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2020 Ian Snook Prize Problem: Three Routes to the Information Dimensions for One-Dimensional Stochastic Random Walks and Their Equivalent Two-Dimensional Baker Maps 2020年Ian Snook奖问题:一维随机漫步及其等效二维贝克图的信息维度的三条路径
computational methods in science and technology Pub Date : 2019-01-01 DOI: 10.12921/cmst.2019.0000045
W. Hoover, C. G. Hoover
{"title":"2020 Ian Snook Prize Problem: Three Routes to the Information Dimensions for One-Dimensional Stochastic Random Walks and Their Equivalent Two-Dimensional Baker Maps","authors":"W. Hoover, C. G. Hoover","doi":"10.12921/cmst.2019.0000045","DOIUrl":"https://doi.org/10.12921/cmst.2019.0000045","url":null,"abstract":"","PeriodicalId":10561,"journal":{"name":"computational methods in science and technology","volume":"73 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86348944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Nakao’s method and an interval difference scheme of second order for solving the elliptic BVP 求解椭圆型BVP的Nakao方法及二阶区间差分格式
computational methods in science and technology Pub Date : 2019-01-01 DOI: 10.12921/CMST.2019.0000016
A. Marciniak
{"title":"Nakao’s method and an interval difference scheme of second order for solving the elliptic BVP","authors":"A. Marciniak","doi":"10.12921/CMST.2019.0000016","DOIUrl":"https://doi.org/10.12921/CMST.2019.0000016","url":null,"abstract":": In the paper we compare Nakao’s method to our interval difference scheme of second order. Repeating some computational examples of Nakao, we have observed that our implementation of his method gives better results. Moreover, it appears that the presented interval difference scheme gives better enclosures of exact solutions than Nakao’s method. W˛e also point out that the considered interval method can be used to solve the Poisson equation with Dirichlet’s condition, for which Nakao’s method is not applicable.","PeriodicalId":10561,"journal":{"name":"computational methods in science and technology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86774684","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Improvements to the two-phase sandwich method for calculating the melting points of pure metals 计算纯金属熔点的两相夹心法的改进
computational methods in science and technology Pub Date : 2019-01-01 DOI: 10.12921/cmst.2019.0000018
K. Rybacki, S. Winczewski, Valeriy Pleechystyy, J. Rybicki
{"title":"Improvements to the two-phase sandwich method for calculating the melting points of pure metals","authors":"K. Rybacki, S. Winczewski, Valeriy Pleechystyy, J. Rybicki","doi":"10.12921/cmst.2019.0000018","DOIUrl":"https://doi.org/10.12921/cmst.2019.0000018","url":null,"abstract":": The thermophysical properties of metal alloys are often investigated via molecular dynamics (MD) simulations. An exact and reliable estimation of the thermophysical parameters from the MD data requires a properly and carefully elaborated methodology. In this paper, an improved two-phase sandwich method for the determination of the metal melting temperature is proposed, based on the solid-liquid equilibrium theory. The new method was successfully implemented using the LAMMPS software and the C++11 Standard Libraries and then applied to aluminum and copper systems. The results show that the proposed procedure allows more precise calculations of the melting temperature than the widely used one-phase boundary methods.","PeriodicalId":10561,"journal":{"name":"computational methods in science and technology","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77319742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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computational methods in science and technology Pub Date : 2019-01-01 DOI: 10.12921/cmst.2019.9999991
J. Smith
{"title":"test article qwerty asdfgh zxcvbn poiuyt lkjhgf mnbvcx qzawsx edcrfv tgbyhn ujmikolp zaqxswcdevfr cdevfrbgt bgtnhymju mnbbvcvcx lkjkjhjhg gfdfdsdsa poioiuiuy uytytrtre trerewewq qwerty asdfgh zxcvbn poiuyt lkjhgf mnbvcx","authors":"J. Smith","doi":"10.12921/cmst.2019.9999991","DOIUrl":"https://doi.org/10.12921/cmst.2019.9999991","url":null,"abstract":"","PeriodicalId":10561,"journal":{"name":"computational methods in science and technology","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87364532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Alternative route search algorithm for robust and balanced traffic in telecommunication network 通信网鲁棒均衡业务的备选路由搜索算法
computational methods in science and technology Pub Date : 2019-01-01 DOI: 10.12921/cmst.2018.0000038
M. Wiktor
{"title":"Alternative route search algorithm for robust and balanced traffic in telecommunication network","authors":"M. Wiktor","doi":"10.12921/cmst.2018.0000038","DOIUrl":"https://doi.org/10.12921/cmst.2018.0000038","url":null,"abstract":": This paper discusses routing policy in optical transport networks. Dijkstra’s shortest path algorithm is compared to a new path computation technique based on heuristics originated from human behavior combined with spectral graph embedding. The two-step procedure allows one to separate the computationally expensive and computationally cheap parts for efficient implementation in network infrastructure.","PeriodicalId":10561,"journal":{"name":"computational methods in science and technology","volume":"124 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90871108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Computation of latent heat in the system of multi-component order parameter: 3D Ashkin-Teller model 多分量序参数系统的潜热计算:三维Ashkin-Teller模型
computational methods in science and technology Pub Date : 2019-01-01 DOI: 10.12921/CMST.2018.0000053
D. Jeziorek-Kniola, Z. Wojtkowiak, G. Musiał
{"title":"Computation of latent heat in the system of multi-component order parameter: 3D Ashkin-Teller model","authors":"D. Jeziorek-Kniola, Z. Wojtkowiak, G. Musiał","doi":"10.12921/CMST.2018.0000053","DOIUrl":"https://doi.org/10.12921/CMST.2018.0000053","url":null,"abstract":"The method for computing the latent heat in a system with many independently behaving components of the order parameter proposed previously is presented for a chosen point of the phase diagram of the 3D Ashkin-Teller (AH) model. Binder, Challa, and Lee-Kosterlitz cumulants are exploited and supplemented by the use of the energy distribution histogram. The proposed computer experiments using the Metropolis algorithm calculate the cumulants in question, the internal energy and its partial contributions as well as the energy distribution for the model Hamiltonian and its components. The important part of our paper is an attempt to validate the results obtained by several independent methods.","PeriodicalId":10561,"journal":{"name":"computational methods in science and technology","volume":"214 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77489942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
On the solution of a problem of extended thermoelasticity theory (ETE) by using a complete finite element approach 用完全有限元方法求解扩展热弹性理论的一个问题
computational methods in science and technology Pub Date : 2019-01-01 DOI: 10.12921/CMST.2018.0000062
Om Namha Shivay, Santwana Mukhopadhyay
{"title":"On the solution of a problem of extended thermoelasticity theory (ETE) by using a complete finite element approach","authors":"Om Namha Shivay, Santwana Mukhopadhyay","doi":"10.12921/CMST.2018.0000062","DOIUrl":"https://doi.org/10.12921/CMST.2018.0000062","url":null,"abstract":": This paper attempts to apply a complete finite element approach for the solution of problems on coupled dynamical thermoelasticity theory. Presently, we employ the extended thermoelasticity theory proposed by Lord and Shulman (1969) and consider a problem of linear thermoelasticity for the hollow disk with a thermal shock applied on its inner boundary. The thermoelastic equations have been solved using the complete finite element approach, where we have used discretization in the time domain as well as space domain and applied the Galerkin’s approach of the finite element for both time and space domain. We implement our scheme for a particular case and carry out computational work to obtain the numerical solution of the problem. Further, we compare the present results with the solutions obtained by FEM with Newmark time integration method and the solutions obtained by a trans-FEM method in which Laplace transform technique is used for the time domain. We show that, there is a perfect match in solutions of complete finite element approach with trans-finite element method and Newmark method. The efficiency of the method with respect to computation time is also compared with other two methods.","PeriodicalId":10561,"journal":{"name":"computational methods in science and technology","volume":"168 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80592761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Determination of thermal conductivity coefficient by Green-Kubo formula using the minimum image method 最小图像法Green-Kubo公式确定导热系数
computational methods in science and technology Pub Date : 2019-01-01 DOI: 10.12921/CMST.2019.0000019
Krzysztof Hyżorek, K. Ciesielczyk, K. V. Tretiakov
{"title":"Determination of thermal conductivity coefficient by Green-Kubo formula using the minimum image method","authors":"Krzysztof Hyżorek, K. Ciesielczyk, K. V. Tretiakov","doi":"10.12921/CMST.2019.0000019","DOIUrl":"https://doi.org/10.12921/CMST.2019.0000019","url":null,"abstract":"The thermal conductivity coefficients of solid argon have been evaluated by equilibrium molecular dynamic simulations. A Lennard-Jones interatomic potential has been used to model the interactions between argon atoms. In simulations and calculations of the thermal conductivity by the Green-Kubo formula, the long-range interactions between atoms have been taken into account using the minimum image method (MIM). The study shows that there are no significant differences between the values of the thermal conductivity obtained by method using MIM and those coming from traditional Green-Kubo approach. Both experimental data and results of molecular dynamics simulations are also in agreement with the Klemens-Callaway model for the thermal conductivity based on the three-phonon Umklapp scattering.","PeriodicalId":10561,"journal":{"name":"computational methods in science and technology","volume":"71 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75930051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Paintball – Automated Wordnet Expansion Algorithm based on Distributional Semantics and Information Spreading 彩弹-基于分布语义和信息传播的自动Wordnet扩展算法
computational methods in science and technology Pub Date : 2019-01-01 DOI: 10.12921/cmst.2018.0000051
Maciej Piasecki
{"title":"Paintball – Automated Wordnet Expansion Algorithm based on Distributional Semantics and Information Spreading","authors":"Maciej Piasecki","doi":"10.12921/cmst.2018.0000051","DOIUrl":"https://doi.org/10.12921/cmst.2018.0000051","url":null,"abstract":"plWordNet has been consequently built on the basis of the corpus-based wordnet development method. As plWordNet construction had started from scratch it was necessary to find a way to reduce the amount of work required, and not to reduce the quality. In the paper we discuss the gained experience in applying different tools based on Distributional Semantics methods to support the work of lexicographers. A special attention is given to the Paintball algorithm for semiautomated wordnet expansion and its application in the WordnetWeaver system.","PeriodicalId":10561,"journal":{"name":"computational methods in science and technology","volume":"71 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86226401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
2019 SNOOK Prizes in Computational Statistical Mechanics 2019年计算统计力学奖
computational methods in science and technology Pub Date : 2018-06-29 DOI: 10.12921/CMST.2019.0000009
W. Hoover, C. G. Hoover
{"title":"2019 SNOOK Prizes in Computational Statistical Mechanics","authors":"W. Hoover, C. G. Hoover","doi":"10.12921/CMST.2019.0000009","DOIUrl":"https://doi.org/10.12921/CMST.2019.0000009","url":null,"abstract":"The one-dimensional φ Model generalizes a harmonic chain with nearest-neighbor Hooke’s-Law interactions by adding quartic potentials tethering each particle to its lattice site. In their studies of this model Kenichiro Aoki and Dimitri Kusnezov emphasized its most interesting feature: because the quartic tethers act to scatter long-wavelength phonons, φ chains exhibit Fourier heat conduction. In his recent Snook-Prize work Aoki also showed that the model can exhibit chaos on the threedimensional energy surface describing a two-body two-spring chain. That surface can include at least two distinct chaotic seas. Aoki pointed out that the model typically exhibits different kinetic temperatures for the two bodies. Evidently few-body φ problems merit more investigation. Accordingly, the 2019 Prizes honoring Ian Snook (1945–2013) [five hundred United States dollars cash from the Hoovers and an additional $500 cash from the Institute of Bioorganic Chemistry of the Polish Academy of Sciences and the Poznan Supercomputing and Networking Center] will be awarded to the author(s) of the most interesting work analyzing and discussing few-body φ models from the standpoints of dynamical systems theory and macroscopic thermodynamics, taking into account the model’s ability to maintain a steady-state kinetic temperature gradient as well as at least two coexisting chaotic seas in the presence of deterministic chaos.","PeriodicalId":10561,"journal":{"name":"computational methods in science and technology","volume":"104 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88130508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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