多层次激励系统可靠性的敏感分析

多层次激励系统的可靠性由各子系统的可靠性及它们之间的相互关系决定。激励系统可靠性灵敏度是测量激励系统可靠性对激励层次有效概率变化的反应程度。数学模型显示,激励的层次和路径依赖度是影响激励系统可靠性的关键因素。企业可以通过将激励资源优化配置给能带来最大增量效应的对象和改善上下级依赖关系2种方法来提高激励系统可靠性。     

Development of a Measure of College Students' Adherence to Religious Doctrine Concerning Sexual Behavior

Abstract

Objective: The authors developed a 14-item measure of adherence to religious doctrine concerning sexual behavior (ARDSB). The ARDSB psychometric properties were investigated to better understand religious motivations associated with changes in sexual behavior that may provide support for sexual health promotion and prevention programs. Participants: Four hundred eighty-three undergraduates aged 18 to 26. Methods: Data were collected from an online survey during the 2012–2013 academic school year. Results: Principle components factor analysis identified 2 factors: reasons to break religious doctrine and reasons to adhere to religious doctrine concerning sexual behavior. The subscales had good internal consistency. Correlations, t tests, and analyses of variance of the subscales with measures of intrinsic and extrinsic religiosity and self-reported sexual behavior and risk provide support for concurrent validity. Conclusions: The ARDSB could be employed as a measure to better understand sexual behavior; it is inexpensive and relatively easy to employ in both research and campus ministry settings.     

应急物流运输网络的出行时间可靠性模型

利用出行时间可靠性对应急物流运输网络状态的随机影响,构建应急物流运输网络的出行时间可靠性模型,通过分层算法计算模型,并对比无环简单路径集在有突发事件影响和无突发事件影响下应急物流运输网络的出行时间可靠性,表明出行时间可靠性越高,应急物流运输网络通行能力也越高;发生突发事件的运输路段的可靠性越低,说明由于突发事件的发生路段的通行能力下降或者被中断,致使应急物流运输网络系统处于一种拥堵状态。数值算例展示了应急物流运输网络的出行时间可靠性模型在应用上的针对性、有效性以及算法的可行性,为运输网络的规划、设计及优化提供依据。     

多级备自投在110kV线变组接线变电站中的应用

从110kV线变组接线变电站的运行实际,及提高电网供电可靠性和运行经济性角度,装设多级备自投装置很有必要。装设该装置需进行完善的功能设计和遵循严格的技术要求。其在变电站中的实际运用证明：多级备自投装置的应用,提高了线变组接线变电站的供电可靠性和运行经济性。     

认知不确定性的谐波齿轮减速器可靠性分析研究

以航天器使用的谐波齿轮减速器为研究对象,在不同信息来源的不确定性处理方法的基础上,研究认知不确定性和客观不确定性同时存在时的概率——非概率可靠性混合模型。建立航天器使用的谐波齿轮减速器的可靠性分析模型,并对模型中的参数进行了灵敏度分析。该方法不用搜索极限状态方程的设计验算点,有较高的鲁棒性。     

LoTTS parent-infant interaction coding scale: Ease of use and reliability in a sample of high-risk mothers and their infants

Reliable and valid measurement of parent-infant interactions is necessary to demonstrate parental skill acquisition, but existing observational coding schemes are too complex for practical use in most human service settings. The LoTTS Parent-Infant Interaction Coding System (LPICS) was developed specifically to require minimal training and to be maximally useful for human service (rather than research) settings. The LPICS consists of three global scales and four behavioral counts. Undergraduate students participated in approximately 9 h of training and coding using the LPICS. Low inter-rater reliability scores initially necessitated modifications to the LPICS in order to enhance reliability. The revised scoring procedure showed more promise, particularly for three behavior counts: talking to the infant (ICC = .86, excellent), touching the infant (ICC = .90, excellent), and smiling at the infant (ICC = .66, good), and one global scale: parental warmth (ICC = .58, fair). The revised LPICS may have utility as a brief, simple, and easy-to-teach observational measure of parent-infant interactions.     

会计信息质量的产权博弈分析——基于相关性与可靠性的均衡视角

会计信息的相关性和可靠性是会计信息质量最重要的两个特征,这两个质量特征的均衡既可以通过产权理论进行分析,也可以利用均衡制度理论进行分析。其实,我国新的会计准则中广泛地引入公允价值的计量模式,本身就很好地说明了相关性和可靠性是可以兼容的,当然这种兼容是建立在会计信息计量和揭示路径不断变革基础之上的,使之更好地满足信息使用者的决策需求。     

复杂结构语言试卷信度的多元概化理论分析——以CET-6数据为例

通过对170名大学生在一套旧式大学英语六级考试客观题上的反应数据的分析,演示了如何用多元概化理论这一工具计算复杂结构语言试卷测试结果的信度系数.结果显示,对于这组学生,总分信度系数达0.921与达0.907,但各部分的差异很大,词汇和语法部分的信度系数最高,为0.802与0.782,听力部分的信度系数次之.为0.769与0.744,阅读理解部分的最低,为0.551与0.782,听力部分的信度系数次之,为0.769与0.744,阅读理解部分的最低,为0.551与0.503.进一步的分析揭示,在这套试卷的70道客观题中,与各自部分不融洽的题目有23个,其中听力部分6道,阅读部分10道,词汇语法部分7道.如果这些不融洽题目上的成绩不记入总成绩,总分和各部分成绩的信度系数都大幅度提高,其中总分信度系数提高到0.937,听力部分提高到0.831,阅读部分提高到0.773,词汇语法部分提高到0.859.在分析的基础上,对语言测试工作者提出了5条积极的建议.     

Flexible‐Duration Extended Warranties with Dynamic Reliability Learning

Frequent technological innovations and price declines adversely affect sales of extended warranties (EWs) as product replacement upon failure becomes an increasingly attractive alternative. To increase sales and profitability, we propose offering flexible‐duration EWs. These warranties can appeal to customers who are uncertain about how long they will keep the product as well as to customers who are uncertain about the product's reliability. Flexibility may be added to existing services in the form of monthly billing with month‐by‐month commitments or by making existing warranties easier to cancel with pro‐rated refunds. This paper studies flexible warranties from perspectives of both customers and the provider under customers' reliability learning. We present a model of customers' optimal coverage decisions and show that customers' optimal coverage policy has a threshold structure under some mild conditions. We further show that flexible warranties can result in higher profits and higher attach rates in a homogeneous market as well as in a heterogeneous market with multiple segments differing in various dimensions.     

关于改进农村低压电网漏电保护方式的探析

本文分析了当前农村低压电网用电管理面临的新的情况 ,提出必须改进现有低压线路敷设方法及漏电保护方式 ,并不断提高漏电保护投运率 ,以适应新形势安全可靠供电的要求。