the term “system” is defined as «elements standing interaction». this implies that a change in any given element should bring about changes in other elements of the system and thus may be used to identify the boundaries of a system. a system can be a machine, a man, or a community. each of these may be part of a greater system (super system) or include several smaller systems (subsystems). syst...

System engineering is one of the most powerful tools for comprehensive project management and control. This tool emphasized the life cycle of the projects, manages every single activity and helps manage the main elements of the project through a set of management and engineering processes. The goal of the current study is to use a system engineering approach in design phase in order or to meet ...

Abstract   In vibratory systems, linear and nonlinear vibration absorbers can be used to suppress the primary and super-harmonic resonance responses. In this paper, the behavior of a nonlinear system with a nonlinear absorber, under the primary and super-harmonic resonances is investigated. The stiffnesses of the main system and the absorber are cubically nonlinear and the dampers are linear. M...

this article concentrates on the role and the place of the middle east in the international system after the cold war. after reviewing different theories and vies on the nature of international system and politics after the cold war, the author considers the rise of a new industrial super bloc, the main development after the end of the cold war. this super block has a unified and definite polic...

In this paper, we clarify the applicability of the super operator technique for describing the dissipative quantum dynamics of a system consists of two qubits coupled with a thermal bath at finite temperature. By using super operator technique, we solve the master equation and find the matrix elements of the density operator. Considering the qubits to be initially prepared in a general mixed st...

n modern society people are very concerned about the ealthy diet. Is there any food or mixture of food for mainaining sound health and slim body shape without worrying bout calories? This question does not have a simple answer. ee et al., in this issue (pp. 39) searched many literatures nd pointed out very interesting aspect of digestive funcion among specific types of Sasang Constitutional Med...

Full-specification 8K Super Hi-Vision Production System We presented a new video production system for full-specification 8K Super Hi-Vision (120-Hz frame frequency, 12-bit bit depth, and wide-color-gamut colorimetry). Compact 120-fps 8K Super Hi-Vision Camera Various cameras are being developed with the goal of constructing a 120-fps 8K Super Hi-Vision video production system. This exhibition ...