OBJECTIVE to evaluate the association between psychological demands, control over the work and the reduction of work ability of nursing professionals. METHOD this cross-sectional study involved 498 nursing professionals of a university hospital in the State of Rio Grande do Sul, Brazil. Data collection was carried out in 2009 using the Brazilian versions of the Work Ability Index and Job Stre...

Effluent discharge from septic tanks is affecting the environment in developing countries. The most challenging issue facing these countries is the cost of inadequate sanitation, which includes significant economic, social, and environmental burdens. Although most sanitation facilities are evaluated based on their immediate costs and benefits, their long-term performance should also be investig...

With the ever increasing demands for pathology testing within the National Health Service there is a need to manage the demand for these tests. This review discusses strategies for the demand management of requests made by clinicians in the disciplines of biochemistry, haematology, and microbiology. The various approaches that have been used to manage demand will be described, along with specif...

The increase in electricity demand has exerted pressure on distribution networks to provide efficient and reliable services. In addition to this, the deployment of Distributed energy resources (DERs) is increasing vastly. Thus, new strategies for congestion management are required to cope with these new changes. This paper, proposes an algorithm to optimize the total operational cost of Distrib...

We study optimal government policy in an economy where (i) search frictions create a coordination problem and generate multiple, Pareto-ranked equilibria and (ii) the government finances the provision of a public good by taxing trade. The government must choose the tax rate before it knows which equilibrium will obtain, and therefore an important part of the problem is determining how the polic...

The aim of this thesis is to investigate novel recharging schemes for energy demand management (DM) of electric vehicles (EVs). While there has been a lot of work highlighting the importance of energy DM of EVs, most of the reported works do not expand on suggesting how such a DM system may be implemented. In this thesis the focus is on two aspects of DM system implementation. At the instantane...

Many airlines are struggling to survive in today's economy. A crucial contribution to the success of an airline is an e cient management of its revenues. The problem underlying revenue management is for the airline to decide whether to accept customer requests for air travel on a real time basis in order to maximize its expected revenue. Typically, an airline o ers several products (itinerary a...

We study optimal government policy in an economy where (i) search frictions create a coordination problem and generate multiple Pareto-ranked equilibria and (ii) the government finances the provision of a public good by taxing trade. The government must choose the tax rate before it knows which equilibrium will obtain, and therefore an important part of the problem is determining how the policy...