Automatic garbage collection relieves programmers from the burden of managing memory themselves and several techniques have been developed that make garbage collection feasible in many situations , including real time applications or within traditional programming languages. However optimal performance cannot always be achieved by a uniform general purpose solution. Sometimes an algorithm exhib...

This paper describes the modeling of the resonant-tunneling hot-electron transistor (RHET). In the analysis of the resonanttunneling harrier, we solved the Schrodinger and the Poisson equations self-consistently. We simulated the electron transport in the base and the collector barrier region using the Monte Carlo method, taking account of the space charge in the collector barrier. Our model in...

This study is focused on the froth flotation reprocessing of a copper mineral from tailings. The effects parameters including pulp density, collector dosage, frother and dispersant dosage were statistically examined to obtain an effective approach for concentrating minerals. sample ore used in this was mainly wastes that have been stored more than 30 years comprised mixed sulfide minerals parti...

In the present work the effect of Cu-Water nanofluid, as heat transfer fluid, on the performance of a parabolic solar collector was studied numerically. The temperature field, thermal efficiency, mean-outlet temperatures have been evaluated and compared for the conventional parabolic collectors and nanofluid based collectors. Further, the effect of various parameters such as fluid velocity, vol...

We have designed and implemented a new garbage collector for the Standard ML of New JerseySystem (SML/NJ). This collector has higher performance, lower latency and generally requires lessphysical memory than the existing SML/NJ collector. In addition, it is able to exploit the largesecondary caches found on modern workstations. This paper describes the design of the collector,an...

Four simulation sub-models of four main parts; namely, photovoltaic/thermal (PV/T) collector, silica gel dehumidification unit, living space and air conditioning system, have been developed for a detailed transient simulation model for a hybrid PV/T solar air heating system for regenerating silica gel in air conditioning room. The models are explained along with algorithms for making quantitati...

The effects of both abiotic factors and biotic interactions among guilds (i.e., inter-guild effects) have been suggested to be important for understanding spatial variation in species diversity; however, compared to the abiotic effects, the processes by which the inter-guild effects are mediated have been little described. Hence, we investigated stream invertebrate assemblages on Hokkaido Islan...