Physiological and psychophysical responses in handling maximum acceptable weights under different footwear--floor friction conditions

A study on combined manual materials-handling tasks performed on floors under three friction levels was conducted. Eight male subjects participated in the study. The maximum acceptable weight of handling, including lifting, carrying for 3m, lowering, and walking 3m back at twice per minute was determined. The subject then performed the same tasks for 10 min. Heart rate, Vo2, energy efficiency, perceived sense of slip, and rating of perceived exertion for whole body strain were measured. The results showed that the effects of friction level on the maximum acceptable weights of handling, perceived sense of slip, Vo2, and energy efficiency were statistically significant (p相似文献   

The new neighbourhood in the internet era: network communities serving local communities

The past two decades have witnessed many attempts to transform online communities in new neighbourhoods of the Internet era. In particular, one of the most interesting applications of Internet Technologies in this field have been ‘network communities’, that differ from online communities because they refer to a specific territory and, for this reason, serve as a social catalyst for the corresponding territorial community. Network communities, as virtual neighbourhoods, have the purpose of allowing a better understanding of physical ones, contributing to the creation and the proliferation of services most suited to the needs of residents. For this reason, municipalities and local governments should consider the opportunity to exploit network communities as useful tools for local community management. Following this lead, this article analyses a real case study and highlights the existence of a positive correlation between a constructive utilisation of a network community by its members, their sense of community and the degree of their involvement in local problems.     

药妆品胜肽的合成及作用机制研究进展

综述了胜肽在药妆品领域的应用、常用胜肽的合成方法及其研究进展,同时按照功能作用机理重点陈述了3类胜肽:信号类胜肽(Signal peptides)、神经递质抑制类胜肽(Neurotransmitter-inhibiting peptides)、承载类胜肽(Carried peptides)的皮肤护理作用机制.最后对我国胜肽产业的发展进行了展望.     

试析教师的精气神

教师生理上的精、气、神是教学上的精、气、神之根本动力,也是教学创新的核心,能起到事半功倍的作用。教师要想收获精彩的人生,做一个称职的教师,就必须在教学上拥有精、气、神。     

丽江西林瓦村纳西聚落美之要素研究

本文以云南丽江西林瓦村纳西聚落为研究对象。通过实地调研、案例分析、归纳总结等方法,分析其选址生聚、街道脉络、院落秩序、建筑造型、细部涵义诸方面对于生态之美、形式之美、生活之美的积极作用,提出院落组织的逻辑有序,因势相宜是纳西聚落之美的核心,是进一步研究和发扬的岀发点.     

中文问句分类特征的研究

针对"不同的问句分类特征对问句分类的影响不相同,提取和处理这些特征的时间复杂度也不相同"的问题,提取问题疑问词、核心关键词(疑问词的一二级依存词和问句中心语)的主要义原、核心关键词的首义原、问句主谓宾的主要义原、命名实体、名词单(复)数等六种分类特征,采用支持向量机分类算法,对事实疑问句进行不同特征组合的分类对比实验,发现采用词义消岐技术提取的主要义原不仅对分类的准确率影响明显,而且大幅降低特征向量的维数,减少了处理时间。     

深层话语——城市设计的文化与美

随着我国城市的日益繁荣,城市形象成为令人关注的文化资本。为了改善形象,促进经济发展,城市设计作为城市规划与建筑设计衔接的重要阶段,也日趋成熟。但是,目前的设计似乎都存在重形式、轻本质的现象。本文从文化与美两个角度,结合实际案例阐述设计的本质,以求对城市设计的实践有所裨益。     

语义网络结构下的词义消歧

提出了一种基于语义网络结构的词义消歧方法。将文本片段中出现词的所有词义都看作节点，将两个词的任意两个词义之间的语义关系看作弧，将语义关系的紧密程度看作弧的权重，从而构成一个无向赋权网络；将Google的网页分级（PageRank）算法应用到无向赋权图中，评价网络中节点的重要性，并结合共指词义和词义的常用程度，对文本中出现的名词进行消歧。实验证明了该方法对文本进行词义消歧是有效的。     

基于AdaBoost.MH算法的汉语多义词消歧

本文提出一种基于AdaBoost MH算法的有指导的汉语多义词消歧方法,该方法利用AdaBoost MH算法对决策树产生的弱规则进行加强,经过若干次迭代后,最终得到一个准确度更高的分类规则;并给出了一种简单的终止算法中迭代的方法;为获取多义词上下文中的知识源,在采用传统的词性标注和局部搭配序列等知识源的基础上,引入了一种新的知识源,即语义范畴,提高了算法的学习效率和排歧的正确率。通过对6个典型多义词和SENSEVAL3中文语料中20个多义词的词义消歧实验,AdaBoost MH算法获得了较高的开放测试正确率(85.75%)。     

Roles of Sexual Objectification Experiences and Internalization of Standards of Beauty in Eating Disorder Symptomatology: A Test and Extension of Objectification Theory.

This study extends the literature on eating disorder symptomatology by testing, based on extant literature on objectification theory (B. L. Fredrickson & T. Roberts, 1997) and the role of sociocultural standards of beauty (e.g., L. J. Heinberg, J. K. Thompson, & S. Stormer, 1995), a model that examines (a) links of reported sexual objectification experiences to eating disorder-related variables and (b) the mediating roles of body surveillance, body shame, and internalization of sociocultural standards of beauty. Consistent with hypotheses, with a sample of 221 young women, support was found for a model in which (a) internalization of sociocultural standards of beauty mediated the links of sexual objectification experiences to body surveillance, body shame, and eating disorder symptoms, (b) body surveillance was an additional mediator of the link of reported sexual objectification experiences to body shame, and (c) body shame mediated the links of internalization and body surveillance to disordered eating. (PsycINFO Database Record (c) 2010 APA, all rights reserved)