Optimal intermediate trading node locations small circles for all pairs of 52 major securities exchanges large circles. While some nodes are in regions with dense ﬁber-optic networks, many others are in the ocean or other sparsely connected regions. Image credit: APS, DOI:10.1103/PhysRevE.82.056104 Relativistic trading: The speed of light isn’t fast enough for some market transactions 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. More information: Relativistic statistical arbitrage, A. D. Wissner-Gross and C. E. Freer, Phys. Rev. E 82, 056104 (2010) DOI:10.1103/PhysRevE.82.056104 (PhysOrg.com) — While most people know that the shortest distance between two points is a straight line, this concept is proving even truer in the world of stock trading. In a world where buying low and selling high means all the difference, racing the speed of light between to different financial markets can mean greater profit. With financial markets being located all over the world, stock trading has become reliant on the speed of fiber optic cables and their ability to process information. While fiber optic cables are currently operating at about 90 percent of the speed of light, Dr. Alexander Wissner-Gross shares how companies might be able to exploit physics and position themselves in locations capable of more competitive speeds and transactions.In a paper first released in 2010 in the Physical Review E, Dr. Wissner-Gross determined locations that are at the most optimal sites to best compete with the current locations of financial markets. With the idea that the quickest route between two points is a straight line, he determined locations which would essentially be right in the center of that line. This location being ideal in the fact that you then had the shortest distance to cover for both markets, thus better setting your business up to buy low and sell high between the two markets.For example, should you be a trader working off the New York Stock Exchange and the exchanges in Europe, your ideal location would end up somewhere in the middle of the Atlantic Ocean. However, while this information is valid, there are not many companies ready to construct a floating office.With this problem in mind, Dr. Wissner-Gross is now looking at determining land points which would approximate these mid-ocean locations. Using the above example of New York and Europe, he would now look at a location such as Nova Scotia.This physics trick may just be able to provide a very competitive edge to many companies, and over the years, we may just see many financial trading hubs popping up in the least likely locations. No more will they be dependent on buzzing cities and large markets, but they could be springing up in rural areas that provide the best locational advantage to cutting the distance needed to travel the world of fiber optic cables. Explore further © 2010 PhysOrg.com Citation: Physics could help financial traders (2011, March 24) retrieved 18 August 2019 from https://phys.org/news/2011-03-physics-financial-traders.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. Explore further (Phys.org) — Technology industry giants are extending their lines of business from PCs, tablets and phones into owning a piece of the action of TV sets and content services. Apple and Google have got a lot of press over designs on TV-playing devices in people’s homes. Now Intel is staking its claim, too. Intel has been working out a business plan to issue a set-top box with a subscription TV service. The key feature that Intel hopes will turn the profitability corner is facial recognition technology. Intel is thinking along the lines of a TV service using a set-top box employing facial recognition to tell who is watching so that the TV can deliver more targeted ads. Google, Intel, Sony team up on Google TV platform Citation: Intel wants piece of TV biz via face time (2012, June 10) retrieved 18 August 2019 from https://phys.org/news/2012-06-intel-piece-tv-biz.html Facial recognition would be used to detect the gender and age group of the people viewing a TV set at any one time. The set-top box would check out each person watching in front of the TV to deliver more targeted ads that would be specifically chosen to cater for the TV-viewing audience.Targeted, demographically suited advertising is generally considered the ideal way of guaranteeing advertising success. As for privacy, nothing would be detected beyond age and gender. Other identifying data would not be made known. Intel’s plan also involves keeping costs down by featuring smaller packages of TV networks instead of the standard large bundles of many channels. Intel would be seeking to win over subscribers with attractive pricing while using facial recognition technology to deliver targeted advertising. So far, though, the news of such a service has not gone over well with the general public, based on comments on news sites and via Twitter. A story headline further reflected reaction: “Intel Wants To Sell Your Face To Advertisers.” That was the header from redOrbit. On the heels of the Intel TV story released by Reuters came a Reuters blog report that people, once reading about the plan, are annoyed. One reader said he would never allow a set-top box pointing a camera in the house. Another was upset over the idea of having kids exposed to targeted ads constantly, amounting to more brainwashing of young people. “So gross,” and “how creepy” were other comments about facial recognition technology planned.While nothing more than gender and age would be tracked, an emotional reaction to camera-tracking in viewers’ homes is evident and, as observers note, may be a hurdle to an extent that Intel has not yet realized. Intel hopes to launch its video service before the end of the year, according to sources in a report from Reuters. © 2012 Phys.Org
Two morphotypes (morphs I, II) of P. borbonicus, a symbiont of Ficus mauritiana. The beard-like labial morphology is a novelty known only from this species and P. sycomori. Scale bar, 10μm. Credit: Vladislav Susoy & Jürgen Berger Journal information: Science Advances As the team notes, it is not uncommon for a single species to have many forms, dogs are one good example—other animals have different coat colors or wing patterns, depending on where they live, etc. But it is unusual for a single species to exist in as many as five different forms where they are so different it is difficult to make them out as from the same species. In this case, the nematoads are of a type that live inside of figs—they are carried to their home when young, by wasps. As they grow, they can take on one of five different forms depending on the conditions they find inside the fig—most of the differences are in the way the mouth is structured. If there are other competing nematoads of another species in a single fig, for example, the worms grow a lot of teeth and survive by eating the other worms. Those that land in nematoad-free figs, on the other hand, instead grow mouths that are suitable for eating microbes.As to why the nematoads developed such diversification abilities, the team suggests it has to do with their isolated existence—they equate individual figs to islands, where a young nematoad is wholly at the mercy of its environment, which appears to be of five different major varieties. They note also that few nematoads actually manage to colonize new fruit, thus any species able to do so would naturally need to be able to take advantage of what is found once it arrives. They add that they have also found three related nematoad species that also have five phenotypes, which suggests the characteristic may not be as rare as was initially thought. They suggest there might be some species that are able to take on even more than five forms. Citation: Nematodes with five distinct forms found (2016, January 18) retrieved 18 August 2019 from https://phys.org/news/2016-01-nematodes-distinct.html (Phys.org)—An international team of researchers has found that at least one type of nematoad exhibits five distinct forms—each different enough that the microscopic worms were initially thought to be of different species. In their paper published in the journal Science Advances, the team describes their study of the worms that live in South Africa, Vietnam and on La Réunion Island and possible reasons for such diversity among a single species. Explore further More information: V. Susoy et al. Large-scale diversification without genetic isolation in nematode symbionts of figs, Science Advances (2016). DOI: 10.1126/sciadv.1501031AbstractDiversification is commonly understood to be the divergence of phenotypes accompanying that of lineages. In contrast, alternative phenotypes arising from a single genotype are almost exclusively limited to dimorphism in nature. We report a remarkable case of macroevolutionary-scale diversification without genetic divergence. Upon colonizing the island-like microecosystem of individual figs, symbiotic nematodes of the genus Pristionchus accumulated a polyphenism with up to five discrete adult morphotypes per species. By integrating laboratory and field experiments with extensive genotyping of individuals, including the analysis of 49 genomes from a single species, we show that rapid filling of potential ecological niches is possible without diversifying selection on genotypes. This uncoupling of morphological diversification and speciation in fig-associated nematodes has resulted from a remarkable expansion of discontinuous developmental plasticity. 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. A worm with five faces © 2016 Phys.org
Schematic of the experimental setup. (A) Heat flows from the hot to the cold spin (at thermal contact) when both are initially uncorrelated. This corresponds to the standard thermodynamic arrow of time. For initially quantum correlated spins, heat is spontaneously transferred from the cold to the hot spin. The arrow of time is here reversed. (B) View of the magnetometer used in our NMR experiment. A superconducting magnet, producing a high intensity magnetic field (B0) in the longitudinal direction, is immersed in a thermally shielded vessel in liquid He, surrounded by liquid N in another vacuum separated chamber. The sample is placed at the center of the magnet within the radio frequency coil of the probe head inside a 5mm glass tube. (C) Experimental pulse sequence for the partial thermalization process. The blue (red) circle represents x (y) rotations by the indicated angle. The orange connections represents a free evolution under the scalar coupling, HJHC = (πh/2)JσzHσzC , between the 1H and 13C nuclear spins during the time indicated above the symbol. We have performed 22 samplings of the interaction time τ in the interval 0 to 2.32 ms. Credit: arXiv:1711.03323 [quant-ph] The second law of thermodynamics says that entropy, or disorder, tends to increase over time, which is why everything in the world around us appears to unfold forward in time. But it also explains why hot tea grows cold rather than hot. In this new effort, the researchers found an exception to this rule that works in a way that doesn’t violate the rules of physics as they have been defined.The idea of entangled particles has been in the news a lot lately as researchers around the world attempt to use it for various purposes—but there is another lesser-known property of particles that is similar in nature, but slightly different. It is when particles become correlated, which means they become linked in ways that do not happen in the larger world. Like entanglement, correlated particles share information, though it is not as strong of a bond. In this new experiment, the researchers used this property to change the direction of the arrow of time.The experiment consisted of changing the temperature of the nuclei in two of the atoms that exist in a molecule of trichloromethane—hydrogen and carbon—such that it was higher for the hydrogen nucleus than for the carbon nucleus, and then watching which way the heat flowed. The group found that when the nuclei of the two atoms were uncorrelated, heat flowed as expected, from the hotter hydrogen nucleus to the colder carbon nucleus. But when the two were correlated, the opposite occurred—heat flowed backward relative to what is normally observed. The hot nucleus grew hotter while the cold nucleus grew colder. This observation did not violate the second law of thermodynamics, the group explains, because the second law assumes there are no correlations between particles. © 2017 Phys.org (Phys.org)—An international team of researchers has conducted an experiment that shows that the arrow of time is a relative concept, not an absolute one. In a paper uploaded to the arXiv server, the team describe their experiment and its outcome, and also explain why their findings do not violate the second law of thermodynamics. Wallflowers become extroverts in a crowd More information: Reversing the thermodynamic arrow of time using quantum correlations, arXiv:1711.03323 [quant-ph] arxiv.org/abs/1711.03323AbstractThe second law permits the prediction of the direction of natural processes, thus defining a thermodynamic arrow of time. However, standard thermodynamics presupposes the absence of initial correlations between interacting systems. We here experimentally demonstrate the reversal of the arrow of time for two initially quantum correlated spins-1/2, prepared in local thermal states at different temperatures, employing a Nuclear Magnetic Resonance setup. We observe a spontaneous heat flow from the cold to the hot system. This process is enabled by a trade off between correlations and entropy that we quantify with information-theoretical quantities. Citation: Experiment shows that arrow of time is a relative concept, not an absolute one (2017, December 1) retrieved 18 August 2019 from https://phys.org/news/2017-12-arrow-relative-concept-absolute.html Journal information: arXiv 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. Explore further
In the clamour for Hauz Khas Village, that is being touted as Delhi’s new ‘the’ zone for foodies, we often miss out on the potential of Connaught Place. Yes that very same zone in Lutyen’s Delhi that has restaurants packed by officegoers during the day and families and friends occupying the chairs at night. But sadly, CP has remained underrated and under-used in the city’s food map, even though some really good restaurants call it home. The regret came back to haunt me when I visited Life Caffe in Inner Circle recently. Even in the extremely cold winter night, when I visited this restaurant which has been intriguingly named Life Caffe, I found a few tables occupied. They have a lovely outdoor seating area complete with an open private dining room, but the chill forced us inside. Also Read – ‘Playing Jojo was emotionally exhausting’The interiors are done up in loungy cafe style, with slogans and quotes framed on the walls and a giant projector showing a cricket match, this could be one of your regular watering holes, with good munchies to go along. Continental, Italian, Japanese are all thrown in for good measure and I hopped skipped and jumped from one cuisine to another through the course of my meal. The food is tasty and the portions good enough to be shared. I really enjoyed the Kolhapuri keema tarts (see recipe) which was delicious and went perfectly with the red Sula that I ordered. Ditto for the Koliwada fish fingers. The Fotomaki sushi platter though was nothing to write home about and the same goes for the New Zealand lamp chops which could be served anywhere. The Chilli prawns would get a thumbs up and so would the desserts. I gorged on the Hot magic chocolate souffle, totally throwing my diet plans away for a toss. Should be on your list next time you are eating out at CP. If only to get a life!DETAILAt: Life Caffe, B49, Inner Circle, Connaught PlaceTimings: Noon to 1am phone: 43652222Meal for two: Rs 700 without alcohol
Plan India, the leading child-centered community development organisation, put together ‘National Workshop on Improving Quality of Life of Children’ in the Capital recently. The workshop was addressed by Govind Nihalani, Chairperson Plan India Board, along with other board of directors. The workshop aimed at sharing Plan India’s experiences and on improving quality of life of children primarily by implementing child centered community development approaches. These would be attended by field practitioners, policy makers, researchers, academicians, media and professionals from development agencies and corporate sectors that have been actively engaged in promoting child rights and reducing child poverty. Also Read – ‘Playing Jojo was emotionally exhausting’At the event in IHC, six key publications of Plan were released and a theatre performance was hosted on the theme of the workshop by Delhi’s acclaimed Ashmita Theatre Group. ‘Since last 30 years of working in India, Plan, through its CCCD approach, has improved the lives of over a million of children across the country and during this process; children and communities have provided insightful experiences on various facets of lives affecting them. A number of lessons have been learnt that have the potential of further creating better modules that will help in implementing value based programs in the communities,’ said Bhagyashri Dengle.Plan India is an NGO working to improve the lives of poor and needy children, their families and communities through an approach that puts children at the centre of community development. It encourages children to express their views and be actively involved in improving their communities.
The Lord was so pleased with Mahishasura’s devotion, that he blessed him with eternal life, declaring that no man, beast, demon or deity would ever be able to kill him. Taking advantage of this boon he caused destruction and tried to take over Lord Indra’s throne. All the gods invoked lordess Durga to defeat Mahishasur. He lost the combat with Durga and she killed him to restore the balance of good and evil.Retelling the same mythological story, a Kathak dance drama called Mahishasur Mardini, will be presented on the Capital stage. The show curated by Asawri Pawar, will be inaugurated on Monday at ICCR.
Our correspondent Kolkata: A woman has killed her husband after conspiring with a person with whom she had an extra-marital affair. The incident has created sensation in South 24-Pargana’s Sonarpur.The matter came to light after the woman’s boyfriend admitted his guilt before the investigators. Both the accused have been arrested on Wednesday night in this connection. The victim, Samir Mistri, a local Trinamool Congress was shot dead by the accused Chandan Mondal. The victim’s wife Madhumita had developed an illicit relationship with Mondal. The woman used to work at a canteen in Jadavpur while the victim was a Taxi driver. Also Read – Heavy rain hits traffic, flightsThe incident took place on the night of April 9 when the victim was having his dinner. The front door of their room was kept open by the woman to help her boy friend carry out the crime. According to the investigation, police said there was a quarrel between the couple after the victim came to know about the relationship.Police suspect that the accused might have committed the crime as the victim had been opposing their relation. As investigation advanced, police suspected that his wife was also involved. Also Read – Speeding Jaguar crashes into Merc, 2 B’deshi bystanders killedThe accused woman also told the police that she had been tortured by her husband. Her boyfriend was also arrested by the police on Wednesday from his residence in Baguipara area. He admitted the crime and told the police how they hatched the plan of gruesome killing. The accused also told the police that he rented a firearm for carrying out the crime. On the day of incident, he shot at the victim from the front door which was laid open by the victim’s wife. Police is also probing if any other person was involved in the crime.
China arrested 27,164 criminal suspects last year in the volatile Xinjiang and authorities have beefed up security in the violence-prone region which borders PoK and Afghanistan by deploying more troops, making it the country’s largest provincial-level military region.The military reinforcement comes against a backdrop of the US troops pulling out of Afghanistan and extremists launching terrorist attacks on civilian targets, state-run China Daily reported. Also Read – Pro-Govt supporters rally as Hong Kong’s divisions deepenXinjiang, the province with majority of Uygur Muslims is experiencing most violent attacks in by East Turkestan Islamic Movement (ETIM), an Al-Qaeda backed outfit which became active in the backdrop of unrest between Uygurs and Han migrants.Peng Yong, commander of the PLA Xinjiang military region, said troops will vigorously enforce border controls and carry out “realistic combat training”.The Xinjiang military region is a regional command that covers Xinjiang and the Ali area in the west of the Tibet not far from Indian border.
Kolkata: A private tutor, who allegedly molested a girl student, was badly beaten up by the victim’s family members and neighbours. He was later handed over to police.The incident took place in Mandalpara area of Avantipur in Shyamnagar on Tuesday morning. The family members of the victim alleged that the private tutor tried to rape the minor girl. The victim, a student of class V, used to go to his place at Mandalpara for nearly one year. The family members of the girl told police that like other days, she went to her tutor’s place at around 8 am on Tuesday. It was alleged that the tutor closed the door and attempted rape. Also Read – Heavy rain hits traffic, flightsLocals heard the screams of the minor girl. They rushed to the spot and forced the tutor to open the door. After being informed, the family members of the girl also came.Locals started interrogating the tutor as to why he had closed the door while giving private tuition to the girl. When he gave incoherent statements, the locals and the girl’s family members started beating him up. The victim also narrated the whole incident of how he had abused her. Also Read – Speeding Jaguar crashes into Merc, 2 B’deshi bystanders killedThe incident triggered tension in the locality on Monday evening. The private tutor fell ill after receiving several blows from the people. During interrogation by the locals, the tutor had admitted that he sexually molested the girl. The tutor was kept confined within his house for nearly one hour. Police reached and arrested the tutor. They are trying to know if he had committed similar crimes earlier. The family members of the victim have demanded stern actions against the private tutor.