Diversification strategy,profit performance and the entropy measure

Several industrial organization studies, using diversification index measures, examined corporate diversification and economic performance and failed to find any significant relationship between them. Rumelt and other strategy researchers used a semisubjective classification scheme and uncovered a systematic relationship between diversification strategies and performance. This study combines the strengths of the index approach, namely, simplicity, objectivity and replicability, with the essential richness of Rumelt's methodology. Using the Jacquemin-Berry entropy measure of diversification and the line-of-business data, this study finds that firms with predominantly related diversification show significantly better profit growth than firms with predominantly unrelated diversification.     

A methodological note on diversity measurement

This research addresses the question, do categorical and continuous measures capture the same construct of diversity? Using analysis of variance, cluster analysis, and discriminant analysis, we investigated whether continuous measures (entropy and product count) differentiate between diversification categories, whether continuous measures converted to categories and subjectively assigned categories classified companies similarly, and whether continuous and categorical measures predicted similar diversity–performance relationships. We concluded that the techniques were associated but did not yield the same performance predictions. For researchers investigating diversity–performance relationships, choice of measurement technique will influence research results. Our research results suggest that attempts to combine categorical and continuous techniques as a way to overcome the limitations of both methods is not appropriate.     

The measurement of corporate portfolio strategy: analysis of the content validity of related diversification indexes

Measures developed for the analysis of corporate diversification have become fundamental to a broad range of strategy research. This paper examines the content validity of the two most widely used continuous measures of related diversification—the related component of the entropy index and the concentric index—and raises fundamental questions about their validity as indicators of portfolio relatedness. These questions are not driven by the use of SIC data for estimation of the indexes; they involve validity problems intrinsic to the construction of the measures. The related component of entropy and the concentric index are sensitive to features of corporate portfolio composition that may not be directly linked to portfolio relatedness. These sensitivities can create important ambiguities in strategy research. Copyright © 2002 John Wiley & Sons, Ltd.     

MARKETS VS. MANAGEMENT: WHAT ‘DRIVES’ PROFITABILITY?

This study addresses the issue of the relative degree of variance in ROA accounted for by industry, corporate, and SBU effects while controlling for the business cycle and the interaction between the business cycle and industry. Two key articles, Schmalensee (1985) and Rumelt (1991), are discussed in detail. Research results on a recent data base (COMPUSTAT), using variance components analysis (VARCOMP) are presented that not only confirm most of the Rumelt (1991) findings, but also suggest the existence of a corporate effect, heretofore undetected.     

Corporate diversity and economic performance: The impact of market specialization

This papers introduces a market-based typology of corporate strategy, which builds on previous typologies (Rumelt 1974, 1982). We argue that, because different markets require different skills for success, firms which concentrate in one market area (consumer or industrial), at given levels of diversification, should achieve superior performance. Empirical tests with a sample of manufacturing firms support this proposed relationship between diversification strategy and financial performance.     

Construct validity of some unweighted product-count diversification measures

Construct validities are assessed for three simple-to-compute, unweighted, SIC-based continuous diversification measures and a recently proposed two-dimensional, SIC-based categorical diversification measure. Two of the three continuous measures are found to correspond strongly to Rumelt's categorical measures, suggesting that these two objective and easy-to-calculate measures are better suited for large sample, strategy research than has previously been assumed. No support is found for the two-dimensional measure.     

What does a small corporate effect mean? A variance components simulation of corporate and business effects

In a widely cited paper, Rumelt (1991) presents estimates of the relative influence of corporate, business unit, and other influences on business unit profitability and finds the corporation explains almost none of the variability in business unit profitability. Using a Monte Carlo simulation, we examine the relation of variance component magnitudes to other indicators of the importance of a particular effect. Our results demonstrate that variance components can be an extremely nonlinear indicator of importance. We also question whether Rumelt's corporate effect represents the possible contributions of corporate strategy to business unit performance. This addresses a puzzle raised by Rumelt (1991) concerning the small effect of corporations in explaining performance, and suggests that Rumelt's findings should not be seen as demonstrating the insignificance of corporate strategy. © 1997 John Wiley & Sons, Ltd.     

基于模糊信息熵的港口物流系统评估分析

综合分析了港口物流系统的研究现状,从物流系统角度构建多层次港口物流系统评价指标体系,结合信息熵和模糊综合评价方法,建立了基于模糊信息熵的港口物流系统评估方法。此方法综合了主客观权重,克服了主观因素的影响。最后,选定沿海16个港口的物流系统进行了实证分析,结果表明此方法具有可操作性,为港口企业衡量其物流发展水平提供了参考依据。     

Reconceptualizing professional service firm innovation capability: Scale development

Building on capability theory, this paper presents a reconceptualization of the innovation capability construct within a knowledge-intensive service context, specifically, professional service firms (PSFs). Employing a rigorous multi-stage scale development process we interviewed 37 participants and surveyed 463 respondents across a wide range of PSFs including lawyers, accountants, consulting engineers and management consultants. The results of exploratory and confirmatory factor analyses highlight the multi-dimensional nature of innovation capability within this context. Three dimensions were identified: client-focused, marketing-focused, and technology-focused innovation capability. We provide evidence of face validity, content validity, convergent and discriminant validity, nomological validity and reliability of our scale. Our scale offers a new way to measure innovation capability within PSFs and highlights the need to move beyond the narrow manufacturing mind-set focus of prior innovation research. Implications for theory and practice are discussed.     

HOW MUCH DOES INDUSTRY MATTER,REALLY?

In this paper, we examine the importance of year, industry, corporate-parent, and business-specific effects on the profitability of U.S. public corporations within specific 4-digit SIC categories. Our results indicate that year, industry, corporate-parent, and business-specific effects account for 2 percent, 19 percent, 4 percent, and 32 percent, respectively, of the aggregate variance in profitability. We also find that the importance of the effects differs substantially across broad economic sectors. Industry effects account for a smaller portion of profit variance in manufacturing but a larger portion in lodging/entertainment, services, wholesale/retail trade, and transportation. Across all sectors we find a negative covariance between corporate-parent and industry effects. A detailed analysis suggests that industry, corporate-parent, and business-specific effects are related in complex ways. © 1997 by John Wiley & Sons, Ltd.     

科技成果转化绩效评价指标体系的比较分析

首先确定与科技成果转化绩效评价高度相关的56篇影响力大的样本文献,然后对这些文献采用文献计量法和比较分析法从科技成果转化绩效评价指标体系的设计原则、层次设置、底层评价指标的个数、不同被评价对象的评价指标选取、评价指标权重确定方法分别进行对比分析。结果表明,在设计科技成果转化绩效评价指标体系时遵循最多的3项原则分别是可操作性、科学性和系统性;2层的评价指标体系采用的文献篇数最高（占比64.29%）;底层评价指标个数为13～17的文献数量之和为17,相对最多（占比30.36%）;科技成果转化绩效评价方面在微观、中观、宏观3个层面上存在着失衡现象,微观层面、中观层面、宏观层面的占比分别为62.5%、33.93%、3.57%;主观赋权法和客观赋权法的使用频次接近,使用的具体赋权法的占比由高到低排序分别是层次分析法（占比33.93%）、数据包络分析法（占比17.86%）、专家调查法（占比10.7%）、主成分分析法（占比8.92%）、熵值法（占比8.92%）。     

Diversification strategies,business cycles and economic performance

Two major diversification strategies of firms are examined: diversification into related businesses and diversification into unrelated businesses. The first strategy attempts to exploit operating synergies. In the second, the firm attempts to gain financial benefits from its ability to increase leverage due to a greater stability of cash flows. The study utilizes a large sample affirms to assess empirically the benefits and costs of these two diversification strategies by developing a new measure of diversification across business cycles and economic sectors. This new measure is compared with Berry—Herfindahl type measures of total diversification and recent measures of diversification into related businesses. The results indicate that pure financial diversification is associated with (a) more stable cash flows, i.e. lower operating risk; (b) increased levels of leverage; and (c) lower profitability. These observations are in accord with the theory. We also reaffirm that firms which diversify into related businesses have, on the average, higher profitability than non-diversified firms, although these results are not always statistically significant.     

Development and Validation of a Forced Choice Emotional Intelligence Measure for Chinese Respondents in Hong Kong

Emotional intelligence (EI) has been an emerging topic for psychological, educational, and management researchers and consultants in recent years. Unfortunately, there have been relatively few empirical studies on EI conducted with scientific rigor, especially in Asia. A recent study clarified the definition of EI as a set of mental abilities related to emotions, and developed a self-report EI measure by demonstrating the relationships between EI and life satisfaction, job performance, and job satisfaction for Chinese respondents. To facilitate future EI research and EI-related human resource practices in Asia, we develop an alternative EI measure in this series of four studies using forced choice items. Scenarios with alternative responses showing different levels of EI were generated in the first study, and 20 items were selected empirically. In the second study, pairs of abilities were generated and 20 EI items were paired with various ability facets. In the third study, we examined the social desirability of the 40 items developed in the first two studies. In the fourth study, these 40 EI items were cross-validated. The results indicated that this forced choice EI-scale had acceptable convergent, discriminant and predictive validity using life satisfaction, job performance, and job satisfaction as criterion variables. We discussed the implications of our findings in the conclusion.     

Technological diversity,related diversification,and firm performance

Previous findings that related diversification creates value have been called into question over concerns about methodology and measures. Reviewing existing theory to consider how a firm's knowledge base interacts with its product market activity, I address several of these concerns by creating a measure of technological diversity based on citation‐weighted patents. The measure indicates a firm's opportunity for corporate diversification based on economies of scope in valuable knowledge assets, is defined for both single‐ and multibusiness firms, and is not correlated with more fundamental aspects of diversification, such as the number of businesses in the corporate portfolio. Evidence from a large sample of firms shows the positive relationship between diversification based on technological diversity and market‐based measures of performance, controlling for R&D intensity and capital intensity as further indicators of the type of assets underlying diversification. Results hold when controlling for the endogeneity of diversification and performance in a cross‐sectional sample or when controlling for unobserved factors using panel data. Copyright © 2006 John Wiley & Sons, Ltd.     

The performance implications of intra‐ and inter‐regional geographic diversification

Engaging the debate regarding the appropriate level of geographic diversification for multinational enterprises (MNEs), we examine a critical, yet unresolved, question: How is performance impacted by the MNE's level of intra‐ and inter‐regional diversification versus the total level of geographic diversification? Using data from 123 U.S.‐based MNEs over a seven‐year period and leveraging both sales‐based and subsidiary‐based measures for diversification, we find that performance increases at an increasingly higher rate as firms concentrate more heavily on intra‐regional diversification. Regarding inter‐regional diversification and total geographic diversification, we find inverted‐U relationships to exist between firm performance and the level of geographic diversification. Different from recent research on multinationality, our robustness checks indicate no evidence of a sigmoidal relationship between the degree of regional diversification and performance. Copyright © 2010 John Wiley & Sons, Ltd.     

Why do Chinese employees build supervisor-subordinate <Emphasis Type="Italic">guanxi</Emphasis>? A motivational analysis

Supervisor-subordinate guanxi is an informal leader-member relationship that is of utmost importance in Chinese organizations. This paper explores Chinese employees’ motives for building supervisor-subordinate guanxi through two studies. Study 1 develops an indigenous scale of motives for supervisor-subordinate guanxi. Four motive types (i.e., career advancement, team concern, personal life, and impression management) are identified, and the scale’s convergent and discriminant validity is established. Study 2 examines the predictive power of these motive types. The results indicate that they, as a whole, account for unique variances in supervisor-subordinate guanxi. Furthermore, as single motive types, they have unequal impacts on this relationship and its dimensions. This research enhances understanding of what underlies supervisor-subordinate guanxi from a motivational perspective and has implications for Chinese indigenous research of guanxi.     

International Diversification and Performance: Evidence from Singapore

This study focuses on how international diversification affects a firm in terms of multiple performance measures (accounting-based, market-based, and intangible value creation). The study is unique as it uses segment data made available only recently, which enables the examination of both product and international diversification with performance. The period studied coincided with Singapore firms performance during the Asian Financial Crisis. In contrast to previous studies on Singapore, our results show that product diversification is negatively correlated to all measures of performance, while international market diversification is positively correlated. We attribute the difference to the time period which covers both upswings and downturns of the economy, unlike previous studies which considered only the former. Other control measures were incorporated; firm size is highly significant in explaining all measures of performance but not so for firm age, leverage, risk and industry. For top managers, we suggest that regardless of economic climate, the dominant diversification strategy is to take a focused approach to product diversification, but a broad approach to international diversification.Dr. Er and Dr. Kwok are assistant professors in the Department of Finance & Accounting, National University of Singapore (NUS). Mr Lin recently graduated with a B.B.A. honours (1st class) degree from NUS.     

Using simulated mergers to evaluate corporate diversification strategies

This study suggests that simulated mergers can be used to help evaluate the effects of diversification on corporate performance. The results, which are consistent with a risk-reduction motive for conglomerate diversification, imply that conglomerate strategies focused on fewer and larger units may be advantageous in terms of certain measures of risk and return. Forecast error is used here to measure strategic risk, and return on equity is used to measure return.     

Survey measures of first‐ and second‐order competences

Research summary : This study tests and validates survey measures of first‐ and second‐order competences in order to foster cumulative empirical research and theoretical refinement in the area of dynamic capabilities. Data from two informants and two time periods for a sample of publicly traded U.S. manufacturing firms are used to examine the convergent, discriminant, and nomological validity, and the reliability of scales to measure various levels and types of competences. Findings suggest that customer competence, technological competence, marketing competence, and R&D competence are related but distinct dimensions, evidencing strong validity and reliability. Qualifying this empirical support, it was found that items regarding manufacturing operations and facilities seemed to measure aspects unrelated to the focal competences, and that marketing competence had no relation to future market‐resource accumulation. Managerial summary : This study enhances understanding and measurement of dynamic capabilities, in particular, marketing and R&D second‐order competences. Marketing and R&D second‐order competences are a firm's ability to build new competences to serve new markets or use new technologies, respectively. The ability of a firm to add new market‐related resources (such as brands and distribution channels) and technological resources (such as patents and engineering skills) helps it cope with environmental change and grow in new directions. For firms in stable environments, being able to serve new markets and use new technologies provide opportunities for growth. For firms in turbulent environments, these skills are a matter of survival. Using data collected from publicly traded U.S. manufacturing firms, this study tests and validates questions that can be asked in questionnaires presented to management. It finds that even if a firm has strong skills in serving current customers and great technology, it may not be able to go after new markets or technologies. The survey questions tested here could be used not only by other researchers, but also by practitioners. Managers, management consultants, and industry association advisors could use the scales as diagnostic instruments or to perform benchmarking. Copyright © 2015 John Wiley & Sons, Ltd.     

Local Economic Base, Geographic Diversification, and Risk Management of Mortgage Portfolios

Variability of local economic conditions underlie, in part, the default and prepayment risks of mortgages originated in a metropolitan area. In this study we examine the benefits of diversifying across metropolitan areas for reducing these risks. Employment data for the thirty largest metropolitan areas in the United States, divided into eight industry groups, are analyzed with the aid of factor and principal component analysis to determine if the variances of employment changes across the thirty areas are independent. Independence is investigated to assess the potential for diversification. Mean-variance portfolio analysis is then used to measure the gains from geographic diversification vis-a-vis a set of several alternative strategies for diversification. We conclude that geographic diversification is an important mortgage portfolio objective and that mean-variance strategies outperform the alternative strategies tested here.