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计算机研究与发展 2006年第1期43卷 159-168页

作者：老松杨黄广连 alan F.Smeaton Gareth j.F.j.nes Hyowon Lee 国防科学技术大学信息系统与管理学院长沙410073 都柏林城市大学数字视频处理研究中心

足球是最具世界性的体育运动之一,球迷遍布五大洲,因此在体育视频节目中足球备受广大观众青睐·在分析了足球视频特点的基础上,提出了一种基于基本语义单元合成Petri网的足球视频查询描述模型·该模型首先定义了一种类似文本字词集合的... 详细信息

足球是最具世界性的体育运动之一,球迷遍布五大洲,因此在体育视频节目中足球备受广大观众青睐·在分析了足球视频特点的基础上,提出了一种基于基本语义单元合成Petri网的足球视频查询描述模型·该模型首先定义了一种类似文本字词集合的足球视频基本语义单元集合,在此基础上采用基本语义单元合成Petri网模型建立了一种足球查询语义的描述模型,并分别构建了进球、进攻、角球、犯规、换人等足球语义·初步的实验结果验证了该模型的有效性,并能推广至球类视频和其他体育视频·

关键词：基本语义单元合成Petri网足球视频查询模型

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澳大利亚当前数学教育研究概说

数学通报 2001年第4期40卷 35-36,25页

作者：曹中军 alan j 河南大学数学系 475001 Bishop Monash University

澳大利亚的数学教育是一个很活跃的研究领域.主要表现为有全国性的数学教育研究组织,研究力量分布广泛,研究课题多样,并能获得一定的研究基金等.本文试图将澳大利亚当前的数学教育研究做一概述.

关键词： AAMT 课程设置种族数学研究基金教育刊物澳大利亚数学教育研究研究组织 MERGA

Autodesk Inventor 9 : essentials plus

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Case Study-IH 10 Frontage Road Construction Proj.ct Development and Management

2005年

作者： Daniel T. Banach Travis j.nes alan j. Kalamej.

ISBN: (纸本)1401896596;9781401896591

Nearly 800 screen captures adorning this book assist in the clarification of essential Autodesk Inventor? concepts, from basic sketching and modeling through advanced modeling techniques. Thoroughly up-to-date, this ?how-to? and reference manual provides in-depth explanations of the user interface, toolbars, dialogue boxes, sketch tools, drawing views, assembly modeling, and more for learning and

关键词： Engineering graphics.Engineering modelsData processing.Computeraided designComputer programs.

来源：畅想之星图书光盘版（南... 评论

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Case Study-IH 10 Frontage Road Construction Project Developm...

Fine-scale hydrologic modeling for regional landscape applications:the California Basin Characterization Model development and performance

第六届交通运输领域国际学术会议

作者： alan j.Wang Texas Department of Transportation USA

＜正＞This paper presents a real case study to demonstrate how a highway construction proj.ct were developed and managed;and what kinds of coordination were conducted to ensure the proj.ct to be developed effectively and within a timely manner. The purposes of this paper are to address the importance of proj.ct design procedures and key management aspects that are associated with the transportation systems development.

关键词： Highway Design Transportation Proj.ct Development & Management Roadway Construction Utility Coordination Traffic Control Environmental Cleaning Hydraulic Flood Mitigation Structure Design Exemption

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Ecological Processes 2013年第1期2卷 254-274页

作者： Lorraine E Flint alan L Flint j.mes H Thorne Ryan Boynton Water Resources Discipline U.S.Geological SurveyPlacer Hall6000 J StreetSacramentoCA 95819-6129USA Information Center for the Environment University of CaliforniaDavisCA95616USA

Introduction:Resource managers need spatially explicit models of hydrologic response to changes in key climatic drivers across variable landscape *** demonstrate the utility of a Basin Characterization Model for California(CA-BCM)to integrate high-resolution data on physical watershed characteristics with historical or proj.cted climate data to predict watershed-specific hydrologic ***:The CA-BCM applies a monthly regional water-balance model to simulate hydrologic responses to climate at the spatial resolution of a 270-m *** model has been calibrated using a total of 159 relatively unimpaired watersheds for the California ***:As a result of calibration,predicted basin discharge closely matches measured data for validation *** CA-BCM recharge and runoff estimates,combined with estimates of snowpack and timing of snowmelt,provide a basis for assessing variations in water *** important output variable,climatic water deficit,integrates the combined effects of temperature and rainfall on site-specific soil moisture,a factor that plants may respond to more directly than air temperature and precipitation *** outputs are calculated for each grid cell,allowing results to be summarized for a variety of planning units including hillslopes,watersheds,ecoregions,or political ***:The ability to confidently calculate hydrologic outputs at fine spatial scales provides a new suite of hydrologic predictor variables that can be used for a variety of purposes,such as proj.ctions of changes in water availability,environmental demand,or distribution of plants and *** we present the framework of the CA-BCM model for the California hydrologic region,a test of model performance on 159 watersheds,summary results for the region for the 1981–2010 time period,and changes since the 1951–1980 time period.

关键词： Water balance Basin models Watershed hydrology Climate change Downscaling Basin characterization model

Crystal-oriented wrinkles with origami-type j.nctions in few-layer hexagonal boron nitride

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Nano Research 2015年第5期8卷 1680-1688页

作者： Camilla K. Oliveira Egleidson F. A. Gomes Mariana C. Prado Thonimar V. Alencar Regiane Nascimento Leandro M. Malard Ronaldo j. C. Batista alan B. de Oliveira Helio Chacham Ana M. de Paula Bernardo R, A. Neves Departamento de Fisica ICEx Universidade Federal de Minas Gerais - UFMG C.P. 702 30123-970 - Belo Horizonte Brazil Departamento de Fisica ICEB Universidade Federal de Ouro Preto - UFOP 35400-000 - Ouro Preto Brazil

Understanding layer interplay is the key to utilizing layered heterostructures formed by the stacking of different two-dimensional materials for device applications. Boron nitride has been demonstrated to be an ideal substrate on which to build graphene devices with improved mobilities. Here we present studies on the morphology and optical response of annealed few-layer hexagonal boron nitride flakes deposited on a silicon substrate that reveal the formation of linear wrinkles along well-defined crystallographic directions. The wrinkles formed a network of primarily threefold and occasionally fourfold origami-type j.nctions throughout the sample, and all threefold j.nctions and wrinkles formed along the armchair crystallographic direction. Furthermore, molecular dynamics simulations yielded, through spontaneous symmetry breaking, wrinkle j.nction morphologies that are consistent with both the experimental results and the proposed origami-folding model. Our findings indicate that this morphology may be a general feature of several two-dimensional materials under proper stress-strain conditions, resulting in direct consequences in device strain engineering.

关键词： hexagonal boron nitride 2D materials wrinkles origami folding annealing

禽流感病毒H5N1基因突变对神经氨酸酶抑制剂敏感性和神经氨酸酶活性的影响

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中华医学杂志 2010年第27期90卷 1924-1928页

作者：谌资郑煜煌 Yipu Lin Patrick j.Collins alan j.Hay 中南大学湘雅二医院感染科长沙410011 WHO Influenza Collaborating Centre National Institute for Medical Research

目的研究感染人的禽流感病毒H5N1神经氨酸酶突变I117V,I314V,I117V＋I314V对神经氨酸酶抑制剂（NAIs）敏感性和神经氨酸酶（NA）活性的影响.方法定点突变技术将变异位点引入禽流感病毒株A/Vietnam/1203/04（H5N1）（VN1203）的NA基因... 详细信息

目的研究感染人的禽流感病毒H5N1神经氨酸酶突变I117V,I314V,I117V＋I314V对神经氨酸酶抑制剂（NAIs）敏感性和神经氨酸酶（NA）活性的影响.方法定点突变技术将变异位点引入禽流感病毒株A/Vietnam/1203/04（H5N1）（VN1203）的NA基因中,以A/WSN/33（H1N1）为背景,通过反向遗传学方法构建重组流感病毒,鸡胚传代增殖病毒,荧光定量评估病毒对NAIs的敏感性和NA活性（IC50值和Km,Ki值）.结果与野生株VN1203相比,I117V使NA对奥司他韦敏感性降低（IC50值升高了17倍,Ki值升高了20倍）,对扎那米韦敏感性无明显影响（IC50值升高了2倍,Ki值升高了3倍）,NA活性降低（Km值升高了23倍）.I314V对NAIs敏感性和NA活性均无明显影响.结论初步结果认为NA突变I117V和I314V对感染人的禽流感病毒H5N1并不产生NAIs耐药,临床上仍然可以用奥司他韦或扎那米韦抗病毒治疗.

关键词：正粘病毒科神经氨酸酶突变酶抑制剂禽流感病毒H5N1

Understanding Chinese international college and university students' physical activity behavior

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j.urnal of Sport and Health Science 2015年第2期4卷 203-210页

作者： Zi Yan Bradley j.Cardinal alan C.Acock Department of Health Sciences-N8 Merrimack College College of Public Health and Human Sciences Oregon State University

Obj.ctive： To examine factors of the youth physical activity promotion （YPAP） model that are associated with Chinese international students＇ meeting PA recommendations （MPAR）. Methods： A total of 649 （females = 320, males = 329） Chinese international college students participated in the study. This study was conducted in the United States （US.） between j.ne and August in 2011. Participants completed an online survey regarding their demographic, PA, predisposing, enabling, and reinforcing factors. Results： Logistic nested-regression analysis suggested that being male, having a higher body mass index, perceived competence, self-efficacy, attitude, and enj.yment all increased （p 〈 0.001） the participants＇ odds of MPAR. Except language barriers, all of the enabling and reinforcing factors predicted MPAR indirectly through the predisposing factors （p 〈 0.001）. Conclusion： Understanding factors that influence PA among Chinese international students is an important step in the process of promoting their long-term health and wellbeing. Designing program that address the identified key factors may help colleges and universities achieve this goal.

关键词： Health behavior Health promotion Higher education Youth physical activity promotion model

Implications of obesity in patients with foot and ankle pathology

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World j.urnal of Orthopedics 2023年第5期14卷 294-301页

作者： Hugo A Ubillus alan P Samsonov Mohammad T Azam Megan P Forney Thelma R j.menez Mosquea Raymond j.Walls Department of Orthopedic Surgery NYU Langone HealthNew York CityNY 10002United States Department of Surgery University of CincinnatiCincinnatiOH 45267United States

Obesity is a growing problem defined as a body mass index of greater than 30 kg/*** is predicted that by 2030,48.9%of adults will be classified as obese which expands surgical risk factors to a broad population while increasing healthcare costs at the same time in different socioeconomic *** specific population has been widely studied in multiple surgical fields and published studies have shown the implications in each of these *** impact of obesity on orthopedic surgical outcomes has been previously reported in several total hip and knee arthroscopy studies,with evidence indicating that obesity is strongly associated with an increased risk of post operative complications together with higher revision *** line with increasing interest on the impact of obesity in orthopedics,there has been a similar output of publications in the foot and ankle *** review article evaluates several foot and ankle pathologies,their risk factors associated with obesity and subsequent *** provides an updated,comprehensive analysis of the effects of obesity on foot and ankle surgical outcomes,with the ultimate aim of educating both surgeons and allied health professionals about the risks,benefits,and modifiable factors of operating on obese patients.

关键词： Obesity Foot and ankle surgery Ankle fracture Total ankle replacement Achilles tendinopathy Hallux valgus