Ehrenberg law-like relationship and anthropometry

Summary. Ehrenberg presented the simple law-like relationship log( w )=0.8 h  + 0.4 ± 0.04 between the weight and height of children aged 5–13 years. Several researchers have confirmed that this relationship holds, irrespective of the child's ethnic, racial, gender and social class. In anthropometry, a weight–height relationship is used to measure the nutritional status of children. For this purpose, the World Health Organization have adopted the National Center for Health Statistics population as the international reference population. The relationship between the World Health Organization–National Center for Health Statistics anthropometric standards and Ehrenberg law-like relationship is examined. Differences between the weight-for-height relationship in anthropometry and the law-like relationship between weight and height for children are small and can be attributable to functional differences. It is found that an Ehrenberg law-like relationship can be extended to include children who are under 5 years old. Criteria for using the law-like relationship to assess the nutritional status of these children are thus suggested. The criteria are evaluated using anthropometric data of a sample of 513 children from a rural district of Botswana. The results indicate that the proposed method of using the law-like relationship to assess nutritional status is much simpler and at least as reliable as the existing methods in anthropometry.     

国外企业社会责任对消费者购买意向影响研究综述

国外学者对企业社会责任(CSR)影响消费者购买意向的研究,主要是从下列三个方面展开的:一是结合企业内部相关信息,包括企业形象和声誉、伦理道德、企业能力、企业绩效和产品信息等;二是结合消费者特征,包括消费者的个体和群体特征、消费者主观维度;三是结合CSR具体内容及属性,包括CSR的信息来源、数量和传播途径等.研究的不足则主要表现在较少考虑行业特征、很少涉足影响的程度、未形成完整的理论体系和实用的研究模型等,这是在今后研究中应加以改进的地方.     

全媒体时代主流媒体的数据化生存与发展

基于互联网连接的媒体平台,正在成为各类原生数据的源发地和汇聚中心,对大数据进行整合及应用的能力,将成为未来媒体平台运营的核心能力。建构在互联网平台之上的主流媒体必然要经历从信息总汇向数据总汇的转变,在这一过程中,媒体的业态、社会功能都将发生重大变化。伴随全媒体时代信息技术的快速发展,新闻传播呈现出新的特点和规律：传播主体大众化;传播容量海量化;传播方式交互化;传播手段多维化;传播时效全时化。在这样的背景下,主流媒体应不断进行数据化的探索和创新,基于5G网络,通过大数据技术运用,强化数据库建设,以此为基础,运用基于大数据的人工智能技术改变内容生产和分发方式,并以之作为内容监管的有力武器。未来基于大数据分析的综合业务推动自身产业结构优化。     

基于EQ-5D量表的农村已婚育龄妇女健康相关生命质量评价

目的：评价农村已婚育龄妇女的生命质量,探索影响其生命质量的主要因素,提出相关政策建议。方法：应用欧洲生命质量量表（EQ-5D）的五维度测量体系及直观式健康量表（VAS）进行评价。结果：已婚育龄妇女的总体健康状况优于一般人群,妇科疾病是妇女的主要健康问题,在婚、受教育程度高且无慢性妇科病的已婚育龄妇女生命质量较高。结论：已婚育龄妇女要增强自身健康意识、调整好来自家庭与工作的压力。政府应该定期开展妇女病的普查工作,加大对女性受教育问题的重视,采取相应的政策措施,以提高妇女的生命质量。     

A note on Läuter-type robust design for polynomial regression models

In this paper, we consider the problem of model robust design for simultaneous parameter estimation among a class of polynomial regression models with degree up to k. A generalized D-optimality criterion, the Ψ_α‐optimality criterion, first introduced by Läuter (1974) is considered for this problem. By applying the theory of canonical moments and the technique of maximin principle, we derive a model robust optimal design in the sense of having highest minimum Ψ_α‐efficiency. Numerical comparison indicates that the proposed design has remarkable performance for parameter estimation in all of the considered rival models.     

Choice of reinforcement rates and work rates with concurrent schedules

A constrained optimisation theory or choice in concurrent schedules of reinforcement is presented. The theory posits that subjects evaluate both reinforcement rates and the work rates required to produce them and select the most highly valued combination. The chosen reinforcement rate is obtained by efficiently allocating work rate across schedules. The theory provides a unified explanation for maximisation of the overall reinforcement rate, the law of least effort, choice under Conc FR FR, Conc VR VR. Conc VI VI and Conc VI VR schedules, and choice of work rate.     

IPSec网络安全协议及其应用

当今的世界是网络的世界,数以万计的人们通过互联网来传递信息,实现办公。因此,如何保证网络的安全成为人们日益关注的问题。IPSec就是在IPV4数据包结构上增加的一种网络安全性服务,使网络实现了安全通讯。     

农村公共服务体系的现状、问题和对策——基于福建省沿海5地市的调查

该文选择福建沿海5地市35个行政村为样本,基于实地调研数据,从农村基础设施建设服务、农村公共卫生医疗服务、社会保障服务、教育文化服务、农村科技服务、农村就业服务以及农村公共信息服务等多个方面研究了福建省沿海5地市农村公共服务体系的现状和存在的问题,并提出了加强和改善农村公共服务的若干政策建议。     

Response from a policymakers' perspective

The case in point (Tellado, 1984) needs to be defined in terms of a client for the research. The research may also have implications for early intervention to mitigate the problems uncovered in the case study. An important element in the development of problem-solving skills may be linguistic skills. Further research about this variable seems warranted.     

Ta-Ta_2O_5-半导体系統的失效机理Ⅰ.氧离子迁移引起的失效

本文从Ta_2O_5的微观分析出发,提出了系统的物理模型。根据这个模型,论述了系统的失效机理。联系实际系统中的常见缺陷,分析讨论了它的早期失效机理。