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排序方式: 共有230条查询结果,搜索用时 15 毫秒
1.
    
An evolutionary approach to the delimitation of labour market areas: an empirical application for Chile. Spatial Economic Analysis. Labour market areas (LMAs) are argued to represent a more appropriate policy framework than administrative units for the analysis of spatial labour market activity. This article develops LMAs for Chile by applying an evolutionary computation approach. This innovative approach defines LMAs through an optimization process by maximization of internal cohesion, subject to restrictions of minimum levels of self-containment and population. To evaluate the appropriateness of the LMAs, comparative analyses are performed between alternative delimitations based on different parameter configurations of the proposed method versus administrative boundaries and the most widely used method for official LMA delimitation, the travel-to-work areas method.  相似文献   
2.
This paper examines the relation between industrial mix, trade, and regional productivity growth. For this purpose, a dynamic model of the open economy with diversified sectoral knowledge formation and incomplete interregional knowledge diffusion is constructed. The theoretical framework is first used to show the consequences of increasing globalization on regional growth. It is then applied to German regional data in order to investigate whether there is evidence of generally specified patterns of knowledge formation. It emerges that some causal relationships are robust for the case of German regions but cannot be exploited by economic policy in general.  相似文献   
3.
Lucas L  Steinberg A 《Benefits quarterly》2006,22(4):13-4, 16-23
Recognizing that 401(k) plans are emerging as many employees' sole source of employer-sponsored retirement income, plan sponsors are increasingly adding paternalistic plan features to increase the amount--and effectiveness--of dollars invested in 401(k) accounts. The authors describe the results of a study they prepared for Hewitt Associates that assesses retirement income adequacy for individuals represented in a plan participant database of 1.8 million individuals. The study includes analysis of retirement income adequacy for the aggregate population as well as the results for different subgroups, reflecting factors such as whether individuals actively contribute; the impact of different levels of retiree medical coverage; and the presence of a defined benefit pension. Finally, the authors discuss how plan sponsors can bolster the adequacy of retirement income from 401(k) plans, depending on employer objectives.  相似文献   
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Ventilator-associated pneumonia (VAP) accounts for the majority of nosocomial pneumonias, which may increase intensive care and prolonged hospital stays. Endotracheal tubes allowing continuous subglottic suctioning may reduce VAP; however, they are more expensive than standard endotracheal tubes not allowing continuous suctioning. he objective of this study was to measure the comparative costs associated with continuous subglottic suctioning endotracheal tubes (CSS-ETT) versus standard endotracheal tubes (S-ETT) among intubated patients and whether cost differential is offset by the occurrence of VAP in patients receiving either type of intubation. A retrospective chart review was conducted for 154 intubated adult patients (77 = S-ETT; 77 = CSS-ETT). The S-ETT group had one case of VAP; the CSS-ETT group had none. The mean total hospital charges were higher for the S-ETT group ($103,600; CSS-ETT= $88,500) (p = 0.3). Although the average number of intubation days and ICU days were greater for the CSS-ETT group, there were no cases of VAP compared to the S-ETT group. ased upon the one S-ETT VAP case and the VAP attributable costs, it is cost effective to use the CSS-ETT.  相似文献   
6.
The prospect for electric vehicles as a climate change solution hinges on their ability to reduce gasoline consumption. But this depends on how many miles electric vehicles are driven and on how many miles would have otherwise been driven in gasoline-powered vehicles. Using newly-available U.S. nationally representative data, this paper finds that electric vehicles are driven considerably fewer miles per year on average than gasoline-powered vehicles. The difference is highly statistically significant and holds for both all-electric and plug-in hybrid vehicles, for both single- and multiple-vehicle households, and both inside and outside California. The paper discusses potential explanations and policy implications. Overall, the evidence suggests that today’s electric vehicles imply smaller environmental benefits than previously believed.  相似文献   
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ABSTRACT

Given theoretical premises, the gender-wage gap adjusted for individual characteristics is likely to vary according to age. This study adapts John DiNardo, Nicole M. Fortin, and Thomas Lemieux's (1996) semi-parametric technique to disentangle year, cohort, and age effects in adjusted gender-wage gaps. The study relies on a long panel of data from the German Socio-Economic Panel (SOEP) covering 1984–2015. The results indicate that, in Germany, the gender-wage gap increases over a birth cohort's lifetime, including in the post-reproductive age for some birth cohorts. The results suggest that age and gender are overlapping handicaps in the labor market and call for a policy intervention.  相似文献   
9.
Integrated employee benefit decision making helps employees use their benefits more wisely and identify opportunities to balance their immediate benefits needs (such as health care) and future benefits needs (such as retirement). This article discusses how employers can overcome employees' behavioral barriers to making integrated employee benefit decisions by changing the ways benefits are communicated and employees are presented with action decisions. Undertaking these steps allows employers to not only improve their employees' overall financial perspectives, but also furthers plan sponsors' goals of actively promoting personal responsibility with respect to retirement funding and changing employee behavior with respect to controlling health care costs.  相似文献   
10.
    
Predictions of stock returns are greatly improved relative to low-dimensional forecasting regressions when the forecasts are based on the estimated factor of large data sets, also known as the diffusion index (DI) model. However, when applied to text data, DI models do not perform well. This paper shows that by simply using text data in a DI model does not improve equity-premium forecasts over the naive historical-average model, but substantial gains are obtained when one selects the most predictive words before computing the factors and allows the dictionary to be updated over time.  相似文献   
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