Masculinity, rationality, and family therapy

Contemporary accounts of masculinity have revealed masculine identity to be a fragile achievement. The ‘deconstruction’ of masculinity apparent in Western culture might also be seen in a powerful way in therapy, with the appearance of moments of breakdown in rationality, followed by the gradual articulation of an apparently nonrational position. The particular nature of this position will be as an expression of the ‘semiotic’: a breakthrough of the body into consciousness, an experience of being govened by something outside oneself which is nevertheless representative of the ‘truth’ of one's emotional state. Two illustrations are given of moments in family therapy where masculine assumptions appear to give way to a more confusional and fluid mode of experience.     

基于CT图像的鼻咽组织重建

基于CT图像的鼻咽部组织三维重建是建立鼻咽癌虚拟治疗系统的基础.鼻咽部组织多达六十多种,在组织分割过程中建立了鼻咽部组织解剖图谱,设定组织颜色查找表.在重建过程中,单纯利用一种重建算法不能满足重建模型效果好、显示速度快的要求.所以利用不同算法重建不同组织:改进的移动立方体算法用于重建重要鼻咽部组织,轮廓拼接算法用于重建次要的鼻咽部组织,表示空间位置的外轮廓使用光线投射算法进行绘制.通过组织分割,重建和模型简化实现了鼻咽部多组织模型重建.所建模型满足鼻咽癌虚拟治疗的需要.     

Guidelines for a constructivist approach: Steps toward the adaptation of ideas from family therapy for use in organizations

Constructivist family therapy offers a model for the application of Maturana's theories to practice. This paper describes key concepts of a constructivist approach and draws on family therapy to provide guidelines for applying them in an organizational setting. It offers a view of the organization as a network of conversations in which change occurs through the coconstruction of new conversations which widen or change the rational domain in which a problem occurs.     

基于轮廓特征的多模态医学图像的配准

多模态医学图像的配准在医学诊断和治疗计划中起着重要的作用。提出一种基于轮廓特征的迭代最近点 (SVD -ICP)的配准方法。这种方法是将最优化解析方法与迭代搜索相结合来解决图像轮廓点匹配问题的 ,适用于不同模态医学图像之间的配准。关于CT -MRI和PET -MRI图像的配准实验证明 ,该方法是有效的。     

基于自组织特征映射网络的聋人无损听觉补偿方法的研究

利用其他感知通路提供的信息可以对聋人进行无损的听觉补偿.提出了一种基于自组织特征映射网络的聋人无损听觉补偿方法.聋人利用自组织特征映射网络输出层的可视化信息监听自己的声音.结果表明,自组织特征为提高聋人的语言功能提供一种新的途径.     

水平不变海洋声道中WKBZ简正波方法的并行算法

并行算法是解决大数据量运算耗时过久的重要途径，在PC机群上实现并行算法是一种低成本、高效率的解决方案。首先介绍了计算机机群系统，在此基础上，建立了基于LINUX和MPI的PC机群实验环境，实现了WKBZ简正波方法并行计算，并利用建立的试验平台，对并行算法进行了测试，比较了并行WKBZ简正波计算和串行WKBZ简正波计算耗时的差异。根据理论研究和实际测试的结果，总结了利用PC机群系统进行并行WKBZ运算的可行性，得出了一些有意义的结论。     

The cognitive theories of Maturana and Varela

Maturana and Varela developed the concept of autopoiesis to explain the phenomena of living organisms. They went further and postulated theories concerning the nervous system and the development of cognition. These theories have radical conclusions concerning human thought, language, and social activity. This paper aims to introduce these ideas and to explore the main implications. It also discusses the application of these cognitive theories in three separate domains-computer systems design, family therapy, and the Law.     

Research and Reflection: Potential Impact on the Professional Development of Undergraduate Occupational Therapy Students

In occupational therapy education in South Africa, community service (CS) focuses learning opportunities during fieldwork placements. CS therefore enabled the researcher to utilise successive small scale research projects to guide learning of students during fieldwork while simultaneously developing the occupational therapy service at a residential care facility. This community setting provided a powerful environment through which research, in combination with opportunities for reflection, contributed to nurturing skills needed by these future health professionals. A technical action research (AR) approach incorporated AR cycles and opportunities for structured reflection. Therefore situations were created for the students to embrace experiential learning. Experiential learning in the form of anticipatory reflection, reflection-in-action, reflection on reflection and retrospective reflection impacted on the quality of the students’ work. Besides encouraging unique leaning opportunities for students when engaging in research during their fieldwork placement, engagement in AR cycles simultaneously improved service delivery to residents in the facility. Key benefits of this investigation were that fieldwork education utilising AR cycles within a CS situation promoted students to identify voids in their theoretical background as well as practice skills; to apply reflective practice that could contribute to their personal and professional development; and to utilize learning opportunities optimally. Despite positive gains showed by this study, the role of power relations between the researcher as fieldwork educator and the students prohibited the AR cycles from being more emancipatory in nature and should be addressed in follow-up studies.     

DNA损伤下的P53基因调控网络建模与仿真

作为关键调控因子之一,P53在响应DNA损伤期间通过启动下游基因及其调控通路实现细胞周期捕获,促进病变细胞凋亡等系统功能。P53基因调控网络对于肿瘤形成与治疗研究都起到了积极的促进作用。旨在通过数学模型对单细胞内部响应外界干扰而产生的复杂调控机制进行研究,建立了DNA损伤下的P53基因调控网络动力学模型,利用微分方程方法分别实现了各子模块响应离子辐射的详细过程;通过Matlab7.0仿真平台实现了DNA损伤修复,ATM（ataxia telangiectasia mutated）激活以及P53-MDM2等模块间的动态调控过程;通过仿真结果简要分析了ATM激活时间阈值以及P53与MDM2（Mouse double minute two）基因响应离子辐射而产生的周期震荡等特性。     

Uniformed model of networked control systems with long time delay

Feedback control systems wherein the control loops are closed through a real-time network are called networked control systems （NCS）. The defining feature of an NCS is that information is exchanged using a network among control system components. Two new concepts including long time delay and short time delay are proposed. The sensor is almost always clock driven. The controller or the actuator is either clock driven or event driven. Four possible driving modes of networked control systems are presented. The open loop mathematic models of networked control systems with long time delay are developed when the system is driven by anyone of the four different modes. The uniformed modeling method of networked control systems with long time delay is proposed. The simulation results are given in the end.     

随机和认知混合不确定系统的全局灵敏度分析方法

为计算具有随机不确定性和认知不确定性的混合不确定系统灵敏度,提出一种基于证据理论和条件概率理论的全局灵敏度分析方法.用证据理论对认知不确定性变量进行表征,并提出两种基于证据理论的随机采样方法,包括一次随机抽样法和二次随机抽样法.运用条件概率理论,提出存在认知不确定性条件下混合不确定系统的Sobol'全局灵敏度指标,经过理论推导给出一阶灵敏度及总灵敏度的计算公式,并设置单循环的拟蒙特卡罗方法实现灵敏度的近似数值计算.开发了灵敏度分析程序,并给出了典型应用实例.实例表明,新方法的分析结果正确,计算工作量可控.     

基于虚拟样机的武器系统性能评估方案

讨论了利用虚拟样机技术仿真的意义和重要性,概括了ADAMS的主要特点,介绍了ADAMS中用户自定义函数的编制,首次将其应用引入到武器装备研究领域。分析了影响火炮射击性能的主要故障模式,提出了火炮正常工作的三个基本准则。在火炮拓扑结构分析的基础上,结合Fortran语言编制了火炮故障仿真模块,在ADAMS环境下建立了火炮虚拟样机。制定了基于虚拟样机的火炮射击性能评估方案,并提出了火炮性能评估函数的概念。最后,对虚拟样机的应用前景进行了展望。     

具有时间窗的局内开放式车辆调度的竞争分析

基于k-卡车问题和局内运输问题，提出了具有时间窗的局内开放式车辆调度问题．该问题的优化目标为：在服务需求的发布为局内方式的条件下，如何最小化完成整个服务需求序列的时间跨度．建立了该问题的数学模型并对有关的概念和参数进行了定义和说明．研究了当车辆数为1时该问题的竞争分析的有关结果：给出并证明了对于该问题的竞争策略的竞争比下限；针对该局内问题，设计了两种不同的竞争策略，得到了相应的竞争比，并进行了理论证明．     

价格连续型局内设备赁购问题的竞争分析

基于局内算法分析领域中的On-line Ski问题,提出了局内设备赁购决策问题.建立了价格连续型的该问题的数学模型,针对购价恒定的情形和一般情形分别设计了B价赁购策略和赁购平衡策略(Renting-Buying Balance Strategy),给出了相应的竞争比,并进行了理论证明.得到了价格连续型问题的竞争比下限,并给出理论证明.讨论了所得结果在现实经济管理活动中的应用,并指出了进一步的研究方向.     

基于量子遗传算法的港口目标瞄准点选择

使用多枚巡航导弹攻击港口目标时,瞄准点选择非常关键,传统方法所用模型较为简单、算法较为耗时。为此,根据港口子目标幅员特性,构建矩形化子目标,并按离差最大思想赋予威胁指数。从毁伤效果出发,以毁伤下界为限,构建港口目标威胁消除模型。将量子理论引入遗传算法,构建量子遗传融合算法,并用其求解瞄准点分布。仿真结果表明,得出的瞄准点具有较高可靠性,验证了模型的有效性,所用算法能在短时间内找出最优解,提高了解的收敛速度。     

正交矩形波导并—串耦合缝散射特性

本文分析了两个正交矩形波导之间宽壁上窄槽的耦合特性.缝隙对于主波导为纵向槽,对于耦合波导为横向槽,或者相反,槽的位置是任意的.利用等效原理建立一对积分方程组,采用矩量法将其化成矩阵形式并求解,获得散射场和散射参量.介绍了Ku和Ka波段散射参量随频率变化的数据结果,理论与实验值比较,在Ku波段吻合良好,在Ka波段变化趋势相当.     

多阶段系统可靠性的混合式分析

评述两种不同的多阶段任务系统可靠性分析方法:多阶段任务系统的双值决策图组合式方法和马尔科夫链方法.如果多阶段任务系统的每一阶段是静态的,最好采用组合式方法解决;如果其中的一些阶段是动态的,不全是静态的,可能只采用马尔科夫链方法,也可能采用既有组合式又有马尔科夫链的混合式方法.通过研究部件跨阶段依赖性的特征和混合式方法的特点,针对部件失效服从指数分布和系统失效满足一定条件,提出相应的简便算法.这种算法综合了多种成熟的可靠性分析方法,通过案例分析充分说明它的低运算量和容易实施的特点.     

Seismic 3D Prestack Time Migration on Parallel Computers

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分流机制遗传算法研究

提出了一种基于分流机制的新型遗传算法。该算法采用优种限量繁殖 ,达标种交叉和劣种变异的策略 ,突出遗传算子各自的优点和作用 ,根据进化质量自适应地调整交叉和变异概率 ,使种群具有很强的可进化性。分流机制遗传算法改变了遗传算法的传统结构 ,种群始终具有探测新的超平面 ,从而获得新的最优个体的能力 ;同时 ,对于进化中的个体不需进行所有遗传算子操作 ,提高了算法的全局收敛性 ,降低了时间复杂度。测试结果表明了所提方法的有效性。