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Construction of Normal Discrete Velocity Models of the Boltzmann Equation 玻尔兹曼方程正态离散速度模型的构造
Il Nuovo cimento della Societa italiana di fisica. C Pub Date : 2010-01-01 DOI: 10.1393/NCC/I2010-10563-7
Mirela Vinerean, Åsa Windfäll, A. Bobylev
{"title":"Construction of Normal Discrete Velocity Models of the Boltzmann Equation","authors":"Mirela Vinerean, Åsa Windfäll, A. Bobylev","doi":"10.1393/NCC/I2010-10563-7","DOIUrl":"https://doi.org/10.1393/NCC/I2010-10563-7","url":null,"abstract":"Discretization methods have been developed on the idea of replacing the original Boltzmann equation (BE) by a finite set of nonlinear hyperbolic PDEs corresponding to the densities linked to a suitable finite set of velocities. One open problem related to the discrete BE is the construction of normal (fulfilling only physical conservation laws) discrete velocity models (DVMs). In many papers on DVMs, authors postulate from the beginning that a finite velocity space with such properties is given and after that study the discrete BE. Our aim is not to study the equations for DVMs, but to discuss all possible choices of finite sets of velocities satisfying this type of restrictions. Using our previous results, i.e. the general algorithm for the construction of normal discrete kinetic models (DKMs), we develop and implement an algorithm for the particular case of DVMs of the BE and give a complete classification for models with small number n of velocities (n ≤ 10).","PeriodicalId":81495,"journal":{"name":"Il Nuovo cimento della Societa italiana di fisica. C","volume":"33 1","pages":"257-264"},"PeriodicalIF":0.0,"publicationDate":"2010-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66580489","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
Solution of the one velocity 2D and 3D source and criticality problems by the Boundary Element – Response Matrix (BERM) method in the A2-SP3 用边界元-响应矩阵(边界元-响应矩阵)方法求解A2-SP3中一速度二维和三维震源及临界问题
Il Nuovo cimento della Societa italiana di fisica. C Pub Date : 2010-01-01 DOI: 10.1393/NCC/I2010-10576-2
V. Giusti, B. Montagnini, G. Coppa, S. Dulla
{"title":"Solution of the one velocity 2D and 3D source and criticality problems by the Boundary Element – Response Matrix (BERM) method in the A2-SP3","authors":"V. Giusti, B. Montagnini, G. Coppa, S. Dulla","doi":"10.1393/NCC/I2010-10576-2","DOIUrl":"https://doi.org/10.1393/NCC/I2010-10576-2","url":null,"abstract":"The paper illustrates some applications of a variant of the simplified spherical harmonics (SPN) method, called AN, in order to solve 2D and 3D source and criticality problems. The AN equations (here considered only for N = 2, which corresponds to the SP3 approximation) are solved by means of a Boundary Element-Response Matrix technique.","PeriodicalId":81495,"journal":{"name":"Il Nuovo cimento della Societa italiana di fisica. C","volume":"33 1","pages":"95-101"},"PeriodicalIF":0.0,"publicationDate":"2010-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66580501","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: 4
Understanding cosmic rays and searching for dark matter with PAMELA 用PAMELA了解宇宙射线和寻找暗物质
Il Nuovo cimento della Societa italiana di fisica. C Pub Date : 2010-01-01 DOI: 10.1393/NCC/I2011-10694-3
R. Sparvoli
{"title":"Understanding cosmic rays and searching for dark matter with PAMELA","authors":"R. Sparvoli","doi":"10.1393/NCC/I2011-10694-3","DOIUrl":"https://doi.org/10.1393/NCC/I2011-10694-3","url":null,"abstract":"The instrument PAMELA, in orbit since June 15th, 2006 on board of the Russian satellite Resurs DK1, is delivering to ground 16 Gigabytes of data every day. The apparatus is designed to study charged particles in the cosmic radiation, with a particular focus on antimatter and signals of dark matter annihilation. A combination of a magnetic spectrometer and different detectors allows antiparticles to be reliably identified from a large background of other charged particles. After 4 years of operation in flight, PAMELA is now delivering coherent results about spectra and chemical composition of the charged cosmic radiation, allowing scenarios of production and propagation of cosmic rays to be fully established and understood.","PeriodicalId":81495,"journal":{"name":"Il Nuovo cimento della Societa italiana di fisica. C","volume":"10 1","pages":"1-9"},"PeriodicalIF":0.0,"publicationDate":"2010-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66580920","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
Can colliders disprove leptogenesis 对撞机能证明纤体发生是错误的吗
Il Nuovo cimento della Societa italiana di fisica. C Pub Date : 2009-06-03 DOI: 10.1393/ncc/i2010-10526-0
J. Frère
{"title":"Can colliders disprove leptogenesis","authors":"J. Frère","doi":"10.1393/ncc/i2010-10526-0","DOIUrl":"https://doi.org/10.1393/ncc/i2010-10526-0","url":null,"abstract":"While leptogenesis is a very solid but hard to check contender for the generation of the observed excess of baryons over anti-baryons in the Universe, we show that the observation of gauge bosons associated with right-handed currents at present or future colliders would suffice to disprove its most canonical mechanism. © Societa Italiana di Fisica.","PeriodicalId":81495,"journal":{"name":"Il Nuovo cimento della Societa italiana di fisica. C","volume":"32 1","pages":"329-334"},"PeriodicalIF":0.0,"publicationDate":"2009-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66580379","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
Drug design: Insights from atomistic simulations 药物设计:来自原子模拟的见解
Il Nuovo cimento della Societa italiana di fisica. C Pub Date : 2009-03-01 DOI: 10.1393/NCC/I2009-10365-0
Francesca Collu, E. Spiga, Amita Kumar, Eric Hajjar, A. Vargiu, M. Ceccarelli, P. Ruggerone
{"title":"Drug design: Insights from atomistic simulations","authors":"Francesca Collu, E. Spiga, Amita Kumar, Eric Hajjar, A. Vargiu, M. Ceccarelli, P. Ruggerone","doi":"10.1393/NCC/I2009-10365-0","DOIUrl":"https://doi.org/10.1393/NCC/I2009-10365-0","url":null,"abstract":"","PeriodicalId":81495,"journal":{"name":"Il Nuovo cimento della Societa italiana di fisica. C","volume":"32 1","pages":"67-71"},"PeriodicalIF":0.0,"publicationDate":"2009-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66580552","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
A HPC and Grid enabling framework for genetic linkage analysis of SNPs 单核苷酸多态性遗传连锁分析的HPC和网格支持框架
Il Nuovo cimento della Societa italiana di fisica. C Pub Date : 2009-03-01 DOI: 10.1393/NCC/I2009-10414-8
L. Milanesi, A. Calabria, D. Pasquale, Matteo Gnocchi, A. Orro, G. Trombetti
{"title":"A HPC and Grid enabling framework for genetic linkage analysis of SNPs","authors":"L. Milanesi, A. Calabria, D. Pasquale, Matteo Gnocchi, A. Orro, G. Trombetti","doi":"10.1393/NCC/I2009-10414-8","DOIUrl":"https://doi.org/10.1393/NCC/I2009-10414-8","url":null,"abstract":"","PeriodicalId":81495,"journal":{"name":"Il Nuovo cimento della Societa italiana di fisica. C","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2009-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66580786","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
YSO jets: MHD simulations with radiative cooling YSO射流:带辐射冷却的MHD模拟
Il Nuovo cimento della Societa italiana di fisica. C Pub Date : 2009-03-01 DOI: 10.1393/NCC/I2009-10397-4
O. Tesileanu, A. Mignone, S. Massaglia
{"title":"YSO jets: MHD simulations with radiative cooling","authors":"O. Tesileanu, A. Mignone, S. Massaglia","doi":"10.1393/NCC/I2009-10397-4","DOIUrl":"https://doi.org/10.1393/NCC/I2009-10397-4","url":null,"abstract":"","PeriodicalId":81495,"journal":{"name":"Il Nuovo cimento della Societa italiana di fisica. C","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2009-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66580647","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
The PROMETEO Code: A flexible tool for Free Electron Laser study PROMETEO代码:自由电子激光研究的灵活工具
Il Nuovo cimento della Societa italiana di fisica. C Pub Date : 2009-03-01 DOI: 10.1393/NCC/I2009-10419-3
G. Dattoli, P. Ottaviani, S. Pagnutti
{"title":"The PROMETEO Code: A flexible tool for Free Electron Laser study","authors":"G. Dattoli, P. Ottaviani, S. Pagnutti","doi":"10.1393/NCC/I2009-10419-3","DOIUrl":"https://doi.org/10.1393/NCC/I2009-10419-3","url":null,"abstract":"","PeriodicalId":81495,"journal":{"name":"Il Nuovo cimento della Societa italiana di fisica. C","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2009-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66580796","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: 4
HPC, grid and data infrastructures for astrophysics: An integrated view 天体物理学的高性能计算、网格和数据基础设施:综合观点
Il Nuovo cimento della Societa italiana di fisica. C Pub Date : 2009-03-01 DOI: 10.1393/NCC/I2009-10372-1
F. Pasian
{"title":"HPC, grid and data infrastructures for astrophysics: An integrated view","authors":"F. Pasian","doi":"10.1393/NCC/I2009-10372-1","DOIUrl":"https://doi.org/10.1393/NCC/I2009-10372-1","url":null,"abstract":"","PeriodicalId":81495,"journal":{"name":"Il Nuovo cimento della Societa italiana di fisica. C","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2009-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66580577","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
Computational challenges about nanostructures and biosystems at surfaces 纳米结构和表面生物系统的计算挑战
Il Nuovo cimento della Societa italiana di fisica. C Pub Date : 2009-03-01 DOI: 10.1393/NCC/I2009-10370-3
R. Felice, S. Corni, E. Molinari
{"title":"Computational challenges about nanostructures and biosystems at surfaces","authors":"R. Felice, S. Corni, E. Molinari","doi":"10.1393/NCC/I2009-10370-3","DOIUrl":"https://doi.org/10.1393/NCC/I2009-10370-3","url":null,"abstract":"","PeriodicalId":81495,"journal":{"name":"Il Nuovo cimento della Societa italiana di fisica. C","volume":"032 1","pages":"57-60"},"PeriodicalIF":0.0,"publicationDate":"2009-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66580568","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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