Caltech Scientists Improve Computer Graphics with Quantum Mechanics

first_imgScience and Technology Caltech Scientists Improve Computer Graphics with Quantum Mechanics By ROBERT PERKINS Published on Wednesday, July 27, 2016 | 11:23 am Your email address will not be published. Required fields are marked * Community News Pasadena’s ‘626 Day’ Aims to Celebrate City, Boost Local Economy Community News Pasadena Will Allow Vaccinated People to Go Without Masks in Most Settings Starting on Tuesday EVENTS & ENTERTAINMENT | FOOD & DRINK | THE ARTS | REAL ESTATE | HOME & GARDEN | WELLNESS | SOCIAL SCENE | GETAWAYS | PARENTS & KIDS Name (required)  Mail (required) (not be published)  Website  More Cool Stuff Make a comment Top of the News center_img The Schrodinger equation, the basic description of quantum mechanical behavior, can be used to describe the motion of superfluids—fluids, supercooled to temperatures near absolute zero, that behave as though they are without viscosity. Schroder and his colleagues realized that the same equation with some small modifications can also be used to describe vorticity dominated phenomena of fluids at the macroscopic level–from smoke gently rising from a flame to the concentrated vorticity of a twister. Credit: Peter Schroder/CaltechCaltech applied scientists have developed a new way to simulate large-scale motion numerically using the mathematics that govern the universe at the quantum level.The new technique, presented at the International Conference and Exhibition on Computer Graphics & Interactive Techniques (SIGGRAPH), held in Anaheim, California, from July 24-28, allows computers to more accurately simulate vorticity, the spinning motion of a flowing fluid.A smoke ring, which seems to turn itself inside out endlessly as it floats along, is a complex demonstration of vorticity, and is incredibly difficult to simulate accurately, says Peter Schröder, Shaler Arthur Hanisch Professor of Computer Science and Applied and Computational Mathematics in the Division of Engineering and Applied Science.“Since we are computer graphics folks, we are interested in methods that capture the visual variety and drama of fluids well,” says Schröder. “What’s unique about our method is that we took a page from the quantum mechanics’s ‘playbook.’”The Schrödinger equation, the basic description of quantum mechanical behavior, can be used to describe the motion of superfluids, which are fluids supercooled to temperatures near absolute zero that behave as though they are without viscosity. Viscosity is a fluid’s resistance to deformation.“Caltech’s Richard Feynman was one of the first to recognize that superfluids are governed by so-called vortex filaments, which are basically long strings of pure vorticity,” Schröder says. “While we are not interested in quantum mechanics, we realized that the Schrödinger equation—with some tweaks—can also approximate fluids at the macroscopic level, from smoke gently rising from a flame to the concentrated vorticity of a tornadic storm.”When asked why the Schrödinger equation, usually reserved for effects at the atomic level, does so well for fluids at the macroscopic level, Schröder says, “The Schrödinger equation, as we use it, is a close relative of the non-linear Schrödinger equation which is used for the description of superfluids. Their vorticity behavior is in many ways very similar to the behavior we can also observe in the macroscopic world.”Schröder hopes his work will have an impact on computer-generated graphics, and may also be used to model real-world phenomena, such as the curling motion of a hurricane.Schröder’s paper, entitled “Schrödinger’s Smoke,” was presented on July 26. His coauthors include Albert Chern, a graduate student at Caltech; Felix Knöppel and Ulrich Pinkall of Technische Universität Berlin; and Steffen Weißmann of Google. This research was supported by the German Research Foundation, the Office of Naval Research, and the German Academic Exchange Service. Subscribe faithfernandez More » ShareTweetShare on Google+Pin on PinterestSend with WhatsApp,Virtual Schools PasadenaHomes Solve Community/Gov/Pub SafetyCitizen Service CenterPASADENA EVENTS & ACTIVITIES CALENDARClick here for Movie Showtimes First Heatwave Expected Next Week 6 recommended0 commentsShareShareTweetSharePin it Get our daily Pasadena newspaper in your email box. Free.Get all the latest Pasadena news, more than 10 fresh stories daily, 7 days a week at 7 a.m. Home of the Week: Unique Pasadena Home Located on Madeline Drive, Pasadena Herbeauty6 Fashion Trends You Should Never Try And 6 You’ll LoveHerbeautyHerbeautyHerbeautyTop 9 Predicted Haircut Trends Of 2020HerbeautyHerbeautyHerbeauty7 Most Startling Movie Moments We Didn’t Realize Were InsensitiveHerbeautyHerbeautyHerbeautyIt Works Great If Weight Loss Is What You’re Looking For!HerbeautyHerbeautyHerbeauty6 Strong Female TV Characters Who Deserve To Have A SpinoffHerbeautyHerbeautyHerbeauty15 Countries Where Men Have Difficulties Finding A WifeHerbeautyHerbeauty Business Newslast_img read more

Council urged to not financially neglect island communities

first_img Guidelines for reopening of hospitality sector published NPHET ‘positive’ on easing restrictions – Donnelly Twitter Calls for maternity restrictions to be lifted at LUH Pinterest Newsx Adverts Pinterest WhatsApp Council urged to not financially neglect island communities Previous articleLetterkenny Cllrs concerned that reduced signage costs could backfireNext articleLifford to look at new plans after one way road system rejection News Highland LUH system challenged by however, work to reduce risk to patients ongoing – Dr Hamilton Facebookcenter_img RELATED ARTICLESMORE FROM AUTHOR Three factors driving Donegal housing market – Robinson Almost 10,000 appointments cancelled in Saolta Hospital Group this week Google+ Donegal County Council’s finance department is being asked to ensure that funds are set aside for island communities in the forthcoming budget.Cllr Marie Therese Gallagher, a member of the council’s Island Committee says there’s a serious lack of investment in islands at present, and very little appreciation of what island life entails.She said for most people in Donegal, losing a light outside their house is an inconvenience, but for islanders. losing a light on a pier can be a matter of life and death.She says islanders are citizens of Donegal, and deserve the council’s support:[podcast]http://www.highlandradio.com/wp-content/uploads/2011/10/mtgal830island.mp3[/podcast] Facebook WhatsApp Google+ Twitter By News Highland – October 11, 2011 last_img read more

The Last Brazilian Field Marshal Dies in Brazil at Age 108

first_imgBy Dialogo May 15, 2009 RIO DE JANEIRO, May 14, 2009 (AFP) – Press releases have reported that the last Brazilian Field Marshal died Wednesday at the age of 108 in a hospital in Rio de Janeiro due to health complications. Waldemar Levy Cardoso was the last living marshal – the highest Army rank – in the country after the position was abolished in 1967, only to be assigned to generals in case of war, and will be buried with highest military honors after his wake in Palacio de Caxias in Rio. Cardoso, who was admitted to the Central Hospital of the Army, was appointed to office in 1966 and participated in different Brazilian historical events, including the 1930 revolution that led to the presidency of Getulio Vargas, who served two terms (1930-1945 and 1951-1954). During the last military government (1964-1985), Cardoso was President of the National Oil Council, and during seven months of 1969 led the powerful state oil company known as Petrobras.last_img read more

Sublette to lead Orange County Bar Association

first_img Sublette to lead Orange County Bar Association William E. Sublette has become president of the Orange County Bar Association for 2005-2006. Other new Orange County Bar officers include Thomas P. Wert, president-elect; C. Gene Shipley, treasurer; and Jamie B. Moses, secretary. Sublette to lead Orange County Bar Association June 1, 2005 Regular Newslast_img

Treasury outlines the crucial components of an OFAC compliance program

first_img continue reading » Recently the U.S. Department of Treasury’s Office of Foreign Assets Control (OFAC) announced the publication of A Framework for OFAC Compliance Commitments. The underlying intent of the framework is to help institutions better understand and comply with sanctions requirements.According to OFAC, a successful OFAC compliance program should utilize a risk-based approach to sanctions compliance by developing, implementing and routinely updating a sanctions compliance program (SCP).  Every risk-based SCP will vary depending on an institution’s size and sophistication, products and services, customers and counterparties, and geographic location.  However, each program should incorporate at least five essential compliance components: 1) management commitment; 2) risk assessment; 3) internal controls; 4) testing and auditing; and 5) training.  The framework further breaks down the specific features to each component in creating a strong OFAC compliance program.As an example, the framework indicates that senior management’s commitment and support of the SCP is one of the most important and critical factors in determining its success.  Support is key in ensuring the SCP obtains adequate resources and is fully-integrated into an institution’s daily operations.  This helps legitimize the program, empower personnel and foster a culture of compliance. ShareShareSharePrintMailGooglePinterestDiggRedditStumbleuponDeliciousBufferTumblrlast_img read more