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 topic. Finally, some illustrative examples are presented through algorithms running on Python software.

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 to previous works about the similar issuse, we approach in a way that does not require using weighted spaces. Although our approach share a similar spirit to previous studies, our method seems to be more precise and natural.

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 the regularity of initial conditions. In Part 2, we give a sufficient condition for the global existence and exponential decay of the weak solutions by defining a modified energy functional together with the technique of Lyapunov functional.

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 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 un of (Pn) converges strongly in appropriate spaces to the weak solution u of the problem (P), where (P) is defined by (Pn) by replacing 1 n Xn i=1 u2( i−1 n , t) by Z 1 0 u2(y, t)dy. The main tools used here are the linearization method together with the Faedo-Galerkin method and the weak compact method. We end the paper with a remark related to a similar problem.

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) = 0, u(x, 0) = ˜u0(x), ut(x, 0) = ˜u1(x), (1) where ˜u0, ˜u1, B, f, fi (i = 1, · · · , p) are given functions, ε1, · · · , εp are small parameters and ∥u(t)∥2 = Z 1 0 u2 (x, t) dx, ∥ux(t)∥2 = Z 1 0 u2 x (x, t) dx. First, a declaration of the existence and uniqueness of solutions provided by the linearly approximate technique and the Faedo-Galerkin method is presented. Then, by using Taylor’s expansion for the functions B, f, fi, i = 1, · · · , p, up to (N + 1)th order, we establish a high-order asymptotic expansion of solutions in the small parameters ε1, · · · , εp.

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

Enzymes are biodegradable catalysts naturally present in living organisms. Enzymes can accelerate biochemical reactions by reducing the activation energy, and they are not consumed during reaction processes. Numerous applications of enzymes have been developed in biotechnology, industry, medicine, pharmaceuticals, food processing, biofuels, and so on. In this study, we develop a mathematical model describing enzymatic reactions with a Ping-Pong mechanism and competitive substrate inhibition. In order to obtain insights into the model behaviors, we use Python software to obtain numerical solutions for the model. Some discussions on the numerical results is provided. Finally, we briefly discuss a potential application of the model and some future work.

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 structure, social structure, economic traits (agriculture, handicrafts, commerce), and social culture throughout the various eras (prehistory, settlement phase, Nguyen dynasty). The findings demonstrate that Binh Duong not only has a rich history with numerous economic and cultural assets, but also point to possible research avenues for safeguarding and advancing moral principles in the construction and development of Binh Duong province today and in the future.

Almajiri are students’ in an ancient Islamic system of teaching. This paper assesses food security, personal hygiene, living condition, and violence in Almajiri. Survey using questionnaire and analysed descriptive statistics, and x2 at p < 0.05 were used. Most schools were donated (66.7%), and minority (33.3%) were self-owned. Schools were built by zinc (33.3%), mud (33.3%), and modern (33.3%). There are urinals in all the schools (100.0%), overcrowding (100.0%), 66.7% have windows and doors, (33.3%) have no windows and doors. 66.% of the schools have mats for sitting, 33.3% have chairs. Risks found are: open defecation (33.3%), and nearby water (66.7%). Majority of students stay for 4 months before returning home (66.7%), and significant portion of them return after graduation (33.3%). Pertaining personal hygiene 66.7% of the students’ wear shoes, 33.3% didn’t wear; 66.7% have cleaned clothes, 33.3% dirty clothes, there was no water at (66.7%) of the schools, 33.3% have water. 66.7% wash hands after toilet, none wash hands before eating. On food security for Almajiri, 66.7% eat once, 33.3% eat twice. They eat Tuwo (33.3%) Gari, Tuwo (33.3%), and unspecified food (33.3%); source of food includes begging (33.3%), external labor (33.3%), and home (33.3%). Types of violence encountered are: weapon use (33.3%), fight (33.3%), and flogging (33.3%). Majority (66.7%) like western education, and (33.3%) replied no. All students are feeling their condition psychologically; some are at SS1 (33.3%), JSSI (33.3%), and (33.3%) never attend western school. Poor health determinants exist in Almajiri students in Sokoto.

With a favorable location and diverse natural and cultural resources, Phu Quoc city of Kien Giang province has immense potential for tourism development. Phu Quoc is one of the localities with the biggest number of tourist arrivals and the highest revenue from tourism in the Mekong Delta. However, due to the impact of the Covid-19 pandemic, Phu Quoc tourism faces many difficulties in implementing the pre-set plans. Using a systematic review of the literature to synthesize the information dealing with tourism resources, impacts of Covid-19 pandemic on tourism performance and recovery plans of local authorities, the article analyzes the potential and current status of tourism development of Phu Quoc. Interviews with researchers and travel agencies’ representatives also add some ideas to the proposals for the orientation of tourism development in the new context. Integration to regional and international market, promotion of regional interlinkage and travel demands and new trends of tourism are crucial factors recommended for the development of tourism on Phu Quoc island. Key words: Marine and island tourism, Phu Quoc tourism, Post-Covid-19 tourism

In this study, the author researches the numerical results of the comparison of synchronization speed of regular neural networks with unidirectional and bidirectional coupling. Each neuron is linearly coupled with the others and is represented by a reaction-diffusion system of FitzHugh-Nagumo type. The result shows that the necessary coupling strength for the synchronization in two cases decreases when the coupling number of neurons increases. In other words, the bigger the coupling number of neurons in the regular networks is, the easier the synchronization occurs. Moreover, synchronizing the regular networks with bidirectional coupling is easier than the one with unidirectional coupling over the same given number of neurons.

Plagiarism is a very common problem in many universities. A lot of students plagiarize unconsciously because they don't understand the concept. The study will clarify the concept of plagiarism, as well as ways for universities to help their students avoid the habit of plagiarism. The aim of this study is to explore Thu Dau Mot University Students Knowledge about the seriousness of Plagiarism; Find out the most common types of plagiarism committed by students; Analyzing and finding out the possible common reason a student unintentionally commits plagiarism. In terms of purposes of the study, to answer the research question and based on the background of previous studies, in this study, one hundred students in different majors - Freshman students to senior students are taken as samples. The results of this study showed that the majority of students are aware of plagiarism and the consequences of plagiarizing, plagiarism is fairly common on campus and students are aware of it. The study indicates that plagiarism does exist at Thu Dau Mot University and students are willing to take the risk of plagiarizing, regardless of knowing that it is unacceptable. It also confirms that plagiarism is common amongst students across all departments at Thu Dau Mot University, Binh Duong Province, Vietnam.

The aim of the study is to investigate the errors in writing of non- English major students at Thu Dau Mot University. This study focused on paragraphs because the researcher has found that diverse errors in students’ paragraphs and wants to improve their writing skill. Seventy-four English paragraphs were written by 74 non-English major students coming from different academic majors at Thu Dau Mot University. All of the errors in the paragraphs were identified, synthesized and classified into various categorizations. The findings of the study show that the most frequently committed errors were tense, spellings, singular/plural form, prepositions, word order, fragment. On the basis of these results, many recommendations and pedagogical implications were suggested to help EFL lecturers with some teaching strategies that will reduce problems regarding writing English paragraphs among English learners.

Ficus hispida L.f. (FH) is among the widely cultivated tree species in Asian regions. The aim of this work was to determine phenolic and flavonoid contents, antioxidant, in vitro anti-inflammatory activities of FH extracts prepared with methanol (ME), ethanol (ET) and ethyl acetate (EA). The extract obtained from ethyl acetate contained the highest total phenolic and flavonoid contents (92.75 +/- 5.14 mg GAE/g and 5.67 +/- 0.65 mg QE/g), followed by ME and ET. The capacity to scavenge ABTS free radical of the extracts followed the order: EA > ME > ET while their DPPH activity differed insignificantly. The inhibitory effect of EA and ME (IC¬50 = 362.84 +/- 29.05 and 386.95 +/- 11.10 ug/mL, respectively) were higher than that of ET. Correlation analysis showed a high positive correlation between total phenolic content and ABTS activity. The findings of the study would be useful for development of new nature-derived agents for prevention and treatment of diseases.

This report presents the process of conserving, restoring scientific works, as well as ensuring the method and principle of conservation. Besides, because there are many reasons, the restoration of the relic is not currently carried out in accordance with the current regulations and there are some mistakes in the conservation and restoration of the relic. Therefore, understanding the restoration process is the core scientific basis for proposing effective conservation projects and solutions. Moreover, the content of report provides more the materials, and scientific foundations for conservation and restoration of the relic as follows: - Understand the valuable aspects of the Ngo Mon relic; - Help conservationists grasp some methods to identify the relic including analysing history, and construction schedule of the work; analysing actual state (architecture, materials, fine arts...); analysing documentary photos; analysing similar works. - Support people who work in management, project planning, construction of the relics grasp the order, process, regime, and policy of the State when implementing a project to conserve and restore more professionalism.

This study deals with the stiffness design of geometrically nonlinear structures using topology optimization. Bi-directional Evolutionary Structures Optimization (BESO) is employed to implement the design process. The geometrically nonlinear behavior of the structures are modeled using a total Lagrangian finite element formulation and the equilibrium is found using a Newton-Raphson iterative scheme. The topology optimization of linear and nonlinear modeling are implemented. The sensitivity of the objective function is found with the adjoint method and the optimization problem is solved using BESO’s update method. Objective function of complementary work is evaluated. A special technique called the continuation method is applied to solve the instability of nonlinear structure optimization. ANSYS APDL is also used to do FEA of optimal topology to verify the effectiveness of geometrically nonlinear modelling. The results show that differences in stiffness of structures optimized using linear and nonlinear modelling is generally small but it can be large in some cases, especially structure highly involving buckling behaviour.

In recent years, society has been evolving rapidly, and contemporary education is being adapted to satisfy people's requirements in accordance with 4.0 trends and the industrial revolution.This gives birth to the definition of Smart University, the study of which seeks to identify the required components for constructing a smart learning environment. The research group analysed nationally and internationally advanced models, proposing a smart university model for Thu Dau Mot University (T-SMARTHS) with smart levels matching the phases established and developed at Thu Dau Mot University.

Glioma is a deadly tumor that accounts for the majority of malignancies of the brain and central nervous system. Currently, applying biomarkers and combining with clinical treatments in the diagnosis and prognosis of Glioma is the optimal trend. Among the effective biomarkers, microRNA has emerged as a novel, efficient biomarker. In this study, we used data from the Kyoto Encyclopedia of Genome and Gene Routes Database (KEGG) and bioinformatics tools for functional prediction and annotation of two Glioma-associated molecules (miR-6780a-5p and miR-6754-3p). The result indicated that 361 genes relating with two molecules miR-6780a-5p and miR-6754-3p. In which, miR-6780a-5p interacts with 198 genes and miR-6754-3p interacts with 166 genes. PPI analysis (protein-protein interaction analysis) and functional enrichment analysis revealed that target molecules of two miRNAs (miR-6780a-5p, miR-6754-3p) belong to cancer signaling pathways such as MAPK (Mitogen-activated protein kinase) and WNT (Wingless-related integration site). In addition, two miRNAs (miR-6780a-5p and miR-6754-3p) affect not only Glioma but also regulation in many other cancers such as pancreatic, thyroid, and endometrial cancer. Briefly, the result has clarified the role of (miR-6780a-5p, miR-6754-3p) in regulating signaling pathway of Glioma, thereby evaluating the interaction between miRNAs, target genes and target signaling pathways, and also supporting for the selection of potential biomarkers in Glioma diagnosis

This article presents the results of a study on the current application of Project-based learning (PBL) in the teaching of English productive skills to students at the Foreign Trade University - Ho Chi Minh City Campus and how students can improve them. The research also provides insights into the expectations of students and entrepreneurs on that matter. The research group used the 5-point Likert scale in a questionnaire to collect data from students and interviewed FTU - HCMC’s English teachers and entrepreneurs to give further suggestions. Wilcoxon signed-rank test was used to analyze whether or not there is a significant difference in students’ English productive skills before and after using PBL in English language learning. This study found a significant difference in speaking skills of FTU - HCMC students before and after participating in PBL activities. The students improved their comprehension, range and the ability to deliver their ideas to the target reader for writing skills. However, no difference was found in their content, cohesion, and accuracy. Interviewed teachers and entrepreneurs supported the implementation of PBL in schools. Overall, PBL is encouraged in the settings of higher education institutions.

Vietnamese immigrants in the United States encounter a variety of acculturation issues that affect them as individuals, families, and as members of their communities. It is evidenced in the literature that low-socio status immigrants suffered from those acculturation challenges. However, there is scant research on how acculturation affects high-socio status immigrants in general and Vietnamese American immigrants in particular. To better understand how high-educated Vietnamese families coped with acculturation in the United States, this research used semi-structured interviews to examine the acculturation issues they encountered and the techniques they utilized to overcome those issues. Four well-educated participants were interviewed one-on-one for 20-30 minutes each by Google Meet in Vietnamese whenever they were available. The interviews were transcribed using unfocused transcription, and the data was analyzed using grounded theory technique. Results showed that high-educated Vietnamese immigrants in the United States face three major acculturation challenges: orientation, the necessity of better economic and self-esteem needs. However, women seemed to be under more acculturative stress owing to their lower levels of English proficiency and work satisfaction, according to the findings. In terms of coping methods, the husbands use integration acculturation tactics to deal with their issues. Separation methods were adopted by the women at various periods in their life, despite the fact that they are eager to become fully integrated members of American culture. They are unable to do so due to a lack of urgency and lack of access to cultural integration.

Premarital sex is one of the issues that female migrant workers currently face. This increases the risk of sexual and reproductive health issues among this vulnerable group. The article's goal is to comprehend and explain the attitude of female migrant workers regarding premarital sex while also analyzing the factors that influence their attitudes toward this issue. The theories of social control and migration are the foundation for this objective. The combined approach used in this paper collects quantitative data from 420 female migrant workers and qualitative data from seven female migrant workers who participated in in-depth interviews. According to research findings, female migrant workers are considerably more agreeable to premarital sex if both are voluntary, but they do not feel ready to discuss premarital sex with those around them. The level of education and length of residence are factors that affect how female migrant workers feel about the premarital sex concern. In order to enhance their autonomy and reduce risky sexual behaviors, we can thus propose that female migrant workers, especially those with a residence length of more than five years, should have greater reproductive health capacity, including reproductive health knowledge and skills.

Recognized as a smart city, Binh Duong's smart city development strategy also includes the development of automated agriculture, typically large-scale livestock farming. A sustainable urban development will not be able to ignore the factor of providing food for urban and regional people. Phu Giao district - Binh Duong province is one of the leading districts in livestock farming, especially concentrated pig farming. The agricultural industry, pigs breeding, is one of the strengths of the district, besides the cultivation of short and long-term industrial crops such as rubber, cashew, Ho Tieu... Livestock is a very old profession of the Vietnamese people in Phu Giao district as well as in Binh Duong province. The contribution of livestock production to the socio-economic face of the district cannot be denied. However, animal husbandry activities, besides the economic values, also cause some consequences to the natural environment such as soil and water pollution, noise, odors in the air, etc. Hence, we decided to do the research of "Application of ISO 14001:2015 international standards in determination of environmental aspects at market hog farm with semiautomatic technology farm size 12,000 pigs per year in Phu Giao district, Binh Duong province" (TCVN ISO, 2015). This is a large-scale pig farm with modern semi-automatic technology equipment. We expect to find out environmental issues in the most detailed and specific way so that the owner can overcome the above environmental problems, rest assured to raise livestock and develop more expansion later. We conducted a review of the areas on the farm, evaluated the activities in each area, from which we found out the environmental problems through the material flow diagram (Phạm Thị Hồng Cẩm, 2020). Next, through the multi-criteria method (Phạm Thị Hồng Cẩm, 2020) we calculated the score and found the most significant environmental aspects (most environmental risk). The research results will be a general picture to provide farm owners with an intuitive and easy-to-understand view for suitable solutions. Developing farm economy along with environmental protection towards sustainable development of livestock agriculture.

In this paper, we establish compactness and continuous dependence on parameters for solution-set of the second order differential inclusion including self-adjoint operator in the form \begin{align*} \left\{ \begin{gathered} \frac{\partial^2}{\partial t^2} u(t,x) +2\mathcal{A} \frac{\partial}{\partial t}u(t,x)+\mathcal{A}^{2} u(t,x) \in F(t,u(t),\mu),\,\, \hfill (t,x)\in [0,T)\times\Omega \\ u(0,x)=\frac{\partial }{\partial t}u(0,x)=0, \,\, \hfill x \in \Omega, \\ %u(T,x) = h(x), \,\, \hfill x\in\Omega, \end{gathered}\right. %\label{MainProblem} \end{align*} where $\mathcal A$ is a self-adjoint operator. We use the spectral theory on Hilbert spaces to obtain formulation for mild solutions. Using the mild solution formula together with a measure of non-compactness with values in an ordered space, we construct useful bounds for solution operators. Then, we establish necessarily upper semi-continuous and condensing settings, which mainly help to obtain the global existence of mild solutions and the compactness of the mild solution set. Finally, we provide a brief discussion on the continuous dependence of the solution-set on parameter $\mu$.