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作者： Mikeska, Jaroslav Brno University of Technology

Tato bakalářská práce je věnována laboratorním úlohám pro mikrokontroléry Mc9S08LH firmy Freescale. V úvodní části pojednává o periferiích mikroko... 详细信息

Tato bakalářská práce je věnována laboratorním úlohám pro mikrokontroléry Mc9S08LH firmy Freescale. V úvodní části pojednává o periferiích mikrokontroléru a vývojové desce TWR-S08LH, která je osazena tímto mikrokontrolérem. Druhá část je věnována vytvoření sady laboratorních úloh, demonstrujících využití periferií mikrokontroléru a vytvoření vzorových programů v jazyce c pro tyto úlohy.

关键词： Freescale mikrokontrolér Mc9S08LH TWR-S08LH laboratorní úlohy jazyk c Freescale microcontroller Mc9S08LH TWR-S08LH laboratory tutorials c programming language Text

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Block-c: A block-based programming teaching tool to facilitate introductory c programming courses 8

Block-C: A block-based programming teaching tool to facilita...

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8th IEEE Global Engineering Education conference (EDUcON)

作者： Kyfonidis, charalampos Moumoutzis, Nektarios christodoulakis, Stavros Univ Strathclyde Comp & Informat Sci Glasgow Lanark Scotland Tech Univ Crete Sch Elect & Comp Engn Lab Distributed Multimedia Inf Syst & Applicat Khania Greece

ISBN: (纸本)9781509054671

Block-c is a block-based programming learning tool for c programming language that uses the recognition over recall approach on top of the rigid and complex constructs of c language. It empowers students to learn programming by guiding them to focus on the programming logic rather than the syntax of c language. Novice programmers in introductory programming courses are more productive with the use of Block-c than with regular textual c programming. They can internalize the programming concepts more easily by gradually assigning meaning to the visual models (pertaining to the programming logic) created using the tool. In lab or tutorial sessions, where the presence of facilitators is limited, Block-c can guide the students to complete their assignments easily and effectively. Finally, Block-c promotes the transition to the regular textual c programming by allowing the students to export their code and see how their block-based programs are translated to textual c, but also how textual c is translated to block-based c.

关键词： c programming language teaching programming block-based programming visual programming syntactic error prevention in novice c programming language learning

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Vzdálený sběr dat s pomocí GSM modemů na bázi platformy Open AT

Vzdálený sběr dat s pomocí GSM modemů na bázi platform...

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作者： Otoupalík, Pavel Brno University of Technology

Tato bakalářská práce se zabývá vzdáleným sběrem dat pomocí GSM modemů s podporou platformy Open AT. Výsledkem práce je realizovaný modul, který slouží... 详细信息

Tato bakalářská práce se zabývá vzdáleným sběrem dat pomocí GSM modemů s podporou platformy Open AT. Výsledkem práce je realizovaný modul, který slouží jako převodník teploty na kmitočet. Tento modul je propojen s programovatelným GSM/GPRS modemem Wavecom Fastrack M1306B a společně jsou určeny k měření teploty od 0 do 40 °c. S podporou platformy Open AT a programovacího jazyka c byly vytvořeny dvě aplikace. První aplikace naměřenou teplotu společně s datem a časem měření posílá na vzdálený FTP server přes GPRS prostřednictvím GSM sítě. Výsledky měření jsou zobrazovány na webové stránce ve formě tabulky a grafu. Druhá aplikace slouží k posílání naměřené teploty ve formě SMS zprávy jako odpověď na zprávu příchozí.

关键词： Open AT měření teploty GSM GPRS vzdálený sběr dat programovací jazyk c AT příkaz časovač 555 modem Fastrack M1306B Open AT temperature measurement GSM GPRS remote data acquisition c programming language AT command 555 timer Fastrack M1306

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From Android games to coding in c-An approach to motivate novice engineering students to learn programming: A case study

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cOMPUTER APPLIcATIONS IN ENGINEERING EDUcATION 2018年第1期26卷 75-90页

作者： Dolgopolovas, Vladimiras Jevsikova, Tatjana Dagiene, Valentina Vilniaus Univ Matemat & Informat Inst Akad Str 4 LT-08663 Vilnius Lithuania Vilniaus Kolegija Fac Elect & Informat Vilnius Lithuania

This paper deals with the problem of overcoming difficulties and raising the motivation of novice engineering students studying programming. We consider this an important factor for engineering education in general and for programming of embedded devices, as well as for calculations and modeling in the field of scientific computing in particular. We present a case study on how novice engineering students can be motivated to study structured programming and coding in c using game programming in the App Inventor environment. The study is based on the authors' practical teaching experience in the Applied Sciences University for novice programmers, with students of the Technology of Smart Devices specialty, as well as the authors' long-time research activities in teaching computer Science.

关键词： c programming language engineering education MIT App Inventor mobile computing programming profession

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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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Satellite constellation design tradeoffs using multiple-objective evolutionary computation

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JOURNAL OF SPAcEcRAFT AND ROcKETS 2006年第6期43卷 1404-1411页

作者： Ferringer, Matthew P. Spencer, David B. Aerosp Corp Performance Modeling & Anal Dept Tech Staff Chantilly VA 20151 USA Penn State Univ Dept Aerosp Engn University Pk PA 16802 USA

Multiple-objective evolutionary computation provides the satellite constellation designer with an essential optimization tool due to the discontinuous, temporal, and/or nonlinear characteristics of the metrics that architectures are evaluated against. In this work, the nondominated sorting genetic algorithm 2 (NSGA-2) is used to generate sets of constellation designs (Pareto fronts) that show the tradeoff for two pairs of conflicting metrics. The first pair replicates a previously published sparse-coverage tradeoff to-establish a baseline for tool development, whereas the second characterizes the conflict between temporal (revisit time) and spatial (image quality) resolution. A thorough parameter analysis is performed on the NSGA-2 for the constellation design problem so that the utility of the approach may be assessed and general guidelines for use established. The approximated Pareto fronts generated for each tradeoff are discussed, and the trends exhibited by the nondominated designs are revealed.

关键词： Satellite constellations constellations Right Ascension Telescopes Earth Genetic Algorithm commercial off the Shelf Orbital Period Evolutionary Algorithm c programming language

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Acceleration of 2-D compressible Flow Solvers with Graphics Processing Unit clusters

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JOURNAL OF AEROSPAcE cOMPUTING INFORMATION AND cOMMUNIcATION 2011年第8期8卷 237-249页

作者： Phillips, Everett H. Zhang, Yao Davis, Roger L. Owens, John D. Univ Calif Davis Davis CA 95616 USA

We demonstrate the first use of graphics processing unit clusters for engineering-level compressible flow computations with two separately developed solvers. Each solver adopts the finite-volume approach on multiblock, structured, nonuniform, quadrilateral meshes. We use a second-order accurate integration scheme, with a second-order accurate dual-time integration, using steady-flow acceleration techniques such as local time-stepping and non-linear multigrid. The first solver is based on an existing multiblock Fortran code, MBFLO, which is augmented with graphics processing unit acceleration for the laminar and unsteady flow subroutines. The second solver is built from scratch for graphics processing unit acceleration, but is limited to the steady Euler solutions over simple geometries. The Euler solver is optimized by reducing the memory bandwidth, recomputing intermediate values, and combining functions to increase producer-consumer locality. These two approaches are used to highlight trade-offs between development effort and performance when accelerating an application with graphics processing units. On test cases with up to 6.4 million grid points, our graphics processing unit solvers outperform their central processing unit counterparts by up to 20x. In our graphics processing unit strong scalability test, 32 graphics processing units scale up to 22x over a single graphics processing unit, which is 16x faster than 32 central processing unit cores, or 500x faster than a single central Processing Unit core. It is confirmed that graphics processing unit clusters are effective for engineering computational fluid dynamics applications if their order-of-magnitude increase in performance is paired with large problem sizes to amortize the cost of communication.

关键词： compressible Flow Graphics Processing Unit central Processing Unit cFD c programming language Message Passing Interface Reynolds Averaged Navier Stokes Turbulence Models Mach Number Aerodynamic Performance

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cnerator: A Python application for the controlled stochastic generation of standard c source code

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SOFTWAREX 2021年 15卷

作者： Ortin, Francisco Escalada, Javier Univ Oviedo Comp Sci Dept Federico Garcia Lorca 18 Oviedo 33007 Spain Munster Technol Univ Dept Comp Sci Rossa Ave Cork Ireland

The Big code and Mining Software Repositories research lines analyze large amounts of source code to improve software engineering practices. Massive codebases are used to train machine learning models aimed at improving the software development process. One example is decompilation, where c code and its compiled binaries can be used to train machine learning models to improve decompilation. However, obtaining massive codebases of portable c code is not an easy task, since most applications use particular libraries, operating systems, or language extensions. In this paper, we present cnerator, a Python application that provides the stochastic generation of large amounts of standard c code. It is highly configurable, allowing the user to specify the probability distributions of each language construct, properties of the generated code, and post-processing modifications of the output programs. cnerator has been successfully used to generate code that, utilized to train machine learning models, has improved the performance of existing decompilers. It has also been used in the implementation of an infrastructure for the automatic extraction of code patterns. (c) 2021 The Author(s). Published by Elsevier B.V.

关键词： Big code Mining software repositories Machine learning c programming language Stochastic program generation Python

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MONTE-cARLO SIMULATION FOR BAcKScATTER OF OUTGASSING MOLEcULES FROM SIMPLE SPAcEcRAFT SURFAcES

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JOURNAL OF SPAcEcRAFT AND ROcKETS 1994年第4期31卷 649-654页

作者： FAN, c GEE, c FONG, Mc Lockheed Missile & Space Company Sunnyvale California 94086

A computer program has been developed for the Monte carlo simulation of molecular flux impingement on simple spacecraft surfaces due to self- and ambient scattering of outgassing molecules. The outgassing and ambient molecules are assumed to be elastic spheres with a Maxwellian velocity distribution. Binary elastic collision processes have been adopted in a hard-sphere collision model. A test-particle Monte carlo methodology is used to simulate sequentially the motions, collisions, and trajectories of the outgassing molecules inside a control volume by means of uniformly distributed random numbers. A unique Monte carlo computational scheme has been developed that reduces the computer processing time by three to four orders of magnitude for a typical outgassing problem without introducing additional assumptions or compromising the solution accuracy. Monte carlo results are obtained in the form of backscatter flux distribution and return flux ratios, for various sample sizes, control-volume sizes, and outgassing and ambient flow conditions. The cPU time for a typical run is about 2 to 4 min on a VAX-8700 computer, and less than about 2 to 4 s on a cray X-MP system.

关键词： Spacecrafts Direct Simulation Monte carlo Flow conditions c programming language Space Systems Division computing Speed Bhatnagar Gross Krook Algorithms and Data Structures cartesian coordinate System Statistical Analysis

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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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