Nguyen Thi Minh, Phan Huu Lam, Nguyen Hong Quang, Cao Thanh Nghia, Luong Ngoc Minh, Nguyen Thi Kim Thu, Nguyen Thi Minh Tam, HO Thi Huyen Thuong, Vu Dinh Lam, Nguyen Thi Quynh Hoa
A broadband and lightweight polarization converter is proposed for applications in the THz frequency region. The proposed design has a metasurface structure with the dielectric layer modified to a hollow structure to obtain a lightweight design. The unit cell consists of two opposite arcs resonator patches and a continuous metal patch separated by the polyimide substrate layer. The simulated results indicate that the proposed polarized converter achieves a polarization conversion ratio above 93% in the frequency range from 1.6 THz to 5.8 THz with a relative bandwidth of 113.5%.
{"title":"A SIMPLE DESIGN OF BROADBAND CROSS-POLARIZATION CONVERTER FOR THE THz FREQUENCY RANGE","authors":"Nguyen Thi Minh, Phan Huu Lam, Nguyen Hong Quang, Cao Thanh Nghia, Luong Ngoc Minh, Nguyen Thi Kim Thu, Nguyen Thi Minh Tam, HO Thi Huyen Thuong, Vu Dinh Lam, Nguyen Thi Quynh Hoa","doi":"10.56824/vujs.2023a084","DOIUrl":"https://doi.org/10.56824/vujs.2023a084","url":null,"abstract":"A broadband and lightweight polarization converter is proposed for applications in the THz frequency region. The proposed design has a metasurface structure with the dielectric layer modified to a hollow structure to obtain a lightweight design. The unit cell consists of two opposite arcs resonator patches and a continuous metal patch separated by the polyimide substrate layer. The simulated results indicate that the proposed polarized converter achieves a polarization conversion ratio above 93% in the frequency range from 1.6 THz to 5.8 THz with a relative bandwidth of 113.5%.","PeriodicalId":447825,"journal":{"name":"Vinh University Journal of Science","volume":"26 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139169024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In preschool activities, children's need for cooperation is extremely strong. In today's era, the knowledge economy along with the scientific and technological revolution and international integration are developing rapidly. That requires children to know how to cooperate, share, listen, resolve conflicts and coordinate with each other. Therefore, cooperation skills are an indispensable factor to help children succeed. The article studies the reality of cooperative skills education management in Thai Nguyen city preschools in terms of planning, organizing and directing implementation, thereby proposing solutions such as: Organize training for teachers on cooperative skills education methods for 5-6 year old children in preschool; Mobilize forces inside and outside the school to participate in educating cooperation skills for 5-6 year old children in preschool; Mobilizing forces inside and outside of the school; Development of facilities to serve cooperative skills education activities for 5-6 year old children in preschool.
{"title":"THỰC TRẠNG VÀ BIỆN PHÁP GIÁO DỤC KỸ NĂNG HỢP TÁC CHO TRẺ 5-6 TUỔI Ở CÁC TRƯỜNG MẦM NON THÀNH PHỐ THÁI NGUYÊN, TỈNH THÁI NGUYÊN","authors":"Nguyễn Hồng Thủy","doi":"10.56824/vujs.2023c133","DOIUrl":"https://doi.org/10.56824/vujs.2023c133","url":null,"abstract":"In preschool activities, children's need for cooperation is extremely strong. In today's era, the knowledge economy along with the scientific and technological revolution and international integration are developing rapidly. That requires children to know how to cooperate, share, listen, resolve conflicts and coordinate with each other. Therefore, cooperation skills are an indispensable factor to help children succeed. The article studies the reality of cooperative skills education management in Thai Nguyen city preschools in terms of planning, organizing and directing implementation, thereby proposing solutions such as: Organize training for teachers on cooperative skills education methods for 5-6 year old children in preschool; Mobilize forces inside and outside the school to participate in educating cooperation skills for 5-6 year old children in preschool; Mobilizing forces inside and outside of the school; Development of facilities to serve cooperative skills education activities for 5-6 year old children in preschool.","PeriodicalId":447825,"journal":{"name":"Vinh University Journal of Science","volume":"46 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139170266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Building a strong brand will affirm the position and image of the school in society. Currently, the non-public system of nursery schools is growing and developing along with the trend of socialization of education. Although positive results have been achieved, fierce competition between educational organizations is the difficulty that all schools are facing. The article has analyzed the current situation of planning, organizing, directing, inspecting, and evaluating the branding of non-public nursery schools as well as the management of physical facilities for branding. Thereby clearly identifying the limitations and causes of limitations as a premise to propose measures based on a number of research directions to meet urgent scientific and practical requirements.
{"title":"THỰC TRẠNG QUẢN LÝ XÂY DỰNG THƯƠNG HIỆU TRƯỜNG MẦM NON NGOÀI CÔNG LẬP HUYỆN HIỆP HÒA, TỈNH BẮC GIANG","authors":"Duong Thi Mai","doi":"10.56824/vujs.2023c130","DOIUrl":"https://doi.org/10.56824/vujs.2023c130","url":null,"abstract":"Building a strong brand will affirm the position and image of the school in society. Currently, the non-public system of nursery schools is growing and developing along with the trend of socialization of education. Although positive results have been achieved, fierce competition between educational organizations is the difficulty that all schools are facing. The article has analyzed the current situation of planning, organizing, directing, inspecting, and evaluating the branding of non-public nursery schools as well as the management of physical facilities for branding. Thereby clearly identifying the limitations and causes of limitations as a premise to propose measures based on a number of research directions to meet urgent scientific and practical requirements.","PeriodicalId":447825,"journal":{"name":"Vinh University Journal of Science","volume":"31 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139168593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In recent decades, many studies have recognized that innovation based on the application of new technology is a competitive advantage in the global economy. However, this issue is still not really fully understood and strongly implemented in Vietnam. This article will clarify some issues about innovation based on the application of new technology: definitions, the relationship between innovation and new technology application, basic attributes and factors affecting this process. Through that, a number of principled recommendations have been proposed to enhance innovation activities based on the application of new technology in Vietnam in general and Nghe An province in particular in the current context.
{"title":"MỘT SỐ VẤN ĐỀ VỀ ĐỔI MỚI SÁNG TẠO DỰA TRÊN ỨNG DỤNG CÔNG NGHỆ MỚI","authors":"HA Dinh Thanh, HA Huy Ngoc","doi":"10.56824/vujs.2023b107","DOIUrl":"https://doi.org/10.56824/vujs.2023b107","url":null,"abstract":"In recent decades, many studies have recognized that innovation based on the application of new technology is a competitive advantage in the global economy. However, this issue is still not really fully understood and strongly implemented in Vietnam. This article will clarify some issues about innovation based on the application of new technology: definitions, the relationship between innovation and new technology application, basic attributes and factors affecting this process. Through that, a number of principled recommendations have been proposed to enhance innovation activities based on the application of new technology in Vietnam in general and Nghe An province in particular in the current context.","PeriodicalId":447825,"journal":{"name":"Vinh University Journal of Science","volume":"14 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139168167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nguyen Xuan Tien, LE Tien Huu, HO Thi Phuong, Nguyen Van Lam
The purpose of this research is to examine the change in water resources over the previous 50 years in the Lam River basin (also known as the Ca River) in Nghe An province, an important water resource basin in the North Central area. According to the findings, the amount of flow through hydrological stations on rivers and streams in Nghe An province has been falling since 2012, and the yearly flow pattern is continuously dropping. For many years following 2015, the flow has been lower than typical, owing to the drought that occurred during the dry season of 2015-2016.
{"title":"ASSESSMENT OF WATER RESOURCE VARIATION IN THE LAM RIVER BASIN FROM 1970 TO 2022","authors":"Nguyen Xuan Tien, LE Tien Huu, HO Thi Phuong, Nguyen Van Lam","doi":"10.56824/vujs.2023a068","DOIUrl":"https://doi.org/10.56824/vujs.2023a068","url":null,"abstract":"The purpose of this research is to examine the change in water resources over the previous 50 years in the Lam River basin (also known as the Ca River) in Nghe An province, an important water resource basin in the North Central area. According to the findings, the amount of flow through hydrological stations on rivers and streams in Nghe An province has been falling since 2012, and the yearly flow pattern is continuously dropping. For many years following 2015, the flow has been lower than typical, owing to the drought that occurred during the dry season of 2015-2016.","PeriodicalId":447825,"journal":{"name":"Vinh University Journal of Science","volume":"9 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139168174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
LA The Phuc, VU Tien Duc, Nguyen Tat Thinh, Pham Thi Tram, LE Quang Dang, Luong Thi Tuat
Heritage in UNESCO Global Geopark Dak Nong is rich and diverse with a full range of categories including natural and cultural heritage. Many outstanding heritage sites have been preserved and become invaluable resources for scientific research, education - study and tourism exploitation, contributing to the sustainable socioeconomic development in Dak Nong province. During the recent ield surveys, several dual/mixed heritage points combining geological and cultural significance were discovered, particularly prehistoric geological heritage rsites. Some of these sites can be excavated for on-site conservation and transformed into a unique highlight to attract tourists to tourism purposes. This article introduces some valuable new discoveries related to mixed heritage to preserve and promote the heritage values and toutism development in the UNESCO Global Geopark in Dak Nong.
{"title":"NHỮNG PHÁT HIỆN MỚI NĂM 2023 VỀ CÁC DI SẢN HỖN HỢP TẠI CÔNG VIÊN ĐỊA CHẤT TOÀN CẦU UNESCO ĐẮK NÔNG","authors":"LA The Phuc, VU Tien Duc, Nguyen Tat Thinh, Pham Thi Tram, LE Quang Dang, Luong Thi Tuat","doi":"10.56824/vujs.2023b077","DOIUrl":"https://doi.org/10.56824/vujs.2023b077","url":null,"abstract":"Heritage in UNESCO Global Geopark Dak Nong is rich and diverse with a full range of categories including natural and cultural heritage. Many outstanding heritage sites have been preserved and become invaluable resources for scientific research, education - study and tourism exploitation, contributing to the sustainable socioeconomic development in Dak Nong province. During the recent ield surveys, several dual/mixed heritage points combining geological and cultural significance were discovered, particularly prehistoric geological heritage rsites. Some of these sites can be excavated for on-site conservation and transformed into a unique highlight to attract tourists to tourism purposes. This article introduces some valuable new discoveries related to mixed heritage to preserve and promote the heritage values and toutism development in the UNESCO Global Geopark in Dak Nong.","PeriodicalId":447825,"journal":{"name":"Vinh University Journal of Science","volume":"18 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139168574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
LE Tien Huu, HA Thi Kim Thanh, HO Thi Phuong, PHAN Thi Lan Anh, NGUYEN Xuan Tien
The purpose of this research is to determine the relationship between the land area in the agricultural watershed and the nutrient load in the Ca River basin. Eight sampling sites in the Ca River basin were chosen for sampling in two phases during the dry season (5/2021) and the rainy season (September-2021). The results show that the measured water flow ranges from 27.7 m3 /s to 206.1 m3 /s in the dry season, with the highest reaching 2696 m3 /s and the lowest at 395 m3 /s in the rainy season. The load results of nutrients TN and, TP show a close relationship with flow and topography. The area of agricultural land in the basins influences nutrient load, which follows two distinct trends, increasing steadily in the northwest side river group and fluctuating in the southeast side river group. The land use process has a more obvious impact on the load during the dry season, whereas natural factors change the variation of nutrient load flows during the rainy season.
{"title":"THE RELATIONSHIP OF AGRICULTURAL LAND USE AND NUTRITIONAL LOADING IN THE CA RIVER BASINS","authors":"LE Tien Huu, HA Thi Kim Thanh, HO Thi Phuong, PHAN Thi Lan Anh, NGUYEN Xuan Tien","doi":"10.56824/vujs.2023a056","DOIUrl":"https://doi.org/10.56824/vujs.2023a056","url":null,"abstract":"The purpose of this research is to determine the relationship between the land area in the agricultural watershed and the nutrient load in the Ca River basin. Eight sampling sites in the Ca River basin were chosen for sampling in two phases during the dry season (5/2021) and the rainy season (September-2021). The results show that the measured water flow ranges from 27.7 m3 /s to 206.1 m3 /s in the dry season, with the highest reaching 2696 m3 /s and the lowest at 395 m3 /s in the rainy season. The load results of nutrients TN and, TP show a close relationship with flow and topography. The area of agricultural land in the basins influences nutrient load, which follows two distinct trends, increasing steadily in the northwest side river group and fluctuating in the southeast side river group. The land use process has a more obvious impact on the load during the dry season, whereas natural factors change the variation of nutrient load flows during the rainy season.","PeriodicalId":447825,"journal":{"name":"Vinh University Journal of Science","volume":"166 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136264266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nguyen Huy Truong Luu is a long-standing academic family in Kim Song Truong commune, Can Loc district, Ha Tinh province. Through the history of formation and development for hundreds of years, Nguyen Huy Truong Luu has formed a treasure of diverse heritages, typically 62 units of parallelism (antithetical couplets). The article analyzes the heritage value of Nguyen Huy Truong Luu family in three aspects: literature, culture - education, international relation - military. From here, the issue of conservation and promotion of heritage values is raised, heading towards the nomination of this heritage group to the List of Memory of the World Committee for Asia and the Pacific (MOWCAP), and its inclusion in the List of National Treasures of Vietnam.
Nguyen Huy Truong Luu是河静省Can Loc区Kim Song Truong公社的一个历史悠久的学术家庭。经过数百年的形成和发展历史，阮惠张律已形成了多种遗产的宝藏，典型的是62个对联。本文从文学、文化-教育、国际关系-军事三个方面分析了阮惠张禄家族的遗产价值。在此基础上，提出了保护和促进遗产价值的问题，朝着将该遗产团体提名为亚洲及太平洋世界委员会(MOWCAP)的记忆名录，并将其列入越南国宝名录的方向发展。
{"title":"THE VALUE OF THE HERITAGE OF THE TYPICAL COUPLETS OF THE NGUYEN HUY TRUONG LUU FAMILY AND THE PROBLEMS RAISED","authors":"PHAN Thanh Hoang, NGUYEN Xuan Bao","doi":"10.56824/vujs.2023b009","DOIUrl":"https://doi.org/10.56824/vujs.2023b009","url":null,"abstract":"Nguyen Huy Truong Luu is a long-standing academic family in Kim Song Truong commune, Can Loc district, Ha Tinh province. Through the history of formation and development for hundreds of years, Nguyen Huy Truong Luu has formed a treasure of diverse heritages, typically 62 units of parallelism (antithetical couplets). The article analyzes the heritage value of Nguyen Huy Truong Luu family in three aspects: literature, culture - education, international relation - military. From here, the issue of conservation and promotion of heritage values is raised, heading towards the nomination of this heritage group to the List of Memory of the World Committee for Asia and the Pacific (MOWCAP), and its inclusion in the List of National Treasures of Vietnam.","PeriodicalId":447825,"journal":{"name":"Vinh University Journal of Science","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136264745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Trong bài báo này, chúng tôi thiết lập sự tồn tại duy nhất điểm bất động của ánh xạ T-tựa co kiểu Ciric trong không gian Sbmêtric đầy đủ. Kết quả của chúng tôi là mở rộng thực sự của một số kết quả trong các tài liệu của L. B. Ciric (Proc. Amer. Math. Soc, 1971), S. Sedghi, N. Shobe, A. Aliouche (Math.Vesik, 2012), S. Sedghi, N. V. Dung (Math. Vesik, 2014).
在这篇文章中，我们建立了在完全的sbmo空间中唯一的Ciric型t型光的静态点。我们的结果是对L. B. Ciric (Proc. Amer)文献中一些结果的实际扩展。Math。， S. Sedghi, N. Shobe, A. Aliouche(数学)。维西克，2012)，S. Sedghi, N. V. Dung(数学。Vesik, 2014年)。
{"title":"ON EXISTENCE OF FIXED POINTS FOR T-QUASI CONTRACTIVE MAPPINGS OF CIRIC TYPE IN Sb METRIC SPACES","authors":"DINH Huy Hoang, VU Hai Quan","doi":"10.56824/vujs.2023a004","DOIUrl":"https://doi.org/10.56824/vujs.2023a004","url":null,"abstract":"Trong bài báo này, chúng tôi thiết lập sự tồn tại duy nhất điểm bất động của ánh xạ T-tựa co kiểu Ciric trong không gian Sbmêtric đầy đủ. Kết quả của chúng tôi là mở rộng thực sự của một số kết quả trong các tài liệu của L. B. Ciric (Proc. Amer. Math. Soc, 1971), S. Sedghi, N. Shobe, A. Aliouche (Math.Vesik, 2012), S. Sedghi, N. V. Dung (Math. Vesik, 2014).","PeriodicalId":447825,"journal":{"name":"Vinh University Journal of Science","volume":"144 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136265676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The mountainous region of Vietnam accounts for three-quarters of the country's total area, is a place with a very important position in politics, foreign affairs, national defense, “a place contiguous with neighboring countries”... During his lifetime, President President Ho Chi Minh has deeply concerned about the prosperous, happy and progressive life of the compatriots, especially training and fostering ethnic minority cadres. He gave strategic instructions on building a contingent of ethnic minority cadres with the aim of “making the ethnic groups gradually manage all their affairs by themselves”. The article clarifies Ho Chi Minh's thought on training ethnic minority cadres and their application to the process of building ethnic minority cadres in the mountainous districts of Nghe An meet the country's renovation requirements.
{"title":"HO CHI MINH WITH THE TRAINING OF ETHNIC MINORITY OFFICIALS AND PRACTICAL MEANINGS OF BUILDING A TEAM OF ETHNIC MINORITY OFFICIALS IN NGHE AN TODAY","authors":"TRAN Cao Nguyen, NGUYEN Khanh Ly","doi":"10.56824/vujs.2023b055","DOIUrl":"https://doi.org/10.56824/vujs.2023b055","url":null,"abstract":"The mountainous region of Vietnam accounts for three-quarters of the country's total area, is a place with a very important position in politics, foreign affairs, national defense, “a place contiguous with neighboring countries”... During his lifetime, President President Ho Chi Minh has deeply concerned about the prosperous, happy and progressive life of the compatriots, especially training and fostering ethnic minority cadres. He gave strategic instructions on building a contingent of ethnic minority cadres with the aim of “making the ethnic groups gradually manage all their affairs by themselves”. The article clarifies Ho Chi Minh's thought on training ethnic minority cadres and their application to the process of building ethnic minority cadres in the mountainous districts of Nghe An meet the country's renovation requirements.","PeriodicalId":447825,"journal":{"name":"Vinh University Journal of Science","volume":"2016 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136264576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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