典型高层综合病房楼实例的竖向交通设计分析

通过对两个典型高层综合病房楼工程的竖向交通设计案例的比较分析,总结出一般的设计原则和具体措施。阐明了此类型建筑中竖向交通设计由单纯竖向交通核心组合到竖向交通核心空间化与机械物流系统及信息智能化系统集成的复合网络化演化的方向,揭示出依靠医疗体制的优化、医疗资源的合理分配、创新技术的充分应用、医疗建筑的科学合理规划建设等一系列社会综合治理措施的共同作用,才能有效地解决高层综合病房楼的竖向交通系统的诸多问题。

New Precoded Spatial-Multiplexing for an Erasure Event in Single Frequency Networks

In this paper, we propose a new spatial-multiplexing(SM) scheme employing an orthogonal precoder over Rayleigh-fading channels for an erasure event in single frequency networks(SFN). To optimize the precoder, the average bit error rate(BER) is evaluated and minimized through a mathematical analysis. Compared to an ordinary SM, the proposed scheme guarantees identical BER performance under non-erasure fading channels and achieves a greatly improved performance under erasure fading channels, especially for a higher erasure-ratio and SNR values. This improvement is mainly due to the increase in the diversity gain incurred by the optimized precoder over the erasure event. We also compare the performance of the proposed SM to that of the conventional constellation-rotation(CR) scheme applied to the single antenna SFN systems. The results of a computer simulation show that the performance of the new scheme is more effective than that of a conventional CR across all simulation cases.

基于城市绿色基础设施理论的“景观游憩原理”课程教学研究

哈工大风景园林专业的本科课程'景观游憩原理'在教学中结合城市绿色基础设施(UGI)理论,以人类和生态系统的可持续发展为前提,在强调生态服务功能多元化的基础上,以构建康体、游憩、安全疏散和历史文化遗产保护等功能一体化的生态复合型绿色基础设施空间网络为教学目标。在教学实践中,将理论基础与实践操作和虚拟现实体验相结合,形成了'DA+EV'教学方法,即数据收集(Data collection)、场地分析(Analysis)及方案的可视化评价(Evaluation+Visualization)。