precision forging process is widely used for the production of spur gears due to its advantages such asimproved strength and surface finish, little waste of materials and reduction in the machining time ofthe gear. an important aspect of precision forging process is the load required to perform the processsuccessfully and design the forging tools. in this research, a new kinematically admissibl...

economic literature in 1990s notifies that the larger a nation’s social capital is, the more fortunate and wealthier the nation would be. social capital or social part of production function is a nation’s historical heritage that aids the civil society in solving its problems through confidence factor. civil society institutions encourage the option of cooperation strategy by means of informati...

One of the variables that can be effective in reducing social problems, including alienation, is social capital. Because each of its components, such as trust, participation and group bounds, can lead to greater integration and, consequently, social order. Hence, due to the importance of the subject, the sociological explanation of the impact of social capital on forms of alienation has been di...

In this study, we introduce a new two-way relay channel and obtain an inner bound and an outer bound for the discrete and memoryless multiple access relay channels with receiver-source feedback via two-way relay channel in which end nodes exchange signals by a relay node. And we extend these results to the Gaussian case. By numerical computing, we show that our inner bound is the same with o...

a vast number of organizational projects as well as complexity of decision making process can cause particular challenges for project management and its leadership. in order to use organization assets and opportunities efficiently, it is necessary that manager implement a comprehensive multidimensional project portfolio management system that considers economic, social and technical details of ...

in this paper, the direct extrusion process of bimetallic rods in conical dies is analyzed by an improved upper bound method. the deformation zone is subdivided into six smaller zones and by considering a non-spherical entrance boundary to the deformation zone, a velocity field is presented which is different from velocity fields employed in previous studies. the total power consumption of the ...

we consider online scheduling of jobs with specic release time on m identical machines. each job has a weight and a size; the goal is maximizing total weight of completed jobs. at release time of a job it must immediately be scheduled on a machine or it will be rejected. it is also allowed during execution of a job to preempt it; however, it will be lost and only weight of completed jobs contr...

This paper presents a confidence interval quantification of maximum likelihood estimation of participant reliability in social sensing applications. The work is motivated by the emergence of social sensing as a data collection paradigm, where humans perform the data collection tasks. A key challenge in social sensing applications lies in the uncertain nature of human measurements. Unlike well-c...

In a network creation game, initially proposed by Fabrikant et. al. [FLM+03], selfish players build a network by buying links to each other. Each player pays a fixed price per link α > 0, and suffers an additional cost that is the sum of distances to all other players. We study an extension of this game where each player is only interested in its distances to a certain subset of players, called...

air defense is a crucial area for all naval combat systems. in this study, we consider a warship equipped with an air-defense weapon that targets incoming threats using surface-to-air missiles. we define the weapon scheduling problem as the optimal scheduling of a set of surface-to-air missiles of a warship to a set of attacking air threats. the optimal scheduling of the weapon results in an in...