一种嵌入式GUI软件结构实现方案

综合比较了嵌入式GUI的几种实现方式,结合嵌入式系统的特点,研究了嵌入式GUI中的关键技术,分析了嵌入式GUI与普通GUI系统的不同之处,提出一种通用的嵌入式图形用户界面系统的设计思想和体系结构,这种嵌入式GUI实现方案具有轻型、占用资源少、可剪裁等特点。     

A decision support system for the selection of a casting process using analytic hierarchy process

This paper presents an Analytic Hierarchy Process (AHP) based decision support system to select the most suitable casting process for a given product. The hierarchical structure of the proposed method allows the decision maker to compare the different casting processes using the material suitability and flexibility, geometrical complexity, dimensional tolerance and surface finish of the casting, and the cost as the criteria for selection. Judgemental inconsistency of the decision maker in selecting the casting process is taken care by ensuring that the value of consistency ratio is below (0.1). A numerical example is presented to illustrate the effectiveness of the proposed methodology for selecting the suitable casting process.     

The struggle of autonomy and authenticity: framing the savage refugee

James Hathaway has described refugee law as ‘fundamentally oriented to the promotion of autonomy’. Borrowed from the Kantian roots of liberal rights theory, this theme has come to the fore as refugee advocates decry increasingly draconian experiments in deflection and deterrence. But what exactly does it mean for a refugee to exercise autonomy? And how is it connected to that other popular refrain – that those who arrive irregularly by boat in Australia, despite high recognition rates, are not ‘genuine’ refugees? By examining the assumptions underpinning autonomy as a contemporary political value, and working within the theoretical construct that identifies a state's ‘recognition’ of autonomy with authenticity, this article explores tensions within both public discourse on refugees and the discipline of refugee law itself. It considers how and why the refugee exercising ‘authentic’ moral agency by boarding a boat is depicted not just as a threat, but as inherently irrational (and thus not ‘authentically’ autonomous) and less ‘genuine’ (and thus virtuous) than the ‘passive’ refugee languishing in a camp overseas, awaiting ‘our’ redemptive touch. Finally, it asks whether refugee law similarly suffers from the contradictory moral promise of human rights law which places autonomy at its heart while in practice requiring that humanity be split between victim, savage and redeemer.     

高校优势学科建设工程的场域理论分析——以江苏省为例

江苏高校优势学科建设工程是地方政府推动高等教育追求卓越的精英政策之一,其目标定位、涉及范围、支持力度都是前所未有的。虽然工程权衡了学术性与功利性、效率与公平以及中央与地方的关系,但是仍然无法摆脱强化精英主义的质疑。在工程实施过程中,政治场域和学术场域的行动者和机构围绕优势学科建设同台博弈,或竞争,或合谋,最终促成优势学科建设工程的顺利实施,进而加剧了精英主义制度化的进程。破解精英主义制度化,也就是精英主义再生产的难题,一方面要实现公平正义的政策环境,制定合理公平的教育政策,同时建立必要的补偿机制;另一方面,则需要处于场域斗争中的教育机构的觉醒,来争取自身的各种权利。     

中国城镇居民家庭储蓄水平队列效应分析

利用中国家庭收入调查（ CHIP）数据对城镇居民家庭的储蓄率进行了队列效应的实证研究。分析结果表明,属于不同队列的城镇家庭在储蓄水平上都呈现出相似的“U”型年龄分布,即中年家庭（40－50岁）储蓄率低,年轻家庭（20－40岁）和退休家庭储蓄率较高,这一现象与其他国家的实证研究结果有显著不同。本文认为,中国城镇居民储蓄率的“U”型年龄分布主要是由人口与经济的高速增长带来的：人口高速增长带来的队列规模效应使得面对更大竞争压力的年轻人口储蓄率较高,而经济水平持续增长带来的消费水平增长预期使得接近退休家庭储蓄水平重新上升。     

First-exit times for compound poisson processes for some types of positive and negative jumps

We consider the one-sided and the two-sided first-exit problem for a compound Poisson process with linear deterministic decrease between positive and negative jumps. This process (X(t)) _t≥0 occurs as the workload process of a single-server queueing system with random workload removal, which we denote by M/G _u /G _d /1, where G _u (G _d ) stands for the distribution of the upward (downward) jumps; other applications are to cash management, dams, and several related fields. Under various conditions on G _u and G _d (assuming e.g. that one of them is hyperexponential, Erlang or Coxian), we derive the joint distribution of τ _y =inf{t≥0|X(t)?(0,y)}, y>0, and X(τ _y ) as well as that of T=inf{t≥0|X(t)≤0} and X(T). We also determine the distribution of sup{X(t)|0≤t≤T}.     

基于排队论的业务流程重组绩效分析方法

竞争的激烈化和顾客需求的多样化迫使企业从根本上重新思考企业过程重组。企业过程重组(BPR)的原则之一是横向集成活动。但是横向集成活动究竟有没有提高企业的绩效,这是个值得研究的问题。本文运用排队论的数学模型,研究活动合并对企业流程绩效之一——成本的影响,详细地讨论了活动的成本要素,比较了重组前后成本的变化。     

我国城市公共交通发展中存在的突出问题及对策

随着城市社会经济的快速发展，城市公交供需矛盾日益突出，公交发展中存在的突出问题阻碍了公共交通重要作用的发挥。解决好城市公共交通问题刻不容缓。就此提出了优先发展城市公共交通的若干对策。     

Approximating M/G/1 Waiting Time Tail Probabilities

Abstract

We propose a new approximation formula for the waiting time tail probability of the M/G/1 queue with FIFO discipline and unlimited waiting space. The aim is to address the difficulty of obtaining good estimates when the tail probability has non-exponential asymptotics. We show that the waiting time tail probability can be expressed in terms of the waiting time tail probability of a notional M/G/1 queue with truncated service time distribution plus the tail probability of an extreme order statistic. The Cramér–Lundberg approximation is applied to approximate the tail probability of the notional queue. In essence, our technique extends the applicability of the Cramér–Lundberg approximation to cases where the standard Lundberg condition does not hold. We propose a simple moment-based technique for estimating the parameters of the approximation; numerical results demonstrate that our approximation can yield very good estimates over the whole range of the argument.     

Non-linear models 1

This is the first application of a new method for testing stationary random point processes. Consider the class of all stationary ergodic point processes on the real line with arbitrary dependences among the inter–point distances (spacing).The hypothesis is :The observed process φ is a homogeneous Poisson process or more (resp.less) regular than a Poisson process.The sample is the vector of the first n points t₁, …,t_n.There is a close relation between our method for testing and queueing theory: For finding an appropriate test statistic, we observe the behaviour of a single server queue with the input φ.A table of critical values is given.