Energy requirements have increased dramatically due to industrialization, economic, and population growth. To meet this demand, and solve its challenges, such as climate change, renewable energies do play an important role. This research work aims at selecting the best renewable energy projects using a hybrid decision-making framework from environmental, economic, technical, and social aspects at a sub-national level. In this regard, a new hybrid fuzzy multi-criteria decision-making model is deployed in which Vise Kriterijumska Optimizacija I Kompromisno Resenje, distance from average solution, and additive ratio assessment methods are used. In addition, for the weighing of criteria, Fuzzy Shannon’s entropy is used. Furthermore, the North Khorasan province is nominated as a sub-national study area. The results show that among 30 sub-criteria, social acceptance, net-presented cost, and noise were the top three with weights of 0.1105, 0.1003, and 0.0988, respectively. Solar energy projects also accomplished high ranks with an overall score of roughly 0.22. After that, small hydropower got second place with a score of 0.187. Moreover, the ranking of cities indicates that Jajarm was the most suitable location for implementing renewable energy development with a score of 0.14. Finally, sensitivity analysis was carried out to show that the mathematical model possessed good robustness.

A technical–economic assessment was carried out in this study to determine the possibilities for wind and solar power generation in Afghanistan’s Helmand province. The results showed that most of the province has a solar irradiance of over 400 W/m², and also showed that wind and solar power generated in the province can be up to twice as cheap as the official price of renewable power in Afghanistan. The most suitable site for solar and hydrogen production was found to be Laškar Gāh, where solar and hydrogen can be produced at a cost of 0.066 $/kWh and 2.1496 $/kg-H₂, respectively. In terms of wind power production and hydrogen production from wind, the most suitable site was Sangīn, where wind power and hydrogen could be produced at costs of 0.057 $/kWh and 1.4527 $/kg-H₂, respectively. Despite the high potential of wind and solar energy in the Helmand province, the most suitable place in this region to produce hydrogen from wind/solar energy was evaluated from technical, economic, and environmental perspectives with the Multi-Criteria Decision-Making (MCDM) method. The Stepwise Weight Assessment Ratio Analysis (SWARA) method was used for weighting criteria and the Weighted Aggregated Sum Product Assessment (WASPAS) method was used to prioritize locations. The results show that Sangīn is the most suitable place for the construction of a wind hydrogen power plant and Laškar Gāh is the most suitable place for the construction of a solar hydrogen power plant.

Many rural women, who are faced with the challenges of low rural incomes and gender inequality, improve their role in the farming system based on participation in the agricultural value chain thus enhancing agricultural productivity, household income and sustainable development. This study investigates the factors which affect participation in the production of cassava in Dak Lak Province and decisions in relation to the cassava value chain from a gender perspective. Data were obtained through a questionnaire-based survey of 300 household farmers, in-depth interviews with key informants, and focus group discussions. Probit and ordinary least squares regression models in a two-stage Heckman model were adopted to determine the factors affecting females’ decisions to participate in cassava cultivation, their level of participation and their participation in other stages of the cassava value chain. The survey results show that men are prominent in all stages of cassava production but there is a more equal gender dynamic in both cassava production participation decisions and decisions relating to the quantity of cassava to be supplied for commercial purposes. This article draws attention to the continuing role challenges of female smallholder farmers, but also shows how women’s empowerment is contingent on equity dynamics in the household as well as social norms in the community and wider society.

In the various protected areas such as nature reserves and national parks in Vietnam, ranger patrols are crucial for protecting forest resources against the increasing threats from fringe communities. Previous studies have investigated ranger patrol efforts (RPEs) in conservation areas using conventional measures in terms of illegal activities encountered, but there has been little research into indices related to RPEs in the field, both worldwide and particularly in Vietnam. This paper explores various indices of RPEs and other aspects of forest patrolling at a local level. The number of rangers and patrol-days strongly influences the distance walked and the number of patrol-hours. However, neither the rainy season nor the Lunar New Year festival had any significant effect on patrol efforts, nor was there any effect on the relative altitude covered or the speed of patrolling during the long Lunar New Year vacation. Management responsible for protecting forest areas needs to consider the full scope of rangers’ efforts and identify the qualities of motivated staff. Our findings suggested ways in which rangers’ capacity to promote conservation may be assessed in the future.

In Vietnam, most protected areas are guarded and their natural resources are conserved by forest rangers, who carry out their law enforcement duties from forest stations. Previous research projects have been undertaken on law enforcement performance during traditional patrolling in most protected areas; however, insights into patrolling efforts at the local level, as a part of protection activities, have been significantly missing. The aim of this paper was to compare the law enforcement performance of rangers at two forest stations in the Pu Hu Nature Reserve (NR). These forest rangers face different challenges and illegal activities, depending on local conditions, which means that their law enforcement activities can vary widely. The results provided initial insights into the different variables of law enforcement performance and illegal encounters at the local level. The number of illegal encounters and distance walked were not significantly different between the two forest stations, unlike other variables, such as relative altitude, walking speed, and patrol hours. The ratios of illegal encounters to relative altitude and to speed at the Nam Tien Forest Station were higher than the equivalent findings at the Trung Thanh Forest Station due to differences in terms of the patrolling hours and distance walked between the two forest stations. Action to improve conservation is essentially a matter of implementing conservation planning in parallel with the current situation. Undoubtedly, the successful management of forests by stations in a protected area will be indicated by a positive law enforcement performance.