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A Survey on Parallel Computing and its Applications in Data-Parallel Problems Using GPU Architectures

Communications in Computational Physics 2014年第2期15卷 285-329页

作者： Cristobal A.Navarro nancy Hitschfeld-Kahler Luis Mateu Department of Computer Science(DCC) Universidad de ChileSantiagoChile Centro de Estudios Cient´ıficos(CECS) ValdiviaChile.

Parallel computing has become an important subject in the field of computer science and has proven to be critical when researching high performance *** evolution of computer architectures(multi-core and many-core)towards a higher number of cores can only confirm that parallelism is the method of choice for speeding up an *** the last decade,the graphics processing unit,or GPU,has gained an important place in the field of high performance computing(HPC)because of its low cost and massive parallel processing ***-computing has become,for the first time,available to anyone at the price of a desktop *** this paper,we survey the concept of parallel computing and especially GPU *** efficient parallel algorithms for the GPU is not a trivial task,there are several technical restrictions that must be satisfied in order to achieve the expected *** of these limitations are consequences of the underlying architecture of the GPU and the theoretical models behind *** goal is to present a set of theoretical and technical concepts that are often required to understand the GPU and its massive parallelism *** particular,we show how this new technology can help the field of computational physics,especially when the problem is *** present four examples of computational physics problems;n-body,collision detection,Potts model and cellular automata *** examples well represent the kind of problems that are suitable for GPU *** understanding the GPU architecture and its massive parallelism programming model,one can overcome many of the technical limitations found along the way,design better GPU-based algorithms for computational physics problems and achieve speedups that can reach up to two orders of magnitude when compared to sequential implementations.

关键词： GPU computing parallel computing computing models algorithms data parallel massive parallelism Potts model Ising Model collision detection n-body Cellular Automata.

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Inexact Proximal Point Methods for Quasiconvex Minimization on Hadamard Manifolds

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Journal of the Operations Research Society of China 2016年第4期4卷 397-424页

作者： nancy Baygorrea Erik Alex Papa Quiroz Nelson Maculan Federal University of Rio de Janeiro PESC-COPPE-UFRJPO Box 68511Rio de Janeiro CEP 21941-972Brazil

In this paper we present two inexact proximal point algorithms to solve minimization problems for quasiconvex objective functions on Hadamard *** prove that under natural assumptions the sequence generated by the algorithms are well defined and converge to critical points of the *** also present an application of the method to demand theory in economy.

关键词： Proximal point method Quasiconvex function Hadamard manifolds Nonsmooth optimization Abstract subdifferential

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Bedside ultrasound in the diagnosis of nonalcoholic fatty liver disease

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World Journal of Gastroenterology 2014年第22期20卷 6821-6825页

作者： nancy Khov Amol Sharma Thomas R Riley Department of Internal Medicine Pennsylvania State Milton S. Hershey Medical Center and School of MedicineHersheyPA 17033United States Division of Gastroenterology and Hepatology Department of Internal MedicinePennsylvania State Milton S. Hershey Medical Center and School of MedicineHersheyPA 17033United States

Non-alcoholic fatty liver disease(NAFLD)is the most common liver disease in the United *** the American Association for the Study of Liver Diseases guidelines define NAFLD as hepatic steatosis detected either on histology or imaging without a secondary cause of abnormal hepatic fat accumulation,no imaging modality is recommended as standard of care for screening or *** ultrasound has been evaluated as a non-invasive method of diagnosing NAFLD with the presence of characteristic sonographic *** studies suggest characteristic sonographic findings for NAFLD include bright hepatic echoes,increased hepatorenal echogenicity,vascular blurring of portal or hepatic vein and subcutaneous tissue *** sonographic characteristics have not been shown to aid bedside clinicians easily identify potential cases of *** sonographic findings such as attenuation of image,diffuse echogenicity,uniform heterogeneous liver,thick subcutaneous depth,and enlarged liver filling of the entire field could be identifiedby clinicians from bedside *** accessibility,ease of use,and low-side effect profile of ultrasound make bedside ultrasound an appealing imaging modality in the detection of hepatic *** used with appropriate clinical risk factors and steatosis involves greater than 33%of the liver,ultrasound can reliably diagnose *** the ability of ultrasound in detecting moderate hepatic steatosis,it cannot replace liver biopsy in staging the degree of *** purpose of this review is to examine the diagnostic accuracy,utility,and limitations of ultrasound in the diagnosis of NAFLD and its potential use by clinicians in routine practices.

关键词： Non-alcoholic fatty liver disease Non-alcoholic steatohepatitis Liver fibrosis Liver biopsy Liver disease Liver cirrhosis Steatosis Bedside ultrasound

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Early Cambrian Ichnofossils from the Mussoorie Syncline and revision of Trace Fossil Biozonation of the Lesser Himalaya, India

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Acta Geologica Sinica(English Edition) 2014年第2期88卷 380-393页

作者： Birendra P. Singh Kapesa Lokho Naval Kishore nancy Virmani Center of Advanced Study in Geology Panjab University Wadia Institute of Himalayan Geology

A new locality bearing ichnofossils of the Cruziana Assemblage Zone-Ⅲ from the Mussoorie syncline,Lesser Himalaya,is located in rocks of Member-B of the Dhaulagiri Formation,Tal Group,exposed along the Maldewta-Chhimoli fresh road cut *** site yielded ichnofossils Bergaueria perata,Cochlichnus anguineus,？Diplocraterion isp.,Dimorphichnus obliquus,diplichnitiform Cruziana bonariensis,Diplichnites gouldi,Glockeria isp.,Helminthopsis isp.,Monomorphichnus lineatus,Phycodes palmatum,Palaeophycus striatus,Planolites beverleyensis,Planolites montanus,Treptichnus ***,scratch marks and an undetermined worm *** Early Cambrian age （Cambrian Series 2） is assigned to the ichnofossil-bearing strata based on the stratigraphic position between the Drepanuroides and Palaeoolenus trilobite zones.A revised Cambrian ichnofossil zonation is presented for the Tal Group of the Mussoorie *** with their occurrence on rippled surfaces,and the lateral displacement of some trackways （due to current action）,a sub-aqueous shallow-marine depositional setting is proposed for the rocks of Member-B.

关键词： Ichnology Cruziana Assemblage Zone Cambrian Series 2 shallow-marine northern India

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Temporal trends in the relative prevalence of dysphagia etiologies from 1999-2009

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World Journal of Gastroenterology 2012年第32期18卷 4335-4341页

作者： Trilokesh Kidambi Erin Toto nancy Ho Tiffany Taft Ikuo Hirano Division of Gastroenterology Northwestern University Feinberg School of MedicineChicagoIL 60611United States Department of Medicine University of California at San FranciscoSan FranciscoCA 94143United States Department of Medicine Northwestern University Feinberg School of MedicineChicagoIL 60611United States

AIM:To examine the relative prevalence and temporal variation of dysphagia etiologies in patients undergoing upper endoscopy(EGD) over the past ***:EGDs with the indication of dysphagia at an urban,university medical center in 1999,2004 and 2009 were retrospectively identified from the electronic medical *** entire patient chart,including EGD,pathology,manometry,radiographic and clinician reports,was reviewed for demographic and clinical data and to determine the etiology of *** number of EGDs in which an esophageal biopsy was performed was also *** reflux disease(GERD) as a cause of dysphagia independent of peptic stricture was defined by symptoms with erosive esophagitis or symptom response to proton pump inhibition(PPI).Cases of eosinophilic esophagitis(EoE) were defined by an appropriate clinical history and histological criteria of ≥ 15 eosinophils per high powered ***-responsive esophageal eosinophilia was not routinely reported prior to *** analysis was performed using one-way analysis of variance to analyze for trends between 1999,2004 and 2009 and a post-hoc Tukey analysis was performed following a significant main ***:A total of 1371 cases(mean age 54 years,43% male) met pre-specified inclusion criteria with 191,504 and 675 cases in 1999,2004 and 2009,*** were older in 2004 compared to 2009(mean ± SD,54.0 ± 15.7 years vs 52.3 ± 16.8 years,P = 0.02) and there were more males in 1999 compared to 2004(57.5% vs 40.8%,P = 0.005).Overall,GERD(27.6%) and EoE(7.7%) were the most common identifiable causes of *** unspecified diagnosis accounted for 21% of overall *** were no significant differences in the relative prevalence of achalasia or other motility disorders,peptic stricture,Schatzki's ring,esophageal cancer or unspecified diagnoses over the 10-year time *** was,however,a decrease in the relative prevalence of GERD(39.3% vs 24.1%,P < 0.001

关键词： Eosinophilic esophagitis Gastroesophageal reflux disease Dysphagia Endoscopy Esophagitis Esophageal diseases

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Thymoma and autoimmunity

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Cellular & Molecular Immunology 2011年第3期8卷 199-202页

作者： Shahar Shelly nancy Agmon-Levin Arie Altman Yehuda Shoenfeld The Zabludovicz Center for Autoimmune Diseases Sheba Medical CenterTel-Hashomeraffiliated with Sackler Faculty of MedicineTel Aviv UniversityIsrael Department of Medicine‘B’ Sheba Medical CenterTel-HashomerIsrael Sackler Faculty of Medicine Incumbent of the Laura Schwarz-Kip Chair for Research of Zabludowitz Center for Autoimmune DiseasesTel-Aviv UniversityTel-AvivIsrael

The thymus is a central lymphatic organ that is responsible for many immunological functions,including the production of mature,functional T cells and the induction of *** or malignant tumors may originate from the thymus gland,with thymoma being the most common and accounting for 50% of anterior mediastinal *** linked to thymoma include the loss of self-tolerance and the presence of *** this review,we compiled the current scientific evidence detailing the various interactions between thymoma and autoimmune diseases,including myasthenia gravis,systemic lupus erythematosus,inappropriate antidiuretic hormone secretion,pure red cell aplasia,pernicious anemia,pemphigus and autoimmune thyroid *** recent years,several mechanisms have been proposed to explain these *** are based on the assumption that the‘sick’thymus,like the‘normal’thymus,can generate mature T cells;however,the T cells generated by the sick thymus are impaired and thus may exert cellular ***,we present several theories that may shed light on the loss of self-tolerance associated with this epithelial tumor of the thymus.

关键词： autoimmune diseases autoimmunity self-tolerance thymoma thymus

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Examining the relationship between sport and health among USA women:An analysis of the Behavioral Risk Factor Surveillance System

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Journal of Sport and Health Science 2016年第4期5卷 403-409页

作者： Jennifer R.Pharr nancy L.Loug Department of Environmental and Occupational Health University of Nevada Las Vegas College of Education University of Nevada Las Vegas

Background：Research has been conducted linking sports participation and health in childhood and adolescence;however,little is known about the contribution of sport to women＇s *** purpose of this study was to examine the relationship between sport and women＇s health in the USA by analyzing data from the Behavioral Risk Factor Surveillance System（BRFSS）.Methods：This study was a secondary data analysis of the 2013 national BRFSS *** the BRFSS core component from previous years,in2013,participants were questioned extensively about their physical activity ***-six different activities were identifie by the *** researchers categorized the 76 activities as sport,conditioning exercise,recreation,or household tasks based on previously identifie *** regression was utilized to calculate odds ratios and adjusted odds ratios for chronic diseases based on physical activity ***：Women who participated in sport had better health outcomes with significant y lower odds for all chronic diseases except asthma and better general health than women who participated in conditioning exercise,household tasks,or recreation,and many of the significan differences remained after controlling for demographic ***：Sport participation was associated with more positive health outcomes among women in the USA compared with the other *** a means to improve health of women,the USA could focus on efforts to increase sport participation among women.

关键词： Chronic diseases Conditioning exercise Leisure-time physical activity Recreation Sport participation Women's health

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3D Studio applied tutorials, tips and tricks for 3D studio release 3

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1993年

作者： nancy Fulton

来源：畅想之星图书光盘版（南... 评论

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Biomass derived porous nitrogen doped carbon for electrochemical devices

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Green Energy & Environment 2017年第2期2卷 84-99页

作者： Litao Yan Jiuling Yu Jessica Houston nancy Flores Hongmei Luo Department of Chemical and Materials Engineering New Mexico State University Extension Family Consumer Science New Mexico State University

Biomass derived porous nanostructured nitrogen doped carbon(PNC) has been extensively investigated as the electrode material for electrochemical catalytic reactions and rechargeable batteries. Biomass with and without containing nitrogen could be designed and optimized to prepare PNC via hydrothermal carbonization, pyrolysis, and other methods. The presence of nitrogen in carbon can provide more active sites for ion absorption, improve the electronic conductivity, increase the bonding between carbon and sulfur, and enhance the electrochemical catalytic reaction. The synthetic methods of natural biomass derived PNC, heteroatomic co-or tri-doping into biomass derived carbon and the application of biomass derived PNC in rechargeable Li/Na batteries, high energy density Li-S batteries, supercapacitors, metal-air batteries and electrochemical catalytic reaction(oxygen reduction and evolution reactions, hydrogen evolution reaction) are summarized and discussed in this review. Biomass derived PNCs deliver high performance electrochemical storage properties for rechargeable batteries/supercapacitors and superior electrochemical catalytic performance toward hydrogen evolution, oxygen reduction and evolution, as promising electrodes for electrochemical devices including battery technologies, fuel cell and electrolyzer.

关键词： Biomass Nitrogen doped carbon Batteries Fuel cell Electrolyzer

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最好的活法，是这3种方式

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好日子 2024年第2期

作者： nancy 紫陌

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