摘要：Virtualization has gained great acceptance in the server and cloud computing arena. In recent years, it has also been widely applied to real-time embedded systems with stringent timing constraints. We present a comprehensive survey on real-time issues in virtualization for embedded systems, covering popular virtualization systems including KVM, Xen, L4 and others.

摘要：柔性作业车间调度是生产调度领域中的一个重要组合优化问题,由于取消了工序与加工设备的唯一性对应关系,因而相较于作业车间调度问题,具有更高的复杂度。针对该问题在批量装配方面的不足,考虑将批量因素与装配环节同时集成到柔性作业车间调度问题当中。以成品件的完工时间为优化目标,对该批量装配柔性作业车间调度问题进行了数学建模。针对该模型,提出一种多层编码结构的粒子群算法,并对该算法的各个模块进行了设计。最后,以实例验证了该数学模型的正确性及算法的有效性。

摘要：As the demand for energy continues to increase, shale gas, as an unconventional source of methane(CH_4), shows great potential for commercialization. However, due to the ultra-low permeability of shale gas reservoirs, special procedures such as horizontal drilling, hydraulic fracturing, periodic well shut-in, and carbon dioxide(CO_2) injection may be required in order to boost gas production, maximize economic benefits, and ensure safe and environmentally sound operation. Although intensive research is devoted to this emerging technology, many researchers have studied shale gas design and operational decisions only in isolation. In fact, these decisions are highly interactive and should be considered simultaneously. Therefore, the research question addressed in this study includes interactions between design and operational decisions. In this paper, we first establish a full-physics model for a shale gas reservoir. Next, we conduct a sensitivity analysis of important design and operational decisions such as well length, well arrangement, number of fractures, fracture distance, CO_2 injection rate, and shut-in scheduling in order to gain in-depth insights into the complex behavior of shale gas networks. The results suggest that the case with the highest shale gas production may not necessarily be the most profitable design; and that drilling, fracturing, and CO_2 injection have great impacts on the economic viability of this technology. In particular, due to the high costs, enhanced gas recovery(EGR) using CO_2 does not appear to be commercially competitive, unless tax abatements or subsidies are available for CO_2 sequestration. It was also found that the interactions between design and operational decisions are significant and that these decisions should be optimized simultaneously.

摘要：To minimize the power consumption with resources operating at multiple voltages a time-constrained algorithm is *** input to the scheme is an unscheduled data flow graph (DFG),and timing or resource *** is considered with scheduling in the proposed algorithm as multiple voltage design can lead to an increase in interconnection complexity at layout *** is,in the proposed algorithm power consumption is first reduced by the scheduling step,and then the partitioning step takes over to decrease the interconnection *** time-constrained algorithm has time complexity of O(n 2),where n is the number of nodes in the *** with a number of DSP benchmarks show that the proposed algorithm achieves the power reduction under timing constraints by an average of 46 5%.

摘要：The similarities and differences between the container terminal logistics system(CTLS)and the Harvard-architecture computer system are compared in terms of organization and *** mapping relation and the modeling framework of the CTLS are presented based on multi-agent,and the successful algorithms in the computer domain are applied to the modeling framework,such as the dynamic priority and multilevel feedback scheduling *** addition,a model and simulation on a certain quay at Shanghai harbor is built up on the AnyLogic platform to support the decision-making of terminal on service *** validates the feasibility and creditability of the above systematic methodology.

摘要：This paper analyzes the Parallel Packet Switch(PPS) architecture and studies how to guarantee its performance. Firstly a model of Stable PPS (SPPS) is proposed. The constraints of traffic scheduling algorithms, the number of switching layers and internal speedup, for both bufferless and buffered SPPS architecture, are theoretically analyzed. Based on these results, an example of designing a scalable SPPS with 1.28T capacity is presented, and practical considerations on implementing the scheduling algorithm are discussed. Simulations are carried out to investigate the validity and delay performance of the SPPS architecture.

摘要：Based on the niche genetic algorithm, the intelligent and optimizing model for the rolling force distribution in hot strip mills was put forward. The research showed that the model had many advantages such as fast searching speed, high calculating pre- cision and suiting for on-line calculation. A good strip shape could be achieved by using the model and it is appropriate and practica-ble for rolling producing.

摘要：实际生产中的配合加工调度问题是生产调度理论研究的一个难点,它既要考虑常规调度标准约束,还要考虑工件与工件之间的配合工序约束。以最短加工时间为目标函数,建立配合加工调度模型,并采用启发式倒排算法对其进行求解。该算法能有效保证工件交货期,最后以一个实例验证算法的有效性。

摘要：Y2002-63334-3006 0310669短期速率变化对友好传输控制规约拥挤控制策略的影响模拟=Modeling the effect of short-term rate varia-tions on TCP-friendly congestion control behavior[会,英]/Li,K.& Shor,M.H.//Proceedings of the 2001American Control Conference Vol.4 of 6.—3006～3012(HE)Y2002-63343-974 0310670宽带时分-码分多址媒体存取控制规约的新调度方法=A new scheduling scheme for the wideband

摘要：Y2002-63121-530 0220870解决作业室调度问题的单指令多数据结构=SIMD ar-chitecture for job shop scheduling problem solving[会,英]/Chen,K.-H.& Chang,S.-C.//The IEEE In-ternational Symposium on Circuits and Systems Vol.4 of5.—530～533(HE)0220871基于数据立方体的数据挖掘系统[刊]/张海勤//计算机工程.—2002,28(6).—41～43(E)0220872WWW 搜索引擎的数据采集技术[刊]/陈新明//计算机工程与应用.—2002,38(7).—145～147,161(E)该文主要研究了 WEB 搜索引擎中的数据采集技术和 WEB 搜索引擎数据采集机器人的关键技术和设计时应考虑的问题及相应的解决方法,并结合专题型搜索引擎的特点提出了一些搜索引擎的数据采集策略。