食用油质量检测研究进展

食用油质量检测需要按照相关的技术指标,凭借可靠的检测方法进行。基于此,针对食用油质量检测的相关技术指标进行简要介绍,然后从电导法、色谱法及光谱法等方面,逐一阐述食用油质量检测的不同方法及其具体运用,以期给予相关工作者一些参考,能够不断提升食用油质量检测工作效率,保证食用油质量安全。     

基于食用油掺假检测方法分析

文章就现阶段大部分食用油的分类和掺杂油的种类作为切入点,浅要论述食用油掺假的主要检测方法,并提出食用油掺假检测的发展,以期促进我国食用油掺假检测方法的优化和完善。     

基于CNKI数据库的我国管理创新方法研究知识图谱

近年来管理创新、创新方法等逐渐成为学术界关注的热点,众多研究分支方向凸显出跨学科、跨领域的特性。旨在理清管理创新、创新方法、管理方法等研究方向的交织、联系和区别,特别是管理创新方法与管理创新的关系,同时分析10年来我国学术界的研究现状、热点和未来方向。基于共词网络分析的基本思想,运用中心度等手段,利用Ucinet可视化工具绘制了知识图谱,清晰展现其研究现状与发展脉络,以及管理创新、创新方法与管理创新方法的知识联系。     

农业功能区划理论问题思考

农业功能区划是规范我国农业发展空间秩序,实现区域协调发展的重要基础性工作。该文在阐述开展农业功能区划背景意义的基础上,重点探讨了农业功能和农业功能区的内涵特征,农业功能区划的基本准则,农业功能区划的基本方法,农业功能区管理制度设计等农业功能区划理论问题。     

Determinants of executive compensation in privately held firms

We examine what determines executive compensation in privately held firms. Our study is motivated by the fact that most studies in this area rely on data from publicly traded firms. Further, the few studies that are based on data from privately held firms only examine a limited number of determinants of executive compensation. Our findings indicate that the pay‐to‐performance relation is weak. Board size and ownership concentration are the only corporate governance characteristics that explain variations in executive compensation. Executive characteristics like skills, title and educational attainment all explain variations in executive compensation. Contrary to our expectations, we do not find a stronger pay‐to‐performance relation in firms with better designed bonus plans.     

The unsung impact of currency risk on the performance of international real property investment

The paper revisits the currency risk debate to ascertain the statistical significance of currency risk on the return of international real property investment, especially in a period of increased exchange rate volatility. After statistical analyses of the returns of a portfolio of office investments in seven Asia Pacific cities over the 1986 to 2007 period, it was found that currency risk had a statistically significant positive impact on the performance of the portfolio of office investments. This is confirmed by the results of stochastic dominance test. If the results of this study are verified by subsequent studies, and the past reliably presages the future, they would imply that investors holding portfolios of real property investments in the sample markets might not need to be unduly concerned with currency risk.     

偏差修正的预白化HAC法在平稳过程伪回归中的应用

在传统预白化HAC法存在有限样本偏差的基础上,提出将自回归参数偏差修正法和残差调整法来减少预白化HAC法的偏差,从而降低相互独立的平稳过程之间发生伪回归的概率。通过一系列的蒙特卡罗模拟表明：第一修正的预白化HAC法确实减少了伪回归概率,且自回归参数偏差修正法减少的幅度要比残差调整法要大得多;第二相对于同方差情形而言,存在GARCH类异方差的回归中预白化HAC法具有更低的伪回归概率;第三当数据过程是AR(2)过程时,在持久性相同的情况下预白化HAC法的伪回归概率要低于相应的AR(1)数据过程。但在高于2阶的自回归数据过程的回归中,残差调整的预白化HAC的伪回归概率具有优势。在样本容量较大(T≥500)时自回归参数修正的预白化HAC法的伪回归概率很接近检验水平,但残差调整的预白化HAC法具有微弱的向下检验水平扭曲.     

中国出口贸易的技术结构及其变迁:1980-2003

本文旨在构建一套测度出口贸易技术结构的方法,并在SITC三位码分类水平下,从国际比较的角度,分析改革开放以来中国出口贸易的技术结构及其变迁。第一,本文建立了测度产品技术含量的一个指标,进而提出一套分析经济体出口贸易的技术结构的新方法;第二,利用本文提出的分析工具,通过国际比较,从多个方面分析了1980—2003年中国出口贸易的技术结构,结果表明:改革开放以来,中国出口贸易的整体水平得到了很大提高,但仅表现出微弱的向世界水平收敛的趋势;中国出口贸易的技术结构高度没有显著提高,但在不同时期表现出不同的趋势;中国出口贸易的技术结构分布发生了与众不同的重大变化。     

COMMERCIAL PROPERTY PRICE INDEXES AND THE SYSTEM OF NATIONAL ACCOUNTS

This paper studies the problems associated with the construction of price indexes for commercial properties that could be used in the System of National Accounts (SNA). Property price indexes are required for the stocks of commercial properties in the Balance Sheets of the country. Related service price indexes for the land and structure input components of a commercial property are required in the Production Accounts of the country if the Multifactor Productivity of the Commercial Property Industry is calculated as part of the SNA. The paper reviews existing methods for constructing an overall Commercial Property Price Index (CPPI) and concludes that most methods are biased (due to their neglect of depreciation) and more importantly, not able to provide separate land and structure subindexes. A class of hedonic regression models that is not subject to these problems is discussed.     

An Italian forerunner of modern cost allocation concepts: Lorenzo De Minico and the logic of the 'flows of services'

This article provides an analysis of the thoughts of an Italian academic who lived in the first half of the twentieth century, Lorenzo De Minico, in particular it regards his approach to the allocation of common costs. De Minico's main concern was with the conventional, subjective allocation methods proposed by Italian practitioners and academics of his time. He valiantly searched for a methodological approach based on using causality as the basis for linking costs to cost objects. The most interesting finding of De Minico was the concept of 'flows of services' and his commitment to offering a convincing answer to the problem of general or common cost apportionment that went beyond 'traditional' criteria. De Minico's 'flows of services' referred to the outputs of resources consumed in indirect services. These indirect costs can be considered easily 'directly attributable' only if it is possible to measure the connected 'flows of services'. The article shows that the concept developed by De Minico in early twentieth century of Italy confirms the idea that some theoretical frameworks for a causal allocation of common costs were in existence many decades before information technology made such systems a practical proposition.