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61.
Alain Bensoussan Metin akanyildirim Suresh P. Sethi 《Production and Operations Management》2007,16(3):360-368
Information delays exist when the most recent inventory information available to the Inventory Manager (IM) is dated. Such situations arise when it takes a while to process the demand data, count the inventory, and pass the results to the IM. We show that the optimal total inventory‐related cost decreases when the length of the information delay decreases. The amount of the decrease is an important datum for an IM interested in considering whether or not to invest in reducing the delay. The investment is required to finance design and acquisition of an information (collection and dissemination) system that can reduce the information delay. Such systems include phone calls, business meetings, and the use of information collection mechanisms such as radiofrequency identification tags. 相似文献
62.
Piat M Sabetti J Fleury MJ Boyer R Lesage A 《Journal of social work in disability & rehabilitation》2011,10(1):49-65
In this article, the authors report on qualitative findings on the role of family in supporting recovery for mental health consumers living in structured, community housing in a large Canadian city. Despite living separately from families and relying heavily on formal services, residents identified their families more often than mental health professionals, friends, and residential caregivers as those who most believe in them and their recovery. Families supported recovery by providing affection and belonging, offering emotional and instrumental support, and by staying actively involved with residents. Families are a vital, untapped resource for social workers in promoting independent living. 相似文献
63.
Theory and Decision - 相似文献
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66.
Frédéric Dor Pascal Empereur-Bissonnet Denis Zmirou Vincent Nedellec Jean-Marie Haguenoer Frans Jongeneelen Alain Person William Dab Colin Ferguson 《Risk analysis》2003,23(5):1047-1057
Polluted soils have become a public health problem. While population exposure to soil pollutants is generally quantified using multimedia models, their estimations have not been validated, and studies that attempted to do so are scarce. The objective of the SOLEX study was to compare the predictions of pyrene exposure levels (converted into 1 hydroxypyrene) computed by several models with the results of urinary 1-hydropyrene (1-HOP) assays among 110 employees working at three sites polluted during their past use as manufactured gas plants. Four models were used: AERIS (Canada), CalTOX (California, USA), CLEA (UK), and HESP (The Netherlands). Three occupational exposure scenarios--with office, mixed, and outdoor workers--were constructed, based upon job activities during two measurement campaigns, one in winter and one in summer. The exposure levels estimated by the four models could differ markedly (from 7 up to 80 times) according to the exposure scenario. Also, the predominant exposure routes differed according to the model (direct soil ingestion for HESP and CalTOX, inhalation for AERIS, and dermal absorption for CLEA). The predictions of CalTOX are consistent with the 1-HOP measurements for all the scenarios. For HESP, the consistency is observed for the scenarios, office and mixed, for which the pyrene level in the soil is low. AERIS and CLEA yield results that are systematically above the 1-HOP measurements. This study confirms that validation of the models is crucial and points out to the need to proceed to assess components of the models that are the most influential using appropriate statistical analysis in combination with true field data. 相似文献
67.
The aim of this paper is to study the concept of separability in multiple nonstationary time series displaying both common stochastic trends and common stochastic cycles. When modeling the dynamics of multiple time series for a panel of several entities such as countries, sectors, firms, imposing some form of separability and commonalities is often required to restrict the dimension of the parameter space. For this purpose we introduce the concept of common feature separation and investigate the relationships between separation in cointegration and separation in serial correlation common features. Loosely speaking we investigate whether a set of time series can be partitioned into subsets such that there are serial correlation common features within the sub-groups only. The paper investigates three issues. First, it provides conditions for separating joint cointegrating vectors into marginal cointegrating vectors as well as separating joint short-term dynamics into marginal short-term dynamics. Second, conditions for making permanent-transitory decompositions based on marginal systems are given. Third, issues of weak exogeneity are considered. Likelihood ratio type tests for the different hypotheses under study are proposed. An empirical analysis of the link between economic fluctuations in the United States and Canada shows the practical relevance of the approach proposed in this paper. 相似文献
68.
Alain Touraine 《Social movement studies》2013,12(1):89-95
This discussion was conducted with Professor Alain Touraine by Tim Jordan on 20 September in Paris. The discussion has been divided into headings that correspond to the areas of questions that were asked. The social context for the discussion is important in understanding Professor Touraine's comments because the discussion occurred 9 days after the World Trade Center and Pentagon attacks but before the bombing of Afghanistan began and with no chance of knowing what would follow. 相似文献
69.
Monique Séguin Marie Robert Mélanie DiMambro Alain Lesage Geraldine Reidi Michel Roy 《International Gambling Studies》2013,13(3):302-318
The purpose of this study is to investigate change in gambling behaviours over the life course, and, correspondingly, the treatment-seeking behaviours of 86 people who met the criteria for at-risk (participants endorsing two to four items on the South Oaks Gambling Screen [SOGS]) and problem gamblers (participants endorsing five or more items on the SOGS) over the last five years. Data were obtained from informants during semi-structured interviews using Structured Clinical Interview for DSM-IV axis I and axis II disorders (SCID I and II), SOGS and treatment-seeking interviews. The results showed three groups of gambling behaviours over the life course. A first group started gambling early on and continued participating in recreational gambling until its participants were between 40 and 50 years of age, during which time they became problem gamblers. A second group transitioned from recreational gambling to problem gambling over a short period of time; its participants were aged between 40 and 50. Lastly, a third group which was exposed to gambling later on in life, mostly after retirement, developed gambling problems quickly. Psychopathology was prevalent in all groups, given that 98% suffered from a mental health problem during their life, and 62% within the last six months. Participants who made use of the services available mostly turned to medical and specialized mental services for brief periods, usually when in crisis. In terms of problem gambling, the results argue in favour of maintaining dedication toward treatment, especially in the presence of co-morbidity. 相似文献
70.
Victor Y. Haines III Pierre Durand Alain Marchand 《Journal of marriage and the family》2013,75(3):778-793
This study investigated how core self‐evaluations relate to work–family (and family–work) conflict and burnout. Drawing from a sample of 289 police officers and civilian staff who were either married or living in a union as common‐law partners, this study advances an empirical integration of work–family and core self‐evaluations research. The results suggested that even when work, nonwork, and demographic variables are controlled for, positive core self‐evaluations (i.e., composite scale, self‐esteem, locus of control, emotional stability) are related to less work–family (and family–work) conflict. The associations between core self‐evaluations and burnout are partially mediated by work–family (and family–work) conflict. Finally, core self‐evaluations moderated the association between work–family conflict and burnout, but not the one between family–work conflict and burnout. 相似文献