Effective power saving mechanism is the most significant issue for extending the lifetime of mobile stations in wireless metropolitan area network (MAN). In this paper, we propose an effective method to analyze the system performance of the power saving class type II in IEEE 802.16e. We present a queueing model with two kinds of vacation mechanisms to capture the working principle of the networ...

train energy saving problem investigates how to control train's velocity such that the quantity of energy consumption is minimized and some system constraints are satis ed. on the assumption that the train's weights on different links are estimated by fuzzy variables when making the train scheduling strategy, we study the fuzzy train energy saving problem. first, we propose a fuzzy energy ...

Energy resources saving policy in municipal housing economy (MHE) is a priority in the national economy of Russia. It is aimed at reduction of costs for housing stock maintenance and operation and for optimization of housing and municipal services payment system. Suggested in the article is the organizational and economical mechanism of energy resources saving management in MHE, including funct...

In this research, an analytical method for quantification of the thermal energy performance improvement for a building integrated photovoltaic double-skin façade has provided. The system has been suggested as a retrofit measure for an existing building in Tehran. The effect of thermal performance has been analyzed through computer-assisted developed code using engineering equation solver softwa...

This paper describes the practical case study on finding the innovative conceptual idea of super water-saving toilet system using TRIZ. The physical contradiction in TRIZ with Quality Function Deployment (QFD), is defined for the fixed ceramic S type trap on saving water with preventing the bad smell from septic tank. The concept of flexible tube for saving water in toilet is obtained by using ...

IEEE 802.16e standard have been designed for both delay sensitive and delay tolerant applications. This paper presents energy-saving strategies by extending unavailability interval for multiple power saving classes simultaneously. The proposed model allows mobile stations to dynamically adopt multiple sleep mode operation or multiple partial sleep mode operation based on the buffer status of po...

Transfusion of blood and its components/derivatives is a life saving medical intervention. However, this life saving procedure depends mainly on the availability of sufficient blood and its components in national health sector. Therefore the overall safety of transfusion medicines including the safety of blood and its available components and the appropriate use of these components would dir...