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31.
Strategic management scholars have long emphasized the importance of innovation for a firm's competitive advantage and performance. However, the current state of knowledge about the strategic management of innovation is characterized by conflicting theoretical predictions, persisting knowledge gaps and theoretical inconsistencies. Adopting a ‘systematic’ approach to reviewing the literature, this paper combines different quantitative methods – co‐word analysis, cluster analysis and frequency analysis – to review 342 articles on the strategic management of innovation published in seven journals from 1992 to 2010. On the basis of these analyses, suggestions are developed for future research which could help to promote future theory development and provide relevant material for policy decisions that managers and executives have to make when they manage innovation. 相似文献
32.
Utz Schäffer Jan-Philipp Lüdtke Diedrich Bremer Matthias Häußler 《Zeitschrift für Betriebswirtschaft》2012,82(1):47-73
This paper investigates the influence of accounting standards on systematic earnings understatement. To isolate the effect of reporting regulations from those of other institutional drivers of earnings management, Holthausen (2003) proposes analyzing reporting practices in a country undergoing a transition in accounting standards. We respond to this call by analyzing earnings management practices of large German-listed companies before and after their transitions from German GAAP to IFRS. Specifically, we focus on Big Bath behavior following Chief Financial Officer turnovers between 1999 and 2006. Our findings provide evidence of the effect of accounting standards on the existence of this particular earnings understatement pattern. However, while we detect Big Bath behavior for our sample of German GAAP firms, we find no such indication for those firms reporting under IFRS. Controlling for alternative explanations such as self-selection bias does not change our findings. We conclude that accounting standards seem to have a considerable influence on earnings management behavior, independent of managers’ and auditors’ incentives. 相似文献
33.
Matthias Doepke 《Journal of population economics》2005,18(2):337-366
I compare the predictions of three variants of the altruistic parent model of Barro and Becker for the relationship between
child mortality and fertility. In the baseline model fertility choice is continuous, and there is no uncertainty over the
number of surviving children. The baseline model is contrasted to an extension with discrete fertility choice and stochastic
mortality and a setup with sequential fertility choice. The quantitative predictions of the models are remarkably similar.
While in each model the total fertility rate falls as child mortality declines, the number of surviving children increases.
The results suggest that factors other than declining infant and child mortality are responsible for the large decline in
net reproduction rates observed in industrialized countries over the last century.
Financial support by the National Science Foundation (grant SES-0217051) and the UCLA Academic Senate is gratefully acknowledged.
I thank Sebnem Kalemli-Oczan, Rodrigo Soares, and two anonymous referees for comments that helped to substantially improve
the paper. Olesya Baker and Ilya Berger provided excellent research assistance.
Responsible editor: Junsen Zhang. 相似文献
34.
Axel Borrmann Matthias Busse 《Development policy review : the journal of the Overseas Development Institute》2007,25(4):403-416
The Economic Partnership Agreements between the African, Caribbean and Pacific countries and the European Union should serve as an opportunity to accelerate ACP global and regional trade integration and as an important tool for development and the eradication of poverty. There are, however, a number of preconditions. This article argues that institutional quality plays a key role in successful trade liberalisation. In fact, only countries with high‐quality institutions, partly in the form of good government regulation, are likely to benefit from trade. Unfortunately, the vast majority of African countries have excessive regulation that hinders them from taking advantage of trade. The necessary reforms to resolve this problem pose significant challenges, implying major risks for these countries in the EPA process. 相似文献
35.
Mark Neumann 《Symbolic Interaction》1993,16(3):201-235
This article is an enthnographic account of an alternative bus tour through the American Southwest with the Green Tortoise travel company. In a narrative reconstruction which integrates participant-observation fieldnotes and recollections from other tour participants, I describe and analyze how a leisure journey provides a context for experimenting with alternative forms of social organization. As a mode of alternative travel, the Green Tortoise tour self-consciously situates itself in opposition to the organizing structures typically associated with more conventional forms of mass tourism. The tour described here is modeled on an idealized image of community that emphasizes a notion of resistance to mass tourism through performance, symbol, and spectacle, and centers around the pursuit of lifestyle and identity. 相似文献
36.
37.
Abstract In one-parameter (θ) families, we were not aware of explicit hypothesis testing scenarios where maximal invariant statistics failed to distinguish the models. We start with a concrete example (Sec. 2.2) to highlight such a hypothesis testing problem involving markedly different models. In this problem, because of the absence of a nontrivial uniformly most powerful invariant (UMPI) test, we briefly suggest two approaches to test the hypothesis. The first resolution (Sec. 3.1) is frequentist in nature. It utilizes a weight function on the parameter space and compares “average” distributions obtained under the null and alternative models in the sense of Wald (1947 1950). In contrast, a fully Bayesian resolution (Sec. 3.2) is also included. The note ends with a series of other interesting examples involving one-parameter families where maximal invariant statistics fail to distinguish the hypothesized models. The examples include easy-to-construct families of probability models involving only a single location or scale parameter θ. 相似文献
38.
Matthias Kohl 《Statistics》2013,47(4):473-488
Bednarski and Müller [Optimal bounded influence regression and scale M-estimators in the context of experimental design, Statistics 35 (2001), pp. 349–369] introduced a class of bounded influence M estimates for the simultaneous estimation of regression and scale in the linear model with normal errors by solving the corresponding normal location and scale problem at each design point. This limits the proposal to regressor distributions with finite support. Based on their approach, we propose a slightly extended class of M estimates that is not restricted to finite support and is numerically easier to handle. Moreover, we employ the even more general class of asymptotically linear (AL) estimators which, in addition, is not restricted to normal errors. The superiority of AL estimates is demonstrated by numerical comparisons of the maximum asymptotic mean-squared error over infinitesimal contamination neighbourhoods. 相似文献
39.
40.
In this note, we report a dramatic improvement in the computational efficiency of semiparametric generalized least squares(SGLS) estimation. Computation of SGLS estimates no longer presents serious problems with data sets of moderate size. We also correct a numerical error in the standard errors of the SGLS estimates reported in our recent paper in this journal (Horowitz and Neumann, 1987). The corrected standard errors of SGLS are comparable to those we reported for quantile estimates. 相似文献