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41.
Yeming Gong Ren B. M. de Koster J. B. G. Frenk Adriana F. Gabor 《Production and Operations Management》2013,22(3):555-570
Self‐storage is a booming industry. Both private customers and companies can rent temporary space from such facilities. The design of self‐storage warehouses differs from other facility designs in its focus on revenue maximization. A major question is how to design self‐storage facilities to fit market segments and accommodate volatile demand to maximize revenue. Customers that cannot be accommodated with a space size of their choice can be either rejected or upscaled to a larger space. Based on data of 54 warehouses in America, Europe, and Asia, we propose a new facility design approach with models for three different cases: an overflow customer rejection model and two models with customer upscale possibilities, one with reservation and another without reservation. We solve the models for several real warehouse cases, and our results show that the existing self‐storage warehouses can be redesigned to generate larger revenues for all cases. Finally, we show that the upscaling policy without reservation generally outperforms the upscaling policy with reservation. 相似文献
42.
Editorial collaborators 相似文献
43.
We extend the Lusin Theorem to supermodular Dempster capacities.
Received: July 2000; revised version: May 2001 相似文献
44.
Adriana D. Kugler 《Demography》2017,54(3):835-859
Using data from nationally representative household surveys, we test whether Indian parents make trade-offs between the number of children and investments in education. To address the endogeneity due to the joint determination of quantity and quality of children, we instrument family size with the gender of the first child, which is plausibly random. Given a strong son preference in India, parents tend to have more children if the firstborn is a girl. Our instrumental variable results show that children from larger families have lower educational attainment and are less likely to be enrolled in school, with larger effects for rural, poorer, and low-caste families as well as for families with illiterate mothers. 相似文献
45.
Adriana J. Umaña‐Taylor Edna C. Alfaro Mayra Y. Bámaca Amy B. Guimond 《Journal of marriage and the family》2009,71(1):46-60
The current study utilized an ecological framework to examine the longitudinal interrelations among Latino adolescents’ (N = 323) cultural orientation (i.e., ethnic identity and enculturation), familial ethnic socialization experiences, and generational status. Findings indicated that ethnic identity and enculturation were both predicted by adolescents’ generational status, although some of these relations were indirect via the relation between generational status and familial ethnic socialization. Findings underscore the importance of examining the dimensions of cultural orientation independent of one another and considering the central role of familial socialization practices in these processes. Moreover, the current work provides direction for further theoretical work to advance our understanding of the unique aspects of cultural orientation. 相似文献
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47.
One of the most prevalent aspects is women with complaints of discomfort in the lumbar region for the use of high heeled shoe. Authors described that there may be a relation between attitude and the present discomfort, often associated with muscular fatigue and increase the forces of reaction soil during the use of such footwear. The purpose of this study was to evaluate possible changes postural associated with the use of different types of shoes and barefoot. Fifteen sedentary women were subjected to a static evaluation posture with the use of the software SAPO. Analysis of variance (ANOVA) repeated measures was used to investigate differences between the shoes in all variables postural analyzed. The results showed no significant difference in static position with the types of shoes and barefoot. It was concluded that the shoes did not interfere in static position. 相似文献
48.
Chiara Adriana Ripamonti Luca Pasquarelli Silvia Ravasi Francesca Chiara Sala 《Voluntas: International Journal of Voluntary and Nonprofit Organizations》2017,28(1):44-68
Voluntary work in Charities is a constantly growing reality: in particular, in the last few years, voluntary work in hospitals has become of great importance, marking a substantial increase of commitment in social issues. However, at the same time, volunteering Charities have been plagued by the increase of the phenomenon of dropout, that is, volunteers abandoning the Charitable Association they’re working in, often after a relatively short period of activity. In this study, we attempted to verify if and how active and dropped out volunteers perceive their own activity as a source of anxiety and stress. Our data show that both active and dropped out volunteers show high levels of burnout; in fact, dropped out volunteers show higher levels of burnout, especially of emotional exhaustion, in comparison with active volunteers. Subsequently, we identified the factors potentially assuming the role of mediators or moderators in the direct relation involving the status of voluntary work activity and the levels of anxiety and burnout. Our study demonstrates that coping strategies and the relationship established with hospital workers can be considered good moderators. 相似文献
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50.
Adriana B. Bortoluzzo Pedro A. Morettin Clelia M.C. Toloi 《Journal of applied statistics》2010,37(5):847-864
The main goal of this work is to generalize the autoregressive conditional duration (ACD) model applied to times between trades to the case of time-varying parameters. The use of wavelets allows that parameters vary through time and makes possible the modeling of non-stationary processes without preliminary data transformations. The time-varying ACD model estimation was done by maximum-likelihood with standard exponential distributed errors. The properties of the estimators were assessed via bootstrap. We present a simulation exercise for a non-stationary process and an empirical application to a real series, namely the TELEMAR stock. Diagnostic and goodness of fit analysis suggest that the time-varying ACD model simultaneously modeled the dependence between durations, intra-day seasonality and volatility. 相似文献