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Stuttgart smartshell - A full scale prototype of an adaptive shell structure

Journal of the International Association for Shell and Spatial Structures 2013年第178期54卷 259-270页

作者： Neuhaeuser, Stefan Weickgenannt, Martin Witte, Christoph Haase, Walter Sawodny, Oliver Sobek, Werner Institute for Lightweight Structures and Conceptual Design University of Stuttgart Pfaffenwaldring 14 70569 Stuttgart Germany Institute for System Dynamics University of Stuttgart Pfaffenwaldring 9 70569 Stuttgart Germany College of Architecture Illinois Institute of Technology Chicago United States

The paper discusses the construction of the world's first full-scale prototype of an adaptive shell structure. The 10m × 10m double-curved structure, consisting of a multi-layer wood laminate, has three freely positionable supports. High-speed, real-time positioning of the supports allows for the manipulation of stress fields within the shell as well as of vibrations and deformations of the structure. The paper focuses on the potentials of adaptivity for shell structures and the construction process of the prototype.

关键词： Shells (structures)

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The roles of urban buildings and vegetation in adjusting seasonal and daily air temperature 4

The roles of urban buildings and vegetation in adjusting sea...

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4th ISPRS Geospatial Week 2019

作者： Lan, Y. Huang, Z. Guo, R. Zhan, Q. Research Institute for Smart Cities School of Architecture and Urban Planning Shenzhen University Shenzhen China Shenzhen Key Laboratory of Spatial Information Smart Sensing and Services Shenzhen University China Guangdong Key Laboratory of Urban Informatics Shenzhen University China National Engineering Laboratory for Big Data System Computing Technology Shenzhen University China School of Urban Design Wuhan University Wuhan China

Exploring the spatiotemporal patterns of the relationships between urban indicators and urban temperature is essential to improve the mitigation effectiveness when we intend to adjust built environment for moderating urban thermal environment. In this study, RS, GIS technology and statistical methods were involved to investigate the spatiotemporal patterns of the impacts of urban buildings and vegetation on Air Temperature (AT). Building Density (BD) and Normalized Difference Vegetation Index (NDVI) are the indicators for urban buildings and vegetation respectively. The objectives of this study are: 1) to determine an appropriate scale for examining the building-AT relationships and vegetation-AT relationships;2) to explore the seasonal and daily characteristics of these relationships;and 3) to compare the effects of urban buildings and vegetation. The results show that, for both summer and winter, a scale of 200–250 m is optimal for examining building-AT relationships, and 960–1020 m is the desirable scale for studying vegetation-AT relationships. Based on the optimal scales, we find that for both buildings and vegetation, they only significantly impact night-time temperature in both summer and winter. For seasonal comparison, the building-AT relationships and vegetation-AT relationships are relatively stronger in summer than in winter, which are indicated by R-square of the regression results. When comparing the effects of urban building and vegetation, we find that increasing vegetation is more effective than reduce buildings to achieve the same air temperature reduction. Our findings are conducive to generating space-time targeted Urban Heat Island (UHI) mitigation strategies. © Authors 2019.

关键词： Vegetation

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Notice of Retraction: Green building on the basis of low impact development theory and practices

Notice of Retraction: Green building on the basis of low imp...

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International Conference on Electric Technology and Civil Engineering (ICETCE)

作者： Jian-long Wang Wu Che Jun-qi Li Wei Feng Shen-jian Li Guo-qing Pan Key Laboratory of Urban Stormwater System and Water Environment Beijing University of Civil Engineering and Architecture Ministry of Education China M & E Division (Beijing Regional) China Construction (Beijing) Design International China

This article has been retracted by the publisher.

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Case-dependence of Level-based Idea Space Variety for systematic Biologically-Inspired design

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Procedia CIRP 2016年 39卷 173-178页

作者： D. Vandevenne T. Pieters C. Vanneste J.R. Duflou KU Leuven Centre for Industrial Management Dep. of Mechanical Engineering Celestijnenlaan 300A 3001 Leuven Belgium UGent Faculty of Engineering and Architecture Dep. of Industrial System Engineering and Product Design Graaf Karel de Goedelaan 5 Kortrijk Belgium

As Biologically-Inspired design is receiving more and more attention, methodologies and tools are developed to support the systematic bio-ideation process. However, few experiments have been conducted that objectively measure the impact of bio-ideation methods or tools on the design outcomes of creativity efforts. This paper investigates the impact of two biological stimuli conditions – using short natural-language descriptions accompanied by a photograph of the involved biological system (1) or accompanied by a graphical illustration of the biological solution principle (2) – on the variety of the generated idea set. Hereto, biological strategies from one relevant functional class of AskNature's Biomimicry Taxonomy are used as stimuli and their impact is quantified. Participants, 59 students divided into three groups, are all submitted to the no tool condition for a first design challenge from which the intended balancing effect of random group assignment is verified. During the second and third challenge, one group remains a control group and two groups receive one of the AskNature stimuli variants. The results show variable success for increasing variety – ranging from status quo to a 108.2% increase in variety at the physical principle level – indicating that using a functional category from AskNature has the potential to support conceiving more dissimilar idea set on the most abstract levels of the genealogy tree. However such performance is not guaranteed for each challenge.

关键词： Bio-ideation Biologically-Inspired Dessign AskNature experiment variety

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FDMO: Feature assisted direct monocular odometry

arXiv

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arXiv 2018年

作者： Younes, Georges Asmar, Daniel Zelek, John System Design Department in the Faculty of Engineering University of Waterloo 200 University Ave W Waterloo Canada Mechanical Engineering Department Faculty of Engineering and Architecture American University of Beirut Riad El Solh Beirut Lebanon

Visual Odometry (VO) can be categorized as being either direct or feature based. When the system is calibrated photometrically, and images are captured at high rates, direct methods have shown to outperform feature-based ones in terms of accuracy and processing time;they are also more robust to failure in feature-deprived environments. On the downside, Direct methods rely on heuristic motion models to seed the estimation of camera motion between frames;in the event that these models are violated (e.g., erratic motion), Direct methods easily fail. This paper proposes a novel system entitled FDMO (Feature assisted Direct Monocular Odometry), which complements the advantages of both direct and featured based techniques. FDMO bootstraps indirect feature tracking upon the sub-pixel accurate localized direct keyframes only when failure modes (e.g., large baselines) of direct tracking occur. Control returns back to direct odometry when these conditions are no longer violated. Efficiencies are introduced to help FDMO perform in real time. FDMO shows significant drift (alignment, rotation & scale) reduction when compared to DSO & ORB SLAM when evaluated using the TumMono and EuroC datasets. Copyright © 2018, The Authors. All rights reserved.

关键词： Vision

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Bald eagle search algorithm for solving a three-dimensional path planning problem

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Mathematical Biosciences and Engineering 2024年第2期21卷 2856-2878页

作者： Zhang, Yunhui Zhou, Yongquan Chen, Shuangxi Xiao, Wenhong Wu, Mingyu School of Internet Jiaxing Vocational and Technical College Jiaxing314036 China College of Artificial Intelligence Guangxi University for Nationalities Nanning530006 China Xiangsihu College of Guangxi University for Nationalities Nanning532100 China Guangxi Key Laboratories of Hybrid Computation and IC Design Analysis Nanning530006 China Institute of System Architecture and Network Security Zhejiang University Hangzhou310058 China Jiaxing Key Laboratory of Industrial Internet Security Jiaxing Vocational and Technical College Jiaxing314036 China Faculty of Electrical Engineering Universiti Teknologi Malaysia Johor Bahru81310 Malaysia

Three-dimensional path planning refers to determining an optimal path in a three-dimensional space with obstacles, so that the path is as close to the target location as possible, while meeting some other constraints, including distance, altitude, threat area, flight time, energy consumption, and so on. Although the bald eagle search algorithm has the characteristics of simplicity, few control parameters, and strong global search capabilities, it has not yet been applied to complex three-dimensional path planning problems. In order to broaden the application scenarios and scope of the algorithm and solve the path planning problem in three-dimensional space, we present a study where five three-dimensional geographical environments are simulated to represent real-life unmanned aerial vehicles flying scenarios. These maps effectively test the algorithm’s ability to handle various terrains, including extreme environments. The experimental results have verified the excellent performance of the BES algorithm, which can quickly, stably, and effectively solve complex three-dimensional path planning problems, making it highly competitive in this field. ©2024 the Author(s), licensee AIMS Press.

关键词： Motion planning

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A Service-Environment-Oriented Shape Reconstruction Method of Vehicle-borne Active Phased Array Antenna

A Service-Environment-Oriented Shape Reconstruction Method o...

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2021 CIE International Conference on Radar, Radar 2021

作者： Xu, Pengying Xu, Xiaoxian Wang, Yan Teng, Yucheng Wang, Congsi Ge, Dongming Kang, Mingkui Yuan, Shuai Wang, Xuezi Xidian University Key Laboratory of Electronic Equipment Structure Design Ministry of Education Xi'an China School of Information and Control Engineering Xi'an University of Architecture and Technology Xi'an China Beijing Institute of Spacecraft System Engineering Beijing China No.771 Institute of China Aerospace Science and Technology Corporation Xi'an China China Electronics Technology Group Corporation No.38 Research Institute Hefei China

ISBN: (纸本)9781665498142

Modern electronic equipment has been moving towards large scale and increased complexity. Affected by such factors as complex working environments, the performance of a large number of structures in engineering is degraded or even destroyed. Therefore, structure shape estimation is of great significance. The complexity of the structure, however, makes it impossible for a single deformation evaluation algorithm to evaluate the structure comprehensively and accurately. In this paper, a modal-approximate curve (M-AC) method, using a small amount of strain data, is proposed for block shape estimation of structures. Three typical wind load experiments are carried out on the finite element model (FEM) of the vehicle-borne active phased array antenna, and the effectiveness of the algorithm is verified. Under the wind speed of 28 (m/s), the deformation of antenna front is 104.70 mm and the estimation accuracy of the M-AC method is 87.43%, which is 16.47% higher than that of the modal approach. The results indicate that the estimated displacement is consistent well with the simulation results of the finite element method. © 2021 IEEE.

关键词： active phased array antenna Fiber Bragg grating mode shapes sensor shape estimation

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A systematic Review of Urban design and Computer Modelling Methods to Support Smart City Development in a Post-COVID Era

A Systematic Review of Urban Design and Computer Modelling M...

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International Conference on Green Building, Civil Engineering and Smart City, GBCESC 2022

作者： Yang, Liu Iwami, Michiyo Chen, Yishan Wu, Mingbo van Dam, Koen H. School of Architecture Southeast University Nanjing China Department of Infectious Disease Faculty of Medicine Imperial College London London United Kingdom Architecture and Urban Design Research Center China IPPR International Engineering Co. Ltd Beijing China University of Chinese Academy of Sciences Beijing China State Key Laboratory of Resources and Environmental Information System Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing China Centre for Process Systems Engineering Department of Chemical Engineering Imperial College London London United Kingdom

ISBN: (纸本)9789811952166

The COVID-19 pandemic emphasised the need for decision-support tools to assist urban designers in building resilient and smart cities. Therefore, a multi-disciplinary systematic review was conducted following the PRISMA guideline to identify papers relevant for selecting appropriate methodologies that can be applied to build decision-support tools for resilient cities. This paper presents a list of 109 key references, selected from 8,737 records found from the searches, and identified major research themes, fundamental design interventions, and computer modelling techniques. We extracted six groups of interventions categorised by different scales of action: from an individual, crowds (social distancing and travel-related interventions), to a building, a neighbourhood/district, and a city. In addition, there are three sorts of computational modelling approaches, i.e., computer simulation, statistical models, and AI algorithms. Most of the studies developed models for predictive purposes, and 28% of the modelling studies built models for descriptive purposes. This work intends to empower urban designers and planners to overcome and get prepared for unpredictable disasters in pursuit of resilient and smart cities, particularly in the post-pandemic world. This review enables them to quickly find relevant papers as well as suitable methodologies and tools for a particular research purpose. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Smart city

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The central office of the ICT Era: Agile, smart, and autonomous

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Ericsson Review (English Edition) 2016年第2期93卷 18-28页

作者： Kavak, Nail Wilkinson, Andrew Larkins, John Patil, Sunil Frazier, Bob System and Technology Group Development Unit IP United States IP networking Ericsson's Development Unit IP United States Ericsson's IP Design Unit San JoseCA United States Ericsson's Development Unit IP United States IP system architecture Ericsson's Business Unit Cloud and IP United States

Network architecture is undergoing a massive transformation, which in turn is having an impact on the role of the central office. Enabled primarily by virtualization and SDN technologies, network architectures are becoming more flexible, with improved programmability and a greater degree of automated behavior. In combination with technology enablers such as the increased reach offered by fiber, automation of provisioning and orchestration, and improvements in the performance of generic hardware, network transformation has provided operators with the opportunity to rationalize and consolidate infrastructure. The next generation central office will introduce intelligence and service agility into the network through disaggregation. © Copyright 2016 Wolters Kluwer Health, Inc. All rights reserved.

关键词： Network architecture

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The architecture of Onboard Intellectual Control system for Autonomous Researching Devices

The Architecture of Onboard Intellectual Control System for ...

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Russia and Pacific Conference on Computer Technology and Applications (RPC)

作者： S. Kabak Il'ya A. Sheptunov Sergey M. Solomentsev Jury V. Sukhanova Nataly S. Sannikov Aleksandr S. Nakhushev Rakhim Computer Control Architecture Sub-Department MSTU “STANKIN” Moscow Russia principal of Institute for Design and Technological Informatics of RAS Moscow Russia Chiff of Information technogy and computer system SUB-departament MSTU “STANKIN” Moscow Russia Computer control architecture sub-department MSTU “STANKIN” Moscow Russia Academy of Sciences (IDTI RAS) Institute for Design Technological Informatics of Russian Moscow Russia

ISBN: (纸本)9781538675328

The goal of science is the new knowledge mining and data processing. There are some fields of activity in which there is impossible for man to be presented (for example, in space and world ocean). The autonomous researching devices are needed for knowledge acquisition in these fields of activity. The architecture of the on-board control system for the autonomous device was designed. The control system was designed with realization on the module principles, used algorithm and intelligent modules.

关键词： Control systems Neurons Training Computer architecture Neural networks Artificial intelligence Genetic algorithms

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