Poverty‐aware social work practice: service users' perspectives

In recent years, there has been an increase in scholarly writing on the theory and practice of critical social work with people living in poverty. Yet there is a lack of research on the experiences and perspectives of service users regarding this kind of practice. This paper presents a qualitative study that explored the practice of a special poverty‐aware social work programme in Israel, through the experiences of women who took part in it. Using an interpretative interactionist approach, in‐depth interviews with nine women were held three times over a 2‐year period. Findings reveal a high degree of satisfaction with the programme on the part of the women. The satisfaction was derived from four main experiences: the experience of visibility, the experience of the active partnership in the fight against poverty, the experience of close, hierarchy‐challenging relationships, and the experience of responsiveness to material and emotional needs. The findings are discussed in terms of three principles of practice: intervention in a real‐life context, relationship‐based intervention and the focus on both the material and emotional needs and their fulfilment.     

Poverty‐aware social work in the child protection system: A critical reflection on two single‐case studies

In recent years, scholarly writing that calls for the development of a new child protection framework that contextualizes risk and links it to poverty and social marginalization has increased. Nonetheless, there is a lack of research on the challenges of implementing such a framework in frontline practice. Based on the ongoing, rigorous documentation of the author's experience, as a social work practitioner in a community child protection centre, this article presents two single‐case studies that describe and conceptualize the potential contribution of the poverty‐aware paradigm to the creation of a social framework for child protection practice. Utilizing critical reflection as a method of analysis, the findings reveal two major tensions entwined in poverty‐aware child protection practice: the tension between focusing child protection interventions on parenting and focusing them on poverty and the tension between framing risk within a social context and framing it within the concept of the best interest of the child. Based on the case studies, seven poverty‐aware practices to cope with these tensions are identified.     

支持分布式实时服务的开放系统环境

针对一个实际的开放系统环境,提出了实时活动的概念和有关的控制模型;阐述并探讨了模型中各层次的实时可调度公式。为了使实时服务在开放系统中得以具体实现,文中给出了系统的计算模型。     

FF总线实时通信机制研究

讨论了基金会现场总线（Foundation Fieldbus,简称FF）数据链路层的工作机制及其实时令牌循环时间特性,计算出了两个连续CD令牌的最小时间间隔,并通过美国Rosemount公司的Deltav系统对结果进行了验证。     

基于CORBA的分布式实时容错系统的研究

分析了由于分布式实时应用的特殊要求,ＣＯＲＢＡ将面临的关键问题,探讨了对ＣＯＲＢＡ对象和对象总线进行实时性扩展的方法,提出了一种具有实时容错特性的ＣＯＲＢＡ框架模型。     

上海B股市场流动性研究

基于分笔交易数据,使用多种流动性指标对B股市场的流动性特征进行了分析。研究发现相对价差是评估和描述B股市场流动性特征的最有效指标。同一家公司的A股股票比B股股票流动性更好。与市场相关的重大事件对市场流动性会产生较大影响。市场的流动性特征与波动性特征之间存在一定的内在联系。     

基于卡尔曼滤波的运动员实时跟踪系统研究

应用计算机技术,并采用预处理算法和跟踪算法可建立基于卡尔曼滤波的运动员实时跟踪系统,用于实时分割、跟踪球场中运动着的运动员,得到其在运动场景中的各项运动参数,并进行技战术统计和分析,为教练员和运动员制定正确的运动技术方案提供决策依据。     

实时/时变路网环境下城市出救点选择与救援车辆路径的集成动态优化

为了提升城市突发公共事件应急资源调配效率,考虑实时/时变路网环境下出救点选择与救援车辆路径的集成优化问题(CERFSVRP),设计了一种实时/时变交通信息的结合策略,并提出了满足先进先出原则的路段行驶时间计算方法.在此基础上,综合考虑出救点选择、供应能力以及车辆路径连续性等约束条件,以应急响应时间最短为目标,基于虚拟出救点概念和滚动时域策略建立了CERFSVRP动态优化模型.针对该模型的特点,设计了一种改进遗传算法和线性规划法相结合的两阶段算法.算例分析结果表明该模型和算法可以有效解决实时/时变路网环境下城市突发公共事件CERFSVRP动态优化问题.     

基于资源回收的容错单调比率调度

基于时间冗余的容错实时调度算法,其可调度条件是以任务的最坏执行时间和为任务预留容错操作的时间为分析基础,且任务拒绝率高,系统资源利用率低。该文提出的基于资源回收的容错单调比率调度,以容错实时调度算法FT-RM为基础,利用任务的实际执行时间低于最坏执行时间的特性,收集已完成任务释放的资源供等待任务使用,在保证系统容错要求的同时,提高了任务吞吐量和系统资源利用率,并通过模拟实验分析算法性能,研究了影响算法调度性能的若干因素。     

钠氢交换体1 mRNA在心衰患者心肌组织中的表达

目的观察钠氢交换体1（sodium—hydrogen exchanger1，NHE1）在心力衰竭患者心肌组织中的表达，探讨NHE1在心衰发生和发展中的作用。方法采用实时荧光定量聚合酶链反应（FQ—PCR）检测35例心力衰竭患者心肌组织NHE1mRNA的表达水平。结果实时荧光定量PCR（FQ—PCR）检测心功能Ⅰ级组、心功能Ⅱ级组、心功能Ⅲ级组心力衰竭患者心肌组织NHE1mRNA的△Ct值分别为6．29±0．66、5．01±0．60、4．40±0．74。与心功能Ⅰ级组比较，在心功能Ⅱ级组、心功能Ⅲ级组患者心肌组织中NHE1mRNA表达明显高于心功能Ⅰ级组（P〈0．01），同时与心功能Ⅱ级组比较，心功能Ⅲ级组患者心肌组织中NHE1mRNA水平增高，且差异有统计学意义（P〈0．05）。结论心衰患者心肌组织中存在NHE1mRNA的高水平表达，提示NHE1可能在心衰的发生和发展过程中起着重要作用。