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21.
Farrell D 《Harvard business review》2003,81(10):104-12, 138
During the soar-and-swoon days of the late 1990s, many people believed that information technology, and the Internet in particular, were "changing everything" in business. A fundamental change did happen in the 1990s, but it was less about technology than about competition. Under director Diana Farrell, the McKinsey Global Institute has conducted an extensive study of productivity and its connection to corporate IT spending and use during that period. The study revealed that information technology is important--but not central--to the fate of industries and individual companies. So if information technology was not the primary factor in the productivity surge, what was? The study points to competition and innovation. In those industries that saw increases in competitive intensity, managers were forced to innovate aggressively to protect their revenues and profits. Those innovations--in products, business practices, and technology--led to the gains in productivity. In fact, a critical dynamic of the new economy--the real new economy--is the virtuous cycle of competition, innovation, and productivity growth. Managers can innovate in many ways, but during the 1990s, information technology was a particularly powerful tool, for three reasons: First, IT enabled the development of attractive new products and efficient new business processes. Second, it facilitated the rapid industrywide diffusion of innovations. And third, it exhibited strong scale economies--its benefits multiplied rapidly as its use expanded. This article reveals surprising data on how various industries in the United States and Europe were affected by competition, innovation, and information technology in the 1990s and offers insights about how managers can get more from their IT investments. 相似文献
22.
Diana Callear 《Food Policy》1981,6(4):266-270
More than a year after independence, the main changes in agriculture in Zimbabwe have been minimum wage legislation, a high maize price accompanied by an exceptionally good growing season, the UNHCR (United Nations High Commission for Refugees) reinstallation and food programmes and the small beginnings of resettlement (and larger numbers of squatters). Certain food subsidies also affect rural areas although their greatest benefits accrue to those with urban incomes and urban diets. In addition the ‘former tribal trust lands’ are subject to increasing politicization as the newly elected district councils flex their muscles, providing at the same time an apparent attempt at decentralization and local participation with greatly increased expectations of assistance from the state. The future is uncertain, but it is evident that while the standard of living for the majority in rural areas remains so starkly low, the government will be forced to contend with sharply polarized forces, both within and outside the state apparatus, that seek to speed or dissipate the rate of change. 相似文献
23.
Evaluation of Efficiency in Primary Health Care Centres: An Application of Data Envelopment Analysis
Florencio García Carmen Marcuello Diana Serrano & Olga Urbina 《Financial Accountability and Management》1999,15(1):67-83
The aim of this paper is to analyse one of the principal problems in primary health care management: the evaluation of efficiency in primary health care centres. Given the special characteristics of measuring outcome in primary care it is necessary to evaluate the performance of centres from a quality perspective too. The methodology used, DEA (Data Envelopment Analysis), allows us to introduce quantitative and qualitative variables in a sample of primary care centres in a Spanish province. Once the efficiency of the different centres is known, we investigate the sensitivity of the methodology to changes in the definition of outputs used. 相似文献
24.
25.
In the aftermath of the financial crisis, the European Central Bank (ECB) has experienced an unprecedented deterioration in the level of trust. This raises the question as to what factors determine trust in central banking. We use a unique cross‐country data set that includes a rich set of socioeconomic characteristics and supplement it with variables meant to reflect a country's macroeconomic condition. We find that besides individual socioeconomic characteristics, macroeconomic conditions play a crucial role in the trust‐building process. Our results suggest that agents are boundedly rational in the trust‐building process and that current ECB market operations may even be beneficial for trust in the ECB in the long run. 相似文献
26.
The Boston mechanism is a popular student-placement mechanism in school-choice programs around the world. We provide two characterizations of the Boston mechanism. We introduce two new axioms; favoring higher ranks and rank-respecting invariance. A mechanism is the Boston mechanism for some priority if and only if it favors higher ranks and satisfies consistency, resource monotonicity, and rank-respecting invariance. In environments where each type of object has exactly one unit, as in house allocation, a characterization is given by favoring higher ranks, individual rationality, population monotonicity, and rank-respecting invariance. 相似文献
27.
Abstract Currency total return swaps (CTRS) are hybrid derivative instruments that allow us to simultaneously hedge against credit and currency risks. We develop a structural credit risk model to evaluate CTRS premia. An empirical test on a sample of 23,005 price observations from 59 underlying issuers yields an average percentage error of around 10%. This indicates that, beyond interest rate risk, firm-specific factors are major drivers of the variations in the valuation of these instruments. Regression analysis of residuals shows that exchange rate determinants account for up to 40% of model pricing errors, indicating that a currency risk premium affects the CTRS price significantly but only marginally, which confirms the prevalence of credit risk in the pricing of CTRS. 相似文献
28.
Raphael Braga da Silva Bernardo Prôa Bressane Alessandra Pasqualina Viola Antonio Carlos Figueiredo Pinto T. Diana L. van Aduard de Macedo Soares 《Latin American Business Review》2013,14(4):311-328
Based on studies of idiosyncratic volatility developed in the recent literature, this study analyzes its relation with expected returns through the breakdown of idiosyncratic volatility in the Brazilian stock market and presents evidence of the importance of expected idiosyncratic volatility for asset pricing. We study the impact of the expected and unexpected components of idiosyncratic volatility on the returns of shares listed on the BOVESPA between 2004 and 2011. The results show a strong positive and significant relation between expected idiosyncratic volatility and returns. This evidence is highlighted when we use unexpected idiosyncratic volatility to control for unexpected returns. Additional robustness tests, controlling for size and momentum effects, also have positive and significant coefficients, corroborating previous findings. 相似文献
29.
B.R. Orton L. Sjöberg J. Jung D. ürge-Vorsatz M. Tamássyné-Bíró 《Journal of Risk Research》2013,16(1):17-29
Perceptions of risks from two groups of industrial radiographers, one from Hungary, (n = 45) and from the United Kingdom, (n = 29) were compared by the psychometric method. The comparison was made because both groups were at risk for high doses of ionizing radiation. We found the groups had similar demographic profiles but poor socio-economic conditions of Hungarians were associated with higher levels of emotional distress. Correlation HU-UK for personal and general risks were at a significant level for topics that included lifestyle and radiation risks. Perceptions of risks from radiation were small except for large personal risk from East European nuclear power plants. Knowledge of radiation risk intranationally was correlated positively with personal risk for UK radiographers and negatively for Hungarians. However, average overall risk perceptions from the same topic list for all radiographers did not differ significantly from a group (n = 1461) of UK citizens, though radiographer's risks from radiation were considerably greater. As a new lifesaving intervention it was proposed that radiation risk reduction could be achieved by genetic testing. 相似文献
30.
Total factor productivity (TFP), factor accumulation, and growth are analysed for a panel of 40 countries in 2001–11. TFP growth and technical inefficiency are estimated using a stochastic frontier model. Environmental variables are found to have an important role in explaining differences in inefficiency across countries. Over 2001–11, the general improvement in technical efficiency of countries is almost outweighed by technological regress. Results indicate that differences in factor accumulation between OECD and emerging economies are more important than differences in TFP change to explain differences in economic growth. Results also indicate negative and significant random shocks for the OECD countries. 相似文献