Explore further Jaafer Haidar and Jason Miller of Carbyn, whose mantra is “Go ahead. Just operate,” showed their creation, featuring a cross-platform experience, using both the Apple iPad and Blackberry Playbook in the Disrupt show demo. Smartphone functionalty is planned some time in the future.Carbyn enables consumers to get all the apps they enjoy in one destination, on any device, whether iPad, Blackberry Playbook, Android or others. For companies developing HTML5 applications, Carbyn is aiming to provide a wide-reaching distribution platform, according to Haidar, CEO and co-founder.你需要安装能够查看此内容的 Adobe Flash Player。Please click here to continue.As for apps, once you have Carbyn, you are able to pin any app to the main screen. You get a familiar-looking panel of available applications. Existing HTML5 apps are easily portable to the Carbyn system, in less than half an hour, according to Carbyn, and specialist apps can be created from scratch from a custom SDK.Features of Carbyn also include multitasking capabilities and app-to-app communications. In other words, applications can talk to one another.”We’re exposing an underlying file system messaging layer so that we have app to app communication. One app can tell, if it’s a phone app, let’s say, Skype can tell the music app, ‘hey, stop playing I’m getting a call,'” said Haidar.Also noted was how developers can port their HTML5 applications to Carbyn with litte effort. In fact, attracting developers was one of three goals that Haidar and Miller had in appearing at the show. Partnering with developers to tailor apps for Carbyn will be important to Carbyn’s growth. The second goal was getting the word out. “You don’t have to download anything, just go to the web site…we want to go nuts with this,” Haidar said in an interview at the show. The third was attracting money. Haidar said the team had been bootstrapping the startup since its founding and was now seeking funding. Citation: HTML5 OS is set to disrupt platform lock-in (2011, September 18) retrieved 18 August 2019 from https://phys.org/news/2011-09-html5-os-disrupt-platform-lock-in.html © 2011 PhysOrg.com www.carbyn.comtechcrunch.com/2011/09/15/carbyn/www.mobilemag.com/2011/09/13/c … rst-html-5-cloud-os/ More information: 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. (PhysOrg.com) — A Canada-based startup founded in November 2010 arrived at TechCrunch Disrupt last week to debut its “HTML5 operating system” called Carbyn. To get this system, there is nothing to install; you use your browser and you log in to Carbyn and you’re on your way. Beyond being an app, beyond being a web store, it is described by its founders as an operating system that happens to be app-focused. “It means you can get it on any device, they add, and “it means buying the cheapest tablet that gets you online so that you can get everything you want through your browser.” Apple’s App Store Downloads Top 1.5 Billion in First Year
Citation: Light detector system finds light pollution makes skies 20 times brighter in some areas (2016, October 19) retrieved 18 August 2019 from https://phys.org/news/2016-10-detector-pollution-brighter-areas.html Geographical distribution of the detectors of the Galician Night Sky Brightness Monitoring Network, located at 14 MeteoGalicia weather stations. Credit: Robert Simmon/NASA 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. City moths avoid the light (Phys.org)—A physicist in Spain has found that artificial light systems can make the skies above cities more than 20 times as bright as natural areas. Salvador Bará, with Universidade de Santiago de Compostela has written a paper detailing sky measurements made with a sensor network set up around the northwest portion of the Iberian Peninsula highlighting just how much brighter parts of the world have become at night and has uploaded it to the open access site Royal Society Open Science. Journal information: Royal Society Open Science Explore further The problem of light pollution is still so new that scientists still do not know the extent of the problems it may be causing, either for us humans or plants and animals. Eager to learn more about the amount of light pollution emitted around parts of his home country, Bará and associates put up 14 light detectors in automated weather stations around parts of the peninsula covering urban, rural and suburban areas. The detectors took readings once every minute, which were published automatically to a publicly available website. Bará defined two metrics using the data from the sensors—significant magnitude (for clear nights) and moonlight modulation factor (to account for the amount of light reflected from the moon back to Earth).In analyzing the data, Bará found that the night sky in urban areas was typically 14 to 23 times brighter than in a natural environment. He also found light levels seven to eight times brighter in periurban areas (those on the outskirts of urban areas) and 1.6 to 2.5 times brighter in transition regions (between urban and suburban areas and rural areas) and 0.8 to 1.6 times brighter in rural or mountainous areas. He noted that the presence of clouds had a strong impact on the amount of light in the sky reaching amplification factors as high as 25.He also notes that the night sky brightness typically attributed to moonlight was easily visible in rural and transition areas, but was barely noticeable in urban areas. He also points out that much of the artificial light that is generated encroaches on areas not meant to be lit, which represents not only waste, but possible problems for plants and animals attempting to exist at a distance. © 2016 Phys.org More information: Salvador Bará. Anthropogenic disruption of the night sky darkness in urban and rural areas, Royal Society Open Science (2016). DOI: 10.1098/rsos.160541AbstractThe growing emissions of artificial light to the atmosphere are producing, among other effects, a significant increase of the night sky brightness (NSB) above its expected natural values. A permanent sensor network has been deployed in Galicia (northwest of Iberian peninsula) to monitor the anthropogenic disruption of the night sky darkness in a countrywide area. The network is composed of 14 detectors integrated in automated weather stations of MeteoGalicia, the Galician public meteorological agency. Zenithal NSB readings are taken every minute and the results are openly available in real time for researchers, interested stakeholders and the public at large through a dedicated website. The measurements allow one to assess the extent of the loss of the natural night in urban, periurban, transition and dark rural sites, as well as its daily and monthly time courses. Two metrics are introduced here to characterize the disruption of the night darkness across the year: the significant magnitude (m1/3) and the moonlight modulation factor (γ). The significant magnitude shows that in clear and moonless nights the zenithal night sky in the analysed urban settings is typically 14–23 times brighter than expected from a nominal natural dark sky. This factor lies in the range 7–8 in periurban sites, 1.6–2.5 in transition regions and 0.8–1.6 in rural and mountain dark sky places. The presence of clouds in urban areas strongly enhances the amount of scattered light, easily reaching amplification factors in excess of 25, in comparison with the light scattered in the same places under clear sky conditions. The periodic NSB modulation due to the Moon, still clearly visible in transition and rural places, is barely notable at periurban locations and is practically lost at urban sites.
Citation: New laser technique improves neutron yield (2017, April 21) retrieved 18 August 2019 from https://phys.org/news/2017-04-laser-technique-neutron-yield.html © 2017 Phys.org (Phys.org)—A team of researchers from several institutions in China has developed a new way to produce neutrons that they claim improves on conventional methods by a factor of 100. In their paper published in the journal Physical Review Letters, the team describes the new method and the results they obtained when testing it. Small-scale nuclear fusion may be a new energy source More information: G. Ren et al. Neutron Generation by Laser-Driven Spherically Convergent Plasma Fusion, Physical Review Letters (2017). DOI: 10.1103/PhysRevLett.118.165001ABSTRACTWe investigate a new laser-driven spherically convergent plasma fusion scheme (SCPF) that can produce thermonuclear neutrons stably and efficiently. In the SCPF scheme, laser beams of nanosecond pulse duration and 1014–1015 W/cm2 intensity uniformly irradiate the fuel layer lined inside a spherical hohlraum. The fuel layer is ablated and heated to expand inwards. Eventually, the hot fuel plasmas converge, collide, merge, and stagnate at the central region, converting most of their kinetic energy to internal energy, forming a thermonuclear fusion fireball. With the assumptions of steady ablation and adiabatic expansion, we theoretically predict the neutron yield Yn to be related to the laser energy EL, the hohlraum radius Rh, and the pulse duration τ through a scaling law of Yn ∝ (EL/Rh1.2τ0.2)2.5. We have done experiments at the ShengGuangIII-prototype facility to demonstrate the principle of the SCPF scheme. Some important implications are discussed. 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. Neutrons are used for a variety of purposes, including academic pursuits and real-world applications such as underground mineral resource location. For that reason, scientists continue to look for new and better sources. Currently, in one approach, lasers are fired at hydrogen isotope clusters, which causes them to be ionized and to collide, resulting in fusion reactions that release neutrons. Unfortunately, this approach and others are not very efficient. In this new effort, the researchers have taken a new approach to using lasers to produce neutrons—applying the force from the inside rather than the outside.In the new method, a laser is used to heat a deuterium capsule, which fuses deuterium nuclei pairs, resulting in neutron emissions. The method is a form of inertial confinement fusion, but the instability inherent in other techniques has been improved by using what the team terms “spherically convergent plasma fusion.” In this method, the researchers used a spherical capsule covered with a thin layer of gold; the capsule had an inside coating of polystyrene containing an amount of deuterium. The researchers then cut tiny holes in the coating and fired lasers through them, allowing the beams to strike inside the capsule, instigating a fusion reaction and emittance of neutrons. The team used 2 ns 6.3 kJ laser pulses to test their method, and report that they were able to produce approximately 1 billion neutrons for each pulse, which they claim is approximately 100 times better than other methods.The team also suggest that if the target used were deuterium and tritium, it might be possible to boost output by a factor of 1000. They further suggest it might be possible to scale up their method to produce even greater amounts of the subatomic particles. Journal information: Physical Review Letters Explore further Credit: G. Ren/IAPCM and J. Yan/LFRC via Physics
Multiple gamma-ray emission regions detected in the blazar 3C 279 An international group of astronomers have carried out multi-wavelength observations of HESS J1943+213 and found evidence supporting the hypothesis that this gamma-ray source is an extreme blazar. The finding is reported in a paper published June 11 on the arXiv pre-print repository. Contour images of HESS J1943+213 with VLBA (a) 1.6 GHz, (b) 4.3 GHz, (c) 7.6 GHz, and (d) 15 GHz bands. Contour levels plotted above 1% of the peak image intensity: −1, 1, 2, 4, 8, 16, 32, 64 (1.6 GHz); −2, −1, 1, 2, 4, 8, 16, 32, 64 (4.3 GHz and 7.6 GHz); −8, 8, 16, 32, 64 (15 GHz). Negative levels are shown with dashed lines. Credit: Archer et al., 2018. Explore further © 2018 Phys.org Blazars are very compact quasars associated with supermassive black holes at the centers of active, giant elliptical galaxies. They belong to a larger group of active galaxies that host active galactic nuclei, and are the most numerous extragalactic gamma-ray sources. Their characteristic features are relativistic jets pointed almost exactly toward the Earth.BL Lacertae objects (BL Lacs) are a type of blazar showcasing lower power jets and higher Doppler factors than other blazars. Based on the location of the synchrotron peak, they can be divided into low (LBLs), intermediate (IBLs), and high synchrotron peak BL Lacs (HBLs). Astronomers are specially interested in finding rare extreme HBLs (EHBLs)—identified by synchrotron emission peaks at energies above 1 keV. Such objects are believed to be among the most efficient and extreme accelerators in the universe.Recently, a team of astronomers led by the Very Energetic Radiation Telescope Array System (VERITAS) collaboration, presented the results of observations indicating that one of the gamma-ray sources in the plane of the Milky Way galaxy, designated HESS J1943+213, is actually an EHBL.Discovered in 2011 by the H.E.S.S. Galactic Plane scan, HESS J1943+213 was initially classified as a very-high-energy gamma ray point source. Since its detection, the real nature of this source has been uncertain. Some astronomers suggested that it is a blazar, while other proposed that the source is a pulsar wind nebula or a gamma-ray binary. Now, new observations, conducted with the use of the VERITAS telescope array, the Very Long Baseline Array (VLBA), as well as NASA’s Swift and Fermi space telescopes, indicate that HESS J1943+213 is a blazar of EHBL subclass.”We detail results from observations of HESS J1943+213 with VERITAS, FermiLAT, Swift-XRT, and VLBA and further characterize the properties of the source as an EHBL,” the researchers wrote in the paper.According to the study, new observations show that HESS J1943+213 has an extended, jet-like structure as well as a remarkably stable flux and spectrum in very-high-energy gamma rays. Moreover, the researchers found that the radio spectral indices of the core and the jet, together with the level of polarization, are in a range typical for blazars.Taking into account the location of the synchrotron peak in HESS J1943+213, the blazar was classified as an EHBL. The astronomers noted that although high-energy gamma-ray blazars behind the galactic plane have been previously identified with the Fermi telescope, HESS J1943+213 is the first such blazar also seen in very-high-energy gamma-rays.In concluding remarks, the researchers emphasized that although the real nature of HESS J1943+213 seems to be understood, there are still many unknowns about this blazar.”High-sensitivity observations of HESS J1943+213 in the hard X-ray band with an instrument like NuSTAR would be valuable for characterizing both the spectral shape and the variability of the emission produced by the higher-energy particles and would help pinpoint the emission mechanism of the source. Moreover, a precise measurement of the distance to HESS J1943+213 would be of great benefit for pinning down its physical properties,” the paper reads. More information: HESS J1943+213: An Extreme Blazar Shining Through The Galactic Plane, arXiv:1806.04144 [astro-ph.HE] arxiv.org/abs/1806.04144AbstractHESS J1943+213 is a very-high-energy (VHE; >100 GeV) γ-ray source in the direction of the Galactic Plane. Studies exploring the classification of the source are converging towards its identification as an extreme synchrotron BL Lac object. Here we present 38 hours of VERITAS observations of HESS J1943+213 taken over two years. The source is detected with ∼20 standard deviations significance, showing a remarkably stable flux and spectrum in VHE γ-rays. Multi-frequency very-long-baseline array (VLBA) observations of the source confirm the extended, jet-like structure previously found in the 1.6 GHz band with European VLBI Network and detect this component in the 4.6 GHz and the 7.3 GHz bands. The radio spectral indices of the core and the jet and the level of polarization derived from the VLBA observations are in a range typical for blazars. Data from VERITAS, Fermi-LAT, Swift-XRT, FLWO 48′′ telescope, and archival infrared and hard X-ray observations are used to construct and model the spectral energy distribution (SED) of the source with a synchrotron-self-Compton model. The well-measured γ-ray peak of the SED with VERITAS and Fermi-LAT provides constraining upper limits on the source redshift. Possible contribution of secondary γ-rays from ultra-high-energy cosmic ray-initiated electromagnetic cascades to the γ-ray emission is explored, finding that only a segment of the VHE spectrum can be accommodated with this process. A variability search is performed across X-ray and γ-ray bands. No statistically significant flux or spectral variability is detected. Citation: HESS J1943+213 is an extreme blazar, study finds (2018, June 21) retrieved 18 August 2019 from https://phys.org/news/2018-06-hess-j1943213-extreme-blazar.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.
ARMED with a vision of publishing books for children, Sameena Shaikh opened her publishing house two months ago. She calls it Aisha after her daughter. Quite recently, the publishing house made a début with 21 New Beginnings, a compilation of true stories of ‘oddity, hope and change’ by Vivek Pandit. Why publishing and why children books particularly?While my two girls were growing up, I realised the vital role books play in the learning and nurturing of kids. Since then I have been possessed with the idea of a book series for children. Over years, the thought crystalised into a concept – colourful and vivid illustrations to trigger their imagination, small values that could inspire them to be sensitive souls and short stories that could improve their vocabulary and language skills – I finally found the courage to open my own publishing house. Also Read – ‘Playing Jojo was emotionally exhausting’How difficult is it being an indie publisher? May sound clichéd, but I strongly believe ‘where there is a will there is a way’. I never doubted my mission. All I started with were confidence and a creative concept, both have helped my vision blossom into reality. And I know nothing can stop an honest vision, so I never think of the diffculties, just take one step at a time. When it gets tough, I just wait patiently for the cloud to clear.How do you go about choosing your authors? Also Read – Leslie doing new comedy special with NetflixAny work that has depth, clarity, undercurrent of a message, positivity and humour would find space in my publishing house.What are your plans for the future?Innovation and creativity will be the USP of my publishing house. The first book has a new concept – short stories by a known author, plus stories of new writers, all inspired by true incidents (available in Flipkart). My second book would be the beginning of a series for children. Adventues of Donna The Dolphin will have beautiful illustrations and will be filled with the adventures of a Dolphin, which will introduce the children to a whole new world. The series will include a book for age group – 2+ , 5+ and 9+.
Not so much a part of the music scene? Prefer theatre insted? Here’s some great news for you. Sahitya Kala Parishad ,Department of Art, Culture and Languages under the Government of Delhi presents the Bhartendu Natya Utsav 2013. Starting 18 March, this theatre festival is spread over eight days at the Shri Ram Centre and will play host to eight plays over the span of the festival. Kicking off on 18 March, Monday – Laila Majnu is the first play scheduled to be staged. Over the next week plays like Also Read – ‘Playing Jojo was emotionally exhausting’ Ek Kutte Ki Kahaani, Chitralekhaa, Anaavrit, Uljhan, Kissa Maujpur Ka, Metamorphosis and Seventeen. Plays start from 6:30 pm everyday and entry for all is free.Sahitya Kala Parishad, the cultural wing of the Government of NCT of Delhi was setup in 1968 for the promotion and propagation of Art and Culture in Delhi. As one of the most interactive department of the Delhi Government, Sahitya Kala Parishad for the past three decades and more has been carrying out its mandate with full vigor and dedication. The Parishad has, on one hand, revived and projected the age old, time tested traditions of the country and on the other hand, it has tried to encourage and provide platform to the new and innovative trends in plastic and performing arts which represent our lives and times.DETAILVenue: Shri Ram Centre, 4 Safdar Hasmi Marg, Mandi HouseDate: 18 to 25 March
Pochampally Handloom Park has organised a four-days Pochampally Ikat Art Mela that started yesterday (13 July). The show displays a colourful range of apparel fabrics, stoles, scraves, silk and cotton sarees, duppatas, table mats, covers, cotton shirts and kurtis, hand bags and much more. The event was inaugurated by Dinesh Kumar, Divisional Commissioner (Handlooms), Ministry of Textile and the winner of beauty pegeant Indian Princess 2014, Chandni Sharma. Also Read – ‘Playing Jojo was emotionally exhausting’Kumar says, ‘Such a kind of a mela where weavers exhibit their creations enables the people to witness the blend of different style, textures and concepts all under one roof’. Ikat is a dyeing technique used to pattern textiles that employs a resist dyeing process on the warp fibres. In ikat, the resist is formed by binding bundles of threads with a tight wrapping applied in the desired pattern. The threads are then dyed. The bindings may then be altered and the thread bundles are dyed again with another colour to produce elaborate, multicolored patterns. When the dyeing is finished the bindings are removed and the threads are woven into cloth. Here the threads are dyed before weaving, and both faces are essentially identical in appearance.When: On till 16 JulyWhere: Agakhan hall , 6 Bhagwan Das RoadTiming:10 am to 9.00 pm