An Overview of Sustainable Ocean Resources for Socio-economic Development in Vietnam

Vietnam is one of the nation with long coastal with many valuable resources, which is the basis for the economy development from the ocean-based activities. This paper outlined the main maritime resources and their contribution to the socio-economic development in Vietnam. The raw data was collected from the readable sources such as General Statistics Office of Vietnam, Vietnam meteorological and meteorological data center…. as well as from the practical investigation. This raw data was processed and analyzed in order to have a general view on the majority marine resources in Vietnam. The results showed that there were 5 main resources (oil, fisheries, natural hydrate, green energy, and tourism) from the ocean, which significantly contribute to the economy development of Vietnam. The highest contribution of the oil value to the GDP was witnessed in 2011 with 26.6% of the GDP. While the value of the fisheries and tourism increased every year, the natural hydrate and energy from the ocean are still young areas, however, they come one step closer to the exploitation, which can greatly contribute to the Vietnam economy growth. With these valuable resources from the sea, Vietnam need to have reasonable policies and strategies for the management, exploitation, and export in order to able to effectively use of these resources for the sustainable economy development. Keywords: Ocean resources, sustainable development, fisheries, crude oil exploitation DOI: 10.7176/JRDM/69-05 Publication date:September 30th 202

Improving the Performance of Concatenated Convolutional Codes in the Error Floor Region

The idea of the Bit-Interleaved Coded Modulation with Iterative Decoding (BICM-ID) is applied to classic schemes of both parallel and serial concatenation of convolutional codes (PCCC and SCCC) with Binary Phase Shift Keying (BPSK) modulation. Simulation results show that slightly modified PCCC and SCCC schemes provide significant improved performance of the encoder in the error floor region in terms of much lower bit error rate (BER)

Socio-Cultural Factors Challenging Development Interventions in Cattle Production in the Remote Areas of Vietnam

The northwest highlands of Vietnam are characterized by high altitude, low infrastructure, and low population densities composed of a wide diversity of different ethnic groups. Their socio-cultural characteristics strongly influence their lifestyle and production systems, including agricultural activities. The majority of these people have suffered from slow economic development, with the highest poverty rate in the country. This is a real need for plausible interventions where behavioral changes of smallholders throughout local value chains would be a critical foundation. Our project implemented in this context of development in the Northwest highlands of Vietnam aims to understand the role of socio-cultural factors in cattle production systems in order to propose and examine feasible technical and marketing interventions to improve local grazing-based cattle production. Data on farmers and other actors (collectors, slaughterhouses, retailers and consumers) in local cattle value chains of two selected provinces (Son La and Dien Bien) were collected at the beginning of the project via a baseline survey. In addition, different group discussions with farmers were conducted until the end of the project to monitor the project’s progress and changes created through its interventions. We found that such behavioral changes cannot be motivated by development interventions per se without integrating an understanding of socio-cultural factors (i.e. ethnicity, geographical location and grazing-practices)

Local Entrepreneurship in Vietnam’s Rural Transformation. A Case Study from the Mekong Delta

Empirical evidence from developing countries has illuminated the vital role private business development plays in rural transformation and the creation of off‐farm livelihoods. Since ‘renovation’ (Đổi mới) was promulgated by the Vietnamese Communist Party in 1986, Vietnam has experienced rapid growth and development through the transition from state to market. While de‐collectivization and the return to householdbased rural production reduced poverty and increased growth, entrepreneurship development in the form of Small and Medium Enterprises(SME) has emerged as a strong agent for socio‐economic diversification. The Mekong Delta, located in the Southwest of Vietnam, is a rural setting traditionally reliant on agriculture but has been facing rapid rural transformation over the past three decades. Against a background of agrarian modernization, economic liberalization, international integration and environmental change, this report explores the diversity of entrepreneurial activities and SME development in typical peri‐urban and rural settings of the region. Empirical findings on the trajectory of rural entrepreneurship development, enterprise characteristics, and the social profiles of business owners are presented. Beyond that, changes brought about by rural enterprises for livelihood diversification, social security and labor market dynamics are disaggregated and discussed by different business types and corresponding modus operandi (growth‐oriented vs. livelihood‐oriented enterprises). Finally, the results are contrasted with current government notions of promoting SMEs development as a driver of economic growth. Diverging from the government’s vision for boosting SME development in the context of rural industrialization, the large majority of private business establishments in the Mekong Delta are micro‐enterprises which operate at subsistence levels, while growth‐oriented SMEs remain the exception. Consequently, there is a need to reconsider policy formulation for more sustainability in the rural SME sector

Bit-Interleaved Coded Modulation Systems with Iterative Decoding and Partial Reusing QAM Signal Points

A new method of reusing a subset of an M-QAM signal constellation is presented for Bit-Interleaved Coded Modulation systems with Iterative Decoding (BICM-ID). In addition to the remapping of high-energy signals to low-energy signals in order to save the average signal energy as a shaping technique known so far, a new scheme of remapping low-energy signals to high-energy signals is proposed in order to gain the equivalent distance when decoding bits, often called the Squared Euclidean Weights (SEW). Numerical analysis and simulation results show that the partial reuse of the signals in the BICM-ID system with 16-QAM can improve the system performance in terms of lowering the bit error rate in the error floor region

Local Entrepreneurship in Vietnam’s Rural Transformation. A Case Study from the Mekong Delta

Empirical evidence from developing countries has illuminated the vital role private business development plays in rural transformation and the creation of off‐farm livelihoods. Since ‘renovation’ (Đổi mới) was promulgated by the Vietnamese Communist Party in 1986, Vietnam has experienced rapid growth and development through the transition from state to market. While de‐collectivization and the return to householdbased rural production reduced poverty and increased growth, entrepreneurship development in the form of Small and Medium Enterprises(SME) has emerged as a strong agent for socio‐economic diversification. The Mekong Delta, located in the Southwest of Vietnam, is a rural setting traditionally reliant on agriculture but has been facing rapid rural transformation over the past three decades. Against a background of agrarian modernization, economic liberalization, international integration and environmental change, this report explores the diversity of entrepreneurial activities and SME development in typical peri‐urban and rural settings of the region. Empirical findings on the trajectory of rural entrepreneurship development, enterprise characteristics, and the social profiles of business owners are presented. Beyond that, changes brought about by rural enterprises for livelihood diversification, social security and labor market dynamics are disaggregated and discussed by different business types and corresponding modus operandi (growth‐oriented vs. livelihood‐oriented enterprises). Finally, the results are contrasted with current government notions of promoting SMEs development as a driver of economic growth. Diverging from the government’s vision for boosting SME development in the context of rural industrialization, the large majority of private business establishments in the Mekong Delta are micro‐enterprises which operate at subsistence levels, while growth‐oriented SMEs remain the exception. Consequently, there is a need to reconsider policy formulation for more sustainability in the rural SME sector

Porandra microphylla Y. Wan (Commelinaceae): A new distributional record for Vietnam

Porandra microphylla Y. Wan, is a newly recorded species for the flora of Vietnam. This species was collected from Lai Chau and Vinh Phuc province of the country. Morphologically, P. microphylla is closely related to Porandra scandens D.Y. Hong, but differs by its smaller and abaxially glabrous leaves and oblong or subglobose anthers

Neutron Yield from (γ, n) and (γ, 2n) Reactions following 100 MeV Bremsstrahlung in a Tungsten Target

The photonuclear reactions of (γ, xn) or (γ, xnp) types can be used to produce high-intensity neutron sources for research and applied purposes. In this work a Monte-Carlo calculation has been used to evaluate the production yield of neutrons from the (γ, n) and (γ, 2n) reactions following the bremsstrahlung produced by a 100 MeV electron beam on a tungsten target

Five lignans from the mangrove Rhizophora stylosa Griff.

Five lignans (-)-(7R,8S)-dihydrodehydrodiconiferyl alcohol (1), (7S,8R)-3,3¢,5-trimethoxy-4¢,7-epoxy-8,5¢-neolignan-4,9,9¢-triol (2), (+)-isolariciresinol (3), polystachyol (4), (+)-pinoresinol (5) were isolated from the mangrove plant Rhizophora stylosa Griff.. The chemical structures of these compounds were elucidated by analysis of their NMR spectra and compared with those reported references. All these compounds were isolated from this plant for the first time