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Increasing the attention of Green IT, many researches have been studied to reduce energy consumption occurring in network equipments. To reduce energy consumption in network equipments, sleeping concept has been explored in IEEE 802.3az Task Force Group. In this paper, we study factors that affect the performance of the sleeping mode in Optical Burst Switching (OBS) networks: traffic patterns and...
Recently, Green IT has attracted much attention to solve economical and environmental problems. To save energy in communication systems, Energy Efficient Ethernet (EEE) has recently begun to explore rate adaptation for energy savings. We study the performance impact of traffic patterns on energy consumption via simulation. To evaluate the energy saving performance according to the traffic patterns,...
With the increase of processor-memory performance gap, it has become important to gauge the performance of cache architectures so as to evaluate their impact on energy requirement and throughput of the system. Multilevel caches are found to be increasingly prevalent in the high-end processors. Additionally, the recent drive towards multicore systems has necessitated the use of multilevel cache hierarchies...
The increase on the demand of IT resources diverted enterprises to the use of costly physical servers. However, besides cooling and power cost, most of the times, physical servers are poorly utilized. Server virtualization is a way of better utilizing such resources and reducing power consumption. In this paper, a performance model for two virtual servers implemented on a single physical machine is...
The discrete-event simulation of entity flows and generalized statistical interpretation of simulation results causes an idea of a mesoscopic simulation. The paper deals with the discrete-event and mesoscopic simulation models of the wagon flow processing. The system under consideration is a railway transport junction. Some basic features of implementation of mesoscopic modelling components are considered...
This paper discusses simulation of the vehicle schedule with time windows. The simulation model is developed in AnyLogic simulation environment. A short overview of AnyLogic structure and scope is provided. A detailed description of a conceptual model with focus on input and output data is given. The structure of the simulation model and operation of its main blocks are described. Each vehicle is...
Grid systems are emerging as new large scale distributed computing paradigm aiming to manage and allocate geographically distributed computing resources such as processing power, memory, storage and networking to applications and users in an efficient and transparent manner. Grid systems, however, are new paradigms as regards their infrastructure, specific software and deployment, making thus their...
Operating rooms are regarded as the most costly hospital facilities. Due to rising costs and risks, it is necessary to optimize performance of the operating rooms. High quality information has a significant effect on improving process performance and patient satisfaction, as well as resolving patient disputes. Based on the analysis of the operation process, information quality (IQ) is considered as...
One of the most important simulation applications is the comparison of alternatives. Possible decisions, operating procedures, system designs can be compared through simulation experiments before implementing them in the real life. Stochastic simulation leads to variance of the estimated difference between systems performance measures. The goal of simulation experiments is to obtain point and interval...
Emerging technology has a high degree of uncertainty and complexity, and these characteristics render the technology management and evaluation more difficult. This paper utilizes the concept of technology foresight to establish the index system of evaluating the industrialization potential of emerging technology, which is composed of 5 first-grade indexes and 25 second-grade indexes. Then with the...
An analysis research of the industrial district of Belluno eyewear is being developed, with the final goal of creating a simulation model based on system dynamics. At first, the industrial district has been analyzed from a theoretical point of view, starting from the definitions that gave Alfred Marshall, in Principles of Economics (1890) up to the present concept. In general an industrial district...
In some interesting applications in control and system theory, i.e. in engineering, in ecology (Leslie population model), in financial/actuarial (Leontief multi input - multi output) science, linear descriptor (singular) differential/difference equations with time-invariant coefficients and (non-) consistent initial conditions have been extensively used. The solution properties of those systems are...
Due to uncertainties and complexities give birth to the future of emerging technologies, conventional methods for technology evaluation are subjected to many drawbacks and limitations. After combing the relevant literature to the commercial potential of emerging technologies, this paper proposes technology commercialization success to assess the commercialization potential of emerging technologies;...
Based on analyzing evolution of production models related to scientific and technical factors, as well as against not well describing quantitative relations between scientific and technical input and output of the models, the present paper has established a model simulating scientific and technological input and output with the back-propagation algorithm of artificial neural networks model, and predicted...
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