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排序方式: 共有89条查询结果,搜索用时 46 毫秒
51.
Martin Rohleder Hendrik Tentesch Rene Weh Marco Wilkens 《Review of Financial Economics》2023,41(1):23-42
After analyzing portfolio differences between separate account-mutual fund twins, we find that dissimilar “fraternal twins” show significantly lower joint performance than “identical twins.” This finding is consistent with fraternal twins competing for the limited attention of a manager while identical twins mutually profit. Furthermore, the effect is stronger for separate accounts, which is probably due to investors having the opportunity to influence managers’ investment decisions according to their preferences. These results are independent of differences in known investment constraints. However, the findings may be driven by separate account investors’ preferences for higher liquidity and lower idiosyncratic risk. 相似文献
52.
Annari de Waal Reneé van Eyden 《The South African journal of economics. Suid-afrikaanse tydskrif vir ekonomie》2014,82(1):117-140
We develop a structural cointegrated vector autoregressive (VAR) model with weakly exogenous foreign variables, known as an augmented VECM or VECX*, suitable for a small open economy like South Africa. This model is novel for South Africa in two ways: it is the first VECX* developed to analyse monetary policy and the first model that uses time‐varying trade weights to create the foreign series. We impose three significant long‐run relations (augmented purchasing power parity, uncovered interest parity and Fisher parity) to investigate the effect of a monetary policy shock on inflation. The results suggest the effective transmission of monetary policy. 相似文献
53.
Thabo M. Mokoena Rangan Gupta Reneé Van Eyden 《The South African journal of economics. Suid-afrikaanse tydskrif vir ekonomie》2009,77(4):531-537
This paper utilises “a class test for fractional integration” associated with the seminal contribution of Hinich and Chong to appraise the possibility that Southern African Development Community (SADC) real exchange rates can be treated as long memory processes. The justification for considering fractional integration is that the general failure to reject the unit‐root hypothesis in real exchange rates is caused by the restrictiveness of standard unit‐root tests regarding admissible low‐frequency dynamic behaviour. The paper presents evidence that, except for South Africa, none of the SADC real exchange rates are fractionally integrated. However, the results are found to be sensitive to the size of the sample. 相似文献
54.
This article introduces a conceptual model for understanding how young women perceive the current challenges of leadership. Numerous studies and articles claim that women are better educated, more experienced, and better suited for leadership positions than ever before. This news is encouraging, but the number of women in leadership roles in American politics gained less than one percentage point this year, hovering around 22%, while in the private sector many organizations have yet to place a single woman on their board. The proportion of women on corporate boards is 16%, with no evidence that this is likely to grow in the near future. What is even more discouraging is that these low numbers are not significantly higher than those in many developing nations. It is evident that women are underrepresented in top leadership positions and must intensely challenge the status quo. This article presents results of a study based on in‐depth interviews with college women who are seeking paths to leadership. The researchers employ qualitative analytical research tools to explore the complexities of the phenomena. The findings bring a greater understanding of the antecedents and consequences that lie beneath the challenges affecting the next generation of women leaders. 相似文献
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Start-ups have a high need for resources yet face significant risks when forming partnerships with incumbents to access those resources. We propose that a partnership strategy based on relational pluralism, forming multiplex and multifaceted ties with partners, can mitigate these risks. Such ties offer the start-up increased legitimacy and a relational safeguard against resource misappropriation by more powerful partners. However, we propose that there is a limit to the effectiveness of relational pluralism. Its effect is weakened when the start-up becomes entirely dependent on a small set of partners, or when an additional tie yields resources that are redundant. We argue that the start-up only benefits when the gains from relational safeguarding and legitimacy outweigh the costs of dependence and redundancy. We empirically observe the co-evolution of start-ups’ interlocking directorate and strategic alliance networks in the Australian mining industry over a 10-year period. Our results show that start-ups that engage in relational pluralism perform better than both start-ups that form no alliances and start-ups that form stand-alone alliances. Having a very small portfolio of partners or one that skews heavily toward local partners, however, indeed limits the effectiveness of relational pluralism. Intriguingly, we also find that the temporal sequencing of relational pluralism matters. One of our central findings is that the best performing start-ups first form board interlocks with promising partners and add a strategic alliance later. This offers a rare glance at the temporal sequencing in which peripheral start-ups can gain exceptional performance through partnership formation. 相似文献
58.
Christopher L. Erickson Sarosh Kuruvilla Rene E. Ofreneo Maria Asuncion Ortiz 《劳资关系》2003,42(3):368-395
We seek to describe recent developments in employment relations in the Philippines, placing these developments in the contexts of the distinctive elements of the Philippine social/political/industrial relations systems as well as the ongoing trade-based and functional integration of international markets and the recent regional economic crisis. We find that while some firms are pursuing functional flexibility and more cooperative employment relations, the logic of competition primarily has induced firms to adopt practices that promote numerical flexibility such that a core-periphery workforce is created. We argue that the labor movement in the Philippines has been hampered in its efforts to effectively counter employer strategies by its low density and fragmentation and an unfavorable public-policy environment; Philippine labor unions have, however, made some recent gains in organizing and interunion coordination. We also argue that the government has not done enough to counteract the negative effects of market integration on workers nor to evolve th e Philippines into a higher-value-added exporter. 相似文献
59.
Bart Leten Rene Belderbos Bart Van Looy 《Journal of Product Innovation Management》2007,24(6):567-579
Technological diversification at the firm level (i.e., the expansion of a firm's technology base into a wide range of technology fields) is found to be a prevailing phenomenon in all three major industrialized regions,—the United States, Europe, and Japan—prompting the term multitechnology corporation. Whereas previous studies have provided insights into the composition of technology portfolios of multitechnology firms, little is known about the relationship between technological diversification and firms' technological performance. Against a backdrop of the technology and innovation management literature, the present article investigates the relationship between technological diversification and technological performance, taking into account the moderating role of technological coherence in firms' technology portfolios. Hereby, technological coherence is defined as the degree to which technologies in a technology portfolio are technologically related. To measure the technological coherence of portfolios, a measure of technological relatedness of technology fields is constructed based on patent citation patterns found in 450,000 European Patent Office (EPO) patent grants. Two hypotheses are presented here: (1) Technological diversification has an inverted U‐shaped relationship with technological performance; and (2) technological coherence moderates the relationship between technological diversification and technological performance positively. These hypotheses are tested empirically using a panel data set (1995–2003) on patent portfolios pertaining to 184 U.S., European, and Japanese firms. The firms selected are the largest research and development (R&D) actors in five industries: pharmaceuticals and biotechnology; chemicals; engineering and general machinery; information technology (IT) hardware (i.e., computers and communication equipment); and electronics and electrical machinery. Empirical results, obtained by fixed‐effects negative binomial regressions, support both hypotheses in the present article. Technological diversification has an inverted U‐shaped relationship with technological performance. Technological diversification offers opportunities for cross‐fertilization and technology fusion, but high levels of diversification may yield few marginal benefits as firms risk lacking sufficient levels of scale to benefit from wide‐ranging technological diversification, and firms may encounter high levels of coordination and integration costs. Further, the results show that the net benefits of technological diversification are higher in technologically coherent technology portfolios. If firms build up a technologically coherent diversified portfolio, the presence of sufficient levels of scale is ensured and coordination costs are limited. At the same time, technologically coherent diversification puts firms in a better position to benefit form cross‐fertilization between technologies. The present article clearly identifies the important role of technological coherence in technology diversification strategies of firms. 相似文献
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