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101.
We analyze the optimal choices of agents with utility functions whose derivatives alternate in sign, an important class that includes most of the functions commonly used in economics and finance (Mixed Risk Aversion, MRA, Caballé and Pomansky, 1996). We propose a comparative mixed risk aversion definition for this class of utility functions, namely, More Risk Averse MRA, and provide a sufficient condition to compare individuals. We apply the model to optimal prevention and willingness to pay. More risk averse MRA agents spend less to reduce accident probabilities that are above 1/2. They spend more only when accident probabilities are below 1/2. Explanations in terms of risk premiums are provided. The results presented also allow for the presence of background risk.  相似文献   
102.
    
Microbial burden associated with medical devices poses serious health challenges and is accountable for an increased number of deaths leading to enormous medical costs. Catheter-associated urinary tract infections are the most common hospital-acquired infections with enhanced patient morbidity. Quite often, catheter-associated bacteriuria produces apparent adverse outcomes such as urosepsis and even death. Taking this into account, the methods to modify urinary catheters to control microbial infections with relevance to clinical drug resistance are systematically evaluated in this review. Technologies to restrict biofilm formation at initial stages by using functional nanomaterials are elucidated. The conventional methodology of using single therapeutic intervention for developing an antimicrobial catheter lacks clinically meaningful benefit. Therefore, catheter modification using naturally derived antimicrobials such as essential oils, curcumin, enzymes, and antimicrobial peptides in combination with synthetic antibiotics/nanoantibiotics is likely to exert sufficient inhibitory effect on uropathogens and is extensively discussed. Futuristic efforts in this area are projected here that demand clinical studies to address areas of uncertainty to avoid development of bacterial resistance to the new generation therapy with minimum discomfort to the patients.  相似文献   
103.
    
Nonparametric functional data analysis is a field whose development started some 15 years ago and there is a very extensive literature on the topic (hundreds of papers published now). The first aim of this survey is to discuss the state of art in the field through a necessarily selected, bibliographical survey. The second aim is to present a wide scope of open questions in order to promote further discussions. Our main purpose is restricted to methodological contributions and also to emphasize on kernel functional regression analysis before extending discussions in two directions: alternative techniques to kernel methods for functional regression and other statistical problems besides regression.  相似文献   
104.
    
The launch of the Troubled Families Programme in 2011 has thrown into sharp relief how governments develop policies and practices to intervene in the lives of so‐called ‘troubled families’. Commentators were quick to make comparisons with historic efforts to rehabilitate ‘problem families’ in the post‐war period. However, beyond discursive similarities, there are also marked continuities in how family policies have been developed and implemented. This review narrates the rise, fall and rise of concern about ‘problem’ and ‘troubled’ families in England in the context of anxieties about child and family welfare, and the appropriate response of the state.  相似文献   
105.
    
We offer a new explanation for the occurrence of delegation in rent‐seeking contests. We consider a two‐player contest for a prize of common value. The players only know that the prize is high or low, with given probabilities. Each player can hire a delegate to act on his behalf. After a delegate is hired, she privately observes the true value of the prize. We derive the conditions under which, respectively, no player, only one player, or both players delegate in equilibrium. (JEL D7)  相似文献   
106.
Although studies examine preferences for hours spent in paid employment, little attention has been given to preferences for hours spent in unpaid household labor. This study examines the extent to which women working in low‐paid retail jobs would prefer to spend more or less time on household work and how alignment between preferred and actual time on housework is related to characteristics of paid work. Using original survey data and company records on a sample of women working at a U.S. retail firm (N = 277), the authors found that mismatch between preferred and actual time on household work was common. Roughly 42% wanted more time on household work and 18% wanted less. Working multiple jobs, work schedule unpredictability, and nonstandard work timing contributed to wanting more time on housework. Findings add to understanding of how low‐wage, precarious employment shapes workers' ability to attend to necessary tasks of household management.  相似文献   
107.
    
This paper proposes useful exact bounds for the parameters of the double sampling S2 chart with known process variance and it also investigates the properties of the double sampling S2 chart with estimated process variance, in terms of the average run length, the standard deviation of the run length and the average sample size, providing a numerical comparison with the known process variance case. It also provides guidelines to systematically design the double sampling S2 chart both with known and estimated process variance and proposes two optimal design procedures with estimated process variance, for (a) minimizing the out-of-control average run length and (b) minimizing the out-of-control average sample size.  相似文献   
108.
    
In this paper, we investigate the asymptotic properties of a non-parametric conditional mode estimation given a functional explanatory variable, when functional stationary ergodic data and missing at random responses are observed. First of all, we establish asymptotic properties for a conditional density estimator from which we derive almost sure convergence (with rate) and asymptotic normality of a conditional mode estimator. This new estimate take into account missing data, and a simulation study is performed to illustrate how this fact allows to get higher predictive performances than those obtained with standard estimates.  相似文献   
109.
Older women seeking employment often find opportunities limited to low-wage jobs, such as those in retail. We report findings about job placement and starting wages for hourly workers hired at a women’s apparel retailer from August 2006 to December 2009. We examine competing hypotheses regarding the role of age in explaining women’s job placement and starting wages. Although newly hired women age 55+ earn higher wages and are placed in higher-quality jobs than the youngest women (ages 18–22), they are less likely to be placed in better-quality jobs than their midlife counterparts. Overall, wage differences are largely explained by job quality.  相似文献   
110.
Focusing on the era of the Haitian Revolution, this article analyses recent historiographical developments in both French and English. Though the field has made great strides in recent decades, it occasionally remains hampered by insufficient archival research, a parochial approach by US and French scholars, and linguistic fragmentation. The article also includes a survey of the main archival resources that are available to scholars in Europe, the Caribbean, and the USA.  相似文献   
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