Most manufacturers use human-machine systems to produce high-quality products. Dealing with human-machine systems is very complicated since not only machines should be utilized in proper condition but also appropriate environment should be provided for human resources. Most manufacturers have a maintenance plan for machines but many of them do not have a proper work-rest schedule for human reso...

Efficient and on-time maintenance plays a crucial role inreducing cost and increasing the market share of an industrial unit. Preventivemaintenance is a broad term that encompasses a set of activitiesaimed at improving the overall reliability and availability of a systembefore machinery breakdown. The previous studies have addressed thescheduling of preventive maintenance. These studies have co...

Purpose Maintenance therapy is an effective treatment strategy for advanced non-small-cell lung cancer (NSCLC). We aim to investigate whether age would affect the efficacy of maintenance therapy in the treatment of advanced NSCLC. Materials and methods Relevant trials were identified by searching electronic databases and conference meetings. Prospective randomized controlled trials assessing ...

Nowadays, production systems seek to integrate production and maintenance activities. An effective maintenance plan can improve maintenance stability and system performance. Machines that stop for repairing operation impose a high cost on the system. On the other hand, there are always some intangible situations during a production process in which repairing activities can be carried out. If th...

Religions and languages are social variables, like age, sex, wealth or political opinions, to be studied like any other organizational parameter. In fact, religiosity is one of the most important sociological aspects of populations. Languages are also obvious characteristics of the human species. Religions, languages appear though also disappear. All religions and languages evolve and survive w...

Social norms is a term that has been widely used in different areas of research like sociology, philosophy or multiagent systems. However there is still not a clear definition of what social norms are and the types of problems that they solve. This work presents a general classification and distinction of norms. The type of norms treated in this work are those norms created through the interact...

We present a multiagent learning approach to satisfy any given optimality criterion in repeated game self-play. Our approach is opposed to classical learning approaches for repeated games: namely, learning of equilibrium, Paretoefficient learning, and their variants. The comparison is given from a practical (or engineering) standpoint, i.e., from a point of view of a multiagent system designer ...

Web Services technology is a promising computirzgparadigm for applications integration o ver the Internet. Use o f Web services a nd related technologies facilitates the implementation of virtual enterprises across heterogeneous hardware and sofware platforms. This paperproposes a Web services /agentbased model for inter-enterprise collaboration. It presents a multi-agent model in dflerent leve...

One single implementation of this agent is usable in any environment and for various practical tasks, with modifications only in its hardware interface, thanks to environmentally independent knowledge representation and general motivational mechanism inspired by a psychological ERG model of human motivation [1]. Convenient formalism for symbolic knowledge representation and reasoning is also ne...

In this paper, instead of the classical approach to the multi-criteria location selection problem, a new approach was presented based on selecting a portfolio of locations. First, the indices affecting the selection of maintenance stations were collected. The K-means model was used for clustering the maintenance stations. The optimal number of clusters was calculated through the Silhou...