检索结果-内蒙古大学图书馆

Support for parallel computing in julia language 7

Support for parallel computing in julia language

7th international conference "Information and Telecommunication Technologies and Mathematical Modeling of High-Tech Systems", ITTMM 2017

作者： Kulyabov, Dmitry S. Gevorkyan, Migran N. Korolkova, Anna V. Sevastianov, Leonid A. Department of Applied Probability and Informatics Peoples' Friendship University of Russia 6 Miklukho-Maklaya St. Moscow117198 Russia Joint Institute for Nuclear Research Laboratory of Information Technologies 6 Joliot-Curie Dubna Moscow region141980 Russia Joint Institute for Nuclear Research Bogoliubov Laboratory of Theoretical Physics 6 Joliot-Curie Dubna Moscow region141980 Russia

the purpose of this paper is a brief review of tools for parallel computing implemented in the current version of the Julia Language. Julia is a young promising language designed for scientific programming. Before describing directly the parallel programming capabilities of Julia we give a small overview of the main features of the language. We describe the main goals pursued by the authors of the language when it was created, and the ideology that they espoused. Separately discussed the scientific focus of Julia, features that make the language convenient for the needs of mathematical modelling, handling big data and intensive numerical computing. Separately discussed such a feature as Julia's multiple dispatch. this mechanism of language paying a lot of attention. Most built-in functions and operators using multiple dispatch. In the second part of the paper we turn to the description of parallel programming. Julia is under active development, so support for parallel computing will be expanded, and the existing mechanisms may change. However, now Julia provides enough capabilities for writing quite complex programs using parallel computing. the basis for concurrency are processes (parallelism based on threads is not yet available). We describe the basic functions and macros that allow you to parallelize the execution of the functions, cycles and separate blocks of code. As the basis for presentation used the official guide and also the experience obtained by the authors in the process of using language. © Copyright 2017 for the individual papers by the papers' authors.

关键词： Parallel programming

来源：评论

学校读者我要写书评

暂无评论

Empirical Studies in Decision Rule-Based Flexibility Analysis for Complex Systems Design and Management 7

Empirical Studies in Decision Rule-Based Flexibility Analysi...

引用

7th international conference on Complex Systems Design and Management (CSD and M)

作者： Cardin, Michel-Alexandre Jiang, Yixin Lim, Terence Natl Univ Singapore Dept Ind & Syst Engn Block E1A 06-251 Engn Dr 2 Singapore 117576 Singapore

ISBN: (纸本)9783319491035;9783319491028

this paper presents the results of human subject experiments focusing on the role of decision rules in the study of flexibility and real options analysis (ROA) in design and management of complex engineering systems. Decision rules are heuristics-based triggering mechanisms that help determine the ideal conditions for exercising flexibility in system operations. In contrast to standard ROA based on dynamic programming, decision rules can be parameterized as decision variables, and therefore capture the decision-making process based on specific realizations of the main uncertainty drivers affecting system performance. Similar to standard ROA, a decision rule approach can be used to quantify the benefits of flexibility in early conceptual design studies, and help identifying the best flexible systems design concepts before a more detailed design phase. While many studies demonstrate expected lifecycle performance improvement stemming from a decision-rule based approach as compared to standard design and ROA techniques, very few studies show experimentally their effectiveness in managing flexible engineering systems. this paper presents the results of controlled human-subject experiments involving thirty-two participants evaluating a training procedure in a simulation game environment. the controlled study show that a stochastically optimal flexible strategy combined with an initial policy for the system configuration can improve significantly the expected coverage rate of medical emergencies. these provide insights for further research, development and evaluation of flexible systems design and management strategies for complex engineering systems.

关键词： Dynamic programming

来源：评论

学校读者我要写书评

暂无评论

7th international conference on Nanomaterials by Severe Plastic Deformation

引用

IOP conference Series: Materials Science and Engineering 2017年第1期194卷

作者： Liao, X.Z. Estrin, Y. School of Aerospace Mechanical and Mechatronic Engineering University of Sydney SydneyNSW2006 Australia Department of Materials Science and Engineering Monash University ClaytonVIC3800 Australia Laboratory of Hybrid Nanostructured Materials NUST MISIS Moscow119049 Russia

Severe plastic deformation (SPD) has arguably been the most effective top-down approach to producing bulk nanostructured materials from more conventional, coarse-grained ones. During SPD processing, a giant shear deformation of a material is combined with very high hydrostatic pressure to produce ultrafine (< 1 μm) or nanocrystalline (< 100 nm) grain structure. Despite the huge strain involved, popular SPD techniques practically do not change the dimensions of a work-piece, which makes them very attractive for future industry-scale applications. By appropriately choosing SPD processing parameters that give rise to desirable microstructure, one can produce materials with exceptional mechanical properties and in many cases unusual functional characteristics. A series of international events briefly referred to as NanoSPD conferences have become major forums for the growing community of researchers exploring the potential of severe plastic deformation as a means of producing bulk ultrafine-grained or nanostructured materials. the 7th international conference on Nanomaterials by Severe Plastic Deformation in Sydney (2-7 July 2017) is the seventh in this series of conferences held on a triennial basis. It follows the conferences that took place in Moscow (1999), Vienna (2002), Fukuoka (2005), Goslar (2008), Nanjing (2011), and Metz (2014). NanoSPD conferences have provided an important platform for discussion of a wealth of challenging scientific problems and new technological developments in the NanoSPD area. these Proceedings contain a selection of peer-reviewed papers presented at NanoSPD7 that cover the major themes of the conference. these include SPD processing techniques as well as microstructures, deformation mechanisms and properties of SPD-processed materials. Naturally, mechanical properties figure in the Proceedings most prominently, but functional properties, including biodegradation and biocompatibility, are represented as well. A number of articles are ded

关键词：

来源：评论

学校读者我要写书评

暂无评论

A hybrid GA — Interval linear programming implementation for microgrid relay coordination considering different fault locations

A hybrid GA — Interval linear programming implementation fo...

引用

international conference on Power Systems (ICPS)

作者： S T P Srinivas K. Shanti Swarup Indian Institute of Technology Madras Chennai Tamil Nadu IN Departmenl of Electrical Engineering IIT Madras

this paper proposes hybrid Genetic Algorithm (GA) - Interval Linear programming (ILP) approach to optimal relay coordination problem for microgrids. Relay coordination in microgrids is complex because of varied and bidirectional fault currents because of the existence of Distributed Generation (DG). Overcurrent relays are the feasible and economic choice of protection for meshed distribution systems. the coordinated relay settings must account for various possible fault scenarios in both grid connected and isolated microgrid modes of operation. Inadequate fault current levels from grid connected to the isolated mode are the major cause of protection miscoordination. this paper systematically formulates the relay coordination problem for microgrids as a linear interval optimization problem and introduces a new method of solution using hybrid GA - ILP method. the challenge in using GA to find the optimum in less number of iterations and the feasibility of ILP method to include various fault scenarios as “uncertain but bounded” intervals are combined to find the optimal overcurrent relay settings. the results show the effectiveness of proposed method. the programming is done using optimization tool box available in Matlab.

关键词： Relays Genetic algorithms Microgrids Optimization Linear programming Fault location Fault currents

来源：评论

学校读者我要写书评

暂无评论

Patern candidate discovery and parallelization techniques 29

Patern candidate discovery and parallelization techniques

引用

29th Symposium on the Implementation and Application of functional programming Languages, IFL 2017

作者： Tóth, Melinda Bozó, István Kozsik, Tamás ELTE Eötvös Loránd University Budapest Hungary

ISBN: (纸本)9781450363433

Parallel computations in a program can be expressed conveniently, at a high level of abstraction, using parallel patterns such as task farm, pipeline or divide-and-conquer. In order to transform a sequential program into a pattern-based parallel one, the software developer may want to apply refactoring transformations on it. this tutorial explains a methodology to perform tool supported parallelization of programs by presenting how to use a specific static source code analysis and transformation system for Erlang. A key element of the approach is pattern candidate discovery, a static analysis technique to identify code fragments that can be refactored into a parallel pattern. © 2017 Copyright held by the owner/author(s).

关键词： Static analysis

来源：评论

学校读者我要写书评

暂无评论

A parallel swarm library based on functional programming

Lecture Notes in Computer Science (including subseries Lectu...

引用

Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2017年 10305 LNCS卷 3-15页

作者： Rubio, Fernando De La Encina, Alberto Rabanal, Pablo Rodríguez, Ismael Facultad Informática Universidad Complutense de Madrid Madrid28040 Spain

ISBN: (纸本)9783319591520

In this paper we present a library of parallel skeletons to deal with swarm intelligence metaheuristics. the library is implemented using the parallel functional language Eden, an extension of the sequential functional language Haskell. Due to the higher-order nature of functional languages, we simplify the task of writing generic code, and also the task of comparing different strategies. the paper illustrates how to develop new skeletons and presents empirical results. © Springer international Publishing AG 2017.

关键词： functional programming

来源：评论

学校读者我要写书评

暂无评论

Improvement of high school students' programming skills? Case study using a computer contest? 7

Improvement of high school students' programming skills? Cas...

引用

7th international Multi-conference on Complexity, Informatics and Cybernetics, IMCIC 2016 and 7th international conference on Society and Information Technologies, ICSIT 2016

作者： Kofune, Yasuyo Koita, Takahiro Osaka Prefectural Yodogawa Technology High School Osaka Japan Doshisha University Kyoto Japan

ISBN: (纸本)9781941763384

this paper presents a case study of participation in a programming contest to stimulate student interest in learning programming. the hypothesis of this study is that students will be more willing to learn programming if the programming experience is fun. the students were asked to create Android applications (apps) based on their own ideas, experience the fun of programming, and thus gain confidence and a sense of accomplishment. the students who participated in the programming contest began to learn programming voluntarily. In addition, when the application that they created did not run well, they initiated a trial and error process on their own. the programming contest provided students with the goal of learning programming and a willingness to continue learning.

关键词： Students

来源：评论

学校读者我要写书评

暂无评论

ACM international conference Proceeding Series

ACM International Conference Proceeding Series

引用

7th Annual conference on Creativity and Making in Education, FabLearn 2017

ISBN: (纸本)9781450363495

the proceedings contain 20 papers. the topics discussed include: sustaining making in the era of accountability: STEM integration using e-textiles materials in a high school physics class;from classroom-making to functional-making: a study in the development of making literacy;equity-oriented STEM-rich making among youth from historically marginalized communities;how time gets used in afterschool maker programs;using assessment tools at an after school youth maker program;fidgeting with fabrication: students with ADHD making tools to focus;physical making online: a study of children's maker websites;teaching practices for making e-textiles in high school computing classrooms;Roll It Wall: developing a framework for evaluating practices of learning;framing MakerSpace communities;learning by fixing and designing problems: developing a reconstruction kit for debugging e-textiles;towards fostering the maker mindset: a case study of Koby's engagement in making and tinkering program with squishy circuits;dancing robots: a collaboration between elementary school and university engineering students;app making for pro-social and environmental change at an equity-oriented Makeathon;designing for rightful presence in stem-rich making;connecting space and narrative in culturally responsive making in ARIS with indigenous youth;the role of computational thinking in making: how beginning youth makers encounter & appropriate ct practices in making;texture, buttons, sound and code: the role of modal preference in the formation of leadership identities;and MakerSpaces as figured worlds.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Automatic programming for Robotic Grinding Using Real Time 3D Measurement

Automatic Programming for Robotic Grinding Using Real Time 3...

引用

IEEE international conference on Cyber Technology in Automation, Control, and Intelligent Systems

作者： Yaonan Li Heping Chen Ning Xi Shenzhen Academy of Robotics Department of Industrial and Manufacturing Systems The University of Hong Kong

ISBN: (纸本)9781538604915

In order to apply an industrial manipulator to grind or polish an unknown work piece, many robot tool points must be taught manually. this programming procedure could be complex if the work piece has arbitrary surfaces meanwhile its digital 3D model is unknown. In this paper, an automatic path planning for unknown work piece grinding is proposed using the 3D point cloud of the work piece. the surface defects are firstly recognized, then the relevant 3D point clouds are reconstructed using a real-time structure light based 3D scanner. the grinding path can be generated after the surface fitting using the point cloud. the manipulator force control is applied to keep a uniform grinding force and remedy the error of the surface fitting. We set up a test platform of the automatic grinding system, including a 3D scanner and an industrial manipulator. the experimental result proves that the proposed technique can realize automatic robotic programming of unknown work piece and has the potential for practical applications.

关键词： three-dimensional displays Tools Path planning Robot kinematics Surface fitting Service robots

来源：评论

学校读者我要写书评

暂无评论

programming Everyday Task by Demonstration using Primitive Skills for a Manipulator

Programming Everyday Task by Demonstration using Primitive S...

引用

IEEE international conference on Cyber Technology in Automation, Control, and Intelligent Systems

作者： Pham Ngoc Hung Takashi Yoshimi Graduate School of Engineering and Science Shibaura Institute of Technology Tokyo Japan Department of Electrical Engineering Shibaura Institute of Technology Tokyo Japan

ISBN: (纸本)9781538604915

this manuscript presents a method to program everyday manipulation tasks for a robot by human demonstration using primitive skills. the hand movement in the demonstrated task is recorded then segmented into sub-actions. Each sub-action is mapped to primitives skills of the robot. We proposed a list of necessary skills for a manipulator which are common to use in many everyday tasks. In order to adapt with the change of object's location, we applied Dynamic Movement Primitives model for regenerating movement which follows the demonstrated trajectory. In experiment, we considered the task “dispensing water” from a water thermos pot performed by a robot arm to verify the proposed method.

关键词： Task analysis Trajectory Robot kinematics Adaptation models thumb Tracking

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：