warranty as a kind of service contract today plays a role key in business and legal transactions. in this paper, we present a manufacturer, an agent and a customer's model under different service contracts suggestions. the manufacturer's profit is maximized by determining sale price, warranty period and warranty price. in addition we obtain optimal maintenance cost or repair cost for ...

Abstract The great shift of paradigm from teacher-centeredness to learner-centeredness has one major rationale in line with the definitions of autonomy, i.e., the capacity and willingness to act independently and in cooperation with others, so cooperation is looked upon as the manifestation of autonomy. In the present study, the researchers investigated the impact of training cooperative...

the performance of women agribusiness cooperatives in oyo state, nigeria was assessed in this study. the study employed a multi-stage sampling technique to select 6 women cooperative groups (aggregating to 175 individuals); 36 individual women; and 4 institutions across 6 lgas in two agricultural zones of the state. findings show that majority (55.6%) of the respondents belong to processing org...

Solution concepts in cooperative games are based on either cost games or benefit games. Although cost games and benefit games are strategically equivalent, that is not the case in general for solution concepts. Motivated by this important observation, a new property called invariance property with respect to benefit/cost allocation is introduced in this paper. Since such a property can be regar...

one of the main problems in the quality control of rivers is the high control cost imposed upon pollutant units. the cooperative policy approach in the treatment process between two or more pollutant units is a new and economic perspective in the environmental management of catchment basins. origins of large amounts pollutants which require a high cost to control pollution are trying to start p...

the aim of this study was to determine influencing factors on participation of fishermen member cooperative in sustainable fishing in golestan province. the methodological approach of this study was descriptive- correlative. the research population consisted of 144 fishermen who member cooperative, which were selected using census method. validity of the instrument was established by a panel of...