All Articles

In this paper, we restate some applications of logarithms in Richter scale, pH scale and
sound intensity level (Decibel scale).

In this paper, we consider the Dirichlet boundary problem for a nonlinear wave equation
of Kirchhoff-Carrier-Love type as follow


utt − B
?
∥u(t)∥2 , ∥ux(t)∥2

(uxx + uxxtt)
= f(x, t, u, ux, ut, uxt) +
Xp
i=1
εifi(x, t, u, ux, ut, uxt)
for 0 < x < 1, 0 < t < T,
u(0, t) = u(1, t) ...

In this paper, we study the Robin-Dirchlet problem (Pn) for a wave equation with the
term
1
n
Xn
i=1
u2( i−1
n , t), n ∈ N. First, for each n ∈ N, under suitable conditions, we prove
the local existence and uniqueness of the weak solution un of (Pn). Next, we prove that
the sequence of solutions ...

The report deals with the Robin problem for a nonlinear wave equation with viscoelastic
term. Under some suitable conditions, we establish a high-order iterative scheme and
then prove that the scheme converges to the weak solution of the original problem along
with the error estimate. This result extends the result in [9].

In this paper, we consider the Dirichlet problem for a wave equation of Kirchhoff-
Carrier type with a nonlinear viscoelastic term. It consists of two main parts. In Part
1, we establish existence and uniqueness of a weak solution by applying the Faedo-
Galerkin method and the standard arguments of density corresponding to ...

In the current work, we study a Cauchy problem for a time-fractional pseudo-parabolic
equation with a globally Lipschitz source term. We prove the unique existence of a mild
solution to the problem, by the common Banach fixed point theorem. This solution is
then verified that exists globally in time by Gr¨onwall’s inequality. Compare ...

In this work, we focus on investigating ill-posed problems (according to the definition
given by Hadamard) in the topic of its application. Specifically, we present some theories
about the properties of the ill-posed problem in image processing. By using discrete
Fourier transform and fast Fourier transform methods, we present several results on
image processing ...

This paper is devoted to the study of a Kirchhoff wave equation with a viscoelastic
term in an annular associated with homogeneous Dirichlet conditions. At first, by
applying the Faedo-Galerkin, we prove existence and uniqueness of the solution of the
problem considered. Next, by constructing Lyapunov functional, we establish a sufficient
condition such that ...

In this paper, the Neumann-Dirichlet boundary problem for a system of nonlinear viscoelastic
equations of Kirchhoff type with Balakrishnan-Taylor term is considered. At
first, a local existence is established by the linear approximation together with the Faedo-
Galerkin method. Then, by establishing several reasonable conditions and suitable energy
inequalities, the solution of the problem ...

In this paper, we consider the Robin-Dirichlet problem for a system of nonlinear pseudoparabolic
equations with viscoelastic term. By the Faedo-Galerkin method, we first prove
the existence and uniqueness of solution for the problem. Next, we give a sufficient condition
to get the global existence and decay of the weak solution. Finally, by ...

Abstract

Cultural relations between Vietnam and China, of course, need no further assertions. But this process of cultural relations, then requires further studies to see the diversity of this cultural relationship. We, in this report, present the cultural relationship between Vietnam and China through poems written on the topic of Zen ...

Selecting wastewater treatment technology is not an easy matter. In this study, TOPSIS and AHP methods are used to support decision-making in choosing a wastewater treatment alternative for Poong In Vina factory. A total of 9 criteria belonging to 3 groups of economic, social - technical and environmental issues were ...

subjects in many countries and the treatment of breeding waste has to be taken as a priority. Nowadays, biogas technology sets up and operates primarily to treat breeding waste. However, this technology formed a considerable amount of wastewater the effluent quality is still poor and the concentration of pollutants is ...

This study which entitles “Learners’ Attitudes towards the Project Works in promoting English learner autonomy: a Case Study at Foreign Trade University-Ho Chi Minh Campus” was conducted with the following objectives: (1) to investigate students’ attitudes towards the use of project works to enhance their autonomous learning in an English ...

This study aims to investigate students’ common errors in Vietnamese-English translation. For the objectives, 70 first-year students at Foreign Trade University – Ho Chi Minh campus, were invited to participate in this study. To identify students’ errors in Vietnamese-English translation, the participants were asked to complete five weekly assignments. The ...

This paper aims to identify the English-learning motivation of Thu Dau Mot University’s students. Based on the questionnaire, the data for analysis were collected from more than 100 students of different majors studying non-majored English at Thu Dau Mot University’s Foreign Language Center. The findings show that students have relatively ...

In this study, we examine students at Thu Dau Mot University specializing in Food Technology’s speaking and listening skills in English. We conducted a survey on 59 students majoring in Food Technology using the questionnaire approach. Students struggle to develop macro-English abilities like speaking and listening, as seen by their ...

As a response to global warming and climate change, climate change adaptation aims to lessen the susceptibility of social and biological systems to relatively abrupt change and so counteract the effects of global warming. Openness and cooperation are key tenets of an adaptation strategy; as a result, mechanisms for a ...

This paper aims to apply FMEA (Failure Mode and Effect Analysis) tool in the wood production process of Minh Duong Wood Company. In this study, the process evaluation indicators according to FMEA were analyzed such as failure severity - S (Severity value), failure frequency - O (Occurrence number), error detection ...

This article presents how to speculate, design and simulate a mechanical horse based on the point of view of the military man Khong Minh, a talented character in the work "Three Kingdoms" (author La Quan Trung). The behavior of this type of horse closely resembles that of a real horse. ...

The objective of this study was to determine iodine levels in soils, grains, and goitrogenic content of common grains across zones of Sokoto state, Nigeria using standard methods and reagents of analytical grade. Obtained data were subjected to descriptive and ANOVA statistics. The Western zone has highest iodine (29±0.01ppm), followed ...

Based on research methods such as methods such as data collection and processing, air quality index calculation methods, public health risk assessment methods to assess air quality and effects of substances on the health of people in Di An city. The data for the calculation are inherited from the environmental ...

The international cooperation environment is the issue affecting international cooperation relations, creating interactions between it and international cooperation relations. There are two types of international cooperation environment: the external environment and the internal environment. Based on the analysis of the international cooperation environment in Binh Duong over the past decade, ...

ABSTRACT
This paper analyzes the security performance of underlay cognitive energy-harvesting relay radio networks (UCEHRRN) through the Monter-Carlo simulation results. The results clarify the influence of critical operating parameters on the security performance of the system. Furthermore, the security capabilities of UCEHRRN have been compared with those of the live transmission ...

Over the past few years, there are many activities had negative impacts on the surface water of the Dong Nai river such as industry, agriculture, and service development activities; therefore river water quality is significantly relieved. This study was conducted to evaluate the effect of elements on the water quality ...

Through analysis of the DPSIR model, combined with research methods such as field surveys, and survey questionnaires, the author has given the following results: The amount of waste is increasing; Not paying attention to the classification at source, Solid waste collection is still limited; Environmental quality is degraded due to ...

Binh Duong is a province in the Southeast region. It has a long history of growth and numerous noteworthy historical and cultural values. This paper provides a summary of the cultural and historical significance of Binh Duong Province during the prehistoric, land exploration, and settlement phases. It discusses population, administrative ...

Heavy metals are the most dangerous substances in the environment, have caused deleterious effect not only to the environment but also to the public’s health. Different studies have demonstrated that plants have a high removal capacity for lead ions from pollution sources. However, these plant species were rather limited. Thus, ...

Binh Duong, a dynamic province in the Southern Key Economic Region in Vietnam, has a fast growing economy and strong economic restructuring towards industrialization and modernization, have affected many aspects of economy, culture, society and environment. This study analyzes the influence of economic restructuring on urban development in Binh Duong ...

This paper is devoted to the study of a nonlinear fractional differential equation with a weakly singular source in Banach space. Using Bielecki type norm, we show that the problem has a unique solution. Furthermore, we introduce a result of the new Ulam-Hyers type stability for the main equation.