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Welberry, T. R., A. Lee, and K. Owen. "QUASI2D: a program written to demonstrate quasiperiodicity and phason fluctuation." Journal of Applied Crystallography 25, no. 5 (October 1, 1992): 648–52. http://dx.doi.org/10.1107/s0021889892004667.
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A program is described that demonstrates in two dimensions the concepts of quasiperiodic tiling and phason fluctuations. Tiling patterns having perfect fivefold or eightfold quasiperiodicity are displayed on the computer screen at any one of three chosen scales. These patterns are then progressively altered in real time by the application of phason flips to obtain disordered tiling patterns. Energy parameters may be specified to allow preference for different tile-pair combinations in the resulting distributions. In this way, with different combinations of the energies, distributions varying from pure random tiling to ones in which more ordered microdomains are to be seen may be obtained in real time via Monte Carlo simulation.
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Rofik, Abdur, and Sahid Sahid. "Structuring Tenses of English by Islamic Higher Education Students: A Case Study at Universitas Sains Alqur’an." International Journal for Educational and Vocational Studies 1, no. 1 (May 7, 2019): 25. http://dx.doi.org/10.29103/ijevs.v1i1.1391.
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The aims of this study are to reveal errors in structuring tenses and to find out errors of surface structures committed by Islamic Higher Education Students of Universitas Sains Alqur’an, Wonosobo. Subject of the study is 28 students of Islamic Relegion Education Study Program of Tarbiyah Sciences and Teacher Training Faculty of Universitas Sains Alqur’an, Wonosobo in the first semester of the 2018/2019 Academic Year. Data collecting was conducted through written work instruments. In analyzing the data, the writer reads the data sources, indentifies the errors, classifies them, and especially for tense errors, the writer adds the step of data analysis, namely calculating the errors to find the percentage. The results convey that with regard to tense aspects, the student errors involve simple present 13,54%, present progressive 30,2%, present perfect 28,64%, and present perfect progressive tense 27,6%. Then, with regard to surface structures, the factors of errors committed are omission, addition, misformation, and misordering.
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Tesauro, Gerald. "Neurogammon Wins Computer Olympiad." Neural Computation 1, no. 3 (September 1989): 321–23. http://dx.doi.org/10.1162/neco.1989.1.3.321.
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Neurogammon 1.0 is a backgammon program which uses multilayer neural networks to make move decisions and doubling decisions. The networks learned to play backgammon by backpropagation training on expert data sets. At the recently held First Computer Olympiad in London, Neurogammon won the backgammon competition with a perfect record of five wins and no losses, thereby becoming the first learning program ever to win a tournament.
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Jenkins, Marcia W. "Effect of a Computerized Individual Education Program (IEP) Writer on Time Savings and Quality." Journal of Special Education Technology 8, no. 3 (December 1986): 55–66. http://dx.doi.org/10.1177/016264348700800306.
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This study compared the amount of time 42 special education teachers in the state of Hawaii took to write handwritten and computer-generated Individual Education Programs (IEPS) after 12 hours of training on “IEP Writer,” a word processing method. The subjects were randomly divided into two groups. Group 1 wrote IEPs using their newly learned computer skills and Group 2 wrote IEPs by writing them out by hand. It was hypothesized that the computer method would take significantly less time and the quality of the computer-generated IEP would be significantly higher. Both hypotheses were compared by t-tests. Results showed: 1) The computer group took significantly less time to write their IEPs. 2) The quality of the computer generated IEP was significantly higher than the handwritten IEP.
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Juwita, Juwita, Agus Riadi, and Magpika Handayani. "THE STUDENTS’ PERCEPTION OF USING U-DICTIONARY IN LEARNING PRONUNCIATION AT STBA PONTIANAK." Jurnal Ilmiah Spectral 6, no. 1 (September 1, 2020): 041–51. http://dx.doi.org/10.47255/spectral.v6i1.46.
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This study aims at identifying the perception of students in using U-Dictionary in learning pronunciation. Speaking is one of the most challenging abilities to develop foreign language learners such as Indonesian and one of the components of speaking is pronunciation. People often find a problem with pronunciation when they speak, read, or listen to English words. In the digital era, people can learn anything from the internet platform, such as using online learning through apps at smartphones. This study is qualitative research and the writer describe the students’ perception in using U dictionary in learning pronunciation. The writers did an observation to English study program students from the fourth semester who are eligible for this research. There were 30 students participated as respondents and all of them were interviewed in order to have true information. The result shows that most of the students think that as English study program students, learning pronunciation is important, and they perceived that the “perfect English pronunciation feature” in U-Dictionary is practical to overcome difficulties in learning pronunciation in a fun way
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Lightfoot, Geoff, and Simon Lilley. "Writing Utopia." Sociological Review 50, no. 1_suppl (May 2002): 155–68. http://dx.doi.org/10.1111/j.1467-954x.2002.tb03583.x.
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Did you know that the first Matrix was designed to be a perfect human world? Where none suffered, where everyone would be happy. It was a disaster. No one would accept the program. Entire crops were lost. Some believed we lacked the programming language to describe your perfect world. But I believe that, as a species, human beings define their reality through suffering and misery. The perfect world was a dream that your primitive cerebrum kept trying to wake up from. (AGENT SMITH, computer simulacrum: Wachowski & Wachowski, 1999)1
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NING, QI, VINCENT VAN DONGEN, and GUANG R. GAO. "AUTOMATIC DATA AND COMPUTATION DECOMPOSITION FOR DISTRIBUTED-MEMORY MACHINES." Parallel Processing Letters 05, no. 04 (December 1995): 539–50. http://dx.doi.org/10.1142/s0129626495000485.
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In this paper, we develop an automatic compile-time computation and data decomposition technique for distributed-memory machines. Our method handles complex programs containing perfect and non-perfect loop nests with or without loop-carried dependences. Applying our algorithms, a program will be divided into collections (called clusters) of loop nests, such that data redistributions are allowed only between the clusters. Within each cluster of loop nests, decomposition and data locality constraints are formulated as a system of homogeneous linear equations which is solved by polynomial time algorithms. Our algorithm can selectively relax data locality constraints within a cluster to achieve a balance between parallelism and data locality. Such relaxations are guided by exploiting the hierarchical program nesting structures from outer to inner nesting levels to keep the communications at a outer-most level possible.
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Mairson, Harry G. "The effect of table expansion on the program complexity of perfect hash functions." BIT 32, no. 3 (September 1992): 430–40. http://dx.doi.org/10.1007/bf02074879.
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Ginsberg, M. L. "GIB: Imperfect Information in a Computationally Challenging Game." Journal of Artificial Intelligence Research 14 (June 1, 2001): 303–58. http://dx.doi.org/10.1613/jair.820.
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This paper investigates the problems arising in the construction of a program to play the game of contract bridge. These problems include both the difficulty of solving the game's perfect information variant, and techniques needed to address the fact that bridge is not, in fact, a perfect information game. GIB, the program being described, involves five separate technical advances: partition search, the practical application of Monte Carlo techniques to realistic problems, a focus on achievable sets to solve problems inherent in the Monte Carlo approach, an extension of alpha-beta pruning from total orders to arbitrary distributive lattices, and the use of squeaky wheel optimization to find approximately optimal solutions to cardplay problems. GIB is currently believed to be of approximately expert caliber, and is currently the strongest computer bridge program in the world.
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Velikovsky, J. T. "Introducing the Robo–Raconteur Artificial Writer Or." International Journal of Art, Culture and Design Technologies 6, no. 2 (July 2017): 28–54. http://dx.doi.org/10.4018/ijacdt.2017070103.
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This article invites readers to participate in a survey on computational creativity. It asks: (a) Can computers be creative? and (b) Can algorithmic computational creativity teach us about human creativity? The standard definition of creativity is adopted. The article is in two parts. Part One introduces a new interactive artificial–writer computer program, an Excel workbook containing six functional sub–modules, namely: 1) A Top 20 RoI Movie Pitch Combiner; 2) A Bottom 20 RoI Movie Pitch Element Combiner; 3) A Random Movie Pitcher; 4) A Movie Pitch Selector which judges, scores, and ranks generated pitches in evolutionary survival tournaments; 5) An Ironic Character Generator; and finally, 6) A Random Transmedia Story Universe Pitch Generator. Readers are invited to play–test The Robo–Raconteur and complete a short (5–minute) online survey: Was the artificial writer creative? Part Two explains the Evolutionary Systems Theory of Creativity that underpins the software.
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Assaf, Lori Czop. "Exploring Identities in a Reading Specialization Program." Journal of Literacy Research 37, no. 2 (June 2005): 201–36. http://dx.doi.org/10.1207/s15548430jlr3702_4.
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This qualitative study used theories of language and learning to explore the identities of one preservice teacher in a reading specialization program. Data sources included archived online course responses, interviews, journals, and an electronic portfolio. Analysis indicates that the participant used multiple discourses as an immigrant, multilanguage learner, and writer/poet to make sense of her learning in the program. These discourses shaped her identities as a teacher and influenced how her peers recognized her. Analyzing online responses over time added to the uniqueness of this study because it allowed the researcher to tap into shared discourse related to course readings and field-based experiences. Negotiating multiple discourses within a learning community influenced the participant's instructional decisions as a student teacher and fashioned her identity with other future teachers. Implications include the significance of exploring multiple identities in relation to a clearly identified program mission, using computer mediated discussions to nurture collaborative reflection, and understanding how a group's common values and commitments can enhance one's teaching identity.
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D.K, Titis Puspitaningrum, and Riski Aprilianita. "Accurate Training Assistance for Accounting Vocational High School Teachers to Improve the Capability of Computer Accounting Program." SPIRIT OF SOCIETY JOURNAL 3, no. 1 (March 29, 2020): 58–65. http://dx.doi.org/10.29138/scj.v3i1.1015.
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Partner problems faced in Accounting Vocational High School Teachers in Surabaya also become a problem for other schools. Learning about accurate is still being a discourse so far and it requires teachers to improve their abilities and knowledge. This makes all high school especially Accounting Vocational High school teachers need to be trained about accurate learning. The purpose of this training is to develop their knowledge related to computers and fulfill the needs of companies who need to use the accurate program. As a result, this program will bring benefit for graduated students so they will easily find a job in the future. To solve this problems, the writer did the assistance on the Subject Teacher Organization (MGMP) Accounting group in Surabaya by providing accurate training. The average results of pre and posttest increases 18.25 points. The result obtained from pre and posttest is very satisfying which 87.5% of teachers received higher point after doing the training. Only one teacher whose point did not change and two teachers whose point decreased and only one teacher whose point decreased into 3
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Kang, Shinjin, Donggyun Kim, and Youngbin Kim. "A visual-physiology multimodal system for detecting outlier behavior of participants in a reality TV show." International Journal of Distributed Sensor Networks 15, no. 7 (July 2019): 155014771986488. http://dx.doi.org/10.1177/1550147719864886.
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This study proposes an outlier detection system based on the visual-physiology multimodal data system for a Korean reality TV show, “Perfect on Paper.” The goal of this system is to provide the program production team and the master of ceremonies with real-time facial expressions and bio-signal analysis results of program participants. Using this information, the program production team and master of ceremonies can easily identify the participants with unusual behavior. We propose an insole-type hardware that measures the wearer’s skin conductivity, temperature, and motion. We also suggest a dynamic time warp-based clustering algorithm for the outlier and micro-expression detection technique. The system was developed starting from the program planning phase through a 6-month period in collaboration with the production team. The developed system analyzed the biometric information and facial expressions of 88 participants in 11 episodes and provided rapid feedback to the production team at the shooting spot in real time. Finally, we present a case where a visual-physiology multimodal system can be useful for a real TV broadcasting production.
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Feldewerth, Gerald B. "Indexing and simulation of electron diffraction patterns using the microcomputer." Proceedings, annual meeting, Electron Microscopy Society of America 48, no. 4 (August 1990): 868–69. http://dx.doi.org/10.1017/s0424820100177477.
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Microscopists in the material science field must work with electron diffraction patterns. The ability to quickly index unknown patterns and simulate patterns of known phases would make this task much easier. Computers present the perfect solution for doing the tedious calculations involved in indexing and simulation. The following paper describes the program SIMDEX, developed by the author for these applications.SIMDEX is a set of computer programs and data base files. All of the programs are self-contained, executable files designed to run on IBM or compatible computer systems. All data files, while by no means comprehensive, are easily updated using any word processor.The files in simdex and their function are:1.Main program - index and simulate diffraction patterns.2.Plot program - produce screen image of simulated patterns.3.Menu program - change control between two working programs.4.Material data - hold lattice parameters of materials.5.Position data - hold atom positions for each space group.6.Pattern data - hold data for experimental patterns.
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PETTOROSSI, ALBERTO, MAURIZIO PROIETTI, and VALERIO SENNI. "Transformations of logic programs on infinite lists." Theory and Practice of Logic Programming 10, no. 4-6 (July 2010): 383–99. http://dx.doi.org/10.1017/s1471068410000177.
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AbstractWe consider an extension of logic programs, called ω-programs, that can be used to define predicates overinfinite lists. ω-programs allow us to specify properties of the infinite behavior of reactive systems and, in general, properties of infinite sequences of events. The semantics of ω-programs is an extension of the perfect model semantics. We present variants of the familiar unfold/fold rules which can be used for transforming ω-programs. We show that these new rules are correct, that is, their application preserves the perfect model semantics. Then we outline a general methodology based on program transformation for verifying properties of ω-programs. We demonstrate the power of our transformation-based verification methodology by proving some properties of Büchi automata and ω-regular languages.
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Chen, Sheng, and Antonio J. Conejo. "Strategic-Agent Equilibria in the Operation of Natural Gas and Power Markets." Energies 13, no. 4 (February 17, 2020): 868. http://dx.doi.org/10.3390/en13040868.
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We consider strategic gas/power producers and strategic gas/power consumers operating in both gas and power markets. We build a flexible multi-period complementarity model to characterize day-ahead equilibria in those markets. This model is an equilibrium program with equilibrium constraints that characterizes the market behavior of all market agents. Using a realistic case study, we analyze equilibria under perfect and oligopolistic competition. We also analyze equilibria under different levels of information disclosure regarding market outcomes. We study as well equilibria under different ownership schemes: no hybrid agent, some hybrid agents, and only hybrid agents. Finally, we derive policy recommendations for the regulators of both the gas and the power markets.
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Anggrawan, Anthony, Raisul Azhar, Bambang Krismono Triwijoyo, and Mayadi Mayadi. "Developing Application in Anticipating DDoS Attacks on Server Computer Machines." MATRIK : Jurnal Manajemen, Teknik Informatika dan Rekayasa Komputer 20, no. 2 (May 30, 2021): 427–34. http://dx.doi.org/10.30812/matrik.v20i2.410.
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The use of server computer machines in companies is primarily a web hosting server that is very easy to experience threats, especially external security threats such as attempts to infiltrate, hacking, viruses, and other malicious attacks. Having a secure server is indispensable for working online and especially if involved in business-related network transactions. The Server's realization to be safe from threats is to protect the server machine's security on the hardware and software side and pay attention to network security that goes to the server machine. Generally, firewall applications on router devices have configuration limitations in securing the network, namely non-integrated applications. In other words, it is necessary to manage the perfect firewall configuration to anticipate Distributed Daniel attacks of Service (DDoS) attacks. Therefore, this study aims to integrate existing firewall applications for router devices into an integrated program to secure the network. The methodology used is the Network Development Life Cycle (NDLC). The research results on this developed application program can overcome DDoS attacks without setting up a firewall on the router device and can automatically monitor DDoS attack activities from outside the Server. Securing servers from DDoS attacks without setting up a firewall on the router device and automating the monitoring of DDoS attack activity from outside the Server are the novelties of this study that have not been available in previous studies.
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Li, Hong Xiang. "The Development and Study of Calculating Compass Error Software." Advanced Materials Research 230-232 (May 2011): 1072–78. http://dx.doi.org/10.4028/www.scientific.net/amr.230-232.1072.
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With the principle, methods and steps of calculating compass error from observing the low height sun azimuth, the software program about calculating compass error based on VB (Visual Basic) environment has been given out. By analyzing the data regularity of Nautical Almanac, get the result that the data of Nautical Almanac shows the pattern of an arithmetic series, then with the data regularity and Compass Error’s calculating formula, a perfect software of calculating Compass Error is designed with Computer language Visual Basic. The data from observation and given can be put into the software program directly, avoid the complex of table lookup and data calculation, the software program has great effect to reduce the amount of calculation and raise the speed, precision and accuracy of calculating compass error.
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Hendartie, Susi. "Sistem Informasi Tugas Akhir Mahasiswa pada Program Studi STMIK Palangkaraya Berbasis Web Mobile." Jurnal Sains Komputer dan Teknologi Informasi 1, no. 2 (March 17, 2019): 31–37. http://dx.doi.org/10.33084/jsakti.v1i2.874.
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Information systems and computer technology was developing rapidly because for information needed. The development of information technology. Could not separated from develop of computer technology, because computer was a media that could make easy to finish their work. The Change and dynamics of society�s grown rapidly with developmen of information technology that requires effective and efficient in terms of time. One of them helped in the process of final exam. The writer interest to make an information system based on mobile web that can solve the problem. The system will make based on object with the title make a data of final exam information system in Faculty of STMIK Palangkaraya based on mobile web.
The results of this study are expected by the online aplication Final exam in faculty of STMIK Palangkaraya final and students to sign the final task quikly and accurately to assisted help faculty STMIK of Palangkaraya to collected a data of final exam and for student to sign. Final exam Seminar proposal, Final task quikkly and accurately. The collection of data by used this aplication also does not consume a lot of time and money because it can reach Final registration which is outside the city, outside the island even residing outside the country though.
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Guha, A. "Effects of internal combustion and non-perfect gas properties on the optimum performance of gas turbines." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 217, no. 9 (September 1, 2003): 1085–99. http://dx.doi.org/10.1243/095440603322407317.
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With the help of a purpose-built computer program the separate and combined effects of the various aspects of internal combustion and non-perfect gas properties on the optimum performance of gas turbines are examined. The effects of variation of specific heat, addition of fuel mass, pressure losses and dissociation are elucidated. The numerical results have been extensively compared with closed-form analytical solutions and a linear perturbation analysis. The accuracy of a standard, approximate method for predicting gas turbine performance is assessed and its various limitations are identified. The newly established concept of optimum turbine entry temperature is further explored.
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Sadeqi Azer, Erfan, Farid Rashidi Mehrabadi, Salem Malikić, Xuan Cindy Li, Osnat Bartok, Kevin Litchfield, Ronen Levy, et al. "PhISCS-BnB: a fast branch and bound algorithm for the perfect tumor phylogeny reconstruction problem." Bioinformatics 36, Supplement_1 (July 1, 2020): i169—i176. http://dx.doi.org/10.1093/bioinformatics/btaa464.
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Abstract Motivation Recent advances in single-cell sequencing (SCS) offer an unprecedented insight into tumor emergence and evolution. Principled approaches to tumor phylogeny reconstruction via SCS data are typically based on general computational methods for solving an integer linear program, or a constraint satisfaction program, which, although guaranteeing convergence to the most likely solution, are very slow. Others based on Monte Carlo Markov Chain or alternative heuristics not only offer no such guarantee, but also are not faster in practice. As a result, novel methods that can scale up to handle the size and noise characteristics of emerging SCS data are highly desirable to fully utilize this technology. Results We introduce PhISCS-BnB (phylogeny inference using SCS via branch and bound), a branch and bound algorithm to compute the most likely perfect phylogeny on an input genotype matrix extracted from an SCS dataset. PhISCS-BnB not only offers an optimality guarantee, but is also 10–100 times faster than the best available methods on simulated tumor SCS data. We also applied PhISCS-BnB on a recently published large melanoma dataset derived from the sublineages of a cell line involving 20 clones with 2367 mutations, which returned the optimal tumor phylogeny in <4 h. The resulting phylogeny agrees with and extends the published results by providing a more detailed picture on the clonal evolution of the tumor. Availability and implementation https://github.com/algo-cancer/PhISCS-BnB. Supplementary information Supplementary data are available at Bioinformatics online.
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Sikora, Wiesława, Franciszek Białas, and Lucjan Pytlik. "MODY: a program for calculation of symmetry-adapted functions for ordered structures in crystals." Journal of Applied Crystallography 37, no. 6 (November 11, 2004): 1015–19. http://dx.doi.org/10.1107/s0021889804021193.
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This paper describes a computer program, based on the theory of groups and representations, which calculates symmetry-adapted functions used for the description of various ordered structures in crystals. It is assumed that the ordered structure, which is formed by a configuration of occupational probabilities, ion displacements, magnetic moments, quadrupolar moments or other local physical quantities, is obtained from a high-symmetry crystal structure with a given space groupG, as a result of a symmetry-lowering phase transition. The detailed characteristics of the phase transition are given by the specification of the irreducible representations of groupG, active in the transition. The symmetry-adapted functions obtained from the calculation are perfect tools for the construction of model structures, which can be used for comparison with experimental (e.g.neutron diffraction) data, and can be a great help in numerical data elaboration by reducing the number of adjustable parameters describing the structure of a given symmetry.
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Zhumatayev, Nurlybek, Zhanat Umarova, Gani Besbayev, and Almira Zholshiyeva. "Development and Calculation of a Computer Model and Modern Distributed Algorithms for Dispersed Systems Aggregation." International Journal of Distributed Systems and Technologies 11, no. 2 (April 2020): 56–68. http://dx.doi.org/10.4018/ijdst.2020040105.
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In this work, an attempt has been made to eliminate the contradiction of the Smoluchowski equation, using modern distributed algorithms for creating calculation algorithm and implementation a program for building a more perfect model by changing the type of the kinetic equation of aggregation taking into account the relaxation times. On the basis of the applied Mathcad package, there is a developed computer model for calculating the aggregation of dispersed systems. The obtained system of differential equations of the second order is solved by the Runge-Kutt method. The authors are presetting the initial conditions of the calculation. A subsequent analysis was made of the obtained non-local equations and the study of the behavior of solutions of different orders. Also, this research can be aimed at the generalization of the proposed approach for the analysis of aggregation processes in heterogeneous dispersed systems, involving the creation of aggregation models, taking into account both time and space non-locality.
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Ulianytska, Nataliia, Stepan Vadziuk, Nataliya Byelikova, Svitlana Indyka, and Oksana Usova. "Violation of the Teenagers-Computer Users’ Binocular Vision and Pecularities of its Restoration." Physical education, sports and health culture in modern society, no. 2(38) (June 30, 2017): 182–87. http://dx.doi.org/10.29038/2220-7481-2017-02-182-187.
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According to WHO experts, vision is vulnerable to computer loads. Computer users have complaints, combined by the terms «visual fatigue», «computer vision syndrome», which include a complex of violations in the system of refraction-accommodation. We did not find any research on the peculiarities of senior students’ binocular vision with emmetropia when they are working with a personal computer, and therefore we decided to study this issue. 63 healthy school age senior students were examined, those with emmetropic refraction but without ophthalmic, somatic and psychological abnormalities. Chromatic angle of view and chromatic stereoscopy were studied with the help of special computer techniques. The survey was conducted in three stages. At the first stage, we studied the effect of a one-hour nonstop work in front of the computer monitor on the visual functions, at the second one – their state after a 15 minute passive rest. The third stage involved implementing our own program «Saving and Restoration of Vision» anddetermining the investigated parameters. The «Saving and Restoration of Vision» program contains special eye exercises, as well as those for the shoulder and neck with breath-holding elements. It is ascertained that high school students’ one-hour work at the computer leads to deteriorating chromatic angle of view as well as chromatic stereoscopy. Herewith, the perfect match frequency of test objects decreased by 14,5 and 24,2 % respectively. Applying a set of rehabilitation exercises after a one-hour computer work allowed to restore the binocular vision to the original state, while a passive fifteen-minute rest after the computer visual load did not give such results. Thus, the study of senior students’ binocular vision with emmetropic refraction, after one hour of work, showed its violation, which can be eliminated by a complex of rehabilitation exercises from the authors' program «Saving and Restoration of Vision».
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MOFFAT, A. S. "New Graphics Program Debuts in Concert Hall: By simulating sound in visual form two Cornell computer scientists are helping design acoustically perfect concert halls." Science 245, no. 4925 (September 29, 1989): 1452. http://dx.doi.org/10.1126/science.245.4925.1452.
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Williams, Flossie. ""Computer Assisted Instruction in Learning Science Concepts at Eighth Standard Level - An Experiment "." Artha - Journal of Social Sciences 8, no. 1 (January 1, 2009): 18. http://dx.doi.org/10.12724/ajss.14.3.
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Traditional method of teaching, wherever it is practiced, has become non professional in the field of Educational Technology. It is a universal problem but its incidence is more in underdeveloped countries like India .That's why , NPE 1986 and Revised Educational policies emphasized on the application of technology in the field of Education. Therefore ,the State government came forward to create an awareness of C.A.I. & C.A.L. among class room teachers through software companies like INTEL WIPRO etc., by organizing training program viz., 'Teach To The Future'. However, the present study deals with the influence of ComputerAssisted Instruction in Learning Biological science concepts like Bacteria , Fungi , Algae, Virus , Protozoans (Micro organism) on eighth standard students. The present study resulted in the highest performance by the Experimental group in their post test compared to Controlled group. The Experimental group showed remarkable improvement in the number of first classes. The slow learners proved their success by achieving 100% result. These students remained active through out the sessions in the Experimental group as compared with controlled group. The 't' test was found to be significant. Performance of boys and girls in the post test showed negative correlation,which was perfect.
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Albaba, Mouhamad Samer Ehsan, Ahmad Al-Abdo, and Yasser Khadra. "Calculation the precision of the conversion of bio-signals (heart sounds) in analog to digital and digital to analog conversion processes in ATmega 8 microcontroller processors using computer simulation." Association of Arab Universities Journal of Engineering Sciences 26, no. 4 (December 31, 2019): 105–12. http://dx.doi.org/10.33261/jaaru.2019.26.4.013.
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The research aims to calculate the precision transfer from the analogue to digital convertor (ADC) and the digital to analogue convertor (DAC) of the ATmega microcontroller series that are widely used in various circuits and their application of weak signals such as boi-signals, especially heart sounds signals.We chose the ATmega8 microcontroller and performed the measurements and results on the first heart sound (S1) after enforcement the simulations of an electronic stethoscope using the famous program proteus8 for electronic systems. We performed the analogue to digital conversion (ADC) for 20 samples of the signal and then we performed the opposite process DAC using 2R-R resistor network with 10 inputs.The results obtained showed a near perfect match between the signals before and after the conversion. Which suits this type of application.
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Hariyanto, Bambang. "ISTILAH-ISTILAH KHUSUS DALAM CHATTING (Sebuah Analisis Sosiopragmatik)." Adabiyyāt: Jurnal Bahasa dan Sastra 9, no. 2 (December 30, 2010): 294. http://dx.doi.org/10.14421/ajbs.2010.09205.
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This paper aims at describing the use of language on the internet, especially language terms in chatting. It is claimed that the language terms have an important role for the chatters to make interaction and relationship with each other for certain purposes. The important role of language can be seen from the fact that many chatters use different language styles and speech variations in chatting over the Internet Relay Chat (IRC). The model of IRC communication is a kind of communication media for communication (chatting) by using computer keyboard in writing symbols or "emoticons", and codes (register) in the conversation with other chatters. The writer uses descriptive method combined with socio-pragmatics approach of Grice’s Maxim theories to explain the special terms of language use in chatting. The study was based on the data from 13 speech channels and 10 couples of private speech on mIRC program and YM in Yogyakarta area. Based on the elaboration, the writer has found four criteria of chatting conversation as follows. (1) Chatting has a special term in the use of codes (register) for conveying something to their partners in speaking, such as abbreviations. (2) Chatting has special forms of Emoticon. (3) Chatting has special identity codes and (4) Chatting has special lengthened the words.
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Mia, Ar Mia. "Pengaruh Teknologi Informasi Terhadap akhlak siswa kelas V SDN 147 Pekanbaru." el-Ibtidaiy:Journal of Primary Education 2, no. 2 (November 28, 2019): 74. http://dx.doi.org/10.24014/ejpe.v2i2.8228.
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Education of behavior represent especial problems which always become human being challenge in as long as history civilization of nations [in] world. history indicating that a[n nation will be sturdy if its sturdy behavior conversely a[n nation will collapse if its behavior destroy This research aim to to know what is there [is] influence which are positive [among/between] Penggunaaan Information Technology with student behavior of SD Country 147 Pekanbaru. To obtain;get required [by] data [is] writer use three data collecting technique that is: (1) Enquette, ( 2) Documentation Population in this research [is] Class student of V [in] SD Country 147 Town of Pekanbaru amounting to 139 student people. Because to the number of population, hence writer take sampel that is 25% from existing population with technique of Proposional Random Sampling. Become sampel of this research that is counted 35 student people. In quantitative data processing, writer of technique cave analyse quantitative approach with technique cave analyse linear regresi with Smallest Square method by using computer program of SPSS Windows version for 18.0 Conclusion that pursuant to reached persetase in this research can know that there is influence which [is] signifikan [among/between] Usage of Information Technology to student behavior. Influence storey;level [among/between] both variable reside in [at] high or strong category with reng ( 0,700 - 0,900), that is equal to 0,794. While coefficient of determinasi( Square R) [is] 0,631, Contribution information technology to student behavior equal to 0,631 X 100 = 63,1 % and rest influenced by other factor. this situation indicate that active progressively student in using Information Technology, hence student behavior progressively shift from behavior of Islami.
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Xu, Qingyun, Bing Xu, and Yi He. "Channel coordination through quality improvement with brand halo effect." RAIRO - Operations Research 53, no. 4 (September 10, 2019): 1407–25. http://dx.doi.org/10.1051/ro/2018039.
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Product quality depends on the quality investment of the manufacturer and quality decisions of the supplier. Therefore, many firms and researchers pay considerable attention to supply quality management. Considering a supply chain that includes two competing suppliers and one manufacturer, this paper investigates the influences of competition and the “brand halo” effect on the quality strategies of channel members, and explores the potential coordinating power of the bilateral participation contract. Utilizing differential game theory, this paper compares and analyzes the quality strategies of all channel members under three different scenarios: (i) decentralized scenario within a subsidy program, (ii) integrated scenario, and (iii) bilateral participation contract. Our results confirm the following results. (1) The manufacturer may not grant a subsidy to the supplier if two final products are highly competitive. (2) Supply chain members are more likely to join the bilateral participation contract if the “brand halo” effect is large. (3) The bilateral participation contract can achieve perfect coordination if the competition is weak or if a transfer payment policy exists.
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Sokibi, Petrus. "Pembuatan Perangkat Lunak Sistem Informasi Penjualan Tunai Berbasis WEB Di PT. Propan Raya Cirebon." ITEJ (Information Technology Engineering Journals) 1, no. 2 (December 28, 2016): 34–45. http://dx.doi.org/10.24235/itej.v1i2.9.
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he rapidly Technology Progress, especially in Computer, is very useful to the human in doing their job. Nowadays, the global era, every business needs a tool, Computer, to support their activities, especially to process data and information. In this research, the writer presents the topic titled: ”The Building of Software for Information System in Cash Selling by using WEB at PT. Propan Raya Cirebon” as the development of the existing system from manual to the computerized system. This system is built by using PHP language program and MySql as the database storage. In this application, the user can process the selling transaction, input goods, and consumer data. When the transaction is being processed, the system will process the updating of stock in the database automatically, meanwhile, the user can determine the stocking in the store directly. Based on the research done on the trial, the Information system of cash selling has been successfully processed.
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Hofstadter, Douglas. "Essay in the Style of Douglas Hofstadter." AI Magazine 30, no. 3 (July 7, 2009): 82. http://dx.doi.org/10.1609/aimag.v30i3.2256.
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The following article was written in the style of my good friend the writer and cognitive scientist Doug Hofstadter. It was written not by a human being, but by my computer program "EWI" (an acronym for "Experiments in Writing Intelligence"). EWI was fed the texts of two of Hofstadter's books — namely, Gödel, Escher, Bach (winner of the Pulitzer Prize for General Nonfiction in 1980) and Metamagical Themas — and then, following its code, EWI carefully analyzed these two books for their uniquely Hofstadterian stylistic elements and features, after which it recombined these stylistic elements in new fashions. EWI thereby came up with some 25 new and highly diverse "Hofstadter articles", one of which is given below, and at the very end the article is followed by a brief commentary about EWI and its output, by Hofstadter himself.
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Bennett, Holly, Jennifer Vincenzo, and Chris Oholendt. "A Survey of Older Adults’ Perspectives of In-Person and Virtual Parkinson’s-Specific Exercise Classes." Innovation in Aging 4, Supplement_1 (December 1, 2020): 932. http://dx.doi.org/10.1093/geroni/igaa057.3416.
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Abstract Due to COVD-19, many health/wellness programs transitioned from in-person to virtual. This mixed methods study aims to explore older adults with Parkinson’s disease (PD) perceptions of in-person versus virtual Parkinson’s-specific exercise classes. Attitudes, perceptions, and experiences were determined through focus groups (n=9; Male=4; aged 75 years) among older adults with PD and an online survey (n=23; Male=14; aged 74 years). Eighteen respondents attended both in-person and virtually (n=18; Male=9). Four respondents only attended in-person, citing reasons such as difficulty with computer access to virtual classes, limited internet, easier accessibility to in-person classes, and physical injury preventing attendance to any classes. Respondents who participated in both delivery methods preferred virtual classes. Time, convenience, comfort at home, and not having to navigate transportation barriers supported participants’ preference for virtual classes. The majority of respondents indicated their fatigue and mental health were either unchanged or improved. Eighty-nine percent reported improved mobility since attending either class; specifically, in balance (n=8), flexibility (n=7), and coordination (n=3). Older adults with PD who attended both classes had minimal difficulty with computer usage and accessing the virtual program with only one participant reporting difficulty transitioning from in-person to virtual classes. Seventy percent stated they would enjoy a combination of on-site and virtual programming. Eighty-nine percent and seventy-seven perfect felt the virtual-based program was safe and beneficial, respectively. Participants who transitioned from an in-person to a virtual exercise program for people with Parkinson’s disease felt the program was safe, effective, and improved or prevented declines in their mobility.
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Bhatelé, Abhinav, and Laxmikant V. Kalé. "Benefits of Topology Aware Mapping for Mesh Interconnects." Parallel Processing Letters 18, no. 04 (December 2008): 549–66. http://dx.doi.org/10.1142/s0129626408003569.
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The fastest supercomputers today such as Blue Gene/L, Blue Gene/P, Cray XT3 and XT4 are connected by a three-dimensional torus/mesh interconnect. Applications running on these machines can benefit from topology-awareness while mapping tasks to processors at runtime. By co-locating communicating tasks on nearby processors, the distance traveled by messages and hence the communication traffic can be minimized, thereby reducing communication latency and contention on the network. This paper describes preliminary work utilizing this technique and performance improvements resulting from it in the context of a n-dimensional k-point stencil program. It shows that even for simple benchmarks, topology-aware mapping can have a significant impact on performance. Automated topology-aware mapping by the runtime using similar ideas can relieve the application writer from this burden and result in better performance. Preliminary work towards achieving this for a molecular dynamics application, NAMD, is also presented. Results on up to 32,768 processors of IBM's Blue Gene/L, 4,096 processors of IBM's Blue Gene/P and 2,048 processors of Cray's XT3 support the ideas discussed in the paper.
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Arceri, Vincenzo, and Isabella Mastroeni. "Analyzing Dynamic Code." ACM Transactions on Privacy and Security 24, no. 2 (February 2021): 1–38. http://dx.doi.org/10.1145/3426470.
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Dynamic languages, such as JavaScript, employ string-to-code primitives to turn dynamically generated text into executable code at run-time. These features make standard static analysis extremely hard if not impossible, because its essential data structures, i.e., the control-flow graph and the system of recursive equations associated with the program to analyze, are themselves dynamically mutating objects. Nevertheless, assembling code at run-time by manipulating strings, such as by eval in JavaScript, has been always strongly discouraged, since it is often recognized that “ eval is evil ,” leading static analyzers to not consider such statements or ignoring their effects. Unfortunately, the lack of formal approaches to analyze string-to-code statements pose a perfect habitat for malicious code, that is surely evil and do not respect good practice rules, allowing them to hide malicious intents as strings to be converted to code and making static analyses blind to the real malicious aim of the code. Hence, the need to handle string-to-code statements approximating what they can execute, and therefore allowing the analysis to continue (even in the presence of dynamically generated program statements) with an acceptable degree of precision, should be clear. To reach this goal, we propose a static analysis allowing us to collect string values and to soundly over-approximate and analyze the code potentially executed by a string-to-code statement.
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Herrera, R., and A. Gómez. "Multislice calculations for quasi-periodic and non-periodic objects." Proceedings, annual meeting, Electron Microscopy Society of America 48, no. 4 (August 1990): 138–39. http://dx.doi.org/10.1017/s0424820100173820.
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Computer simulations of electron diffraction patterns and images are an essential step in the process of structure and/or defect elucidation. So far most programs are designed to deal specifically with crystals, requiring frequently the space group as imput parameter. In such programs the deviations from perfect periodicity are dealt with by means of “periodic continuation”.However, for many applications involving amorphous materials, quasiperiodic materials or simply crystals with defects (including finite shape effects) it is convenient to have an algorithm capable of handling non-periodicity. Our program “HeGo” is an implementation of the well known multislice equations in which no periodicity assumption is made whatsoever. The salient features of our implementation are: 1) We made Gaussian fits to the atomic scattering factors for electrons covering the whole periodic table and the ranges [0-2]Å−1 and [2-6]Å−1.
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Tran, Ben. "Machine (Technology) Ethics." International Journal of Technoethics 7, no. 2 (July 2016): 77–90. http://dx.doi.org/10.4018/ijt.2016070105.
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At the foundational level, for computer programmers, the code that programmers build and built into, are based on instructions, and the purpose of the program it later services. But computers do not have their own discretion beyond what humans incorporate into such systems and are essentially limited only to the extent its writer chooses. However, ABET to date, does not provide assurance or require accredited colleges and universities programs in applied science, computing, engineering, and engineering technology to take ethics courses or offer ethics courses nor train graduates in ethics. Yet, graduates, who then become practitioners, and ethical agents, are expected to be ethical agents. Hence, the purpose of this article is on machine ethics, specifically, on the theoretical and philosophical meaning of ethics—different types of ethics and utilitarianism. In addition to exploring the theoretical and philosophical paradigm of ethics, technology will be defined, in relations to machine ethics.
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Katagi, Sachin, and Dr Bhakti Gala. "Social Tags of Select Books Written by Mahatma Gandhi a Comparative Study of Library Thing Tags and OCLC Fast Subject Headings." DESIDOC Journal of Library & Information Technology 40, no. 01 (February 17, 2020): 382–87. http://dx.doi.org/10.14429/djlit.40.01.15138.
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Retrieval to specific information is critical to user satisfaction in today’s semantic web environment. Users use various terms, nomenclatures and words for aiding mnemonic value to identify concepts for future access and sharing with community members. Social tagging has emerged as a popular option for the millennials to address this issue Tagging is a convenient way used by today’s users for naming their web resources in their own terms. In this study a comparative study was carried out between the standardised Online Computer Library Centre (OCLC) Faceted Application of Subject Terminology (FAST) Subject headings and the popular user-generated tags observed on the LibraryThing website for select books written by Mahatma Gandhi, the iconic Father of Modern India, who was also a prolific writer. M K Gandhi wrote many books, letters, newsletters, essays and edited journals on various subjects like health, vegetarianism, diet, religion and social reforms. A close examination of the subject headings and tags given by users to works authored by M K Gandhi reveal that there is a vast amount of difference between the standard terms assigned using OCLC FAST Subject Headings and tags assigned by the users. The study reveals that neither subject headings nor tags are perfect systems by themselves, but they may complement each other in library catalogues. The inclusion of user-generated keywords into catalogues will greatly enhance representation, organisation and retrieval of resources in a library environment.
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Słodkowski, Marcin, Dominik Setniewski, Paweł Aszklar, and Joanna Porter-Sobieraj. "Modeling the Dynamics of Heavy-Ion Collisions with a Hydrodynamic Model Using a Graphics Processor." Symmetry 13, no. 3 (March 20, 2021): 507. http://dx.doi.org/10.3390/sym13030507.
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Dense bulk matter is formed during heavy-ion collision and expands towards a vacuum. It behaves as a perfect fluid, described by relativistic hydrodynamics. In order to study initial condition fluctuation and properties of jet propagation in dense hot matter, we assume a Cartesian laboratory frame with several million cells in a stencil with high-accuracy data volume grids. Employing numerical algorithms to solve hydrodynamic equations in such an assumption requires a lot of computing power. Hydrodynamic simulations of nucleus + nucleus interactions in the range of energies of the Large Hadron Collider (LHC) are carried out using our program, which uses Graphics Processing Units (GPUs) and Compute Unified Device Architecture (CUDA). In this work, we focused on transforming hydrodynamic quantities into kinetic descriptions. We implemented the hypersurface freeze-out conditions using marching cubes techniques. We developed freeze-out procedures to obtain the momentum distributions of particles on the hypersurface. The final particle distributions, elliptic flow, and higher harmonics are comparable to the experimental LHC data.
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Duan, Chun Guang, Shu Yi Pang, and Hsin Guan. "The Detection Methods of Non-Level Road Based on OPCODE." Advanced Materials Research 765-767 (September 2013): 2189–94. http://dx.doi.org/10.4028/www.scientific.net/amr.765-767.2189.
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The research of vehicle dynamics performance on the flat road has been more perfect at present. Around the world ,for lack of simulation environment, the analysis of vehicle driving and handling performance on non-level road is on an explorative stage. The paper established tire road detection model by using of open source code OPCODE. The ray given off from the wheel center intersects with the road model, and obtains the precise contact point and the road normal vector. Then wrote computer program based on the established detection model and embedded it into the complex vehicle model to simulate on longitudinal and lateral slope road. The simulation results show that: each detection time reach microsecond level and in the 1ms vehicle dynamics calculation step, road detection model meet the real-time simulation, and also the detection accuracy satisfy the requirements of the whole vehicle simulation.
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Mahmoud, Saida Saad Mohamed, Gennaro Esposito, Giuseppe Serra, and Federico Fogolari. "Generalized Born radii computation using linear models and neural networks." Bioinformatics 36, no. 6 (November 6, 2019): 1757–64. http://dx.doi.org/10.1093/bioinformatics/btz818.
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Abstract Motivation Implicit solvent models play an important role in describing the thermodynamics and the dynamics of biomolecular systems. Key to an efficient use of these models is the computation of generalized Born (GB) radii, which is accomplished by algorithms based on the electrostatics of inhomogeneous dielectric media. The speed and accuracy of such computations are still an issue especially for their intensive use in classical molecular dynamics. Here, we propose an alternative approach that encodes the physics of the phenomena and the chemical structure of the molecules in model parameters which are learned from examples. Results GB radii have been computed using (i) a linear model and (ii) a neural network. The input is the element, the histogram of counts of neighbouring atoms, divided by atom element, within 16 Å. Linear models are ca. 8 times faster than the most widely used reference method and the accuracy is higher with correlation coefficient with the inverse of ‘perfect’ GB radii of 0.94 versus 0.80 of the reference method. Neural networks further improve the accuracy of the predictions with correlation coefficient with ‘perfect’ GB radii of 0.97 and ca. 20% smaller root mean square error. Availability and implementation We provide a C program implementing the computation using the linear model, including the coefficients appropriate for the set of Bondi radii, as Supplementary Material. We also provide a Python implementation of the neural network model with parameter and example files in the Supplementary Material as well. Supplementary information Supplementary data are available at Bioinformatics online.
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Rezaei, Sohrab, and Nasim Kashanian. "A Stylometric Analysis of Iranian Poets." Theory and Practice in Language Studies 7, no. 1 (January 1, 2017): 55. http://dx.doi.org/10.17507/tpls.0701.07.
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This paper presents an investigation into the extent to which the lexical choices made by different poets are distinctive. When a writer, writes, s/he makes lexical choices that make them different from other writers and the writing to some extent can be considered as their fingerprint or in the other word their signature. Authorship analysis by means of textual measurements has been the interest of so many linguists. Authors have their own styles and the stylometrist is interested in finding units which can distinct authors from each other. Statistical analysis has provided different tools for this attempt, by different scholars. Over the past 3 centuries many types of textual tools has been introduced to discriminate different authors objectively that developing in computer programing has played the important role for using these models. In this study by writing a computer program, the styles of different Iranian poets, Attar and Molavi, and Nezami, are investigated in terms of their word length and word richness. Result shows differences between their styles in terms of these parameters. This way of analyzing writing of different authors has some implications in different field of sociolinguistic and TOEFL.
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Kohn, V. G., I. Snigireva, and A. Snigirev. "Propagation of an X-ray beam modified by a photonic crystal." Journal of Synchrotron Radiation 21, no. 4 (June 11, 2014): 729–35. http://dx.doi.org/10.1107/s160057751401056x.
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A method of calculating the transmission of hard X-ray radiation through a perfect and well oriented photonic crystal and the propagation of the X-ray beam modified by a photonic crystal in free space is developed. The method is based on the approximate solution of the paraxial equation at short distances, from which the recurrent formula for X-ray propagation at longer distances is derived. A computer program for numerical simulation of images of photonic crystals at distances just beyond the crystal up to several millimetres was created. Calculations were performed for Ni inverted photonic crystals with the [111] axis of the face-centred-cubic structure for distances up to 0.4 mm with a step size of 4 µm. Since the transverse periods of the X-ray wave modulation are of several hundred nanometres, the intensity distribution of such a wave is changed significantly over the distance of several micrometres. This effect is investigated for the first time.
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Werner, Liliana, and Manfred Tetz. "Edge Profiles of Currently Available Intraocular Lenses and Recent Improvements." European Ophthalmic Review 03, no. 02 (2009): 74. http://dx.doi.org/10.17925/eor.2009.03.02.74.
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We evaluated the microstructure of the edges of currently available foldable intraocular lenses (IOLs). The methodology used assisted an IOL manufacturer (Hoya, Japan) to optimise the edge profile of its lenses. Ten designs of hydrophobic acrylic, six designs of silicone and 24 designs of hydrophilic acrylic IOLs were imaged under scanning electron microscopy (SEM), and the photographs were imported to a digital computer program. The area above the posterior–lateral edge, representing the deviation from a perfect square, was measured in square microns. There was a large variation of the area values measured in currently available foldable IOLs labelled as square-edged lenses. As a group, the edges of hydrophilic acrylic lenses were less square than those of hydrophobic acrylic and silicone lenses. Hydrophobic acrylic AF-1 Hoya lenses had a high area value (329.7μ2). Through manufacturing changes, the edges of the lenses were then optimised to a value down to 39.1μ2, which represents the most square hydrophobic acrylic edge currently available.
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ŻAK, ANDRZEJ. "DISSECTIONS OF POLYGONS INTO CONVEX POLYGONS." International Journal of Computational Geometry & Applications 20, no. 02 (April 2010): 223–44. http://dx.doi.org/10.1142/s021819591000327x.
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In this paper we present purely combinatorial conditions that allow us to recognize the topological equivalence (or non-equivalence) of two given dissections. Using a computer program based on this result, we are able to generate a set which contains all topologically non-equivalent dissections of a p0-gon into convex pi-gons, i = 1…n, where n, p0,…,pn are integers such that n ≥ 2, pi ≥ 3. By analyzing generated structures, we are able to find all (up to similarity) dissections of a given type. Since the number of topologically non-equivalent dissections is huge even when the number of parts is small, it is necessary to find additional combinatorial conditions depending on the type of sought dissections, which will allow us to exclude the majority of generated structures. We present such conditions for some special dissections of a triangle into triangles. Finally we prove two new results concerning perfect dissections of a triangle into similar triangles.
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DIEDHIOU, Ibrahima, Salimata DIAGNE, Ndiaga THIAM, Coumba DIOP, Gabriel NDIAYE, Fambaye SOW, and Aissatou NDOYE. "Optimization of Sampling of Small Pelagic Fishes in the Exclusive Economic Zone of Senegal under the Climate Impact." Journal of Mathematics Research 10, no. 4 (June 28, 2018): 107. http://dx.doi.org/10.5539/jmr.v10n4p107.
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Senegal is in a very favourable geographical position for sea fishing. Its coast has an upwelling favouring a good development of phytoplankton very appreciated by the various fish families that populate its Exclusive Economic Zone (EEZ). The little pelagic fish make up the majority of landings. The dynamics of this family of resources is very complex while its perfect mastery is essential for a fishing well controlled maritime. The mathematical models that exist in the literature have not address the different issues related to maritime fisheries and climate change in the Senegalese fishing areas. The linear programming model in integer numbers has been developed after calculation of equilibrium biomass, catches at equilibrium catchability by the application of Schaefer and Freon models in the Senegalese Economic Exclusive Zone. Two proposals have been developed to better explain the tools used in the writing of the mathematical model. The simulation results were led to the design of a linear integer Program (PLNE). The objective is to maximize the biomass of this family of fish resources on the Petite C\^ote, Grande C\^ote and Cape Verde depending on samples and climate change. In the application of the model, real data made it possible to test the Linear program in integer numbers obtained. This optimization study allowed us to find an effective way to maximize recruitment within this resource family. This consists in setting up several less expensive marine refuges to build in the fishing zones targeted by the study. The simulation computer program of the model is presented in the appendix.
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Gu, Yebo, Bowen Huang, and Zhilu Wu. "Power Allocation for Secrecy-Capacity-Optimization-Artificial-Noise Secure MIMO Precoding Systems under Perfect and Imperfect Channel State Information." Applied Sciences 11, no. 10 (May 17, 2021): 4558. http://dx.doi.org/10.3390/app11104558.
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In this paper, we consider the physical layer security problem of the wireless communication system. For the multiple-input, multiple-output (MIMO) wireless communication system, secrecy capacity optimization artificial noise (SCO−AN) is introduced and studied. Unlike its traditional counterpart, SCO−AN is an artificial noise located in the range space of the channel state information space and thus results in a significant increase in the secrecy capacity. Due to the limitation of transmission power, making rational use of this power is crucial to effectively increase the secrecy capacity. Hence, in this paper, the objective function of transmission power allocation is constructed. We also consider the imperfect channel estimation in the power allocation problems. In traditional AN research conducted in the past, the expression of the imperfect channel estimation effect was left unknown. Still, the extent to which the channel estimation error impacts the accuracy of secrecy capacity computation is not negligible. We derive the expression of channel estimation error for least square (LS) and minimum mean squared error (MMSE) channel estimation. The objective function for transmission power allocation is non-convex. That is, the traditional gradient method cannot be used to solve this non-convex optimization problem of power allocation. An improved sequence quadratic program (ISQP) is therefore applied to solve this optimization problem. The numerical result shows that the ISQP is better than other algorithms, and the power allocation as derived from ISQP significantly increases secrecy capacity.
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Ghinea, Narcyz, and James M. van Gelder. "A probabilistic and interactive decision-analysis system for unruptured intracranial aneurysms." Neurosurgical Focus 17, no. 5 (November 2004): 1–8. http://dx.doi.org/10.3171/foc.2004.17.5.9.
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Object The goal in this study was to develop an interactive, probabilistic decision-analysis system for clinical use in the decision to treat or observe unruptured intracranial aneurysms. Further goals were to enable users of the system to adapt decision-analysis methods to individual patients and to provide a tool for interactive sensitivity analysis. Methods A computer program was designed to model the outcomes of treatment and observation of unruptured aneurysms. The user supplies probabilistic estimates of key parameters relating to a specific patient and nominates discount rate and quality of life adjustments. The program uses Monte Carlo discrete-event simulation methods to derive probability estimates of the outcomes of treatment and observation. Results are expressed as summary statistics and graphs. Discounted quality-adjusted life years are graphed using survival methods. Hierarchical simulations are used to enable investigators to perform probabilistic sensitivity analysis for one or multiple parameters simultaneously. The results of sensitivity analysis are expressed in graphs and as the expected value of perfect information. The system can be distributed and updated using the Internet. Conclusions Further research is required into the benefits of clinical application of this system. Further research is also required into the optimum level of complexity of the model, into the user interface, and into how clinicians and patients are likely to interpret results. The system is easily adaptable to a range of medical decision analyses.
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Islami, Faiz Risaludin, Kodrat Iman Satoto, and Rinta Kridalukmana. "Pengembangan Aplikasi Manajemen Pelatihan Laboratorium Software Engineering Di Fakultas Teknik Sistem Komputer." Jurnal Teknologi dan Sistem Komputer 4, no. 2 (April 23, 2016): 223. http://dx.doi.org/10.14710/jtsiskom.4.2.2016.223-231.
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System computer engineering of Diponegoro University has a software engineering laboratory fonctioned to provide the learning and training activities in order to give the opportunity for the students, to examine and to apply the theory or the research and the verification scientifical subject study or a part of certain subject study. The probleme emerge in this training is less the information about the training accepted by the society who willing to attend the training at the software engineering laboratory. In propose, to solve all the problemes appear, the writer make a Management Trainee Developement Application System of Software Engineering Laboratory at Faculty of System Computer Engineering gave a complete information about the training and the registration in software engineering laboratory. Management Trainee Application of Software Engineering Laboratory at Faculty of System Computer Engineering is an application based on website, made by using the program language PHP in scope Framework Code Igniter, and also MySQL for database. The developement methode used the waterfall methode, while designing the application used the UML modele. The result from this application is the realization an application based on website which is abble to manage the trainee data in software engineering laboratory, for example to manage the participant training data, the list of training data, the time schedule training data, admin data, the participant traininh data along the completed training History data.
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Cui, Shaohua, Hui Zhao, and Cuiping Zhang. "Locating Charging Stations of Various Sizes with Different Numbers of Chargers for Battery Electric Vehicles." Energies 11, no. 11 (November 7, 2018): 3056. http://dx.doi.org/10.3390/en11113056.
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Compared with traditional fuel vehicles, battery electric vehicles (BEVs) as a sustainable transportation form can reduce carbon dioxide emissions and save energy, so its market share has great potential. However, there are some problems, such as: Their limited range, long recharging time, and scarce charging facilities, hindering improvement in the market potential of BEVs. Therefore, perfect and efficient charging facility deployment for BEVs is very important. For this reason, the optimal locations for charging stations for BEVs are investigated in this paper. Instead of flow-based formulation, this paper is based on agents under strictly imposed link capacity constraints, where all agents can select their routes and decide on the battery recharging plan without running out of charge. In our study, not only the locations of charging stations, but also the size of charging stations with the different number of chargers, would be taken into consideration. Then, this problem is formulated as a location problem for BEV charging stations of multiple sizes based on agents under link capacity constraints. This problem is referred to as the agent-refueling, multiple-size location problem with capacitated network (ARMSLP-CN). We formulate the ARMSLP-CN as a 0–1 mixed-integer linear program (MILP) with the aim to minimize the total trip time for all agents, including four parts, namely, the travel time, queue time, fixed time for recharging, and variable recharging time depending on the type of charger and the amount of power recharged, in which commercial solvers can solve the linearized model directly. To demonstrate this model, two different numerical instances are designed, and sensitivity analyses are also presented.