决策矩阵排序的投影法及其相关定理

针对属性权重已知而属性值为确数的多属性决策问题,提出了决策矩阵排序的投影法,并提出了关于投影法的三个定理及其证明.最后给出了两个相关例子说明本法的有效性和可行性.     

OPS网络中SOA交换矩阵的串扰研究

通过对光开关和节点流量进行建模，利用新颖的等效串扰系数法，研究了基于XGM效应的SOA开关矩阵在OPS网络中的串扰问题.分析了SOA的各种参量以及节点流量特性对开关隔离度、节点中由串扰造成的误码率以及节点级联能力的影响.提出了优化SOA交换矩阵的具体措施，包括提高SOA的载流子寿命、控制脉冲能量和节点中流量的单播特性，以及降低SOA的饱和能量和有源区长度等.     

Proof of Monotone Loss Rate of Fluid Priority-Queue with Finite Buffer

This paper studies a fluid queueing system that has a single server, a single finite buffer, and which applies a strict priority discipline to multiple arriving streams of different classes. The arriving streams are modeled by statistically independent, identically distributed random processes. A proof is presented for the highly intuitive result that, in such a queueing system, a higher priority class stream has a lower average fluid loss rate than a lower priority class stream. The proof exploits the fact that for a work-conserving queue, the fluid loss rate for a given class is invariant of what queueing discipline is applied to all arriving fluid of this particular class. AMS subject classification: 60K25, 68M20     

High-speed optical bit-pattern recognition employing fibre Bragg grating and Opto-VLSI processing

We propose a novel optical bit-pattern recognition employing an Opto-VLSI processor in conjunction with an array of fibre Bragg gratings (FBGs) with different Bragg wavelengths and a coherent-to-incoherent light converter. The FBG array slices the spectrum of the incoherent optical header and provides wavelength-dependent time delays, whereas the Opto-VLSI processor generates wavelength intensity profiles that match specific bit patterns. The recognition of 8-bit optical patterns is experimentally demonstrated at 2.2 Gb/s by showing that the correlator produces an autocorrelation waveform of high peak whenever the input bit pattern matches the wavelength intensity profile.     

Schedule Generation Schemes for the Job-Shop Problem with Sequence-Dependent Setup Times: Dominance Properties and Computational Analysis

We consider the job-shop problem with sequence-dependent setup times. We focus on the formal definition of schedule generation schemes (SGSs) based on the semi-active, active, and non-delay schedule categories. We study dominance properties of the sets of schedules obtainable with each SGS. We show how the proposed SGSs can be used within single-pass and multi-pass priority rule based heuristics. We study several priority rules for the problem and provide a comparative computational analysis of the different SGSs on sets of instances taken from the literature. The proposed SGSs significantly improve previously best-known results on a set of hard benchmark instances.     

Asymptotic loss of priority scheduling policies in closed re-entrant lines: A computational study

In this paper we present an approximate but efficient analytical method to compute the asymptotic loss of buffer priority scheduling policies in closed re-entrant lines. For simple two-station closed re-entrant lines, this enables the verification of Harrison-Wein conjectures and Jin-Ou-Kumar resuts. For multi-station re-entrant lines, this provides an efficient way of comparing different buffer priority scheduling policies. We also use the method to evaluate the effect of high priority jobs in re-entrant lines.     

Extraction of Priority Pollutant 4-Nitrophenol from Water by Emulsion Liquid Membrane: Emulsion Stability,Effect of Operational Conditions and Membrane Reuse

This work aims to the extraction of the priority pollutant 4-nitrophenol (4-NP) from water by emulsion liquid membrane (ELM). Liquid membrane consists of a diluent (hexane) and a surfactant (Span 80). Sodium carbonate solution was used as internal aqueous phase. Effects of important experimental conditions governing the stability of the W/O emulsion were investigated. Influence of operating parameters that affects the permeation of 4-NP such as surfactant concentration, emulsification time, sulfuric acid concentration in external phase, acid type in external phase, internal phase concentration, type of internal phase, stirring speed, volume ratio of internal phase to membrane phase, treatment ratio, 4-NP initial concentration, and diluent type was examined. This study also evaluated the effect of Na₂CO₃ concentration in the internal aqueous phase on the stripping of 4-NP. Additionally, the reuse of the recovered membrane was studied. Under most favorable conditions, practically all the 4-NP and aniline (AN) molecules present in the feed phase were extracted. The recovery of the membrane phase was total and the extraction of 4-NP was not decreased. The ELM treatment process represents a very interesting advanced separation process for the removal of 4-NP and AN from aqueous solutions.     

Affirmative action under common school priorities: The top trading cycles mechanism case

In school choice, there are two types of extensively used affirmative action policies based on majority quotas and minority reserves, respectively. This paper investigates the responsiveness of the top trading cycles school choice mechanism to these two types of affirmative action policies when all schools have the same priority order over students. Under the common school priority (within student type) condition, we show that the top trading cycles mechanism is minimally responsive to the minority reserves type of affirmative action policy, while a stronger majority quotas type of affirmative action policy may yield a Pareto inferior assignment for the minority.     

一种应用于桥载设备监控网络CSMA/CA机制算法

在机场桥载设备在线监测管理网络的现场应用测试中,针对网络突发事件中高优先级节点传输延时长,节点能耗利用率低的问题,采用基于优先级调度策略思想的网络节点能量优化机制,对网络MAC层协议中的CSMA/CA算法参数做出调整,达到数据快速传输的目的,利用NS2软件进行网络仿真,结果表明该方法提高了高优先级节点的信道访问率,均衡了网络能耗并延长了网络生命周期。     

基于模糊判断矩阵满意一致性的方案排序研究

应用模糊判断矩阵的完全一致性进行多属性方案排序因其条件较苛刻，有时会存在与专家原始判断意见偏离较大的缺陷。为此本文提出了一种基于满意一致性的排序新方法。首先提出了顺序模糊判断矩阵的概念，证明了任何满足满意一致性的模糊判断矩阵均存在顺序模糊判断矩阵。然后给出了顺序模糊判断矩阵的影子矩阵所具有的性质，并且根据这些性质对满足满意一致性的模糊判断矩阵提出了方案排序算法，最后进行了算例分析。从分析可知：这种基于满意一致性进行排序的算法不仅简便、实用，而且更符合专家的原始判断。