1.1 INTRODUCTION Power consumption of High Performance Computing (HPC) platforms is becoming a major concern for a number of reasons including cost, reliability, energy conservation, and environmental impact. High-end HPC systems today consume several megawatts of power, enough to power small towns, and are in fact, soon approaching the limits of the power available to them. For example, the Cr...

cement production is an energy-intensive process, so that the cement industry occupies a top position among other energy-consuming industries. among the equipment used in cement industries, boilers are one of the energy-consuming equipment. boilers are among the common heating equipment in industrial, commercial, and institutional facilities. in this paper, the performance of thermal oil boiler...

Cuches usually consume a significant amount of energy in modern microprocessors (e.g. superpipelined or superscalar processors). In this paper; we examine contemporary cuche design techniques and provide an analytical model for estimating cache energy consumption. We also present several novel techniques for designing an energy efjiciency cache, which include block buffering, cache subbanking, ...

The energy consumption of IT and communication infrastructure is dramatically increasing. In the year 2000 the power consumption of servers, routers, and PCs in Germany was about 5 billion kWh per year [1]. For the year 2010 a power consumption of more than 55 billion kWh per year is expected for the IT and communication infrastructure in Germany [2]. In the face of global warming the reversal ...

-Thermodynamic foundations of the thermal entropy production are rested on the concept of lost heat, (Q/T)6T. The thermomechanical entropy production is shown to be in terms of the lost heat and the lost work as

Multichromophore perylene arrays were designed and synthesized to have extremely efficient resonance energy transfer. Using broadband ultrafast photoluminescence and transient absorption spectroscopies, transfer timescales of approximately 1 picosecond were resolved, corresponding to efficiencies of up to 99.98%. The broadband measurements also revealed spectra corresponding to incoherent trans...

Theoretical studies on the DNA-photocleavage efficiencies of Ru(II) polypyridyl complexes 1-4 have been carried out using density functional theory (DFT). First, an evaluation of the computational accuracy of the redox potentials for [Ru(bpy)(3)](2+) in the ground state and the excited state was tested by different computational methods. Secondly, the redox potentials of complexes 1-4 in the ex...

Nonexercise activities (NAs) are common types of physical activity in daily life and critical component in energy expenditure. However, energetic assessment of NA, particularly in free-living subjects, is a technical challenge. In this study, mechanical modeling and portable device were used to evaluate five common types of NA in daily life: sit to stand, lie to sit, bowing while standing, squa...

This paper aims at estimating the efficiency of hydroelectric power plants (renewable energy resources) and thermal power plant (non-renewable energy resources) in Iranian provinces. Data Envelopment Analysis (DEA) approaches is applied to estimate the efficiency. The network is modeled as a linear system with multiple inputs and one output. Fuel cost, labor force, operation cost are used as in...

introduction pistachio (pistacia vera l.) is one of the most important export crops of iran which has an important role in non-petroleum exports and has over $800 million benefit per year. however, production of this crop faces many problems in main production centers, especially in energy efficiency and productivity. the pistachio is a native crop of iran and syria. the major producers of pist...