Hung Nguyen Manh

• Le Quy Don Technical University

The firewall device has a main task that is protecting the internal network against attacks from outside the internal network, and it must itself against attacks aimed directly at himself, one of which is offensive attack DoS against default firewall rule. Several techniques have been proposed to resist this type of attack, the proposed techniques...

Regarding to the current computer networks, firewall is vital equipment for ensuring the security of entire systems. With the role of controlling all connected to a network, firewall is the only connection between network need to be protected with outside networks. Improving the speed of classifying and processing packets on firewall shall be highl...

A cross-sectional study was conducted in Muong Lat town (Thanh Hoa province, North Vietnam), following the confirmed diagnosis of trichinellosis in six patients from that town who had eaten hunted wild boar meat during the Vietnamese lunar year celebration. All inhabitants who declared to have eaten undercooked or raw wild boar meat at the celebrat...

Despite much success in reducing the burden of malaria in Vietnam, pockets of malaria persist and eliminating them remains an important development goal. In central Vietnam, insecticide-treated hammocks have recently been introduced to help counter the disease in the highly forested, mountainous areas, where other measures have so far been unsucces...

Objectives: To describe the occurrence of cysticercosis in patients living in rural areas of Northern Vietnam presenting clinical signs of neurocysticercosis. Methods: Serological antigen detection, reflecting current infection with viable larval stages of Taenia solium, was used to estimate the prevalence of active cysticercosis in this patient...

To evaluate the effects of Tai chi exercise on balance, sleep quality, and cognitive performance in community-dwelling elderly in Vinh city, Vietnam. A randomized controlled trial. One hundred two subjects were recruited. Subjects were divided randomly into two groups. The Tai chi group was assigned 6 months' Tai chi training. The control group was...

Objective Evaluating the effects of Tai Chi exercise on physical fitness, blood pressure, and perceived health in community-dwelling elderly. Design A randomized controlled trial. Setting Community-dwelling elderly in Vinh city, Vietnam. Participants Ninety-six community-dwelling participants aged 60 to 79 years (68.9 ± 5.1 years) were recruited...

This paper proposes a synchronization method for implementation of an OFDM system based on the TMS320C6416 DSP. The method is to meet the constraints of signal processing in real time conditions, and ensure the Quality of Services regarding the received signal quality. It is proven that the complexity of the proposed method is significantly reduced...

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This paper develops a general framework to study the economic impact of infectious diseases by integrating epidemiological dynamics into a continuous time neo-classical growth model. There is a two way interaction between the economy and the disease: the incidence of the disease affects labor supply and investment in health capital can affect the i...

Considering increasing reports on human infections by Plasmodium knowlesi in Southeast Asian countries, blood samples collected during two large cross-sectional malariometric surveys carried out in a forested area of central Vietnam in 2004 and 2005 were screened for this parasite. Blood samples collected at the 2004 survey and positive for Plasmod...

We prove the existence of competitive equilibrium and the smoothness of policy function in an optimal growth model with elastic labor supply by using a simple method. Our approach is based on the result of exis-tence of Lagrange multipliers and their representation as a summable sequence due to Le Van and Saglam [2004] to define the sequence of pri...

Space is the next frontier for mankind and utilization of space is human’s ultimate quest. Although we have been in the Space Age for more than half a century, the cost associated with developing a space system is still very high. First proposed by California Polytechnic State University almost 10 years ago, the idea of cubesat has caught the atten...

This paper analyzes the transitional dynamics in a model of economic growth with endogenous technological change and two alternative sources of energy: renewable and non-renewable resources. The conditions for the existence and saddle point property of the steady state are given. Finally, we present the estimation results on the data consisting of...

This paper deals with multiobjective programming problems with inequality, equality and set constraints involving Dini or Hadamard differentiable functions. A theorem of the alternative of Tucker type is established and from which Kuhn-Tucker necessary conditions for local Pareto minima with positive Lagrange multipliers associated with all the com...

In this paper, we establish theorems of the alternative for a system described by inequalities, equalities and an inclusion, which are generalizations of Tucker's classical theorem of the alternative, and develop Kuhn-Tucker necessary conditions for efficiency to mathematical programs in normed spaces involving inequality, equality and set constrai...

This paper deals with a multiobjective programming problem involving both equality constraints in infinite dimensional spaces. It is shown that some constraint qualifications together with a condition of interior points are sufficient conditions for the invexity of constraint maps with respect to the same scale map. Under a new constraint qualifica...

The development of thesaurus structure for implementation into integrated system of information resources (ISIR) was discussed. This universal thesaurus scheme can be used to represent any standard thesauri, whose structures correspond to the GOST or ISO standards. Two ways of thesaurus functioning - a thesaurus built in the information system and...

Gestures in collaborative environments can be conveyed by video, at the cost of high bandwidth and one window interface per user. Virtual actors allow low bit rate gesture transmission and display in a single virtual world for several users. We describe a prototype system for 3D-gesture acquisition in real time using a single camera and gesture res...

A variable-length shipments-orders mechanism, with application to industries in Canada. A model of the shipments-orders relation is developed which combines a fixed work lag and a variable wait lag. The wait lag is represented by a Pois- son distribution and the work lag by a polynomial function. This model allows the shape and length of the distri...

Résumé La vidéo peut être un support pour la communication gestuelle dans les environnements informatiques collaboratifs à distance, au prix d'une charge réseau importante et d'une interface complexe comportant une fenêtre par utilisateur. Des acteurs virtuels permettent de restituer à bas débit dans un monde virtuel les gestes de l'ensemble des ut...

This study employs a Logistic Smooth Transition Regression to model the impact of economic reforms in Vietnam from 1985 to 2006 in three economic areas: the agricultural sector, industrial sector and service sector. We examine the response of both GDP and labor productivity to the reforms in each of these sectors. While our results suggest that all...

We consider a general equilibrium model in asset markets with a countable set of states and expected risk averse utilities. The agents do not have the same beliefs. We use the methods in Le Van - Truong Xuan (JME, 2001) but one of their assumption which is crucial for obtaining their result cannot be accepted in our model when the number of states...

In recent years, Vietnam has reappeared in U.S. newspaper headlines. This time the country is cast as a new land of opportunity, one whose vast natural and human resources are certain to make it and all who invest in it rich. Only the U.S. trade embargo seems to stand in the way. But Vietnam's development depends on more than lifting the embargo an...

Photocopy of typescript. Thesis (M.S.)--California State University, Long Beach, 1992. Abstract preceding title page. Includes bibliographical references (leaves 81-82).

Many outside observers of the Eleventh Congress of the Communist Party of Vietnam (CPV) dismissed the results as "new wine, old bottle." There was no major change of leadership, and the same small circle of top leaders simply switched positions and will continue governing the country for the next five years. The CPV still "determinedly and resolute...