المؤلفون: Dong Cong Trinh, Anh Tuan Mac, Khanh Giap Dang, Huong Thanh Nguyen, Hoc Thai Nguyen, Thanh Dang Bui

المصدر: AgriEngineering, Vol 6, Iss 1, Pp 302-317 (2024)

مصطلحات موضوعية: rice leaf diseases, blast leaf, leaf folder, brown spot, YOLOv8, Agriculture (General), S1-972, Engineering (General). Civil engineering (General), TA1-2040

الوصف: Early detection of plant leaf diseases is a major necessity for controlling the spread of infections and enhancing the quality of food crops. Recently, plant disease detection based on deep learning approaches has achieved better performance than current state-of-the-art methods. Hence, this paper utilized a convolutional neural network (CNN) to improve rice leaf disease detection efficiency. We present a modified YOLOv8, which replaces the original Box Loss function by our proposed combination of EIoU loss and α-IoU loss in order to improve the performance of the rice leaf disease detection system. A two-stage approach is proposed to achieve a high accuracy of rice leaf disease identification based on AI (artificial intelligence) algorithms. In the first stage, the images of rice leaf diseases in the field are automatically collected. Afterward, these image data are separated into blast leaf, leaf folder, and brown spot sets, respectively. In the second stage, after training the YOLOv8 model on our proposed image dataset, the trained model is deployed on IoT devices to detect and identify rice leaf diseases. In order to assess the performance of the proposed approach, a comparative study between our proposed method and the methods using YOLOv7 and YOLOv5 is conducted. The experimental results demonstrate that the accuracy of our proposed model in this research has reached up to 89.9% on the dataset of 3175 images with 2608 images for training, 326 images for validation, and 241 images for testing. It demonstrates that our proposed approach achieves a higher accuracy rate than existing approaches.

وصف الملف: electronic resource

العلاقة: https://www.mdpi.com/2624-7402/6/1/18Test; https://doaj.org/toc/2624-7402Test

الوصول الحر: https://doaj.org/article/ca56621185fb46e39d9990d69fd4bf09Test

المؤلفون: Kotaro Imamura, Thuy Thi Thu Tran, Huong Thanh Nguyen, Natsu Sasaki, Kazuto Kuribayashi, Asuka Sakuraya, Thu Minh Bui, Anh Quoc Nguyen, Quynh Thuy Nguyen, Nga Thi Nguyen, Kien Trung Nguyen, Giang Thi Huong Nguyen, Xuyen Thi Ngoc Tran, Tien Quang Truong, Melvyn Weibin Zhang, Harry Minas, Yuki Sekiya, Kazuhiro Watanabe, Akizumi Tsutsumi, Norito Kawakami

المصدر: Scientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)

مصطلحات موضوعية: Medicine, Science

الوصف: Abstract There are growing concerns on stress among nurses in low- and middle-income countries (LMICs) in South-East Asia. It is important to improve mental health among nurses in these countries. The objective of this study was to examine the efficacy of two types of newly developed smartphone-based stress management programs in improving depressive and anxiety symptoms among hospital nurses in Vietnam. This study was a three-arm (including two intervention groups and one control group) randomized trial. Participants were recruited from nurses in a large general hospital in Hanoi, Vietnam. Two types (free-choice and fixed sequential order) of smartphone-based stress management programs were developed. Participants were randomly allocated to Program A (a free-choice, multimodule stress management), Program B (a fixed-order, internet cognitive behavioral therapy, iCBT), or a control group (treatment as usual). The depressive and anxiety symptoms were measured by using the Depression Anxiety and Stress Scales at baseline, 3-, and 7-month follow-up surveys. 951 participants were randomly allocated to each of the three groups. Program B showed a statistically significant effect on improving depressive symptoms at 3-month (p = 0.048), but not at 7-month (p = 0.92); Cohen’s d was − 0.18 (95% CI − 0.34 to − 0.02) and 0.03 (95% CI − 1.00 to 1.05), respectively. Program A failed to show a significant intervention effect on any of the outcomes at 3- or 7-month follow-up (p > 0.05). Despite the small effect size, the present fixed-order iCBT program seems effective in improving depression of hospital nurses in Vietnam. A public health impact of the intervention can be scalable, when considering its accessibility and minimal cost. Trial registration number: The study protocol is registered at the UMIN Clinical Trials Registry (UMINCTR; ID = UMIN000033139). Registered date of the protocol is 1st Jul. 2018. https://upload.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000037796Test

وصف الملف: electronic resource

العلاقة: https://doaj.org/toc/2045-2322Test

الوصول الحر: https://doaj.org/article/5da746a76dc044348494ae0ee4fe415bTest

المؤلفون: Monica Cahyaning Ratri, Albertus Ivan Brilian, Agustina Setiawati, Huong Thanh Nguyen, Veasna Soum, Kwanwoo Shin

المصدر: Advanced NanoBiomed Research, Vol 1, Iss 5, Pp n/a-n/a (2021)

مصطلحات موضوعية: biofabrication, cell responses, hierarchical tissues, tissue engineering, Biotechnology, TP248.13-248.65, Medical technology, R855-855.5

الوصف: As part of regenerative medicine, artificial, hierarchical tissue engineering is a favorable approach to satisfy the needs of patients for new tissues and organs to replace those with defects caused by age, disease, or trauma or to correct congenital disabilities. However, the application of tissue engineering faces critical issues, such as the biocompatibility of the fabricated tissues and organs, the scaffolding, the complex biomechanical processes within cells, and the regulation of cell biology. Although fabrication strategies, including the traditional bioprinting, photolithography, and organ‐on‐a‐chip methods, as well as combinations of fabrication processes, face many challenges, they are methods that can be used in hierarchical tissue engineering. The strategic approach to synthetic, hierarchical tissue engineering is to use a combination of several technologies incorporating material science, cell biology, additive manufacturing (AM), on‐a‐chip strategies, and biomechanics. Herein, in a review, the current materials and biofabrication strategies of various artificial hierarchical tissues are discussed based on the level of tissue complexity from nano to macrosize and the adaptive interactions between cells and the scaffolding surrounding the incorporated cells.

وصف الملف: electronic resource

العلاقة: https://doaj.org/toc/2699-9307Test

الوصول الحر: https://doaj.org/article/a31c86b1fa5e44edaced3b2c0ca1f2a1Test

المؤلفون: Ha Thi Hai Le, Nam Tran, Marilyn A. Campbell, Michelle L. Gatton, Huong Thanh Nguyen, Michael P. Dunne

المصدر: International Journal of Mental Health Systems, Vol 13, Iss 1, Pp 1-10 (2019)

مصطلحات موضوعية: Bullying, Victimisation, Mental health, Depression, Psychological distress, Adolescents, Neurosciences. Biological psychiatry. Neuropsychiatry, RC321-571

الوصف: Abstract Background The significant psychosocial harms from bullying among adolescents create major challenges for mental health promotion programs and services in schools. While the negative consequences of bullying victimisation are well known, to date there is scarce empirical analysis of inverse associations, in which mental health problems make children more vulnerable to bullying victimisation and perpetration. Based on a short-term longitudinal study among adolescents in Vietnam, this study examined reciprocal associations between children’s depressive symptoms, psychological distress, suicidal ideation and bullying victimisation experiences (i.e., victims or bully-victims). Methods Secondary and high school students (n = 1167; age range: 11–16 years old; 55% female) in urban areas in northern Vietnam completed two self-administered questionnaires, 6-months apart in the academic year 2014–2015. Measures estimated bullying victimisation and perpetration in the past 6 months, depressive symptoms, psychological distress, and suicidal ideation. A cross-lagged analysis was performed to test the reciprocal associations. Results About one-third of students in the sample were involved as victims, bullies or bully-victims at both times, with more males than females reporting these experiences. Females reported a higher level of depressive symptoms than males at Time 1 but not at Time 2. After adjusting for outcome variables and other covariates measured at Time 1, nine of 12 cross-lagged associations across three models were statistically significant, with different patterns for females and males. There were reciprocal associations between bullying victimisation and mental health problems. Bullying victimisation was shown as an independent predictor of subsequent mental health problems; in turn, mental health problems preceded students’ experience of becoming victims or bully-victims. Females with mental health problems were more likely to be victims; whereas similarly distressed males were vulnerable to both being bullied and being perpetrators. Conclusion This study is the first of its kind in Vietnam and in the Southeast Asian region to examine reciprocal associations between bullying victimisation and mental health problems among adolescents. Anti-bullying intervention and prevention programs and school-based mental health promotion programs should be integrated and be sensitive to gender differences in order to maximise their impact.

وصف الملف: electronic resource

العلاقة: http://link.springer.com/article/10.1186/s13033-019-0291-xTest; https://doaj.org/toc/1752-4458Test

الوصول الحر: https://doaj.org/article/c3e27da210964921ad38dd72a8f495faTest

المؤلفون: Fran Baum, Jennie Popay, Toni Delany-Crowe, Toby Freeman, Connie Musolino, Carlos Alvarez-Dardet, Vinya Ariyaratne, Kedar Baral, Paulin Basinga, Mary Bassett, David M. Bishai, Mickey Chopra, Sharon Friel, Elsa Giugliani, Hideki Hashimoto, James Macinko, Martin McKee, Huong Thanh Nguyen, Nikki Schaay, Orielle Solar, Sundararaman Thiagarajan, David Sanders

المصدر: International Journal for Equity in Health, Vol 17, Iss 1, Pp 1-5 (2018)

مصطلحات موضوعية: Life expectancy, Health equity, Social determinants of health, Politics of health, Gender equity, Civil society, Public aspects of medicine, RA1-1270

الوصف: Abstract Background Life expectancy initially improves rapidly with economic development but then tails off. Yet, at any level of economic development, some countries do better, and some worse, than expected – they either punch above or below their weight. Why this is the case has been previously researched but no full explanation of the complexity of this phenomenon is available. New research network In order to advance understanding, the newly formed Punching Above Their Weight Research Network has developed a model to frame future research. It provides for consideration of the following influences within a country: political and institutional context and history; economic and social policies; scope for democratic participation; extent of health promoting policies affecting socio-economic inequities; gender roles and power dynamics; the extent of civil society activity and disease burdens. Conclusion Further research using this framework has considerable potential to advance effective policies to advance health and equity.

وصف الملف: electronic resource

العلاقة: http://link.springer.com/article/10.1186/s12939-018-0832-yTest; https://doaj.org/toc/1475-9276Test

الوصول الحر: https://doaj.org/article/7ce2ed8791744a84a59f448e7e270a7cTest

المؤلفون: Norito Kawakami, Thuy Thi Thu Tran, Kazuhiro Watanabe, Kotaro Imamura, Huong Thanh Nguyen, Natsu Sasaki, Kazuto Kuribayashi, Asuka Sakuraya, Quynh Thuy Nguyen, Nga Thi Nguyen, Thu Minh Bui, Giang Thi Huong Nguyen, Harry Minas, Akizumi Tsutsumi

المصدر: PLoS ONE, Vol 15, Iss 5, p e0233119 (2020)

مصطلحات موضوعية: Medicine, Science

الوصف: The present study investigated the internal consistency reliability, construct validity, and item response characteristics of a newly developed Vietnamese version of the Kessler 6 (K6) scale among hospital nurses in Hanoi, Vietnam. The K6 was translated into the Vietnamese language following a standard procedure. A survey was conducted of nurses in a large general hospital in Hanoi, Vietnam, using a questionnaire including the Vietnamese K6, other scales (DASS21, health-related QOL, self-rated health, and psychosocial work environment), and questions about demographic variables. Internal consistency reliability (Cronbach's alpha coefficient) was calculated. A confirmatory factor analysis was conducted. Eleven hypotheses were tested (as Pearson's correlations with the K6) to assess the scale's construct validity. Item response theory (IRT) analysis was conducted to identify the item response characteristics. The Cronbach's alpha coefficient was 0.864. The explanatory and confirmatory factor analyses indicated a one-factor structure. Most hypotheses tested for construct validity were supported. IRT analysis indicated that response categories were located in order according to severity. K6 provided reliable information regarding higher levels of psychological distress. The findings suggest that the Vietnamese version of the K6 is a reliable and valid instrument to measure psychological distress among hospital nurses in Vietnam.

وصف الملف: electronic resource

العلاقة: https://doaj.org/toc/1932-6203Test

الوصول الحر: https://doaj.org/article/421ac5258a2e40bd8f01f32663205c46Test

المؤلفون: Loan Minh Do, Viveca Larsson, Toan Khanh Tran, Huong Thanh Nguyen, Bo Eriksson, Henry Ascher

المصدر: Global Health Action, Vol 9, Iss 0, Pp 1-11 (2016)

مصطلحات موضوعية: childhood overweight, mothers’ conceptions, preschool children, qualitative study, Vietnam, Public aspects of medicine, RA1-1270

الوصف: Background: Childhood overweight and obesity is a new and emerging problem in Vietnam. The so far observed prevalence increases have pointed to the need for public health intervention strategies with parents as crucial resources for change. Objective: The aim of this study was to understand mothers’ conceptions of childhood overweight. Design: Four focus group discussions were conducted with a total of 33 mothers of preschool children, 4–6 years old, living in urban and rural districts of Hanoi, Vietnam. The discussions were audio taped and transcribed verbatim. The obtained data were analyzed using the principles of phenomenography. Results: Four main categories with 13 subcategories emerged in the process of analysis. The first category, called ‘Concept of overweight’, contained mothers’ views on childhood overweight. A major concern was the negative aspects of overweight such as impaired social interaction and health problems. The second category, ‘Identification of overweight’, described the ways mothers use to recognize overweight in children: own experience, growth chart, and public or health care system's information. The third category, ‘Causes of overweight’, showed mothers’ understanding of factors possibly contributing to overweight development: unhealthy food and lifestyle, genetic susceptibility, parent's lack of knowledge, and limited time to take care of children as well as economic improvement. The fourth category, ‘Management of overweight’, described the ways mothers use to manage a child's weight problem: control of their food intake, increasing their physical activity, and encouraging their child self-control. However, they find such strategies difficult to implement and their intentions are sometimes challenged by the child's grandparents. Conclusions: The study gives an understanding of the mothers’ conceptions of four important and practically useful aspects of overweight in children. The findings highlight the roles of media and the health care system in enhancing a social awareness of the problem and the need for prevention. Growth charts need to be used more regularly and consciously in child health care for early detection of children at risk and as a tool for information to parents. When designing intervention programs, the entire extended families, especially grandparents and their roles, need to be considered.

وصف الملف: electronic resource

العلاقة: http://www.globalhealthaction.net/index.php/gha/article/view/30215/pdf_229Test; https://doaj.org/toc/1654-9880Test

الوصول الحر: https://doaj.org/article/37f0a90d8fff446cb9e6820b9272d69cTest

المؤلفون: Agustina Setiawati, Huong Thanh Nguyen, Yeongheon Jung, Kwanwoo Shin

المصدر: International Neurourology Journal, Vol 22, Iss Suppl 2, Pp S66-75 (2018)

مصطلحات موضوعية: Extracellular matrix, Tissue regeneration, Versatile extracellular matrix, Urology, Diseases of the genitourinary system. Urology, RC870-923

الوصف: Native and artificial extracellular matrices (ECMs) have been widely applied in biomedical fields as one of the most effective components in tissue regeneration. In particular, ECM-based drugs are expected to be applied to treat diseases in organs relevant to urology, because tissue regeneration is particularly important for preventing the recurrence of these diseases. Native ECMs provide a complex in vivo architecture and native physical and mechanical properties that support high biocompatibility. However, the applications of native ECMs are limited due to their tissue-specificity and chemical complexity. Artificial ECMs have been fabricated in an attempt to create a broadly applicable scaffold by using controllable components and a uniform formulation. On the other hands, artificial ECMs fail to mimic the properties of a native ECM; consequently, their applications in tissues are also limited. For that reason, the design of a versatile, hybrid ECM that can be universally applied to various tissues is an emerging area of interest in the biomedical field.

وصف الملف: electronic resource

العلاقة: http://www.einj.org/upload/pdf/inj-1836154-077.pdfTest; https://doaj.org/toc/2093-4777Test; https://doaj.org/toc/2093-6931Test

الوصول الحر: https://doaj.org/article/2906eb0291884d729ec60aa02c1795f8Test

المؤلفون: Minh Thi Hong Le, Thach Duc Tran, Sara Holton, Huong Thanh Nguyen, Rory Wolfe, Jane Fisher

المصدر: PLoS ONE, Vol 12, Iss 7, p e0180557 (2017)

مصطلحات موضوعية: Medicine, Science

الوصف: To assess the internal consistency, latent structure and convergent validity of the Depression, Anxiety and Stress Scale-21 (DASS-21) among adolescents in Vietnam.An anonymous, self-completed questionnaire was conducted among 1,745 high school students in Hanoi, Vietnam between October, 2013 and January, 2014. Confirmatory factor analyses were performed to assess the latent structure of the DASS-21. Factorial invariance between girls and boys was examined. Cronbach alphas and correlation coefficients between DASS-21 factor scores and the domain scores of the Duke Health Profile Adolescent Vietnamese validated version (ADHP-V) were calculated to assess DASS-21 internal consistency and convergent validity.A total of 1,606/ 1,745 (92.6%) students returned the questionnaire. Of those, 1,387 students provided complete DASS-21 data. The scale demonstrated adequate internal consistency (Cronbach α: 0.761 to 0.906). A four-factor model showed the best fit to the data. Items loaded significantly on a common general distress factor, the depression, and the anxiety factors, but few on the stress factor (p

وصف الملف: electronic resource

العلاقة: http://europepmc.org/articles/PMC5516980?pdf=renderTest; https://doaj.org/toc/1932-6203Test

الوصول الحر: https://doaj.org/article/8c36296819f04c3ea79061d3c01c6354Test

المؤلفون: Huong Thanh Nguyen, Michael P Dunne, Anh Vu Le

المصدر: Bulletin of the World Health Organization, Vol 88, Iss 1, Pp 22-30 (2010)

مصطلحات موضوعية: Public aspects of medicine, RA1-1270

الوصف: OBJECTIVE: To examine the prevalence of multiple types of maltreatment (MTM), potentially confounding factors and associations with depression, anxiety and self-esteem among adolescents in Viet Nam. METHODS: In 2006 we conducted a cross-sectional survey of 2591 students (aged 12-18 years; 52.1% female) from randomly-selected classes in eight secondary schools in urban (Hanoi) and rural (Hai Duong) areas of northern Viet Nam (response rate, 94.7%). Sequential multiple regression analyses were performed to estimate the relative influence of individual, family and social characteristics and of eight types of maltreatment, including physical, emotional and sexual abuse and physical or emotional neglect, on adolescent mental health. FINDINGS: Females reported more neglect and emotional abuse, whereas males reported more physical abuse, but no statistically significant difference was found between genders in the prevalence of sexual abuse. Adolescents were classified as having nil (32.6%), one (25.9%), two (20.7%), three (14.5%) or all four (6.3%) maltreatment types. Linear bivariate associations between MTM and depression, anxiety and low self-esteem were observed. After controlling for demographic and family factors, MTM showed significant independent effects. The proportions of the variance explained by the models ranged from 21% to 28%. CONCLUSION: The combined influence of adverse individual and family background factors and of child maltreatment upon mental health in adolescents in Viet Nam is consistent with research in non-Asian countries. Emotional abuse was strongly associated with each health indicator. In Asian communities where child abuse is often construed as severe physical violence, it is important to emphasize the equally pernicious effects of emotional maltreatment.

وصف الملف: electronic resource

العلاقة: http://www.scielosp.org/scielo.php?script=sci_arttext&pid=S0042-96862010000100011&lng=en&tlng=enTest; https://doaj.org/toc/0042-9686Test

الوصول الحر: https://doaj.org/article/e5d4a5918b2a42bb85c975138222d3dcTest