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: Prospecting for Scientific ‘Gems’ with Google (2006, May 3) retrieved 18 August 2019 from https://phys.org/news/2006-05-prospecting-scientific-gems-google.html So how can one calculate the GPR of any site when you first need to know the GPR of all its neighbors? It’s not a problem to be solved by pencil and paper! The answer is found through a recursive calculation: every website in the network is initialized with the same GPR, so that a new GPR can be calculated for each website simultaneously. This calculation is repeated until all the values stabilize.Researchers Patrick Chen and Sidney Redner at Boston University, along with their colleagues Huafeng Xie and Sergei Maslov at Brookhaven National Lab, recently applied the PageRank algorithm to all 353,268 articles published by the Physical Review between 1893 and 2003. It comes as no surprise that on average, GPR correlates nicely with the citation index. More interesting are the outliers—those articles that somehow achieve a high ranking with relatively few incoming references.After applying PageRank, Chen et al. sorted the papers in this network by their GPR values. Their recent article provides a sampling of famous papers from the top hundred results. Number 85, with only three citations, is a startling poster child of this new approach! The paper in question is a classic example of delayed influence. While it was the first to present a model which today sees widespread use, its result was refined and popularized by other researchers in a separate article. The “child paper” has accumulated 680 citations but makes only ten references to other works itself. The original paper thus collects a large share of its child’s impressive impact.Nor is this the only example! Among the papers with over a hundred citations, most of the papers with an unusually high GPR are easily recognizable as seminal works. Such works compare favorably in overall influence with the very small population having over a thousand citations.While “influence” may be easy to measure crudely, it is hard to measure reliably. These results show that although the two methods are comparable, Google’s PageRank algorithm seems to identify important scientific papers more reliably than a simple citation index. If there is a lesson here, it is this: in giving due credit, one should not be short-cited! Reference: Patrick Chen, Huafeng Xie, Sergei Maslov, & Sidney Redner 2006, “Finding Scientific Gems with Google”, xxx.lanl.gov/physics/0604130By Ben Mathiesen, Copyright 2006 PhysOrg.com Science is all about quantitative measurement, so it should come as no surprise that scientists have a long tradition of measuring their influence on each other. Traditionally, the most important measure of scientific impact has been the number of citations an article receives — but this method’s chief virtue is its simplicity. The authors of any given paper are much more likely to reference recent works, so a result whose importance is not immediately recognized can end up with a much lower citation index than it deserves. A well-written and relevant paper is typically referenced by two or three dozen papers, mostly from researchers working on the same highly specialized problem. A particularly useful or innovative result will often receive a hundred or more citations. Seminal works can achieve over a thousand citations, although they usually take decades to reach that point. While the system works well overall, it has no way of distinguishing a highly relevant citation from the polite mention of a colleague’s work.Many articles, for example, include an introduction section describing the history and current status of their specialized subject. This section can easily generate up to half of a paper’s references, even though few of the results given mention are actually used.A database of scientific literature is very similar in structure to the World Wide Web. Just as individual web pages are connected to each other by one-way links, journal articles are connected to each other by one-way citations. The number of external sites linking to a given website, or “in-degree”, is equivalent to the citation index of a given article. When Google tackled the problem of ranking websites by their influence, it didn’t consider the in-degree to be an appropriate measure. This would make it too easy to inflate the importance of a site by creating a host of useless linking pages. Instead they crafted a customized statistic, the Google PageRank (GPR) algorithm.To illustrate this algorithm, consider the webpage PhysOrg.com. PageRank finds every other webpage with a link to PhysOrg.com, and divides each neighbor’s GPR by its total number of outgoing links. The GPR of Physorg.com is then calculated as the sum of all these factors. In other words, each site in the network can be thought of as evenly distributing its influence over all the sites that it links to. A page thus gains influence mainly by being associated with other influential pages. (The actual algorithm is a little more complicated, but this is its essential feature.) This method strikes a nice balance between content and connectivity, reducing the influence of high-traffic directories on the sites that they list.
Samsung Shipping Samples of New High-capacity NAND Solution to Mobile Customers Explore further The removable SD flash card is only 1 mm thick and 0.7 mm high and will come into production in February. The card comprises a card controller and eight 30-micron thick stacked chips. Samsung says it is the highest capacity microSD ready for production. Users will be able to insert the 32-Gbyte micro SD card into their phone or other device via the built-in micro SD slot. The 64-Gbyte flash chip is 1.4 mm thick and consists of sixteen stacked chips and a storage controller. This moviNAND embedded memory module has been in commercial production since December last year and will be the first to reach the marketplace. It doubles the memory of current memory modules such as that in the latest Apple iPhone.Higher capacity devices such as Samsung’s new offerings will allow mobile devices such as smartphones and media players to have increased memory, and demand for more memory is expected to increase as the market for mobile devices and the applications they run continues to grow. Executive President of Memory Marketing for Samsung, Dong-Soo Jun, said the new memory solutions will bring the storage capacity of computers to mobile devices.The expected cost of the two new high-density storage devices has not been released. (PhysOrg.com) — Samsung Electronics has announced two new flash chip storage devices for mobiles: a removable 32-Gbyte micro SD (secure digital) card and a 64-Gbyte moviNAND flash memory module. Both are based on Samsung’s own 30 nanometer class 32-Gbyte NAND flash memory chips, which use lithography technology that allows much more storage in a smaller unit. © 2010 PhysOrg.com Samsung 32GB microSD memory card Citation: Samsung’s new flash chips for mobile devices (2010, January 14) retrieved 18 August 2019 from https://phys.org/news/2010-01-samsung-chips-mobile-devices.html 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.
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. © 2010 PhysOrg.com A specialist in radiocarbon dating from Oxford University, Thomas F. G. Higham developed a new method of radiocarbon dating with ultrafiltration which is able to remove contaminants to better receive an accurate dating. Radiocarbon dating measures a radioactive isotope carbon (carbon 14) which decays at a predictable rate after death. In specimens older than 30,000 years, very little carbon remains.Higham, along with archaeologist Ron Pinhasi from University College Cork in Ireland examined the bones from a Neanderthal child found in the Mezmaiskaya Cave location in the northern Caucasus Mountains. Their new radiocarbon dating method put this fossil at 39,700 years old. A previously found fossil at this site had been dated at 29,000 and was being re-examined with the new method.Higham is re-dating Neanderthal sites throughout Europe and believes all remains will be changed with none begin younger than 39,000 years old. Because of this new find, he believes there is now no evidence that Neanderthals and modern humans were co-existing in Europe for very long at all, and that there is even the possibility that the Neanderthals demise was at the hands of the modern human.This is where the debate begins, as geneticists reported last year that 2.5 percent of the modern human genome is derived from the Neanderthal genome. There is evidence of Neanderthals co-existing in the Near East some 100,000 years ago, as well as in Europe 40,000 years ago. With the new carbon dating timeline, it is now believed that interbreeding between the two did not occur in Europe but rather during that first encounter. More information: Revised age of late Neanderthal occupation and the end of the Middle Paleolithic in the northern Caucasus, PNAS, Published online before print May 9, 2011, doi: 10.1073/pnas.1018938108AbstractAdvances in direct radiocarbon dating of Neanderthal and anatomically modern human (AMH) fossils and the development of archaeostratigraphic chronologies now allow refined regional models for Neanderthal–AMH coexistence. In addition, they allow us to explore the issue of late Neanderthal survival in regions of Western Eurasia located within early routes of AMH expansion such as the Caucasus. Here we report the direct radiocarbon (14C) dating of a late Neanderthal specimen from a Late Middle Paleolithic (LMP) layer in Mezmaiskaya Cave, northern Caucasus. Additionally, we provide a more accurate chronology for the timing of Neanderthal extinction in the region through a robust series of 16 ultrafiltered bone collagen radiocarbon dates from LMP layers and using Bayesian modeling to produce a boundary probability distribution function corresponding to the end of the LMP at Mezmaiskaya. The direct date of the fossil (39,700 ± 1,100 14C BP) is in good agreement with the probability distribution function, indicating at a high level of probability that Neanderthals did not survive at Mezmaiskaya Cave after 39 ka cal BP (“calendrical” age in kiloannum before present, based on IntCal09 calibration curve). This challenges previous claims for late Neanderthal survival in the northern Caucasus. We see striking and largely synchronous chronometric similarities between the Bayesian age modeling for the end of the LMP at Mezmaiskaya and chronometric data from Ortvale Klde for the end of the LMP in the southern Caucasus. Our results confirm the lack of reliably dated Neanderthal fossils younger than ∼40 ka cal BP in any other region of Western Eurasia, including the Caucasus. (PhysOrg.com) — According to a newly released report in The Proceedings of the National Academy of Sciences, a newly refined method of radiocarbon dating has found that Neanderthals died off much earlier than originally believed. Where previous testing had shown fossils as young as 29,000 years ago, this new method puts the date closer to 39,000 years ago, sparking the debate that Neanderthals and modern humans probably never interacted in Europe. Explore further Scientists redate Neanderthal fossils Citation: Neanderthals died out earlier than originally believed (2011, May 10) retrieved 18 August 2019 from https://phys.org/news/2011-05-neanderthals-died-earlier-believed.html Homo neanderthalensis, adult male. Credit: John Gurche, artist / Chip Clark, photographer
Comedy of Terrors is all about ‘confusion within confusion’. It is an adaptation of Dario Fo’s one of the best plays. Directed by S P Singh and written by Ajay Shukla, the act was staged at Shri Ram Centre on May 31. The story of the play revolves around
Media baron Peter
Summer heat is becoming unbearable with every year but the only sweet recollection we associate this season with, is mangoes. The pulpy, sweet and flavourful king of fruits keeps us happy irrespective of the killer heat waves. To relish certain innovative dishes and a selection of mango-inspired dishes, one can head to The Spice Route at The Imperial in the national Capital. The collection menu created by Chef Veena Arora is all set to raise the bar for Mango lovers this season. As summer is the time to drool over mangoes and the excitement becomes extraordinary when they rule South East Asian palate. Also Read – ‘Playing Jojo was emotionally exhausting’The various dishes made using this most sought-after fruit has been relished over two decades with Chef Veena’s Summer Collection Menu. This year’s menu features Chef’s selections and creations inspired from the regions of Kerala, Sri Lanka, Thailand and Vietnam. Under the umbrella cuisine of The Spice Route, the menu promises to steal hearts with traditional specialties put together with ripe or raw mangoes, complemented with Chef’s specials. For instance Amba Isso Temperadu is the Sri Lankan style Prawns stir fried with curry powder and slivers of raw mango. Alleppy Fish Curry is made with Sole fillet and raw mango in a Kerala style curry. Kaeng Phed Phol-La-Mai is made with ripe mangoes and assorted fruits, cooked in Thai Red Curry, is truly exclusive as it is made only with fruits and takes its inspiration from Thai Duck curry. Also Read – Leslie doing new comedy special with NetflixChef Veena has delicately balanced spices with mango in all her offerings. The old favourites have been retained in the menu like Ga Xao Hot Dieu, which is a stir-fried Chicken with fresh Mangoes and Cashew nuts made in Vietnamese style. Yum Mamuang is the Chef’s special as it is basically a signature salad of fresh grated green mango tossed in spicy and tangy Thai dressing.Chef Veena Arora, Chef De Cuisine, The Spice Route says, “Summer Collection menu has been close to my heart since the time The Spice Route opened doors, and invokes timelessness for me, each time I start planning it. Inspired by fashion fraternity, the menu is whipped up to dish out something unique for the patrons from the landmark kitchen of this world famous restaurant. The interesting raw and ripe mango based South-East Asian recipes are refreshing like the advent of summer ought to be and a celebration of the season, of course. “Most of them are my own creations, wonderfully complemented by rice, chicken, prawns, sole fish, veggies and exotic spices. People in Thailand love their food with fruits and that’s why the complete menu revolves around mango, the favourite summer fruit. “Whether it is Sri Lankan prawns or the Thai Red curry with fruits, my creations this year will truly raise the satisfaction quotient for mango seekers. I have somehow tried to keep the fruit central to the palate, layering and balancing it with other flavours.”
Kolkata: ‘Ahare Bangla’ 2018 — the food festival will start from Tuesday at New Town Mela Ground in Rajarhat.The food festival will continue till November 25. This is the fourth year when the state government is organising the festival supported by various its departments such as Agriculture, Agriculture Marketing, Fisheries, Food Processing Industries and Horticulture, Micro, Small and Medium Enterprises and Textiles department and Animal Resources Development department. There will be 125 stalls in Ahare Bangla 2018, where 55 well known restaurants and caterers will be present. Celebrity chefs will also be taking part in the food festival. It may be mentioned that last year there were 108 stalls. With the overwhelming response from people, the number of stalls has been increased, said Anil Verma, Principal Secretary of the Animal Resources Development (ARD) Department. Also Read – Rain batters Kolkata, cripples normal lifeThe festival will be inaugurated on Tuesday at 6 pm and remain open from 12 noon to 9 pm till November 25. There will be a cultural programme in the festival. In the festival, four government organisations and 30 sweet or dessert shops will be taking part. There will be 36 stalls at Ahare Biki Kini, which is an exhibition-cum-sale hanger. Various food ingredients and “ready-to-eat” food will be made available by the government or government promoted organisations at Ahare Biki Kini. ‘Dheki’ that was one of the main attractions last year will be there this time as well.
Kolkata: Bengal government is going to reserve seats up to 30 percent for the students having domicile in the state and aspiring law students.Seats would also be reserved up to 5 percent for the poor meritorious students in the same field. The West Bengal National University of Juridical Sciences (Amendment) Bill, 2018 has been passed in the Assembly on Tuesday. It would allow the state government to reserve the seats for the students from the state. Also Read – Rain batters Kolkata, cripples normal lifeMoloy Ghatak, the minister of Judicial and Law Department, said in the Assembly on Tuesday that there are many law aspirants in the state who are unable to pursue law studies due to poverty. The minister said many students from the state will get the opportunity once the law is enforced. Ghatak also clarified that the students would secure admission in West Bengal National University of Juridical Sciences on the basis of merit — a test is conducted at the National level. Despite having being featured on the merit list, many poor but meritorious students cannot afford to study law. This had prompted the state government to amend the existing law of the state. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killed”The students whose names would feature on the merit list but face economic challenges would be given the opportunity to study law by reserving seats up to 5 percent following the amendment. Seats would be reserved up to 30 percent for the students who have domicile in the state, if they find place on the National merit list,” Ghatak said in the Assembly. The minister also maintained that his department had approached Chief Minister Mamata Banerjee saying there are many students from Bengal who have been able to pursue law studies as they are economically challenged. After listening to the proposal, the Chief Minister assured that steps would be taken in this regard. It may be mentioned that earlier there was no provision in the law which could have allowed the state government to reserve seats for the candidates having domicile in the state. Some other states give opportunity to the students having domicile in their respective states, the minister told the House on Tuesday. While the Bill was tabled in the Assembly, Snehasish Chakraborty, a Trinamool Congress MLA said this move by the state government would be extremely beneficial for the students domiciled in the state. He also alleged that the Left Front government never thought of amending the law, paving way for the poor students to study law.
Kolkata: Chief Minister Mamata Banerjee, while convening a district review meeting in Namkhana, expressed her dissatisfaction over non-completion of the power Grid project at Bhangar in South 24-Parganas.Banerjee sought explanations from the Power department officials on why the project has not been completed yet. She also pulled up Sunil Gupta, additional chief secretary of the Power department and demanded an explanation from him regarding the delay. Also Read – Rain batters Kolkata, cripples normal life”Why has there been a delay when the state government has resolved the issues related to the construction of the power grid?” questioned an irate Chief Minister at the meeting. The Power department officials in the district told the Chief Minister that the project has been delayed due to some technical problems, which will be resolved soon. Meanwhile, the local residents on Thursday morning staged a protest demonstration at the project site, stalling the construction of a tower within the compound. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedSome local residents gathered outside the power grid site, raising their voice to fulfill certain demands. Some of them alleged on Thursday that other development projects which were promised by the government earlier have been stalled as well and hence they would not allow the power project to continue. A high-level meeting would be conducted in the area in this regard. Senior police officers in the district rushed to the spot following the agitation. Some of the villagers, who are members of the Jami Jibika Bastutantra O Paribesh Rakshya Committee (JJBPRC), alleged that the local administration had assured them that dredging of river would take place and a hospital would be set up, but nothing has happened. After a logjam in the power grid project in Bhangar for some time, the matter was finally resolved following intervention of the Power department and administrative officials in the district. JJBPRC members claimed that the government had agreed to meet certain demands of them, including the introduction of vocational training for the unemployed youths in the area and also setting up a cold storage for fishermen and farmers. They alleged that their demands were not properly met. The villagers also alleged that some miscreants have been threatening to resort to violence once the project gets completed. They threatened to stall the project if their demands are not met. A member of the JJBPRC said that they have allowed doing some work inside the sub-station and final decision would be taken on Friday. After a long process of dialogue and deliberations, the government was finally able to resolve the issue and the project was finally flagged off in August this year. The state government has agreed to increase the amount of compensation to people who will lose their land due to the project.
In an event that focused on empowering women and youth of today, BLUES, in association with India Afghan Foundation, Andhra Pradesh, state government organised an International cultural program in New Delhi. The programme which ran for 120 days, across 15 categories, held its grand finale ceremony on April 30 in which 100 participants from all across India participated. “A largely ignored yet a hugely important section of this society, BLUES intends to focus on how they can be empowered, so as to lead the lives of their choice. An empowered woman reduces the gender disparity and leads to equality of men and women in the society,” said a spokesperson in a statement. Also Read – Add new books to your shelfDr Shaida Mohammad Abdali, Ambassador of Afghanistan to India was present as the Chief Guest on the program along with other dignitaries: R.P. Swami Secretary-General, ICCI, Prof Dr P.S.N. Rao, chairman of Delhi Urban Art Commission, Dr P.V. Ravi Ph.D Chairman of Park College of Engineering and Technology, Dr Amarendra Khatua Former Secretary, Ministry of External Affairs, Director General of ICCR, Sanjana Jon, and International fashion designer and social activist, Varija Bajaj. Vani Madhav – Odissi Exponent, Sangita Chatterjee – Kathak exponent, Sangeeta Mazumdar – Kathak Exponent, Sr Rita Mehrotra Former Principal Kamla Nehru College, Paridhi Sharma – Fashion Designer, and Shruti Shukla were also present on the occasion. Also Read – Over 2 hours screen time daily will make your kids impulsivePayal Swami, President of BLUES Talent Hunt said, “BLUES focuses on women and youth empowerment as they are the pillars of today’s nation. BLUES has now completed 10 years of servicing society through cultural activities and giving chance to women, kids and youth with no age and gender bars to achieve new heights. BLUES is opening its wings and has launched Payal Foundation that will work nationally and Internationally to make the women and youth independent in today’s world”. Each category had winners from solo dance, group dance, duet dance, singing, Mr and Mrs Delhi 2018 and kids Modelling. While Mrs. Delhi title went to Manju Chaudhary, followed by Mrs Amrita and Mrs Anjana, Shivanjali Group won in the duet dance category. The programme had a unique amalgamation of Indo-Afghan dance like Attan and Qarsak Dance. Participants from Afghanistan, Kashmir, Andhra Pradesh, Delhi-NCR Andhra, Telangana, Tamil Nadu, Uttar Pradesh, Haryana participated in the event.