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Tytuł:
Assessment of Change in Urban Green Spaces Using Sentinel 2 MSI Data and GIS Techniques: A Case Study in Thanh Hoa City, Vietnam
Autorzy:
Nguyen, Viet Nghia
Trinh, Le Hung
Nguyen, Thi Thu Nga
Le, Thi Le
Powiązania:
https://bibliotekanauki.pl/articles/2020076.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Przeróbki Kopalin
Tematy:
urban green space
Weighted Urban Green Space Index
Sentinel 2
Thanh Hoa city
strefa miejska
Wietnam
GIS
Opis:
This paper presents the results of an assessment of change in urban green spaces in Thanh Hoa city (Vietnam). Sentinel 2 MSI data in 2015 and 2021 are used to calculate 3 parameters: percentage of green, weight of green types, and weight of proximity to green. These parameters are used to calculate the Weighted Urban Green Space Index (WUGSI). The final result shows the distribution of green space in the study area consisted of very high-quality green, high-quality green, moderate quality green, and low quality green. The obtained results show that the quality of urban green space in Thanh Hoa city has changed significantly in the period 2015-2021, in which the area with category “low quality green space” increased from 7.17% up to 9.48%; areas with category “very high-quality green space” reduced from 65.02% to 47.39%.
Źródło:
Inżynieria Mineralna; 2021, 2; 251--260
1640-4920
Pojawia się w:
Inżynieria Mineralna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Monitoring Vegetation Cover Changes by Sentinel-1 Radar Images Using Random Forest Classification Method
Autorzy:
Tran, Van Anh
Le, Thi Le
Nguyen, Nhu Hung
Le, Thanh Nghi
Tran, Hong Hanh
Powiązania:
https://bibliotekanauki.pl/articles/2020227.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Przeróbki Kopalin
Tematy:
vegetation cover change,
Sentinel-1
Random Forest
Binh Duong
Vietnam
Wietnam
wegetacja
Opis:
Vietnam is an Asian country with hot and humid tropical climate throughout the year. Forests account for more than 40% of the total land area and have a very rich and diverse vegetation. Monitoring the changes in the vegetation cover is obviously important yet challenging, considering such large varying areas and climatic conditions. A traditional remote sensing technique to monitor the vegetation cover involves the use of optical satellite images. However, in presence of the cloud cover, the analyses done using optical satellite image are not reliable. In such a scenario, radar images are a useful alternative due to the ability of radar pulses in penetrating through the clouds, regardless of day or night. In this study, we have used multi temporal C band satellite images to monitor vegetation cover changes for an area in Dau Tieng and Ben Cat districts of Binh Duong province, Mekong Delta, Vietnam. With a collection of 46 images between March 2015 and February 2017, the changes of five land cover types including vegetation loss and replanting in 2017 were analyzed by selecting two cases, using 9 images in the dry season of 3 years 2015, 2016 and 2017 and using all of 46 images to conduct Random Forest classifier with 100, 200, 300 and 500 trees respectively. The result in which the model with nine images and 300 trees gave the best accuracy with an overall accuracy of 98.4% and a Kappa of 0.97. The results demonstrated that using VH polarization, Sentinel-1 gives quite a good accuracy for vegetation cover change. Therefore, Sentinel-1 can also be used to generate reliable land cover maps suitable for different applications.
Źródło:
Inżynieria Mineralna; 2021, 2; 441--451
1640-4920
Pojawia się w:
Inżynieria Mineralna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Impact of Coal Exploitation on Tidal Flat Changes, an Investigation Using Remote Sensing Data in Vietnam
Autorzy:
Pham, Thi Lan
Tong, Si Son
Le, Thi Thu Ha
Le, Thi Le
Hoang, Huu Duc
Powiązania:
https://bibliotekanauki.pl/articles/2020940.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Przeróbki Kopalin
Tematy:
tidal flat
coal
remote Sensing
przypływy
węgiel
teledetekcja
Opis:
Tidal flat plays a crucial role in socio-economic development and ecological environment. Tidal flats in Ha Long-Cam Pha in Vietnam are impacted by human activities, especially coal mining activities. Using remote sensing data is able to detect, extract, and monitor the changes of tidal flats and exploited coal mine area with multi-temporal, in various scales, and for a large coverage. This study aims to investigate the impact of coal mining activities on the changes of tidal flats using remote sensing in Cam Pha, Ha Long, one of the biggest coal basins in Vietnam. Digital Elevation Models (DEMs) of tidal flats constructed by Landsat satellite images acquired in years 1989, 2001, and 2014 are compared to determine the volume changes. Besides, coal mining activities including coal production, waste rock dump area, and the expansion of open coal mine during the period 1989-2014 are investigated using correspondent Landsat images and the reports from the coal mine companies in the study area. Sediment samples in tidal flats are analyzed to determine the origin of the sediments. As the results, organic matter in the tidal flats is dominant with the concentration of 459 g/kg to 607 g/kg, which is evidence for the impact of coal exploitation on the coastal environment. In addition, the relationship between coal mine activities and tidal flat variation is well observed in this study.
Źródło:
Inżynieria Mineralna; 2021, 2; 521--532
1640-4920
Pojawia się w:
Inżynieria Mineralna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Copyright Protection for Works Created by AI Technology under the EU Law and Vietnamese Law
Autorzy:
Le Thi, Minh
Powiązania:
https://bibliotekanauki.pl/articles/40458021.pdf
Data publikacji:
2023
Wydawca:
Katolicki Uniwersytet Lubelski Jana Pawła II
Tematy:
European Union
Copyright
artificial intelligence
Vietnamese intellectual property law
Vietnamese copyright law
Opis:
The legislation of the European Union increasingly focuses on expanding the scope of works protected by intellectual property rights, including literary works, music, films, and phonograms. The breakthrough in artificial intelligence (AI) has contributed significantly to creating works of art with little or no human intervention. The article examines the current situation of EU copyright law and Vietnamese law regarding AI-generated works. The article concludes that EU law governs copyright for these works based on the extent of human contribution to the creation of the work. Meanwhile, Vietnamese law still needs to resolve the issue of intellectual property rights for works created by AI.
Źródło:
Review of European and Comparative Law; 2023, 55, 4; 7-28
2545-384X
Pojawia się w:
Review of European and Comparative Law
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determination of the critical velocity of a straight wing with a high aspect ratio
Autorzy:
Thanh, Le Thi
Powiązania:
https://bibliotekanauki.pl/articles/45423968.pdf
Data publikacji:
2023
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
prędkość krytyczna
aerodynamika
pręt
thin rod
divergence
linear aerodynamics
straight wing
high aspect ratio
critical velocity
Opis:
An aerodynamic problem on an air flow around a large aspect ratio rectangular wing is investigated in this study. According to the theory of Vlasov, the wing is considered to be a thin rod. External loads are assumed to be proportional to the airfoil angle of attack related to the dimensionless coefficient of the lift and the pitching moment coefficient. These coefficients depend on the airfoil parameters and the Mach number M and are determined by experimental measurements for subsonic and supersonic velocities. In this case, to define the unstable cases of the wing, one bases on the Lyapunov stability theory. Equations of bending and torsional free vibrations have resulted. Based on the analysis of natural frequencies (eigenfrequencies), it is possible to determine the changing positions of the real part and the imaginary part of the characteristic equation solution. These positions can cause instabilities for the wing such as torsional divergence and flutter.
Źródło:
International Journal of Applied Mechanics and Engineering; 2023, 28, 1; 105-117
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Professional value orientations of pedagogic students at universities in Northern Central region of Vietnam nowadays
Zawodowa orientacja społeczna studentów pedagogiki na uniwersytetach północno-środkowego regionu współczesnego Wietnamu
Autorzy:
Le, Vu Thi Phuong
Powiązania:
https://bibliotekanauki.pl/articles/442240.pdf
Data publikacji:
2019-06-28
Wydawca:
Towarzystwo Wiedzy Powszechnej w Szczecinie
Tematy:
values
value orientation
professional value
teaching profession
pedagogic students
wartości
orientacja społeczna
wartość zawodowa
zawód nauczyciela
studenci oświaty lub pedagogiki
Opis:
Pedagogic students or educational students are a particular social class – those who will consider teaching as a profession. Teaching is a very important career because it creates talents who are the nation’s most valuable resource. The future of education of one nation depends greatly on this team. The article made a survey on the professional value orientation (VO) of educational students at Vinh University and Hue University’s College of Education (HUCE) – the two oldest universities in the North Central region of Vietnam. Survey data were processed by mathematical statistics method, mainly calculating the percentage of responses to each item in the questionnaires, which provided the basis for judgments on the characteristics of professional value orientation of current pedagogic students at universities in North Central region of Vietnam; then, helps education institutions find appropriate ways and methods of impacting to maximize the strength of professional teachers in our country’s education.
Studenci pedagogiki lub oświaty są szczególną klasą społeczną: to ci, którzy rozważają podjęcie pracy nauczyciela. Nauczanie to bardzo ważna ścieżka kariery, ponieważ stwarza talenty, które są najcenniejszym narodowym źródłem. Przyszłość edukacji każdego narodu zależy w wielkiej mierze właśnie od nich. W artykule zaprezentowano ankietę poświęconą zawodowej orientacji społecznej (value orientation, VO) studentów oświaty na Vinh University oraz Hue University’s College of Education (HUCE) – dwóch najstarszych uniwersytetach w północno-środkowym regionie Wietnamu. Dane z ankiety zostały przetworzone za pomocą metod statystycznych, głownie poprzez obliczanie procentowego poziomu odpowiedzi na każde pytanie ankiety, co dostarczyło podstaw do wyciągnięcia wniosków na temat charakterystyki zawodowej orientacji społecznej dzisiejszych studentów pedagogiki na uniwersytetach północno-środkowego regionu Wietnamu. Pomaga to także instytucjom edukacyjnym znaleźć właściwe kierunki i metody oddziaływania w celu zmaksymalizowania siły zawodowych nauczycieli w naszej krajowej edukacji.
Źródło:
Edukacja Humanistyczna; 2019, 1; 135-152
1507-4943
Pojawia się w:
Edukacja Humanistyczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessing Impacts of Mining Activities on Land Use/Land Cover Change Using Remote Sensing and GIS Techniques: A Case Study in Campha City, Vietnam
Autorzy:
Le, Thi Thu Ha
Powiązania:
https://bibliotekanauki.pl/articles/2020236.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Przeróbki Kopalin
Tematy:
land use/land cover change
mining activities
remote sensing
GIS
górnictwo
Wietnam
Opis:
Coal is one of the most mining commodities to date, especially to supply both national and international energy needs. Coal mining activities that are not well managed will have an impact on the occurrence of environmental damage. The present study was undertaken to analyze the process of humaninduced landscape transformation in the coal mines affected areas of Cam Pha, northeast Vietnam by interpreting temporal remote sensing data and using Geographic Information System. This experiment revealed that most of the study area was dominated by forest in all the time sequence period. The forest cover has decreased about 21.3%, meanwhile having nine fold increase in mining area from 1990 to 2020. The forest area lost during the study period was 7983.45 ha due to land cover conversion into mining area. The mining activities were also detrimental to the bare land and water body cover. The results of this study are expected to be used to support government efforts and mining managers in post-mining coal activities.
Źródło:
Inżynieria Mineralna; 2021, 2; 467--477
1640-4920
Pojawia się w:
Inżynieria Mineralna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Inclusive education policy and assurance of the quality of learning for children with disabilities
Polityka edukacji włączającej z zapewnienie jakości nauczania dzieci niepełnosprawnych
Autorzy:
Hang, Le Thi Thuy
Powiązania:
https://bibliotekanauki.pl/articles/903627.pdf
Data publikacji:
2018-05-18
Wydawca:
Akademia Pedagogiki Specjalnej im. Marii Grzegorzewskiej. Wydawnictwo APS
Tematy:
osoby niepełnosprawne
edukacja włączająca
polityka
jakość
Wietnam
persons with disabilities
inclusive education
policy
quality
Vietnam
Opis:
Artykuł poświęcony jest analizie sytuacji edukacyjnej uczniów niepełnosprawnych w Wietnamie. Autor dokonuje przeglądu aktów prawnych dotyczących edukacji włączającej, a także przedstawia badania, których celem było określenie poziomu przygotowania nauczycieli przedszkolnych oraz szkolnych z czterech regionów kraju do pracy w ramach edukacji inkluzyjnej. Wyniki badań porównano z danymi zgromadzonymi poprzez bezpośrednią obserwację nauczycieli pracujących w placówkach włączających. Okazało się, że deklarowany poziom przygotowania z zakresu edukacji inkluzyjnej nie pokrywa się z rzeczywistymi kompetencjami nauczycieli, którzy zawyżali stopień swojego doświadczenia w pracy inkluzyjnej z uczniami niepełnosprawnymi. Autor formułuje szereg zaleceń, których celem jest poprawa jakości edukacji uczniów ze specjalnymi potrzebami edukacyjnymi w Wietnamie.
The article analyzes the educational situation of students with disabilities in Vietnam. The author reviews legal acts regarding inclusive education. He also presents research aiming to determine the preparation level of preschool and school teachers in four Vietnamese regions to work in inclusive education. The results of the survey were compared with data obtained through direct observation of teachers’ work in inclusive settings. It turned out that the declared level of teachers’ preparation for inclusive education did not coincide with their real competences. Teachers overstated their degree of preparation to work in inclusion with students with disabilities. The author formulates a number of recommendations that are intended to improve the quality of education for students with special educational needs in Vietnam.
Źródło:
Szkoła Specjalna; 2018, LXXIX(2); 124-135
0137-818X
Pojawia się w:
Szkoła Specjalna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
High-Fiber Crackers Supplemented with Asparagus Hard-Stem: Impacts of Supplementation Ratios and Water Amounts in Cracker Recipe on the Product Quality
Autorzy:
Tran, Thi Thu Tra
Ngo, Le Hong Ngoc
Ton, Nu Minh Nguyet
Le, Thi Hong Nhung
Le, Thi Thuy
Le, Van Viet Man
Powiązania:
https://bibliotekanauki.pl/articles/31341115.pdf
Data publikacji:
2024-05-17
Wydawca:
Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
Tematy:
antioxidant capacity
Asparagus officinalis L
color parameters
consumer acceptability
dietary fiber
hardness
Opis:
Spears or cladophylls are edible parts of asparagus (Asparagus officinalis L.) implemented in a human diet while its hard-stem by-products have been used for animal feeding. In this study, the asparagus hard-stem was proved to be rich in dietary fiber and total phenolics with high antioxidant capacity. Wheat flour was partially replaced by asparagus hard-stem powder (AHP) in the cracker recipe and the AHP ratios were 0 (control), 5, 10, 15, 20% of the blend weight; the nutritional constituents, antioxidant capacities, physical attributes, and sensory overall acceptability of crackers were then evaluated. As the AHP ratio increased from 0 to 20%, the dietary fiber and total phenolic contents of the fortified crackers were improved by 5.0 times and 3.2 times, respectively, while their ferric reducing antioxidant power and DPPH scavenging capacity were enhanced by 6.1 and 1.4 times, respectively. Besides, the elevated ratio of AHP also increased the product hardness and reduced its overall acceptability. The impacts of water amount used in the dough kneading on the high-fiber cracker quality were then investigated. At 20% AHP level, the appropriate water amount was 55 g/100 g of the flour blend to reduce hardness and improve overall acceptability of the fortified crackers. The study results show that AHP is a potential dietary fiber and antioxidant ingredient for high-fiber cracker making.
Źródło:
Polish Journal of Food and Nutrition Sciences; 2024, 74, 2; 162-168
1230-0322
2083-6007
Pojawia się w:
Polish Journal of Food and Nutrition Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Circular Economy Model and the Implementation in Vietnamese Coal Mining Industry
Autorzy:
Le, Dinh Chieu
Dong, Thi Bich
Powiązania:
https://bibliotekanauki.pl/articles/2020223.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Przeróbki Kopalin
Tematy:
circular economy model
Vietnamese coal mining industry
sustainable development
Wietnam
przemysł górniczy
ekonomia
Opis:
The circular economy is the economic model that has been applied for a long time in the world. This model is applied at all three levels: micro (enterprise-level), intermediate (industry level, industrial zone level), and macro-level (local level, regional level, or national level). Vietnamese Coal Mining Industry has been having important contributions to the socio-economic development of Vietnam. However, this industry also causes lots of issues about environmental pollution. In the context of resource depletion, environmental pollution and the cost of exploiting and processing increases with the deep exploiting process; the tastes of utilizing resources, minimizing environmental pollution, and creating more value-added for this industry are inevitable requirements. Because of the tasks, applying the circular economy model into this industry (both intermediate and micro-level) is the urgent solution for the sustainable development of the Vietnamese Coal Mining Industry. The paper uses a combination of research methods such as theoretical research, case study research, statistical data analysis, etc., to propose the circular economy model for the Vietnamese Coal Mining Industry and some solutions to deploy this model into the industry's operations towards sustainable development.
Źródło:
Inżynieria Mineralna; 2021, 2; 433--439
1640-4920
Pojawia się w:
Inżynieria Mineralna
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-10 z 69

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