali-T604, Exynos 5 Dual delivers two times better GPU performance than Exynos 4,” according to Samsung.AndroidAuthority comments on the implications. “What’s nice about Exynos 5 Dual is that it doesn’t come just with a next-gen CPU, but also a next-gen GPU. This is a fortunate match, as they are both designed by ARM itself, so they benefit from higher integration, and also because ARM changes its GPU architecture only once every five years.”Mali T604 is the first GPU design based on the Midgard architecture, with OpenGL ES 3.0 and OpenCL 1.1 full profile. With the quad-core Mali-T604 GPU, the Exynos 5 Dual supports resolutions up to 2560 by 1600 and stereoscopic 3-D.The chip will also support USB 3.0, which could lead to smartphones and tablets with USB 3.0 ports for fast data transfers. Samsung has also incorporated SATA III controllers into the Exynos 5 Dual.The chip supports Wi-Fi Display technology, where users can stream media from smartphone to supported TV.All signs are that enthusiasts are praising the Exynos 5 Dual as the chip to look for in future tablets and smartphones, because of its powerful CPU and GPU features. Samsung, though, has not yet announced any specific products that will use the Exynos 5 Dual. This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only. (Phys.org) — Samsung has released details about its next-generation Exynos 5 Dual. This is a dual-core mobile CPU based on ARM Cortex-A15 architecture. That ARM Cortex A15 word string is no small differentiator for Samsung and therein lies the edge. With ARM technology, Samsung plans to answer the demands of mobile computing users—systems that can deliver significant power and speed but also energy efficiency. Samsung says the Exynos 5 was designed to meet all three of graphic-intensive, multi-task and power efficient requirements. Explore further © 2012 Phys.org More information: www.samsung.com/global/busines … s/products5dual.html Citation: Exynos 5 Dual chip is unrobed by Samsung (2012, August 11) retrieved 18 August 2019 from https://phys.org/news/2012-08-exynos-dual-chip-unrobed-samsung.html Qualcomm announces a new family of mobile Snapdragon Chipsets
New simulations show that Mercury and other unusually metal-rich objects in the solar system may be relics left behind by hit-and-run collisions in the early solar system. Credit: NASA/JPL/Caltech More information: Mercury and other iron-rich planetary bodies as relics of inefficient accretion, Nature Geoscience (2014) DOI: 10.1038/ngeo2189AbstractEarth, Venus, Mars and asteroids such as Vesta and, perhaps, Lutetia have chondritic bulk compositions with massive silicate mantles surrounding iron cores. Anomalies include Mercury with its abundant metallic iron (about 70% by mass), the Moon with its small iron core, and metal-dominated asteroids. Although a giant impact with proto-Earth can explain the Moon’s small core, a giant impact origin for Mercury is problematic. Such a scenario requires that proto-Mercury was blasted apart with far greater specific energy than required for lunar formation, yet retained substantial volatile elements and did not reaccrete its ejected mantle. Here we present numerical hydrocode simulations showing that proto-Mercury could have been stripped of its mantle in one or more high-speed collisions with a larger target planet that survived intact. A projectile that escapes the planet-colliding orbit in this hit-and-run scenario7 ultimately finds a permanent sink for its stripped mantle silicates. We show that if Mars and Mercury are derived from two planetary embryos that randomly avoided being accreted into a larger body, out of 20 original embryos (the rest having accreted into Venus and Earth), then it is statistically probable that one of those had its mantle stripped in one or two hit-and-run collisions. The same reasoning applies to pairwise accretion of planetesimals in the early Solar System, in which the relic bodies, which avoided becoming accreted, would be expected to have a wide diversity of compositions as a consequence of hit-and-run processes.Press release This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only. Citation: Simulations show Mercury may have been victim of hit-and-run collision (2014, July 7) retrieved 18 August 2019 from https://phys.org/news/2014-07-simulations-mercury-victim-hit-and-run-collision.html Mercury passes in front of the Sun, as seen from Mars Mercury, as every school kid knows, is the planet in our solar system closest to the sun. It’s also an anomaly because its core makes up approximately 60 percent of its mass (as compared to just 30 percent for Mars, Venus and Earth). Scientists have proposed theories to explain such an oddity, usually suggesting a collision of some sort must have taken place. A normal impact would have resulted in a loss of lighter elements, however, thus it’s been difficult to make such theories work. To better understand what might have happened Asphaug and Reufer ran computer simulations that showed a proto-Mercury colliding with various sized planets at various speeds and angles. They found that if a planet about the size of modern Earth collided with proto-Mercury at just the right angle and speed, it would have been possible for proto-Mercury to lose a large portion of its mantle due to it being stripped away. Furthermore, they noted that such an impact would not result in the proto-Mercury being caught in the larger planet’s gravity, effectively turning it into a moon. Such a collision, they also note would have resulted in much of the material ejected into space falling back to the target body, resulting in it being more metal rich than before the impact.Simulations can’t prove what happened of course, especially when they are used to describe theoretical events that occurred so long ago, but because they are based on known factors such as the current state of the planets in our solar system and data from spacecraft such as MESSENGER that entered Mercury’s orbit back in 2012, they can offer scientists realistic options to consider when studying planetary evolution. Journal information: Nature Geoscience Explore further © 2014 Phys.org (Phys.org) —A pair of researchers with Arizona State University has created computer simulations that show that Mercury may have a relatively large metal core because it was the victim of a hit-and-run collision with another proto-planet—a collision that resulted in much of its non-metallic mantle being stripped away by the larger body. In their paper published in the journal Nature Geoscience, Erik Asphaug and Andreas Reufer describe how they ran many computer simulations designed to better understand planet formation in our solar system, and found that under just the right circumstances, a glancing blow collision between proto-Mercury and another proto-planet could have resulted in the current makeup of Mercury.
© 2017 Phys.org Citation: New insight into proving math’s million-dollar problem: the Riemann hypothesis (Update) (2017, April 7) retrieved 18 August 2019 from https://phys.org/news/2017-04-insight-math-million-dollar-problem-riemann.html Over the past 150 years, mathematicians have found literally trillions of nontrivial zeros, and all of them have a real of component of ½, just as Riemann thought. It’s widely believed that the Riemann hypothesis is true, and much work has been done based on this assumption. But despite intensive efforts, the Riemann hypothesis—that all of the infinitely many zeros lie on this single line—has not yet been proved.Identical solutionsOne of the most helpful clues for proving the Riemann hypothesis has come from function theory, which reveals that the values of the imaginary part, t, at which the function vanishes are discrete numbers. This suggests that the nontrivial zeros form a set of real and discrete numbers, which is just like the eigenvalues of another function called a differential operator, which is widely used in physics.In the early 1900s, this similarity led some mathematicians to wonder whether there really exists a differential operator whose eigenvalues correspond exactly to the nontrivial zeros of the Riemann zeta function. Today this idea is called the Hilbert-Pólya conjecture, named after David Hilbert and George Pólya—despite the fact that neither of them published anything about it. “Since there is no publication by Hilbert or Pólya, the exact statement of the Hilbert-Pólya program is subject to some extent to interpretation, but it is probably not unreasonable to say that it consists of two steps: (a) find an operator whose eigenvalues correspond to the nontrivial zeros of the Riemann zeta function; and (b) determine whether the eigenvalues are real,” Brody said. “The main focus of our work so far has been on step (a),” he said. “We have identified an operator whose eigenvalues correspond exactly to the nontrivial zeros of the Riemann zeta function. We are only beginning to think about step (b), and indeed how to tackle this challenge. Whether it will be difficult or easy to fill in the missing steps toward step (b), at this point we cannot speculate—further work is needed to get a better feeling as to the scale of difficulty involved.” The operatorOne of the interesting things about the newly discovered operator is that it has close ties with quantum physics.In 1999, when mathematical physicists Michael Berry and Jonathan Keating were investigating the Hilbert-Pólya conjecture, they made another important conjecture. If such an operator exists, they said, then it should correspond to a theoretical quantum system with particular properties. This is now called the Berry-Keating conjecture. But no one has ever found such a system before now, and this is a second important aspect of the new work.”We have identified a quantization condition for the Berry-Keating Hamiltonian, thus essentially verifying the validity of the Berry-Keating conjecture,” Brody said.Hamiltonians are often used to describe the energy of physical systems. The new operator, however, doesn’t appear to describe any physical system, but is rather a purely mathematical function.”It may be disappointing, but such a Hamiltonian does not seem to represent physical systems in any obvious way; or at least so far we found no indication that our Hamiltonian corresponds to any physical system,” Brody said.”But one might then ask ‘why publish in PRL?’ The answer is because many of the techniques used for some heuristic analysis in our paper that are suggestive are borrowed from techniques of pseudo-Hermitian PT-symmetric quantum theory developed over the past 15 years or so. The conventional understanding of the Hilbert-Pólya conjecture is that the operator (Hamiltonian) should be Hermitian, and one naturally links this to quantum theory whereby Hamiltonians are conventionally demanded to be Hermitian. We are proposing a pseudo-Hermitian form of the Hilbert-Pólya program, which to us seems worthwhile exploring further.” Real solutionsNow the biggest challenge that remains is to show that the operator’s eigenvalues are real numbers.In general, the researchers are optimistic that the eigenvalues are actually real, and in their paper they present a strong argument for this based on PT symmetry, a concept from quantum physics. Basically, PT symmetry says that you can change the signs of all four components of space-time (three space or “parity” dimensions and one time dimension), and, if the system is PT-symmetric, then the result will look the same as the original. Although nature in general is not PT-symmetric, the operator that the physicists constructed is. But now the researchers want to show that this symmetry gets broken. As they explain in their paper, if it can be shown that the PT symmetry is broken for the imaginary part of the operator, then it would follow that the eigenvalues are all real numbers, which would finally constitute the long-awaited proof of the Riemann hypothesis.It’s generally considered that a proof of the Riemann hypothesis will be very useful in computer science, especially cryptography. The researchers also want to determine what their results might actually mean for understanding more fundamental mathematical principles.”What we have explored so far contains little number-theoretic insights; whereas one might expect that, given its importance in number theory, surely any attempt that successfully makes progress on establishing the Riemann hypothesis would offer number-theoretic insights,” Brody said. “Of course this need not be the case at all, but nevertheless it would be of interest to explore whether any of the dynamical aspects of the hypothetical system described by our Hamiltonian might be linked to certain number-theoretic results. In this regard, semi-classical analysis on our Hamiltonian would be one of the next objectives.” In 1859, Riemann hypothesized that the nontrivial zeros of the Riemann zeta function lie on the vertical line (½ + it) on the complex plane, at which the real part is always ½. Credit: Jan Homann, Wikimedia Commons. Top: Riemann zeta function. Bottom: The new operator function. (Phys.org)—Researchers have discovered that the solutions to a famous mathematical function called the Riemann zeta function correspond to the solutions of another, different kind of function that may make it easier to solve one of the biggest problems in mathematics: the Riemann hypothesis. If the results can be rigorously verified, then it would finally prove the Riemann hypothesis, which is worth a $1,000,000 Millennium Prize from the Clay Mathematics Institute. While the Riemann hypothesis dates back to 1859, for the past 100 years or so mathematicians have been trying to find an operator function like the one discovered here, as it is considered a key step in the proof.”To our knowledge, this is the first time that an explicit—and perhaps surprisingly relatively simple—operator has been identified whose eigenvalues [‘solutions’ in matrix terminology] correspond exactly to the nontrivial zeros of the Riemann zeta function,” Dorje Brody, a mathematical physicist at Brunel University London and coauthor of the new study, told Phys.org.What still remains to be proven is the second key step: that all of the eigenvalues are real numbers rather than imaginary ones. If future work can prove this, then it would finally prove the Riemann hypothesis.Brody and his coauthors, mathematical physicists Carl Bender of Washington University in St. Louis and Markus Müller of the University of Western Ontario, have published their work in a recent issue of Physical Review Letters. Spacing of primesThe Riemann hypothesis holds such a strong allure because it is deeply connected to number theory and, in particular, the prime numbers. In his 1859 paper, German mathematician Bernhard Riemann investigated the distribution of the prime numbers—or more precisely, the problem “given an integer N, how many prime numbers are there that are smaller than N?”Riemann conjectured that the distribution of the prime numbers smaller than N is related to the nontrivial zeros of what’s now called the Riemann zeta function, ζ(s). (The zeros are the solutions, or the values of s that make the function equal to zero. Although it was easy for mathematicians to see that there are zeros whenever s is a negative even number, these zeros are considered trivial zeros and are not the interesting part of the function.)Riemann’s hypothesis was that all of the nontrivial zeros lie along a single vertical line (½ + it) in the complex plane—meaning their real component is always ½, while their imaginary component i varies as you go up and down the line. Explore further This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only. Journal information: Physical Review Letters A zero sum game More information: Carl M. Bender, Dorje C. Brody, and Markus P. Müller. “Hamiltonian for the Zeros of the Riemann Zeta Function.” Physical Review Letters. DOI: 10.1103/PhysRevLett.118.130201
There have been many theories regarding the reason for the changes in brightness, including multiple comets passing in front of it, a gas cloud, or an alien structure—but none have come close to being provable. Because of that, space scientists have been hoping and waiting for another dimming event to occur, an opportunity to examine the light changes in a variety of ways. Specifically, they would like to have multiple telescopes studying its spectra at the same time—if the light from the star is suddenly passing through a gas cloud, for example, researchers could tell by the way it impacts the light, even offering which types of chemicals might be in the gas. Examining the spectra over time would also allow scientists to discern if there is an object moving between us and the star.Making things difficult for the researchers was that dimming events are not periodic—they have instead proved to be quite unpredictable. That is why this new event has the space community excited, because it might be an opportunity to solve the mystery. To that end, word has gone out to telescope operators across the globe, even to amateurs, to suspend current activities and instead focus on Tabby’s star for as long as possible. Once the dimming event is over, it is hoped that massive amounts of data will have been collected which can be pored over by novices and experts alike, all searching for an answer for the strange dimming.ALERT:@tsboyajian’s star is dippingThis is not a drill.Astro tweeps on telescopes in the next 48 hours: spectra please!— Jason Wright (@Astro_Wright) May 19, 2017@ajebson @NASAKepler @LCO_Global @keckobservatory @AAVSO @nexssinfo @NASA @NASAHubble @Astro_Wright @BerkeleySETI @ESO its 2% in r’ band and looks like its the start pic.twitter.com/TjJdSY2ar9— Tabetha Boyajian (@tsboyajian) May 19, 2017 This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only. © 2017 Phys.org Citation: Tabby’s star dims again, multiple telescopes to examine its spectra (2017, May 22) retrieved 18 August 2019 from https://phys.org/news/2017-05-tabby-star-dims-multiple-telescopes.html Credit: @tsboyajian (Phys.org)—Telescope operators around the world have been notified that “Boyajian’s star” (officially known as KIC 8462852) has dimmed again, offering space researchers a unique opportunity to study the star, which has baffled scientists ever since its discovery by a team at Yale University in 2015 led by Tabetha Boyajian. Subsequently nicknamed Tabby’s star, it has been found to dim periodically to differing degrees, which cannot be attributed to a planet passing between it and us. At one point in time, it was found to have dimmed approximately 22 percent—by comparison, if a planet the size of Jupiter was to pass in front of our own star, an observer 1,300 light years away (the distance that Tabby’s star is from us), would see just a 3 percent reduction of light. Latest study of Tabby’s star offers more weirdness Explore further
Explore further It was another good week for physics as an international team of researchers offered new confirmation of Einstein’s General Theory of Relativity by using the Hubble Space Telescope to measure shifts in the apparent position of a star. Also, a team of researchers from several institutions in China demonstrated solving systems of linear equations with quantum mechanics—offering more evidence that if true quantum computers are ever made, they will likely be able to fulfill expectations. And a team of physicists reviewed three experiments that hinted at a phenomenon beyond the Standard Model of particle physics. © 2017 Science X Credit: Wikimedia Commons Best of Last Week–How antimatter forms, world’s first super telescope and why fathers treat toddler daughters different In space news, a team with the Center of Planetary Science announced that the ‘Wow!’ mystery signal from space was finally explained. Recorded in 1977, the mysterious signal had some suggesting it was evidence of aliens. And Ben Hoscheit, an undergrad at UW-Madison presented the results of his study to the American Astronomical Society that supported the idea that the Milky Way exists within a cosmological void. Also, a team at the University of Zurich announced that they had built the largest virtual universe ever simulated—cataloguing 25 billion virtual galaxies from 2 trillion virtual particles.In other news, an international team of collaborators announced that they had developed a new form of carbon that’s hard as a rock, yet elastic, like rubber. A team at Queen Mary University of London and Goldsmiths University of London found that they were able to improve people’s creativity through electrical brain stimulation by suppressing a part of brain processing that is normally involved in reasoning. And another international team announced that they had discovered the oldest Homo sapiens fossils at Jebel Irhoud, Morocco.And finally, if you’re under the impression that a glass of wine with dinner every night is healthy, you might want to think again, as a team from the University of Oxford and University College London conducted a study finding that even moderate drinking is linked to a decline in brain health. Long-term consumption of moderate amounts of alcoholic beverages, they claim, resulted in risk for hippocampal atrophy, a form of brain damage that impacts spatial navigation and memory. This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only. Citation: Best of Last Week – Possible phenomenon beyond Standard Model, Wow! mystery signal solved and alcohol impact on brain (2017, June 12) retrieved 18 August 2019 from https://phys.org/news/2017-06-week-phenomenon-standard-wow-mystery.html
DD Urdu has infused fresh blood in its programming with a bouquet of new serials and shows that encapsulate the essence of our heritage and culture and feature relevant societal issues and now they are set to enchant the audience with their creative brilliance. The step has been taken in continuation of the revamp activity initiated earlier this month. The time band of 6:30 pm to 10:00 pm has been scheduled for 40 new commissioned programmes. The shows will cover different genres to appeal to the different brackets of audience. The channel will showcase serial based on the memorable works of Urdu literary stalwart Saadat Hasan Manto, produced by Mukta Arts. Some of the fictions to be aired are based on classic Urdu literature like, Bagh-o-Bahar. Also Read – ‘Playing Jojo was emotionally exhausting’The popular genres like thriller, comedy and musical reality shows are also included in this bouquet. DD Urdu has roped in eminent TV personalities as director/producer of the programs, Parikshit Sahni is one them for example. A well known name of the music world, Ila Arun will direct one musical reality show titled Main Khayal Hoon Kisi Aur Ka, Mujhe Sochta Koi Aur Hai, this one hour reality show is scheduled on every Sunday at 8:00 pm. Other music shows based on devotion, ghazal and patriotic lyrics are scheduled in morning and evening like Naghma-e-Marifat, Sada-e-Watan and Junoon-e-Ghazal will be telecasted. Four documentary series on science, painting and Urdu poets, two chat shows – one on marginality issues and other on women discourse, one health show, one cookery show, one travel show, one docu-drama titled Hindustan Ki Talash written by minister Salman Khursheed, one literary programme Aaftab-e-Sukhan, one programme for children titled Nasha Masiha are scheduled to give a fresh look to DD Urdu. Also Read – Leslie doing new comedy special with NetflixOther serials like Akhir Kab Tak, Aangan, Firangee and Chiraagh are also to be aired. Adding more flavour to this feast of entertainment, 3 films are being telecast on Wednesday, Friday and Sunday at 2:00 pm, repeat at 10:00 pm. Some in-house programmes are being aired, like, Guftagoo- Walk the Talk, Mubahisa, Yaadon Ke Dareeche Se, Aina-e- Maazi and Mushaira.Some in-house programmes on National, Middle East, South Asia, neighbouring countries and international current affairs are also scheduled at 9:30 pm. 10 Urdu news bulletins are also on air.If you are a couch potato, take your pick.
Actor Hiten Tejwani is joining the cast of Meri Aashiqui Tumse Hi, which stars his wife and actress Gauri Pradhan Tejwani. He is ‘excited’ to work with his real life partner in the show.Hiten and Gauri were the leading pair in ‘Kutumb’, which went on air in 2001, and after many years, they are sharing the screen space once again. ‘Any role for an actor is exciting, but acting with your (one’s) wife is even more exciting. We’ll be spending more time on the sets now. Earlier, we used to shoot on different locations, now we’ll get to spend more time together,’ Hiten told IANS by phone from Mumbai. When asked how the experience of Meri Aashiqui Tumse Hi will be different from ‘Kutumb’, the actor said: ‘Well, the characters are different. Also, when we were shooting Kutumb, we weren’t married. But now we’re married.’
Kolkata: State Education minister Partha Chatterjee made it clear on Tuesday that there should be no compromise in the matter of attendance, in the colleges under Calcutta University.Responding to a poser on the agitation at Joypuria College on Monday evening after around 204 students were not allowed to appear for examination due to low attendance, the minister said, “The Choice Based Credit System (CBCS) has been introduced in all the colleges, where 10 marks has been reserved for attendance. There will be no compromise in this matter.” Also Read – Heavy rain hits traffic, flightsA section of students had sat on demonstration in front of the room of college principal Ashok Mukherjee, demanding that the 204 students who have been disallowed to sit for examination, should be allowed to do so. They also demanded slashing of fees, which they claimed have been hiked from Rs 2,000 to Rs 4,000. They further alleged irregular classes in the college.The agitation had continued till 1:20 am on Tuesday and was lifted only after intervention of the police. The principal and some senior teachers who remained stuck inside the college due to the agitation, also left late in the night. Also Read – Speeding Jaguar crashes into Merc, 2 B’deshi bystanders killedWith regards to alleged failure on the part of the police to arrest those named in the FIR of the alleged ragging at St. Paul’s Cathedral College in Amherst Street, the minister said, “They have been instructed to execute the arrest by the administration and they will have to do it.”On being questioned about the college suspending the non-teaching staff named in the complaint but taking no action against the three students who are also accused, he said, “If the college drags its feet over the incident, then Calcutta University, to which it is affiliated, will take a tough stand against the college.”A student at St. Paul’s Cathedral College was allegedly made to parade naked and the video circulated in social media after he had enquired about college funds.
Can’t figure out why you lose every time while playing poker with friends? Blame it on poor single-brain connection.According to a study, people with a stronger connection between two specific brain regions have a more cautious financial outlook.The researchers studied the connections between two brain regions— known as the anterior insula and nucleus accumbens and how the two work together.“Activity in one brain region appears to indicate ‘uh oh, I might lose money’, but in another it seems to indicate ‘oh yay, I could win something’,” said Brian Knutson, associate professor of psychology from Stanford University.“The balance between this ‘uh oh’ and ‘oh yay’ activity differs between people and can determine the gambling decisions we make,” he added. Using a novel MRI technique, Knutson found a tract that directly connects two brain regions.Participants were given $10 that they could gamble or not. Entering an MRI chamber, they could see a roulette wheel and the odds for winning or losing.In one bet, they had equal odds to win or lose $3. In another, they had higher odds of winning a smaller amount and small odds of losing a lot or vice versa. As the participants weighed the various gambles, the researchers tracked activity in the two brain regions.The findings revealed that even the cautious ones with a well-insulated connection would sometimes place risky bets. And when they did, the more cautious region stayed quieter while the enthusiastic region grew more active.“The study helps scientists and policymakers who want to better understand risky decision-making in the context of gambling and addiction and develop more effective interventions,” noted the authors in a paper that appeared in the journal Neuron.