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考虑变热传导系数和粘性系数的MHD驻点流问题研究
Effects of Variable Thermal Conductivity and Viscosity on MHD Stagnation-Point Flow  [PDF]
李胜男
International Journal of Fluid Dynamics (IJFD) , 2016, DOI: 10.12677/IJFD.2016.44009
Abstract: 本文研究了考虑变热传导系数和粘性系数的二维定常MHD驻点流动问题。其中热传导系数和粘性系数是温度的函数。通过相似变换，将N-S控制方程组转化为常微分方程组；再利用打靶法计算此常微分方程组的数值解。分别对不同的磁场参数、流体粘性参数和普朗特数进行了数值计算，详细分析了磁场效应和温度变化对壁面摩擦系数、壁面传热及流场特征等的影响。
The two-dimensional MHD stagnation-point flow with variable thermal conductivity and viscosity is studied. The thermal conductivity and viscosity are considered as functions of temperature. The governing Navier-Stokes equations are transformed into a set of ordinary differential equations (ODEs) by similarity transformation. The transformed ODEs are solved numerically using shooting method. Numerical calculations for various magnetic parameters, fluid viscosity parameters and Prandtl numbers are carried out, and the effects of magnetic strength and temperature changes to the skin friction coefficient, heat transfer near the wall and flow field characteristics are discussed in detail.
考虑公平关切的团队多主体行为演化研究
李真,李胜男
科技进步与对策 , 2015, DOI: 10.6049/kjjbydc.2015040741
Abstract: 基于行为经济学相关理论，在团队合作过程中考虑成员的公平关切行为，构建了公平关切作用下团队成员行为决策的演化博弈模型，研究了成员公平关切度、产出能力、利润分享系数、协同效应系数等因素对成员行为选择的影响；分析了成员行为选择的演化稳定策略，旨在为提升成员努力水平、防范机会主义行为提供参考。结果表明，成员公平关切系数、努力成本系数与其努力水平呈负相关，而利润分享系数、成员产出能力则与主体努力水平呈正相关。团队合作公平关切行为选择演化博弈
亚临床甲状腺功能减退患者中医体质分型及其与颈动脉内膜中层厚度的相关性
李胜男,滕涛
中国中医药信息杂志 , 2015,
Abstract: 目的 探讨亚临床甲状腺功能减退(以下简称“亚临床甲减”)患者中医体质类型特点及其与颈动脉内膜中层厚度的关系,筛选出存在动脉粥样硬化高危险因素的偏颇体质类型,为从中医体质角度预防本病提供依据。方法 选取亚临床甲减者120例,正常健康者50例,均采用北京炎黄东方健康科技有限公司研发的KY3H中医体质辨识软件进行中医体质辨识,测定颈动脉内膜中层厚度,对亚临床甲减患者各体质类型与颈动脉内膜中层厚度的相关性进行分析。结果 120例亚临床甲减患者中,平和质3例(2.50%),气郁质30例(25.00%),气虚质28例(23.33%),阳虚质25例(20.83%),痰湿质13例(10.84%),阴虚质9例(7.50%),血瘀质6例(5.00%),湿热质5例(4.17%),特禀质1例(0.83%)。其中,气郁质、气虚质、阳虚质、痰湿质是亚临床甲减患者常见的中医体质类型,气郁质、气虚质者动脉硬化患病率高于其他体质类型。结论 气郁质、气虚质、阳虚质、痰湿质可能为亚临床甲减患者的主要体质类型,气郁质、气虚质与动脉硬化密切相关,提示心血管风险高
镉污染植物修复技术
Phytoremediation Technology of Cadmium Pollution  [PDF]
李彦奇, 关东明, 陈陆霞, 燕波, 谢胜男, 李铮
Bioprocess (BP) , 2014, DOI: 10.12677/BP.2014.44008
Abstract:
随着我国经济的飞速发展，累积的环境污染现象已逐步显露。近几年来，土壤污染状况的日益严重也可与水污染和大气污染相提并论。在种类繁杂的土壤修复技术中，植物修复技术逐渐显露它的优异之处。本文对土壤镉污染植物修复进行了简单的介绍，综述了近几年来效果显著的镉富集植物，并对植物修复技术的发展作出展望。
With the rapid development of economy, the cumulative environmental dyeing phenomenon has gradually revealed. In recent years, the serious soil pollution condition can also be compared with water pollution and air pollution. In the diversity of soil remediation technology, phytoremediation technology gradually showed its excellent place. This article simply introduced the overview of the phytoremediation of soil cadmium pollution, reviewed the cadmium enrichment plants with obvious effect in recent years, and made a prospect to the development of phytoremediation technology.
城镇化进程中的洛阳市区人口与建设用地扩展
王胜男,李阳,李猛
河南大学学报（自然科学版） , 2011,
Abstract: 城镇化是一个国家或地区文明程度的标志，我国城市的城镇化进程带有鲜明的行政推进色彩．洛阳市是一座集历史传统与现代特质于一身、极具代表性的重工业城市，作为中原城市群的副中心，城镇化对其发展的影响十分深刻．基于异速生长模型考察洛阳市区城镇化的动态演进过程，探讨影响城市发展最主要的人口和建设用地两大因素的相互关系，研究结果印证了行政导引对洛阳市区城镇化水平提高的强力拉动作用．
基于均差滤波与高斯和的非线性非高斯系统滤波算法
李振华,宁,磊,徐胜男
控制与决策 , 2012,
Abstract: 针对一类非线性非高斯系统的滤波问题,在分析均差滤波算法和高斯和滤波算法的基础上,提出一种基于均差滤波的高斯和滤波算法,适于处理非线性非高斯系统的滤波问题.对于似然密度位于条件转移概率密度拖尾处的情况,与传统的粒子滤波算法相比,所提算法能提高滤波的精度和实时性.仿真实验验证了新算法的有效性.
聚醚醚酮在口腔临床中的应用现状
Clinical applications of polyetheretherketone in stomatology
秦胜男,贾慧,李英()
- , 2018, DOI: 10.7518/gjkq.2018.06.006
Abstract: 摘要：
聚醚醚酮（PEEK）作为一种高分子材料,具有良好的力学性能、稳定的化学性质和优异的生物相容性。近年来,PEEK已经应用于可摘局部义齿卡环及支架材料、固定义齿修复体、赝覆体、种植体基台等领域,并在种植体、微种植体支抗、正畸弓丝等方面具有应用的可能性。本文旨在总结PEEK及其复合材料在口腔的现有应用及潜在应用。
Abstract:
中图分类号
基于特征的离散网格模型表示与编辑技术
李胜,盖孟,赖舜男
- , 2016, DOI: 10.13328/j.cnki.jos.005082
Abstract: 提出了一种基于特征的离散网格模型表示方法，能够表达传统三维网格模型中缺失的高层次信息，并以模型编辑为例显示了其应用价值.该特征结构利用特征线、特征面、特征组来建立离散网格的特征结构，用于描述模型的形状、约束、语义等信息，在原有网格模型的基础上构建了一个“超网格”.通过构建特征间的拓扑关系和约束关系，模型在编辑过程中能够保持特定的形状和结构属性，同时，由于编辑操作造成的网格修改被限定在局部的特征区域内，从而提高了模型编辑的运算效率
不同剂量右美托咪定对丙泊酚–芬太尼复合用于宫颈锥切术麻醉效果的影响
Influence of Different Doses of Dexmedetomidine on the Anesthesia Effect of Propofol-Fentanyl Combined in Cervical Conization  [PDF]
蔡胜男, 王世端, 贾媛芳, 米军桥, 李欢妮
Advances in Clinical Medicine (ACM) , 2021, DOI: 10.12677/ACM.2021.113185
Abstract:
目的：比较复合不同剂量右美托咪定在宫颈锥切术中对患者呼吸、循环及恢复时间的影响。方法：选择择期拟行宫颈锥切术的患者90例，ASA I~II级，年龄18~60岁，体重45~75 kg，BMI 18~28 kg？m？2。按照随机数字表法将患者分为3组，每组30例。D1组、D2组和D3组分别于患者入室后静脉输注右美托咪定0.3、0.6、0.9 μg？kg？1，泵注时间10 min。随后靶控输注丙泊酚(起始靶浓度1.5 μg？mL？1)和静注芬太尼0.5 μg？kg？1复合麻醉。观察并记录各时间点的心率(HR)、平均动脉压(MAP)、呼吸频率(RR)、呼吸末二氧化碳(PETCO2)、丙泊酚效应室浓度(Ce)。记录丙泊酚及芬太尼用量，苏醒时间，恢复时间，不良反应，术后调查术者及患者的满意度。结果：由于影响手术操作，D1组3例患者使用了神级肌肉阻滞剂，排除在研究之外。与D1组相比，D2组患者术中PETCO2和RR均无显著降低，呼吸维持稳定，MAP无显著降低，血流动力学稳定(P < 0.05)。与D3组相比，D2组患者HR无显著降低，血流动力学稳定(P < 0.05)。D1组舌后坠的发生率为51.9%，呼吸暂停发生率为18.5%，血压降低发生率为25.9%，D3组心动过缓发生率为73.3%，与D2组差异显著(P < 0.05)。与D1组相比，D2及D3组丙泊酚和芬太尼用量减少(P < 0.05)。三组患者苏醒时间无显著差异(P > 0.05)，D2、D3组恢复时间更短(P < 0.05)。三组手术时间、患者及术者的满意度无显著差异(P > 0.05)。结论：与0.3 μg？kg？1和0.9 μg？kg？1的右美托咪定相比，0.6 μg？kg？1右美托咪定减少了全麻药物的用量，提供了更稳定的呼吸和血流动力学特征，离室和恢复时间更短。
Objective: To evaluate the effects of different doses of dexmedetomidine on respiration, circulation and recovery time during anesthesia in patients undergoing cervical conization. Methods: Ninety patients, ASA physical status I~II, aged 18~60 years, weighing 45~75 kg, BMI 18~28 kg？m？2, undergoing cervical conization, were randomly divided into groups 0.3 μg？kg？1 (D1), 0.6 μg？kg？1 (D2), 0.9 μg？kg？1 (D3) using a random number table by nurse anesthetist (not participating in observation). Blind method was used in this study. Dexmedetomidine 0.3, 0.6, 0.9 μg？kg？1 were infused intravenously for 10 min before the patients are quiet in groups D1, D2, D3, respectively. And then TCI propofol (the target plasma concentration was set at 1.5 μg？mL？1) and fentanyl 0.5 μg？kg？1 were given. The assessment of HR, MAP, RR, PETCO2, Ce were continuously monitored. Dose of propofol and fentanyl, awakening time, recovery time, the incidence of adverse reaction were also recorded. Satisfaction of surgeons and patients were investigated after surgery. Results: Eighty-seven patients were enrolled, and three patients in group D1 were excluded from the study because of neuromuscular blocking agent use. PETCO2, RR, MAP were not significantly lower in group D2 than in group D1, and respiratory was stable (P < 0.05). HR was not significantly lower in group D2 than in group D3, and the patients were hemodynamically stable (P < 0.05). The rate of glossocoma, apnea and hypotension is 51.9%, 18.5%, 25.9% respectively in
时空众包中多目标优化任务分配
Multi-Objective Task Assignment in Spatio-Temporal Crowdsourcing  [PDF]
吴胜男
Computer Science and Application (CSA) , 2021, DOI: 10.12677/CSA.2021.113056
Abstract:
随着移动网络的快速发展以及配备各种内部传感器的移动设备的普及，时空众包已成为解决基于位置的传感任务的新兴范例。在现有研究中，时空众包系统主要最大化平台效用。为了最大化社会福利，本文提出了一种多目标优化任务分配(MOO-TA)模型，以最大化平台和众包工人的效用，激励众包工人执行偏远地区任务，扩大数据覆盖率。本文提出一种组合算法LWS_NSGA_II，结合传统的线性加权求和(LWS)算法和带精英策略的快速非支配排序遗传算法(NSGA_II)算法，以搜索针对多目标优化任务分配问题的所有可选择的帕累托最优解供平台选择。通过在真实数据集上进行比较实验，评估了该方法的有效性和可行性。
With the rapid development of mobile networks and the popularity of mobile devices equipped with various internal sensors, spatio-temporal crowdsourcing has become an emerging paradigm for solving location-based sensing tasks. In the existing research, the spatio-temporal crowdsourcing system mainly maximizes the utility of the platform. In order to maximize social welfare, this paper proposes the Multi-Objective Optimization Task Assignment (MOO-TA) model to maximize the utility of the platform and crowds workers. It encourages crowds workers to perform crowds tasks in remote areas, and expands data coverage. In this paper, the combination algorithm LWS_NSGA_II is proposed, which combines the traditional linear weighted Summation (LWS) algorithm and the Fast Non-dominated Sorting Genetic Algorithm (NSGA_II) algorithm to search for all selectable Pareto optimal solutions for multi-objective optimization task assignment problems for system selection. Through comparison experiments on real data sets, the effectiveness and feasibility of the proposed method are evaluated.
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