A note on the determination of A-optimal type block designs under fixed and mixed effects models

In this paper, we consider the problem of estimating a selected set of contrasts between v treatments using a block design consisting of b blocks of size k. Traditionally, the construction of A-optimal block designs for such situations has been carried out assuming a fixed effects model. In this paper, we show that A-optimal designs constructed under a fixed effects model are robust in the sense that these designs have maximal minimal efficiency when considered among all available designs and under all possible mixed effects models. AMS 1991 subject classifications: Primary 62K05; Secondary 62K10     

Duration dependence testing for speculative bubbles

Prior research has employed a number of methods to test for speculative bubbles in asset prices, including a method based on the concept of duration dependence. This study explores whether duration dependence tests for speculative bubbles are sensitive to specification decisions. Our results question the efficacy of using measures of duration dependence to test for speculative bubbles. In particular, we find that evidence of duration dependence is sensitive to the method of correcting for discrete observation of continuous duration, the use of value-weighted versus equally weighted portfolios, and the use of monthly versus weekly runs of abnormal returns. (JEL C41, G12)     

Economists' Opinions of Economists' Work

A bstract .   Economists' credibility has been waning in recent years. Critics usually cite the profession's preoccupation with abstract reasoning and its focus on seemingly irrelevant topics that hold little interest for individuals outside the discipline. While economic science has enormous potential for improving living standards, the profession's adverse reputation is indicative of a discipline seemingly void of any social contribution. This article presents the results of a recently conducted survey of professional economists. The survey was undertaken to ascertain economists' opinions of their own professional work, including the progress of economic research, its usefulness for society, and factors that determine the publication of that research.     

Perceived conduct and professional ethics among marketing faculty

This paper describes the results of a mail survey to the educator membership of the American Marketing Association. Data were collected regarding beliefs about both the frequency of occurrence and severity of 59 ethical issues facing marketing faculty. The research questions examined include: What unethical practices are believed to most commonly occur? What practices are most severe? How do these beliefs vary by faculty rank and size and type of school? Implications for both the improvement of marketing education and for future research are provided.     

电力施工企业工程项目全过程成本管控策略

在电网体制改革以及国家政策调整的双重背景下,电力建设市场已经逐渐打破以往的格局,这使电力施工企业不得不参与越来越激烈的市场竞争.但是,由于电力施工企业长期采用粗放的管理模式,人员、材料、机械等各个方面的成本均相对较高,导致其在市场竞争中缺乏优势.对于市场经济来说,企业要想获取竞争优势,主要依靠产品功能和成本两个方面,电力施工企业的产品具有显著的同质性特征,所以成本控制成为电力施工企业提升自身竞争力的主要因素.因此,为了提升电力施工企业的市场竞争力,必须根据实际情况有效落实并不断强化成本管控工作.     

浅谈农业科研院所的内部控制

农业科研院所在我国经济和社会发展中发挥着重要作用,建立并完善农业科研院所的内部控制系统,对内部资源的合理配置及推进农业科研工作的有序运行具有重要意义.文章针对农业科研院所的特点,从加强内部控制意识、完善内部控制体系、加深业务和财务融合、提高信息化程度等方面分析了内部控制存在的问题及对策.     

互联网金融时代我国银行财务管理的改革问题研究

对于商业银行来说,财务管理至关重要.尤其在互联网发展迅速的情况下,财务管理要适应形势发展需求,积极推动财务管理的改革与创新,以更好地帮助商业银行发展.互联网金融的快速发展,给商业银行财务管理带来了极大影响,文章对此进行了研究与探讨,在分析互联网金融对商业银行财务管理影响的基础上,找出互联网金融时代商业银行财务管理存在的问题,最后提出改革措施,旨在为促进商业银行财务管理取得更好的成效提供参考与借鉴.     

新预算法对事业单位财会工作的影响及对策探讨

随着我国市场经济体制的日益完善,事业单位对内部财务工作提出了新的要求.近几年,新预算法与现代财务体系的融合备受关注,在事业单位财会人员的创新驱动下,各项工作趋向透明化、优质化发展,因此建立预算平衡机制显得十分重要.基于此,文章立足于事业单位发展的视角,在介绍新预算法基本特点的基础上,重点阐述了其对事业单位财会工作的影响以及优化策略,以期为事业单位财会工作的有效落实提供参考.