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7th international conference on Imaging for Crime Detection and Prevention, ICDP 2016

作者： Khan, Tariq Biglari-Abhari, Morteza Gimel'farb, Georgy Dept. of Computer Science University of Auckland New Zealand Dept. of Electrical and Computer Engineering University of Auckland New Zealand

ISBN: (纸本)9781785614019

Fast and accurate reconstruction of a 3D scene, e.g. for tracking and recognition of subject or predicting crowd behaviour, with robust real-time intelligent vision systems is essential for crime detection and prevention. Depth contours characterising a high resolution stereo depth map can play an important role. Our depth contour generation designed for the Symmetric Dynamic programming Stereo (SDPS) depth map, called the Salmon algorithm can generate number of critical contours in real-time. SDPS algorithm is one of the highest throughput stereo matching techniques, being available on both the GPU and FPGA hardware platforms. We build ground truths to check the accuracy of the Salmon contours and compare the performance to a conventional border follower algorithm available in the OpenCV library. Experimental results show that our algorithm is as accurate as the OpenCV border follower but it is more than six times faster. © 2016 Institution of Engineering and Technology. All rights reserved.

关键词： Dynamic programming

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Jupyter extension for Creating CAD designs and their subsequent analysis by the finite element method 7

Jupyter extension for Creating CAD designs and their subsequ...

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7th international conference Distributed Computing and Gridtechnologies in Science and Education, GRID 2016

作者： Iakushkin, O. Kondratiuk, A. Sedova, O. Grishkin, V. Saint Petersburg State University 7/9 Universitetskaya emb. Saint-Petersburg199034 Russia

Creating designs in CAD and performing their stress-strain analysis are complex computational tasks. their successful solution depends on a number of prerequisites: availability of large computational power;comprehensive knowledge of physical and mathematical computing;and solid skills of programming and working in a variety of separate software products that are not integrated to each other directly. the paper presents a system aimed at CAD models development and verification from the ground up. the system integrates geometry construction, mesh model creation and deformation analysis into a uniform computing environment operating as a SaaS solution. It is based exclusively on open source software and allows to use the Python programming language and SALOME, GMSH, FEniCS and ParaView libraries. the system's architecture and certain issues of working with libraries are discussed. the paper also presents a browser-based tool for CAD design creation and analysis, which tool is the front end of the software product we created. © 2016 Iakushkin O. O., Kondratiuk A. N., Sedova O. S, Grishkin V. M.

关键词： Python

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7th international conference on Computational Logistics, ICCL 2016

7th International Conference on Computational Logistics, ICC...

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7th international conference on Computational Logistics, ICCL 2016

ISBN: (纸本)9783319448954

the proceedings contain 29 papers. the special focus in this conference is on Container Terminals, Maritime Transportation, Intermodal Transport, Location, Routing, Supply Chain Management and Supply Chain Management. the topics include: A multi-product maritime inventory routing problem with undedicated compartments;a MIP based local search heuristic for a stochastic maritime inventory routing problem;2D-packing with an application to stowage in Roll-On Roll-Off liner shipping;a vessel pickup and delivery problem from the disruption management in offshore supply vessel operations;agent-based support for container terminals to make appointments with barges;a logic-based benders decomposition approach to improve coordination of inland vessels for inter-terminal transport;scenarios for collaborative planning of inter-terminal transportation;solving the robust container pre-marshalling problem;a cooperative approach to dispatching and scheduling twin-yard cranes in container terminals;online and offline container purchasing and repositioning problem;optimizing train load planning: review and decision support for train planners;analysis of cost allocation techniques for freight bundling networks in intermodal transport;service and transfer selection for freights in a synchromodal network;a revenue management approach for network capacity allocation of an intermodal barge transportation system;lore, a decision support tool for location, routing and location-routing problems;two echelon location routing problem with simultaneous pickup and delivery;mixed integer programming formulations and comparative analysis;vehicle routing for fleets with electric- and combustion-powered vehicles;the bi-objective k-dissimilar vehicle routing problem and improving production logistics through materials flow control and lot splitting.

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A Plasma Reactor for the Synthesis of High-Temperature Materials: Electro thermal, Processing and Service Life Characteristics 7

A Plasma Reactor for the Synthesis of High-Temperature Mater...

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7th international Scientific Practical conference on Innovative Technologies in Engineering

作者： Galevskiy, G. V. Rudneva, V. V. Galevskiy, S. G. Tomas, K. I. Zubkov, M. S. Siberian State Ind Univ Novokuznetskul Kirova42 Novokuznetsk 654007 Russia Natl Mineral Resources Univ Univ Mines 21-th Line Vasilievsky Isl2 St Petersburg 199106 Russia Natl Res Tomsk Polytechn Univ Yurga Inst Technol Affiliate Yurgaul Leningradskaya26 Kemerovo 652055 Russia

the three-jet direct-flow plasma reactor with a channel diameter of 0.054 m was studied in terms of service life, thermal, technical, and functional capabilities. It was established that the near-optimal combination of thermal efficiency, required specific enthalpy of the plasma-forming gas and its mass flow rate is achieved at a reactor power of 150 kW. the bulk temperature of plasma flow over the rector of 12 gauges long varies within 5500 divided by 3200 K and the wall temperature within 1900 divided by 850 K, when a cylinder from zirconium dioxide of 0.005 m thick is used to thermally insulate the reactor. the specific electric power reaches a high of 1214 MW/m(3). the rated service life of electrodes is 4700 hours for a copper anode and 111 hours for a tungsten cathode. the projected contamination of carbides and borides with electrode-erosion products doesn't exceed 0.0001% of copper and 0.00002% of tungsten.

关键词： Electrodes

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2D-packing with an application to stowage in Roll-on Roll-off liner shipping 7th

2D-packing with an application to stowage in Roll-on Roll-of...

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7th international conference on Computational Logistics, ICCL 2016

作者： Hansen, Jone R. Hukkelberg, Ivar Fagerholt, Kjetil Stålhane, Magnus Rakke, Jørgen G. Department of Industrial Economics and Technology Management Norwegian University of Science and Technology Trondheim Norway Trondheim Norway Wallenius Wilhelmsen Logistics Lysaker Norway

ISBN: (纸本)9783319448954

Roll-on/Roll-off (RoRo) ships represent the primary source for transporting vehicles and other types of rolling material over long distances. In this paper we focus on operational decisions related to stowage of cargoes for a RoRo ship voyage visiting a given set of loading and unloading ports. By focusing on stowage on one deck on board the ship, this can be viewed as a special version of a 2-dimensional packing problem with a number of additional considerations, such as one wants to place vehicles that belong to the same shipment close to each other to ease the loading and unloading. Another important aspect of this problem is shifting, which means temporarily moving some vehicles to make an entry/exit route for the vehicles that are to be loaded/unloaded at the given port. We present several versions of a new mixed integer programming (MIP) formulation for the problem. Computational results show that the model provides good solutions on small sized problem instances. © Springer international Publishing Switzerland 2016.

关键词： Integer programming

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Grieving in the 21st Century: Social media's role in facilitating supportive exchanges following community-level traumatic events 16

Grieving in the 21st Century: Social media's role in facilit...

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7th international conference on Social Media and Society, SMSociety 2016

作者： Glasgow, Kimberly Vitak, Jessica Fink, Clay Tausczik, Yla Johns Hopkins University Applied Physics Laboratory LaurelMD United States College of Information Studies University of Maryland College ParkMD United States

ISBN: (纸本)9781450339384

In the aftermath of a traumatic mass casualty event, a community's resources are strained, while its needs for tangible, emotional, and informational support are elevated. Social media may serve to bridge the distance between the locally affected community and those outside who are willing to offer support. this exploratory study uses Twitter as a lens for examining gratitude for support in the aftermath of disaster. We examine how social media may provide new opportunities for support to be exchanged and networks to be formed in the aftermath of a traumatic event. By analyzing tweets originating from Newtown, Connecticut after the school shooting, we identify and describe six categories of support exchanged through Twitter, including two categories (symbolic and role-based) that have not been extensively discussed in the social support literature - but are valued by the community. Each type of support network shows distinct structural characteristics and temporal variance. © Copyright is held by the owner/author(s). Publication rights licensed to ACM.

关键词： Computer programming

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JParEnt: Parallel entropy decoding for JPEG decompression on heterogeneous multicore architectures

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CONCURRENCY AND COMPUTATION-PRACTICE & EXPERIENCE 2017年第15期29卷

作者： Sodsong, Wasuwee Jung, Minyoung Park, Jinwoo Burgstaller, Bernd Yonsei Univ Dept Comp Sci Seoul South Korea

the JPEG format employs Huffman codes to compress the entropy data of an image. Huffman codewords are of variable length, which makes parallel entropy decoding a difficult problem. To determine the start position of a codeword in the bitstream, the previous codeword must be decoded first. We present JParEnt, a new approach to parallel entropy decoding for JPEG decompression on heterogeneous multicores. JParEnt conducts JPEG decompression in two steps: (1)an efficient sequential scan of the entropy data on the CPU to determine the start-positions (boundaries) of coefficient blocks in the bitstream, followed by (2)a parallel entropy decoding step on the graphics processing unit (GPU). the block boundary scan constitutes a reinterpretation of the Huffman-coded entropy data to determine codeword boundaries in the bitstream. We introduce a dynamic workload partitioning scheme to account for GPUs of low compute power relative to the CPU. this configuration has become common with the advent of SoCs with integrated graphics processors (IGPs). We leverage additional parallelism through pipelined execution across CPU and GPU. For systems providing a unified address space between CPU and GPU, we employ zero-copy to completely eliminate the data transfer overhead. Our experimental evaluation of JParEnt was conducted on six heterogeneous multicore systems: one server and two desktops with dedicated GPUs, one desktop with an IGP, and two embedded systems. For a selection of more than 1000JPEG images, JParEnt outperforms the SIMD-implementation of the libjpeg-turbo library by up to a factor of 4.3x, and the previously fastest JPEG decompression method for heterogeneous multicores by up to a factor of 2.2x. JParEnt's entropy data scan consumes 45% of the entropy decoding time of libjpeg-turbo on average. Given this new ratio for the sequential part of JPEG decompression, JParEnt achieves up to97% of the maximum attainable speedup (95% on average). On the IGP-based desktop platform,

关键词： JPEG decoding entropy decoding prefix codes heterogeneous multicores GPU programming

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Towards a software-enabled environment promoting accessible learning in higher education 2016

Towards a software-enabled environment promoting accessible ...

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7th international conference on Software Development and Technologies for Enhancing Accessibility and Fighting Info-Exclusion, DSAI 2016

作者： Lima, Celson Pinheiro, Cassio Sarraipa, João Federal University of Western Pará Campus Tapajós Santarém PA Brazil UNINOVA-GRIS Centre of Technology and Systems Portugal

ISBN: (纸本)9781450347488

this paper introduces the vision guiding the development of a software-enabled environment aiming to help the communities that cannot easily have access to and be part of the higher education system. these communities are not only people with the more obvious accessibility problems but it may also include Indians (with communication/cultural problems to enter and perform well in universities made by and to white people) and other groups. the software-enabled environment previously mentioned, named Empodera, is a small part of a bigger infrastructure called CADEP, which represents the main goal pursued by the ACACIA project. ACACIA motivations are briefly introduced in this paper;the CADEP is presented, followed by a more deep discussion about Empodera. the CADEP, as a whole, is to be assessed in 3 countries of Latin America (LA), but Empodera will also have specific evaluations in the Amazon area in Brazil, involving community of Indians who want to be or are already students at the Federal University of Western Pará (UFOPA). this evaluation, some conclusions and future challenges close the paper. © 2016 ACM.

关键词： Computer programming

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Architecture of Absurd 10th

Architecture of Absurd

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10th international conference on Universal Access in Human-Computer Interaction held as part of 18th international conference on Human-Computer Interaction (HCI international)

作者： Fross, Klaudiusz Ujma-Wasowicz, Katarzyna Wala, Ewa Winnicka-Jaslowska, Dorota Guminska, Anna Sitek, Michal Sempruch, Agata Silesian Tech Univ Fac Architecture Ul Akad 7 PL-44100 Gliwice Poland

ISBN: (纸本)9783319402505;9783319402499

Ergonomy is not automatically attributed for an architectonic projects. Construction regulations and norms partially guarantee ergonomic solutions. But still, there is a free, great field for creative work (visions, ideas) for designer. Architects can, but do not have to, use ergonomic principles in projects. they can also freely omit them. We know, that high quality ergonomic buildings are functioning, in built environment, as well as unergonomic and ineffective ones, socalled "ill". Why is it like that? Why architects are enabled to design unergonomic, "ill" objects? Why the investor agrees to inefficient building? Is such an object a success or a failure? Authors think that this subject is extremely current, because it makes us notice, a big amount of basic project errors in buildings. the article presents and discusses examples of pleasing from the outside but non-ergonomic, ineffective and non-functional buildings - the masterpieces of architecture. this type of design is called - "the architecture of absurd" (Fross 2015). It also indicates that using a methodology of qualitative research, evaluate the design at the stage of concept and programming. Design with the principles of ergonomics guarantees the future quality of the object [5].

关键词： Architectural design Ergonomics in the design Building quality evaluation Revitalisation Ergonomy of space Supplementary buildings Energy-efficient architecture

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Optimizing the Performance-Related Configurations of Object-Relational Mapping Frameworks Using a Multi-Objective Genetic Algorithm 16

Optimizing the Performance-Related Configurations of Object-...

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7th ACM/SPEC international conference on Performance Engineering (ICPE)

作者： Singh, Ravjot Bezemer, Cor-Paul Shang, Weiyi Hassan, Ahmed E. Queens Univ SAIL Kingston ON K7L 3N6 Canada Concordia Univ Dept Comp Sci & Software Engn Montreal PQ Canada

ISBN: (纸本)9781450340809

Object-relational mapping (ORM) frameworks map low-level database operations onto a high-level programming API that can be accessed from within object-oriented source code. ORM frameworks often provide configuration options to optimize the performance of such database operations. However, determining the set of optimal configuration options is a challenging task. through an exploratory study on two open source applications (Spring PetClinic and ZK), we find that the difference in execution time between two configurations can be large. In addition, both applications are not shipped with an ORM configuration that is related to performance: instead, they use the default values provided by the ORM framework. We show that in 89% of the 9 analyzed test cases for PetClinic and in 96% of the 54 analyzed test cases for ZK, the default configuration values supplied by the ORM framework performed significantly slower than the optimal configuration for that test case. Based on these observations, this paper proposes an approach for automatically finding an optimal ORM configuration using a multi-objective genetic algorithm. We evaluate our approach by conducting a case study of Spring PetClinic and ZK. We find that our approach finds near-optimal configurations in 360-450 seconds for PetClinic and in 9-12 hours for ZK. these execution times allow our approach to be executed to find an optimal configuration before each new release of an application.

关键词： object-relational mapping performance performance configuration optimization

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