Hiệp hội cán bộ thư viện đại học và nghiên cứu Phi-lip-pin trong việc phục vụ các chuyên gia thông tin thư viện

Authors:	Lapuz, Elvira B.
Keywords:	Thư viện đại học;Cán bộ thư viện;Nghiên cứu;Thông tin;Philippin
Issue Date:	2009
Publisher:	Đại học Quốc gia Hà Nội
Description:	tr. 428-436 Kỷ yếu đại hội cán bộ thư viện các nước Đông Nam Á lần thứ 14
URI:	http://repository.vnu.edu.vn/handle/VNU_123/31204
Appears in Collections:	Kỷ yếu Hội nghị - Hội thảo (LIC)

Quản lý hội thư viện tại Đức

Authors:	Lison, Barbara H.
Keywords:	Thư viện;Quản lý;Đức
Issue Date:	2009
Publisher:	Đại học Quốc gia Hà Nội
Description:	tr. 437-446 Kỷ yếu đại hội cán bộ thư viện các nước Đông Nam Á lần thứ 14
URI:	http://repository.vnu.edu.vn/handle/VNU_123/31278
Appears in Collections:	Kỷ yếu Hội nghị - Hội thảo (LIC)

Non-linear and linear analysis of stiffened laminated plates

Authors:	Vu, Do Long
Keywords:	linear analysis;Non-linear analysis;stiffened laminated plates
Issue Date:	2004
Publisher:	H. : ĐHQGHN
Series/Report no.:	Vol. 20;No. 1 (2004)
Abstract:	The non-linear displacement formulation of laminated composite plates subjected to perpendicular loads by Ritz and Finite element method (FEM), are presented. Cases of stiffened and unstiffened laminated plates are considered.
Description:	p. 43-52
URI:	http://repository.vnu.edu.vn/handle/VNU_123/57892
ISSN:	2588-1124
Appears in Collections:	Mathematics and Physics

On discretisable formulas in duration calculus

Authors:	Pham, Hong Thai
Keywords:	discretisable formulas;duration calculus
Issue Date:	2004
Publisher:	H. : ĐHQGHN
Series/Report no.:	Vol. 20;No. 1 (2004)
Abstract:	Model checking problem for real-time systems is a hard problem and has high complexity because time model of system is dense and continuous. Especially, as known, almost accumulated timed properties which are expressed by duration formulas in Duration Calculus is undecidable or decidable but with very high complexity. However, fortunately for some formulas, to avoid high complexity we can only check them in integral model of time instead of real time model. Such formulas are called discretisable formulas. In this paper, we show a subclass of formulas in Duration Calculus which is constructed from a linear constraint of state durations is discretisable and based on this we also give some ideas for checking them. The our results includes some results of the others.
Description:	p. 53-66
URI:	http://repository.vnu.edu.vn/handle/VNU_123/57893
ISSN:	2588-1124
Appears in Collections:	Mathematics and Physics

“Shift-Left” Algorithms transforming sequential processes into concurrent ones

Authors:	Hoang, Chi Thanh
Keywords:	Reliance alphabet;trace;Petri net;concurrent step
Issue Date:	2006
Publisher:	H. : ĐHQGHN
Series/Report no.:	Vol. 22;No. 2 (2006)
Abstract:	Finding concurrent processes of a system is an objective of system controls, because it shows an optimal way to perform processes. In this paper we build two iterative algorithms for transforming sequential processes of a reliance alphabet and of a Place/Transition net into concurrent ones. The complexity of these algorithms is also considered.
Description:	p. 55-64
URI:	http://repository.vnu.edu.vn/handle/VNU_123/57770
ISSN:	2588-1124
Appears in Collections:	Mathematics and Physics

Sufficient conditions for the convergence of a class of rational recursive sequences

Authors:	Dang, Vu Giang Dinh, Cong Huong
Keywords:	positive bounded recursive sequences;full-limiting sequences
Issue Date:	2006
Publisher:	H. : ĐHQGHN
Series/Report no.:	Vol. 22;No. 1 (2006)
Abstract:	We study the convergence of positive recursive sequence Zn + 1 = / ( x n , i n_ i). Here f ( x , y ) is a positive continuous function of two variables.
Description:	p. 17-25
URI:	http://repository.vnu.edu.vn/handle/VNU_123/57776
ISSN:	2588-1124
Appears in Collections:	Mathematics and Physics

Effect of preparation conditions on optical properties of CdTe quantum dot dispersed in water

Authors:	Nguyen, Van Hung Duong, Anh Tuan Trinh, Duc Thien Nguyen, Dang Phu Danh, Bich Do
Keywords:	CdTe;Quantum dots;optical properties
Issue Date:	2012
Publisher:	H. : ĐHQGHN
Series/Report no.:	Vol. 28;No. 1 (2012)
Abstract:	CdTe quantum dots dispersed in water were prepared successfully by the microwave irradiation method. The influence of the pH value of the solution precursor, irradiation time and microwave power on the structure, size and optical properties of CdTe quantum dots was investigated. The fluorescence of CdTe quantum dots studies were illustrated that the samples which were synthesized at pH value of 7 exhibited the best fluorescence. The absorption, fluorescence spectra and TEM images showed that the microwave power and the irradiation time influenced significantly on the size of CdTe quantum dot as well as their optical properties. The fluorescence spectra were red-shift with the increase of the irradiation time and microwave power.
Description:	p. 39-45
URI:	http://repository.vnu.edu.vn/handle/VNU_123/56359
ISSN:	2588-1124
Appears in Collections:	Mathematics and Physics

Temperature dependence of hard magnetic properties of FePd nanoparticles prepared by sonoelectrochemistry

Authors:	Nguyen, Thi Thanh Van Truong, Thanh Trung Nguyen, Hoang Nam Nguyen, Hoang Luong
Keywords:	magnetic properties;FePd nanoparticles;sonoelectrochemistry
Issue Date:	2012
Publisher:	H. : ĐHQGHN
Series/Report no.:	Vol. 28;No. 1 (2012)
Abstract:	Hard magnetic properties of magnetic nanoparticles FePd were investigated in dependence of temperature. Magnetic nanoparticles FePd were prepared from palladium acetate and iron acetate by sonoelectrochemistry, an useful technique to make metallic nanoparticles using ultrasound. Upon the annealing at 450°C to 650°C samples have ordered L10 structure and show hard magnetic properties with high coercivity up to 2.1 kOe at room temperature and increases to 2.43 kOe with decreasing temperature down to 2 K.
Description:	p. 46-51
URI:	http://repository.vnu.edu.vn/handle/VNU_123/56361
ISSN:	2588-1124
Appears in Collections:	Mathematics and Physics

Predator-prey System with the Effect of Environmental Fluctuation

Authors:	Le, Hong Lan
Keywords:	Lotka-Volterra Equation;Predator - Prey;Telegraph noise;Markov periodic solution
Issue Date:	2014
Publisher:	H. : ĐHQGHN
Series/Report no.:	Vol. 30;No. 3 (2014)
Abstract:	In this paper we study the trajectory behavior of Lotka - Volterra predator - prey systems with periodic coefficients under telegraph noises. We describe the - limit set of the solution, give sufficient conditions for the persistence and prove the existence of a Markov periodic solution.
Description:	p. 49-69
URI:	http://repository.vnu.edu.vn/handle/VNU_123/55998
ISSN:	2588-1124
Appears in Collections:	Mathematics and Physics

Combination of 4-ATP Coated Silver Nanoparticles and Magnetic Fe3O4 Nanoparticles by Inverse Emulsion Method

Authors:	Chu, Tien Dung Nguyen, Quang Loc Phi, Thi Huong Dinh, Thi Thuy Duong Tran, Thi Hong
Keywords:	Multifuntional nanoparticles;Fe3O4 nanoparticles;Ag nanoparticles;Inverse micro emulsion
Issue Date:	2014
Publisher:	H. : ĐHQGHN
Series/Report no.:	Vol. 30;No. 2 (2014)
Abstract:	4-Aminothiophenol (4-ATP) functionalized silver nanoparticles and magnetic Fe3O4 nanoparticles were combined in a bi-functional nanocolloids which were covered by an approximately 5nm SiO2 layer by inverse emulsion method in order to apply to biomedicine. High saturated magnetization Ms indicated that the colloids are easy to be controlled by external magnetic field, while the characteristic Surface Enhanced Raman peak positions of 4-ATP absorbed on the metal particles were occurred without any alterations, which significantly predicted attractive applicability of the colloids for biomedical labeling.
Description:	p. 1-9
URI:	http://repository.vnu.edu.vn/handle/VNU_123/56057
ISSN:	2588-1124
Appears in Collections:	Mathematics and Physics

Lễ Tết cổ truyền Việt Nam

Authors:	Ngọc Quỳnh
Keywords:	Tết cổ truyền
Issue Date:	2005
Publisher:	Viện Nghiên cứu Phật học Việt Nam
Description:	Tạp chí Nghiên cứu Phật học. Số 1. Năm 2005. TNS003
URI:	http://repository.vnu.edu.vn/handle/VNU_123/55185
Appears in Collections:	Nghiên cứu Phật học và Phật hoàng Trần Nhân Tông (LIC)

Những vấn đề về Tâm thức

Authors:	Lê, Hữu Tuấn
Keywords:	Tâm thức;Phật giáo
Issue Date:	2005
Publisher:	Viện Nghiên cứu Phật học Việt Nam
Description:	Tạp chí Nghiên cứu Phật học. Số 1. Năm 2005. TNS008
URI:	http://repository.vnu.edu.vn/handle/VNU_123/55190
Appears in Collections:	Nghiên cứu Phật học và Phật hoàng Trần Nhân Tông (LIC)