Cr—B—W—V合金系统的优化设计

建立回归模型，将非线型回归化为多元线形回归问题来研究和解决，用最小二乘原理估计回归方程的系统．用复合调优法求出有约束的目标函数的最小值，从而确立Ｃｒ－Ｂ－Ｗ－Ｖ合金系统的最佳组成．     

21世纪广州市中心商务区(GCBD21)探索

在分析广州市CBD建设的必要性与存在的制约条件的基础上 ,提出了作为城市发展战略的 2 1世纪广州市中心商务区(GCBD2 1)概念以及其可能的规模、结构、形态和实施措施。该项研究为广州市目前正在推进的“广州市新城市中心———珠江新城规划检讨”与规划调整提供了参考。     

地铁与现代大城市的可持续发展

基于地铁的规划与修建日益成为城市建设的热点，本文讨论了地铁及其它地下设施与地上空间之间的关系，分析了现代城市的特征，并论述了地铁对城市规模、布局的影响以及地铁对现代城市可持续发展的作用     

Fault modeling on complex field using least‐square circle fitting for linear analog circuits

A new fault modeling method using least‐square circle fitting (LSCF ) for linear analog circuits is proposed in this paper. In this method, Monte Carlo simulation is used to obtain the output voltage values when the parameter of one faulty component is changed while those of the other components vary within their tolerance limits. All the output response voltage values for every faulty circuit statue are decomposed into real and imaginary parts on a complex field. Then, LSCF method is adopted to match these data, yielding a corresponding circular curve on complex plane, which also can be expressed with a circular function. Its center coordinates and radius are established as the fault features. During measurements, by calculating the distance from one real output to each circular center coordinate and comparing the distance with each circular radius, a faulty component can be diagnosed. The effectiveness of the proposed approach is verified by experiments. The results show that (i) the proposed fault modeling can accurately locate the fault component, and (ii) it can also simply be a fault dictionary. © 2017 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.     

竹香飘四海,桃花映九州——论桃江·大汉龙城千亩规划方案

本规划着力在桃江城区最具特质的绿色空间内,整合优势资源,引导综合开发,形成多元化社区用以提升城市品质,推动县域经济发展。     

多维数据分析法同时测定伏安峰严重重叠的有机污染物

设计了一种正交信号校正(OSC)-小波包变换(WPT)-偏最小二乘法(PLS)的多维数据分析方法,该方法结合微分脉冲伏安技术可对不经化学分离同时伏安峰严重重叠的2,5-二硝基酚、间硝基酚和对硝基酚的混合物进行同时测定。该方法利用OSC有效除去与浓度无关的结构噪音,又利用WPT改善了除噪和特征信息提取能力,从而提高了PLS的预测能力。根据OSC,WPT,PLS的算法原理编制了名为POSCWPTPLS,PWPTPLS,PPLS的程序来执行相关的计算。OSC-WPT-PLS,WPT-PLS,PLS法的测定结果表明,3种化合物的总相对预测标准偏差分别为3.76%,7.39%,7.98%,OSC-WPT-PLS法的结果优于WPT-PLS法和PLS法。     

LNG在舟山的应用

文章就LNG在舟山城市燃气、焊割气方面的应用现状进行研究,建议发展液化天然气汽车项目。     

Visualization of Large‐Scale Urban Models through Multi‐Level Relief Impostors

In this paper, we present an efficient approach for the interactive rendering of large‐scale urban models, which can be integrated seamlessly with virtual globe applications. Our scheme fills the gap between standard approaches for distant views of digital terrains and the polygonal models required for close‐up views. Our work is oriented towards city models with real photographic textures of the building facades. At the heart of our approach is a multi‐resolution tree of the scene defining multi‐level relief impostors. Key ingredients of our approach include the pre‐computation of a small set of zenithal and oblique relief maps that capture the geometry and appearance of the buildings inside each node, a rendering algorithm combining relief mapping with projective texture mapping which uses only a small subset of the pre‐computed relief maps, and the use of wavelet compression to simulate two additional levels of the tree. Our scheme runs considerably faster than polygonal‐based approaches while producing images with higher quality than competing relief‐mapping techniques. We show both analytically and empirically that multi‐level relief impostors are suitable for interactive navigation through large urban models.     

火车站站前广场使用状况的调查研究——以南京火车站站前广场为例

基于使用后评价POE(Post Occupancy Evaluation)研究方法,观察广场使用者的各类活动,采访广场的使用者以及发放调查问卷等,然后对调查所获的信息和数据做分析、整理,得到POE评价分析结论,从而了解了南京火车站站前广场的使用状况,为南京火车站站前广场改善服务设施、提高管理水平提供依据,也为其它类似场所的设计、管理所借鉴。