Motivated by a food promotion problem, we introduce the Knapsack Problem for Perishable Items (KPPI) to address a dynamic problem of optimally filling a knapsack with items that disappear randomly. The KPPI naturally bridges the gap and elucidates the relation between the pspace-hard restless bandit problem and the np-hard knapsack problem. Our main result is a problem decomposition method resu...

This paper employed the endogenous switching regression and propensity score matching methods to analyse the impact of row-planting technology on rice productivity using 470 rice farms in Northern Ghana. The empirical findings showed that the adoption of row-planting technology exerted greater positive impact on rice yields of smallholder farmers. In addition, rice yields of adopters and non-ad...

Medicaid's child health program, Early and Periodic Screening, Diagnosis, and Treatment (EPSDT), emphasizes health promotion and disease prevention as vehicles to ensure that children are ready for school and able to succeed in life. Required components of preventive care can be mapped to specific health outcomes that are important attributes of school readiness and prerequisites for educationa...

Motivated by a food promotion problem, we introduce the Knapsack Problem for Perishable Items (KPPI) to address a dynamic problem of optimally filling a knapsack with items that disappear randomly. The KPPI naturally bridges the gap and elucidates the relation between the pspace-hard restless bandit problem and the np-hard knapsack problem. Our main result is a problem decomposition method resu...

Musculoskeletal disorders (MSDs) are significant workplace problems affecting occupational health, productivity and the careers of dental professionals. The prevalence of MSDs is on the rise for all types of dental workers. In spite of different patterns of work culture, there are parallel levels of symptoms in dentists across nations. Risk factors for MSDs are multifactorial. Symptoms appear v...

Spence, QJE 1973 “Job Market Signaling” The big point: If there is a heterogeneity of types and there exists a signal which has a cost that is negatively correlated with productivity then there exist an infinite number of equlibirium which produce perfect information. Spence hopes to generate a model that “a considerable variety of market and quasimarket phenomena like admissions procedures, pr...

introduction: citizenship behaviors are behaviors which are not mentioned directly in the formal rewarding system of organization and often are forgotten and usually are regarded as voluntary; nonetheless, they affect the activities of organization. quality of work life is an important index which can provide enough and beneficial information for management from employees-related major issues a...

heat stress particularly  at  outdoor  workplaces in hot-dry    climates can  disrupt    the physical or mental functions and effect negatively on human performance. we aimed to study the effect of heat stress on productivity loss among workers of brick workshops in qom province – central iran. this cross-sectional descriptive and analytic study was performed on 184 workers in 40 brick workshop...

BACKGROUND Lifestyle-related health issues affect the economic position of organizations and contribute to reduced productivity, increased absenteeism and health care costs. AIMS To summarize the effectiveness of different workplace health interventions for promoting healthy lifestyle, preventing diseases and reducing health care costs. METHODS We searched MEDLINE via Pubmed, EMBASE, Cochra...