The Localization of “Imported” Urban Form in Northeast China: The Case Study on Circular–Radial Space in Dalian City

After the “imported” urban forms, which originated from foreign cultures, were transplanted into Chinese cities, they generate brand-new urbanscape but suffer from a lack of cultural roots and a disconnection with the mainstream of contemporary urban planning. Thus, their current value and potential in urban renewal are questioned. The study takes the circular–radial space from the Baroque cities as an example to clarify the motivation of its import from the west to northeast China. It further clarifies their adaptive changes in form and function in the local urban context, through a case study on Dalian City. The study finds that different geometric patterns of existing circular–radial space were influenced by European, American, and Japanese urban planning theories to varying degrees, but with equal emphasis on symbolism and functionality. Their implementation in Dalian has a continuity in time and space. But due to the changes in topography, traffic, and planning concepts, their forms and functions tend to be independent, their connection weakens, and their importance recedes after the street network. The circular–radial space in Dalian led to distinctive urbanscape. But during their inheritance and transformation, the rationality of new forms and functions, as well as the necessity of continuing the initial ones need to be dialectically considered, so as to avoid dogmatic revival and antique reproduction. Finally, the study reconsiders the concept of “localization” of “imported” urban form, and constructs a general research pattern to provide a new perspective for understanding the transformation of similar types of urban forms.     

中国近代建筑的中国观--以沈阳近代建筑为例

以沈阳近代建筑为例,否定了以"欧洲中心论"对待和评价中国近代建筑的片面思想,强调在近代建筑导入不同地区时,为适应当地条件而经历的本土化的变异、成长与发育过程,主张以"中国建筑的中国观"去看待中国的近代建筑,这对正确认识中国近代建筑、正确对待外来文化的引进,都是十分重要的.     

论城市竞争的空间效应

全球化和地方化作为城市竞争力的外部环境因素,是城市竞争优势的重要源泉。同时城市通过竞争影响着全球化和地方化的过程,并在不同层面空间上投下其竞争效应的投影。在全球层面,城市竞争效应主要表现在全球城市体系的形成、首位城市主宰世界经济趋势明显、多极多层次世界城市网络体系的形成。在区域层面,城市竞争效应主要表现在区域产业集聚、城市集聚;在城市层面城市竞争效应主要表现在新产业空间与城市竞争。     

地域——一种文化的空间与视阈

在当代建筑活动中,全球化与地域性构成了一种双向互动,提出了一系列“现代性”问题。有关全球化与地域性的争论似乎不可调和,然而其中却普遍存在着对于这两个概念的误解,这导致我们难于深入地域建筑文化的本质。本文试图对此论题进行深入探讨。     

本土营造——西北地区低碳生态乡镇的低技术策略

针对当前我国低碳生态城镇实践过分依赖“高技术、高投入”而难以实施的问题,结合西北地区乡镇发展的现实困境,本文提出西北地区乡镇低碳生态的理想路径为：探索一条具有地域适宜性的”低技术”策略,进而通过对西北地区乡镇碳排放特征的分析,提出加强对乡镇建设性碳排放的控制是西北地区乡镇实现低碳生态目标的关键。最后结合西北地区乡镇的地域特质,依托西安建筑科技大学在地域生态建筑与现代生土材料科学等领域的研究基础,提出：本土营造是降低乡镇建设性碳排放的有效途径,并提出其在规划与管理中的推广、应用策略。     

核电预应力锚固系统国产化及现场施工重点和难点

我国核电发展已有二十多年,在2008年之前,我国核电安全壳预应力施工全部采用国外预应力锚固系统。柳州欧维姆机械股份有限公司经过多年努力开发了二代改进型核电用预应力锚固系统以及第三代核电用预应力锚固系统,同时开发了配套施工设备,实现了我国核电预应力锚固系统国产化。本文全面介绍了我国国产化的核电预应力锚固系统以及在核电预应力现场施工中的重点和难点。     

A system for underground road condition monitoring

Poor road conditions in underground mine tunnels can lead to decreased production efficiency and increased wear on production vehicles. A prototype system for road condition monitoring is presented in this paper to counteract this. The system consists of three components i.e. localization, road monitoring, and scheduling. The localization of vehicles is performed using a Rao-Blackwellized extended particle filter, combining vehicle mounted sensors with signal strengths of Wi Fi access points. Two methods for road monitoring are described: a Kalman filter used together with a model of the vehicle suspension system, and a relative condition measure based on the power spectral density. Lastly, a method for taking automatic action on an ill-conditioned road segment is proposed in the form of a rescheduling algorithm.The scheduling algorithm is based on the large neighborhood search and is used to integrate road service activities in the short-term production schedule while minimizing introduced production disturbances.The system is demonstrated on experimental data collected in a Swedish underground mine.     

B超定位体外震波碎石(ESWL)治疗输尿管中段结石176例分析

目的:观察B超定位行ESWL对输尿管中段结石的治疗效果及分析其技术特点。方法:对176例输尿管中段结石采用ESWL治疗进行回顾性分析。结果:176例输尿管中段结石,治愈率达到95.5%。结论:B超定位行ESWL是治疗输尿管中段结石最简便、最快捷、痛苦最少的一种有效治疗方法。     

Distributed and resilient localization algorithm for Swarm Robotic Systems

Many applications of Swarm Robotic Systems (SRSs) require each robot to be able to discover its own position. To provide such capability, some localization methods have been proposed, in which the positions of the robots are estimated based on a set of reference nodes in the swarm. In this paper, a distributed and resilient localization algorithm is proposed based on the BSA–MMA algorithm, which uses the Backtracking Search Algorithm (BSA) and the Min–Max Area (MMA) confidence factor. It is designed in a novel four-stage approach, where a new method, called Multi-hop Collaborative Min–Max Localization (MCMM), is included to improve the resilience in case of failures during the recognition of the reference nodes. The results, obtained with real Kilobot robots, show 28–36% of performance improvement obtained by the MCMM. Also, it is shown that the final result of the localization process is better when the MCMM is executed than if it is not executed. The experiments outcomes demonstrate that the novel four-stage approach and the use of the MCMM algorithm represents a progress in the design of distributed localization algorithms for SRS, especially with regard to its resilience.     

Single Beacon Cruise Positioning Algorithm in Wireless Sensor Networks

Node localization is important in WSNs （Wireless sensor networks） applications. We present a new cruise positioning algorithm, where a single beacon node cruises an entire network, broadcasting its position periodically with fixed signal strength. Meawhile, an unknown node obtains the location and the corresponding distance of the beacon node. Two possible position coordinate sets for the unknown node can then be calculated, and the coordinate mean of the point set with a small variance is an unbiased estimator of the unknown node＇s coordinate. The positioning algorithm＇s computation is simple, positioning accuracy is not limited by a physical distance measuring tool, and there are no restrictions on the path of motion, which makes it more realistic. An algorithm simulation is presented to compare the original and cruise location algorithm. Numerical results show that the cruise localization algorithm can achieve good positioning accuracy.