Danang City Research Articles

The role of social workers in road traffic accident prevention communication for secondary school students in Danang City

Based on the analysis of the current status of road traffic accidents in Danang city and secondary schools in the area, the author analyzes the role of social workers in road traffic accident prevention communication for secondary school students. Most secondary school students are aware of the role of social workers in communication to prevent road traffic accidents and have made suggestions to improve the effectiveness of social work communication in preventing road traffic accidents for secondary school students in the study area.

Above Ground Biomass and Carbon Sequestration of Urban Green Spaces in Danang City, Vietnam

Green space in cities is an essential component of the urban environment. Different forms of urban green spaces, with varying populations, plant communities, and roles, offer varying urban ecological advantages. Using the i-Tree Eco model, this study examined the structural characteristics of urban green trees and calculated the biomass storage capacity and carbon sequestration in urban green spaces in Da Nang City. The results revealed a considerable diversity of species composition among 7,513 trees belonging to 42 species of 20 families studied in four types of green spaces, with Terminalia catappa, Cyrtostachys renda, and Roystonea regia dominating. The average Shannon biodiversity index was 2.9, with the institution having the highest at 2.6 and the park having the lowest at 2.2. The total leaf biomass per hectare was 588.0 kg/ha, and the carbon sequestration rate was 2,845.30 kg/ha. Ficus subpisocarpa was the species with the highest value for these two advantages, and the park was the green space with the highest benefit in terms of biomass and carbon sequestration.

Overweight and Obesity in 10-Year-Old Children in Danang City, Vietnam

Aims This study aimed to determine the prevalence and associated factors of childhood overweight and obesity among 10-year-old schoolchildren in Hoavang, Danang City. Methods From January to May 2023, a cross-sectional study was carried out utilizing a structured self-administered questionnaire to collect data. The height and weight measurements of 518 children were recorded. Body mass index for age Z scores (BAZs) were employed to classify children’s nutritional status following the World Health Organization criteria. Subsequently, the data were analyzed using SPSS version 25. Results The study encompassed a cohort of 518 students, 110 (21.2%) classified as overweight and 64 (12.4%) as obese. Significantly, the adjusted odds ratio (aOR) demonstrated that male subjects exhibited a 3-fold higher risk of overweight and obesity than female subjects (aOR = 2.9, P < .0001). Skipping breakfast and confectionery/sweet food consumption were defined, demonstrating significant associations with elevated odds of being overweight and obese. Conclusion The findings revealed that approximately one-third of primary schoolchildren in Hoavang, Danang City, were affected by overweight and obesity. This alarming prevalence underscores the urgent need for interventions.

A Ability to advise and support students in educational activities of primary school teachers

Background: This study investigates the competencies of primary school teachers in Da Nang city, with a specific focus on their abilities to advise and support students in educational activities. Purpose: This research examines the relationship between teachers' identification of psychological issues, consulting and support skills, and educational topic development to understand and improve student guidance skills. The research conducted in this study involved 312 primary school teachers from 12 primary schools in Danang City, Vietnam. Results: The assessment reveals commendable strengths in teachers’ identification of students’ difficulties in learning activities, with a robust mean score of 3.34. Additionally, proficiency is noted in questioning (M = 3.17, SD = 0.815), observation (M = 3.23, SD = 0.832), and the development of educational topics (M = 3.23). However, the study also illuminates areas for improvement, including communication and self-awareness challenges, empathy skills, instructional and feedback proficiency, and the creation and maintenance of psychological counseling records. Acknowledging the limitations of self-assessment and the regional specificity of the study, the results contribute valuable insights for educators, administrators, and policymakers. Implications: The research not only informs targeted interventions to enhance teacher effectiveness but also adds to the ongoing discussions on effective teaching practices and student support in primary education. By recognizing strengths and areas for improvement, this study serves as a foundation for fostering continuous improvement and enhancing the overall quality of teaching and support for students in primary education in Da Nang City, Vietnam.

Building fungi identification key for the main fungi of the ganodermataceae (donk) donk. in Son Tra, Danang city

The Ganodermataceae garners considerable attention owing to its medicinal properties and ecological significance. Although numerous authors have focused on studying the Ganodermataceae in Central Vietnam, specific research on the Son Tra in Danang City still needs to be conducted. This study collected from various locations across the Son Tra. Subsequently, prompt processing and microscopic analysis of morphological and structural features were conducted. Based on these analyses, an identification key was developed to classify the mushrooms at the genus and species levels. The identification process revealed 38 species belonging to the Ganodermataceae, encompassing three genera (Ganoderma, Amauroderma, and Haddowia). Among them, the genus Ganoderma exhibited the highest species richness with 29 identified species, followed by Amauroderma with 8 species, and Haddowia with 1 species. Furthermore, the authors described certain biological characteristics of the common species and compared the diversity of Ganodermataceae in Vietnam and neighboring regions.

Characteristics of airborne particles in stone quarrying areas: Human exposure assessment and mitigation

This investigation aims to assess the levels of human exposure to airborne particulate matter (PM) in various locations of a natural stone quarry for the first time based on simultaneous measurements of both PM mass and number concentrations (PMC and PNC). A quarry located in Danang city, Vietnam, considered to be a “hotspot” of air pollution in the city, was selected for detailed investigations. Both PMC and PNC were found to be significantly higher (1.2–6.0 times) within the quarry compared to surrounding areas. Mechanical activities during mining, notably crushing, screening, hauling, and loading stones, contributed to increased emissions of PM in the coarser mode (1–10 μm) compared to the accumulation mode (0.1–1 μm) and thus increased deposition of PM1-10 in the human upper respiratory tract. In contrast, combustion activities, especially the diesel engine exhaust from various machines and vehicles used in the quarry, resulted in increased emissions of small particles in the accumulation mode that dominated the PNC and in their deposition in the lower respiratory tract. Simultaneous measurements of PNC and PMC revealed that the PM counts were strongly associated with PM deposition in the alveolar region (accounting for ≈ 76% of total PNC of particles less than 10 μm, N10), while the PM mass concentration was a better indicator of the deposition of PM in the head airway region (≈92% of total PMC of PM10). Overall, this study demonstrates the significance of measuring both PNC and PMC to assess PM exposure levels, regional respiratory doses, and potential health effects associated with human exposure to PM generated from stone quarrying activities. The novelty of this work is the integration of real-time mass and number concentrations of PM over the size range from 20 nm to 10 μm to provide insights into respiratory deposited doses of size-fractionated PM among quarry workers.

Sustainable public space for a livable city: A study of steel structure design solution applied in Danang city, Vietnam

Public space is essential for the sustainable growth of all types of cities. It significantly contributes to public mental health balance and brings a more vibrant and livable image of city life. A more invested in comprehensive design at the beginning of any master plan can result in huge potential. The research aim is to examine public space principal design and exploits with a case study method in Danang city, Vietnam. The result of the applied method proposes a public space design solution with a stainless steel structure, which is considered a flexible material for its aesthetic value in addition to economic and environmental considerations that can be used in public space design. This research delivers a potential design solution with secure public space rights, public use balancing traffic and pedestrians, and safety.

The relationships among social media communication, brand equity and satisfaction in a tourism destination: the case of Danang city, Vietnam

PurposeThis paper aims to examine the role of social media communication, tourist satisfaction and destination brand equity components in enhancing destination brand equity based on the Stimulus – Organism – Response (S-O-R) theory.Design/methodology/approachThe conceptual model and research hypotheses were assessed using covariance-based structural equation modeling (SEM). An online survey was used to collect data from 369 domestic tourists who had traveled to Danang and knew about content related to Danang generated by either DMOs or other users on social media.FindingsExcept for the effect of DMO-generated social media communication on tourist satisfaction and the impact of destination brand awareness on destination brand loyalty, the findings confirmed the sequential causal relationships between research concepts based on the S-O-R model.Research limitations/implicationsFuture research should explore the proposed model based on comparisons of different nationalities to better understand the impact of cultural factors.Practical implicationsDMOs should associate social media with their marketing strategies to enhance destination brand equity, using cutting-edge technologies to create content and update information in a significant way to make communications by DMOs more effective. The findings especially suggest that UGC plays a vital role in improving brand equity dimensions, so DMOs could exploit UGC to engage existing customers and build relationships with potential customers. This research provides guidance for DMOs to improve their brand equity based on social media.Originality/valueThis study has contributed to the destination marketing literature by applying the S-O-R theory to propose a pathway for effectively increasing destination brand equity and highlight the importance of social media communication as a driver to achieve a hierarchical relationship between destination brand equity components and tourist satisfaction from stimulus to organism (e.g. cognition to affect).

Current status of primary dental caries among 2 - 4 year-old children in some kindergartens in Ngu Hanh Son district, Danang city in 2022

Background: Early childhood caries is defined as the presence of one or more carious lesions, tooth loss or decay on any primary tooth in a child ≤ 71 months of age. This study aims to investigate the state of primary dental caries and its relationship with some factors in 2 - 4 year old kindergarten children in Ngu Hanh Son district, Da Nang city in 2022. Methods: A cross-sectional descriptive study was conducted on 423 children aged 2 - 4 years old in 2 kindergartens, in Ngu Hanh Son district, Da Nang city, during March-April 2022. The state of caries was assessed according to the dmf index, distributed by age, gender and related factors. Results: There were 75.9% with dmf index was 6.15 ± 5.80, which increased with age, no difference between two genders and most common in the maxillary middle incisors and the mandibular molars. Risk factors are associated with rates of caries, while protective factors did not significantly affect the rate of caries. Conclusion: The state of primary dental caries in Ngu Hanh Son district, Da Nang city is still high. Protective factors did not significantly affect the rate of caries. Therefore, it is necessary to consider implementing early and more appropriate preventive measures for childhood caries. Key words: primary dental caries, kindergarten children, dmf index, risk factor, protective factor.

Destination social responsibility drives destination brand loyalty: a case study of domestic tourists in Danang city, Vietnam

PurposeThis study aims to identify how perceived destination social responsibility (DSR) drives destination brand loyalty through a jointly and independently mediated mechanism of cognitive and affective components (e.g. tourist-destination identification, cognitive image, affective image and tourist satisfaction) and to examine the moderating role of individual-level collectivist values in linking perceived DSR and tourist behaviors.Design/methodology/approachAn online survey is conducted to collect the data of 351 domestic tourists visiting an urban tourism destination (e.g. Danang City) in Vietnam. A serial multiple mediation model and moderation model were examined by applying covariance-based structural equation modeling.FindingsThis research’s results highlight the leading factors of perceived DSR in the process of forming destination brand loyalty and confirm the vital role of the intermediary mechanism of tourists' cognition and affect during this process. The chain of causal relationships DSR → TDI → CI → AI → TS → DBL confirms the role of perceived DSR as an essential prerequisite factor of DBL, creating a close connection to tourists' cognition and affect and contributing to improving destination brand loyalty. Individual-level collectivist values were found to positively moderate the links between perceived DSR and tourist-destination identification, affective image and destination brand loyalty.Research limitations/implicationsFuture research would provide insights into the links between perceived DSR and tourist behaviors by considering moderating variables (e.g. cultural distance and tourist types) and uncovering specific insights into each destination stakeholder's DSR activities.Originality/valueA new integrated model of destination brand loyalty development is proposed to explore a new path for destination brand loyalty formation through cognitive, affective and cognitive-affective pathways. This moderating stream of examining individual-level collectivist values can make a significant contribution to the extant tourism literature by promoting a more positive tourist perception of DSR, thereby increasing tourists' knowledge, beliefs and emotions and enhancing destination brand loyalty.

Characteristics of hydrochemical and d2H, d18O stable isotopic composition to study saltwater intrusion in coastal aquifers in Danang city

The situation of saltwater intrusion in coastal aquifers in Da Nang city is greatly affected by urban planning, exploitation and water resources use. This article presents research data on hydrogeochemical characteristics and stable isotope composition, thereby determining the origin of groundwater in aquifers then study on saltwater intrusion. The relationship between δ2H and δ18O during rainy season shows that the water in the Holocene aquifer in Da Nang coastal area has isotopic composition similar to regional meteorological water and does not mix with seawater, the main source recharges to the aquifer is rainwater. During dry season, d18O in groundwater is low but d2H is enriched by recharged rainwater from higher attitude area and also affected by exchange with leakage water from landfills. The saline water in this aquifer tends to be washed by rainwater leading to the phenomenon of paleness and the area of salt water in the aquifer is gradually shrinking. These research results are very important in propose a solution for ground water extraction plan and control saltwater intrusion for groundwater

The database management framework for combined sewerage system of Phu Loc river basin in Danang city by GIS

Nowadays, Geographic Information Systems (GIS) applications have provided tools to integrate information, visualize scenarios, present powerful ideas, and develop effective solutions like never before so that it supports strategic decision making. Based on the advantages of GIS applications, the main goal of database management framework is simulation and visualization combined sewerage system and water quality data of Phu Loc river, Da Nang city via QGIS software. Although the length of the river is only 1.9 km, the Phu Loc river was discharge point of drainage basin in the northwest area of Da Nang city with a total area of more than 3500 hectars, which included 5 urban lakes, the municipal wastewater treatment plant with capacity over 40000 m3/d. After transform and organize data from other source to QGIS, the researchers created a database management framework for sewerage system with relation model for each group of data. Based on process digitalization data of water quality, QGIS software should presented type of digital map of Phuloc basin area with construction of combined sewerage system for basin area and water quality index for river and urban lakes.

The ability of reusing municipal treated water for irrigation the landscaping in Vietnam. The research in constructed wetland in municipal wastewater treatment plant, Danang city

All around the world, the constructed wetland is a variation for for reusing treated water by irrigation the landscaping. Based on the synthesis and metabolism of different plant species, nutrients, especially nitrogen and phosphorus, in wastewater has been removed. Therefore, the article evaluates the ability of reusing municipal treated water from combined sewerage system for technology constructed wetland. Based on building and operating model wetland in municipal wastewater treatment plant for 2 months, adaptability of 2 selected plant species in model include Canna generalis and Portulaca grandiflora has been determined. At first, the experiment evaluates of the growth and development of plants. After that, based on operated model with with hydraulic rention time was 48 hours and hydraulic loading rate is approximately 0.2 m3/m2/d, the efficiency transformation of Nitrogen in range 30 – 40% with Canna generalis and 20 – 30% with Portulaca grandiflora. Moreover, the preformance removing ortho phosphorus of both models in range 40 – 60%. Sumerize, the synthesis and metabolism of nutrients by these plants will reduce the loading of biological reactor in wastewater treatment plants.

Behavioral Intention Towards Online Food Purchasing After the Social Distancing Period of Covid-19 in Danang City, Vietnam

Social distancing due to Covid-19 exposes consumers to abnormal situations and forces them to passively change their buying behaviors, leading to partly shifting to online shopping channel choices. This study was conducted right in the social distancing period in Danang City, from August 20th to September 15th, 2020. By developing a conceptual framework integrating predicting intentions models TAM, TRA, TPB with VAB model (Homer and Kahle, 1988), and Perceived Risks, this study recognizes an ongoing trend in online purchasing of Vietnam consumers during- and post-Covid 19. Together with a witnessed upward trend in online food purchasing behaviors during the social distancing period, online markets also anticipate a positive growth of buying intentions after social distancing. These behavioral intentions are affected not only by the original anchors from TAM, TRA, TPB models but also by personal values and perceived risks.

Factors affecting employees’ satisfaction with training – Case study: The commercial banks in Danang city

Factors affecting employees’ satisfaction with training – Case study: The commercial banks in Danang city

Quantification of waste in schools: A case study in Danang City, Vietnam

BACKGROUND AND AIM Waste is a major problem that can affect the environment and health; especially in developing countries where there is often a lack of an appropriate system for waste treatment. Understanding the current situation of waste, its common type and amount are important to develop appropriate strategies for waste control, especially in a school-based setting. This study has been conducted to identify common types of waste that are disposed in schools and quantify such waste. METHODS This study used an audit method to identify the common types of waste and quantify such waste in Da Nang city in 2021. RESULTS There were four schools with a total number of 3064 students were participated in this study. The average total volume of waste that schools discharge in a day is 460kg (accounting for 7542 litres of storage volume); in which, organic waste has the largest volume of 261kg (57% of total volume) accounting for 2262 litres (30% of total volume); non-recyclable waste weights 175kg (38% of the total volume) with a maximum volume of 4524 litres (60% of the total volume); recyclable waste has a weight of only 22kg (5% of total volume) accounting for 719 litres (10% of total volume); The remaining types of waste are insignificant. This study also showed the presence of a large number of plastic bags (2128 pieces), multi-layer packaging (2036 pieces), milk cartons (1047 boxes), straws (772 pieces), plastic bottles (670 bottles), foam boxes (531 pieces), plastic spoons (400 pieces), polypropylene plastic cups (327 pieces) in the total waste produced in one day in these schools. CONCLUSIONS Schools are emitting a large amount of waste, significantly plastic waste. Intervention programs in the school-based setting are needed to reduce the amount of waste toward ensuring health for children and protecting the environment.

Factors Influencing English Language Training Centres Choice Among Parents in Danang City

Foreign language learning has been in high demand among today’s young people. Current language training goes beyond traditional school classes and takes place in foreign language centers, where expat instructors collaborate with Vietnamese teachers. The acquisition of new languages, including English, has therefore been effectively promoted. The purpose of this study is to uncover the factors that affect parent decisions regarding selecting an English center within Danang City, with the goal of proposing performance improvement solutions for local enterprises operating in the field.

Factors Affecting the Implementation of Environmental Management Accounting: A Case Study in Manufacturing Enterprises in Danang City

Sustainable development is an inevitable development trend of modern society, that is, a development that can meet the needs of the present without affecting the ability of future generations to meet their own needs. Therefore, in the 70s, environmental management accounting (EMA) has increasingly received the attention of authorities, enterprises, and researchers because this is a means for enterprises to balance business management and environmental sustainability. Thus, this study surveyed 321 chief accountants and managers working for 200 manufacturing enterprises in Da Nang, Vietnam. The study aims to determine the factors affecting EMA implementation and measure the influence of the factors on the implementation of EMA in manufacturing enterprises in Da Nang. This research uses a combination of qualitative research methods to identify influencing factors and quantitative research to measure the influence of factors on EMA implementation. Research results show five factors affecting EMA implementation: technology level, enterprise characteristics; performance pressure; accounting staff qualifications, and managers' awareness. Research on EMA in Vietnam is relatively new and has not been studied much. At the same time, there is currently no research on EMA in manufacturing enterprises in Da Nang city. Therefore, the study also contributes to the theoretical basis of the factors affecting EMA implementation.

Sustainable Tourism through Green Event Perspectives in Danang City: Challenges and Solutions

While there has been much research on non-green events in creating massive ecological footprints, including high use of energy, water, food and natural resources, relatively little research has been conducted on the green event’s role in achieving sustainable tourism. The capacity, resources, innovation and engaging a range of key stakeholders, various ways in which events have been considered and operationed as green ones. The current paper sought to explore contemporary challenges to put forward the argument that Danang’s tourism industry acknowledges the importance of the green events. From secondary data sources, the paper concludes with an analysis of future research that needs to be associated with the green event management model to formulate and implement tourism policies in sustainable tourism development.

Distribution and occurrence of microplastics in wastewater treatment plants

Microplastic pollution is an alarming problem into aquatic environment. Wastewater treatment plants (WWTPs) with applied technologies are strictly interested in the technical challenges with budget calculations and sustainable development without contaminants. WWTPs are suspected as potential sources discharging microplastics (MPs) into the environment. This study investigated the distribution and occurrence of MPs in influent and effluent of three typical industrial wastewater treatment plants (WWTPs) named HoaCam WWTP (HC WWTP), DaNang WWTP (DN WWTP), and HoaKhanh WWTP (HK WWTP) in Danang city, Vietnam. The results showed that the abundance of MPs total is 183–443 particles/L and 138–340 particles/L in the influent and the effluent. The average MPs removal efficiency obtained 25.5%, 21.8% and 25.3% at HC, DN and HK of three WWTPs, respectively. Hence, the average loading capacity of MPs discharged to recipient sources is 3.8 × 10 7 , 8.3 × 10 7 and 1.5 × 10 9 particles per day in the HC, DN, HK WWTPs, respectively. The majority of MPs identified in this study included a profile of size, shape type, color and chemical compositions of MPs. The sizes of MPs highly varied from 1.6 to 5000 μ m with the abundant MPs types of fiber and fragment in both the influent and the effluent. In addition, the colors of MPs such as yellow, white, blue and black are presented. Using Fourier Transform Infrared spectroscopy (FTIR), the main polymer compositions of MPs included polyethylene terephthalate (PET), polyethylene (PE), nylon and polyvinyl chloride (PVC) were determined in three WWTPs. • WWTPs were considered as potential sources discharging MPs into the aquatic environment. • The abundance of MPs in the influent is lightly higher than that in the effluent of three WWTPs. • The fibber and fragment shapes in both the influent and the effluent of WWTPs were dominant. • Main polymer compositions of microplastics were polyethylene terephthalate (PET), polyethylene (PE), nylon and polyvinyl chloride (PVC) in WWTPs.