SÁCH VÀ CUỘC SỐNG 12

Authors:  Kieu, Phuong Chi Keywords:  Function algebra Issue Date:  2002 Publisher:  H. : ĐHQGHN Series/Report no.:  Vol. 18;No. 3 (2002) Abstract:  In this paper we prove the theorem, on approximation of continous function algebra on a disk. This result is an extension of the Werner's one. Description:  p. 1-4 URI:  http://repository.vnu.edu.vn/handle/VNU_123/58421 ISSN:  2588-1124 Appears in Collections: Mathematics and Physics

Authors:  Ta, Khac Cu Keywords:  fd-cap sets;hyperspaces;convex n-cell Issue Date:  2002 Publisher:  H. : ĐHQGHN Series/Report no.:  Vol. 18;No. 3 (2002) Abstract:  If X is a convex n-cell, n > 2. then every non-trivial convex growth polyhedron hyperspace G is an fd-cap set in the closure c of G in C C { X ) . Description:  p. 5-9 URI:  http://repository.vnu.edu.vn/handle/VNU_123/58422 ISSN:  2588-1124 Appears in Collections: Mathematics and Physics

Authors:  Vu, Quang Dung Nguyen, Viet Ha To, Van Khanh Keywords:  Dynamically reconfiguration architecture;embedded systems Issue Date:  2007 Publisher:  H. : ĐHQGHN Series/Report no.:  Vol. 23;No. 1 (2007) Abstract:  In designing embedded systems, the exploration and synthesis of different design altematives and co-verification of a specific implementation are the most demanding tasks. Kaffe, an open-source technology, provides a platform for building a runtime environment and integrating different design methodologies. Integrating Kaffe into embedded systems is the cornerstone of java-like technologies, allowing possibilities such as the development of portable programs on mobile devices. In this paper, we introduce a co-design environment based on Kaffe vvhich supports the specification and prototyping o f dynamically reconfigurable embedded systems. Description:  p. 15-21 URI:  http://repository.vnu.edu.vn/handle/VNU_123/5747...

Authors:  Nguyen, Suan Han Nguyen, Nhu Xuan Keywords:  divergences;photon self - energy diagram;(2+1) dimensional quantum electrodynamics Issue Date:  2007 Publisher:  H. : ĐHQGHN Series/Report no.:  Vol. 23;No. 1 (2007) Abstract:  The divergence of the photon self-energy diagram in spinor quantum electrodynamics in (2 + 1) dimensional space time- (QEDs) is studied by the Pauli-Villars regularization and dimensional regularization. Results obtained by two different methods are coincided if the gauge invariant of theory is considered carefully step by step in these calculations. Description:  p. 22-27 URI:  http://repository.vnu.edu.vn/handle/VNU_123/57481 ISSN:  2588-1124 Appears in Collections: Mathematics and Physics

Authors:  Trinh, Van Mung Pham, Khac Hung Keywords:  diffusion;amorphous solid;disordered one-dimension;simulation;blocking effect Issue Date:  2011 Publisher:  H. : ĐHQGHN Series/Report no.:  Vol. 27;No. 1 (2011) Abstract:  The simulation of dynamical process of target particles in one-dimensional lattice is carried out for two types of energetic disorders. The particles are non-interacting except that ttre double occupancy is forbidden. It is found that the diffusion quantities such as the correlation factor and averaged time between two subsequent jumps are quite different for the lattices of site and transition disorders. However, the diffusion constant of both lattices is close to each other. Closed value of diffusion constant is obtained for the lattice with random distributed barriers. At the wide temperahue range the diffusivity follows the Arrhenius law. The blocking effect decreases the correlation factor and activation energy. The...

Authors:  Nguyen, Xuan Toi Nguyen, Viet Hung Pham, Bao Son Keywords:  plagiarism detection;copied documents;similarity Issue Date:  2011 Publisher:  H. : ĐHQGHN Series/Report no.:  Vol. 27;No. 1 (2011) Abstract:  With the rapid growth of information technology, Internet and digital libraries have been developing so fast that illegal copying of documents is becoming easier and more popular. A challenging question is how to identify documents with similar content which are candidate of plagiarism. There are several approaches for estimating the similarity between two documents and each has its own advantages and disadvantages. An approach may be effective in one domain but may not work in others. In this paper, we propose a unified plagiarism detection framework that can identify which approach works most effectively in a new domain. Experimental results on three different corpora for different languages have demonstrated the effectiveness of...

Authors:  Nguyen, Quy Thuong Keywords:  Composite plate;bending;steady heat transfer;polymer PVC Issue Date:  2012 Publisher:  H. : ĐHQGHN Series/Report no.:  Vol. 28;No. 2 (2012) Abstract:  Composite material with polymer matrix - titanium particle is qidely applied in Vietnam, today. In this paper, the bending of thin polymer composite plate with Titanium particles under the effect of the steady temperature field is investigated. The paper has established the boundary problem of a simply supported composite plate reinforced by particles under the influence of steady heat transfer process. Description:  p. 77-83 URI:  http://repository.vnu.edu.vn/handle/VNU_123/56346 ISSN:  2588-1124 Appears in Collections: Mathematics and Physics