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Wyszukujesz frazę "Le, Hong Anh" wg kryterium: Autor

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    Wyświetlanie 1-5 z 5
    Tytuł:
    Integration of Mobile and Meb GIS Technologies to Promote Smart and Sustainable Tourism in Vietnam
    Autorzy:
    Nguyen, Mai Dung
    To, Xuan Ban
    Le, Hong Anh
    Powiązania:
    https://bibliotekanauki.pl/articles/27323289.pdf
    Data publikacji:
    2023
    Wydawca:
    Polskie Towarzystwo Przeróbki Kopalin
    Tematy:
    mobile GIS
    WebGIS
    location-based services
    smart and sustainable tourism
    GIS
    turystyka
    Wietnam
    Opis:
    Tourism is one of the most important factors in economic growth in Vietnam. However, it requires the balance between economics, social-cultures, and ecology because of their big impacts. In this paper, we propose a platform with mobile and web-based applications that can support smart and sustainable tourism in Vietnam for both local governments and visitors. The mobile application allows visitors to access location-based services to explore the visiting area, such as finding nearby natural attractions, as well as information to minimize the negative effects of tourism on the environment and the local community. It also enables users to report negative impacts to local government. The web application allows local authorities to monitor the status and trends of the habitant, natural environment, tourism infrastructure and activities in the area. The system uses geographic information systems (GIS) and remote sensing techniques to collect, analye and visualize various indicators of sustainability. The platform is developed with open-source technologies such as NodeJS, PostgreSQL, and Flutter. The paper demonstrates the feasibility and usefulness of the proposed platform through case studies in Hoa Binh and BacKan, two provinces have many attractive natural sites.
    Źródło:
    Inżynieria Mineralna; 2023, 2; 225--230
    1640-4920
    Pojawia się w:
    Inżynieria Mineralna
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Strategy in Dispatching Trucks and Shovels with Different Capacity to Increase the Operating Efficiency in Cao Son Surface Coal Mine, Vietnam
    Autorzy:
    Pham, Van Hoa
    Tran, Trung Chuyen
    Le, Hong Anh
    Le, Thi Thu Hoa
    Pham, Van Viet
    Nguyen, Anh Tuan
    Le, Thi Huong Giang
    Powiązania:
    https://bibliotekanauki.pl/articles/2020238.pdf
    Data publikacji:
    2021
    Wydawca:
    Polskie Towarzystwo Przeróbki Kopalin
    Tematy:
    truck dispatching
    truck-shovel system
    dispatching strategy
    detailed match factor
    górnictwo odkrywkowe
    Wietnam
    strategia
    Opis:
    In surface mining operations, the operating costs of truck-shovel system constitutes 50-60% of the total. Only a little save in the operation costs in this system will bring large profit for the mines. Due to many investment periods, the capacity of both trucks and shovels in Cao Son surface coal mine is different. This leads to the low efficiency and the difficulty in dispatching strategy for the mine. This paper presents the current situation and selection of advanced dispatching strategy for increasing the efficiency trucks and shovels at this surface coal mine. The results show the detailed match factor reflects the state of each team of loader and trucks and should be use as the indicator for dispatching decision for the heterogeneous truck and shovel fleet at Cao Son surface coal mine.
    Źródło:
    Inżynieria Mineralna; 2021, 2; 487--494
    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:
    Genotype TNF-α(-308) and Silicosis on Factory Workers in Vietnam in 2020
    Autorzy:
    Nguyen, Viet
    Nguyen, Thi Thu Huyen
    Dao, Xuan Dat
    Vu, Xuan Quy
    Pham, Thi Quan
    Le, Thi Kim Chung
    Tran, Huy Thinh
    Le, Thi Huong
    Nguyen, Ngoc Anh
    Nguyen, Viet Nhung
    Nguyen, Ngoc Hong
    Luong, Mai Anh
    Le, Thi Thanh Xuan
    Powiązania:
    https://bibliotekanauki.pl/articles/2020235.pdf
    Data publikacji:
    2021
    Wydawca:
    Polskie Towarzystwo Przeróbki Kopalin
    Tematy:
    silicosis
    genotype
    TNF-α
    Vietnam
    Wietnam
    genotyp
    Opis:
    The studFigy aims to determine the TNF-α single-nucleotide polymorphism TNF-α (-308) and assess the association of TNF-a(-308) SNP with the risk of silicosis among workers directly exposed to silica dust in Vietnam. A study was undertaken among 78 cases with silicosis and 103 controls without silicosis in Vietnam. Blood samples were collected for genomic DNA extraction from each subject. The phenotyping of TNF-α(-308) was performed using polymerase chain reaction‐based restriction fragment length polymorphism (PCR‐RFLP) and dye termination sequencing. Results: The average exposure time of the case group was slightly higher than that of the control group (12.46 ± 6.732 years vs. 12.09 ± 7.854 years). The majority of genotypes in both silicosis and non-silicosis was GG. When analyzing the concentration of TNF-α in the study participants' blood, it is shown that the average concentration of TNFα in the case group was higher than that in the control group. The genotype AG in the case group was 1.368 times higher than that in the control group. The percentage of all A alleles in the case group with silicosis was 1.342 times higher than the control group without the disease, similar to previous studies. Conclusion: The majority of genotypes in both groups was GG. The average concentration of TNF-α in blood, genotype AG, and the percentage of all A alleles in the case group was higher than that in the control group.
    Źródło:
    Inżynieria Mineralna; 2021, 2; 459--466
    1640-4920
    Pojawia się w:
    Inżynieria Mineralna
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of supply chain management in construction industry
    Autorzy:
    Nguyen, Phong Thanh
    Nguyen, Vi Nguyen
    Pham, Luan Hong
    Nguyen, Thu Anh
    Nguyen, Quyen Le Hoang Thuy To
    Huynh, Vy Dang Bich
    Powiązania:
    https://bibliotekanauki.pl/articles/103168.pdf
    Data publikacji:
    2018
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    supply chain management (SCM)
    limiting factor
    construction industry
    zarządzanie łańcuchem dostaw
    czynnik ograniczający
    przemysł budowlany
    Opis:
    The application of the supply chain management (SCM) in industry has achieved much success, especially in the manufacturing sector. In the current market, the Vietnamese construction companies must compete not only with domestic companies but also with foreign ones, the application of SCM is essential to improve efficiency and increase their competitive advantage. In this paper, a survey was carried out to identify factors that cause limitation in applying SCM to the Vietnamese construction industry. A qualitative approach was based on prime contractor’s perspective at the construction phase of the project. The survey questionnaire was designed by synthesizing and inheriting the previous studies and consultation with experts. The survey participants are those who have had working experience with main contractors and joined in the construction projects. The face-to-face interviews were conducted to collect data. Descriptive statistics analysis and Exploratory Factor Analysis (EFA) were used to analyze data. The results indicated seven leading causes which limited the application of SCM in the construction industry.
    Źródło:
    Advances in Science and Technology. Research Journal; 2018, 12, 2; 11-19
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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