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A library for developing real-time and embedded applications in c

JOURNAL OF SYSTEMS ARcHITEcTURE 2015年第5-6期61卷 239-255页

作者： Basanta-Val, Pablo Garcia-Valls, Marisol Univ Carlos III Madrid Madrid 28911 Spain

Next generation applications will demand more cost-effective programming abstractions to reduce increasing maintenance and development costs. In this context, the article explores the integration of an efficient programming language and high-level real-time programming abstractions. The resulting abstraction is called Embedded cyber Physical c (EcP-c) and it is useful for designing real-time applications directly on c. The abstraction has its roots on the real-time Java: one of the most modern programming languages, which benefited from mature programming patterns previously developed for other languages. It also targets embedded processors running on limited hardware. EcP-c takes the programming abstractions described in real-time Java and reflects them into a c application system, providing extensions for multi-threading, resource sharing, memory management, external event, signaling, and memory access. It also reports on the performance results obtained in a set of infrastructures used to check EcP-c, providing clues on the overhead introduced by these mechanisms on limited infrastructures. (c) 2015 Elsevier B.V. All rights reserved.

关键词： Real-time c programming language Real-time systems Real-time programming languages Arduino

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An empirical time analysis of evolutionary algorithms as c programs

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SOFTWARE-PRAcTIcE & EXPERIENcE 2015年第1期45卷 111-142页

作者： Nesmachnow, Sergio Luna, Francisco Alba, Enrique Univ Republica Fac Ingn Montevideo Uruguay Univ Carlos III Madrid Dept Informat Madrid Spain Univ Malaga Dept Lenguajes & Ciencias Computac E-29071 Malaga Spain

This article presents an empirical study devoted to characterize the computational efficiency behavior of an evolutionary algorithm (usually called canonical) as a c program. The study analyzes the effects of several implementation decisions on the execution time of the resulting evolutionary algorithm. The implementation decisions studied include: memory utilization (using dynamic vs. static variables and local vs. global variables), methods for ordering the population, code substitution mechanisms, and the routines for generating pseudorandom numbers within the evolutionary algorithm. The results obtained in the experimental analysis allow us to conclude that significant improvements in efficiency can be gained by applying simple guidelines to best program an evolutionary algorithm in c. copyright (c) 2013 John Wiley & Sons, Ltd.

关键词： empirical execution time analysis evolutionary algorithms c programming language software

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creating Detectors clothes' colors and Presentations for the Visually Impaired

Creating Detectors Clothes' Colors and Presentations for the...

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International conference on Science and Technology (TIcST)

作者： Pattanavichai, Santi Pattamavorakun, Suwarin Rajamangala Univ Technol Thanyaburi Fac Sci & Technol Pathum Thani Thailand

ISBN: (纸本)9781467376709

Matching the color of clothing is a challenging task for the visually impaired persons. In this paper, we propose and create the detector which matches color shirt and presentations for impaired vision. The detector is easy to use by using just one button press to manage the operation of the device for display speech output through speaker for the visually impaired persons. The speech output is Thai language only in this detector. The goal of creating a more personal control the color of the image file can be any shade of color on the RGB color with Micro Processor and Micro controller. The image file come from recording by the compact camera and detect by the source code creating by c programming language to filter color and display speech output through speaker from the database on the microprocessor. Finally, the detector for the visually impaired, who can choose the color of clothing that want to put it to work. The prototype is further tested by 20 visually impaired participants in Thomamix Witthaya School for the visually impaired at Phetchaburi Province.

关键词： The Visually Impaired A compact camera RGB color Micro controller Microprocessor c programming language Speaker Detectors clothes' colors

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Astronomy algorithm simulation for two degrees of freedom of solar tracking mechanism using clanguage 2

Astronomy algorithm simulation for two degrees of freedom of...

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2nd International conference on Sustainable Energy Engineering and Application (IcSEEA)

作者： Mirdanies, Midriem Komp LIPI Indonesian Inst Sci Res Ctr Elect Power & Mechatron Bandung 40135 Indonesia

ISBN: (纸本)9781510804616

This paper describes the use of an astronomical algorithm for two degrees of freedom of solar tracking mechanism with the result that the expected solar thermal collector panels always leads to the sun and solar energy is absorbed optimally. The movement triggers of the sun tracking mechanism is an astronomical algorithm that generates the azimuth and altitude values based on latitude, longitude, and time. This system does not use any sensor so that is more economical and can be applied anywhere. Simulations have been made using the c programming language with Dev-c++ IDE to test the accuracy of the azimuth and elevation values generated by astronomical algorithm used, and compared with the value produced by the U.S. Naval Observatory and Geoscience Australia. The location used is LIPI Bandung with latitude 107 degrees 36'E and longitude 6 degrees 52'S at every hour from 06: 00 to 18: 00 on the first date of each month of 2013. Simulation results show that the value of the azimuth and elevation resulting approached two other reference values with maximum azimuth difference 0.51 degrees and the maximum altitude difference 0.49 degrees to data the U.S. Naval Observatory, and the maximum azimuth difference 0.52 degrees and the maximum altitude difference 0.50 degrees to the data Australia Geoscience. Based on this research, it is known that the azimuth and elevation values was generated by these algorithms can be applied to two degrees of freedom of solar tracking mechanism because its accuracy is close to two other reference values. (c) 2015 The Authors. Published by Elsevier Ltd.

关键词： two degrees of freedom of solar tracking mechanism astronomy algorithm azimuth altitude c programming language

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c and OpencL Generation from MATLAB 15

C and OpenCL Generation from MATLAB

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30th AcM Symposium on Applied computing (SAc)

作者： Bispo, Joao Reis, Luis cardoso, Joao M. P. Univ Porto Fac Engn FEUP Oporto Portugal Univ Porto INESC TEC FEUP Oporto Portugal

ISBN: (纸本)9781450331968

In many engineering and science areas, models are developed and validated using high-level programing languages and environments as is the case with MATLAB. In order to target the multicore heterogeneous architectures being used on embedded systems to provide high performance computing with acceptable energy/power envelops, developers manually migrate critical code sections to lower-level languages such as c and OpencL, a time consuming and error prone process. Thus, automatic source-to-source approaches are highly desirable. We present an approach to compile MATLAB and output equivalent c/OpencL code to target architectures, such as GPU based hardware accelerators. We evaluate our approach on an existing MATLAB compiler framework named MATISSE. The OpencL generation relies on the manual insertion of directives to guide the compilation and is also capable of generating c wrapper code to interface and synchronize with the OpencL code. We evaluated the compiler with a number of benchmarks from different domains and the results are very encouraging.

关键词： MATLAB source-to-source compiler c programming language embedded systems GPUs OpencL

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Using graph theory for automated electric circuit solving

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EUROPEAN JOURNAL OF PHYSIcS 2015年第3期36卷 1-1页

作者： Toscano, L. Stella, S. Milotti, E. Univ Trieste Dipartimento Fis I-34127 Trieste Italy

Graph theory plays many important roles in modern physics and in many different contexts, spanning diverse topics such as the description of scale-free networks and the structure of the universe as a complex directed graph in causal set theory. Graph theory is also ideally suited to describe many concepts in computer science. Therefore it is increasingly important for physics students to master the basic concepts of graph theory. Here we describe a student project where we develop a computational approach to electric circuit solving which is based on graph theoretic concepts. This highly multidisciplinary approach combines abstract mathematics, linear algebra, the physics of circuits, and computer programming to reach the ambitious goal of implementing automated circuit solving.

关键词： computational physics electric circuits c programming language networks

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Astronomy Algorithm Simulation for Two Degrees of Freedom of Solar Tracking Mechanism Using clanguage

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Energy Procedia 2015年 68卷 60-67页

作者： Midriem Mirdanies Research Center for Electrical Power and Mechatronics Indonesian Institute of Sciences Komp LIPI Gd. 20. Lt. 2 Bandung 40135 Indonesia

This paper describes the use of an astronomical algorithm for two degrees of freedom of solar tracking mechanism with the result that the expected solar thermal collector panels always leads to the sun and solar energy is absorbed optimally. The movement triggers of the sun tracking mechanism is an astronomical algorithm that generates the azimuth and altitude values based on latitude, longitude, and time. This system does not use any sensor so that is more economical and can be applied anywhere. Simulations have been made using the c programming language with Dev-c + + IDE to test the accuracy of the azimuth and elevation values generated by astronomical algorithm used, and compared with the value produced by the U.S. Naval Observatory and Geoscience Australia. The location used is LIPI Bandung with latitude 107̊36′E and longitude 6̊52′S at every hour from 06:00 to 18:00 on the first date of each month of 2013. Simulation results show that the value of the azimuth and elevation resulting approached two other reference values with maximum azimuth difference 0.51 degrees and the maximum altitude difference 0.49 degrees to data the U.S. Naval Observatory, and the maximum azimuth difference 0.52 degrees and the maximum altitude difference 0.50 degrees to the data Australia Geoscience. Based on this research, it is known that the azimuth and elevation values was generated by these algorithms can be applied to two degrees of freedom of solar tracking mechanism because its accuracy is close to two other reference values.

关键词： two degrees of freedom of solar tracking mechanism astronomy algorithm azimuth altitude c programming language

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Practice in the construction of Elaborate course for: "The c programming language"

Practice in the Construction of Elaborate Course for: "The C...

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2010 2nd International conference on Education Technology and computer(第二届IEEE教育技术与计算机国际会议 IcETc 2010)

作者： Guoquan Jiang cuijun Zhao School of Computer Science and Technology Henan Polytechnic UniversityJiaozuo 454000 China School of Resources and Environment Engineering Henan Polytechnic UniversityJiaozuo 454000 China

ISBN: (纸本)9781424463671;9781424463688;9781424463701

construction of elaborate course is an important measure to improve reform of higher education and realize great-leap-forward development of higher education but how to effetely construct the elaborate course system? Besides building first-class teaching team, creating first-class management, it is also crucial to construct an elaborate course website with friendly interface, rich recourse and strong interactivity. This paper takes the c programming language course as an example;a web-based computer Aided Instruction (cAI) courseware is constructed. Some novel design ideas and key technologies in the developing process of the platform are described. Presently, the course of "The c programming language" is evaluated as a provincial-level elaborate course in Henan province. The strategies and schemes proposed here can be easily referenced and applied to other similar situations, especially in polytechnic universities in china.

关键词： elaborate course c programming language cAI courseware

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creating Detectors clothes' colors and Presentations for the Visually Impaired

Creating Detectors Clothes' Colors and Presentations for the...

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International conference on Science and Technology

作者： Santi Pattanavichai Suwarin Pattamavorakun Faculty of Science and Technology Rajamangala University of Technology Thanyaburi

ISBN: (纸本)9781467376716

关键词： The Visually Impaired A compact camera RGB color Micro controller Microprocessor c programming language Speaker Detectors clothes' colors Loudspeakers Visually Impaired Persons color macroprocessor conference documents clothing Speech output computer programming languages detector

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A SAT2IP cLIENT SOFTWARE THAT IS BASED ON RTSP PROTOcOL 22

A SAT2IP CLIENT SOFTWARE THAT IS BASED ON RTSP PROTOCOL

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22nd Telecommunications Forum Telfor (TELFOR)

作者： Markovic, Stanislav Acanski, Milan Bako, Miroslav Mudri, Sasa Univ Novom Sadu Fak Tehn Nauka Trg Dositeja Obradov 6 Novi Sad 21000 Serbia Istrazivacki Inst RT RK Novi Sad 21000 Serbia

ISBN: (纸本)9781479961917

The paper presents an implementation of client software for reception of television program from a SAT2IP server. The client software is written in c programming language, for Linux operating system. RTSP protocol is used for command connection, and RTP-RTcP for transmission of media stream. Both unicast and multicast operation are supported. The client can be integrated in Set Top Box software stack, in order to support IP television.

关键词： c language IPTV Linux media streaming transport protocols c programming language IP television Linux operating system RTP-RTcP RTSP protocol SAT2IP client software SAT2IP server multicast operation television program unicast operation Digital video broadcasting IP networks Servers Software TV Unicast

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