广告传播中的人文关怀及其发展趋向探析

人文关怀是广告传播中受众心理接受的基础条件,广告传播中的人文关怀具有向人们传达人生哲学观念和精神诉求的现代意义。消费文化的社会环境要求我们必须重视广告传播中的人文关怀状况,重视广告传播担负的社会责任,使广告真正成为社会文化建设中的一个有机部分,以建立正确的社会价值观和促进社会主义和谐社会的健康发展。论文从广告的题材选择、诉求角度和表现方式几方面分析了广告中人文关怀的传播特色,并着重论述了广告中人文关怀的发展趋向。     

无线通信及其干扰的建模与仿真研究

对无线通信及其干扰建模进行了分析和结构设计,重点研究了无线通信的天线、传播损耗、信噪比、误码率、纠错及通信干扰等主要模型,开发了仿真实例并进行了试验。结果表明：无线通信设备的战术技术性能、战场环境因素和通信干扰等对无线通信效果有极大的影响。     

知识的通信资源管理决策支持系统

专家系统可以模拟专家分析和解决问题的过程进行推理,最终给出合理的方案.将人工智能技术引入通信资源管理,提出了基于知识的通信资源管理方法,讨论了基于该方法的通信资源管理决策支持系统体系结构、知识库资源优化和推理机制.     

基于GoTa系统的远程图像传输研究

远程图像传输技术在目前军队后勤保障的应用范围越来越广泛,对于军队后勤的可视化建设起着十分重要的作用。采用了一种满足窄带条件下远程图像传输要求的图像编码方法,提出了一个通过GoTa数字集群通信系统进行远程图像传输的方案,并对其稳定性、安全性等指标进行了详细的分析。探索了远程图像传榆技术在军事应用中存在的问题和改进的方法,为构建适合军队后勤保障的远程图像传输系统提供了科学依据。     

低轨移动卫星异步多用户检测算法

介绍了一种适合在低轨(LEO)星载接收机上运行、低复杂度的异步CDMA多用户检测算法,能够有效对抗强多用户干扰和大多普勒频移。基带信号通过码片滤波后以码速率采样信号作为观测信号,然后利用Kalman滤波算法对各个用户信号进行分离。状态方程综合考虑了多普勒频移、定时误差。该算法能够抵抗高达35dB的远近效应,并且对频率和定时误差不敏感。     

帐篷辐射供暖试验研究

帐篷具有特殊的围护结构,其供暖不同于其他建筑。从特殊的使用及功能要求出发,确定研制以导电涂料发热为机理的新型电热供暖装置,制定并实现了其基本性能指标。针对帐篷在寒区取暖的现状,选择了较为合理的供暖方式,有效地解决了寒冷地区帐篷的供暖问题。分别在环境试验室模拟条件和自然气候条件下进行了低温供暖升温试验,通过试验研究了电热涂料辐射供暖的热舒适性和实测能耗,对试验结果进行了理论分析。试验表明对帐篷采用辐射方式供暖是一种高效的解决方案。     

仿真网格原型系统的设计与实现

进行仿真网格原型系统的研究是解决仿真网格关键技术的基础。SGE网格引擎是一个构建本地和集群级网格的工具,通过SGE构建基本的网格平台,根据HLA仿真任务的特点,对分布式仿真网格的原型系统进行了研究和设计。提出了仿真网格的双通道通信机制:一个通道负责仿真网格组件的通信,另一个通道负责HLA仿真任务之间的通信。提出了仿真任务在仿真网格中的三种调度模式:以进程为单位的调度、以联邦成员为单位的调度、以联邦为单位的调度等。通过研究初步实现了仿真网格的原型系统,并对HLA仿真任务的三种调度模式进行了简单的测试。     

Multivariate meta analysis with potentially correlated marketing study results

A univariate meta analysis is often used to summarize various study results on the same research hypothesis concerning an effect of interest. When several marketing studies produce sets of more than one effect, multivariate meta analysis can be conducted. Problems one might have with such a multivariate meta analysis are: (1) Several effects estimated in one model could be correlated to each other but their correlation is seldom published and (2) an estimated effect in one model could be correlated to the corresponding effect in the other model due to similar model specification or the data set partly shared, but their correlation is not known. Situations like (2) happen often in military recruiting studies. We employ a Monte‐Carlo simulation to evaluate how neglecting such potential correlation affects the result of a multivariate meta analysis in terms of Type I, Type II errors, and MSE. Simulation results indicate that such effect is not significant. What matters is rather the size of the variance component due to random error in multivariate effects. © 2000 John Wiley & Sons, Inc. Naval Research Logistics 47: 500–510, 2000.     

Responses of HFR-LWC beams under close-range blast loadings accompanying membrane action

The load-carrying capacities and failure patterns of reinforced concrete components can be significantly changed by membrane effects. However, limited work has been carried out to investigate the blast resistance of Hybrid Fiber Reinforced Lightweight Aggregate Concrete (HFR-LWC) members accompanying membrane action. This paper presents a theoretical approach to quantitatively depicting the membrane behavior and its contribution on the behavior of HFR-LWC beams under close-range blast loadings, and the suitability of the proposed model is validated by a series of field tests. An improved Single-Degree-of-Freedom (SDOF) model was employed to describe the dynamic responses of beam-like members under blast loadings accompanying membrane action, where the mass-load coefficient is determined according to the nonuniformly distributed load induced by close-range explosion, and the membrane action is characterized by an in-plane (longitudinal) force and a resisting moment. The elasto-plastic and recovery responses of HFR-LWC beams under the combined action of blast load and membrane force were analyzed by the promoted model. A specially built end-constrain clamp was developed to provide membrane action for the beam member when they are subjected to blast load simultaneously. It is demonstrated that the analytical displacement-time histories are in good agreement with experimental results before peak deflections and that the improved SDOF model is an acceptable tool for predicting the behavior of HFR-LWC beams under blast loadings accompanying membrane action.     

机群超视距作战联合战术信息系统的效能分析

建立了机群联合战术信息系统在超视距作战中综合机群的传感器、导航和火力控制系统,组织对目标协同探测、辨识和火力控制的系统模型,以及它的效能评估模型.仿真计算表明此信息系统能有效增加机群超视距作战的效能,但噪声和欺骗干扰会显著地影响它的效率.