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Gotowa bibliografia na temat „FEM Code”

Autor: Grafiati

Data publikacji: 6 września 2023

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Artykuły w czasopismach na temat "FEM Code"

ASADA, Kazuo. "Impact Analysis for 2-Dimensional Elastic-Viscoplastic Solid. FDM Code and FEM Code." Transactions of the Japan Society of Mechanical Engineers Series A 58, nr 556 (1992): 2351–58. http://dx.doi.org/10.1299/kikaia.58.2351.

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Tsuji, Nobumasa, i Kazutaka Ohashi. "ICONE23-1203 Development of seismic analysis model for HTGR core on commercial FEM code". Proceedings of the International Conference on Nuclear Engineering (ICONE) 2015.23 (2015): _ICONE23–1—_ICONE23–1. http://dx.doi.org/10.1299/jsmeicone.2015.23._icone23-1_105.

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Xavier, César C., i Cláudio C. Motta. "The XMGUN Particle Path FEM Code". IEEE Transactions on Magnetics 46, nr 8 (sierpień 2010): 3281–84. http://dx.doi.org/10.1109/tmag.2010.2045226.

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Barour, Sabiha, Abdesselam Zergua, Farid Bouziadi, Mosbeh R. Kaloop i Waleed E. El-Demerdash. "Nonlinear Numerical and Analytical Assessment of the Shear Strength of RC and SFRC Beams Externally Strengthened with CFRP Sheets". Advances in Civil Engineering 2022 (11.05.2022): 1–17. http://dx.doi.org/10.1155/2022/8741158.

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This study investigates numerically utilizing nonlinear finite element (ANSYS software) and analytically the shear response of the Reinforced Concrete (RC) beams. Different beams are considered in the current study, such as RC, steel fibre reinforced concrete (SFRC) without web reinforcement, and RC externally reinforced in the shear zone with carbon fibre reinforced polymer (CFRP) sheets. Nonlinear finite element model (FEM) is designed to simulate the performance of the designed beams. The results of FEM are compared to experimental measurements and standard design codes (ACI 440.2R-17, FIB 14, CNR-DT200, and ACI 318-19). According to the experimental approach and nonlinear finite element, the enhancement in the load carrying capacity of SFRC beam due to CFRP strengthening decreases with a volume fraction of steel fibres of 2%. However, the effect of CFRP strengthening on the shear behaviour of RC beams was observed in increased load carrying and ultimate deflection capacities as a result of the CFRP strengthening. The results show that CFRP has a significant contribution to shear strength. At each load increment, the created model accurately reproduced the initial and progressive crack patterns. A comparison of nonlinear finite element and analytical models was conducted using the codes ACI 440.2R-17, FIB 14, CNR-DT200, and ACI 318-19. Numerically, the FEM results showed a high agreement with ACI 440.2R-17 standard code, with correlation approach to 99%. The comparison experimental load capacity of beams to FEM and ACI 440.2R-17 shows that the FEM can be significantly used to estimate the shear strength of beams in the X-Y directions with simulating different scenarios of CFRP and SFRC characteristics. The discrepancy between the nonlinear FEA and the theoretical predictions from the ACI 440.2R-17 code is less than 1%, from the FIB14 code is less than 2%, from the CNR-DT200 code is less than 15%, and from the ACI 318-19 code is less than 30%. The ultimate load capacity evaluated based on ACI 440.2R-17 code provision shows a good agreement with the experimental data as compared to the others’ code provision. The results of the finite element analysis and analytical models were in good agreement with the experimental results. The most significant advantage of finite element analysis over experimental approaches was that it can aid in the investigation of different output results that cannot be measured experimentally, such as shear stress in the XY direction throughout the beam strengthened in shear with different CFRP properties and steel fibre reinforced concrete (SFRC).

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Ceretti, E., C. Lazzaroni, L. Menegardo i T. Altan. "Turning simulations using a three-dimensional FEM code". Journal of Materials Processing Technology 98, nr 1 (styczeń 2000): 99–103. http://dx.doi.org/10.1016/s0924-0136(99)00310-6.

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Pugacheva, G. I., A. A. Gusev, U. B. Jayanthi, I. M. Martin i W. N. Spjeldvik. "FEM code simulation of the magnetospheric proton fluxes". Advances in Space Research 28, nr 12 (styczeń 2001): 1759–62. http://dx.doi.org/10.1016/s0273-1177(01)00543-9.

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Slota, Ján, Miroslav Jurčišin i Emil Spišák. "Experimental and Numerical Analysis of Local Mechanical Properties of Drawn Part". Key Engineering Materials 586 (wrzesień 2013): 245–48. http://dx.doi.org/10.4028/www.scientific.net/kem.586.245.

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In this study, numerical and experimental results of deep drawing process were compared. Drawn part, used in automotive industry was drawn and measured using ARGUS measurement system, which works on a digital image correlation method (DIC). In order to optimize and verify accuracy of a numerical simulation results, this process was modeled in two codes which work on principle of the finite element method (FEM). Two types of FEM codes were used. Code which works on base of both, implicit and explicit time integration scheme, were used for calculation. Results were compared and discussed.

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Onishi, Yuki. "A Concept of Cell-Based Smoothed Finite Element Method Using 10-Node Tetrahedral Elements (CS-FEM-T10) for Large Deformation Problems of Nearly Incompressible Solids". International Journal of Computational Methods 17, nr 02 (24.10.2019): 1845009. http://dx.doi.org/10.1142/s0219876218450093.

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A new concept of smoothed finite element method (S-FEM) using 10-node tetrahedral (T10) elements, CS-FEM-T10, is proposed. CS-FEM-T10 is a kind of cell-based S-FEM (CS-FEM) and thus it smooths the strain only within each T10 element. Unlike the other types of S-FEMs [node-based S-FEM (NS-FEM), edge-based S-FEM (ES-FEM), and face-based S-FEM (FS-FEM)], CS-FEM can be implemented in general finite element (FE) codes as a piece of the element library. Therefore, CS-FEM-T10 is also compatible with general FE codes as a T10 element. A concrete example of CS-FEM-T10 named SelectiveCS-FEM-T10 is introduced for large deformation problems of nearly incompressible solids. SelectiveCS-FEM-T10 subdivides each T10 element into 12 four-node tetrahedral (T4) subelements with an additional dummy node at the element center. Two types of strain smoothing are conducted for the deviatoric and hydrostatic stress evaluations and the selective reduced integration (SRI) technique is utilized for the stress integration. As a result, SelectiveCS-FEM-T10 avoids the shear/volumetric locking, pressure checkerboarding, and reaction force oscillation in nearly incompressible solids. In addition, SelectiveCS-FEM-T10 has a relatively long-lasting property in large deformation problems. A few examples of large deformation analyses of a hyperelastic material confirm the good accuracy and robustness of SelectiveCS-FEM-T10. Moreover, an implementation of SelectiveCS-FEM-T10 in the FE code ABAQUS as a user-defined element (UEL) is conducted and its capability is discussed.

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Mankovits, T., I. Kocsis, T. Portik, T. Szabó i I. Páczelt. "Shape design of rubber part using FEM". International Review of Applied Sciences and Engineering 4, nr 1 (1.06.2013): 85–94. http://dx.doi.org/10.1556/irase.4.2013.1.12.

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Abstract This paper presents a novel solution for shape optimization of compressed rubber parts. The procedure is based on the finite element method (FEM). A special purpose FEM code written in FORTRAN has been developed for the analysis of nearly incompressible axi-symmetric rubber parts. Numerical stability of the code and sensitivity analysis of the FEM input parameters are investigated. The aim of the parameter optimization is to reduce the time consuming FEM computations for the optimization process. The objective of the optimization is to find the optimal shape of the investigated rubber parts with a specified load-displacement curve. A regression model is used to determine the connection between the input and output data calculated by the FEM.

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Tokuda, N., T. Sakurai i T. Teraoku. "Sloshing Analysis Method Using Existing FEM Structural Analysis Code". Journal of Pressure Vessel Technology 117, nr 3 (1.08.1995): 268–72. http://dx.doi.org/10.1115/1.2842122.

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A fluid analysis method using an analogy relating the pressure wave equation of fluid to elasticity equations is applied to sloshing analysis, where existing FEM structural analysis codes are available. It is seen from theoretical consideration that the present method is equivalent to the classical FEM formulation of linear sloshing analysis. The numerical analyses of liquid sloshing in a rigid cubic tank and of vibration of tubulous fluid under gravitational force are performed by using the present method. The results are shown to be in excellent agreement with the theoretical values.

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Rozprawy doktorskie na temat "FEM Code"

Sherif, Feysel Nesru. "MATLAB FEM Code - From Elasticity to Plasticity". Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for bygg, anlegg og transport, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-18638.

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A MATLAB Finite Element code for plane strain analysis of footings on an Elasto-plastic material using the Mohr Coulomb failure criteria has been developed. The first step is to develop codes for mesh generation and Gaussian numerical integration. Next, the force matrix, the stiffness matrix and the self weight matrix are assembled. After that functions for non linear analysis such as the plastic potential derivatives are formed. Finally plots of the mesh, displacement shadings, stress shadings and stress-strain curves are developed. For the purpose of verification results from the code for biaxial test are compared with the theoretical solution. Additionally comparison is made between the code and prandtl’s bearing capacity solutions for a footing problem. These results show that accuracy depends on two factors: - the type of the element and the number of elements used. The three node triangular element and the four node rectangular element give less accurate results when compared to higher order element types. And for a relatively accurate result the number of elements should be too high.

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Clarke, Samuel R. (Samuel Robert). "Development of a FEM waveguide code, incorporating Fast Frequency Techniques, for numerical synthesis". Thesis, Stellenbosch : Stellenbosch University, 2002. http://hdl.handle.net/10019.1/52762.

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Thesis (MScEng)--University of Stellenbosch, 2002.
ENGLISH ABSTRACT: A computational tool for numerical synthesis via optimization is developed. Only two port waveguide devices are considered. The Finite Element Method (FEM) is used for the electromagnetic analysis. Specifically, the frequency domain electric field FEM is used with vector curl-conforming constant tangential/linear normal brick-shaped elements. Special boundary conditions are used at the ports. These boundary conditions only consider dominant mode propagation. The issues surrounding the implementation of this formulation are discussed. The results generated using this code compare favorably to examples from independent sources. A parametric mesher that is used in conjunction with the FEM is developed. This is done to eliminate the need for human intervention during each iteration of the synthesis procedure. Fast Frequency (FF) techniques are presented to reduce the computational requirements of the synthesis. FF techniques reduce the cost of calculating many frequency samples in a specified band and do not reduce the computational requirements of computing a FEM solution at a single frequency. The FF techniques presented are: Asymptotic Waveform Evaluation (AWE), Model Based Asymptotic Waveform Evaluation (MB-AWE) and Model Based Parameter Estimation (MBPE) . The results obtained using these techniques are compared and the most suitable technique for the synthesizer is selected. MBPE is selected as the most suitable technique for this application. An adaptive sampling algorithm for Model Based Parameter Estimation is presented. The algorithm relies on the difference between multiple models generated from the same samples to determine the sample locations. The use of this algorithm enables a model of a narrow band filter at X-band to be determined using only fourteen FEM solutions. The difference between the model- and the FEM solutions is less then -lOOdBacross the band. A sample synthesis using generalized simulated annealing is presented. A single pole filter in X-band waveguide is successfully synthesized to illustrate the usefulness of the code. The use of FF techniques results in a computational cost saving of a factor of forty times.
AFRIKAANSE OPSOMMING: 'n Rekenaar werktuig vir numeriese sintese deur middel van optimering word ontwikkel. Slegs twee-poort golfleierkomponente word beskou. Die Eindige Element-metode (EEM) word vir die elektromagnetiese analise gebruik. Meer spesifiek, die frekwensiegebied, elektriese-veld EE-formuleering word gebruik, met eurl-ondersteunende, konstant-tagensiaaljlineêr-normaal, baksteenvormige vektorelemente. Spesiale grensvoorwaardes word by die poorte gebruik. Hierdie grensvoorwaardes neem slegs voortplanting van die dominante modus in ag. Die kwessies rondom die implementering van hierdie EEM word bespreek. Resultate wat met hierdie kode verkry word, vergelyk goed met dié vanuit onafhanklike bronne. 'n Parametriese diskretisasie prosedure in ontwikkel, vir gebruik saam met die genoemde EEM, met die doelom menslike interaksie uit die weg te ruim, tydens die sintese proses. Vinnige Frekwensie (VF) tegnieke word beskryf, met die doelom die berekeningskoste van die sintese te verminder. VF tegnieke verminder die berekeningskoste verbonde aan 'n reeks EEM oplosings binne 'n gegewe frekwensieband, maar verminder nie die koste verbonde aan 'n enkel-frekwensie EEM oplossing nie. Die VF tegnieke wat beskryf word, is die volgende: Asimptotiese Golfvorm Evaluasie (AGE), Model Gebaseerder Asimptotiese Golfvormevaluasie (MGAGE) en Model- Gebaseerde Parameterekstraksie (MGPE). Die resultate wat met hierdie metodes verkry word, word vergelyk om sodoende die mees toepaslike VF tegniek te kies. MGPE word gekies as die mees toepaslike tegniek. 'n Aanpasbase monsteringsalgoritme vir MGPE word beskryf. Die algoritme berus op die verskil tussen twee modelle wat vanaf dieselfde stel punte geskep word, om monsterfrekwensiewaardes te bepaal. Die gebruik van hierdie algoritme lei tot 'n model van 'n nou-, X-band filter, vanuit slegs veertien EEM oplossings. Die verskil tussen hierdie model en enige EEM oplossings binne die band, is kleiner as -lOOdB. 'n Voorbeeld sintese, wat gebruik maak van veralgemeende, gesimuleerde versmelting, word beskryf. 'n Enkel-pool filter by X-band word suksesvol gesintetiseer om die bruikbaarheid van die kode te illustreer. 'n Faktor veertig vermindering III berekeningskostes word behaal deur gebruik te maak van VF tegnieke.

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Gross, Jeffrey C. "Evaluation of FEM codes ALPID & NIKE and enhancement of selected code to optimize simulation of ring - Joining process". Ohio : Ohio University, 1990. http://www.ohiolink.edu/etd/view.cgi?ohiou1183491802.

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Davidsson, Marcus, Camilla Johansson i Johanna Nilsson. "Hur hanterar företagen kravet på revisionsutskott? : - En studie av fem svenska börsföretag". Thesis, Växjö University, School of Management and Economics, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:vxu:diva-5619.

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Författare: Marcus Davidsson, Camilla Johansson och Johanna Nilsson

Handledare: Ola Nilsson

Titel: Hur hanterar företagen kravet på revisionsutskott? – en studie av fem svenska börsföretag

Bakgrund: Under sommaren 2008 blev Svensk kod för bolagsstyrning obligatorisk för samtliga svenska företag som är noterade på den svenska börsen. Svensk kod för bolagsstyrning stadgar bland annat att företagens styrelser skall inrätta ett revisionsutskott. Företagen kan dock välja att inte inrätta ett revisionsutskott och då förklara varför, enligt principen ”följ eller förklara”.

Syfte: Syftet med studien är att öka kunskapen kring hur företag hanterar Svensk kod för bolagsstyrnings krav kring revisionsutskott samt vilken nytta revisionsutskottet upplevs tillföra i styrelsearbetet.

Metod: En kvalitativ intervjustudie har genomförts. Studien omfattade fem styrelseledamöter från fem börsnoterade företag på OMX Nordic Exchange Stockholm.

Slutsats: Studien visar att fyra av de fem företagen som ingått i studien har valt att inrätta revisionsutskott. Majoriteten av dessa har inrättat revisionsutskotten som ett resultat av strävan att följa Svensk kod för bolagsstyrning. Vidare har studien visat att styrelserna har satt samman revisionsutskott på olika sätt, både vad gäller ekonomisk kompetens och oberoende. Merparten av företagen i studien ställer höga krav på vad revisionsutskotten skall utföra för uppgifter och upplever att utskotten tillför nytta i styrelsearbetet.

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Ciomber, Isabelle, i Roland Jakel. "Systematic Analysis and Comparison of Stress Minimizing Notch Shapes : Obtaining a stress concentration factor of Kt=1 without FEM-Code". Universitätsbibliothek Chemnitz, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-141533.

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Als Stand der Technik sind einfache, kreisförmige Verrundungen zur Reduktion von Kerbspannungen an Querschnittsübergängen bekannt, für die aus Tabellenwerken / Diagrammen in der Literatur die Formzahl einfach abgelesen werden kann. Die Effizienz der Spannungsreduktion solcher Lösungen ist jedoch sehr begrenzt. Ziel der Arbeit ist es daher, dem Konstrukteur bzw. Berechnungsingenieur ein Verfahren in die Hand zu geben, mit dem er für Standardquerschnittsübergänge und Standardlastfälle "Nicht-Kreiskerben" ohne teure und zeitaufwendige FEM-Analyse einfach durch Nutzung geeigneter Formzahldiagramme auslegen kann. Dabei sind sogar Formzahlen von nahezu eins möglich, d.h., in der "Kerbe" bleibt praktisch nur noch die Nennspannung übrig. Die Präsentation ist zweitgeteilt: Im ersten Teil werden die Arbeitsmethoden bzw. Softwarefunktionen und verwendeten Softwarewerkzeuge vorgestellt: Dies sind die Programme Creo Parametric als vollparametrisches CAD-Werkzeug und Creo Simulate als p-FEM-Programm der Parametric Technology Coprporation (PTC). Der zweite Teil der Präsentation beschreibt den Gültigkeitsbereich sowie die untersuchten Kerbgeometrien: Die einfache kreisförmige Verrundung als Stand der Technik, die Zwei-Radien-Kerbe, die Baud-Kurve, die Methode der Zugdreiecke nach Claus Mattheck, die elliptische Kerbe sowie die konische Rundung als generalisierte elliptische Kerbe. Es wird kurz eine Bibliothek vorgestellt, mit der solche Kerben einfach ausgelegt werden können, d.h. Ihre exakte Geometrie festgelegt sowie die zugehörige Formzahl αk bestimmt werden kann
Circular (one-radius) fillets are known as state-of-the-art for reducing notch stresses at cross section transitions. The stress concentration factor Kt of such geometries can be read out from diagrams/tables given in the literature. However, the efficiency of stress reduction of circular notches is very limited. The goal of the work therefor is to present a method for the designer/analyst how to design non-circular notches/fillets just by using suitable Kt-diagrams without time-consuming and expensive FEM analyses. Kt-numbers of nearly one are possible, that means in the "notch" just the nominal stress appears and no stress concentration takes place. The presentation has two parts: Part one describes the working methods and software functions as well as software tools: Creo Parametric as fully-parametric CAD program and Creo Simulate as embedded p-FEM-tool from Parametric Technology Corporation (PTC) have been used. The second part describes the range of validity and the examined notch geometries: The one-radius fillet as state-of-the-art, the two-radii filet, the Baud-curve, the method of tensile triangles from Claus Mattheck, the standard elliptical fillet and the conical round as generalized elliptical fillet. A notch layout library is shortly presented that allows to design such fillets, that means exactly determine the notch geometry and the related stress concentration factor Kt

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INOUE, NELSON. "IMPLEMENTATION OF A COMPUTER CODE CONSIDERING THE COUPLING OF THE FINITE ELEMENT METHOD (FEM) AND THE BOUNDARY ELEMENT METHOD (BEM)". PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1998. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=1522@1.

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CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO
O presente trabalho tem como principais objetivos estudar a formulação do método dos elementos de contorno e implementar um programa computacional para análise de tensões de problemas bi-dimensionais (estado plano de deformação e axissimetria) considerando também a possibilidade de acoplamento dos métodos dos elementos de contorno (MEC) e dos elementos finitos (MEF). Dentro deste estudo são abordados as soluções fundamentais para materiais linearmente elásticos, a formulação das integrais no contorno, as técnicas para tratamento de singularidade, a utilização de nós duplos para estudos de canto, etc. Os resultados numéricos obtidos em alguns problemas bi-dimensionais pelos métodos dos elementos de contorno e dos elementos finitos, considerando isoladamente ou acoplados, são comparados mutuamente e com soluções analíticas da teoria da elasticidade linear. Vantagens e desvantagens destes métodos, bem como dificuldades de implementação numérica, são discutidas ao longo deste trabalho.
The main objectives of this work are the study of the boundary element formulation as well as the implementation of computer program for stress analyses of bidimensional problems under axisymmetric or plane strain conditions. The computer program also combines the boundary element method (BEM) with the finite element method (FEM) thus permitting its application to wide range of geotechnical problems. In this study research several mathematical aspects of the boundary element method are reviewed, such as the fundamental solutions for elastic materials, contour integration, singularities, corner problems, etc. The numeric results obtained in some 2D problems the BEM and FEM, in a coupled or isolated form, are compared with analytical solutions provided by classical theory of elasticity. Advantages and shortcomings of both methods, as well as the difficulties in the computer implementation, are also discussed in this work.

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Karlsson, Lisa (Lisbeth). "Jag måste tänka på ett annat sätt... : Fem folkhögskolestuderande med annat modersmål och deras upplevelser av att lära matematik på svenska". Thesis, Karlstads universitet, Institutionen för pedagogiska studier, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-28006.

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The purpose of the present study is to describe adult second language learners’ experiences of mathematics learning from a past and contemporary perspective. What experiences in mathematics do they bring? What does it mean to learn Mathematics through their new language? The study is based on life-world narratives from five second language students with another native language than Swedish. Today they all study at a Swedish folk high school, at upper secondary level and they have previously studied at this level in Mathematics. The result shows that the meeting with the Swedish school and folk high school context is confusing. They face a new school culture with quite different normative rules and it is unclear to them how to behave as good students in this context. They are positive about the response from teachers which is much unlike their previously experiences. The teachers are competent tutors, supportive, listening, encouraging, friendly, authorities without being iron handed. The multilingual students in this study describe that the new language is of secondary importance in mathematics learning. Everyone starts off in year one at upper secondary level and sees mathematics the first period as a refresher. Mathematic studies are, during this period, used to consolidate the mathematical concepts in the new language. All change automatically to their native or previous school language when working with mathematical tasks. There are basic mathematical concepts learned and automated, it is too cognitively demanding to use the Swedish language. They are critical of how Mathematics is taught, a lot of individual work and pace and says that briefings and discussions are more effective, a teacher led approach that they are familiar with.

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Olsson, Lovisa. "Fler barn med på läs- och skrivtåget : En kvalitativ studie som belyser fem lärares erfarenheter och upplevelser av Arne Tragetons läs- och skrivmetod "Att skriva sig till läsning"". Thesis, Södertörns högskola, Lärarutbildningen, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-27581.

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The purpose of this study is to investigate the teachers’ described experiences of advantages as well as disadvantages of Arne Trageton’s write to read-method (“ASL”) in contrast to the code-oriented traditional way of teaching. The aim of this study is furthermore to depict the teachers’ opinions on whether they experience that the ASL-method is unfavourable for students in general. This study will also investigate the teachers’ standpoint regarding choice of reading and writing method. The following questions form the basis of this study: Which advantages or disadvantages do the teachers experience with the ASL-method relative to using the code-oriented traditional way of teaching? Do the teachers experience that the ASL-method is unfavourable for some students? Do the teachers only use the ASL-method or do they combine many different reading and writing methods in their teaching? How do the teachers explain their decision in that matter? This study is based on a qualitative method and interviews were performed to acquire knowledge of the teachers’ experiences. The major theoretical approaches of this study are Arne Trageton’s, the founder of the ASL-method, theories concerning the ASL-method and the socio-cultural perspective on learning. The result of the study demonstrates that the ASL-method is described as advantageous because the students’ interests, creativity, motivation and self-confidence increased when using the ASL-method, in contrast to using the traditional way of teaching. The ASL-method was also described as easier to individualize in comparison with the traditional letter-based teaching. The disadvantage with the ASL-method, in contrast to using the traditional teaching, was mainly the fact that the computers and tablets sometimes did not work properly. Overall the ASL-method was described as a good method because all students could participate in the teaching despite their capacity. Speech technology and word editing programs on the tablets were described as descent support for students with slower motor development, difficulties in reading or writing and second language students. Even though the ASL-method was considered a superior method, the method was not described to be sufficient by itself.

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Staboli, Chiara. "Interpretazione analitica e simulazione numerica di una prova di carico su un palo di fondazione". Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019.

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La presente tesi si inserisce nell’ambito di un programma di ricerca e sviluppo riguardante l’impiego della piattaforma CAE Salome Meca (Code Aster) nel campo della modellazione geotecnica. L’oggetto alla base del lavoro è stato quello di costruire un modello agli elementi finiti con tale programma di calcolo, capace di analizzare la risposta carico-cedimento di un palo, fino a rottura. Tale lavoro è stato svolto con riferimento a un caso studio reale di una fondazione su pali di una civile abitazione costruita nel comune di Bologna. In questo contesto il primo tema su cui ci è concentrati è stata l’imposizione delle condizioni iniziali. Questo aspetto assume rilevanza soprattutto nel caso di pali trivellati come quelli del caso studio, che in fase di costruzione portano un disturbo nel terreno circostante e una riduzione dello stato tensionale. Il rimaneggiamento nell’intorno del palo impone la scelta di un idoneo elemento di interfaccia palo-terreno, ai fini di una corretta modellazione del problema. In questa tesi si sono in particolare costruiti modelli con elementi thin layer e con due tipi di elementi giunto forniti da Code Aster (JOINT_MECA_RUPT e JOINT_MECA_FROT). L’ultimo aspetto che influisce sui risultati del modello è il legame costitutivo usato per descrivere il comportamento del terreno. Nello studio proposto, si è scelto di lavorare sia alle tensioni totali con un legame alla Tresca, sia alle tensioni efficaci con un legame alla Mohr Coulomb. Individuato il modello che meglio descrive il caso studio è quindi stato calcolato il carico di rottura del palo. La parte restante della tesi vede infine un confronto di questo carico ultimo con quello derivato dalle prove di carico a disposizione (metodo di Chin) e dalle formule statiche. Si è infine concluso con un confronto dei risultati sulla base delle norme tecniche vigenti NTC18.

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Chrást, Ondřej. "Pevnostní výpočet výměníku tepla". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-230747.

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The main content of the diploma thesis is the strength calculation of the heat exchanger according to ASME Code. The introduction is a summary of issues within the design of this equipments. In the practical part there are a strength calculation of the main parts of heat exchanger and the FEM analys with their evaluation. In the last part there is the calculation of cumulative damage.

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Książki na temat "FEM Code"

(Firm), Medicode, red. Fee & coding standard. Salt Lake City, Utah: MEDICODE, 1996.

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Royal Institute of British Architects. RIBA code of procedure for fee tendering. London: RIBA Publications, 1991.

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Canada. Bibliothèque du Parlement. Service de recherche. Contrôle des armes à feu: Projet de loi C-80 et mesures connexes. Ottawa, Ont: Bibliothèque du Parlement, Service de recherche, 1990.

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Canada. Secteur des politiques pénales et sociales. Armes à feu et armes offensives en vertu du Code criminel: Partie III. Ottawa, Ont: Ministère de la justice, Secteur des politiques pénales et sociales, 1992.

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The sayings of Han Fei Zi: The severe code of the legalist. Singapore: Asiapac, 1991.

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Rei, Hanagata, i Peng Chunmei, red. Ka fei shi guang.: Cofe dream : life of coffee. Taibei Shi: Jian duan chu ban, 2008.

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Rei, Hanagata, i Peng Chunmei, red. Ka fei shi guang: Cofe dream : a coffee revolution. Taibei Shi: Jian duan chu ban, 2007.

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Rei, Hanagata, i Peng Chunmei, red. Ka fei shi guang: Cofe dream : life of coffee. Taibei Shi: Jian duan chu ban, 2008.

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Rei, Hanagata, i Peng Chunmei, red. Ka fei shi guang.: Cofe dream : a coffee revolution. Taibei Shi: Jian duan chu ban, 2007.

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Brown, Dan. Da, fen qi mi ma: The Da Vinci code : [ying han dui zhao]. Tian jin: Tian jin ke ji fan yi chu ban gong si, 2009.

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Części książek na temat "FEM Code"

Shu, Hanlin, Liangzhi Cao, Qingming He, Tao Dai, Zhangpeng Huang i Hongchun Wu. "Study on Unstructured-Mesh-Based Importance Sampling Method of Monte Carlo Simulation". W Springer Proceedings in Physics, 431–44. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-1023-6_38.

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AbstractMonte Carlo (MC) method is widely adopted in radiation transport calculation due to its high accuracy, but suffers from high variance in deep-penetration problems. To obtain reasonable results, variance reduction techniques are necessary and thus be widely studied worldwide. The Consistent Adjoint Driven Importance Sampling (CADIS) method is proved to be an effective variance reduction technique, which generally employs finite-difference discrete ordinate (SN) code to obtain the adjoint flux, and generates parameters of source biasing and weight window for MC code. However, the finite-difference method, which models through structural meshes, will introduce considerable geometric approximations in complex geometry. The finite element method (FEM) performs calculations with lower truncation error and can employ unstructured meshes, which are capable of modeling complex geometry with relatively lower geometric approximations. Therefore, the adjoint flux calculated by unstructured-mesh FEM is able to generate more appropriate parameters of source biasing and weight window which will further reduce the variance of forward MC calculation. A fully automatic unstructured-mesh CADIS method is studied and implemented in this paper, parallel three-dimensional unstructured-mesh neutron-photon coupled transport calculation code NECP-SUN based on the SN method and discontinuous FEM is developed and embedded into the MC code NECP-MCX to calculate the adjoint flux with unstructured meshes. The updated code is applied to the HBR-2 benchmark, the numerical results show that the relative statistic error is reduced by up to 22% compared to the traditional CADIS method while the calculation results are closer to the measurements and the figure of merit (FOM) is increased by 3–4 orders comparing to direct MC simulation.

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Xia, Z., F. Ellyin i G. Meijer. "An Evaluation of a Recently Developed Elastoplastic Constitutive Model by General FEM Code ADINA". W Computational Mechanics ’95, 1768–72. Berlin, Heidelberg: Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/978-3-642-79654-8_292.

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Tao, Qihao, Bo Zhang, Yongbo Hui i Jianqiang Shan. "Development and Application of High-Accuracy Metal Fuel Performance Analysis Code Based on Fem Method". W Proceedings of the 23rd Pacific Basin Nuclear Conference, Volume 2, 793–808. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-8780-9_77.

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Li, Xiangyue, Xiaojing Liu, Xiang Chai i Tengfei Zhang. "Preliminary Multi-physics Coupled Simulation of Small Helium-Xenon Cooled Mobile Nuclear Reactor". W Springer Proceedings in Physics, 690–702. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-1023-6_59.

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AbstractFor the prediction of the internal physical process of SIMONS (Small Innovative helium-xenon cooled MObile Nuclear power Systems), this research created a coupled three-dimensional high-fidelity calculation platform of the neutronics/ thermo-elasticity analysis called FEMAS (FEM based Multi-physics Analysis Software for Nuclear Reactor). This platform allows for the multi-physics coupling calculations of neutron diffusion/ transport, thermal diffusion, and thermal elasticity. It is based on the open-source Monte Carlo code OpenMC and the open-source finite element codes Dealii and Fenics. In this paper, a simplified SIMONS reactor core is analyzed using the coupling platform. The results demonstrate that the coupling platform is capable of accurately predicting the effective multiplication factor change curve, power and temperature distribution, and thermal expansion phenomenon of SIMONS. With 240 kW of thermal power, the local temperature difference of the whole reactor is 390.1 K, and thermal stress-related deformation occurs at a rate of 2.4%. The reactivity feedback caused by the monolith’s heating and thermal expansion is 30.5 pcm. Leveraging the high-precision computing hardware, this platform can assess the core performance to ensure that the core design satisfies the design criteria of ultra-long life and inherent safety.

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Whalen, Michael, Johann Schumann i Bernd Fischer. "Synthesizing Certified Code". W FME 2002:Formal Methods—Getting IT Right, 431–50. Berlin, Heidelberg: Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/3-540-45614-7_25.

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Glesner, Sabine. "Program Checking with Certificates: Separating Correctness-Critical Code". W FME 2003: Formal Methods, 758–77. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-540-45236-2_41.

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Faour, G. A., i K. N. Khouri. "Verification of 3D FEM analysis of ground improvement works using CPT test results". W Cone Penetration Testing 2022, 932–37. London: CRC Press, 2022. http://dx.doi.org/10.1201/9781003329091-139.

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Saouma, Victor, Alain Sellier, Stéphane Multon i Yann Le Pape. "Benchmark Problems for AAR FEA Code Validation". W Diagnosis & Prognosis of AAR Affected Structures, 381–410. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-44014-5_21.

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Yu, Mao-Hong, i Jian-Chun Li. "Implementation of the Unified Strength Theory into FEM Codes". W Advanced Topics in Science and Technology in China, 163–82. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-24590-9_6.

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Streszczenia konferencji na temat "FEM Code"

Zhukov, Aleksandr I., i Akif M. Abdullayev. "Control Rod Ejection Accident: Benchmark Solution With FEM Code DiFis". W 17th International Conference on Nuclear Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/icone17-75889.

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A 3D neutron kinetic code DiFis is designed for steady-state and transition calculation for cores with hexagonal fuel assemblies. The code uses traditional time-dependent diffusion equations in a two-group approximation and takes into account six delayed group neutron precursors. A variation finite element method is used for solution of diffusion equations. The thermal-hydraulic model of the code is based on an “average” fuel rod model. Each fuel assembly contains such a rod, which provides heat transfer from a fuel pellet through the gas gap and the cladding to the coolant. The thermal-hydraulic model is used for feedback correction of macroscopic nuclear cross-sections. The code DiFis has been used for the AER-DYN-002 benchmark problem, which describes an eccentric control rod ejection at hot zero power condition in a VVER-440 type reactor. The only feedback mechanism taken into account is a Doppler one. Comparison with well-known nodal kinetic codes shows acceptable accuracy of DiFis. As an example of transition calculation, a VVER-1000 core behavior during fast power reduction is described.

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Glusa, Christian. "PyNucleus - A FEM code for nonlocal problems." W Proposed for presentation at the Nonlocal Codes held December 2-November 2, 2021 in , . US DOE, 2021. http://dx.doi.org/10.2172/1900339.

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Wright, J. C., i S. Shiraiwa. "Coupling an ICRF core spectral solver to an edge FEM code". W RADIO FREQUENCY POWER IN PLASMAS: Proceedings of the 21st Topical Conference. EURATOM, 2015. http://dx.doi.org/10.1063/1.4936495.

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Neves, Renato Cabrera, i Carlos Yuji Sakuramoto. "Stamping force calculated by FEM code with shell elements". W SAE Brasil 2005 Congress and Exhibit. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2005. http://dx.doi.org/10.4271/2005-01-4055.

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Kondo, Teruyuki, i Yoshihide Ito. "Predicting Ride Comfort on Seat Using Explicit FEM Code". W SAE 2002 World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2002. http://dx.doi.org/10.4271/2002-01-0779.

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Gjerapic, Gordan, i T. Thompson. "Evaluation of Salt Cavern Closure Via FEM Code PLAXIS". W First Southern Hemisphere International Rock Mechanics Symposium. Australian Centre for Geomechanics, Perth, 2008. http://dx.doi.org/10.36487/acg_repo/808_65.

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Agudo, Antonio, Begona Calvo i J. M. M. Montiel. "FEM models to code non-rigid EKF monocular SLAM". W 2011 IEEE International Conference on Computer Vision Workshops (ICCV Workshops). IEEE, 2011. http://dx.doi.org/10.1109/iccvw.2011.6130439.

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Loussert, Alain, i Gerard Vanderborck. "Modelling of single crystal comportment by FEM Code ATILA". W OCEANS 2011. IEEE, 2011. http://dx.doi.org/10.23919/oceans.2011.6107085.

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Xavier, Cesar C., i Claudio C. Motta. "XMAGUN: An iron pole piece PPM design and analysis FEM code". W 2011 IEEE International Vacuum Electronics Conference (IVEC). IEEE, 2011. http://dx.doi.org/10.1109/ivec.2011.5746879.

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Rodriguez, J., i J. Sun. "A Domain Decomposition Study for a Parallel Finite Element Code". W ASME 1992 International Computers in Engineering Conference and Exposition. American Society of Mechanical Engineers, 1992. http://dx.doi.org/10.1115/cie1992-0094.

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Abstract The primary objective of this study was the implementation and comparison of domain decomposition algorithms for a parallel Finite Element Method (FEM) used in the area of Computational Structural Mechanics (CSM). A parallelized FEM code exploits the concurrency inherent in the method to improve its computational efficiency. In order to use a larger size granularity in the parallel computation, the parallel FEM needs to partition its domain into subdomains in a proper manner. It is therefore necessary to search for domain decomposition algorithms to satisfy the special requirements of a parallel FEM. The domain decomposition algorithms investigated in this study physically decompose a meshed domain into a desired number of subdomains. Addressing the requirements of the parallel FEM, these algorithms are able to handle any type of two- and three-dimensional domains, balance the workloads across the multiple processors, minimize the communication overhead among the processors, maintain the integrity of each subdomain, minimize the overall bandwidth of the resulting system matrix, and require only a small amount of CPU time for the decomposition. Modifications to existing decomposition algorithms, such as the single wave propagating method and the bisecting method using vertical/horizontal cuts, are investigated. A new algorithm, based on the proposed multiple wave propagating method and the bisecting method using middle cuts, is formulated. These algorithms are compared with each other using performance criteria based on the overall FEM code and the algorithms themselves. An optimal combination algorithm is proposed. This algorithm combination is flexible and intelligent in some sense since several judgements are suggested to guide and organize different decompositions based on the general geometry of the meshes. The combination algorithm possesses both the desirable features of wave propagating and bisecting methods. As an application, the present algorithm is included in an existing parallel FEM code and some improvements in this code are made. The overall efficiency of the FEM code was increased.

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Raporty organizacyjne na temat "FEM Code"

Tang, M., G. Hommes, S. Aubry i A. Arsenlis. ParaDiS-FEM dislocation dynamics simulation code primer. Office of Scientific and Technical Information (OSTI), wrzesień 2011. http://dx.doi.org/10.2172/1037843.

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Zyvoloski, G., Z. Dash i S. Kelkar. FEHM: finite element heat and mass transfer code. Office of Scientific and Technical Information (OSTI), marzec 1988. http://dx.doi.org/10.2172/5495517.

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Nelson, Gena, Angela Crawford i Jessica Hunt. A Systematic Review of Research Syntheses for Students with Mathematics Learning Disabilities and Difficulties. Boise State University, Albertsons Library, styczeń 2022. http://dx.doi.org/10.18122/sped.143.boisestate.

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The purpose of this document is to provide readers with the coding protocol that authors used to code 36 research syntheses (including meta-analyses, evidence-based reviews, and quantitative systematic reviews) focused on mathematics interventions for students with learning disabilities (LD), mathematics learning disabilities (MLD), and mathematics difficulties (MD). The purpose of the systematic review of mathematics intervention syntheses was to identify patterns and gaps in content areas, instructional strategies, effect sizes, and definitions of LD, MLD, and MD. We searched the literature for research syntheses published between 2000 and 2020 and used rigorous inclusion criteria in our literature review process. We evaluated 36 syntheses that included 836 studies with 32,495 participants. We coded each synthesis for variables across seven categories including: publication codes (authors, year, journal), inclusion and exclusion criteria, content area focus, instructional strategy focus, sample size, methodological information, and results. The mean interrater reliability across all codes using this coding protocol was 90.3%. Although each synthesis stated a focus on LD, MLD, or MD, very few students with LD or MLD were included, and authors’ operational definitions of disability and risk varied. Syntheses predominantly focused on word problem solving, fractions, computer- assisted learning, and schema-based instruction. Syntheses reported wide variation in effectiveness, content areas, and instructional strategies. Finally, our results indicate the majority of syntheses report achievement outcomes, but very few syntheses report on other outcomes (e.g., social validity, strategy use). We discuss how the results of this comprehensive review can guide researchers in expanding the knowledge base on mathematics interventions. The systematic review that results from this coding process is accepted for publication and in press at Learning Disabilities Research and Practice.

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Blaise Collin. Modeling and Analysis of FCM UN TRISO Fuel Using the PARFUME Code. Office of Scientific and Technical Information (OSTI), wrzesień 2013. http://dx.doi.org/10.2172/1111502.

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Dutt, S., A. Friedman i A. Gover. Description of FEL3D: A three dimensional simulation code for TOK and FEL. Office of Scientific and Technical Information (OSTI), październik 1988. http://dx.doi.org/10.2172/6564685.

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Agudelo Urrego, Luz María, Chatuphat Savigamin, Devansh Gandhi, Ghadir Haikal i Antonio Bobet. Assessment of Pipe Fill Heights. Purdue University Press, 2023. http://dx.doi.org/10.5703/1288284317612.

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The design of buried pipes, in terms of the allowable minimum and maximum cover heights, requires the use of both geotechnical and structural design procedures. The geotechnical procedure focuses on estimating the load on the pipe and the compressibility of the foundation soil. The focus of the structural design is choosing the correct cross-section details of the pipe under consideration. The uncertainties of the input parameters and installation procedures are significant. Because of that, the Load Resistance Factor Design (LRFD) method is considered to be suitable for the design of buried pipes. Furthermore, the interaction between the pipe structure and surrounding soil is better captured by implementing soil-structure interaction in a finite element numerical solution technique. The minimum cover height is highly dependent on the anticipated traffic load, whereas the maximum cover height is controlled by the section properties of the pipe and the installation type. The project focuses on the determination of the maximum cover heights for lock-seam CSP, HDPE, PVC, polypropylene, spiral bound steel, aluminum alloy, steel pipe lock seam and riveted, steel pipe and aluminum arch lock seam and riveted, non-reinforced concrete, ribbed and smooth wall polyethylene, smooth wall PVC, vitrified clay, structural plate steel or aluminum alloy pipe, and structural plate pipe arch steel, or aluminum alloy pipes. The calculations are done with the software CANDE, a 2D plane strain FEM code that is well-accepted for designing and analyzing buried pipes, that employs the LRFD method. Plane strain and beam elements are used for the soil and pipe, respectively, while interface elements are placed at the contact between the pipe and the surrounding soil. The Duncan-Selig model is employed for the soil, while the pipe is assumed to be elastic. Results of the numerical simulations for the maximum fill for each type and size of pipe are included in the form of tables and figures.

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Roca, V., i B. Teibi. Sliding Window Random Linear Code (RLC) Forward Erasure Correction (FEC) Schemes for FECFRAME. RFC Editor, styczeń 2020. http://dx.doi.org/10.17487/rfc8681.

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Roca, V., i A. Begen. Forward Error Correction (FEC) Framework Extension to Sliding Window Codes. RFC Editor, styczeń 2020. http://dx.doi.org/10.17487/rfc8680.

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George A. Zyvoloski, Bruce A. Robinson, Zora V. Dash i Lynn L. Trease. User's Manual for the FEHM Application-A Finite-Element Heat- and Mass-Transfer Code. Office of Scientific and Technical Information (OSTI), lipiec 1997. http://dx.doi.org/10.2172/14902.

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Zyvoloski, G. A., B. A. Robinson, Z. V. Dash i L. L. Trease. User`s manual for the FEHM application -- A finite-element heat- and mass-transfer code. Office of Scientific and Technical Information (OSTI), lipiec 1997. http://dx.doi.org/10.2172/569043.

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