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国外农学（杂粮作物） 1992年第6期 1-5页

作者： s. P. walters 任蕤

玉米亲本自交系农艺性状与其测交种产量之间的相关,多年来一直是植物育种者感兴趣的事。为测定自交系产量表现与配合力之间的相关,已作过许多研究,但是,多数研究者发现,这种相关系数太小而没有预见的价值(Hallauer等,1988)。

关键词：玉米测交种相关分析

Physical activity, weight status and diet in adolescents: are children meeting the guidelines

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Health 2010年第10期2卷 1142-1149页

作者： spencer E. Boyle Georgina L. Jones stephen J. walters 不详

Childhood obesity is on the increase and maintaining regular physical activity and consuming a healthy diet have become essential tools to combat the condition. The United Kingdom government has recommended guidelines for optimal levels of diet and activity in children. The aim of this paper is to describe and compare self-reported physical activity levels, diet, and Body Mass Indices (BMI) amongst adolescent children, aged 11-15, in the south West (sW) and North West (NW) regions of England and to see if these children were meeting the current targets for optimal levels of: physical activity;fruit/vegetable consumption;fat consumption and BMI. We report the results of a cross-sectional survey of four secondary schools and 1,869 children using the self-reported Western Australian Child and Adolescent Physical Activity and Nutrition survey (CAPANs) physical activity instrument and a food intake screener questionnaire, in summer and winter. We found that 25% (469/1869) 95% CI: 23% to 27%, of children engaged in 60 minutes of moderate to vigorous physical activity per day;53% (995/1866) 95% CI: 51% to 56%, took 5 portions of fruit and vegetables per day;while 22% (407/1861) 95% CI: 20% to 24% consumed recommended amount of fats, and 23.7% (276/1164) 95% CI: 21% to 26%, of pupils were obese or overweight as classified by their BMI. self reported physical activity in young people regardless of area is lower than previously reported and the lack of students engaging in 60 minutes moderate to vigorous activity could have serious public health consequences. If sustained, this could lead to more overweight adults, and more ill health.

关键词： Physical Activity Diet Exercise Adolescents Guidelines

Use of the IRT Model to Validate Test Items from a Technology Assisted Health Coaching Program

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Open Journal of statistics 2018年第3期8卷 519-532页

作者： Elysia Garcia subhash Aryal Emily spence-Almaguer Danielle Rohr scott T. walters Department of Biostatistics and Epidemiology UNT Health Science Center Fort Worth TX USA Department of Health Behavior and Health systems UNT Health Science Center Fort Worth TX USA

Item Response Theory (IRT) models have been extensively used in the field of education to identify link between a response to a test item and underlying latent capability of the test taker. We demonstrate the benefit of using IRT model to analyze health data using data from M. chat program such that statisticians can use the method in lieu of traditional methods including Cronbach’s alpha, discriminant analysis and factor analysis. M. chat is a technology based health coaching program and the baseline survey from the participants in the program includes response in different but correlated domains of diet, social habits, leisure practices, mental health, substance abuse, self-sufficiency and medication adherence. We analyzed baseline data from 416 subjects using IRT models. Our results indicated that responses pertaining to alcohol and substance abuse were the most discriminating items with an average discrimination estimate of approximately 4.99 whereas the least discriminating items were the diet habits, with an average estimate of -0.476.

关键词： IRT M. Chat Program Health Coaching

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艾伦·德杰尼勒斯:我“出柜”,但我很出色

疯狂英语（阅读版） 2014年第5期 4-9页

作者： Ben walters Mac

去年九月的时候，艾伦一德杰尼勒斯在自己的脱口秀节目上对观众讲述了主持奥斯卡颁奖礼的好处和坏处：“好处是，一堆花俏的设计师会来找你，希望你穿上一条漂亮又昂贵的礼裙；坏处是，我打死也不会穿上礼裙。”观众席上爆发出一阵欢呼声。

关键词：艾伦脱口秀节目奥斯卡设计师观众主持

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听,天使在敲门

疯狂英语（阅读版） 2004年第11期 26-31页

作者： Dottie walters 朱俊

奶奶曾跟我提起过天使。她说,每当天使想捎个信给我们,他们就会来叩响我们的心门。我不由地浮想联翩,仿佛看见天使的双翅间挂着一个大大的邮包,头上戴着邮递员帽,得意洋洋。我真想知道,邮票上是否印有“天堂快递”四个字。“等着天使来... 详细信息

奶奶曾跟我提起过天使。她说,每当天使想捎个信给我们,他们就会来叩响我们的心门。我不由地浮想联翩,仿佛看见天使的双翅间挂着一个大大的邮包,头上戴着邮递员帽,得意洋洋。我真想知道,邮票上是否印有“天堂快递”四个字。“等着天使来给你开门是不会有结果的,”奶奶说,“你的心门上只有一个把手,也只有一把插销,而且都在朝里的一边,你内心那边。你得时刻留心,天使的敲门声一响你就要飞快地拉开插销,把门打开。”

关键词：整形外科心门钢琴课精神力量方向盘铲车洛杉矶 fork 倒栽月沼

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跟着26部电影环游世界

商业周刊（中文版） 2016年第15期 110-111页

作者： David walters

如果你还没拿定主意去哪儿旅行，就让好莱坞当你的参谋吧，毕竟跟着电影玩还是错不了的。

关键词：电影世界好莱坞

Predicting numerically the large increases in extra pressure drop when boger fluids flow through

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Natural science 2010年第1期2卷 1-11页

作者： H. R. Tamaddon-Jahromi M. F. Webster K. walters 不详

Recent numerical studies on pressure-drops in contraction flows have introduced a variety of constitutive models to compare and contrast the competing influences of extensional vis-cosity, normal stress and shear-thinning. Early work on pressure-drops employed the constant viscosity Oldroyd-B and Upper Convected Max- well (UCM) models to represent the behavior of so-called Boger fluids in axisymmetric contrac-tion flows, in (unsuccessful) attempts to predict the very large enhancements that were ob-served experimentally. In more recent studies, other constitutive models have been employed to interpret observed behavior and some pro-gress has been made, although finding a (re-spectable) model to describe observed contrac-tion-flow behavior, even qualitatively, has been frustratingly difficult. With this in mind, the present study discusses the ability of a well- known FENE type model (the so-called FENE- CR model) to describe observed behavior. For various reasons, an axisymmetric (4:1:4) con-traction/expansion geometry, with rounded corners, is singled out for special attention, and a new hybrid finite element/volume algo-rithm is utilized to conduct the modeling, which reflects an incremental pressure-correction time-stepping structure. New to this algo-rithmic formulation are techniques in time discretization, discrete treatment of pressure terms, and compatible stress/velocity-gradient representation. We shall argue that the current simulations for the FENE-CR model have re-sulted in a major improvement in the sort-for agreement between theory and experiment in this important bench-mark problem.

关键词： Contraction Flows Extra Pressure Drop Numerical simulation Extensional Viscosity Normal stress Differences

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别被晒伤了

商业周刊（中文版） 2015年第13期 106-107页

作者： Maura Kutner walters

夏日防晒新品。时尚的防紫外线服装，最新最酷的太阳镜，好用的防晒霜，让你避免被晒伤。

关键词：防紫外线防晒霜太阳镜服装

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为何不骑车去上班？

商业周刊（中文版） 2015年第15期 104-105页

作者： Maura Kutner walters

两个车轮六种方式从城里难？郊区？还是更远的地方？这里有骑车通勤的最佳选择。适合繁华街道这款经典的通勤工具采用古老的钢结构——灵感来自经典品牌施文（schwinn）。

关键词：上班马奇钢结构自行车垃圾堆创始人裙子

Further Compatibility studies of Lecanicillium Muscarium with Insecticides for Eradication of Bemisia tabaci in UK Glasshouses

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Further Compatibility Studies of Lecanicillium Muscarium wit...