A population-based iterated greedy algorithm for the delimitation and zoning of rural settlements

In this paper we present a Population-Based Iterated Greedy (PBIG) algorithm for delimiting and zoning rural settlements. Each cadastral plots is allocated to a category (traditional–historical, common or none) considering restrictions such as the characteristics of the existing edifications and the building density. Since the problem has multiple solutions, heuristic search algorithms, as PBIG, are a good strategy to solve it. Besides the resolution of the problem according to the requirements of the laws, our work explores also new methods of delimitation. The comparison between both types of solutions can help to improve the current methodology. The algorithm, implemented using the Java programming language and integrated into an open-source GIS software, has been tested in rural settlements with different morphological characteristics, providing adjustable solutions to the specific needs of each rural settlement.     

The 2012 free and open source GIS software map – A guide to facilitate research,development, and adoption

Over the last decade an increasing number of free and open source software projects have been founded that concentrate on developing several types of software for geographic data collection, storage, analysis and visualization. We first identify the drivers of such software projects and identify different types of geographic information software, e.g. desktop GIS, remote sensing software, server GIS etc. We then list the major projects for each software category. Afterwards we discuss the points that should be considered if free and open source software is to be selected for use in business and research, such as software functionality, license types and their restrictions, developer and user community characteristics, etc. Finally possible future developments are addressed.     

室内热舒适环境的模糊关系矩阵模型控制系统

针对复杂非线性系统中多个输出不能解耦的控制问题,基于实际系统的采样数据,利用矩阵半张量积运算建立模糊关系矩阵模型,得出一种新型模糊控制器设计方法.将传统模糊控制中的推理过程和模糊规则的建立转化成矩阵运算,有效避免了建模和控制的复杂性.将其应用于室内热环境舒适度控制系统中,基于室内外的温度、湿度等多个变量的采样数据对,给出具体的模糊关系矩阵的建立过程,设计得出新型模糊控制器.仿真和实验结果表明,该方法能够实现室内热环境的舒适度控制,并且不需要进行多变量之间的解耦.     

Modes of making smart cities: Or,practices of variegated smart urbanism

The ‘actually existing’ smart city is not a monolith. It is not directed by a universal logic, nor does it develop in a standardised way. As recent research has argued, the spatial, material, and political contexts of cities have major influence over what smart urbanism looks like in practice. This paper adds analytical depth to, and broadens the geographical scope of, research on the variegated modes of making smart cities. Based on empirical research in multiple Australian cities we use three case studies to explore three different modes of smart urbanism, each one centred on the interests of a different key actor: corporate-centric, citizen-centric, and planner-centric. These different modes can, and do, co-exist in the same city. At times, they are competing logics that fight to pull the city in different directions. Yet, they can also work together to shape smart city initiatives. In describing these different modes, we pay particular attention to the ways that these projects and strategies must contend with the already existing spatial, cultural, and political contexts of each place.     

Synthesizing Multi-Contrast MR Images Via Novel 3D Conditional Variational Auto-Encoding GAN

Mobile Networks and Applications - As two different modalities of medical images, Magnetic Resonance (MR) and Computer Tomography (CT), provide mutually-complementary information to doctors in...     

Resilience Articulation Point (RAP): Cross-layer dependability modeling for nanometer system-on-chip resilience

The Resilience Articulation Point (RAP) model aims at provisioning researchers and developers with a probabilistic fault abstraction and error propagation framework covering all hardware/software layers of a System on Chip. RAP assumes that physically induced faults at the technology or CMOS device layer will eventually manifest themselves as a single or multiple bit flip(s). When probabilistic error functions for specific fault origins are known at the bit or signal level, knowledge about the unit of design and its environment allow the transformation of the bit-related error functions into characteristic higher layer representations, such as error functions for data words, Finite State Machine (FSM) state, macro-interfaces or software variables. Thus, design concerns at higher abstraction layers can be investigated without the necessity to further consider the full details of lower levels of design. This paper introduces the ideas of RAP based on examples of radiation induced soft errors in SRAM cells, voltage variations and sequential CMOS logic. It shows by example how probabilistic bit flips are systematically abstracted and propagated towards higher abstraction levels up to the application software layer, and how RAP can be used to parameterize architecture-level resilience methods.     

水中目标自由场声辐射特性还原及远场声辐射热区识别

获取水中目标的声特性对目标识别和分析十分重要。为解决水中目标声特性测试中自由场条件难以实现的问题,消除结构表面能量流对远场声辐射热区识别的干扰,提出结合基于边界元自由场还原技术和表面贡献法的声场分离技术,实现水中近场非自由场环境中获取水中目标的声特性和识别远场声辐射热区。数值模拟结果表明:非自由环境下基于边界元的声场还原方法还原得到的声场声压、声功率等特性,与直接在自由场获取的结果基本相同;进一步利用表面贡献法过滤掉循环于振动结构表面的能量流,能够在近场识别远场辐射热区。该方法突破了测试环境限制,可大幅降低测试费用,具有一定的工程应用价值。     

烟台海昌渔人码头穹幕影院建筑声学设计

穹幕影院位于烟台海昌渔人码头鲸鲨馆内,影院内建筑面积约为300 m2,内设一穹形投影天幕,是一座以放映海底世界动画为主的专业影院。影院观众最大容量为80人,不设座椅,观众站立观看。简单介绍了该影院的建声设计指标、设计思路以及采取的声学措施,以供大家参考。     

Study of copper drift during TDDB of intermetal dielectrics by using fully passivated MOS capacitors as test vehicle

A fully passivated Metal-Oxide-Semiconductor (MOS) capacitor [T?kei Zs. Barrier integrity and reliability in copper low-k interconnects. ISTC 2005; 386–95] is used to study the intrinsic properties of a barrier between copper and dielectric in Back-End-Of-Line interconnects. Several barriers are studied and compared to each other. The test vehicle is also used to thoroughly investigate the role of thermal diffusion or field assisted ionic copper drift during Time-Dependent-Dielectric Breakdown (TDDB) by investigating the breakdown of dielectrics without a barrier at very low voltages.Comparing different barriers revealed that a “standard” PVD-based Ta barrier has a significantly better TDDB-performance compared to an 8 nm SiCN-barrier.For samples without barrier, it was found that long thermal anneals without the application of a stress voltage changes the distribution of failure times. Furthermore, the possibility of a bimodal distribution was argued when stressing these devices at a wide range of fields. A corollary is that, in presence of copper, both the E-model and the root-E-model do not apply for describing the experimental data obtained on these samples without barrier.