Review Biometrics Technologies Measure Up Part 33

first_img How Ghana is acing its transition to mobile financial services Pattern RecognitionNot commonly recognized among the biometric technologies but widely used and gaining in popularity is the technique of behavior recording. These systems are computer programs that monitor particular behaviors like typing and purchasing to identify users.Credit card companies, for example, have records of your purchasing patterns. Any unusual purchases are flagged by a computer program and brought to the attention of a customer service representative who verifies the authenticity of the purchaser.They way you type – frequency of keystrokes and their duration – has been proven to be a very effective way to identify unauthorized users on computer networks.Internet sites you visit, programs and files you use and general work patterns can all be analyzed to prevent hackers from stealing sensitive information.The big advantages to this approach include low cost, high effectiveness and unobtrusive operation – most users are completely unaware of the software’s operation.ConclusionThe sharp increase in identity theft and the threat of terrorism combined with the falling prices of all biometric technologies, it’s predicted that the biometrics industry will explode as demand increases sharply in the next 3 to 5 years. Already many systems are in use and technology is improving to eliminate false positives that may have deterred buyers in the past.New inventions tend to cause backlash, but biometrics technologies, especially the clandestine ones, have provoked storms of protest from privacy groups and users. This may slow, but not stop rapid adoption. All experts agree more need to be done to address ethical and privacy concerns.Like the adoption of any new technology, there are many problems that still remain to be fully overcome, but the idea of an ID-less society is not far off. The sheer convenience, low cost and security are very attractive to businesses, governments and users alike.Who knows? One day you may be able to go about your business never having to present any form of artificial ID. Biometrics systems promise to make huge changes in the way we do business and identify ourselves. They also promise to invade our already beleaguered privacy and create a new breed of sophisticated criminals adept at hacking our biometric identities.Part 1, 2Copyright 2005 PhysOrg.com 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. (Part 1, 2) Biometrics technologies have come a long way from a slow start in the early 80s. Now they can be found almost anywhere and soon, almost everywhere.center_img Citation: Review: Biometrics Technologies Measure Up (Part 3/3) (2005, November 21) retrieved 18 August 2019 from https://phys.org/news/2005-11-biometrics-technologies_1_2.html Explore furtherlast_img read more

French team demonstrates paramagnetic properties of liquid oxygen drops

first_img More information: Magnetic control of Leidenfrost drops, by Keyvan Piroird, Christophe Clanet, and David Quéré, Physical Review E, Accepted Monday Apr 30, 2012AbstractWe show how a magnetic field can influence the motion of a paramagnetic drop made of liquid oxygen, in a Leidenfrost state on solids at room temperature. It is demonstrated that the trajectory can be modified both in direction and velocity and that the results can be interpreted in terms of classical mechanics as far as the drop does not get too close to the magnet. We study the deviation and report that it can easily overcome 180 and even diverge under certain conditions, leading to situations where a drop gets captured. In the vicinity of the magnet, another type of trapping is observed, due to the deformation of the drop in this region, which leads to a strong energy dissipation. Conversely, drops can be accelerated by moving magnets (slingshot effect). Journal information: Physical Review E Droplets levitating above a liquid surface show unusual motion (w/ video) Leidenfrost drops come about when a liquid is dropped onto a surface that is significantly hotter (above its boiling point) than it is, trapping vapor underneath which allows the drop to not only avoid instant evaporation, at least right away, but to hover over the surface. The effect is commonly seen when water is tossed into a hot pan; the drops that form move around faster than they normally would due to the absence of friction.Leidenfrost drops are used in a variety of industrial processes despite a lack of research into their physical properties. To learn more, the research team from Ecole Polytechnique looked to liquid oxygen drops because of their room temperature boiling point and also because they are paramagnetic and very easy to make.To make drops of liquid oxygen, the team poured liquid nitrogen into a metal container. As they did so, drops of liquid oxygen formed on the outside of the container due to condensation. Once the drops were produced, the team put them on a glass plate where under normal conditions they would slide around chaotically as water does in a hot pan. To control them, the team placed a small magnet underneath the glass.The team found that by moving the magnets they could control the paths the drops took and that angling the magnet caused different behavior; some were deflected while others swooped around the magnet, emulating the sling-shot effect scientists use to fling spacecraft away from a planet towards an established destination. Through trial and error they also found that in some instances they could cause the drop to actually orbit around the magnet.Interestingly, the group also found that the degree of friction involved with the drops appeared to fluctuate depending on the shape of the drops as they moved around, which might just lead to better processes for controlling Leidenfrost drops in industrial applications.The team believes their research might also lead to space travel modeling as the actions of the drops they manipulated with their magnets so closely mimic that of actually space travel situations. To further their research they have begun adding different particles to the drops to see how different materials impact their behavior. Citation: French team demonstrates paramagnetic properties of liquid oxygen drops (2012, May 21) retrieved 18 August 2019 from https://phys.org/news/2012-05-french-team-paramagnetic-properties-liquid.html © 2012 Phys.Org Explore further (Phys.org) — A team of French scientists studying the properties of Leidenfrost drops has found that liquid oxygen drops can be manipulated and controlled using a magnetic field at room temperature. They describe their work and the properties they’ve uncovered in a paper to be published in the journal Physical Review E. 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.last_img read more

Researcher propose new theory to describe how sabertoothed cats downed their prey

first_img Journal information: PLoS ONE © 2014 Phys.org 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. Prehistoric predators with supersized teeth had beefier arm bones Unmodified digitized image of the anatomical model used for studying bite mechanics in S. fatalis. (A) Lateral view. (B) Frontal view. The mandible has been fixed in a vertical position (simulating its vertical position against the neck of the prey) using a wooden base, metal brackets and wire. The cranium and vertebrae have been articulated using flexible vinyl tubing. Blue arrows: metal brackets; white arrow: vinyl tubing. Credit: doi:10.1371/journal.pone.0107456.g001 Explore furthercenter_img Saber-toothed cats have sparked the imagination of generations of children and adults alike, with their very long canines, the animals continue to strike fear in people to this day, despite the creatures being extinct for approximately 10,000 years. Over the years, scientists have offered various ideas to describe just how exactly the cats used their long teeth to bring down prey. Initial theories suggested they simply jumped on the backs of other animals and slashed at them with their teeth (hence the name saber) till the unfortunate victim died. A closer look revealed that such an approach was highly unlikely due to the toughness of the hide sported by most prey of the time, and the degree of muscle in the cats’ neck.More recently paleontologists came up with a theory called the “canine shear bite” which proposes that the cats jumped on the backs of victims first puncturing the skin with its lower jaw and then leveraging the neck to allow for slicing down into the victim with the long teeth. Brown claims this method wouldn’t work either because it wouldn’t generate enough force. He proposes that the cat’s first dug in just slightly with the lower jaw, for use as a lug, like a can-opener, then pushed mightily against the ground with their forelimbs. Such an approach, which Brown calls a “Class 1 Lever Model” would allow the cat to use the muscles in its legs, back, neck and jaws to bring down prey, providing much more leverage and force.Brown suggests further research, such as computer simulations would prove his idea correct, and furthermore, would likely explain the hunting techniques of most if not all of the “saber” beasts that once roamed the Earth killing with their massive teeth. More information: Brown JG (2014) Jaw Function in Smilodon fatalis: A Reevaluation of the Canine Shear-Bite and a Proposal for a New Forelimb-Powered Class 1 Lever Model. PLoS ONE 9(10): e107456. DOI: 10.1371/journal.pone.0107456AbstractThe jaw function of Smilodon fatalis has long been a source of debate. Although modern-day lions subdue large prey through the use of a suffocating throat bite, the dramatically elongated maxillary canines of S. fatalis suggest an alternative bite mechanism. The current literature favors a “canine shear-bite,” in which the depression of the cranium by the ventral neck flexors assists the mandibular adductors in closing the jaws. Although the model makes intuitive sense and appears to be supported by scientific data, the mechanical feasibility of “neck-powered” biting has not been experimentally demonstrated. In the present study, the computer-assisted manipulation of digitized images of a high-quality replica of an S. fatalis neck and skull shows that a rotation of the cranium by the ventral neck flexors will not result in jaw closure. Instead, the cranium and mandible rotate ventrally together (at the atlantooccipital joint), and the jaws remain in an open configuration. The only manner by which rotation of the cranium can simultaneously result in jaw closure is by an anterior rotation at the temporomandibular joint. Based on this finding, the author proposes a new Class 1 lever mechanism for S. fatalis jaw function. In this model, the mandible is immobilized against the neck of the prey and a dorsally directed force from the extension of the forelimbs rotates the cranium anteriorly at the temporomandibular joint. The maxillary canines pierce the prey’s neck and assist in clamping the ventral neck structures. The model is based on a maximum gape angle of approximately 90° and incorporates a secondary virtual point of rotation located slightly anteroventral to the temporomandibular joint. The Class 1 Lever Model is mechanically feasible, consistent with current data on S. fatalis anatomy and ecology, and may provide a basis for similar studies on other fossil taxa. Citation: Researcher propose new theory to describe how saber-toothed cats downed their prey (2014, October 2) retrieved 18 August 2019 from https://phys.org/news/2014-10-theory-saber-toothed-cats-downed-prey.html (Phys.org) —Independent researcher and pathologist Jeffrey G. Brown has self-published a paper on the open access site PLoS ONE, detailing what he believes is the correct interpretation of how the now extinct saber-toothed cat brought down its prey. He suggests prevailing views on the process wouldn’t work and proposes a new idea that is based on the same mechanism as an ordinary manual can opener.last_img read more

Art for the Aam Admi

first_imgCommon entails a group exhibition of paintings and sculptures.The term common (AAM)  is a wide fledged word these days in both political context and Bollywood industry. The core motto of this exhibition is to décorate the houses with affordable quality paintings and artworks. These days starting from a very middle class family to elite class people are generating an interest towards art and in housing art. However, buying art is again just not simple as buying some other confectionery or stationary stuffs. It includes sentiments and personal attachment along with budget which again goes as one of the major constraint.  To overcome these discussed factors consultants from Creativity Art Gallery are going to show case their new collection of art works by fair established names but in affordable prices. The collection will carry various ranges of paintings and sculpture in affordable traveling range of prices. The range is tentative to start from 15 thousand to 1 lakh. The aspects of colour and happiness would be the core hold for the show.WHEN: 10-30 MarchWHERE: Common Creativity Art Gallery, 29, GF, Hauz Khas Villagelast_img read more

Global art one roof

first_imgOne of the biggest art fairs of the country, Alla Prima International Art Fair organised by JMN Group was a modern and contemporary international art fair where around 1000 artist from 40 Indian and 50 international art galleries and institutions participated to show their works.The event commenced on December 12 at the Capital’s Talkatora Stadium and is on till today.  The event was curated by Nicola Davide Angerame (Turin, Italy), Dipto Narayan Chattopadhyay (India),  Laura Clemente (Spain)  who  have curated art shows like Art Basil, Frieze London, FISE Paris in the past. Also Read – ‘Playing Jojo was emotionally exhausting’Esteemed art galleries and art organisations from India and abroad participated in this fair to name few  Korea, Russia, USA, Spain, France, Greece, Romania, Bangladesh, Nepal and many other countries. From India, J S Art Gallery, Pioneer Art Gallery, Gallery Five, Ruki Art Gallery, Dhoomi Mal Art Gallery, Cymroza Art Gallery, Galerie Sara Arakkal, Art Gate Gallery, Art and Aesthetic Gallery, Gallery 1000a, Art Desh Gallery, Art Protégé Gallery, Third Eye Group and other esteemed galleries. Also Read – Leslie doing new comedy special with NetflixWorks of eminent artists were displayed under one roof such as M F Hussain, F N Souza, S H Raza, Paresh Maity, A Ramachandran, Shuvaprasanna Bhattacharjee, Jogen Chowdhury, Ganesh Pyne, Ram Kumar, Satish Gujral, Arpita Singh,Jayashri Burman, Chintan Upadhyay, Vijender Sharma  displayed by various art galleries. This fair also showcased art works, installations, body arts, video art, film screening, culturual programmes, art workshops,panel discussions, debates and talks about art aesthetics.  Rajiv Chakraborty, Managing Director of JMN Group said, “The idea behind Alla Prima is to provide an affordable platform for art. Other artist look for opportunities to display their work, but I believe in creating opportunities for others.”The event was graced by eminent artists and prominent people from the field of art making it a successful art fair. With the aim of providing art an approachable platform, JMN group has been regularly organising art fairs and exhibitions in the past.last_img read more

SIT set up to probe into murder of Sheikh Dildar

first_imgKolkata: A special investigation team (SIT) has been set up to probe into the murder of Trinamool Congress worker Sheikh Dildar, besides changing the Investigating Officer (IO) of the case. He was shot dead in Suri in Birbhum on Monday over a fallout during the filing of nomination of the Panchayat polls.Sources said both the steps that is to form an SIT and to change the IO were taken to expedite the process of the investigation.The new IO of the case is the inspector-in-charge Debashis Panda. Earlier, sub-inspect, Soumo Dutta, was the IO of the case. Also Read – Heavy rain hits traffic, flightsThere are senior officers of Birbhum District Police and Suri police station in the SIT. The SIT will take necessary steps so that the probe can be expedited and they would get to know about others involved in the incident. It is learnt that there was not much development in connection with the recovery of firearms used in the incident and it could be the reason that has prompted the change in the IO. Moreover, there are also involvement of miscreants from Jharkhand who were deliberately brought to create ruckus in Suri. Also Read – Speeding Jaguar crashes into Merc, 2 B’deshi bystanders killedIt may be recalled that Firhad Hakim, senior Trinamool Congress leader and the state Urban Development and Municipal Affairs minister, had said on the day of the incident that a group of miscreants from Jharkhand was brought in to create trouble and he had alleged that they were brought in by the BJP. “The group that created trouble at Mohammadbazar and Nalhati was also behind the incident at Suri,” he said.Police are also looking into the matter and it is learnt that a team of policemen will be visiting Jharkhand to get hold of the miscreants. It may be mentioned that four BJP workers were arrested on Wednesday in connection with the incident.Police had conducted a raid at Koridha in Suri after receiving a tip off and arrested Sheikh Safiul, Gautam Kora, Bablu Sheikh and Asit Sarkar. All four were produced before the court and the police had pleaded for 10 days’ custody for all four of them. However, the court decided to remand to police custody for seven days.last_img read more

Adeles relationship with boyfriend Simon is amazing

first_imgOscar-winning singer Adele says the relationship she and her boyfriend of four-years Simon Konecki share is “amazing”. The 27-year-old songtress, who has always been a private person, said whatever she writes is because of the love and loyalty her partner gives her, reported Us magazine. “Being in such an amazing relationship with someone that’s so there for me and so loyal and is really part of my core now, that’s what made me write about everything I’ve ever done, because I’ve got his love. “I know that sounds a bit like I’m trying to write a Hollywood movie, but it’s only because of him and because of our kid and stuff that I’m all right,” Adele said.Like everyone else Konecki is also in love with Skyfall singer’s new album 25. “He cares about me more than anything. But he doesn’t care about the style of music that I make.”last_img read more

Will enlarged pictorial warnings reduce tobacco consumption

first_imgBut this is still not enough to reduce the consumption rate among the majority of habitual smokers, say stakeholders and experts.The Supreme Court recently ordered cigarette producers to comply with the health ministry’s new regulation mandating an increase in the size of the pictorial warning to 85 percent of the front and back panels of cigarette packets.However, many regular smokers who don’t buy full packets admitted that they are unaware about the order. “I have not seen the enlarged warnings as I don’t buy packets, but one or two cigarettes at a time,” said Vikash Shaw, who smokes about eight cigarettes a day. Terming the enlarged warnings as “futile”, Babu Hazra, a daily wage labourer, said: “What matters to me is only the sudden price rise.” Also Read – ‘Playing Jojo was emotionally exhausting’Leading cigarette producer ITC has retained the prices of most of its brands but reduced the stick sizes to overcome the 10-15 percent hike in tobacco taxes that was announced in this year’s union budget.Serviceman, Amitava Bhatacharya said although initially the enlarged warning looked scary, it could not stop him from smoking. “When I first saw that big warning image, I was indeed terrified. But eventually I surrendered to my addiction,” said Bhattacharya. Also Read – Leslie doing new comedy special with NetflixCigarette retailers too testified they have not seen any significant change in consumption rates.However, cigarette producers have complained that India’s legal cigarette industry is facing a continuous drop in demand because of high taxation and large pictorial warnings.Dhaneswar Patra, a roadside paan-waala, said, “Even before these warnings were printed on the packets, smokers knew that it is harmful. But still they consumed cigarette at their own will. The same is happening now too.” On the other hand, doctors and economists are giving a thumbs up to the new regulations. With almost one million people dying due to direct and passive smoking in India, medico S.K. Paira believed quitting tobacco is comparatively easier than other addictions.“Smoking creates mental dependency while alcohol and drugs create physical dependency in which withdrawal symptoms are fatal. Mental determination is the best way to give up smoking,” said Paira.Admitting that the overpowering craving for tobacco makes regular smokers overlook health warnings, psychiatrist Manoj Sharma felt that the enlarged pictorial warning has to be complemented with grass-root level awareness for reducing tobacco consumption. “Education at the school level is necessary for creating awareness about the ill-effects of smoking. Reducing tobacco consumption depends on the interplay of these two factors,” said Sharma.Economist Santanu Mitra said: “The enlarged warning may serve as a discouraging factor for first time smokers and those who are not regular or habituated smokers.” Papiya Sen, an anti-tobacco activist, accepting the fact that the message of the perils of smoking is not reaching out to the larger public who smoke beedis since there is no compulsion to cover 85 per cent of the beedi packets with pictorial warning, said: “We have to take one step at a time. I am sure sooner or later we will succeed in making the beedi companies print enlarged warnings too.”Statistics have shown that beedis account for 48 per cent of India’s tobacco consumption.last_img read more

ExBengal Minister Nirupam Sen dead

first_imgKolkata: Veteran Communist Party of India-Marxist (CPI-M) leader and former West Bengal Commerce and Industries Minister Nirupam Sen died early on Monday, party said. Sen was 72. The former politburo member succumbed to multi-organ failure around 5 a.m. at a private hospital in the satellite township of Salt Lake. Sen, who handled the industrial reconstruction, planning and power portfolios in the erstwhile Left Front regime under Chief Minister Buddhadeb Bhattacharjee, was suffering from neurological and kidney related ailments. Sen was elected to Bengal state assembly in 1987, 2001 and 2006 from Burwan South seat. He lost to Trinamool Congress candidate Rabi Ranjan Chattopadhyay in 2011. He was survived by his wife, a son and a daughter.last_img read more

23yearold found dead beside rail tracks

first_imgKolkata: A youth, identified as Gourab Ruidas (23) from Kumrokhali in Narendrapur, was found dead beside the rail track on Wednesday. His family members alleged that his friends had killed him. On Saturday, Gourab’s mother Namita lodged a complaint with the Baruipur GRP police station against three of his friends.According to sources, on Wednesday, at around 3:30 pm, Ruidas along with his three friends — identified as Surajit Das, Akash Pailan and Dinesh Ram — went to visit a fair in Bishnupur. But when he did not return till night, Ruidas’ family tried to search for him by calling their other family members. When his friends were asked, they could not tell them anything. Also Read – 3 injured, flight, train services hit as rains lash BengalLater on Thursday, the family members lodged a missing complaint with Narendrapur police station. In the afternoon, Narendrapur police station came to know about an unidentified body which was found beside the railway tracks near Mathurapur station. Officials from Narendrapur asked Namita to come to the police station. Later, they were accompanied by an official to the morgue at the NRS Medical College and Hospital where the body was identified. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedOn Saturday, Namita lodged a complaint with the Baruipur GRP police station. Sleuths have interrogated Das, Pailan and Ram and found their statements to be contradictory. Das stated that after they deboarded from the train, they consumed alcohol and later went to the fair. In the evening, Gourab’s mobile phone accidentally slipped off his hand and fell on the tracks. He got down from the train at next station and went to search for his phone. But sleuths are not convinced. Though no arrests have been made, the cops are waiting for the autopsy report.last_img read more