Month: August 2019

Epaper unplugged is key draw at Japan show

first_img It is what it is, or rather, what AU Optonics calls it, the Unplugged Flexible E-paper Display. This six-inch-reader is made up of Rollable Organic TFT (thin film transistor) E-paper with a flexible photovoltaic battery attached to the e-paper. The-reader has 800 by 600-pixel resolution.That combination of e-paper with PV battery was the attraction, and some say it could signify the future in e-readers. Talk about a marketer’s dream—if and when the device hits the stores as an e-reader, the device can sell on its flexible paper and efficiency parts that will not damage easily. Users can drop them in their briefcase or pouches without having to worry. The company says another plus is that the reader’s optimized charging circuit design delivers power savings. The PV battery measures 132 x 212 x 0.3mm and weighs 10g. Solar light generates 1W or more of electricity. A strong light from a lamp is directed at the PV battery. A rechargeable battery is placed under the stand. While the device is self-powered when used in sunlight, the photovoltaics cannot draw enough energy out of indoor lighting.That is why there is an external rechargeable battery, so that the user can run the device indoors. AUO has all along been at the forefront in Taiwan in e-paper developments. In 2009, AUO unveiled an e-book reader that carried features which at the time were noteworthy: a low-power electronic paper and a touch panel.The prototype was also six inches and also housed 800×600 pixels like the new display at the FPD show. The company makes and markets thin film transistor-liquid crystal displays (TFT-LCDs) and plasma display panels (PDPs). AUO sells its products in domestic markets and also exports worldwide.AUO at this year’s show carried a list of the company’s key achievements in display technologies. These include its 65″ Extreme-PR 3D Gesture display panel, 46″ Scanning Retarder 3D display panel, 65″ Transparent display panel, 46″ Super Narrow Bezel panel, 6″ Flexible displays, its smartphone display panels with high resolution and low energy consumption, and an AMOLED line of display technologies and applications. © 2011 PhysOrg.com Explore further More information: Press release Citation: E-paper unplugged is key draw at Japan show (2011, November 1) retrieved 18 August 2019 from https://phys.org/news/2011-11-e-paper-unplugged-key-japan.htmlcenter_img (PhysOrg.com) — Yet another flexible e-paper display? No. Something special. This concept e-reader has no ho-hum signs of boring repetition. The concept e-reader was shown at last month’s FPD International in Japan, the big event focused on flat panel displays, which took place from October 26 to October 28. In fact, it was a top attraction. The new device from Taiwan-based AU Optronics (AUO) does not need an external power supply. Sony unveils 3D and color e-paper displays at this week’s SID 2011 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

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Researchers develop metamaterials able to control spread of light

first_imgThermal radiation modes emitted by spin-optical metamaterial based on inversion asymmetric kagome lattice. The illuminated color spirals symbolize the photon helicity-split due to optical Rashba effect. False-colored electric field distribution near the metasurface obtained by numerical simulation. The design of photonic metasurface symmetries via geometric gradient of the optical antenna patterns provides a route to control light-matter interaction at the nanoscale. Credit: Technion-Israel Institute of Technology (Phys.org) —A team of researchers at Technion-Israel Institute of Technology has developed a new class of metamaterials that allow for control of the spread of light in communications devices. As the team explains in their paper published in the journal Science, the new materials are able to alter the standard characteristics of light waves. © 2013 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. Novel material shows its credentials to facilitate integration of photonic, electronic components in practical device Explore further Because of their unique properties, the new metamaterials are expected to help engineers design and develop communications devices that are more streamlined due to an ability to control the spread of electromagnetic waves—they set the stage for devices that are able to manipulate light at the nanoscale. Such devices are also expected to result in simpler interface connections with other electronic components. The end result would be smaller devices that are easier to use and that work well with other electronic equipment.The new materials were inspired by metallic nanoantennae found in nature, the team reports.center_img Journal information: Science More information: Spin-Optical Metamaterial Route to Spin-Controlled Photonics, Science 10 May 2013: Vol. 340 no. 6133 pp. 724-726 DOI: 10.1126/science.1234892ABSTRACTSpin optics provides a route to control light, whereby the photon helicity (spin angular momentum) degeneracy is removed due to a geometric gradient onto a metasurface. The alliance of spin optics and metamaterials offers the dispersion engineering of a structured matter in a polarization helicity–dependent manner. We show that polarization-controlled optical modes of metamaterials arise where the spatial inversion symmetry is violated. The emerged spin-split dispersion of spontaneous emission originates from the spin-orbit interaction of light, generating a selection rule based on symmetry restrictions in a spin-optical metamaterial. The inversion asymmetric metasurface is obtained via anisotropic optical antenna patterns. This type of metamaterial provides a route for spin-controlled nanophotonic applications based on the design of the metasurface symmetry properties. Current electronic components used in communications technology are considered by most in the field to be bulky compared to other types of equipment. Also, engineers find it difficult to integrate such devices with typical microelectronic circuitry. For that reason, scientists have been looking for ways to change the way such devices are designed and built. In this new effort, the team from Israel has created a class of metamaterials that control the way light spreads, paving the way for entirely new types of communications devices.The new metamaterials developed by the team are based on spin optics where photon helicity degeneracy is prevented due to the geometric gradient that exists on their surface. They are also anisotropic—they don’t behave the same way when measured from different directions. Also, unlike current technology, they are polarization-dependent. Together these features cause light waves to propagate in ways not typically seen in current communications equipment. In addition, because of their polarization dependence, design engineers can create new devices that allow for a novel way to control communication devices—by the selection of the polarization of light at the outset. The researchers also report the new materials don’t show inversion symmetry on their surface. Citation: Researchers develop metamaterials able to control spread of light (2013, May 10) retrieved 18 August 2019 from https://phys.org/news/2013-05-metamaterials.html Thermal radiation modes emitted by spin-optical metamaterial based on inversion asymmetric kagome lattice. The illuminated color spirals symbolize the photon helicity-split due to optical Rashba effect. False-colored electric field distribution near the metasurface obtained by numerical simulation. The design of photonic metasurface symmetries via geometric gradient of the optical antenna patterns provides a route to control light-matter interaction at the nanoscale. Credit: Technion-Israel Institute of Technologylast_img read more

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Physicists use magnetism simulation software to model US presidential elections

first_imgConnected by commuters. This map shows connections between home and work counties for the most common connections (top 10%), according to census data. Researchers used these data as part of a simulation of voting behavior in US presidential elections. Credit: J. Fernández-Gracia et al., Phys. Rev. Lett. (2014) PausePlay% buffered00:0000:00UnmuteMuteDisable captionsEnable captionsSettingsCaptionsDisabledQuality0SpeedNormalCaptionsGo back to previous menuQualityGo back to previous menuSpeedGo back to previous menu0.5×0.75×Normal1.25×1.5×1.75×2×Exit fullscreenEnter fullscreen (Phys.org) —A team of physicists working at IFISC in Palma de Mallorca, Spain has used a computer simulation originally designed to model the transition of iron between magnetized states to create a model to do something similar for voting patterns in the United States. In their paper published in Physical Review Letters, the team describes how they used factors of influence by interactions between voters to create a model that accurately predicted how influenced voters would vote. Creating a computer model that can accurately predict the outcome (the winner and loser) of an election is still just a pipe dream, of course. What is possible though is modeling human behavior as it relates to voter patterns. One such behavior is the tendency of voters to be impacted by the opinions of others, whether those of people that live near them, or those that commute to places where they work. It’s this tendency that the team in Spain has tried to model.To model voter tendencies on a computer the researchers narrowed down the factors of influence that lead to voting tendencies to just two: the proportion of Republicans versus Democrats in a given voter’s home county and the proportion of Republicans versus Democrats where they work. This (and probability and statistics) allowed for modeling the impact of influence in a variety of situations. One example would be where a voter is Democrat but lives or works among Republicans, a situation that can in many cases cause them to vote Republican. The model allowed for increasing or decreasing the distance between such voters to allow for an increase or dissipation of influence impacting possible voting trends. Play 36 years of simulated US presidential election maps have some statistical properties that remain constant in time and are similar to the real election results. (Counties that voted for the Democrat are blue; those for the Republican are red. The intensity of the color indicates the margin of victory.) Credit: J. Fernández-Gracia/IFISC/ Physics Focus Instead of trying to predict who would win a given election, the model alternatively shows trends by focusing on margin of victory—by noting voter trends across varying regions—with visual representations of changes in voting behavior as distance between impact factors change. To find out if their model was accurate, the team input census data from the nine presidential elections covering the years 1980 to 2012. Doing so revealed previously unknown correlations between regions that actually existed in the real world of vote casting and graphically illustrated the influence that voters have on one another. One striking example was the county to county variability displayed, indicating the percentage of votes going to either party—showing that the national mean changes from election to election, but not the degree of fluctuation between counties. Explore further Swing voters hold more sway over candidates on economic issuescenter_img 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: Physicists use magnetism simulation software to model US presidential elections (2014, April 24) retrieved 18 August 2019 from https://phys.org/news/2014-04-physicists-magnetism-simulation-software-presidential.html © 2014 Phys.org Journal information: Physical Review Letters More information: Is the Voter Model a Model for Voters? Phys. Rev. Lett. 112, 158701 – Published 18 April 2014. journals.aps.org/prl/abstract/ … ysRevLett.112.158701ABSTRACTThe voter model has been studied extensively as a paradigmatic opinion dynamics model. However, its ability to model real opinion dynamics has not been addressed. We introduce a noisy voter model (accounting for social influence) with recurrent mobility of agents (as a proxy for social context), where the spatial and population diversity are taken as inputs to the model. We show that the dynamics can be described as a noisy diffusive process that contains the proper anisotropic coupling topology given by population and mobility heterogeneity. The model captures statistical features of U.S. presidential elections as the stationary vote-share fluctuations across counties and the long-range spatial correlations that decay logarithmically with the distance. Furthermore, it recovers the behavior of these properties when the geographical space is coarse grained at different scales—from the county level through congressional districts, and up to states. Finally, we analyze the role of the mobility range and the randomness in decision making, which are consistent with the empirical observations.last_img read more

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Violence Follows ProIndependence Protests In

first_img Beawiharta by NPR News Ashley Westerman 8.28.19 1:01pm Pro-independence protests in Indonesia’s restive Papua and West Papua provinces have resulted in violence for a second week, according to activists and reports from the area, where most Internet access has been shut down since Aug. 21.Conflicting reports of deaths, injuries and arrests have emerged from the region. On Wednesday, police said two protesters and one police officer had been killed after shooting broke out during a demonstration in the easternmost province of Papua. A pro-independence spokesperson in the province, Victor Yeimo, told NPR that six protesters were shot dead by police during Wednesday’s demonstration. Speaking by phone from Jayapura, the capital of Papua province, Yeimo said the number of injured was unconfirmed.A police spokesman in Jakarta told the Associated Press that one soldier and five police officers were injured in Wednesday’s protest.Wednesday’s violence follows days of similar turmoil that saw one demonstrator killed last Friday and others injured and detained over the weekend. Police confirmed the protester’s death but denied that any others were injured that day.”It’s not going to stop”The current tensions erupted after the government on Aug. 17 detained dozens of Papuan university students in East Java for allegedly holding a pro-independence rally.Two days later, in response to the students’ arrests and reports that nationalist groups had verbally abused them — allegedly calling them “pigs” and “monkeys” — protesters took the streets across the country. In West Papua, some torched a parliament building, prompting the Indonesian government to send over 1,000 troops and hundreds of police to an already heavily militarized area.Last Wednesday, Indonesia’s government shut down cellular and cable-based Internet in Papua and West Papua, two of Indonesia’s most resource-rich but least-developed provinces. They share an island with the country of Papua New Guinea and have a combined population of some 3.5 million.Rights activists say the Internet shutdown is a new tactic to quell pro-independence unrest, which has roiled the region for decades.Indonesian President Joko Widodo called the shutdown “a matter of national security,” but human rights groups both in and outside Indonesia have criticized the move, accusing authorities of trying to cover up abuses against protesters.Journalists and activists tell NPR that a few private WiFi networks and the landline Internet in some government buildings and hotels remain functional. Information that has come out in recent days shows that the protests have grown in size and scope.Indonesian freelance journalist Febriana Firdaus, based in Jakarta, says the demonstrations have swept from the Papua region’s coastal areas into the highlands.”It’s not going to stop,” she says. “I think it’s getting bigger and bigger and bigger.””West Papuan people think there is no hope”Yeimo, the international spokesperson for the West Papua National Committee, an arm of the region’s pro-independence campaign, tells NPR that the mood of demonstrators is “anger.” Separatists want a referendum on Papuan independence from what they call Indonesian “occupation,” a goal they’ve supported since the Netherlands relinquished the region to Indonesia in 1962.Indigenous Papuans are ethnically distinct from many other Indonesians and often experience discrimination, Yeimo says. In “every sector of life in West Papua, there is racism,” he says. Since the region became part of Indonesia, people from other parts of the country have migrated in and have come to dominate the provincial economy, Yeimo says.Starting 50 years ago with the Act of Free Choice, which made the Papua region a territory of Indonesia, rights activists say decades of on-and-off violence between government forces and supporters of the umbrella independence campaign known as the Free Papua Movement, which includes Yeimo’s group, has killed and displaced thousands of Papuans.Earlier this month, the Pacific Islands Forum, an intergovernmental organization of Pacific nations, noted “the reported escalation in violence and continued allegations of human rights abuses” in the Papua region and urged peaceful resolution of the conflict, an issue that has been on the forum agenda since 2000.”I think that West Papuan people think there is no hope in Indonesia because many West Papuan[s] have been killed, arrested and have no freedom of expression,” says journalist Victor Mambor, who grew up in West Papua and is the senior editor the province’s Jubi Daily. Human rights groups over the years have documented multiple incidents of suppression of freedom of speech, unlawful killings, rape and torture by government security forces — leading some observers and experts to accuse the Indonesian government of running a police state in the region.A new solution to an old problem?While Indonesia has previously limited access to certain social media and messaging apps, the government’s Internet shutdown in the Papua region is unprecedented, activists say. “The government says they are doing it to prevent hoaxes,” says Damar Juniarto, executive director of SAFENET Voice, an Indonesian nonprofit that focuses on digital rights in Southeast Asia. But ordinary Papuans are the ones getting hurt, he says.”It is impacting not only freedom of expression. It’s also affecting the economy … access to public services, and aspects of education where students cannot use the Internet,” he says.”Given the track record of the Indonesian state security forces against the West Papuan people, this is a very emergency situation,” says Veronica Koman, a Jakarta-based human rights lawyer who works on West Papua issues. “However, it has a different tone of sense of urgency because West Papua has no press freedom and heavy presence of security forces.”The 2019 World Press Freedom Index notes Indonesia’s “serious media freedom violations, including drastic restrictions on media access in West Papua” and growing violence towards local journalists.Koman has co-written an urgent appeal to the U.N. Special Rapporteur on Freedom of Expression, claiming that the Internet shutdown in Papua and West Papua is illegal.”It definitely has breached international law,” Koman says. “It also violates Indonesian constitution because under our constitution, we citizens have the right to access information and also freedom of expression and it has violated not just West Papuans’ rights but even Indonesian people outside West Papua.”Indonesia follows in the footsteps of other Asian countries, India and Myanmar, in blockading the Internet in restive areas under their control. India-controlled Kashmir has not had Internet for over three weeks, since India revoked the contested region’s special status on Aug. 5. In Myanmar, Internet service has been shut down in that country’s restive Rakhine State for over two months, amid tensions between the military and a Buddhist insurgency.Copyright 2019 NPR. To see more, visit NPR. Violence Follows Pro-Independence Protests In Indonesia… last_img read more

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A slice of Bengal in Dilli Haat

With Durga Puja around the corner, Bengal is the flavour at Dilli Haat. What better reason for shopaholics to pick up handicrafts and exquisite saris from the state which is known for saris? A total of 32 self-help groups from various districts of West Bengal have taken over Dilli Haat. They are a part of a West Bengal government organised initiative which is being organised at Dilli Haat.  ‘This has been organised so that Bengalis in Delhi can do their puja shopping. It is also an opportunity for artisans from West Bengal to showcase their wares,’ said a West Bengal government official. Apart from 10 stalls each for handlooms and handicrafts, there are two stalls for jute products and a food court that is selling delicious snacks like cutlet, luchi alur dom, mishti doi among others.  Members of the Savitri self help group has travelled all the way from North 24 Parganas with jute shoes, bags and jewellery. ‘We have already finished most of our stock and more will be coming soon. Business has been good over the weekend,’ says a happy member. Others have travelled with kantha stitch saris, kurtas, dupattas and stoles. These are in fabrics like cotton, tussar, silk and georgette and have beautiful kantha work done on them. The renowned Dhaniakhali taant saris are there too. One stall we liked had leather products from Santiniketan. There were pretty coin purses, moneysaver pouches, sling bags, folders and others. Go take a look.DETAILAt: Dilli Haat, INAOn Till: 30 September read more

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and step two

first_imgYou remember them for Laila and the Channel V Launchpad and then well frankly you would not have heard too much about them except a few concerts here and there. But then these guys are all set to change that! The band is about to launch their next studio album Phir Se. Armed with their signature hooklines and brand of ‘confused pop’, these guys are raring to go with a six-city tour that includes Mumbai, Kolkata, Hyderabad, Bangalore, Pune and of course – Delhi.  Also Read – ‘Playing Jojo was emotionally exhausting’Phir se is an Electronic album produced through Rock N Roll sounds with as the band members say, ‘nostalgic ideas of the future’. With this album, Faridkot for the first time features five guest artists namely, Aditi Singh Sharma (Vocal Duet on Gulz), Suhail Yusuf Khan (Saarangi solo on Aaina), Gyan Singh (Tabla on Jats), Subadhra Kamath and Sonam Gaychen Wangdi (Background vocals).  The album was mixed in LA, California and mastered at the coveted Mastering Palace in New York, USA. Also Read – Leslie doing new comedy special with NetflixThe album features ten tracks that sway between the many emotions: From introspection in Aaina, realisation of the energy source that makes us who we are in- Bijli, to love for the natural and cosmic beauty around us captured in Gul and Suno, Phir Se encapsulates many shades of wonder.The basic idea behind the second  album is to evoke a variable take on trance – in musicality. Faridkot seeks to create a sort of repeating and evolving musical trance with their songs, similar to electronic music.  Except that the album is made of organic elements such as vocal harmonies, guitars and drums. ‘All of these elements and ideas were combined to make songs with inherent pop structures which we love. We love pop-music because it doesn’t reflect a type of music or a particular sound. It reflects the timeline of the society we live in. Everything is verse/chorus/bridge like all pop-music, except we wanted to make it a little interesting this time around’, says IP Singh, vocalist Faridkot.Do not miss this one. And this article works best because we are reminding you today! Head over.last_img read more

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Ode to the mountains

first_imgThe Beckoning of Gyanganj a fiction written by Chandan K Pathak has been released in the capital. The event took place at the India habitat Centre in the presence of many eminent personalities. Film actor Adil Hussain graced the occasion as the chief guest. Anamika Yaduvanshi- Life Coach and Motivational speaker and president of Astitva Foundation, John Uche Jesus- Nigeria born Indian Fashion designer and CEO of Diamond Ark, Avininder Singh- hospitality professional and Asst. Prof. Manjeet  Baruah- North East Studies from JNU were among others who attended the programme.  Also Read – ‘Playing Jojo was emotionally exhausting’Gyanganj is a mystical abode of immortal beings located in the remote Himalayas. It influences series of events from two eras and results in The Beckoning of Gyanganj, a cocktail of Himalayan adventures, spiritualism, love and romance, hatred and politics, sufferings and revolt. Having travelled to the Himalayas number of times in search of elusive true-saints and at times even contemplating to retire to a cave there to meditate for the rest of his life to attain spiritual knowledge, there was a phase of Chandan K Pathak’s life when he juggled with the materialistic and spiritual influences with lots of challenges. Through this book, he has tried to weave his own story encompassing all aspects of love, romance, spiritualism and politics. The Beckoning of Gyanganj is his second book. His first effort Footprints was a collection of short stories which were earlier in form of blogs. Pathak is currently working on his third novel (untitled) which is loosely based on a real life story from 1980s.last_img read more

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Notification out on 25 DA hike

first_imgKolkata: The notification declaring a total additional dearness allowance (DA) of 25 percent has been issued on Thursday. There will also be an ad-hoc increase in the existing daily rate of wages by Rs 53 from January 1 in 2019.The memorandum stated that “state government employees drawing basic pay up to Rs 80,000 per month, shall draw with effect from January 1, 2019 DA at 125 percent by taking into account the existing DA at 100 percent…” It has also been stated that “there will be a further ad-hoc increase in the existing daily rate of wages by Rs 53, with effect from January 1, 2019, for the daily wage workers under the government, whose wages are not regulated by any statutory provision like the Minimum wages Act.” Also Read – Heavy rain hits traffic, flightsIn connection with the DA, it has been stated that it will be applicable for teachers and non-teaching employees of government-aided educational institutions, employees of statutory bodies, government undertakings, Panchayats including Panchayat Karmee and Municipal Corporations, Municipalities and local bodies. It may be recalled that on June 19, Chief Minister Mamata Banerjee had announced the release of additional DA for the state government employees, with the merger of 10 percent interim relief and it was 90 percent more than that of the Left Front government. She had said: “We are now announcing additional DA, despite there being financial constraints. But the decision to release the DA has been taken as I had given my word to the employees.”last_img read more

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Fun and frolic

first_imgThe little kids moved about, some working on their drawings, some concentrating on winning the games and some wailing out loud and rolling on the floor to get their demands fulfilled in an event which saw the amalgamation of education and entertainment. Meenakshi Lekhi, Member of Parliament, inaugurated the two-day event Jack n Jill, the fun expo for children, which was held in the national Capital on Saturday and Sunday. Along with games, there were activities and competitions which kept the little ones busy. Also Read – ‘Playing Jojo was emotionally exhausting’With the new generation spending their time with latest gadgets and hoping for instant gratification in terms of entertainment these days, it has become necessary to introduce the children to the activities which fuse education within entertainment. Giving a modern twist to traditional fun and frolic, the event was a success, as large number of children walked-in and indulged in various activities like games, fashion show, dance, fancy dress competition, magic show and rakhi-making competition. Also Read – Leslie doing new comedy special with NetflixA nine-year-old child Gurmay Singh Malwai said, “I enjoyed the competition where the participant had to match elements to their state and those who got all elements correctly matched were winners. I am sad that I couldn’t get all elements matched but it was fun.”Jyoti Mayal, organiser and CEO of Redhat Communications said, “It has been a fun filled first edition of the expo with children between the age of 0-10 years enjoying a number of activities to the hilt. We are delighted to see such a great response from both children and their parents. It was also fascinating to see so many young and inquisitive minds and connect with them under one roof. The entire venue has been brimming with positive energy and we are certain that the next edition will be a bigger success, where we will be able to inculcate tourism, wellness and education from the formative years in school.” Parents too were busy buying toys and clothes while their children participated in the activities. A grandparent was observing her elder grandchild participate in an activity. When asked about her experience of the event, the 62-year-old Poonam said, “Bacche khush toh hum khush (if the kids are happy we are happy).”last_img read more

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Bollywood has to be more adventurous Ketan Mehta

first_imgDirector Ketan Mehta feels Bollywood should attempt making adventurous films. “There are all kind of filmmakers and all kind of reasons of a making a film. The Hindi film industry has to be more adventurous and make all kind of films. I start working on a script first and then think who should be cast,” Mehta told a media person. Mehta is looking forward to the release of Manjhi – The Mountain Man, an upcoming biographical film based on the life of Dashrath Manjhi. A poor labourer from a village in Bihar, he spent 22 years carving a path through a mountain. Mehta is happy with the response he is getting for the film, which will hit the screens on August 21. “The moment the trailer was released it was heartening to see an amazing response. It was surprising to see an overwhelming response from the youth. They identified with the spirit of the man,” the filmmaker said.last_img read more

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