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1
da Silva, Antonio, Pablo Parra, Óscar R. Polo, and Sebastián Sánchez. "Runtime Instrumentation of SystemC/TLM2 Interfaces for Fault Tolerance Requirements Verification in Software Cosimulation." Modelling and Simulation in Engineering 2014 (2014): 1–15. http://dx.doi.org/10.1155/2014/105051.
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This paper presents the design of a SystemC transaction level modelling wrapping library that can be used for the assertion of system properties, protocol compliance, or fault injection. The library uses C++ virtual table hooks as a dynamic binary instrumentation technique to inline wrappers in the TLM2 transaction path. This technique can be applied after the elaboration phase and needs neither source code modifications nor recompilation of the top level SystemC modules. The proposed technique has been successfully applied to the robustness verification of the on-board boot software of the Instrument Control Unit of the Solar Orbiter’s Energetic Particle Detector.
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Voigt Nesbo, Simon, Johan Alme, Matthias Bonora, Piero Giubilato, Håvard Helstrup, Matteo Lupi, Gianluca Aglieri Rinella, et al. "System simulations for the ALICE ITS detector upgrade." EPJ Web of Conferences 245 (2020): 02011. http://dx.doi.org/10.1051/epjconf/202024502011.
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The ALICE experiment at the CERN LHC will feature several upgrades for Run 3, one of which is a new Inner Tracking System (ITS). The ITS upgrade is currently under development and commissioning, and will be installed during the ongoing long shutdown 2. A number of factors will have an impact on the performance and readout efficiency of the ITS in run 3, and to that end, a simulation model of the readout logic in the ALPIDE pixel sensor chips for the ITS was developed, using the SystemC library for system level modeling in C++. This simulation model is three orders of magnitude faster than a normal HDL simulation of the chip and facilitates simulations of an increased number of events for a large portion of the detector. In this paper, we present simulation results, where we have been able to quantify detector performance under different running conditions. The results are used for system configuration as well as for the ongoing development of the readout electronics.
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Qu, Bo, and Zhao Zhi Wu. "Design of Embedded System-Based CAPTCHA in C." Applied Mechanics and Materials 347-350 (August 2013): 1658–62. http://dx.doi.org/10.4028/www.scientific.net/amm.347-350.1658.
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This paper describes the technical details of design and implementation of embedded system-based CAPTCHA (verification code) in C, including a brief analysis of techniques for implementing CAPTCHA, and a simple and practical CAPTCHA system designed by the author of this paper, which can be used not only in embedded systems but also ordinary Web based MIS or control systems, without the support of any dedicated graphics library. An example is provided to show the practical usage and effect of this CAPTCHA system on an embedded application demo system.
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Wen, Xiu Lan, and Xue Long Liu. "Resistance Spot Welding Gun System Development Based on C# and Solidworks." Applied Mechanics and Materials 423-426 (September 2013): 1862–65. http://dx.doi.org/10.4028/www.scientific.net/amm.423-426.1862.
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In this paper, the type selection of resistance spot welding guns and 3D part drawings library are developed based on the C# programming software and Solidworks environment. It is called rswg-swc software system. The selection method of resistance spot welding guns is analyzed, 3D graphic library about the general parts and series parts of welding gun is established .Utilizing the user interface, input the necessary parameters to choose corresponding product model, product assembly drawings and part drawing are created in Solidworks.
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Carnevali, Laura, Lorenzo Ciani, Alessandro Fantechi, Gloria Gori, and Marco Papini. "An Efficient Library for Reliability Block Diagram Evaluation." Applied Sciences 11, no. 9 (April 28, 2021): 4026. http://dx.doi.org/10.3390/app11094026.
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Reliability Block Diagrams (RBDs) are widely used in reliability engineering to model how the system reliability depends on the reliability of components or subsystems. In this paper, we present librbd, a C library providing a generic, efficient and open-source solution for time-dependent reliability evaluation of RBDs. The library has been developed as a part of a project for reliability evaluation of complex systems through a layered approach, combining different modeling formalisms and solution techniques at different system levels. The library achieves accuracy and efficiency comparable to, and mostly better than, those of other well-established tools, and it is well designed so that it can be easily used by other libraries and tools.
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Betancourt, Virginia. "The National Library of Venezuela." Alexandria: The Journal of National and International Library and Information Issues 1, no. 1 (May 1989): 35–42. http://dx.doi.org/10.1177/095574908900100103.
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The National Library of Venezuela, now 141 years old, has 900 staff and a 1988 budget of $14.5 million. Its stock of c.2 million items includes over 1 million books and manuscripts, 15,000 periodicals, and audiovisual materials. Many changes have taken place since 1974 during a process of modernization, as part of a project to create a national information system, including the development of a National Audiovisual Archive (the first in Latin America) and the creation of a conservation service. During this time the National Library has also carried out a series of actions to support and promote the national book industry. As a result of the experience accumulated, the National Library is able to serve as a reference point for other countries in Latin America and the Caribbean in planning and developing their own services and national systems.
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Qu, Bo, and Zhong Xue Yang. "Design of Web Based Secure Embedded System in C." Applied Mechanics and Materials 347-350 (August 2013): 1635–40. http://dx.doi.org/10.4028/www.scientific.net/amm.347-350.1635.
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This paper describes the design and implementation of Web based secure embedded system, including tiny secure Web server, embedded system-based CGI library, and utilities for security, such as CAPTCHA program and mail sending program. The entire system is designed in C by the author of this paper on Linux platform with GNU tool chain. A Web based secure embedded application demo system is also designed to show the architecture and running effect. On the premise of implementing essential functions, the scale of the system is designed as small as possible therefore it is suitable not only for embedded Linux development on Web based applications but also for embedded system course teaching in colleges and universities. By some further extensions, it can also be used on development of general Web based MIS.
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LAZZARINI, VICTOR E. P. "The SndObj Sound Object Library." Organised Sound 5, no. 1 (April 2000): 35–49. http://dx.doi.org/10.1017/s1355771800001060.
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The SndObj Sound Object Library is a C++ object-oriented audio processing framework and toolkit. This article initially examines some of the currently available sound processing packages, including sound compilers, programming libraries and toolkits. It reviews the processes involved in the use of these systems and their strengths and weaknesses. Some application examples are also provided. In this context, the SndObj library is presented and its components are discussed in detail. The article shows the library as composed of a set of classes that encapsulate all processes involved in synthesis, processing and IO operations. Programming examples are included to show some uses of the system. These, together with library binaries, source code and complete documentation, are included in the downloadable package, available on the Internet. Possible future developments and applications are considered. The library is demonstrated to provide a useful base for research and development of audio processing software.
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Ferques, Rafael Gil, C. E. C. Nogueira, A. M. Meneghetti, and D. M. Rocha. "Computational System for Sizing Wind Energy Generation Systems Using Artificial Neural Networks." Journal of Agricultural Science 10, no. 10 (September 15, 2018): 423. http://dx.doi.org/10.5539/jas.v10n10p423.
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The objective of this work was to develop a computational application for the design of wind power generation systems in small-scale On-Grid and Off-Grid installations, using a user friendly and interactive process. Using artificial intelligence concepts in conjunction with genetic algorithms, to verify the technical and economic viability of the implementation of the wind power generation system. The application coding was done using the languages Java, C, C++ and the database in MySQL language, containing technical specifications and costs of components of a wind system (of this type of system). For the development of neural networks and genetic algorithms, the Encog library was used. The application has proven effective in designing and economic analysis of small wind systems, allowing fast and simple simulation of On-Grid systems and Off-Grid systems. In addition, it proved effective in storing and accessing the information regarding the simulations performed and in the comparison between them, in order to perform a new simulation. Also, it was reliable in the accomplishment of the economic analysis, returning in a clear form the feasibility or not of the implantation of the project.
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Li, Peng Cheng, Wen Lei Sun, Li He, and Hong Wei Wang. "Study on Key Technologies of Web Parts Library System Development." Key Engineering Materials 522 (August 2012): 828–32. http://dx.doi.org/10.4028/www.scientific.net/kem.522.828.
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Through the development of the web parts library system, this paper intensively studies the secondary development technology of Pro/E in asynchronous mode on the .NET platform, using C # programming language, dynamically browsing three-dimensional parts technology on line and on-line parameterized driving technology, and with ADO.NET network programming technology, achieves on-line connecting database. With all the key technologies researched above, it demonstrates the feasibility of achieving each function and process of web parts library system.
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Reyneri, Leonardo Maria, Alejandro Serrano-Cases, Yolanda Morilla, Sergio Cuenca-Asensi, and Antonio Martínez-Álvarez. "A Compact Model to Evaluate the Effects of High Level C++ Code Hardening in Radiation Environments." Electronics 8, no. 6 (June 10, 2019): 653. http://dx.doi.org/10.3390/electronics8060653.
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A high-level C++ hardening library is designed for the protection of critical software against the harmful effects of radiation environments that can damage systems. A mathematical and empirical model to predict system behavior in the presence of radiation induced faults is also presented. This model generates a quick evaluation and adjustment of several reliability vs. performance trade-offs, to optimize radiation hardening based on the proposed C++ hardening library. Several simulations and irradiation campaigns with protons and neutrons are used to build the model and to tune it. Finally, the effects of our hardening approach are compared with other hardened and non-hardened approaches.
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MALLOY, BRIAN A., ERROL L. LLOYD, JASON O. HALLSTROM, and EDWARD B. DUFFY. "CAPTURING INTERFACE PROTOCOLS TO SUPPORT COMPREHENSION AND EVALUATION OF C++ LIBRARIES." International Journal of Software Engineering and Knowledge Engineering 21, no. 08 (December 2011): 1123–46. http://dx.doi.org/10.1142/s0218194011005645.
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Developing and maintaining reliable object-oriented software requires a precise understanding of how individual classes must be used. Unfortunately, for many systems, especially those that are large, the available documentation is inadequate. Developers are left with incomplete information concerning the allowable set of call sequences that each class can accommodate. Techniques for reverse engineering this information and presenting it to developers in an intellectually scalable manner are critical.In this paper, we present four contributions to address this challenge. First, we describe a runtime trace collection system for large C++ applications. Second, we present a methodology for reverse engineering interface protocols from collected trace data. Third, we present a scalable, tunable algorithm for generating compact specifications of these protocols. Finally, we present a detailed case study involving the Mozilla Necko library. We consider popular applications in common use constructed using this library. The results are promising both in terms of the performance of the approach and the utility of the identified protocols.
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Zhao, Yan Jiao, Yu Xin Wang, Guo He, and Hong Hua Zhao. "A New Image-Based Soil Deformation Measurement System." Advanced Materials Research 629 (December 2012): 488–92. http://dx.doi.org/10.4028/www.scientific.net/amr.629.488.
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A Soil Deformation Measurement System using OPENCV library and FFTW library in C++ was developed in this paper. The system applied camera calibration based on neural network and Fasst Fourier Transform (FFT) cross-correlation algorithm for Particle Image Velocimetry (PIV). It is used to obtain soil deformation data, such as displacements, velocity and strain, and visualize the deformation. Experiments show that this system could acquire deformation data from soil images accurately, efficiently and continuously, which provides a strong proof that image processing technology has practical significance and application value in the research field of geotechnical engineering.
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Zaslaver, Alon, Idan Liani, Oshrat Shtangel, Shira Ginzburg, Lisa Yee, and Paul W. Sternberg. "Hierarchical sparse coding in the sensory system of Caenorhabditis elegans." Proceedings of the National Academy of Sciences 112, no. 4 (January 12, 2015): 1185–89. http://dx.doi.org/10.1073/pnas.1423656112.
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Animals with compact sensory systems face an encoding problem where a small number of sensory neurons are required to encode information about its surrounding complex environment. Using Caenorhabditis elegans worms as a model, we ask how chemical stimuli are encoded by a small and highly connected sensory system. We first generated a comprehensive library of transgenic worms where each animal expresses a genetically encoded calcium indicator in individual sensory neurons. This library includes the vast majority of the sensory system in C. elegans. Imaging from individual sensory neurons while subjecting the worms to various stimuli allowed us to compile a comprehensive functional map of the sensory system at single neuron resolution. The functional map reveals that despite the dense wiring, chemosensory neurons represent the environment using sparse codes. Moreover, although anatomically closely connected, chemo- and mechano-sensory neurons are functionally segregated. In addition, the code is hierarchical, where few neurons participate in encoding multiple cues, whereas other sensory neurons are stimulus specific. This encoding strategy may have evolved to mitigate the constraints of a compact sensory system.
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Turgeon, B. G., R. C. Garber, and O. C. Yoder. "Development of a fungal transformation system based on selection of sequences with promoter activity." Molecular and Cellular Biology 7, no. 9 (September 1987): 3297–305. http://dx.doi.org/10.1128/mcb.7.9.3297.
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A novel strategy was used to develop a transformation system for the plant pathogenic fungus Cochliobolus heterostrophus. Sequences capable of driving the expression of a gene conferring resistance to the antibiotic hygromycin B in C. heterostrophus were selected from a library of genomic DNA fragments and used, with the selectable marker, as the basis for transformation. The library of random 0.5- to 2.0-kilobase-pair fragments of C. heterostrophus genomic DNA was inserted at the 5' end of a truncated, promoterless Escherichia coli hygromycin B phosphotransferase gene (hygB) whose product confers resistance to hygromycin B. C. heterostrophus protoplasts were transformed with the library and selected for resistance. Resistant colonies arose at low frequency. Each colony contained a transformation vector stably integrated into chromosomal DNA. When the transforming DNA was recovered from the genome and introduced into C. heterostrophus, resistant colonies appeared at higher frequency. We determined the sequences of two of the C. heterostrophus DNA fragments which had been inserted at the 5' end of hygB in the promoter library and found that both made translational fusions with hygB. One of the two fusions apparently adds 65 and the other at least 86 amino acids to the N-terminus of the hygB product. Plasmids containing hygB-C. heterostrophus promoter fusions can be used unaltered to drive hygB expression in several other filamentous ascomycetes. This approach to achieving transformation may have general utility, especially for organisms with relatively undeveloped genetics.
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Turgeon, B. G., R. C. Garber, and O. C. Yoder. "Development of a fungal transformation system based on selection of sequences with promoter activity." Molecular and Cellular Biology 7, no. 9 (September 1987): 3297–305. http://dx.doi.org/10.1128/mcb.7.9.3297-3305.1987.
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A novel strategy was used to develop a transformation system for the plant pathogenic fungus Cochliobolus heterostrophus. Sequences capable of driving the expression of a gene conferring resistance to the antibiotic hygromycin B in C. heterostrophus were selected from a library of genomic DNA fragments and used, with the selectable marker, as the basis for transformation. The library of random 0.5- to 2.0-kilobase-pair fragments of C. heterostrophus genomic DNA was inserted at the 5' end of a truncated, promoterless Escherichia coli hygromycin B phosphotransferase gene (hygB) whose product confers resistance to hygromycin B. C. heterostrophus protoplasts were transformed with the library and selected for resistance. Resistant colonies arose at low frequency. Each colony contained a transformation vector stably integrated into chromosomal DNA. When the transforming DNA was recovered from the genome and introduced into C. heterostrophus, resistant colonies appeared at higher frequency. We determined the sequences of two of the C. heterostrophus DNA fragments which had been inserted at the 5' end of hygB in the promoter library and found that both made translational fusions with hygB. One of the two fusions apparently adds 65 and the other at least 86 amino acids to the N-terminus of the hygB product. Plasmids containing hygB-C. heterostrophus promoter fusions can be used unaltered to drive hygB expression in several other filamentous ascomycetes. This approach to achieving transformation may have general utility, especially for organisms with relatively undeveloped genetics.
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Lang, Jun, and Liang Han. "Design of Library Smart Bookshelf Based on RFID." Applied Mechanics and Materials 519-520 (February 2014): 1368–74. http://dx.doi.org/10.4028/www.scientific.net/amm.519-520.1368.
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The misplacement problem in library has been for a long time, most of those present solutions are temporary. For thoroughly resolving this problem, we designed a smart bookshelf which based on RFID and used C# and SQL Sever2008. Hardware of system composed by UHF tags worked at frequency range of 920MHz, RFID readers, antennas. Software of system included two parts: inventory check, misplacement check. It can complete the statistical work of available and borrowed books, find those misplaced books and check their corresponding correct place. The test results suggest that the system is running stable, the accuracy of data read is relatively high, the find and compare results are according with expected results. This system can save labor and improve work efficiency.
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COUNSELL, STEVE, PETE NEWSON, and EMILIA MENDES. "DESIGN LEVEL HYPOTHESIS TESTING THROUGH REVERSE ENGINEERING OF OBJECT-ORIENTED SOFTWARE." International Journal of Software Engineering and Knowledge Engineering 14, no. 02 (April 2004): 207–20. http://dx.doi.org/10.1142/s0218194004001609.
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Comprehension of an object-oriented (OO) system, its design and use of OO features such as aggregation, generalisation and other forms of association is a difficult task to undertake without the original design documentation for reference. In this paper, we describe the collection of high-level class metrics from the UML design documentation of five industrial-sized C++ systems. Two of the systems studied were libraries of reusable classes. Three hypotheses were tested between these high-level features and the low-level class features of a number of class methods and attributes in each of the five systems. A further two conjectures were then investigated to determine features of key classes in a system and to investigate any differences between library-based systems and the other systems studied in terms of coupling. Results indicated that, for the three application-based systems, no clear patterns emerged for hypotheses relating to generalisation. There was, however, a clear (positive) statistical significance for all three systems studied between aggregation, other types of association and the number of methods and attributes in a class. Key classes in the three application-based systems tended to contain large numbers of methods, attributes, and associations, significant amounts of aggregation but little inheritance. No consistent, identifiable key features could be found in the two library-based systems; both showed a distinct lack of any form of coupling (including inheritance) other than through the C++ friend facility.
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Carpenter, Kenneth E. "The Harvard University Library: A National Resource." Alexandria: The Journal of National and International Library and Information Issues 9, no. 2 (August 1997): 127–41. http://dx.doi.org/10.1177/095574909700900204.
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Harvard University is a decentralized university, with each of its nine faculties basically responsible for its own financial well-being. The library operates within the framework of this decentralization. The term ‘Harvard University Library’ therefore has two different meanings. In one seise it refers to those who are responsible for carrying out certain functions where coordination is required. Specifically, the University Library provides a unified catalogue for the c.90 library units throughout the university. It also manages the Harvard Depository, which helps to ease the space problem, and provides certain preservation services to the decentralized libraries. The Harvard University Archives is a University Library institution, and there are also University Library functions in the areas of personnel and publications. The decentralized library system began to be developed in the 19th century. Not only do the libraries not share common funding or administration; they have varied purposes and types of reader. Short-term access for outsiders is possible in almost all of the libraries. A distinguishing feature of the library is its international collections, whose development began to be emphasized at the very aid of the 19th century. The library's digital initiatives are largely aimed at providing better service to the library's readers.
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Zhang, Chuan Qing, Jun Yi Shao, Ken Chen, and Chang Zhi Ren. "A Robotic Manipulator Control and Simulation System with Qt and VTK." Advanced Materials Research 462 (February 2012): 712–19. http://dx.doi.org/10.4028/www.scientific.net/amr.462.712.
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In this paper, we present an object-oriented C++ library for robotic manipulator control and simulation, THRControl, which is inherited from Qt and VTK. The library package has advantages include support cross-platform applications; high flexibility and high computational efficiency meet the need of computations required in robot control such as forward kinematics, inverse dynamics, and jacobian. The experimental results show that it is very easy is construct a user-friendly manipulator control and simulation system.
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Gaponov, Yu A., K. Ito, and Y. Amemiya. "Object library for a new generation of experiment-controlling applications under the UNIX operating system." Journal of Synchrotron Radiation 5, no. 3 (May 1, 1998): 593–95. http://dx.doi.org/10.1107/s0909049597018700.
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The Interface Object Library based on the Motif extension of the X Windows system and on the ESONE SVIC-VCC Library is presented. Some features of the applications for controlling a synchrotron radiation experiment are discussed. The Interface Object Library is written in the object-oriented C++ language. The library class-hierarchy structure is presented and discussed. Several interfaces were realized in the Interface Object Library: the Windows interface, the CAMAC interface and the interface for supporting the experiment. The behaviour of the objects describing the CAMAC crate and CAMAC block is discussed. The application of these protocols for controlling the fast one-coordinate position-sensitive X-ray detector OD3 is presented.
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Liu, Cheng, Lei Xiao, and Xi Long Qu. "The Research and Implementation of Particle Effects Algorithm in Virtual Environments." Applied Mechanics and Materials 34-35 (October 2010): 1568–72. http://dx.doi.org/10.4028/www.scientific.net/amm.34-35.1568.
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As we know, when using traditional particle system to initiate the natural phenomenon, we need to deal with a lot of computation and data issues, in order solve this problem, we discuses in this chapter to combine the way of particle system and visual particle system, using vertex buffer techniques and texture mapping techniques to design elementary particle systems, which base on Visual C++ as compiler platform. using the Direct3D graphics software library to complete particle system designing ,and it successfully simulated using a small amount of particles in the flame, smoke and other special effects which not only improved the Utilization of System resources ,but also Guaranteed the Verisimilitude and Real-time in the same time.
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Tie, Zhixin. "A Mobile Agent-Based System for Server Resource Monitoring." Cybernetics and Information Technologies 13, no. 4 (December 1, 2013): 104–17. http://dx.doi.org/10.2478/cait-2013-0057.
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Abstract Mobile agent technology has become an important approach for the design and development of distributed systems. Currently, there is little research regarding the efficiency of mobile agent-based monitoring of the server resource. Based on the Mobile-C library, a mobile agent-based system called Mobile Agent- Based Server Resource Monitoring System (MABSRMS) is presented. In MABSRMS mobile agents can call low level functions in binary dynamic or static libraries, and thus can monitor server resource conveniently and efficiently. The experiment was conducted in a university computer center with hundreds of computer workstations and 15 server machines. The experiment uses the MABSRMS to detect system resources, such as available hard disk space, CPU usage and main memory usage. The experiment shows that the mobile agent-based monitoring system is a practical way to monitor server resources in large scale distributed computer centers.
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AOKI, KIYOKO F., and D. T. LEE. "TOWARDS WEB-BASED COMPUTING." International Journal of Computational Geometry & Applications 11, no. 01 (February 2001): 71–104. http://dx.doi.org/10.1142/s0218195901000407.
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In a problem solving environment for geometric computing, a graphical user interface, or GUI, for visualization has become an essential component for geometric software development. In this paper we describe a visualization system, called GeoJAVA, which consists of a GUI and a geometric visualization library that enables the user or algorithm designer to (1) execute and visualize an existing algorithm in the library or (2) develop new code over the Internet. The library consists of geometric code written in C/C++. The GUI is written using the Java programming language. Taking advantage of the socket classes and system-independent application programming interfaces (API's) provided with the Java language, GeoJAVA offers a platform independent environment for distributed geometric computing that combines Java and C/C++. Users may remotely join a "channel" or discussion group in a location transparent manner to do collaborative research. The visualization of an algorithm, a C/C++ program located locally or remotely and controlled by a "floor manager", can be viewed by all the members in the channel through a visualization sheet called GeoJAVASheet. A chat box is also provided to enable dialogue among the members. Furthermore, this system not only allows visualization of pre-compiled geometric code, but also serves as a web-based programming environment where the user may submit a geometric code, compile it with the libraries provided by the system, and visualize it directly over the web sharing it with other users immediately.
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Abramov, Sergey, Vladimir Roganov, Valeriy Osipov, and German Matveev. "Implementation of the LAMMPS package using T-system with an Open Architecture." Informatics and Automation 20, no. 4 (August 11, 2021): 971–99. http://dx.doi.org/10.15622/ia.20.4.8.
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Supercomputer applications are usually implemented in the C, C++, and Fortran programming languages using different versions of the Message Passing Interface library. The "T-system" project (OpenTS) studies the issues of automatic dynamic parallelization of programs. In practical terms, the implementation of applications in a mixed (hybrid) style is relevant, when one part of the application is written in the paradigm of automatic dynamic parallelization of programs and does not use any primitives of the MPI library, and the other part of it is written using the Message Passing Interface library. In this case, the library is used, which is a part of the T-system and is called DMPI (Dynamic Message Passing Interface). In this way, it is necessary to evaluate the effectiveness of the MPI implementation available in the T-system. The purpose of this work is to examine the effectiveness of DMPI implementation in the T-system. In a classic MPI application, 0% of the code is implemented using automatic dynamic parallelization of programs and 100% of the code is implemented in the form of a regular Message Passing Interface program. For comparative analysis, at the beginning the code is executed on the standard Message Passing Interface, for which it was originally written, and then it is executed using the DMPI library taken from the developed T-system. Сomparing the effectiveness of the approaches, the performance losses and the prospects for using a hybrid programming style are evaluated. As a result of the conducted experimental studies for different types of computational problems, it was possible to make sure that the efficiency losses are negligible. This allowed to formulate the direction of further work on the T-system and the most promising options for building hybrid applications. Thus, this article presents the results of the comparative tests of LAMMPS application using OpenMPI and using OpenTS DMPI. The test results confirm the effectiveness of the DMPI implementation in the OpenTS parallel programming environment
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Kohavi, Ron, Dan Sommerfield, and James Dougherty. "Data Mining Using $\mathcal{MLC}++$ a Machine Learning Library in C++." International Journal on Artificial Intelligence Tools 06, no. 04 (December 1997): 537–66. http://dx.doi.org/10.1142/s021821309700027x.
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Data mining algorithms including maching learning, statistical analysis, and pattern recognition techniques can greatly improve our understanding of data warehouses that are now becoming more widespread. In this paper, we focus on classification algorithms and review the need for multiple classification algorithms. We describe a system called [Formula: see text], which was designed to help choose the appropriate classification algorithm for a given dataset by making it easy to compare the utility of different algorithms on a specific dataset of interest. [Formula: see text] not only provides a workbench for such comparisons, but also provides a library of C++ classes to aid in the development of new algorithms, especially hybrid algorithms and multi-strategy algorithms. Such algorithms are generally hard to code from scratch. We discuss design issues, interfaces to other programs, and visualization of the resulting classifiers.
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Essig, Michael, Andreas H. Glas, and Josef Gutsmiedl. "Procurement of a supply information system." Journal of Enterprise Information Management 28, no. 3 (April 13, 2015): 377–99. http://dx.doi.org/10.1108/jeim-01-2014-0008.
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Purpose – Given the high importance of information systems for procurement, surprisingly there have been little efforts to analyze the process and the relevant reasons for the procurement decision of such systems from a stakeholder perspective. The purpose of this paper is to explore these aspects in the context of low-value (C-)parts. Design/methodology/approach – Research is based on a case study in a pre-fabricator company in Germany and analyzes the process to procure a system for sourcing low-value parts. Findings – As a finding, the procurement process and decision attributes have been integrated into a framework which supports corporate decision-making considering the procurement reasons of all involved stakeholders (internal departments, external customers and suppliers). Research limitations/implications – Research is based on case study analysis. Findings are specific to case companies and the environment in which they operate. The framework should be tested further in different contexts. Practical implications – The developed decision frame supports the evaluation of different sourcing information systems, including clearly measurable criteria but also qualitative or company-strategic decision attributes. Originality/value – The combination of financial and other perspectives (operations, information technology (IT)-administration, system users, etc.), is used to evolve a robust ex-ante instrument for supporting buying decisions for procurement information systems. The case description also illustrates the findings and develops new insights about stakeholders and buying groups decision-making for information systems.
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Bastari, Avando, Didik Suparmanto, Sunarta Sunarta, and Edy Widodo. "DESIGN OF AUTOPILOT TANK PROTOTYPE MONITORING SYSTEM ON GROUND STATION USING GOOGLE MAPS." JOURNAL ASRO 11, no. 03 (August 31, 2020): 31. http://dx.doi.org/10.37875/asro.v11i03.305.
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Indonesia is one of the largest archipelago countries in the world. Therefore, it is necessary to safeguard the vital object especially within the border area of the (NKRI). The unmanned tank rides are one of the rides that can be used as combat rides on the battlefield in maintaining security and sovereignty (NKRI). Utilization of unmanned tank rides on the durability and defence functions of the nation can minimize casualties. In realizing the control system and monitoring of unmanned tank rides using the design build Monitoring system Autopilot Prototype Tank on the Ground Station using Google Maps. In this design defines the needs of the system on the ground station. The need for electronic maps to display the location of the prototype tanks on the system interface, using one of the Gmap.net program libraries or libraries that can be integrated with the C# programming language. The need for data transactions through UART, using the library or series of communication program libraries for this need. The need for prototype tank location indicator and waypoint location in the form of marker on map, using one of Gmap Marker function from library or program library Gmap.net. The need to describe a straight line between waypoint points, using the polyline function of the Gmap.net library or program library. The need to describe the area on the waypoint, using the circle function of the Gmap.net library or program library. Autopilot control of the prototype tanks that have been performed can be done well using Visual Studio 2012 programming. Monitoring system on the interface of the system that is made shows the system can run well, with the results of the system can display prototype travel to every waypoint made.
Keywords: Visual Studio 2012, Gmap.net, Prototype, Autopilot.
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Jaruga, A., S. Arabas, D. Jarecka, H. Pawlowska, P. K. Smolarkiewicz, and M. Waruszewski. "libmpdata++ 0.1: a library of parallel MPDATA solvers for systems of generalised transport equations." Geoscientific Model Development Discussions 7, no. 6 (November 26, 2014): 8179–273. http://dx.doi.org/10.5194/gmdd-7-8179-2014.
Full textAbstract:
Abstract. This paper accompanies first release of libmpdata++, a C++ library implementing the Multidimensional Positive-Definite Advection Transport Algorithm (MPDATA). The library offers basic numerical solvers for systems of generalised transport equations. The solvers are forward-in-time, conservative and non-linearly stable. The libmpdata++ library covers the basic second-order-accurate formulation of MPDATA, its third-order variant, the infinite-gauge option for variable-sign fields and a flux-corrected transport extension to guarantee non-oscillatory solutions. The library is equipped with a non-symmetric variational elliptic solver for implicit evaluation of pressure gradient terms. All solvers offer parallelisation through domain decomposition using shared-memory parallelisation. The paper describes the library programming interface, and serves as a user guide. Supported options are illustrated with benchmarks discussed in the MPDATA literature. Benchmark descriptions include code snippets as well as quantitative representations of simulation results. Examples of applications include: homogeneous transport in one, two and three dimensions in Cartesian and spherical domains; shallow-water system compared with analytical solution (originally derived for a 2-D case); and a buoyant convection problem in an incompressible Boussinesq fluid with interfacial instability. All the examples are implemented out of the library tree. Regardless of the differences in the problem dimensionality, right-hand-side terms, boundary conditions and parallelisation approach, all the examples use the same unmodified library, which is a key goal of libmpdata++ design. The design, based on the principle of separation of concerns, prioritises the user and developer productivity. The libmpdata++ library is implemented in C++, making use of the Blitz++ multi-dimensional array containers, and is released as free/libre and open-source software.
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MORALES, JOSE F., RÉMY HAEMMERLÉ, MANUEL CARRO, and MANUEL V. HERMENEGILDO. "Lightweight compilation of (C)LP to JavaScript." Theory and Practice of Logic Programming 12, no. 4-5 (July 2012): 755–73. http://dx.doi.org/10.1017/s1471068412000336.
Full textAbstract:
AbstractWe present and evaluate a compiler from Prolog (and extensions) to JavaScript which makes it possible to use (constraint) logic programming to develop the client side of web applications while being compliant with current industry standards. Targeting JavaScript makes (C)LP programs executable in virtually every modern computing device with no additional software requirements from the point of view of the user. In turn, the use of a very high-level language facilitates the development of high-quality, complex software. The compiler is a back end of the Ciao system and supports most of its features, including its module system and its rich language extension mechanism based onpackages. We present an overview of the compilation process and a detailed description of the run-time system, including the support for modular compilation into separate JavaScript code. We demonstrate the maturity of the compiler by testing it with complex code such as a CLP(FD) library written in Prolog with attributed variables. Finally, we validate our proposal by measuring the performance of some LP and CLP(FD) benchmarks running on top of major JavaScript engines.
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Xu, Pei Long, and Yi Min Su. "Design and Implementation of Landscape System for East and West Huashi Street in Beijing Based on Virtual Reality Technology." Applied Mechanics and Materials 263-266 (December 2012): 1849–52. http://dx.doi.org/10.4028/www.scientific.net/amm.263-266.1849.
Full textAbstract:
In this project, the utility of virtual environment modeling techniques based on geometric model on modeling street virtual reality systems was studied. The aim is to design a set of modeling streetscape system based on virtual reality systems. In designation phase, this system was based on computer graphics, and virtual environment entities were set up modeled by real entities in life. In the study, the East and West Huashi Street in Chongwen district was taken as a study area, the model of the scene was set up by virtual reality geo-information system, special virtual reality modeling software Multigen Creator was used to set up the 3D environment of the space, and the virtual reality scene was set up with advanced C language and called Vega function library, so that interactive manipulation of boosting, reducing, turning, searching and roaming of the virtual scene could be realized.
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Tovell, Joyce Pressey. "The Creswell Library of Islamic Art and Architecture at the American University in Cairo Part Two: The Evolution of a Teaching Library 1973-1992." Art Libraries Journal 18, no. 1 (1993): 39–48. http://dx.doi.org/10.1017/s030747220000821x.
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From 1973 until early 1992, the Creswell Library of Islamic Art and Architecture, first established at the American University in Cairo (AUC) in 1957, evolved from a restricted research library dominated by its original owner, K. A. C. Creswell, into a teaching and research branch library integrated within the university’s library system. International politics and university-wide library needs delayed improvements, but the Creswell collection was fully catalogued and interfiled when the new Main Library opened in 1982. As use of the Creswell Library accelerated, stacks nominally closed were opened to faculty and trusted students until standard procedures resumed after a 1989 budget and staff increase, anticipating the library’s 1992 incorporation in AUC’s new Rare Book and Special Collections Library.A marked increase in MA degrees awarded in the discipline and in use by visiting researchers during the library’s final years testifies to its effectiveness in supporting the study of Islamic art. Assessments of the library’s overall contribution, however, must balance the value of a core collection of beautiful books, little used, against an incalculable loss: the records of Cairo buildings no longer extant that would have resulted from the larger student group a more accessible library would have encouraged.
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Тютляева, Екатерина, and Ekaterina Tyutlyaeva. "Using parallel Batcher sort in Active Storage System." Program systems: theory and applications 4, no. 4 (November 15, 2013): 127–42. http://dx.doi.org/10.12737/2420.
Full textAbstract:
This paper describes a modified parallel Batcher sort algorithm for big data processing. The main novelty of implemented sort algorithm is to integrate effective parallel batcher sort and Active Storage concept. We use Active Storage based on Lustre File System and TSim C++ template library for parallelization. This paper presents experimental testing results for scientific processing real seismic data. Presented results indicate that described algorithm can reach linear acceleration on sorting big data sets (More then 100 Gb).
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Dinkla, Inez J. T., Mariekie Gericke, B. K. Geurkink, and Kevin B. Hallberg. "Acidianus Brierleyi is the Dominant Thermoacidophile in a Bioleaching Community Processing Chalcopyrite Containing Concentrates at 70°C." Advanced Materials Research 71-73 (May 2009): 67–70. http://dx.doi.org/10.4028/www.scientific.net/amr.71-73.67.
Full textAbstract:
Bioleaching test work was performed in continuously operated multi-stage reactor systems at 70°C using a thermophilic culture treating an Aguablanca Ni-Cu concentrate from Spain and a blend of Cu concentrates from Bor, Serbia. The copper in both these concentrates occurs as chalcopyrite and therefore the use of thermophiles was applied, which resulted in copper recoveries of over 95%. Qualitative assessment of the microbial community in the bioreactors was performed by terminal restriction enzyme fragment length polymorphism (T-RFLP) and clone library analysis of the 16S rRNA genes amplified by PCR. T-RFLP analysis revealed that only archaea were present, and that the communities in both the Aguablanca and Bor systems consisted of two different microorganisms. A 16S rRNA gene clone library using DNA from the Aguablanca system was constructed and screened. Again, two archaea were detected in similar relative abundance in the population as found by T-RFLP analyses. The sequences of these two cloned genes revealed that the dominant archaeon (up to 98% of the total archaea detected) was Acidianus brierleyi, and the other was Metallosphaera sedula. Quantitative assessment of the microbial community was performed by Q-PCR and confirmed the dominance of archaea in the system with Acidianus being the dominant strain (98-99% of the total population) and a minor part of the population (1-2%) consisted of Metallosphaera. Additionally, very small amounts of Sulfolobus spp. were detected. This study, along with other recent studies on the diversity of thermoacidophiles involved in the solubilization of copper from chalcopyrite concentrates, revealed that a wider variety of thermoacidophiles are involved in bioprocessing of metal sulfides, and showed that A. brierleyi should be considered an important biomining acidophile.
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Giannakis, Mihalis, Konstantina Spanaki, and Rameshwar Dubey. "A cloud-based supply chain management system: effects on supply chain responsiveness." Journal of Enterprise Information Management 32, no. 4 (July 3, 2019): 585–607. http://dx.doi.org/10.1108/jeim-05-2018-0106.
Full textAbstract:
Purpose Despite the ongoing calls for the incorporation of the cloud utility model, the effect of the cloud on elements of supply chain performance is still an evolving area of research. The purpose of this paper is to develop the architecture of a cloud-based supply chain management (C-SCM) ecosystem and explore how it enhances supply chain responsiveness (SCR). Design/methodology/approach First, the authors discuss the potential benefits that cloud computing can yield, compared to existing mature SCM information systems and solutions through a comprehensive literature review. The authors conceptualise SCR in terms of the level of visibility in the supply chain, supply chain flexibility and rapid detection and reaction to changes, and then the authors build the detailed architecture of a C-SCM system. The proposed ecosystem introduces a view of SCM and the associated practices when transferred to cloud environments. The potential to enhance SCR through the cloud is explored with scenarios on a case of supply chain operations in fashion retail industry. Findings The findings show that the proposed system can enhance all three dimensions of SCR. Implications for supply chain practice and how companies can migrate to a cloud supply chain are drawn. Originality/value Given that the development, creation and delivery of goods and services are increasingly becoming a joint effort of several parties in a supply chain, the authors contribute to the existing literature by introducing a comprehensive C-SCM system and show how companies can enhance their SCR.
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Gu, Li Zhi, Xiao Jun Jie, and Qi Hong. "Approach Toward Parametric Design of Typical Parts and Parts-Library Based on UG." Applied Mechanics and Materials 84-85 (August 2011): 8–13. http://dx.doi.org/10.4028/www.scientific.net/amm.84-85.8.
Full textAbstract:
With the basic tool of the powerful secondary development function of UG NX and based on the analysis of the characteristics of typical mechanical parts, put forward a digital method and system of parametric design for the parts, created the relavent parts-library for the system. In the parametric design, mechanical parts were divided roughly into four classes according to GT. The characteristic parameters were selected from the shared attributes of each class. By utilizing the secondary development tool of UG/Open, compiled, connected by means of Visual C++, and realized the integration of a mechanical-part orientated UG system for parametric design with user-friendly interface and counterpart dynamic-link library files. Taking characteristic parameters of typical parts as the variables, different models were established through man-computer interaction according to size constraint, and then created the parts-library. The system has worked successfully taking the inner gear as example of the typical part, and given expected result. It is shown from the execution of system that the current system with the virtual parts-library can respond the designer's demand fast, avoid repetition, save manpower and time, and improve the speed of new product development significantly.
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Jaruga, A., S. Arabas, D. Jarecka, H. Pawlowska, P. K. Smolarkiewicz, and M. Waruszewski. "libmpdata++ 1.0: a library of parallel MPDATA solvers for systems of generalised transport equations." Geoscientific Model Development 8, no. 4 (April 8, 2015): 1005–32. http://dx.doi.org/10.5194/gmd-8-1005-2015.
Full textAbstract:
Abstract. This paper accompanies the first release of libmpdata++, a C++ library implementing the multi-dimensional positive-definite advection transport algorithm (MPDATA) on regular structured grid. The library offers basic numerical solvers for systems of generalised transport equations. The solvers are forward-in-time, conservative and non-linearly stable. The libmpdata++ library covers the basic second-order-accurate formulation of MPDATA, its third-order variant, the infinite-gauge option for variable-sign fields and a flux-corrected transport extension to guarantee non-oscillatory solutions. The library is equipped with a non-symmetric variational elliptic solver for implicit evaluation of pressure gradient terms. All solvers offer parallelisation through domain decomposition using shared-memory parallelisation. The paper describes the library programming interface, and serves as a user guide. Supported options are illustrated with benchmarks discussed in the MPDATA literature. Benchmark descriptions include code snippets as well as quantitative representations of simulation results. Examples of applications include homogeneous transport in one, two and three dimensions in Cartesian and spherical domains; a shallow-water system compared with analytical solution (originally derived for a 2-D case); and a buoyant convection problem in an incompressible Boussinesq fluid with interfacial instability. All the examples are implemented out of the library tree. Regardless of the differences in the problem dimensionality, right-hand-side terms, boundary conditions and parallelisation approach, all the examples use the same unmodified library, which is a key goal of libmpdata++ design. The design, based on the principle of separation of concerns, prioritises the user and developer productivity. The libmpdata++ library is implemented in C++, making use of the Blitz++ multi-dimensional array containers, and is released as free/libre and open-source software.
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Afanasieva, Irina, Fedor Novikov, and Ludmila Fedorchenko. "Methodology for Development of Event-driven Software Systems using CIAO Specification Language." SPIIRAS Proceedings 19, no. 3 (June 1, 2020): 481–514. http://dx.doi.org/10.15622/sp.2020.19.3.1.
Full textAbstract:
Event-driven software systems, belonging to the class of systems with complex behavior in the scientific literature, are reactive systems, which react to the same input effect in different ways depending on their state and background.
It is convenient to describe such systems using state-transition models utilizing special language tools, both graphical and textual. Methodology for automated development of systems with complex behavior using the designed CIAO language (Cooperative Interaction of Automata Objects), which allows formally specifying the required behavior based on an informal description of the reacting system, is presented.
An informal description of a reacting system can be provided verbally in a natural language or in another way adopted in a specific domain. Further, according to this specification in the CIAO language, a software system for interacting automata in the C++ programming language is generated with a special system.
The generated program implements a behavior guaranteed to correspond to a given specification and original informal description. CIAO provides both graphical and textual notation. Graphic notation is based on an extended notation of state machine diagrams and component diagrams of the unified modeling language UML, which are well established in describing the behavior of event-driven systems.
The text syntax of the CIAO language is described by context-free grammar in regular form. Automatically generated C++ code allows using of both library and any external functions written manually.
At the same time, the evident correspondence of the formal specification and the generated code is preserved on conditions that the external functions conform to their specifications.
As an example, an original solution to D. Knut's problem of a responsive elevator control system is proposed. The effectiveness of the proposed methodology is demonstrated, since the automaton-converter generating the C++ code is presented as a responsive system, is specified in the CIAO language and implemented by the bootstrapping. The proposed methodology is compared with other well-known formal methods for describing systems with complex behavior.
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Hammwöhner, Rainer, and Rainer Kuhlen. "Semantic control of open hypertext systems by typed objects." Journal of Information Science 20, no. 3 (June 1994): 175–84. http://dx.doi.org/10.1177/016555159402000303.
Full textAbstract:
The C(K)onstance Hypertext system (KHS) is an elaborated example of an open hypertext system. Open hypertext systems combine heterogeneous resources and different hypertext applications such as e-mail, text and image hypertexts with access to online databases or other information resources. These hypertexts, to which heterogeneous users have access, grow steadily in size. This paper takes an object-oriented approach and proposes a rigorous typing of hypertext objects to overcome the problems of open hypertext. The advantage of this typing is shown on an e-mail hypertext as a special application of the KHS system. KHS is written in Smalltalk and is being developed on UNIX-machines.
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Liu, Xue Bin, Xi Bin Wang, Chong Ning Li, and San Peng Deng. "The Design and Implementation of the Expert System for Cutting Parameters Based on CLIPS." Applied Mechanics and Materials 385-386 (August 2013): 731–34. http://dx.doi.org/10.4028/www.scientific.net/amm.385-386.731.
Full textAbstract:
Three core content of CLIPS expert system are researched on, namely rule base, fact base and inference engine. Using the production rules, in accordance with CLIPS syntax express the knowledge of cutting parameters, and according to the CLIPS syntax of the fact base, the rule base and the inference engine, knowledge bases of the cutting parameters expert system is built. In Visual C + + programming environment, combined with the CLIPS dynamic link library, by the interactive communication between Visual C + + and CLIPS, the software, cutting parameters expert system, has been developed successfully while has laid a good foundation for the selection of the cutting parameters to optimize.
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Hamza, Ghazoi, Moncef Hammadi, Maher Barkallah, Jean-Yves Choley, Alain Riviere, Jamel Louati, and Mohamed Haddar. "Conceptual design decision support of a mechatronic system using analytical approach with Modelica." Mechanics & Industry 19, no. 1 (2018): 103. http://dx.doi.org/10.1051/meca/2018019.
Full textAbstract:
During conceptual design phase, system architects pre-validate architectures following different constrains. This paper proposes a new pre-designing method applied to a flexible multibody system to characterize its vibrational behavior analytically with Dymola/Modelica language. We study the vibration interaction between perturbations sources (motors) and receivers (electronic cards) through a flexible beam with arbitrary boundary conditions. In fact, a lot of mechatronic systems may have their natural frequencies and mode shapes dependent on their spatial configuration, which affect the dynamic response of the system. This methodology shows that using Modelica, we can implement different boundary conditions, making the element suitable for any multibody simulation. This model can help system architects to study the influence of the boundary conditions on the system response. Two types of boundary conditions are considered in this study, simply supported–simply supported (S-S) and clamped–clamped (C-C). The solution for this issue would be a pre-positioning procedure which targets to provide a support for decision-making on the feasibility of a given system architecture at an early design stage, before proceeding to the detailed design. The simulation results have been validated with respect to the literature and by a comparison with those obtained by the model based on the Beam component which belongs to the Modelica flexible Bodies Library.
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Jang, Suhwa, Young Lee, Byoung Kook Kim, and Hee Yong Chung. "Characterization of Leukemia-Inducing Genes Using the Retroviral cDNA Library." Blood 112, no. 11 (November 16, 2008): 5336. http://dx.doi.org/10.1182/blood.v112.11.5336.5336.
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Abstract Acute myeloid leukemia is a disease caused by oncogenic change(s) of hematopoietic stem cells or progenitor cells. The purpose of this research is to characterize the gene involved in the leukemia induction processes by screening the retroviral cDNA libraries of cellular oncogenes, homeobox genes. The cDNA libraries were constructed by cloning the individual genes to a MSCV retroviral vector backbone. For convenience of detecting the transduced cells and their protein products, the MSCV retroviral vector was modified to include HA tag and GFP marker and ninety cellular oncogenes and 30 homeobox genes were individually cloned and the structural integrity was verified. To screen for the leukemia-inducing genes, 5-FU treated mouse bone marrow cells were transduced with retroviral mixtures of oncogenes, and the cells were transplanted into ten lethally irradiated mice. All ten mice developed acute leukemia between the eight and ten weeks post-transplantation. The oncogenes that were responsible for the leukemia induction were characterized by genomic DNA PCR of the leukemic cells of each mouse. Surprisingly, all ten mice had c-myc genes in their leukemic cells. However, except for three mice, all the mice have additional oncogenes within the leukemic cells. The list of the additional genes include; RAB3D, RAB7B, PDGF-beta, CRK, and PIM-2 and Ras. Theses results show that the c-myc is the major leukemia-inducing oncogenes in our system. In addition, since the initial transduction rate of 5-FU-treated bone marrow just prior to in vivo transplantation was 10.56%, it is highly unlikely that all these additional oncogenes were present in the transplantable leukemic cells just by chance. Therefore, the retroviral cDNA library-mediated leukemia induction system we developed may be an useful system in systematically screening the cooperating oncogenes in leukemia induction. We are currently verifying the cooperating potential of the genes co-transduced with c-myc in inducing leukemia in the same animal model.
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Kaspar, Wendi. "C&RL Spotlight." College & Research Libraries News 80, no. 4 (April 4, 2019): 236. http://dx.doi.org/10.5860/crln.80.4.236.
Full textAbstract:
My first job as a librarian was for a large software company (which shall remain nameless), working in the research library supporting one of its divisions. Almost all of the questions would come by email (at the risk of dating myself, this was the mid-90s) either directly to me or triaged through a request system. I handled questions about market research, software algorithms, trademarks, and anything else that happened to come up. It was a great place to work—one of those beautiful campuses, where the lounge is stocked with free soft drinks and you can come in when you want because everyone puts in much more than 40 hours a week. I learned a lot at a time when computers were transforming libraries.
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Yu, Zhi Qiang, Tai Yong Wang, Yong Wang, Hong Bin Li, Yu Long Wang, and Yang Chen. "Technology of Online Inspection in CNC Machine Tool." Key Engineering Materials 693 (May 2016): 1492–97. http://dx.doi.org/10.4028/www.scientific.net/kem.693.1492.
Full textAbstract:
In this paper, an online inspection system is developed based on TDNC-H8 open CNC system. The system includes motion control, program management, the preservation and processing of the result and other functions. To check the rationality of inspection route, optimize and modify the inspection program, avoid accidental collision, online inspection simulation function is developed with Visual C++ programming tool and OpenGL graphics library.
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Bezzubtsev, Stanislav O., Vyacheslav V. Vasin, Dmitry Yu Volkanov, Shynar R. Zhailauova, Vladislav A. Miroshnik, Yuliya A. Skobtsova, and Ruslan L. Smeliansky. "An Approach to the Construction of a Network Processing Unit." Modeling and Analysis of Information Systems 26, no. 1 (March 15, 2019): 39–62. http://dx.doi.org/10.18255/1818-1015-2019-1-39-62.
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The paper proposes the architecture and basic requirements for a network processor for OpenFlow switches of software-defined networks. An analysis of the architectures of well-known network processors is presented − NP-5 from EZchip (now Mellanox) and Tofino from Barefoot Networks. The advantages and disadvantages of two different versions of network processor architectures are considered: pipeline-based architecture, the stages of which are represented by a set of general-purpose processor cores, and pipeline-based architecture whose stages correspond to cores specialized for specific packet processing operations. Based on a dedicated set of the most common use case scenarios, a new architecture of the network processor unit (NPU) with functionally specialized pipeline stages was proposed. The article presents a description of the simulation model of the NPU of the proposed architecture. The simulation model of the network processor is implemented in C ++ languages using SystemC, the open-source C++ library. For the functional testing of the obtained NPU model, the described use case scenarios were implemented in C. In order to evaluate the performance of the proposed NPU architecture a set of software products developed by KM211 company and the KMX32 family of microcontrollers were used. Evaluation of NPU performance was made on the basis of a simulation model. Estimates of the processing time of one packet and the average throughput of the NPU model for each scenario are obtained.
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Yin, Jing, Wei Gu, Xiao Fang Yang, and Chuan Hua Li. "Design of QT-4.7 LAN Chat System Based on ARM Linux." Advanced Materials Research 926-930 (May 2014): 1906–9. http://dx.doi.org/10.4028/www.scientific.net/amr.926-930.1906.
Full textAbstract:
Instant messaging technologies are becoming more and more mature as network gains popularity and develops rapidly. Instant messaging software such as QQ and Wechat from Tencent, Mitalk and YY Voice are based on C/S mode. In this paper, after completing software development, the platform is migrated and its kernel recompiled. After building root file system and migrating relevant library files, it not only resolves the problems such as Chi-nese gibberish and missing input method after migration, but also designs an instant messaging software for enterprises similar to IP messenger through P2P technology and C++ pro-gramming in QT framework based on Socket communication mechanism, thus realizing messaging and file transfer within LAN.
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Nhi, Nguyen Thi Uyen, Van The Thanh, and Le Manh Thanh. "A SELF-BALANCED CLUSTERING TREE FOR SEMANTIC-BASED IMAGE RETRIEVAL." Journal of Computer Science and Cybernetics 36, no. 1 (February 27, 2020): 49–67. http://dx.doi.org/10.15625/1813-9663/1/1/14347.
Full textAbstract:
The image retrieval and semantic extraction play an important role in the multimedia systems such as geographic information system, hospital information system, digital library system, etc. Therefore, the research and development of semantic-based image retrieval (SBIR) systems have become extremely important and urgent. Major recent publications are included covering different aspects of the research in this area, including building data models, low-level image feature extraction, and deriving high-level semantic features. However, there is still no general approach for semantic-based image retrieval (SBIR), due to the diversity and complexity of high-level semantics. In order to improve the retrieval accuracy of SBIR systems, our focus research is to build a data structure for finding similar images, from that retrieving its semantic. In this paper, we proposed a data structure which is a self-balanced clustering tree named C-Tree. Firstly, a method of visual semantic analysis relied on visual features and image content is proposed on C-Tree. The building of this structure is created based on a combination of methods including hierarchical clustering and partitional clustering. Secondly, we design ontology for the image dataset and create the SPARQL (SPARQL Protocol and RDF Query Language) query by extracting semantics of image. Finally, the semantic-based image retrieval on C-Tree (SBIR\_CT) model is created hinging on our proposal. The experimental evaluation 20,000 images of ImageCLEF dataset indicates the effectiveness of the proposed method. These results are compared with some of recently published methods on the same dataset and demonstrate that the proposed method improves the retrieval accuracy and efficiency.
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Nhi, Nguyen Thi Uyen, Van The Thanh, and Le Manh Thanh. "A SELF-BALANCED CLUSTERING TREE FOR SEMANTIC-BASED IMAGE RETRIEVAL." Journal of Computer Science and Cybernetics 36, no. 1 (February 27, 2020): 49–67. http://dx.doi.org/10.15625/1813-9663/36/1/14347.
Full textAbstract:
The image retrieval and semantic extraction play an important role in the multimedia systems such as geographic information system, hospital information system, digital library system, etc. Therefore, the research and development of semantic-based image retrieval (SBIR) systems have become extremely important and urgent. Major recent publications are included covering different aspects of the research in this area, including building data models, low-level image feature extraction, and deriving high-level semantic features. However, there is still no general approach for semantic-based image retrieval (SBIR), due to the diversity and complexity of high-level semantics. In order to improve the retrieval accuracy of SBIR systems, our focus research is to build a data structure for finding similar images, from that retrieving its semantic. In this paper, we proposed a data structure which is a self-balanced clustering tree named C-Tree. Firstly, a method of visual semantic analysis relied on visual features and image content is proposed on C-Tree. The building of this structure is created based on a combination of methods including hierarchical clustering and partitional clustering. Secondly, we design ontology for the image dataset and create the SPARQL (SPARQL Protocol and RDF Query Language) query by extracting semantics of image. Finally, the semantic-based image retrieval on C-Tree (SBIR\_CT) model is created hinging on our proposal. The experimental evaluation 20,000 images of ImageCLEF dataset indicates the effectiveness of the proposed method. These results are compared with some of recently published methods on the same dataset and demonstrate that the proposed method improves the retrieval accuracy and efficiency.
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Song, Chao, and Ming Fu Yin. "Applying MPC08SP Motion Control Card to the Development of Open CNC System of Grooving Machines." Applied Mechanics and Materials 397-400 (September 2013): 2375–78. http://dx.doi.org/10.4028/www.scientific.net/amm.397-400.2375.
Full textAbstract:
This article take CNC grooving machine as the study project, take the design of open control system based on PC+motion control card as study method, take use of the powerful motion control function and abundant DLL function library of MPC08SP motion control card, apply Visual C++ 6.0 to the development of the underlying process, gives the design of open CNC system of grooving machine, which satisfies the real-time performance and accuracy of control system.
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Dheyaa Ismael, Khansaa, and Stanciu Irina. "Face recognition using viola-jones depending on python." Indonesian Journal of Electrical Engineering and Computer Science 20, no. 3 (December 1, 2020): 1513. http://dx.doi.org/10.11591/ijeecs.v20.i3.pp1513-1521.
Full textAbstract:
<p>In this paper, the proposed software system based on face recognition the proposed system can be implemented in the smart building or any VIP building need security interring in general, The human face will be recognized from a stream of pictures or video feed, this technology recognizes the person according to the specific algorithm, the algorithm that employed in this paper is the Viola–Jones object detection framework by using Python. The task of the proposed facial recognition system consists of two steps, the first one was detected the human face from live video using the webcamera in the computer, and the second step recognizes if this face allowed to enter the building or not by comparing it with the existing database, the two steps depending on the OpenCV python by importing cv2 method for detecting the human face, the frames can be read or written to file with the cv2.imread and cv2.imwrite functions respectively Finally, this proposed software system can be used to control access in smart buildings as a rule and the advancement of techniques connected around there, Providing a security system is one of the most important features must be achieved in the smart buildings, this proposed system can be used as an application in a smart building as a security system. Face recognition is one of the most important applications using today for practical facial recognition, The proposed software system, depending on using OpenCV (Open Source Computer Vision) is a popular computer vision library, in 1999 this library started by Intel. The platform library sets its focus on real-time image processing and includes patent-free implementations of the latest computer vision algorithms. OpenCV 2.3.1 now comes with a programming interface to C, C++, Python, and Android. OpenCV library of python, the three algorithms that will be used in this proposed system. The currently available algorithms are:</p><p>Eigenfaces → createEigenFaceRecognizer()</p><p>Fisherfaces → createFisherFaceRecognizer()</p><p>Local Binary Patterns Histograms → createLBPHFaceRecognizer()</p>Finally the proposed system provide entering to the building just for the authorized person according to face recognition algorithem.<p> </p>