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1.
This paper assesses a few issues related to the question of finding the so-called important coefficients in an input-output table. Further, these coefficients are located in the corresponding matrices of Canada, the USA and Mexico. Important coefficients are analysed employing graph theoretical tools as well as qualitative input-output concepts and techniques. Empirical results are discussed in terms of the possible implications for trade and regional integration which, presumably, would have deepened in the 1990s.  相似文献   

2.
The aim of this paper is to investigate the evolution of Italian aggregate structural change over the years 1965–85. We use annual input–output (IO) tables in current and constant prices to derive an aggregate index of structural change. We adopt several techniques for such an explorative analysis. First, we borrow from qualitative matrix analysis and graph theory some basic concepts to assess direct and indirect links among sectors, and interrelatedness measures are derived in a straightforward way. However, qualitative analysis of indirect links may be flawed, since it can establish a path that is quantitatively negligible. Then, we turn our attention to a non-standard quantitative index derived from structural path analysis, expressed by a simple function of the input matrix determinant. Since empirical findings indicate a structural break in 1975, we derive another measure of technical change: the dominant eigenvalue. Such an index has several interesting properties but no clear relationship to the circularity process implicit in the Leontief model. Results for constant- and actual-price IO tables are discussed and compared with main macro-economic variables over the sample. Empirical findings indicate a relationship between investment, variability in final demand and aggregate structural change.  相似文献   

3.
A wide range of approaches are available for classifying coefficients according to their importance to an economy. The ‘tolerable limits’ approach is one that has been extensively written about. Nevertheless, it seems unsuitable for assessing the overall importance of a coefficient to an economy, but instead appears to be rather well suited for determining how much a selling sector depends upon its customers. We therefore suggest two alternative approaches for measuring a sector's importance to an economy. The first is an application of the concept of elasticity based on Sherman and Morrison's (1950) formula. The second approach applies linear programming. We compare these various alternatives using the domestic IO tables of eight European countries.  相似文献   

4.
The analysis of structural change with input–output (IO) tables is extended beyond the initial ideas of Chenery and Watanabe, and beyond the recent applications of Feldman et al. and Dewhurst, to embrace a more comprehensive view. With this perspective, change is decomposed into three initial components, and these components are further divided into change initiated within the sector and outside the sector. The analysis is then linked with the notion of a ‘field of influence of change’ to provide a more complete view of the way in which changes penetrate the rest of the economic system. The analytical perspectives are illustrated with applications to a three-sector set of IO tables for the US economy for the period 1948–77.  相似文献   

5.
In this paper, a new method of so-called qualitative input–output analysis is outlined, which is called minimal flow analysis (MFA). It extracts the characteristic production structure given in an input–output table, on the basis of anendogenized threshold value. Formally, this is achieved by the binarization of the entries of different table layers which are reformulated according to the Eulerian sequence. The condensed characteristic structure of the economy is then obtained by means of graph theoretical methods. The new method is able to uncover production structures, even in highly aggregated tables. If applied to a chronological sequence of tables, as shown for German tables 1978–88 in detail, the MFA method can disclose the evoluton of sectoral structures.  相似文献   

6.
课程重要程度是一个至今没有被定义的概念。如何评价课程重要程度 ,是科学规划课程必须解决的难题。各国课程理论却没有深入研究这一问题。近年来 ,部分学者探索用价值工程、系统工程等管理技术分析课程问题 ,并提出了一些评价方法 ,如打分法、排序法等。但由于至今对课程重要程度的概念理解不一 ,评价结果偏差很大 ,实际效果不理想。本文首先对课程重要程度进行定义 ,并在深入分析的基础上 ,提出了主要评价指标及其关系模型。同时为了模型应用方便 ,提出应用模型应注意的主要问题和相关建议 ,以及用模糊数学评判结果的思路和方法。  相似文献   

7.
中国出口结构变革和经济增长的协整分析   总被引:2,自引:0,他引:2  
本文在以前研究的基础上探讨了出口和经济增长的关系,并考虑出口结构变化对经济增长的影响。不仅证实了出口和经济增长相互促进关系,还证实了出口结构的变化也是促进经济增长的有利因素之一。  相似文献   

8.
Kurt Lewin and the Planned Approach to Change: A Re-appraisal   总被引:3,自引:0,他引:3  
abstract The work of Kurt Lewin dominated the theory and practice of change management for over 40 years. However, in the past 20 years, Lewin's approach to change, particularly the 3-Step model, has attracted major criticisms. The key ones are that his work: assumed organizations operate in a stable state; was only suitable for small-scale change projects; ignored organizational power and politics; and was top-down and management-driven. This article seeks to re-appraise Lewin's work and challenge the validity of these views. It begins by describing Lewin's background and beliefs, especially his commitment to resolving social conflict. The article then moves on to examine the main elements of his Planned approach to change: Field Theory; Group Dynamics; Action Research; and the 3-Step model. This is followed by a brief summary of the major developments in the field of organizational change since Lewin's death which, in turn, leads to an examination of the main criticisms levelled at Lewin's work. The article concludes by arguing that rather than being outdated or redundant, Lewin's approach is still relevant to the modern world.  相似文献   

9.
Kop Jansen & ten Raa (1990) established a purely theoretical solution to the problem of selecting a model for the construction of coefficients on the basis of make and use tables. In an axiomatic context, they singled out the so-called commodity technology model as the best one according to some desirable properties. The aim of this paper is to delineate the restrictions on the relevant data sets that ensure fulfilment of the desirable properties by other models used by statistical offices.  相似文献   

10.
王丽  徐永辉 《价值工程》2012,31(20):192-195
文章利用我国2007年投入产出表,计算我国42部门的影响力系数以及感应度系数从而进行产业关联效应分析,确定我国的主导产业,并为我国的产业结构调整提出建议。  相似文献   

11.
Analysts often are interested in learning how much an exchange system has changed over time or how two different exchange systems differ. Identifying structural difference in exchange matrices can be performed using either 'directed' or 'undirected' methods. Directed methods are based on the computation and comparison of column- or row-normalizations of the matrices. The choice of row or column for the normalization implies a specific direction of the exchanges, so that the column-wise normalized results should not be compared to the row-wise normalized results. In this category fall the simple comparison of coefficient matrices and the causative method. Undirected methods do not impose such underlying constraints on exchanges. Hence, I present a set of undirected methods that can be used to compare structural matrices: the biproportional ordinary filter, the biproportional mean filter and the bi-Markovian filter. While doing so, I recall why the bicausative method must be dismissed. I then classify the methods according to their orientation and data needs, and illustrate how the results can differ from one method to the next using French tables for 1980 and 1997.  相似文献   

12.
The main aim of this paper is to analyze the determinants of waste crime in Italy by employing a Structural Equation Approach estimated by the Partial Least Square algorithm (PLS-SEM). By treating waste crime as a latent variable that is directly related to its causes and effects, the PLS-SEM methodology allows us to derive a Waste Crime Index (WCI) at the regional level over the period from 2004 to 2016. This analysis decomposes the overall effects of each cause of WCI from the direct and indirect components. Accordingly, we provide some hints to design more effective policies to prevent waste crime.  相似文献   

13.
14.
Strategic human resource management (SHRM) is the choice, alignment, and integration of an organization's HRM system so its human capital resources most effectively contribute to strategic business objectives. Kaufman's review (this issue) of four books in the field revealed key differences in two areas: the intended audience (academics and general managers versus researchers only) and orientation (the use of field observer and participant observation methods versus ivory tower scientism). Overemphasis on the latter produces research that is relevant only to academics and that is not used in organizations. I argue, as have others, that in addition to rigor, a successful scientific discipline must prove itself relevant to the society in which it is embedded. Hence, the objectives of SHRM should be twofold: to influence academic thinking and conceptualizing, but also to alter the way managers set priorities and make decisions. To do that, researchers have to work directly with managers. The challenge is to create models that reflect a broader view of performance as well as more complete taxonomies of internal and external factors that help shape business and HR strategies. © 2015 Wiley Periodicals, Inc.  相似文献   

15.
研究目标:给出一种估计和检验排序模型中结构变化的方法。研究方法:在排序模型中引入平滑转换函数来描述结构变化,在此基础上构建拉格朗日乘子统计量检验模型中的结构变化,并使用极大似然方法估计模型。研究发现:拉格朗日乘子统计量具有标准的渐近卡方分布,并且该统计量对误差项的不同分布形式具有较好的稳健性;极大似然估计量具有一致性和渐近正态性;应用本文的方法分析居民收入和幸福关系,发现收入对幸福的影响存在显著的非线性结构变化特征,当收入增长超过社会收入分布的80%分位数时,收入对幸福的作用会减弱。研究创新:提出了一种新的并且是比较简便的估计和检验排序模型中结构变化的方法。研究价值:这种新的方法可以广泛应用于主观评价问题中的结构变化分析。  相似文献   

16.
This paper exposes mathematically Charasoff s results on linear production systems. Charasoff developed an algorithm for the iterative calculation of the Leontief inverse, the concepts of basic and non-basic commodities, as well as the Srajfian standard system. This allowed him, given the real wage rate, to calculate the profit rate independently of prices as the ratio of two physically homogeneous magnitudes, and then the prices for an already given profit rate. Therefore, as early as 1910, Charasoff had developed significant concepts of the theory of linear production systems, which long afterwards became more broadly known through the works of Leontief and Sraffa.  相似文献   

17.
Tilanus's ‘mixed’ input–output coefficients are generalized and it is shown that the generalized coefficients stand in a fixed proportion to each other if and only if the technology is described by Hanoch ‘s linear homogeneous constant differences of elasticities of substitution production function.  相似文献   

18.
This paper analyses the factors impacting consumer environmental responsibility using a structural equation modeling approach. Consumer environmental responsibility is the intention of a person to act towards remediation of environmental problems not as an individual user with economic interests but as a responsible citizen having concerns about the social and environmental wellbeing of society. Therefore, awareness of environmental problems and knowledge of remedial alternatives will help individuals to pursue their chosen action and bolster a genuine desire to act and determine the measures for alleviation of environmental challenges. The four dimensions of an environmentally responsible consumer – opinion and beliefs, willingness, awareness, and an ability to act – are analysed. During the analysis, the dimension of ‘ability to move’ is found to be critical, because it has a direct influence on the capacity of the consumer to act. This research is intended to guide policy‐ and decision‐makers of regulatory bodies in understanding consumer behavior towards improving environmental performance index. It also helps organizational managers to make their supply chains green, and competitive, which in turn improves brand image and overall organizational performance. Copyright © 2017 John Wiley & Sons, Ltd and ERP Environment  相似文献   

19.
In this article, edge theorem and boundary theorem, one of the most important results obtained recently in the field of robust control theory, is applied to analyze the economic impact of structural change of production technology in one economic sector, by means of the famous dynamic Leontief input–output model. Two theorems, parallel to edge theorem and boundary theorem, are given in terms of economics in this paper. It is argued that in a sense the complex analysis about the economic impact of production technological changes is equivalent to a one-dimensional computation problem, which is easy to solve. A case study is given in the last section of this paper.  相似文献   

20.
This paper examines the relation between trade patterns and energy consumption in manufacturing industries. An input-output decomposition method is used to decompose the change in industrial energy consumption for Denmark into six components, of which three are trade-related. Trade-induced changes in energy consumption have important implications for issues such as international distribution and regulation of energy consumption and emissions. It is shown that a structural change in foreign trade patterns can increase domestic energy demand. This is contrary, however, to what might be expected for a small industrialized country, which is presumed to export products that intensively use inputs of skilled manpower as well as research and development. Finally, calculations carried out at different levels of aggregation are compared. The findings here demonstrate the importance of large variations in energy intensities among subsectors for the calculation results.  相似文献   

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