BACKGROUND Work-related injuries and illness are prevalent and costly. Firefighting is especially hazardous and many firefighters sustain work-related injuries. Workplace health promotion programmes have shown positive return on investment (ROI). Little is known about how similar programmes would impact injury and cost among firefighters. AIMS To evaluate the impact of a workplace health prom...

abstract: the profound effect of mgovernment on the future of businesses and communities has been proven in numerous studies. the aim of the present study is provide a model for user requirements and validate the proposed model is based on a literature review of research. the findings suggest that effective and efficient transactions including time, security, privacy, reliability and cost of th...

The development of inexpensive and efficient Pt-free electrocatalysts for the hydrogen evolution reaction (HER) is greatly crucial water electrolysis. Tungsten carbide (WC) exhibiting a Pt-like electronic structure represents an attractive alternative, although its overall performance limited by strong W-H bond that impedes desorption. Here, we employed in-situ interface engineering strategy to...

Electrocatalysts for hydrogen oxidation reactions (HORs) are the key to renewable-energy technologies including fuel cells, hydrogen pumps, and water splitting. Despite the significant technological interest and tremendous efforts that have been made, development of hydrogen electrode catalysts with high activity at low cost remains a great challenge. Here, we report the preparation, characteri...

Warranty service providers usually provide homogeneous warranty to improve consumer satisfaction and market share. Considering the difference of consumers, some scholars have carried out studies on maintenance strategies, pricing, payment method, claim behaviour cost analysis in recent years. However, few focused differentiated coverage that considers usage rate option consumers. On basis previ...

This paper presents the effects of a free-repair warranty on the periodic replacement policy in discrete time process. Consider a repairable product that should be operating at the time over an indefinitely long operation cycle n (     , 2 , 1 n ); under the discrete-time periodic replacement policy, a product is preventively replaced at pre-specified operation cycles    , 3 , 2 , N N N ...

The paper is concerned with estimating the cost of production and warranty in context a new product development project. All possible variants trade-off between costs are sought within company’s resources requirements for A company its projects can be specified terms variables constraints that constitute systems approach problem related to optimization. This described form constraint satisfacti...

We consider the problem faced by a company selling a product with warranty and under partial information about the product reliability. The product can fail from multiple failure types, each of which is associated with an inherently different repair cost. If the product fails within the warranty duration, then the company is required to pay the repair cost. The company does not know the probabi...