Journal of Science and Development Economic

On the stability of set optimization problems via upper set less order relations

2025-11-21T02:20:20+07:00

This paper aims to establish stability conditions, in the Painlevé–Kuratowski sense, for solution sets of set optimization problems under perturbations in both the constraint set and the objective mapping. By relaxing the assumptions of continuity and compactness of the objective mapping, we investigated external stability for weakly efficient and efficient solutions. Moreover, we employed the dominance property of set optimization problems under these conditions to analyze internal stability for efficient solutions. Our results represent a new contribution to the field.

The impact of student support service quality based on AUN-QA on student satisfaction and the role of brand image: A study at Tay Do University

2025-11-21T03:45:36+07:00

This study focuses on evaluating the impact of support service quality on student satisfaction at Tay Do University, while also examining the mediating role of brand image in this relationship. The theoretical framework is grounded in Social Exchange Theory, the Triple Bottom Line model, and the AUN-QA assessment standards (version 4.0). Data were collected from over 800 students majoring in Economics and Business Administration, utilizing the Partial Least Squares Structural Equation Modeling (PLS-SEM) method for analysis. The findings reveal that support service quality has a positive influence on student satisfaction, with brand image serving as a significant mediator that strengthens students' attachment to the university. These results offer practical implications for university administrators and the Faculty of Economics, emphasizing the need to enhance support services and invest in brand development. Such efforts not only improve student satisfaction but also increase the university’s competitiveness in student recruitment and elevate the overall quality of education.

Feasibility study and performance evaluation of quiet-revolution/GB wind turbines in urban lighting applications

2025-11-21T03:48:14+07:00

Amidst escalating energy costs, the financial burden on municipal budgets for public lighting systems has become particularly heavy. This has propelled the need for the search and implementation of sustainable energy-saving solutions. In this study, we focused on the potential application of the Quiet-Revolution/GB (Gorlov) wind turbines as a promising solution for providing renewable energy to public lighting poles. Specifically, we designed and developed a lighting pole system with a 50W capacity, incorporating the Gorlov wind turbine, optimized for efficient operation even at low wind speeds. The turbine was designed with three blades, each with a twist angle of 64.1 degrees, a height of 1.5 m, and a radius of 0.5 m, aimed at achieving the highest efficiency. Through testing, we found that the turbine could operate on its own at wind speeds as low as 2.5 m/s, producing a 12V output and 50W power at wind speeds of 6 m/s and above, while maintaining a low noise level, highlighting the broad application potential of this solution in urban lighting. This study opens a new direction in the application of wind energy in public lighting systems, contributing to the reduction of energy costs and enhancing the sustainability of urban infrastructure.

Improving the legal framework on working time and rest periods to accommodate the demands of Industry 4.0 integration

2025-11-21T04:04:28+07:00

Our country’s economy has gone through different periods of development, becoming more progressive and modern, in which one factor that plays a dominant role throughout and has contributed significantly to its success is the source of energy, human resources. At any stage, workers always play an extremely important role in the development of the economy. To do so, we must ensure the rights of workers and motivate them to work to create high-quality products and stable productivity. However, human labor power is limited, so workers have the right to rest reasonably and scientifically. Given the current trend of industrial development in the 4.0 era, appropriate of working hours and rest times for workers is also an issue worthy of attention. On that basis, the article focuses on analyzing legal regulations on working hours and rest hours of workers, thereby pointing out unreasonable points and proposing perfect solutions.

Research on the job adaptability of public relations graduates from Nam Can Tho University in the context of integration and the digital age – employers' perspective

2025-11-21T04:08:03+07:00

In the era of rapid digital transformation and global integration, work adaptability has become a critical competency for young professionals, especially in dynamic fields such as Public Relations (PR). This study investigates the factors influencing the work adaptability of PR graduates from Nam Can Tho University. Utilizing a mixed-methods approach, including in-depth interviews and quantitative surveys with 100 employers and 140 graduates, the research identifies three key factors: core professional competencies (β = 0.509), adaptability mindset (β = 0.286), and career self-development capacity (β = 0.345). Employers affirm that while graduates possess solid theoretical knowledge and positive attitudes, gaps remain in practical skills and responsiveness to real-world challenges. The study concludes that training quality, learning motivation, and institutional support are crucial in improving graduates’ adaptability. Based on the findings, five policy recommendations are proposed: curriculum modernization aligned with industry demands, development of soft skills, stronger industry-academic collaboration, digital tools for personalized learning, and enhanced feedback mechanisms. These solutions aim to equip students with the agility and competencies needed to thrive in the evolving job market.

The assessment of gastrointestinal and cardiovascular risks and the rational use of non-steroidal anti-inflammatory drugs in outpatient treatment at Nam Can Tho University Hospital in 2024

2025-11-21T04:09:44+07:00

This study aims to assess the gastrointestinal and cardiovascular risks and the rational use of non-steroidal anti-inflammatory drugs in outpatient treatment. A descriptive cross-sectional study was conducted using 253 outpatient prescriptions of patients who were treated at the Nam Can Tho University from July to December 2024. Patients aged ≥ 18 years and having used at least one type of NSAIDs were included in the study. The data collection process involved analyzing prescription and recording demographic characteristics, types of NSAIDs used, as well as gastrointestinal and cardiovascular risks and the rational use of NSAIDs. Quebec Medical Council guideline was applied to assess the gastrointestinal and cardiovascular risks, which were classified into three categories: low, moderate, and high. Patients who are under 60 years old accounted for a higher proportion and were mostly men from Can Tho city. Musculoskeletal and connective tissue diseases were the most common group (58.89%). Meloxicam (45.85%) and Etoricoxib (26.88%) were most commonly prescribed. 34.39% of patients were prescribed proton pump inhibitors. Low gastrointestinal risk (64.03%) and low to moderate cardiovascular risk (90.91%) were the highest. NSAIDs are reasonably prescribed for both gastrointestinal and cardiovascular risks, accounting for 75%. Patients mostly have low gastrointestinal risk and low cardiovascular risk. The proportion of NSAIDs prescribed appropriately is higher than those prescribed inappropriately.

Survey of botanical characteristics and preliminary analysis of chemical composition of Ficus pumila

2025-11-21T04:11:33+07:00

The scientific name of the Ficus pumila L. belonging to the Moraceae family. Parts of the plant are used to treat many diseases such as rheumatism, anemia, dysentery, hemorrhoids, menstrual disorders, hepatitis and high blood pressure. Up to now, in Vietnam, there have been very few studies on the botany as well as the active ingredients in the extract of this plant. This is a medicinal herb with great potential, so the project aims to survey the botanical characteristics and preliminary analysis of the chemical composition of the Ficus pumila plant to provide additional data for identification and differentiation from other plant species, and to orient the groups of compounds contained in the stem and leaves. The whole plant of the plant was collected in An Khanh ward, Can Tho City, analyzed, described the morphological and anatomical characteristics, medicinal powder and preliminary chemical composition survey by the improved Ciuley method. The results showed the anatomical characteristics, medicinal powder characteristics and preliminary chemical composition in the stem and leaf parts. From the results of botanical characteristics, it helps to support the accurate identification of medicinal materials when used and orient the groups of compounds in the fruit, stem and leaf parts of the plant.

Survey of botanical characteristics and preliminary analysis of chemical composition of Abutilon indicum

2025-11-21T04:14:29+07:00

Abutilon indicum belonging to the Malvaceae family, is a medicinal plant widely used in traditional medicine for the treatment of dysentery, fever, allergies, diuresis, toothache, back pain, inflammation, diabetes, bronchitis, diarrhea, gonorrhea, helminthiasis, rheumatism, numbness, bone and joint pain, and detoxification. The leaves are also crushed and applied topically to treat boils and snake bites. However, research on A. indicum in Vietnam is limited. Therefore, to provide scientific evidence, to advance a broader research scope that previous studies have restricted, focusing on individual parts such as roots, stems, and leaves of A. indicum, and to promote the value of this species, the entire A. indicum plant, collected in Vinh Long province, was analyzed. Morphological, anatomical, and powdered drug characteristics were described, and preliminary chemical composition was surveyed using the modified Ciuley method. The results revealed the anatomical characteristics, powdered drug characteristics, and preliminary chemical composition in the roots, stems, and leaves. These morphological, anatomical, powdered drug and preliminary chemical composition findings support accurate identification and quality control of the medicinal material. Additionally, they provide a valuable reference for further research.

Community perception of river tourism development on the Petagas river, Malaysia – Lessons for Can Tho City

2025-11-21T04:16:01+07:00

Unpolluted rivers with protected riverbanks provide significant opportunities for tourism development. In recent decades, there has been growing interest in rivers as tourism resources. Globally, the demand for river cruises and water sports has increased rapidly, along with the development of riverbanks for tourism purposes such as accommodation, dining, and shopping. However, the attitudes and perceptions of the local community play a crucial role in developing a successful river tourism resource. The aim of this study is to investigate your perceptions as a local resident regarding the development of river tourism on the Petagas River in Kota Kinabalu, Sabah, Malaysia. Semi-structured interviews were conducted with 79 riverside residents to understand your views on the development of river tourism, assess your potential participation in such activities, and identify issues you believe could hinder tourism development. The findings show that while you generally support tourism development, you also recognize the need to restore the river ecosystem and to change several current uses of the river.

Biocompatible thin films based on ZIF-8 and applying for Tetracycline delivery

2025-11-21T04:18:04+07:00

New classes of thin films: ZIF-8, mesoZIF-8 and TiO₂@ZIF-8 grated on biocompatible polymers including chitosan (CS) and polyetilene glycol (PEG) were fabricated. The films were carried out in green conditions to apply for drug delivery study. The combination of two polymers PEG and CS enhanced the bonding with the ZIF-8 framework since many function groups have formed in a slightly acidic solution. The resulting of materials were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), which revealed the ZIF-cooporated on the polymers well. For the first time, the examination of tetracycline (TC) delivery was studied on these hybrid thin films. The TC delivery was showed in high effective by using the film compared to several materials.

Research on the production process of breadfruit (Artocarpus altilis) steamed bun

2025-11-21T04:20:08+07:00

The research was conducted to establish the process of making sake dumplings through investigating influencing factors such as sake ratio (25 - 40%), yeast ratio (0.5 - 2g), sugar ratio (8 - 14%) added to the dough and incubation time (40 - 70 minutes) to the quality of sake dumplings. Study results showed that the added ratio of 35% sake, 1.5% yeast, and 12% sugar would improve the fermentation process and created a harmonious sweetness for dumpling products. The appropriate incubation time was 60 minutes for the product to have good quality.

Factors affecting the processing of chicken breast and green chili (Capsicumn annuum L.) Vietnamese steamed sausage (cha lua)

2025-11-21T04:21:57+07:00

The main purpose of this research is to develop a process for producing green bird's eye chili chicken breast patties from new ingredients, contributing to diversifying patty products on the market. This study was carried out by investigating the following factors: the influence of grinding time (2 - 5 minutes) on raw chicken breast; sodium polyphosphate ratio (0 - 0.45%); sugar (1 - 3%) and gelatin (0 - 2%) ratio and steaming time (30 - 45 minutes) affect product quality. Research results showed that the appropriate grinding time was 3 minutes. The ratio of sodium polyphosphate was 0.45%, sugar was 2% and gelatin was 1% which would create a product with a stable structure. The steaming time to ensure microbiological standards was 40 minutes.

Foam-mat drying technique and some initial research results on local foods

2025-11-21T04:23:42+07:00

Dehydration of foods is not simply a preservation technique in the present era, rather an important food processing operation which has many benefits in addition to enhancement of shelf life of foods. There are various methods of drying foods and most of them are unique in their own way. Present review is about Foam-mat drying technique for fruits and vegetables to develop good quality powders. Foam-mat drying is a new drying technique for foods which are highly heat sensitive and very sticky to dry. By using this drying technique product is dried in a very short time with minimum quality changes. Fruits and vegetables pastes were mixed with different foaming agents (egg albumin, soy protein, GMS etc.) and foam stabilizers (carboxymethyl cellulose etc.) in different concentration to introduce stable foams. Foams were dried in trays by application of hot air, microwave, freeze-drying and milled to develop free flowing powders. This is a simple technique and initially showed good results in drying liquid foods obtained from various local fruit and vegetable materials (jackfruit, red-fleshed dragon fruit, melon, etc.).

The role of lactic acid bacteria in food processing and improving bioactive compounds in the human body

2025-11-21T04:25:37+07:00

Clinical studies have shown that selecting lactic acid-fermented products helped to enhance resistance to intestinal pathogens, stimulate the immune system, and help maintain a balanced intestinal microflora. Some advantages of traditional fermentation were labor-intensive, integrated with rural life, and was a familiar fermentation technology. In addition, lactic acid fermentation was less expensive, and the value of fermented foods was enhanced in trade. From these perspectives, research on new fermentation technologies should be given more attention to the social and economic factors in developing countries.

Digital transformation in logistics: lessons learned for the Mekong Delta region towards sustainable development

2025-11-21T04:28:19+07:00

Digital transformation in logistics has become an inevitable trend in the context of globalization and Industry 4.0. The research aims to analyze lessons learned from various countries and propose lessons for the Mekong Delta region towards sustainable development. Based on the analysis results, the lessons include: Improving the legal framework for digital transformation in logistics; supporting capital for digital transformation activities in the logistics industry; enhancing investment in synchronized and modern infrastructure; applying information technology; supporting enterprises in adopting new technological solutions in the logistics industry; developing high-quality human resources in the logistics sector; promoting green logistics development.

Green logistics and green supply chain management research: a bibliometric analysis based on Scopus database

2025-11-21T04:31:46+07:00

Green logistics and green supply chain management have garnered widespread attention from numerous researchers, with a steadily increasing number of publications. This study conducted a comprehensive bibliometric analysis using the VOSviewer tool on green logistics and green supply chain management research from 2003 to 2024, based on the Scopus database. By utilizing bibliometric analysis tools, the study evaluated trends, influential authors, organizations, and countries in this field. With 694 publications selected for analysis, the results reveal developments and research directions such as barriers and drivers; green human resource performance and management; the Dematel method and green supply chain practices; environmental management and green production; and the circular economy and green logistics.

Analysis of the development of Warehouse Execution Systems (WES) in warehouse management

2025-11-21T04:34:37+07:00

Warehouse Execution System – WES is a software developed and built on the foundation of existing software (warehouse control system – WCS and warehouse management system – WMS) and the need to supply goods of warehouses according to customer requirements with a large number of orders but still ensuring tight delivery time. WES was born with a number of development factors such as automation and flexibility, optimizing resources, avoiding congestion. In the future, WES will be developed and supplemented with a number of features to solve more practical requirements of automated distribution centers.

Promoting green logistics development in Can Tho City in the context of Industrial Revolution 4.0

2025-11-21T04:37:02+07:00

Green logistics development is not only a global trend to address environmental issues alongside economic development goals but also aims for sustainable development and environmental protection. Therefore, Can Tho City, as the central hub of the Mekong Delta region, needs to take the lead in developing green logistics towards sustainable development goals. To address this issue, Can Tho City needs to implement the following comprehensive solutions: developing green infrastructure, greening transportation activities, applying Industry 4.0 technologies in logistics, greening warehousing activities, greening reverse logistics activities, and greening logistics activities within enterprises.

Application of blockchain technology in the development of agricultural supply chains in Can Tho City

2025-11-21T04:39:20+07:00

In recent years, blockchain technology has garnered significant attention from businesses and researchers due to its prominence. Blockchain is being widely used in logistics activities such as traceability of goods, digitization, reducing intermediaries in the supply chain, enhancing data security for integrated information sharing, and smart contracts. This research was conducted to examine the application of blockchain technology in the development of agrifood supply chains in Can Tho City. The study employs a qualitative research method to gather data from various sources, including domestic and international books, journals, and reports from relevant governmental agencies. Based on the analysis results, the study proposes several solutions to promote the application of blockchain technology in the development of agricultural supply chains in Can Tho, such as enhancing the capacity of stakeholders in the supply chain, further disseminating the benefits of blockchain technology, building infrastructure, strengthening cooperation among stakeholders, or implementing additional financial support policies.