Posted: September 18, 2018 Sasha Foo, September 18, 2018 Sasha Foo Updated: 7:57 AM 00:00 00:00 spaceplay / pause qunload | stop ffullscreenshift + ←→slower / faster ↑↓volume mmute ←→seek . seek to previous 12… 6 seek to 10%, 20% … 60% XColor SettingsAaAaAaAaTextBackgroundOpacity SettingsTextOpaqueSemi-TransparentBackgroundSemi-TransparentOpaqueTransparentFont SettingsSize||TypeSerif MonospaceSerifSans Serif MonospaceSans SerifCasualCursiveSmallCapsResetSave SettingsSAN DIEGO (KUSI) – San Diego’s City Council approved $8.4 million in new funding for the three homeless bridge shelters. Close to 700 men, women and children have been sheltered in the large industrial tents for the last nine months.Acting as the Housing Authority, the city council agreed Tuesday to terms of a 9 month contract extension with Alpha Project, Father Joe’s Villages, and Veterans Village. There are two big changes in the new contract. Spending increased by nearly $1 million in the new contract to pay for 14 additional full time positions. In recommendations from a third party evaluator called Focus Strategies, the evaluator said more case managers and housing specialists could help people make a faster transition from the tents to stable, more permanent housing.The contract also includes a revised goal for those who are in need of more permanent housing. In the previous contract, the target was to move 65% of shelter occupants into housing. The new agreement knocks that goal down to 30% which the evaluator considered more realistic. Mayor Kevin Faulconer conceded that the city does not have enough low cost housing, but he said the city has been successful in helping more than 330 people find housing since the tents opened. City approves extended contract for homeless bridge shelters Categories: Local San Diego News FacebookTwitter
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Sci-Tech Tags 19 Comments NASA scopes out Antarctica’s ice (photos) 15 Photos Share your voice Antarctica’s ice sheets are in trouble. Mlenny/Getty What can we do to stop Antarctica’s ice sheets from disintegrating and causing a huge rise in global sea levels? A trio of scientists have simulated a radical geoengineering project to dump 7.4 trillion tons of snow on Antarctica, suggesting it could stop runaway instability in the glaciers.Recent studies have shown warmer ocean water is being pushed toward the colossal West Antarctic ice sheet, destabilizing it and speeding up the decline of its huge glaciers. The threat of these huge ice deposits falling into the ocean is immense and the overall effect of their decline has been calculated to eventually raise sea levels by approximately 10 feet (3 meters) or more, endangering cities like New York.”The real concern is that many of these glaciers have a reverse bed slope, meaning that as they retreat it exposes deeper and thicker ice to the ocean,” explains Sue Cook, a glaciologist at the University of Tasmania. “That is a very unstable position, and causes a positive feedback effect which accelerates the retreat (and hence contribution to sea level rise).”The new study, published in the journal Science Advances on July 17, proposes a drastic, decades-long geoengineering project that would pump huge amounts of ocean water to the ice sheet, adding 7,400 gigatons (7.4 trillion tons) of “artificial snowfall” and reversing the decline. Simulating the current effects on Antarctica’s ice sheets and the changes they experience with increasing snowfall, the researchers were able to map out a process that could potentially halt the ice loss.The problem? Their suggestion would be an incredibly expensive undertaking and include immense technical challenges. The authors say it would present an “unprecedented effort for humankind.”Mostly, the problem lies in pumping the water out of the ocean, which requires an enormous amount of energy. The study suggests constructing a series of 12,000 wind turbines to enable this process to take place and then pumping artificial snow into two glaciers on the West Antarctic coast. The team suggest that activity would result in a 2 to 5 centimeter drop in sea level but the added weight of artificial snow falling on the surface would shore up the glaciers, improving their stability.And the larger effects of such a scheme are yet to be ironed out. What are the lasting effects on the Antarctic ecosystem and what kind of knock-on effects would we see in ocean currents across the world? We just don’t have answers to those questions right now.What we do know is the Earth’s current default state: Burning fossil fuels and pumping tons of carbon into the atmosphere, warming the planet and causing sweeping changes like threatening a million species with extinction or, you know, the ice sheets melting. Considering the possibility of salvation in artificial Antarctic snow might be jumping a little far ahead.”Even if a geoengineering project such as this were possible, it certainly shouldn’t detract from the other urgent action which is required to reduce greenhouse gas emissions,” Cook notes.
Hyundai introduced a new GL variant for its Fluidic Verna sedan in India with a price tag starting at 7.17 lakh.The new GL variant comes in both petrol and diesel engine options. While the GL petrol is priced at 7.17 lakh, the diesel variant comes at a price tag of 8.35 lakh.The petrol GL variant is powered by a 1.4-litre VTVT engine, which can churn out a power of 105bhp and peak torque of 138Nm and the diesel model comes with 1.4-litre CRDI motor.The diesel engine of the car is expected to generate 89bhp of power and 224Nm of torque. The new Verna GL variant come with features like keyless entry, 2-Din Audio system, electrically adjustable outside rear view mirror, electric power-steering with tilt function and manual air conditioner among others. However, the GL variant missed out the safety features like ABS.Beside the introduction of the new GL variant in the sedan line up, the South Korean auto major Hyundai discontinued six variants of the Verna – 3 petrol and 3 diesels. The automatic variants of the Verna SX (O) and EX which are powered by the 1.6-litre VTVT engine have been discontinued in the domestic market along with the 1.6 CRDI Automatic and the 1.4-litre CRDI EX variant. The Verna’s base petrol and diesel variant have been replaced with the new GL variant.Hyundai Verna, a sedan which has been earning good sales record in the domestic market since its launch, witnessed a fall recently after the grand debut of Honda City. Now with the introduction of the new Verna variant, Hyundai hopes to regain its top position in the Indian auto market.In February, Hyundai Motor India Ltd witnessed a plunge in sales. The company had reported a 14.9 percent decline in total sales in February at 46,505 units compared with 54,665 in the same month last year.
The central government is currently considering a proposal to capping free cash withdrawals in ATM to just three, from the previous 8-10. This includes withdrawals from banks, where one already has a bank account. The latest move comes to support cashless economy. The proposal was put forth by bankers and was discussed with Finance Minister Arun Jaitley in pre-budget consultations. “A proposal to bring down free ATM transactions to three per month has been discussed with the finance ministry, and this is one of the measures being considered to disincentives use of cash,” a senior banker was quoted as saying by the Economic Times. Also read: RBI removes restrictions on withdrawalsAnother banker quoted by the publication said that the decision (of waiving off transaction charges) was taken when things were different (post demonetisation), but things have changed now and we need to change with that. “If only three free transactions are allowed, then people will be inclined to shift to digital transactions,” he added. According to the report, banks presently permit customers five free ATM transactions every month, after which, they charge Rs 20 per transaction. It includes service tax. However, for non-customers, lender banks offer up to three free transactions in six metro cities (Delhi, Mumbai, Chennai, Kolkata, Bengaluru and Hyderabad). The rules were established in November 2014.Banks had earlier said that since November, ATM transactions reduced by 10-20 percent. “If the number of transactions on ATMs comes down, then we will have to figure out a strategy to discourage cash. One can look at increasing transaction charges at ATMs to improve the economics of doing business, but the government wants to reduce transaction cost for customers, so that may not happen,” the person quoted above added.
Explore further (PhysOrg.com) — By greatly amplifying one photon from an entangled photon pair, physicists have theoretically shown that human eyes can be used as detectors to observe quantum effects. Usually, detecting quantum phenomena requires sensitive photon detectors or similar technology, keeping the quantum world far removed from our everyday experience. By showing that it’s possible to perform quantum optics experiments with human eyes as detectors, the physicists can bring quantum phenomena closer to the macroscopic level and to everyday life. The group of physicists is from the University of Geneva, and includes Pavel Sekatski, Nicolas Brunner (also from the University of Bristol), Cyril Branciard, Nicolas Gisin, and Christoph Simon. In their study published in a recent issue of Physical Review Letters, the scientists theoretically show how human eyes can be used to detect a large Bell inequality violation, which proves the existence of quantum entanglement.As the physicists explain, the key to achieving human-eye detection of quantum effects is to use the process of quantum cloning by stimulated emission. Recently, using quantum cloning, researchers in Rome have experimentally created tens of thousands of clones starting from a single-photon. Then, by amplifying one photon of an entangled pair, the researchers managed to demonstrate entanglement. In order to do this, specific detectors are required, which can distinguish two orthogonal amplified states with a high success rate. Now, what Sekatski and co-workers have shown is that the human eye performs extremely well at the task of distinguishing between orthogonal amplified states. This is a consequence of the eye’s main characteristic, namely as a detection threshold. Below a certain threshold number of incoming photons, the eye remains blind (no light is seen), whereas above the threshold the efficiency (i.e. the probability of seeing) is close to one. In their calculations, the authors also considered the influence of experimental imperfections, such as photon losses, which are inevitable in a real experiment. They found that the setup is surprisingly robust. A strong Bell violation can be obtained even in case of high losses, demonstrating the presence of entanglement. This is a very astonishing feature since entanglement is generally an extremely fragile property, highly sensitive to experimental imperfections such as losses. To solve this apparent paradox, the scientists uncovered a loophole in the system. They showed that a specific multi-photon state could actually behave exactly as the entangled state. Therefore, the high Bell violation actually witnesses the entanglement of the original photon pair, i.e. before the amplification occurs, but not the entanglement between the amplified state and the single photon. Still, the authors show that the amplified state and the single photon are nevertheless entangled, but revealing this entanglement would require more sophisticated measurements. This subtle issue provides a much better understanding of the quantum nature of amplified states, which were recently the subject of a controversy among the scientific community.As the researchers finally note, using human eyes as detectors in actual quantum experiments will face significant technical challenges. However, the possibility of observing quantum effects directly with our own eyes is fascinating. Naked eye observation would bring the observer one step closer to the quantum world.“From our theoretical study, the experimental perspectives appear very promising,” Brunner told PhysOrg.com. He added that, although there will be many technical challenges, Nicolas Gisin’s research group in Geneva has already started working on experiments.More information: Pavel Sekatski, Nicolas Brunner, Cyril Branciard, Nicolas Gisin, and Christoph Simon. “Towards Quantum Experiments with Human Eyes as Detectors Based on Cloning via Stimulated Emission.” Physical Review Letters 103, 113601 (2009).Copyright 2009 PhysOrg.com. All rights reserved. This material may not be published, broadcast, rewritten or redistributed in whole or part without the express written permission of 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. How human eyes could detect quantum entanglement: A single-photon qubit is amplified through cloning via stimulated emission in a nonlinear crystal (red box). The clones are split into two orthogonal polarization modes, with the polarization basis varied with the help of a wave plate (green box). Each mode is then detected by a naked human eye. Image credit: Pavel Sekatski, et al. Entanglement Swapping: A New Quantum Trick Citation: Physicists Explain How Human Eyes Can Detect Quantum Effects (2009, September 29) retrieved 18 August 2019 from https://phys.org/news/2009-09-physicists-human-eyes-quantum-effects.html