A measure of regional influence with the analytic network process

The metropolitan region is commonly defined by a socio-spatial network of urban nodes that are linked in territory and function. Such a network is differentiated by size and dominance of the linked nodes, characterized by physical or virtual flows of a wide-ranging variety. The analytic network process (ANP) is a multi-criteria analytic method that measures the influence or dominance of the nodes in a network with feedback. We illustrate how ANP determines county rank as a measure of influence in a metropolitan statistical area (MSA) defined by its interrelated socio-economic and spatial elements qualitatively and quantitatively. We compare the ANP results to similar measures of regional influence in the literature.     

Asymptotics for Autocovariances and Integrated Periodograms for Linear Processes Observed at Lower Frequencies

One of the most frequently used class of processes in time series analysis is the one of linear processes. For many statistical quantities, among them sample autocovariances and sample autocorrelations, central limit theorems are available in the literature. We investigate classical linear processes under a nonstandard observation pattern; namely, we assume that we are only able to observe the linear process at a lower frequency. It is shown that such observation pattern destroys the linear structure of the observations and leads to substantially different asymptotic results for standard statistical quantities. Central limit theorems are given for sample autocovariances and sample autocorrelations as well as more general integrated periodograms and ratio statistics. Moreover, for specific autoregressive processes, the possibilities to estimate the parameters of the underlying autoregression from lower frequency observations are addressed. Finally, we suggest for autoregressions of order 2 a valid bootstrap procedure. A small simulation study demonstrates the performance of the bootstrap proposal for finite sample size.     

基于RFID技术的通用弹药集装单元可视化保障研究

简要介绍了射频识别系统的组成、工作原理、特点和应用现状,分析了我军通用弹药集装单元可视化保障的可行性,建立了可视化保障的总体系统构架,提出了可视化保障的工作流程,为信息化保障提供了一种建设思路和技术指导.     

全过程动态控制的建筑工程进度管理

文章从建筑施工企业的角度,在强调工程进度管理重要性的基础上,提出了全过程动态控制的建筑工程进度管理方法,以系统的、动态的、全面的概念与方法对工程进度进行控制与管理。     

A context-based service matching approach towards functional reliability for industrial systems

ABSTRACT

As service-oriented computing is commonly used in industrial systems to deal with the continually changing business environment, matching processes with existing services becomes one of the most important phases in constructing, integrating and optimizing information systems. The precision of semantic service matching becomes a critical factor in ensuring the correctness of functionalities in system processes. However, the dependability of semantic service matching cannot be warranted in complex contexts. To improve semantic service matching for industrial systems, a context-based semantic service matching approach named ‘Process-Based service MatchMaker’(PBMM) is proposed in this paper. It selects the suitable services for the process from candidate services through taking the dependencies of related services process into consideration.     

浅析互动式教学法在《食品安全性》教学中的应用

相对于传统的单向式教学法而言,互动式教学法不失为一种很好的教学方法,它能在教学过程中充分发挥教师和学生双方的主观能动性,通过师生之间、学生与学生之间、学生与消费群体之间的对话、讨论等多种方式,以达到思想、理论和信息的交流与启发,提高学生的学习热情,注重个性发展,培养学生的综合素质。本文详细论述了互动式教学法在《食品安全性》课程教学中的应用。     

On exact D-optimal designs with 2 two-level factors and n autocorrelated observations

In this paper we consider the exact D-optimal designs for estimation of the unknown parameters in the two factors, each at only two-level, main effects model with autocorrelated errors. The vector of the n random errors in the observed responses is assumed to follow a first-order autoregressive model (AR(1)). The exact D-optimal designs seek the optimal combinations of the design levels as well as the optimal run orders, so that the determinant of the information matrix of BLUEs for the unknown parameters is maximized. Bora-Senta and Moyssiadis (1999) gave some conjectures about the exact D-optimal designs based on their experience of several exhaustive searches. In this paper their conjectures are partially proved to be true.Received: January 2003 / Accepted: October 2003Partially supported by the National Science Council of Taiwan, R.O.C. under grant NSC 91-2115-M-008-013.Supported in part by the National Science Council of Taiwan, R.O.C. under grant NSC 89-2118-M-110-003.     

结果质量与过程质量探析

服务营销专家格罗鲁斯认为，服务质量包括两方面内容：结果质量与过程质量。但对于结果质量与过程质量孰轻孰重，是一个在理论上和实际生活中都未能很好解决的问题。文章在回顾相关理论的基础上，认为判断服务结果质量与过程质量孰轻孰重不能一概而论，而应综合考虑行业、顾客和社会文化等因素，将提升服务质量的努力放在不同的方面。     

我国企业使用过程能力指数情况调查与分析

文章对我国企业使用过程能力指数情况进行了问卷调查。结果显示,我国企业过程能力指数应用中存在的主要问题有：首先,计算过程能力指数的企业不多,且分布不平衡;其次,过程能力指数的可信度不高;再次,不考虑样本的随机性,简单地根据基于样本数据计算的点估计值就给过程的绩效下定论。这些问题的存在,为学者的相关研究提供了视角,也为企业、培训机构、行业协会、有关管理部门开展与过程能力指数有关的活动提供了参考依据。