In facility games, public facilities are placed based on the reported locations of the agents. The cost of an agent is measured by the distance from its location to the nearest facility. In this paper, we consider the one dimensional facility games where all locations for agents and the facilities are on the real line. We study the approximation ratio of social welfare for strategy-proof mechan...

The incidence as well as the current state of the management of the limb deficient child in Japan is described. General medical and welfare services in Japan The medical service system in Japan is well organized and includes the diagnosis, treatment and follow-up care of limb deficient children. Once the child has been diagnosed as physically disabled due to limb deficiencies and/or congenital ...

urban facilities are necessary components of cities. in all grown and developed cities of the world there are tremendous network of facilities such as water and electric ties, water sewage drainage, water piping and gas piping. that has not been installed in proper depth underground and locations and with growing of the cities and consumption of population. they need to be replaced by excavatin...

Environmental conditions and bird health are important elements in assessment of animal welfare for laying hen housing systems, but limited information is available comparing different types of systems. Three types of laying hen houses caged high-rise, caged manure-belt, and cage-free floor-raised were monitored for temperature, relative humidity, carbon dioxide, and atmospheric ammonia during ...

Mechanism design for facility location (or selection of alternatives in a metric space) has been studied for decades. While strategy-proof, efficient mechanisms exist for unconstrained, one-dimensional, single-facility problems, guarantees of strategy-proofness and efficiency often break when allowing: (a) multiple dimensions; (b) multiple facilities; or (c) constraints on the feasible placemen...

Winter is a very important period during the dairying calendar. Regions such as Southland, with susceptible soils and extended periods with soils at saturation levels will face increasing pressure to review wintering practices. On-farm options for wintering cows to protect soils and prevent pasture damage are needed. This requires a turn-around in philosophy from taking cows to pasture/crops, t...

objective: the purpose of this study is to evaluate job satisfaction and general welfare among the primary health workers (behvarzes) in the primary health centers in kashan. the following seven items were assessed: physical, social, and psychological, environmental, organizational, educational, and administration structure and job facilities. method: subjects consist of 22 male and 43 female p...