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101.
In an economy with private information, we introduce the notion of objects of choice as lists of bundles out of which the
market selects one for delivery. This leads to an extension of the model of Arrow–Debreu that is used to study trade ex ante with private state verification. Under the assumption that agents are prudent, equilibrium is characterized by the fact that agents consume bundles with the same utility in states that they do not distinguish.
This is a weaker condition than the restriction of equal consumption imposed by Radner (Econometrica 36(1), 31–58, 1968),
therefore, some no trade situations are avoided and the efficiency of trade increases. 相似文献
102.
Malmquist indices of productivity change in Portuguese banking: The deregulation period 总被引:1,自引:0,他引:1
This paper will evaluate productivity change in Portuguese banking using the Malmquist productivity index. The results show that between 1990 and 1997, banks in Portugal witnessed increased productivity and strong technological progress. Both small and large banks experienced higher productivity and technological change scores, while mid-sized institutions are putting more effort into catching-up policies. Rural banks have experienced strong productivity growth and are catching up with the best practices but lower levels of technological change. Urban banks show higher productivity growth and technological change levels. Government-owned banks have experienced lower levels of productivity change. Finally, the asset per employee ratio shows a positive correlation with the productivity scores, suggesting that this simple index is a good proxy for productivity. 相似文献
103.
We treat an extension of the Metcalfe and Steedman model of growth and distribution in a small open economy with government activity. We show, simultaneously, that certain kinds of taxation and government expenditures will not affect the essential nature of the “Cambridge Equation.” This is important due to the increasing process of Financial Globalization which can be responsible for changing the profit distribution between capitalists and workers. The present note aims at integrating the public sector and the foreign trade together into the model, based on previous literature that, with few exceptions, treats them separately. To do so, a new framework is proposed. Our contribution shows that workers’ income grows when the Current Account in the balance of payments is in surplus, a result not studied by Teixeira and Araújo. The discussion includes recent literature concerning with limits of applicability of such analytical model, dealing with more realistic economies including the process of globalization. 相似文献
104.
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106.
The paper investigates the information content of speculative pressure across futures classes. Long-short portfolios of futures contracts sorted by speculative pressure capture a significant premium in commodity, currency, and equity markets but not in fixed income markets. Exposure to commodity, currency, and equity index futures’ speculative pressure is priced in the broad cross-section after controlling for momentum, carry, global liquidity, and volatility risks. The findings are confirmed by robustness tests using alternative speculative pressure signals, portfolio construction techniques, and subperiods interalia. We argue that there is an efficient hedgers-speculators risk transfer in commodity, currency, and equity index futures markets. 相似文献
107.
Reducing intentions to resist future change: Combined effects of commitment‐based HR practices and ethical leadership 下载免费PDF全文
Change management, and particularly the human side of change, is a central tenet of the strategy of contemporary organizations. However, there is little evidence concerning how strategic HR practices influence how individuals anticipate and react to the implementation of a major change and how direct supervisors influence that process. With a sample of 191 employees from multiple organizations, who completed two surveys with a four‐week lag, we examined the role of commitment‐based HR practices on employees’ intentions to resist future change. We found that commitment‐based HR practices contribute to a decrease in intentions to resist future change, measured four weeks later, via increased affective commitment to change. Moreover, we found that this relationship is conditional on ethical leadership, in that it is significant when ethical leadership is high but not when it is low. Building on social exchange and uncertainty reduction theories, our findings contribute to the literature by examining how and under what boundary conditions HR practices are an effective means for organizations to anticipate and manage change. 相似文献
108.
João Lucas Hana Frade Jorge Henrique Caldeira de Oliveira Janaina de Moura Engracia Giraldi 《Telecommunications Policy》2021,45(9):102186
Streaming video (SV), such as YouTube, is a new media widely used nowadays. Nevertheless, there is a lack of knowledge about advertising in SV. In view of this, through a search in the rich depository of the Scopus database, this article presents the first integrative literature review about advertising in SV. Searching every article and conference paper related to the topic published until May 04, 2020, 59 studies were found and classified into two main topics: marketing studies (35), mostly focused on evaluating or exploring advertising in SV, and computational studies (24), focusing on the development of systems for the insertion of ads into SV. All knowledge present in these studies was summarized so that readers (both scholars and practitioners) could have easy access to the main contributions and information present in each study. Moreover, future research directions in six main themes are presented through a research agenda. 相似文献
109.
Meredith Waldon Treasure Joelson Ibingira Luciano de Andrade Blandina T. Mmbaga João Ricardo N. Vissoci Mark Mvungi 《International journal of injury control and safety promotion》2018,25(3):272-278
Road traffic injuries (RTIs) cause significant morbidity and mortality in low- and middle-income countries. Investigation of high risk areas for RTIs is needed to guide improvements. This study provides built environmental analysis of road traffic crash hotspots within Moshi, Tanzania. Spatial analysis of police data identified 36 hotspots. Qualitative comparative analysis revealed 40% of crash sites were on local roads without night lighting and increased motorcycle density. Paved narrow roads represented 26% of hotspots and 13% were unpaved roads with uneven roadsides. Roadside unevenness was more predominate in low risk [n = 19, (90.5%)] than high risk sites [n = 7 (46.7%)]. Both low [n = 6 (28.6%)] and high risk [n = 1 (6.7%)] sites had minimal signage. All sites had informal pedestrian pathways. Little variability between risk sites suggests hazardous conditions are widespread. Findings suggest improvement in municipal infrastructure, signage and enforcement is needed to reduce RTI burden. 相似文献
110.
Hyunyoung Jo Samuel Aryee Hsin‐Hua Hsiung David Guest 《Human Resource Management Journal》2020,30(2):198-225
Despite the growing importance of sustainable management of human resources, human resource management and leadership research on mutuality in the employment relationship has proceeded in a parallel fashion. Drawing on self‐determination theory, this study proposes an integrative model of human growth by addressing two interrelated questions: (a) how and why experienced service‐oriented high‐performance work systems (HPWS) and unit service leadership relate to psychological health and service performance and (b) whether thriving at work and psychological health serially mediate the relationships between the two contextual antecedents and service performance. Our findings revealed that experienced service‐oriented HPWS and unit service leadership related to service performance but indirectly through thriving at work. However, experienced service‐oriented HPWS but not unit service leadership related to psychological health through thriving at work. Furthermore, thriving at work and psychological health serially mediated the relationship between experienced service‐oriented HPWS (but not unit service leadership) and service performance. 相似文献