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81.
基于在用仪器设备完好率,结合检测和校准实验室设备完好率计算统计方法的改进,提出对影响仪器设备完好率的相关要素及量化考核模型,对指导检测和校准实验室的仪器设备管理工作有实际指导意义。 相似文献
82.
Abstract ‘Client focus’ seems like a counter-intuitive notion for regulatory agencies, whose job is to compel people to comply with government requirements. Yet it is becoming the catchphrase for many regulatory authorities. This article puts forward an argument, based on social exchange and regulatory theory, that a client-focused approach is not only compatible with a regulatory role, but also actually facilitates it. It recognizes that most people's propensity to comply is a function of factors other than the fear of punishment, such as their intrinsic or normative motivations and their ability to do what is required. It also assists in delineation and understanding of the proportion of regulatees who opportunistically avoid their obligations. The article advances a broader model of social exchange between regulators and regulatees. 相似文献
83.
This paper explores the role of trade integration—or openness—for monetary policy transmission in a medium-scale new Keynesian model. Allowing for strategic complementarities in price setting, we highlight a new dimension of the exchange rate channel by which monetary policy directly impacts domestic inflation: a monetary contraction which appreciates the exchange rate lowers the local currency price of imported goods; this, in turn, induces domestic producers to lower their prices too. We pin down key parameters of the model by matching impulse responses obtained from a vector autoregression on time series for the US relative to the euro area. Our estimation procedure yields plausible parameter values and suggests a strong role for strategic complementarities. Counterfactual simulations show that openness alters monetary transmission significantly. While the contractionary effect of a monetary policy shock on inflation and output tends to increase in openness, we find that monetary policy's control over inflation increases, as the output decline which is necessary to bring about a given reduction of inflation is smaller in more open economies. 相似文献
84.
改革开放以来,随着经济的发展,我国的离婚率持高不下。目前,越来越多的人关心中国离婚率的相关问题。文章基于VAR模型,采用协整分析,格兰杰因果分析,脉冲响应函数和方差分析法,发现离婚率与GDP增长率存在长期的正向协整关系,其长期弹性为0.11,GDP增长率是离婚率的单向格兰杰原因。脉冲响应和方差分解表明,GDP增长率对离婚率有影响但影响不太大,而离婚率对GDP增长率基本无影响。 相似文献
85.
汽车发动机预装线装配平衡改进研究 总被引:1,自引:0,他引:1
为提高已经投产的汽车总装生产线的生产平衡率,研究发动机生产线生产平衡改进研究。以现有生产节拍和各个工位操作工时作为基础,运用生产线平衡的基本概念,对现有生产线进行优化。首先确定优化目标,通过工序同期化优化,减少生产岗位,从而提高部分岗位负荷,提高生产平衡率,为企业解决实际问题,节约人力、场地等资源。 相似文献
86.
为了构建数字化校园的统一数据交换与共享平台,论文提出了一种按照统一数据标准、数据资源使用调查、构建公共数据库、安装元数据管理系统和实现数据交换五个步骤实现统一数据交换与共享平台的解决方案。 相似文献
87.
88.
超增长的中国储蓄率研究 总被引:2,自引:0,他引:2
我国储蓄的持续超常增长已经引起政府当局及学者们的广泛关注。本文通过对我国影响储蓄率的因素进行分析,从一个侧面对这一异常现象产生进行了阐述。最后针对分析结果,提出了若干政策建议。 相似文献
89.
The proportional odds model is the most widely used model when the response has ordered categories. In the case of high‐dimensional predictor structure, the common maximum likelihood approach typically fails when all predictors are included. A boosting technique pomBoost is proposed to fit the model by implicitly selecting the influential predictors. The approach distinguishes between metric and categorical predictors. In the case of categorical predictors, where each predictor relates to a set of parameters, the objective is to select simultaneously all the associated parameters. In addition, the approach distinguishes between nominal and ordinal predictors. In the case of ordinal predictors, the proposed technique uses the ordering of the ordinal predictors by penalizing the difference between the parameters of adjacent categories. The technique has also a provision to consider some mandatory predictors (if any) that must be part of the final sparse model. The performance of the proposed boosting algorithm is evaluated in a simulation study and applications with respect to mean squared error and prediction error. Hit rates and false alarm rates are used to judge the performance of pomBoost for selection of the relevant predictors. 相似文献
90.
In the context of information theory, measure of uncertainty in past lifetime distribution has been proposed by Di Crescenzo and Longobardi (J Appl Probab 39:434–440, 2002). In this paper, we study some ordering and aging properties in terms of past entropy (based on past lifetime) and develop some characterization results. Some discrete distribution results are also addressed here. 相似文献