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Journal articles on the topic 'UNIX FORTRAN (Computer program language)'

Author: Grafiati

Published: 27 July 2024

Last updated: 31 July 2025

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1

Raman, K. V. "Some Features of Java Language Illustrated through Examples from Chemistry." Mapana - Journal of Sciences 1, no. 2 (2003): 22–56. http://dx.doi.org/10.12723/mjs.2.5.

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Computer programming has been used effectively by theoretical chemists and organic chemists to solve various types of problem in chemistry. Initially the languages used for computations in chemistry were FORTRAN and BASIC. Later the Pascal language was used for solving problems in chemistry and physics. Recently the languages C and C++ and Java have been used to solve problems in chemistry. In this paper I will illustrate features of C, C++ choosing examples from chemistry. Computer programming has been used effectively by theoretical chemists and organic chemists to solve various types of pro

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Stringer, James C., L. Kent Thomas, and Ray G. Pierson. "Efficiency of D4 Gaussian Elimination on a Vector Computer." Society of Petroleum Engineers Journal 25, no. 01 (1985): 121–24. http://dx.doi.org/10.2118/11082-pa.

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Abstract The efficiency of D4 Gaussian elimination on a vector computer, the Cray- 1/S, it examined. The algorithm used in this work is employed routinely in Phillips Petroleum Co. reservoir simulation models. Comparisons of scalar Phillips Petroleum Co. reservoir simulation models. Comparisons of scalar and vector Cray-1/S times are given for various example cases including multiple unknowns per gridblock. Vectorization of the program on the Cray- 1/S is discussed. Introduction In reservoir simulation, the solution of large systems of linear equations accounts for a substantial percentage of

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Gabe, E. J., Y. Le Page, J. P. Charland, F. L. Lee, and P. S. White. "NRCVAX – an interactive program system for structure analysis." Journal of Applied Crystallography 22, no. 4 (1989): 384–87. http://dx.doi.org/10.1107/s0021889889003201.

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NRCVAX is a complete system of programs, covering all aspects of crystal structure analysis from data reduction to the presentation of results. The system, which is written in a `neutral' Fortran 77, presently exists in two forms. The first runs on a VAX computer under VMS, on an 80386 PC under UNIX and under IBM VM/CMS and MVS/TSO. The second is an adaptation which runs on PC-XT, AT, PS/2 and comparable microcomputers under MS-DOS. The two versions differ somewhat in structure, but very little in code, operation or functionality except for the graphics. The many options of the programs can be

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A. AbdulKareem, Mishaal. "Experimental Investigation and Mathematical Modelling of Pressure Response for Steam Generator." International Journal of Engineering & Technology 7, no. 4.19 (2018): 960. http://dx.doi.org/10.14419/ijet.v7i4.19.28077.

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Cold startup of boiler is the process of boiler operation with water at ambient temperature and pressure with all intake and discharge valves are fully closed to permit fast development of pressure. A mathematical model is developed to estimate the pressure response during cold startup of a perfectly insulated steam generator unit. A commercial type pressure switch is used in this unit to control and maintain the desired set point of the steam operating pressure. This mathematical model assume that the thermal properties of the supplied liquid water are temperature dependent. It is based on a

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Evripidou, Paraskevas, and Robert Barry. "Mapping Fortran Programs to Single Assignment Semantics for Efficient Parallelization." Parallel Processing Letters 08, no. 03 (1998): 407–18. http://dx.doi.org/10.1142/s0129626498000419.

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This paper presents Mustang, a system that automatically parallellizes Fortran programs by mapping them to single assignment semantics. Specifically, sequential Fortran source programs are translated into IF1, a machine-independent dataflow graph description language that is the intermediate form for the SISAL language. During this translation, Parfrase 2 is used to parse the source program perform dependency analysis and to detect opportunities for parallelization which are then explicitly introduced into the IF1 program. The resulting IF1 program is then processed by the Optimizing SISAL Com

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Amyot, Joseph R., and Gerard van Blokland. "Parameter optimization with ACSL models." SIMULATION 49, no. 5 (1987): 213–18. http://dx.doi.org/10.1177/003754978704900505.

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A method whereby a parameter optimization program, written in FORTRAN, can be used in conjunction with ACSL (Advanced Continuous Simulation Language) models of dynamic systems is described. The optimization of a projectile's trajectory is used as an example.

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COOK, G. O. "ALPAL, A PROGRAM TO GENERATE PHYSICS SIMULATION CODES FROM NATURAL DESCRIPTIONS." International Journal of Modern Physics C 01, no. 01 (1990): 1–51. http://dx.doi.org/10.1142/s0129183190000025.

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A Livermore Physics Applications Language (ALPAL), a new computer language, is described. ALPAL is a tool that generates a Fortran code module from a natural description of a physics model. This capability gives the computational physicist a significant productivity boost. While ALPAL is a working computer program, significant additions are being made to it. Some of the factors that make ALPAL an important tool are: first, it eliminates many sources of errors; second, it permits building program modules with far greater speed than is otherwise possible; third, it provides a means of specifying

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GENOT, MARC. "APPLICATIONS OF 1-D MAP FROM CHUA'S CIRCUIT: A PICTORIAL GUIDE." Journal of Circuits, Systems and Computers 03, no. 02 (1993): 375–409. http://dx.doi.org/10.1142/s0218126693000241.

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This paper is written as a tutorial on how to use a one-dimensional map derived from Chua's circuit to study the circuit's complicated dynamics. While the derivation of this 1-D map is nontrivial, a user-friendly program is presented to help the beginner uncover and witness, without any prior background on chaos, numerous periodic, homoclinic, heteroclinic and chaotic orbits. In keeping with the pedagogical nature of this paper, these bifurcation phenomena will be profusely illustrated with pictures generated from a computer program, along with the exact parameters so that the reader can easil

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Li, Hong Ru, Fei Feng, and Qing Wang. "Design and Application of Concrete Faced Rock-Fill Dam Numerical Simulation Analysis Program." Advanced Materials Research 594-597 (November 2012): 1882–87. http://dx.doi.org/10.4028/www.scientific.net/amr.594-597.1882.

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Reviewed the various constitutive mode of concrete faced rock-fill dam. Basis on the complex physical characteristic of filled the material and the framework of dam, a method of computer is given, introduced into the program of the concrete face rock-fill dam calculation with FORTRAN language on the ANSYS software. It is used to simulate two and three-dimensional nonlinear computation and compute figure simulation in the construction procedure and operation period for the concrete face rock fill dam, the result was intuitionist clarity.

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Halim, Abdul, and Hadi Kurniawanto. "IMPLEMENTASI SAMBA PADA LOCAL AREA NETWORK MENGGUNAKAN LINUX MANDRAKE 9.1." Jurnal Ilmiah Sistem Informasi 3, no. 1 (2023): 21–39. http://dx.doi.org/10.46306/sm.v3i1.34.

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Linux as a free, open (Open Source), and stable Operating System, has very high Internet and networking capabilities. This can be proven by the number of companies engaged in Internet services and e-commerce using Linux as the main Operating System on its Server, such as eToys.com, freshmeat.net, Mweb.co.id, Satunet Group, and others. All Linux software can be freely owned under the GNU General Public License. Based on the license, anyone can have a program in both source code (readable by humans) and binary (machine language), so that the program can be learned, changed, distributed, or furth

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Aini, S. S., Sahari B. Barkawi, Aidy Ali, et al. "Introducing Fatigue Contour Plot in LS-Pre Post LSDYNA Finite Element Crash Simulation Software." Applied Mechanics and Materials 165 (April 2012): 275–79. http://dx.doi.org/10.4028/www.scientific.net/amm.165.275.

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In this study, a computer program for calculating fatigue life of component is developed and introduced in LS-PrePost software. The program is written in Fortran programming language and the fatigue life equations used is taken from well-published literature. The materials covered are steel and aluminum. The developed program is able to read stress, strain and element values from d3plot and the keyword file. Having extracted the output from d3plot and keyword file, the fatigue life is then calculated and presented into a separate file called FATIGUE. The integration of output from FATIGUE will

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Galassi, Giuseppe, and Richard V. Mattessich. "Some Clarification to the Evolution of the Electronic Spreadsheet." Journal of Emerging Technologies in Accounting 11, no. 1 (2014): 99–104. http://dx.doi.org/10.2308/jeta-51114.

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ABSTRACT As early as 1961 Mattessich suggested (in an article in The Accounting Review) to use budget simulation in form of a computerized spreadsheet. This was followed up by him in a mathematical model, outlined in his book Accounting and Analytical Methods (Mattessich 1964a) with a corresponding computer program (in FORTRAN IV on mainframe computers), including illustrations in a companion volume (Simulation of the Firm through a Budget Computer Program, Mattessich 1964b). Five years later (in 1969) Rene Pardo and Remy Landau co-presented “LANPAR” (LANguage for Programming Arrays at Random)

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Farthing, I., G. Love, VD Scott, and CT Walker. "A new and versatile computer program for correcting EPMA data." Proceedings, annual meeting, Electron Microscopy Society of America 50, no. 2 (1992): 1658–59. http://dx.doi.org/10.1017/s0424820100132923.

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A new computer program has been developed to convert electron probe microanalysis data into accurate measurements of chemical composition. It is menu-based and designed to operate off-line using any IBM PC compatible computer. As shown in the flowchart, fig. 1, the architecture is modular and the programming language adopted is a compilable version of BASIC which possesses much of the processing speed associated with FORTRAN or C. Specimens containing up to fifteen elements, with 4 ≤ Z ≤ 96, can be handled and all the major x-ray lines (Kα, Kβ, Lα, L(β, Mα and Mβ) are available for analysis pu

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Tan, Hai Chao. "Nonlinear Analysis of Bearing Capacity of Reinforced Concrete Structures Using Strip Method." Applied Mechanics and Materials 470 (December 2013): 921–24. http://dx.doi.org/10.4028/www.scientific.net/amm.470.921.

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As the progress of theory and computer technology, nonlinear analysis is widely applied in civil engineering. Strip method, as one of the numerical methods, is used widely especially in the analysis of beams, columns and shell structures. The first half of this paper introduces the theoretical model and the basic assumptions of the strip method; the latter half of this paper compiles the strip method into computer program using FORTRAN language. At last, using beams with rectangular cross-section of reinforced concrete structures as an example, the paper analyze the factors, such as the streng

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Pan, D., and R. S. Sharp. "Automatic Formulation of Dynamic Equations of Motion of Robot Manipulators." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 202, no. 6 (1988): 397–404. http://dx.doi.org/10.1243/pime_proc_1988_202_141_02.

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Based on the use of homogeneous transformation matrices with Denavit-Hartenberg notation and the Lagrangian formulation method, a general computer program ROBDYN.RED for the symbolic derivation of dynamic equations of motion for robot manipulators has been developed and is discussed in this paper. The program is developed by using REDUCE, an algebraic manipulation language, and is versatile for open-chain structure robot manipulators with any number of degrees of freedom and with any combination of types of joint. Considerations are also given to saving computer memory space required for execu

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Mietielov, Volodymyr, Oleksiі Marusenko, and Oleksandr Baskakov. "DEVELOPMENT OF A TEXT EDITOR FOR UNIX OPERATING SYSTEM." Bulletin of the National Technical University «KhPI» Series: New solutions in modern technologies, no. 4(14) (December 28, 2022): 35–40. http://dx.doi.org/10.20998/2413-4295.2022.04.05.

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The task of developing and implementing a software application for creating, editing, displaying on the screen, as well as saving in the form of files of various formats, which in turn will be used in programming in languages such as C, C++, Python, and the Linux system language – Bash, is being considered. The developed software application is designed to enable the user to interact with files of various extensions, edit and save changes, work with the content of files for further development of software code in languages such as C, C++, Python. The software application can be used both as a

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Srivastava, A., and S. R. Palavali. "Integration of SPICE with TEK LV500 ASIC Design Verification System." VLSI Design 4, no. 1 (1996): 69–74. http://dx.doi.org/10.1155/1996/48310.

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The present work involves integration of the simulation stage of design of a VLSI circuit and its testing stage. The SPICE simulator, TEK LV500 ASIC Design Verification System, and TekWaves, a test program generator for LV500, were integrated. A software interface in ‘C’ language in UNIX ‘solaris 1.x’ environment has been developed between SPICE and the testing tools (TekWAVES and LV500). The function of the software interface developed is multifold. It takes input from either SPICE2G.6 or SPICE 3e.1. The output generated by the interface software can be given as an input to either TekWAVES or

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Felez, J., C. Vera, I. San Jose, and R. Cacho. "BONDYN: A Bond Graph Based Simulation Program for Multibody Systems." Journal of Dynamic Systems, Measurement, and Control 112, no. 4 (1990): 717–27. http://dx.doi.org/10.1115/1.2896200.

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This paper presents the BONDYN program (BONd graph DYNamics) as a procedure for simulating dynamic systems. It is based on bond graph theory and provides a means for treating dynamic systems that simultaneously include various physical domains. The program makes use of the bond graph module handling facility in order to build a general model starting from simple submodels. Although the latter can be defined by the user, a library has been appended to the preprocessor which includes some of these submodels. Special developments for simulating multibody systems can be found among them. Once the

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Hunt, John A. "Computer-aided parallel EELS techniques: acquisition, processing, & imaging." Proceedings, annual meeting, Electron Microscopy Society of America 47 (August 6, 1989): 398–99. http://dx.doi.org/10.1017/s0424820100153968.

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The recent commercial introduction of the parallel detection electron energy-loss spectrometer has undoubtedly made electron energy-loss spectroscopy (EELS) more viable as a technique for routine microanalysis. Additionally, the increased recording efficiency of parallel EELS (PEELS) warrants the use of more involved acquisition and processing techniques than was necessary, or even possible with serial EELS. This increased complexity places greater demands on the computer systems controlling data acquisition. Multichannel analyzers systems with small resources and limited programming facilitie

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Cheng, Hongmei, Ning Zhang, Yugui Yang, Weihong Peng, and Heng Chen. "A Study on the Mechanical Mechanism of Injection Heat to Increase Production of Gas in Low-Permeability Coal Seam." Energies 12, no. 12 (2019): 2332. http://dx.doi.org/10.3390/en12122332.

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This paper puts forward a new mathematical model, which is a coal damage-heat-fluid-solid multi-field coupling theory, in order to reveal the mechanical mechanism of the increase of coal-bed methane recovery through thermal stimulation, and to evaluate its effect. The strain field is introduced to define the damage of coal by considering of the effects of temperature, gas pressure, and mining stress of the coal seam. It is used to quantitatively describe the degree of coal rupture and damage. Additionally, the elastic and damage constitutive equation of coal and rock mass, the governing equati

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Khater, Hany, Talal Abu-El-Maty, and El-Din El-Morshdy. "Thermal-hydraulic modeling of reactivity accidents in MTR reactors." Nuclear Technology and Radiation Protection 21, no. 2 (2006): 21–32. http://dx.doi.org/10.2298/ntrp0602021k.

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This paper describes the development of a dynamic model for the thermal-hydraulic analysis of MTR research reactors during a reactivity insertion accident. The model is formulated for coupling reactor kinetics with feedback reactivity and reactor core thermal-hydraulics. To represent the reactor core, two types of channels are considered, average and hot channels. The developed computer program is compiled and executed on a personal computer, using the FORTRAN language. The model is validated by safety-related benchmark calculations for MTR-TYPE reactors of IAEA 10 MW generic reactor for both

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Коptovets, O., L. Shyrin, O. Yavorska, and A. Herasymenko. "Identification and study of the characteristics of friction oscillations in the brake." Collection of Research Papers of the National Mining University 73 (June 2023): 33–44. http://dx.doi.org/10.33271/crpnmu/73.033.

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Purpose.The task of researching modes of established frictional oscillations of the braking mechanism is to find a solution to the initial dynamic problem with friction that satisfies the periodicity conditions. At the same time, the period of motion of the dynamic system is not known in advance. This dynamic system is described by a non-linear dissipative non-autonomous system of differential equations. The methods. The developed technique of spectral analysis of the braking mechanism's oscillations is based on the assumption that its movements are periodic. If deterministic chaos occurs in t

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Cao, X., H. Miyashita, T. Kako, Z. Zhang, and B. Song. "Thermal Analysis of Expressway Considering Wind Effect." Applied Mechanics and Materials 419 (October 2013): 895–904. http://dx.doi.org/10.4028/www.scientific.net/amm.419.895.

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This paper reports a method of thermal analysis of expressway and the results of analysis of four expressways currently used in Japan. The authors built a mathematical model based on the principle of thermal conduction. For the boundary conditions in this mathematical model the influence of solar radiation, wind and air temperature etc. are taken into consideration. Explicit finite difference method is used in the analysis. The authors made an analysis program in Fortran language. Four main expressways distributing from the northern to the southern in Japan are chosen as the objects of this st

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Spoiala, Viorica, Helga Silaghi, and Dragos Spoiala. "Applied Mathematics in the Numerical Modelling of the Electromagnetic Field in Reference to Drying Dielectrics in the RF Field." Mathematics 12, no. 4 (2024): 526. http://dx.doi.org/10.3390/math12040526.

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The processing of dielectric materials in the radio frequency field continues to be a concern in engineering. This procedure involves a rigorous analysis of the electromagnetic field based on specific numerical methods. This paper presents an original method for analysing the process of drying wooden boards in a radio frequency (RF) installation. The electromagnetic field and thermal field are calculated using the finite element method (FEM). The load capacity of the installation is also calculated, since the material being heated in the radio frequency heating installations is placed in a cap

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Do, Binh Quang. "OPTIMIZATION OF FUEL RELOADING PATTERNS FOR A RESEARCH REACTOR BY SIMULATED ANNEALING." Science and Technology Development Journal 14, no. 1 (2011): 63–71. http://dx.doi.org/10.32508/stdj.v14i1.1885.

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This article presents results obtained from a research into an application of simulated annealing method to the in-core fuel reloading pattern optimization for a research reactor. The decision variable of the optimization problem is a fuel reloading pattern for the next cycle after the present cycle finishes. The objective function maximizes the effective multiplication factor keff at the beginning of cycle while it is established to include an important safety paramater – the power peaking factor, in search process. A procedure for searching the optimal solutions was formed and a computer cod

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Madlazim, M., and Bagus Jaya Santosa. "Computational physics Using Python: Implementing Maxwell Equation for Circle Polarization." Jurnal Penelitian Fisika dan Aplikasinya (JPFA) 1, no. 1 (2011): 1. http://dx.doi.org/10.26740/jpfa.v1n1.p1-7.

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Python is a relatively new computing language, created by Guido van Rossum [A.S. Tanenbaum, R. van Renesse, H. van Staveren, G.J. Sharp, S.J. Mullender, A.J. Jansen, G. van Rossum, Experiences with the Amoeba distributed operating system, Communications of the ACM 33 (1990) 46–63; also on-line at http://www.cs.vu.nl/pub/amoeba/, which is particularly suitable for teaching a course in computational physics. There are two questions to be considered: (i) For whom is the course intended? (ii) What are the criteria for a suitable language, and why choose Python? The criteria include the nature of t

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Njandjock, Nouck Philippe, Valentin Oyoa, Mbarga Théophile Ndougsa, and Dieudonné Bisso. "C++ Code for Separation of Regional and Residual Anomaly of Potential Field." Greener Journal of Physical Sciences 2, no. 4 (2012): 120–30. https://doi.org/10.5281/zenodo.3441014.

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In this work, a new informatics program in ‘C++’ language for the separation of the regional and the residual anomaly is presented. The proposed approach lies on the limits observed in the former code of the potential data processing by the least square method (POLYFIT in FORTRAN 77(Radhakrisna et al. 1990), GMSEP. PAS in PASCAL (Njandjock et al. 2003). In order to make, it has established an algorithm thanks to a mathematical analysis that takes into account all parameters that the least square method implies. The validation of this program has been enabled by the comparison of it

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Razouki, Sabah S., and Zena R. Al-Ani. "BENDING MOMENT INFLUENCE SURFACES FOR RECTANGULAR CONCRETE PLATES SIMPLY SUPPORTED AT THREE EDGES AND BUILT-IN AT THE FOURTH EDGE." Journal of Engineering 16, no. 02 (2010): 4795–821. http://dx.doi.org/10.31026/j.eng.2010.02.06.

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Presented in this paper is a series of bending moment influence surfaces for concrete rectangular plates simply supported at three edges and built-in at the fourth edge. The solutions are obtained analytically on the basis of thin plate's theory with small deflection using double Fourier series. The influence surfaces are presented for two observation points namely the center of the plate as well as the midpoint of the built-in edge. A computer program was written in FORTRAN language to generate the influence surfaces making use of the developed analytical solutions of this work. The validity

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Mahoney, William, and Adam Spanier. "Can You Give Me a Lift?" International Conference on Cyber Warfare and Security 19, no. 1 (2024): 149–55. http://dx.doi.org/10.34190/iccws.19.1.1968.

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Static Analysis (SA) is the practice of examining computer program source code for errors or vulnerabilities outside the compiler’s capabilities. To carry out Static Analysis on computer programs, various tools exist that parse and examine each line for known issues. These tools do not compile the program, nor do they run the program. Instead, they analyse the source code directly and infer properties about the program without executing it - thus “static” analysis. Static analysis is not new. Early UNIX contained a program called “lint” for static analysis; a tool that has now existed since th

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Ait Slimane, Baussad, Brahim Menacer, and Mostefa Bouchetara. "Analytical and Experimental Study of a Naturally Aspirated Indirect Injection 4-Stroke Spark Ignition Engine." Mechanics 25, no. 6 (2019): 442–48. http://dx.doi.org/10.5755/j01.mech.25.6.23277.

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One of the objectives of this study is to elaborate an engine cycle simulation program in FORTRAN language to analyze the influence of operating parameters on the performance (theeffective power, torque and specific fuel consumption) of a four-stroke gasoline engine (Ford ZSG 416 gasoline engine) for different engine operating parameters. The GT-Powerengine simulation software was used to compare the results obtained with the developed computer program and to improve it. In this program, a single-zone thermodynamicmodel was considered, which describes each phase of the engine cycle. In order t

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DAI, Zhongning, Chaigang Ren, and Fujia Yang. "Nuclear Microprobe and Micro-PIXE Analysis of Thick Target: Program and Its Applications." International Journal of PIXE 08, no. 01 (1998): 33–45. http://dx.doi.org/10.1142/s0129083598000054.

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PIXE (Particle Induced X-ray Emission), mainly Proton Induced X-ray Emission, has been developed into a well established technique for elemental analysis, especially for trace elemental analysis down to ppm or even ppb level. Nuclear Microprobe is a quickly developing technique around the world for 2 dimensional or even 3 dimensional element analysis if several nuclear analytical techniques, such as Rutherford backscattering spectrometry (RBS) can be available at the same time. The present resolution of NMP can be down to less than 1μm. To thick target analysis, i.e., the energy loss effect an

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Bentahar, Mohammed, and Habib Benzaama. "Numerical simulation of two-dimensional crack propagation using stretching finite element method by Abaqus." Tribology and Materials 1, no. 4 (2022): 145–49. http://dx.doi.org/10.46793/tribomat.2022.018.

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Fatigue is a phenomenon that appears in items subjected to cyclic loads. Thus, rupture and partial oxidation are initiated from the beginning of the process. For this, the study of such a problem of material in fracture mechanics is based on the numerical analysis of the characteristics of a crack. In this article, we propose a modelling of crack propagation by a new method of stretching the mesh by 2D finite element in mixed mode, based on the creation of the elements through a program in the computer language Fortran. The parametric mesh with 4 nodes (CPE4) was created to make the simulation

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Kobayashi, Kent D. "DEVELOPMENT AND IMPLEMENTATION OF SIMULATION MODELS." HortScience 25, no. 9 (1990): 1176e—1176. http://dx.doi.org/10.21273/hortsci.25.9.1176e.

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A simulation model consists of equations that represent the important relationships between components in a system, e.g., a plant or plant part. One of the purposes of simulation models is to simulate plant growth or plant growth processes to help further our understanding of plant growth and development. Simulation models are mechanistic or process based models that account for the physiological processes occurring in the system.Model development involves several steps. We define the problem and defuse the system, its entities, their attributes, and important relationships. A conceptual model

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Lukerman, Douglas de Almeida. "Numerical Simulation of Structural Carbon Steel, Stainless Steel, and Inconel Alloy 718 Using the Finite Element Method." International Journal of Advances in Engineering and Technology 17, no. 5 (2024): 513–27. https://doi.org/10.5281/zenodo.14172980.

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<em>The aim of this work is the numerical analysis of structural carbon steel solid elements, including medium-strength steel (MS250) and high-strength steel (HS350), as well as 304 stainless steel (SS) and Inconel 718 superalloy (SI). To this end, a mathematical formulation based on the Finite Element Method (FEM) was implemented using the FORTRAN programming language. The aim was to obtain the values of stresses, strains and nodal displacements of the steels and the alloy, assuming that the materials had linear elastic behavior. The von Mises rupture criterion method was used to analyze the

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V., V. Biliaieva, S. Kirichenko P., Y. Gunko E., O. Bondarenko I., B. Mashykhina P., and M. Yakubovska Z. "COMPUTER SIMULATION OF DEAD-END MINE WORKING VENTILATION." Science and Transport Progress. Bulletin of Dnipropetrovsk National University of Railway Transport, no. 5(83) (October 24, 2019): 26–35. https://doi.org/10.15802/stp2019/181499.

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<strong>Purpose.</strong> The important problem in the field of ecological safety and industrial safety is providing of normal microclimate in dead-end mine working. In these regions of the mine methane gas can be accumulated and as a result explosion may take place. So, to avoid these accidents it is important to ventilate appropriately dead-end mine working. The purpose of the work is development of quick computing mathematical model to obtain information about dead-end mine working ventilation process. <strong>Methodology. </strong>The process of dead-end mine working ventila

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Zhang, Guang Yun, Peng Lan, and Nian Li Lu. "Development of Parameterized Modeling for Tower Crane." Advanced Materials Research 505 (April 2012): 293–98. http://dx.doi.org/10.4028/www.scientific.net/amr.505.293.

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The development of parameterized modeling for ST8075 tower crane is based on finite element analysis software SAP84 and high-level programming language Fortran. According to the Saint-Venant principle, the special beam elements such as rotation joint and connection knots are specially reinforced if they don’t affect force analysis and deformation analysis of the whole structure. The tower crane is built into many small modules, which include balance arms, booms, tower body and so on. The developed program for the tower crane can realize the following functions: inputting the following paramete

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Abed, Basim Sh. "Finite Element Modeling Of Saint-Venant Equations For Shatt-Al Hilla." Journal of Techniques 2, no. 1 (2020): 22–29. http://dx.doi.org/10.51173/jt.v2i1.156.

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Shatt Al-Hilla was considered one of the important branches of Euphrates River that supplies irrigation water to millions of dunams of planted areas. It is important to control the velocity and water level along the river to maintain the required level for easily diverting water to the branches located along the river. So, in this research, a numerical model was developed to simulate the gradually varied unsteady flow in Shatt AL-Hilla. The present study aims to solve the continuity and momentum (Saint-Venant) equations numerically to predict the hydraulic characteristics in the river using Ga

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Hacıefendioğlu, Kemal, Gökhan Demir, and Ahmet Can Altunışık. "Blast-induced ground motion effect on dynamic response of a cylindrical vertical water tank with piled raft foundation." Challenge Journal of Structural Mechanics 6, no. 3 (2020): 120. http://dx.doi.org/10.20528/cjsmec.2020.03.003.

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This paper studies to estimate the dynamic behavior of a demineralized water tank with a piled raft foundation system considering soil-pile-structure-fluid interaction to shock-ground motion. A three-dimensional finite element model of a coupled system is constituted in ANSYS software. Interaction between pile and soil is represented with the frictional contact element. The frictionless contact elements are utilized to model between the water and tank shell to allow for displacement of the free surface adjacent to the tank wall. Shell elements are used for the tank body and its vault. The dyna

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Du, Jingjing, Yan Zhang, Zujiang Luo, and Chenghang Zhang. "Prediction of Ground Subsidence Induced by Groundwater Mining Using Three-Dimensional Variable-Parameter Fully Coupled Simulation." Water 16, no. 17 (2024): 2487. http://dx.doi.org/10.3390/w16172487.

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In order to predict the ground settlement in a scientific, intuitive, and simple way, based on the theory of Bio-consolidation, a three-dimensional fluid-solid coupled numerical calculation programme FGS-3D for ground settlement was compiled by using the Fortran 95 language, and a front-end operation platform was developed by using Microsoft VisualBasic, so that a three-dimensional variable-parameter fully coupled viscoelastic-plastic model of ground settlement was constructed using the city of Yancheng as an example, and the development of ground settlement and horizontal displacement changes

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Oliveira, Emerson D. "Daily INSOLation (DINSOL-v1.0): an intuitive tool for classrooms and specifying solar radiation boundary conditions." Geoscientific Model Development 16, no. 9 (2023): 2371–90. http://dx.doi.org/10.5194/gmd-16-2371-2023.

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Abstract. Climate modelling requires spending an extensive amount of time programming, which means reading, learning, testing, and evaluating source code. Fortunately, many climate models have been developed within the past decades, making it easier for climate studies to be conducted on a global scale. However, some climate models have millions of code lines, making the introduction of new parameterizations a laborious task that demands teamwork. While it is true that the high-complexity models perform realistic climate simulations, some researchers perform their studies using simplified clim

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Kendall, Christopher G. St C., Philip Moore, John Strobel, et al. "Simulation of the sedimentary fill of basins." Bulletin (Kansas Geological Survey), no. 233 (April 16, 2024): 9–30. https://doi.org/10.17161/kgsbulletin.no.233.20446.

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There are many forward models that simulate sedimentary processes. The significance and utility of any particular model is a matter of need, computer hardware, and programming resources. Some forward-model simulations are one-dimensional; they are used to define third-order sea-level curves to infer the origin of peritidal cyclic carbonates, model the interdependence of sea level, depth-dependent carbonate accumulation, and the flexural response of the earths crust, and handle diagenesis of carbonate in relation to the eustatic record. Other simulations are two-dimensional and may handle clast

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Abdul-Ameer, Maha R., and Mohammed M. Daway. "Pressure Changes in Pipe Transporting Mixture of Iraqi Crude Oils (Gathering System)." Journal of Petroleum Research and Studies 4, no. 3 (2013): 90–126. http://dx.doi.org/10.52716/jprs.v4i3.119.

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A study has been done to represent the pressure changes along gathering system in pipelines transporting Iraqi's crude oils; the study is divided into four parts. The first part represents the calculations of pressure drop in pipelines transporting petroleum fluid from the well head to a gathering point. In this part, there is a two-phase flow (gas and liquid). The calculations of pressure change in this part depends upon determination of some properties such as liquid and gas density, liquid and gas viscosity, liquid hold up and friction factor. Determining the liquid hold up and then p

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Yi, Nengjun, and Shizhong Xu. "Bayesian Mapping of Quantitative Trait Loci for Complex Binary Traits." Genetics 155, no. 3 (2000): 1391–403. http://dx.doi.org/10.1093/genetics/155.3.1391.

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AbstractA complex binary trait is a character that has a dichotomous expression but with a polygenic genetic background. Mapping quantitative trait loci (QTL) for such traits is difficult because of the discrete nature and the reduced variation in the phenotypic distribution. Bayesian statistics are proved to be a powerful tool for solving complicated genetic problems, such as multiple QTL with nonadditive effects, and have been successfully applied to QTL mapping for continuous traits. In this study, we show that Bayesian statistics are particularly useful for mapping QTL for complex binary t

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Bentahar, Mohammed, Moulai Arbi Youcef, Noureddine Mahmoudi, and Habib Benzaama. "2D numerical modeling of crack propagation using SFEMD method of a LEHI material." STUDIES IN ENGINEERING AND EXACT SCIENCES 5, no. 1 (2024): 3329–50. http://dx.doi.org/10.54021/seesv5n1-165.

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Numerical methods today play a useful and important role in solving various problems related to fracture mechanics including modeling crack propagation, fretting fatigue and cohesion... Furthermore, these methods have been widely used to solve problems in linear and nonlinear fracture mechanics in cases of elastic, plastic fracture problems. The evaluation of stress intensity factor in 2D and 3D geometries, thus these techniques widely used for non-standard crack configurations. The objective of this work is study the effects of the crack length and the number of structural elements on the two

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Lukianchenko, Olga, and Ivan Okhten. "COMPUTER SIMULATION IN THE PROBLEMS OF STABILITY OF THIN-WALLED RODS OF AN OPEN PROFILE WITH SHAPE IMPERFECTIONS." Management of Development of Complex Systems, no. 47 (September 27, 2021): 95–101. http://dx.doi.org/10.32347/2412-9933.2021.47.95-101.

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The presented numerical methodology is based on the finite element method (FEM) and computational procedures of the NASTRAN software package. It allows to investigate the influence of geometric imperfections in the shape of thin-walled rods of open profile on the critical values of the load, the shape of the stability loss and the stress-strain state. It has been developed an algorithm for computer modeling of initial imperfections in the shape of thin-walled rods, which is implemented in the NASTRAN software package using a neutral NASTRAN PC file and a specially developed program written in

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Kasim, Salim Y., and Saif M. Abdulsattar. "Theoretical Study of Suspension System for Two-Dimensional Model of the Vehicle and its Effects on limiting speed and Driver Comfort." Tikrit Journal of Engineering Sciences 23, no. 4 (2016): 93–102. http://dx.doi.org/10.25130/tjes.23.4.10.

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Vibration in cars is undesirable because it causes discomfort to passengers, and can also lead to fatigue and failure of some parts of the vehicle. Therefore, the study and analysis of comments movements cart embedded in ever to research vehicles since the invention. And associated vibration cart passenger comfort, safety and stability of the vehicle. The researchers analyzed several vibration of vehicles by looking at different models, such as quarter wagon model ,and Half Car Model and full vehicle model with different types of excitement experienced by the vehicle and intended here exciteme

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M., M. Biliaiev, V. Berlov O., A. Kozachyna V., V. Kalashnikov I., and V. Shevchenko O. "RISK ASSESSMENT OF THERMAL DAMAGE TO PEOPLE AT INDUSTRIAL SITES IN CASE OF EMERGENCY BURNING SOLID PROPELLANT." Science and Transport Progress. Bulletin of Dnipropetrovsk National University of Railway Transport, no. 1(85) (April 13, 2020): 7–16. https://doi.org/10.15802/stp2020/200752.

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<strong>Purpose.</strong> This work involves the development of a numerical model for the calculation of areas of thermal damage to people in the event of solid propellant burning at the industrial site. <strong>Methodology. </strong>An equation expressing the law of energy conservation was used to solve the problem of determining the areas of thermal shock of people at the industrial site. A potential flow model was used to calculate the airflow velocity field in the presence of buildings at the industrial site where an emergency occurs. The numerical solution of the two-dimens

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Mula, G., C. Angius, F. Casula, G. Maxia, M. Porcu, and Jinlong Yang. "The SEISM* Project: A Software Engineering Initiative for the Study of Materials." MRS Proceedings 408 (1995). http://dx.doi.org/10.1557/proc-408-3.

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AbstractStructured programming is no longer enough for dealing with the large software projects allowed by today's computer hardware. An object-oriented computational model has been developed in order to achieve reuse, rapid prototyping and easy maintenance in large scale materials science calculations. The exclusive use of an object-oriented language is not mandatory for implementing the model. On the contrary, embedding Fortran code in an object-oriented language can be a very efficient way of fulfilling these goals without sacrificing the huge installed base of Fortran programs. Reuse can b

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Çimen, Ömür, and Nilay Keskin. "Determining the Suction Capacity of Compacted Clays with Fuzzy-Set Theory." Bitlis Eren Üniversitesi Fen Bilimleri Dergisi, August 15, 2024. http://dx.doi.org/10.17798/bitlisfen.1506446.

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Water suction capacity is an important parameter affecting the swelling properties and volumetric change of soil. Determination of the water suction capacity is made by the experiments which are needed long time in laboratory. However, this has random errors due to the heterogeneous and anisotropic structure of soil sample together with the error caused by the operator made the experiment. Such an estimation problem, included the errors, may be easily solved with the fuzzy-set theory. In this study, the suction capacity of compacted clayey soils is predicted with the fuzzy-set theory. For this

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PETROSYAN, G. L., H. S. PETROSYAN, M. A. MARGARYAN, and A. A. BABAYAN. "COMPUTER MODELING OF THE DEFORMED STATE OF THE STEPPED SINTERED BAR EXTRUSION." Proceedings, 2022. http://dx.doi.org/10.53297/0002306x-2022.v75.1-5.

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The case of an unstable period at the initial stage of extrusion of a stepped sintered sample with a circular cross-section was simulated in the ABAQUS software environment. From the top of the cylindrical sample, uniform movement in the vertical direction is given, because of which it was deformed. Zones of von Mises stress, strain intensity, components of the deformation state and porosity of the material are obtained. The data were found for seven nodes at the entrance (е-е) and exit (д-д) from the matrix, as well as for six elements above and below them, which are presented in the form of

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