Duyệt theo Tác giả "Doan Thi Hoang Thao"
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Tài liệu Development of a decision-making system for transportation in remote inter-island area(2024-01) Dang Quoc Hai; Pham Thai Hoang; Doan Thi Hoang Thao; Dinh Gia Huy; Le Thanh TienThe transportation of goods and people between islands poses distinctive logistical hurdles due to the geographical remoteness and varied infrastructure prevalent in island settings. This study introduces a theoretical framework designed to improve the efficiency of selecting and routing hub islands in an inter-island logistics network by utilizing the hub-and-spoke model. The process of identifying potential hub islands involves an initial assessment of several criteria, encompassing geographical, economic, and equipment-related factors. The utilization of Floyd's algorithm was employed in the computation of the shortest distance matrices between islands, with consideration given to the avoidance of ship collisions. The identification of the required hubs is determined by employing a location set covering model, which includes a constraint on the maximum distance for service provision. The p-Median model was employed to ascertain the most efficient hub locations to minimize transportation expenses. The framework provides a quantitative approach to designing efficient logistics networks for inter-island transportation. It considers important factors, such as shipping routes, hub locations, and collision avoidance. The utilization of this methodology holds promise for augmenting connectivity and streamlining resource accessibility in geographically isolated island areas with limited infrastructure.Tài liệu Public administration for green port development strategy(2024-03) Truong Thi Hoang Oanh; Doan Thi Hoang Thao; Tran Duc Long; Tran Van Sanh; Pham Le Minh VuThe maritime sector is crucial for socioeconomic development and safeguarding the internal security and defense of the country. Ecosystems may be harmed by dredging and ship activities at ports. Services at seaports for transporting passengers and cargo are believed to be responsible for releasing approximately 20% of worldwide waste into the sea. Increased port activities heighten the risk of pollution, leading to a substantial adverse effect on the ecosystem. Thus, the goal is to prevent environmental contamination and construct sustainable seaports to balance environmental conservation and economic growth. However, there is no universal approach for constructing green ports globally, as it varies based on the specific circumstances of each seaport. A comprehensive set of documents and legislation aimed at reducing pollution in permeable ecosystems in Vietnam has been assembled, especially the Green Port Development Project and recommendations have been provided following a comparison with worldwide case studies. Additional improvements are needed in green concession policies, minimizing ship and inland transport idling and terminal waiting times, and carbon capture and storage.