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Construction Research Congress 2012: Construction Challenges in a Flat World

作者： Zou, Junhao Lu, Ming Karumudi, Rambabu Shen, Xuesong Design and Construction Drainage Services the City of Edmonton Edmonton AB T5M 3B8 Canada Department of Civil and Environmental Engineering University of Alberta Edmonton AB T6G 2W2 Canada Department of Electrical and Computer Engineering University of Alberta Edmonton AB T6G 2W2 Canada

ISBN: (纸本)9780784412329

The need of sustainable urbanization drives construction engineers to explore the underground space to improve quality of life, meet with the challenges of population growth, and satisfy increasing infrastructure demands for utility pipelines and subways. However, unexpected obstructions or heterogeneous ground conditions make underground construction a risky operation, increasing construction cost while presenting additional safety hazards. Examples include (1) high pressure underground water stops a tunnel boring machine (TBM);(2) breaking an existing water main leads to flooding the downtown area;and (3) hitting an unexpected gas line causes an explosion. To a certain extent, all of those accidents can be attributable to the lack of cost-effective technology for detecting buried underground obstacles. The current practices such as geotechnical test holes and ground penetration radars (GPR) have their limitations in revealing underground situations. Meanwhile, the emerging technology of ultra-wide band (UWB) radar holds the potential to provide a cost-effective, non-destructive detection method. In this paper, a critical review of current practices and established methodologies is given. The functionality, working mechanism and application potential of UWB radar technologies in underground construction are described. Preliminary lab testing results are presented. Research findings are summarized and further research plans are discussed in conclusions. © 2012 ASCE.

关键词： Cost effectiveness

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Simulation of tactile sensors using soft contacts for robot grasping applications

Simulation of tactile sensors using soft contacts for robot ...

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IEEE International Conference on Robotics and Automation (ICRA)

作者： Sami Moisio Beatriz León Pasi Korkealaakso Antonio Morales Centre of Computational Engineering and Integrated Design (CEID) at the Department of Machine Technology Lappeenranta University of Technology Lappeeranta Finland Robotic Intelligence Laboratory at the Department of Computer Science and Engineering Universitat Jaume I Castellon Spain

In the context of robot grasping and manipulation, realistic simulation requires accurate modeling of contacts between bodies and, in a practical level, accurate simulation of touch sensors. This paper addresses the problem of simulating a tactile sensor considering soft contacts and full friction description. The developed model consists of a surface contact patch described by a mesh of contact elements. For each element, a full friction description is built considering stick-slip phenomena. The developed sensor model is implemented using OpenRAVE and used to perform typical tasks related to tactile sensors. The performance of the simulated sensor is then compared to a real one. It is also demonstrated how it can be integrated on the simulation of a complete robot grasping system.

关键词： Tactile sensors Force Friction Grasping Geometry

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Network reconfiguration and restoration planning based on a heuristic rule base for teaching distribution system operations

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Advances in Information Sciences and Service Sciences 2012年第6期4卷 352-359页

作者： Wu, Ying-Ming Wang, Hsueh-Wu Hsiao, Ying-Tung Hu, Che-Hou Department of Electrical Engineering Tamkang University 25137 Taipei Taiwan Department of Digital Technology Design National Taipei University of Education 10671 Taipei Taiwan Department of Computer Science National Taipei University of Education 10671 Taipei Taiwan

This work presents a distribution system simulation program for teaching switching operations for network reconfiguration and restoration planning. Heuristic strategies are also applied to determine the process of the switch operations. These heuristic rules are gained from an experienced dispatcher of the control division of Taipower Company in Taiwan. Several suggested experiments, including various faulty areas and different loading cases, are also proposed in this simulation.

关键词： Restoration

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Identification of smartphone-image source and manipulation 12

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25th International Conference on Industrial engineering and Other Applications of Applied Intelligent Systems, IEA/AIE 2012

作者： Liu, Qingzhong Li, Xiaodong Chen, Lei Cho, Hyuk Cooper, Peter A. Chen, Zhongxue Qiao, Mengyu Sung, Andrew H. Department of Computer Science Sam Houston State University Huntsville TX 77341 United States Biostatistics Epidemiology Research Design Core Center for Clinical and Translational Sciences University of Texas Health Science Center at Houston Houston TX 77030 United States Department of Mathematics and Computer Science South Dakota School of Mines and Technology Rapid City SD 57701 United States Department of Computer Science and Engineering Institute for Complex Additive Systems Analysis New Mexico Tech. Socorro NM 87801 United States

ISBN: (纸本)9783642310867

As smartphones are being widely used in daily lives, the images captured by smartphones become ubiquitous and may be used for legal purposes. Accordingly, the authentication of smartphone images and the identification of post-capture manipulation are of significant interest in digital forensics. In this paper, we propose a method to determine the smartphone camera source of a particular image and operations that may have been performed on that image. We first take images using different smartphones and purposely manipulate the images, including different combinations of double JPEG compression, cropping, and rescaling. Then, we extract the marginal density in low frequency coordinates and neighboring joint density features on intra-block and inter-block as features. Finally, we employ a support vector machine to identify the smartphone source as well as to reveal the operations. Experimental results show that our method is very promising for identifying both smartphone source and manipulations. Our study also indicates that applying unsupervised clustering and supervised classification together (clustering first, followed by classification) leads to improvement in identifying smartphone sources and manipulations and thus provides a means to address the complexity issue of intentional manipulation. © 2012 Springer-Verlag.

关键词： Smartphones

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DYNAMICS AND EMISSION OF MILDLY RELATIVISTIC PLASMA

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International Journal of Modern Physics: Conference Series 2012年第12期ijmpcs卷 1-9页

作者： A. G. AKSENOV R. RUFFINI I. A. SIUTSOU G. V. VERESHCHAGIN Institute for Computer-Aided Design Russian Academy of Sciences Vtoraya Brestskaya 19/18 Moscow 123056 Russia ICRANet p.le della Repubblica 10 65100 Pescara Italy ICRA and University of Rome Sapienza Physics Department p.le A. Moro 5 00185 Rome Italy

Initially optically thick (with τ = 3⋅10 7 ) spherically symmetric outflow consisting of electron-positron pairs and photons is considered. We do not assume thermal equilibrium, and include the two-body processes that occur in such plasma: Möller and Bhabha scattering of pairs, Compton scattering, two-photon pair annihilation, two-photon pair production, together with their radiative three-body variants: bremsstrahlung, double Compton scattering, and three-photon pair annihilation, with their inverse processes. We solve numerically the relativistic Boltzmann equations in spherically symmetric case for distribution functions of pairs and photons. Three epochs are considered in details: a) the thermalization, which brings initially nonequilibrium plasma to thermal equilibrium; b) the self-accelerated expansion, which we find in agreement with previous hydrodynamic studies and c) decoupling of photons from the expanding electron-positron plasma. Photon spectra are computed, and appear to be non thermal near the peak of the luminosity. In particular, the low energy part of the spectrum contain more power with respect to the black body one.

关键词： electron-positron plasma

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Construction of Simulators as a fundamental Element of Organizational Self-awareness

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Procedia Technology 2012年 5卷 224-233页

作者： Carlos Páscoa Nelson Ferreira José Tribolet Department of University Education Portuguese Air Force Academy Sintra Portugal Department of Information Systems and Computer Science Technical University of Lisbon Portugal CODE – Center for Organizational Design & Engineering INOV Rua Alves Redol 9 Lisbon Portugal

One of the predominant features of the human species is the desire to understand and influence the environment and the ability to adapt to it. These features have led humans to create complex social structures. In this complex system it is crucial to control, by any entity, the vital parameters for their optimal functioning, becoming exponential when referring to complex entities such as organizations. Due to the organizations complexity it is important to assess at an early stage its performance. Therefore simulators have a fundamental role in Organizational Self-awareness and help to control the organization's vital parameters. Under the body of knowledge and principles of Organizational engineering, and other theoretical and practical knowledge, this study proposes to highlight the importance of using simulators: i) as a fundamental element of organizational self-awareness, ii) to identify the fundamental elements of an organizational simulator Meta-Model; iii) to identify the essential elements of a simulator developed to assist in the calculation of the number of flying hours per year, wire driver of the Portuguese Air Force planning.

关键词： organizations simulators self-awareness simulation organizational engineering meta-model

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Determining operation schedules of heat recovery ventilators for optimum energy savings in high-rise residential buildings

Determining operation schedules of heat recovery ventilators...

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作者： Kim, Sang-Min Lee, Ji-Hyun Kim, Sooyoung Moon, Hyeun Jun Cho, Jinsoo Institute of Technology and Quality Development Hyundai Engineering and Construction Co. Ltd. Yongin 446-716 Korea Republic of Graduate School of Culture Technology Korea Advanced Institute of Science and Technology Daejeon 305-701 Korea Republic of Department of Housing and Interior Design Yonsei University Seoul 120-749 Korea Republic of Department of Architectural Engineering Dankook University Yongin 448-701 Korea Republic of Department of Computer Engineering Kyungwon University Seongnam 461-701 Korea Republic of

This study examines the influence of heat recovery ventilators (HRVs) on energy savings in high-rise residential buildings to determine optimum operation schedules. Field measurements were conducted in two actual residential buildings, and computer simulations were performed to predict energy savings by the HRVs. Measurement results showed that energy consumption in each building was reduced when the HRVs were operated in line with recommended ventilation rates and comfortable temperature ranges. The HRVs achieved greater savings of energy during winter than summer. Simulation results showed that the HRVs contributed to the annual savings of heating and cooling energy by 9.45% and 8.8%, respectively, when the ventilators were operated continuously for 24 h. More energy was saved as the operating hours of the HRVs increased. The continuous operation of HRVs was effective for the savings of energy and to maintain recommended ventilation rates. The HRVs achieved effective energy savings and maintained necessary ventilation rates in high-rise residential buildings where natural infiltration was minimal, due to tightly sealed building envelopes. This study suggests that the influence of HRVs on the improvement of indoor air quality needs to be examined in conjunction with energy savings by HRVs. © 2011 Elsevier B.V. All rights reserved.

关键词： Energy conservation

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Performance and characteristics of silicon avalanche photodetectors in the C5 process

Performance and characteristics of silicon avalanche photode...

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Midwest Symposium on Circuits and Systems (MWSCAS)

作者： Dennis Montierth Timothy Strand James Leatham Lloyd Linder R. Jacob Baker Department of Electrical and Computer Engineering Boise State University Boise ID USA FLIR Systems Inc. USA Indepentent IC Circuit Design and Systems Consultant

Avalanche photodetectors (APDs) have been fabricated in ON Semiconductor's C5 process without any special process or fabrication steps. The electrical and optical characteristics of APDs, with varying active area and guard ring configurations, are reported in this paper. Also reported are the details and considerations that went into laying out the APDs. It was found that substrate current was negligible and nearly independent of the geometrical shape of the substrate tie-downs around the perimeter of the APD structures. The measured APD breakdown is approximately 14 V. The devices show optical gains in excess of 1,000 at photocurrents of 10 μA.

关键词： Decision support systems Geometrical optics Integrated optics Optical device fabrication Substrates Optical variables measurement

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Effectiveness Index as an Organizational Cockpit Instrument

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Procedia Technology 2012年 5卷 244-253页

作者： Carlos Páscoa Marco Moreira José Tribolet Department of University Education Portuguese Air Force Academy Sintra Portugal Department of Information Systems and Computer Science Technical University of Lisbon Portugal CODE – Center for Organizational Design & Engineering INOV Rua Alves Redol 9 Lisbon Portugal

The current national and international scene is facing multiple crises. The one that stands out and greatly affects the organization are crises of an economic nature. Given this national and international situation, we are now living in a time of “rationalization of costs” where organizations still continue to nobly and effectively perform their missions, in spite of budget cuts. To accomplish it without the slightest fault, organizations must have the ability to adapt to reality and create mechanisms that help catching up. One of those mechanisms can be finding indicators that can assess the organization's effectiveness in a strategic way. The research described in this paper aims to develop and define a logical calculation to obtain the Global Organizational Effectiveness Index Subsystem (GOEIS), that is supported by a quantitative and qualitative scale (one number, one scale). The purpose of this “ organizational cockpit ” tool is to compare execution to planning, in some defined areas, to verify if the proposed objectives of the organization are being met and, therefore, to improve management and performance while increasing effectiveness and self-awareness.

关键词： Effectiveness Rationalization of Costs Benefits Proposed Objectives Performance Management Effectiveness

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A comparison of implications in orthomodular quantum logic-morphological analysis of quantum logic

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International Journal of Mathematics and Mathematical Sciences 2012年第1期2012卷

作者： Fujio, Mitsuhiko Department of Systems Design and Informatics Faculty of Computer Science and Systems Engineering Kyushu Institute of Technology Iizuka-shi 820-8502 Japan

Morphological operators are generalized to lattices as adjunction pairs (Serra, 1984;Ronse, 1990;Heijmans and Ronse, 1990;Heijmans, 1994). In particular, morphology for set lattices is applied to analyze logics through Kripke semantics (Bloch, 2002;Fujio and Bloch, 2004;Fujio, 2006). For example, a pair of morphological operators as an adjunction gives rise to a temporalization of normal modal logic (Fujio and Bloch, 2004;Fujio, 2006). Also, constructions of models for intuitionistic logic or linear logics can be described in terms of morphological interior and/or closure operators (Fujio and Bloch, 2004). This shows that morphological analysis can be applied to various non-classical logics. On the other hand, quantum logics are algebraically formalized as orhomodular or modular ortho-complemented lattices (Birkhoff and von Neumann, 1936;Maeda, 1980;Chiara and Giuntini, 2002), and shown to allow Kripke semantics (Chiara and Giuntini, 2002). This suggests the possibility of morphological analysis for quantum logics. In this article, to show an efficiency of morphological analysis for quantum logic, we consider the implication problem in quantum logics (Chiara and Giuntini, 2002). We will give a comparison of the 5 polynomial implication connectives available in quantum logics. © 2012 Mitsuhiko Fujio.

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