4,996 research outputs found
Sandy soils in south central coastal Vietnam: their origin, constraints and management
No full textIn Vietnam, sandy soils are distributed mainly in the coastal central provinces where they occupy 337,768 ha comprising 63 % of the nation’s sandy soils, and they are also important to regional economic growth where more than 10 million people are living i.e.14 % of the Vietnamese population. The sandy materials in the central coastal Vietnam originate from mostly in situ weathering of granite although aeolian sediments are parent materials for sandy soils also. Sandy soils have a wide range of limiting factors for agricultural production, including nutrient deficiencies, acidity, low water holding capacity and wind erosion risk (on coastal dunal sands). Although there are soil fertility constraints to the use of sandy soils in Vietnam, 79,076 ha has been utilized in agriculture. Developing integrated nutrient management practices are needed to improve soil physical, chemical and biological fertilities of sandy soils. For example, systematic use of farmyard manures, crop residues, green manures, and alley cropping need to be considered. Developing integrated nutrient management practices also need to address environmental considerations by matching nutrient applications to crop needs and amending soils to minimise nutrient losses to water. Developing new soil management technologies (such as use of biochar, slow release fertilisers and minimum tillage) is also important for sustainable management of sandy soils in Vietnam
Aporcella daklakensis Nguyen & Hoang & Chu & Peña-Santiago 2023, sp. n.
No full textAporcella daklakensis sp. n. Figures 1–3; Table 1. Material examined. Eleven females from two locations; in general, in good state of preservation.Published as part of Nguyen, Thi Anh Duong, Hoang, Ha, Chu, Hoang Ha & Peña-Santiago, Reyes, 2023, Description of Aporcella daklakensis sp. n. (Nematoda: Dorylaimida: Aporcelaimidae), associated with coffee plantations in Central Highland of Vietnam, pp. 427-434 in Zootaxa 5297 (3) on page 428, DOI: 10.11646/zootaxa.5297.3.7, http://zenodo.org/record/800521
hoang ha anh's Quick Files
No full textThe Quick Files feature was discontinued and it’s files were migrated into this Project on March 11, 2022. The file URL’s will still resolve properly, and the Quick Files logs are available in the Project’s Recent Activity
Heterogeneity in behavioural response to pricing policies in the transition from motorcycles to private cars in motorcycle-based societies
No full textPricing instruments are widely seen as an effective tool for reducing the travel demand for private vehicles. In contrast to developed countries, the design of pricing policies in certain developing countries is more challenging, owing to the mixed use of private cars and motorcycles. This study argues for the existence of a transitional group of motorcycle users who will switch to being car users. An investigation of the behavioural responses to a pricing policy from private car users and motorcycle users is implemented in Ho Chi Minh City, Vietnam. A propensity score-matching technique is used to identify the transitional group. The results regarding the mode choice models for various pricing policies show similar responses between the transitional motorcycle users and car users. Such characteristics of the transitional group imply that ignorance of travellers' heterogeneity may cause significant bias, especially when modelling pricing policies.This research was financed by the Special Research Fund of Hasselt University.
Financial support in data collection: Ho Chi Minh City Institute for Development Studies (HIDS)
Author contribution: The authors confirm contribution to the paper as follows: study concept and design: Hoang Thuy Linh, Nguyen Hoang Tung, Vu Anh Tuan, Muhammad Adnan, and Tom Bellemans; data preparation, analysis, and interpretation of results: Hoang Thuy Linh; draft manuscript preparation: Hoang Thuy Linh, Nguyen Hoang Tung, and Muhammad Adnan. All authors reviewed the results and approved the final version of the manuscript
Assessing the impact of traffic climate and risk-taking attitude on the risky riding behaviour of young motorcyclists in Vietnam
No full textThis research investigates the interrelationships between traffic climate perceptions, risk-taking attitudes, and motorcyclists' riding behaviours in Vietnam using the Driver Behaviour Questionnaire (DBQ) and Traffic Climate Scale (TCS). The study, conducted among young motorcyclists aged 18-24, explores how perceptions of traffic climate, characterised by functionality, external affective demands, and internal requirements, influence risk-taking attitudes and subsequent riding behaviours. The analysis reveals that external affective demands positively correlate with higher risk-taking attitudes, whereas internal requirements are inversely related. Increased risk- taking attitudes predict frequent riding errors, violations, and lapses. These findings underscore the complexity of factors contributing to hazardous riding behaviours and highlight the need for targeted interventions that address both individual attitudes and perceived traffic conditions to improve road safety. The study emphasises the critical role of traffic climate in shaping riding behaviours, providing essential insights for developing effective road safety strategies in developing countries.We express our sincere gratitude to the anonymous reviewers and the editors for their insightful and constructive feedback, which has significantly improved the quality of this research. This work was supported by a grant obtained from Wallonie-Bruxelles International (WBI) for the project 2.17 (Renforcement des compétences en matière de recherche, d’enseignement et de consultance dans le domaine de la logistique) and by the FNRS (National Fund for Scientic Research) in Belgium. We also acknowledge the ethical approval of the study by the University of Danang, by decision 3542/QD-DHDN
Induced currents into the human body by elf power systems: sensitivity to tissues properties
No full textRiding with distraction: Exploring the intention and behaviour of smartphone use while riding among motorcyclists in Vietnam
No full textThe pervasive use of smartphones has significantly contributed to distracted driving, a leading cause of road traffic accidents globally. This study investigates the behavioural intentions and patterns of smartphone use while riding among motorcyclists in Vietnam, integrating the Theory of Planned Behaviour (TPB) with the Stimuli-Organism-Response (SOR) framework to encompass factors such as riding exposure and time pressure. A questionnaire survey was conducted, gathering data from 1,051 young motorcyclists. Using Partial Least Squares Structural Equation Modelling (PLS-SEM), the study identifies high levels of smartphone engagement during riding, driven primarily by Perceived Behavioural Control (PBC), which exhibited a stronger influence on behaviour than Attitudes and Social Norms. Notably, time pressure significantly enhanced the intention to use smartphones, suggesting that riding under time constraints could exacerbate the risk of distracted riding incidents. The findings highlight critical implications for road safety interventions and policy formulation, emphasising the need for targeted educational programmes and stricter enforcement measures to mitigate smartphone-induced distractions among motorcyclists at a higher risk of traffic accidents. The study contributes to understanding distracted riding behaviours in motorcycle-dominant regions, providing a foundation for future research and preventive strategies.This work was supported by grant obtained from Wallonie-Bruxelles International (WBI), Belgium for the project 2.17 (Renforcement des compétences en matière de recherche, d’enseignement et de consultance dans le domaine de la logistique) and by the FNRS, Belgium fund supporting the sabbatical leave of Mario Cools
Exploring Factors Driving Customer Retention and Advocacy in Food Delivery Apps – Data from a Public University in Vietnam
No full textThe research period spanned from September 2022 to January 2023 and resulted in 346 usable responses. The findings offer fresh insights into the university students' use of FDAs, a transforming digital technology in the food and beverage industry. The data set holds value for service providers, SMEs, and sellers on these platforms to better understand their target audience and attract more users, particularly university students. Furthermore, the dataset provides a foundation for further comparative studies to be conducted at other universities or countries
Exploring Factors Driving Customer Retention and Advocacy in Food Delivery Apps – Data from a Public University in Vietnam
No full textThe research period spanned from September 2022 to January 2023 and resulted in 346 usable responses. The findings offer fresh insights into the university students' use of FDAs, a transforming digital technology in the food and beverage industry. The data set holds value for service providers, SMEs, and sellers on these platforms to better understand their target audience and attract more users, particularly university students. Furthermore, the dataset provides a foundation for further comparative studies to be conducted at other universities or countries
Testing two models of critical consciousness: an application of sociopolitical development theory and theory of planned behavior
No full textAlthough there is emerging literature exploring the psychological mechanisms associated with critical consciousness (e.g., Watts et al., 2011), we know very little about individuals’ actual activism behaviors. In this study, I built on the theory of planned behavior (TPB) and sociopolitical development theory (SPD) to test a model of critical consciousness among a community sample of 179 Asian American and White American adults. Participants completed an online survey about their social justice attitudes, perceived behavioral control, social norms, and social justice intention. They were also invited to sign two online petitions with social justice themes. Path analyses indicated that critical reflection of social inequality, subjective norms, and perceived behavioral control were uniquely and positively related to people’s intention to act for social justice causes. Intention to act, in turn, was positively related to the observed social justice behavior while controlling for past behavior. Findings suggested that the theory of planned behavior’s conceptualization was better supported in the White American adult sample, whereas the sociopolitical development theory’s conceptualization was a better fit for the Asian American sample. Limitations of the study and implications for future research were discussed.Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2019-08-01The student, Tuyet-Mai Hoang, accepted the attached license on 2017-07-03 at 10:34.The student, Tuyet-Mai Hoang, submitted this Thesis for approval on 2017-07-03 at 10:57.This Thesis was approved for publication on 2017-07-07 at 14:22.DSpace SAF Submission Ingestion Package generated from Vireo submission #11302 on 2017-09-29 at 10:46:22Made available in DSpace on 2017-09-29T17:45:34Z (GMT). No. of bitstreams: 2
HOANG-THESIS-2017.pdf: 1671717 bytes, checksum: bc910cafef42590873cb7af286514f8f (MD5)
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Previous issue date: 2017-07-07Embargo set by: Colleen Fallaw for item 103480
Lift date: 2019-09-29T17:48:06Z
Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD systemEmbargo set by: Seth Robbins for item 103480
Lift date: 2020-03-02T19:56:41Z
Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD systemEmbargo set by: Seth Robbins for item 103480
Lift date: 2020-03-02T19:59:52Z
Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD systemEmbargo set by: Seth Robbins for item 103480
Lift date: 2020-03-02T20:02:46Z
Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD systemU of I Only Restriction Lifted for Item 103480 on 2020-03-03T10:15:22Z
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