In this research, a distributed multi-generation system combining photovoltaic-thermal collectors with biomass generating units is established in numerical simulation environment. This aims to fulfilling heating demand of single-storey cottage located Xi'an, Northwest China. The feasibility and stepped utilization different levels energy are validated illustrated. order achieve reachable maximu...

An oldest-first generational garbage collector leaves intact the most recently allocated object space, and instead collects the remaining, older objects. Because these older objects have had more time to die, an oldestfirst copying collector will generally do less copying that a traditional generational collector (which operates youngest-first), a non-generational collector, and even Clinger an...

PMOS is an incremental garbage collector designed specifically to reclaim space in a persistent object store. It is complete in that it will, after a finite number of invocations, reclaim all unreachable storage. PMOS imposes minimum constraints on the order of collection and offers techniques to reduce the I/O traffic induced by the collector. Here we present the first implementation of the PM...

A uniform general purpose garbage collector may not always provide optimal performance. Sometimes an algorithm exhibits a predictable pattern of memory usage that could be exploited, delaying as much as possible the intervention of the collector. This requires a collector whose strategy can be customised to the need of an algorithm. We present a dynamic memory management framework which allows ...

A Faraday probe with three concentric rings was designed and fabricated to assess the effect of gap width and collector diameter in a systematic study of the diagnostic ion collection area. The nested Faraday probe consisted of two concentric collector rings and an outer guard ring, which enabled simultaneous current density measurements on the inner and outer collectors. Two versions of the ou...

The Primary concern in a Wireless Sensor Network is Energy consumption. The main problem in the network is when the data is sent from node to sink, the data will be lost due to polling point problem or low energy of node. Multi sencar technique is used to overcome polling point problem. In this paper, the tradeoff between energy saving and data gathering latency in mobile data gathering by trav...

Simulation study of a solar adsorption refrigeration system using a wing type compound parabolic concentrator (CPC) is presented. The system consists of the wing type collector set at optimum angles, adsorption bed, a condenser and a refrigerator. The wing type collector captures the solar energy efficiently in the morning and afternoon and provides the effective temperature for a longer period...

This work compares NPN and PNP SiGe HBTs fabricated simultaneously using Ge' implantation in the base to achieve an average Ge concentration of 4at.%. Electrical measurements are presented and discussed with TEM and SIMS analysis. The results show that the PNP HBTs give superior performance to the NPNs, as they have more ideal collector characteristics. The NPN HBTs exhibit collector-emitter le...