REGIONAL LINKAGE IN TOURISM: THE CASE OF VIETNAM

Abstract. This research is conducted for investigating the current situations of regional linkage in tourism development in the areas of Midlands and Northern Mountains in Vietnam. Data were collected from a survey of 755 people, including officials from State management bodies in charge of tourism, officials and staffs at tourism resorts, tourism firms, tourism scientists and tourists. In addition, we conducted focus group and interviewed tourism agency officials and tourism firms in the Midland and Mountainous provinces of Vietnam. The results show that tourism development in Vietnam in general and the Northwest region in particular is extremely fragmented, not yet forming a regional linkage; regional and national tourism development projects are just formalistic. Some causes are the limited regional integration policy, lack of appropriate regional governance mechanisms and inactive participation of the private sector in regional integration. Based on the findings, we propose a tourism sector linkage model; besides, policyimplications are given for fulfilling the linkage policies in Vietnam in particular, and more broadly for emerging countries in general.Keywords: Midlands and Northern Mountains, tourism linkage, Vietnam

A Review of Challenges and Opportunities in BIM Adoption for Construction Project Management

This research investigates the transformative impact of Building Information Modeling (BIM) on construction project management, highlighting its potential to enhance traditional processes through digital innovation. As the construction industry evolves amidst global economic integration and heightened competition, the demand for quality, efficiency, and sustainability escalates, presenting new challenges for project managers. Traditional management practices, while foundational, lack the dynamism and integrative capabilities offered by BIM technology. BIM emerges as a revolutionary paradigm, facilitating a shared digital environment that promotes precision, efficiency, and improved collaboration across the project lifecycle. By integrating BIM with artificial intelligence (AI), this study explores novel synergies that further refine project management methodologies, addressing complex challenges in the design, execution, and maintenance phases. The research employs a comprehensive review of existing literature, case studies, and practical applications to assess the effectiveness of BIM in various project management contexts. The findings reveal that while BIM significantly enhances project outcomes, its adoption faces technological, organizational, and cultural barriers. This necessitates a comprehensive strategy encompassing innovation, education, and policy reform to unlock its full potential. The study underscores the critical role of BIM in driving the future of construction project management, advocating for a collaborative effort among industry stakeholders to foster a conducive environment for BIM adoption and leverage its benefits for sustainable development in the construction sector

Optimization of Logistics Services in Vietnam Through LOGIVAN Application

Logistics is a type of service that plays an important role in promoting the country's economic growth. In addition, it is also of great significance to the transport sector in Vietnam in dealing with the challenges of traffic congestion in large cities. In Vietnam today, logistics services are growing. However, there is one major limitation that still exists, that is freight costs are still high. This does not meet the best requirements of customers. There are many reasons for this problem, one of the reasons is that trucks only carry one-way cargo, but there are no goods to ship backwards. The paper studies the application of LOGIVAN smart transport model in developing Logistics services in Vietnam today. Research results show that LOGIVAN transport model is the optimal model in solving the problem of empty cars in the transport of goods when they go back to the place of departure. This helps minimize Logistics costs for businesses, increases income for drivers and leads towards sustainable transport development. LOGIVAN develops two platform solutions for goods owners and vehicle owners. Accordingly, the author of the article confirms the quality of this model in developing Logistics services in Vietnam and guide the operation for users via applications on personal mobile devices at the same time. Keywords: Logistics; LOGIVAN; Vietnam. DOI: 10.7176/JESD/10-14-01 Publication date:July 31st 202

A Study on Employment for Rural Laborers in the Process of Industrialization and Modernization of Vietnam

Employment and job creation are global socio-economic issues and concern every country in the world and Vietnam is no exception. Today, the concept of development is comprehensively understood and economic growth is associated with progress, social justice, poverty reduction, on the basis of creating sustainable jobs for workers. At different times, employments for workers also have different characteristics. In the dimension of this study, employment for rural laborers with the case study of Nam Dinh of Vietnam have been investigated, then some recommendations are proposed for creating more jobs for rural people. Keywords: Employment, job creation, rural employment, rural labor. DOI: 10.7176/EJBM/12-21-13 Publication date:July 31st 202

Economic linkage in key economic zones: The case of Vietnam

This study was conducted to measure the level of economic linkage in key economic zones in central Vietnam generally and to measure the level of economic linkage in the tourism sector. Secondary data were collected from the Statistical Yearbook published by the General Statistics Office and the Local Bureau of Statistics and primary data collected from surveys of 102 hotels and tourism firms in the center of Vietnam. We used the Moran Index (I) to quantify overall economic aggregation across the region and that scoring method was used to measure the degree of linkage in regional tourism. The results show that the level of overall regional economic linkages was very low and this was also relevant when analyzing the tourism sector in some areas of the center of Vietnam. Based on the results, some recommendations are given for strengthening economic linkages in key economic regions of Vietnam

OVERALL ASSESSMENT OF DEFORMATION AND FORCE OF DIAPHRAGM WALL JOINTS DURING THE STAGES OF DEEP EXCAVATION CONSTRUCTION

In the realm of geotechnical engineering, deep excavation projects face intricate challenges, especially concerning the stability of barrette walls, which are highly susceptible to deformation and stress at their joints. This study focuses on evaluating the deformation and force behavior of barrette wall joints at the position of greatest deformation. The Finite Element Method (FEM) is utilized to simulate the behavior of these structures under various load conditions. The Analysis of Variance (ANOVA) method is employed to statistically analyze the FEM data, assessing the impact of different factors on deformation and force distributions within the barrette wall joints. The specific objective of this study is to determine the statistical significance of the observed deformations and understand the influence of construction stages on joint integrity. This methodological synergy enhances the predictability of engineering assessments and ensures that design and construction decisions are grounded in solid empirical evidence. The study's findings emphasize the importance of precise monitoring and advanced predictive techniques to mitigate potential risks associated with deep excavations, particularly at critical joint locations. The results indicate that the deformation patterns are primarily influenced by the geometrical setup of the walls and the mechanical properties of the soils. The greatest deformations were typically observed where the wall joints experienced the highest bending moments and shear forces, conditions exacerbated by unfavorable soil mechanics and hydrostatic pressures. The clear and consistent increase in total displacement highlights the progressive destabilization of the wall as the excavation depth increases. By integrating ANOVA with FEM, this study contributes to enhancing safety and efficiency in deep excavation projects by ensuring that decisions are grounded in empirical evidence

Synthesis and Optical Characterization of Dye Doped in Ormosil Nanospheres for Bioapplications

Dye-doped ORMOSIL (organically modified silicate) nanoparticles (NPs) have significant advantages over single-dye labeling in signal amplification, photostability and surface modification for various biological applications. The dyes: Rhodamine 6G (R6G) and Rhodamine B (RB) were successfully incorporated into ORMOSIL nanoparticles fabricated by micellar nanochemistry from Trimethoxysilane CH$_3$Si(OCH$_3$)$_3$ precursor. The optical characterization of dye-doped ORMOSIL NPs was studied in comparison with it’s of free dye in solution. The results shown that the photostability of ORMOSIL dye doped nanospheres is much improved in comparison with it’s of dye in solution. Other studies of the photophysical properties such as anisotropy, fluorescence lifetime and energy transfer were also done

CÁ MÚ GIỐNG VÀ BẢO VỆ BÃI GIỐNG Ở ĐẦM THỊ NẠI, VỊNH QUY NHƠN VÀ ĐẦM CÙ MÔNG

The wild grouper fingerling have provided the important seed source for the development of commercial fish farming. Among the wild grouper fingerling collected in the Thi Nai lagoon, Quy Nhon bay (Binh Dinh) and Cu Mong lagoon (Phu Yen), 7 species of grouper have been identified as Banded grouper (Epinephelus amblycephalus), Yellow grouper (E. awoara), Longtooth grouper (E. bruneus), Malabar grouper (E. malabaricus), Sixbar grouper (E. sexfasciatus), Orange-spotted grouper (E. coioides) and grouper (Epinephelus sp.); in which three species of Longtooth grouper, Malabar grouper and Orange-spotted grouper were endangered in Red List Categories Criteria of IUCN as VU and NT. The Malabar grouper seed makes up a high proportion of over 30%. The total length of the juveniles is different between species, ranging from an average of 25.0 mm to 116.82 mm; Orange-spotted grouper is 112.48 mm in total length; four grouper species Banded grouper, Yellow grouper, Longtooth grouper and Malabar grouper are longer than 30 mm in total length with 31.96, 32.23, 33.78 and 33.86 mm respectively. The Sixbar grouper and grouper (Epinephelus sp.) are smaller than 30 mm. The catching of grouper fingerling is distributed in wide area, along the bank, mangroves in the lagoon, along the western shore of the Quy Nhon bay, from Ghenh Rang to the southern part of the coast and along the Cu Mong lagoon (from south to southwest). The production of grouper seed fluctuates irregularly, 3 - 4 million seeds per year for highest yields, alternating with very low yields. The protection of nursing grounds is necessary with the solution of selective catching and limiting artisanal fishing.Cá mú giống khai thác tự nhiên đã cung cấp nguồn giống quan trọng cho việc phát triển nuôi cá thương phẩm. Nguồn cá mú giống khai thác tự nhiên ở vùng đầm Thị Nại, vịnh Quy Nhơn (Bình Định) và đầm Cù Mông (Phú Yên) đã xác định được 7 loài là cá mú chấm vạch (Epinephelus amblycephalus), cá song gio (E. awoara), cá song nâu (E. bruneus), cá mú điểm gai (E. malabaricus), cá mú sau sọc (E. sexfasciatus), cá mú mè (E. coioides) và cá song (Epinephelus sp); trong đó có ba loài là cá song nâu (E. bruneus), cá mú điểm gai (E. malabaricus) và cá mú mè (E. coioides) là những loài được IUCN xếp ở mức nguy cấp bậc VU và NT. Con giống cá mú điểm gai chiếm tỉ lệ khá cao trên 30%. Chiều dài toàn thân trung bình cá giống của các loài khác nhau, từ 25,0 - 116,82 mm; cá mú mè  có chiều dài toàn thân lớn nhất đếm 112,48 mm, ba loài cá mú chấm vạch, cá song gio và cá mú điểm gai có chiều dài lớn hơn 30 mm tưong ứng là 31,96; 32,23; 33,78 và 33,86 mm. Hai loài còn lại là cá mú sáu sọc và cá song đều có kích thước nhỏ hơn 30 mm. Vùng khai thác cá mú giống khá rộng; dọc theo các cồn, dãi cây ngập mặn trong đầm Thị Nại, ven bờ phía bắc lên phía tây của vịnh Quy Nhơn; nơi tập trung khai thác ở ven gần bờ phía tây vịnh, từ Ghềnh Ráng kéo dài vào đến khu vực phía nam và vùng dọc bờ của đầm Cù Mông (từ phía nam đến tây nam). Sản lượng khai thác các mú giống biến động khá thất thường, năm có sản lượng cao lên đến 3 - 4 triệu con/năm, xen kẽ có năm sản lượng rất thấp. Việc bảo vệ bãi giống là cần thiết với các giải pháp khai thác có chọn lọc và hạn chế khai thác tận thu