This paper draws the process of water resources management of local communities by using the social capital point of view. By using a comparative case study, this research was conducted in two regions in Kepulauan Riau, Senggarang and Mantang. Social capital of local communities, such as norms, trust, beliefs, and gotong-royong play a significant role in the process of governing water resources in different ways. This paper contributes to the study of water resources management by recognizing the social capital of local communities. In practical terms, this study is also valuable to the practice of water resources management in the local context in Indonesia. The theoretical, methodological, and practical implications of the study are discussed.
To overcome the solid waste problem, many city governments initiate and facilitate waste banks. Various studies have sought citizen participation in waste banks, but there is little attention to understanding how the coexistence of social capital can encourage waste banks’ practice. This study, therefore, aims at examining the social capital of the urban communities in the business process of waste banks. We looked in-depth at the practice of six waste banks in Tanjungpinang City, Kepulauan Riau, Indonesia. A series of interviews were carried out on the stakeholders of waste banks, such as management, customers, citizens, and households. We suggest that a number of social capitals shape the business process of waste banks, including trust, norms, social networks, and gotong royong. This research has a novel for the study of community-based waste management by considering the urban community’s social capital. Our study also has a worthy recommendation to the local government in managing waste management by corroborating social capital.
Fault tree analysis (FTA) is frequently applied to deductively evaluate the safety systems of complex engineering systems such as chemical industries or nuclear facilities. To perform this analysis, generic data are commonly used due to the limitation of historical failure data of the system being evaluated. However, generic data have a degree of uncertainty and hence cannot represent the system's actual performance. In addition, generic data are not applicable to older components due to the aging process, which obviously degrades the reliability of those components. To deal with this limitation, another safety analysis method, called fuzzy fault tree analysis (FFTA), has been proposed. The purpose of this study is to apply FFTA to evaluate the performance of the primary cooling systems of G.A. Siwabessy Multipurpose Reactor (RSG-GAS). RSG-GAS is a research reactor, which belongs to the National Nuclear Energy Agency of Indonesia (BATAN). Expert justifications were used to evaluate the failure occurrences of basic events in the primary cooling system of the RSG-GAS through questionnaires. The assessment by experts is in the form of qualitative data, which are then converted into quantitative data by applying FFTA. Then, the top event probability generated from FFTA was applied to calculate the event probability using event tree analysis (ETA). It was obtained that the highest event probability was 4.304 × 10 −8 /year. Since it complies with The International Atomic Energy Agency (IAEA) specified core damage frequency (CDF) limit, i.e., not greater than 10 −5 /year of reactor operation, the reactor is safe to operate.
The growth of oil palm plantations in Indonesia is growing rapidly. Issues of oil palm plantations that are not environmentally friendly are continuously exposed. The purposes of this research are, 1) To determine the role of smallholder in managing oil palm plantations, 2) To analyse the status of sustainability of oil palm plantations, 3) To find sensitive attributes that affect the sustainability of smallholder oil palm plantation management. Analysis method is to answer the first objective which is done descriptively, the second objectives was conducted with MDS approach, with Rappalm, third objectives are to analyse attribute lever was conducted with Leverage analyse. The result of the research is that smallholders can cultivate oil palm plantations. The status of sustainability indicated a very sustainable status (80.41), meaning that economic factors and social factors leverage ecological factors to be sustainable. This means that smallholder should improve the pattern of oil palm crop farming, with lever attributes, namely tree planting among islands of oil palm (plot scale). The integration of sensitive attributes, with the economic dimension and social dimension, produced a research output which have provide solutions sustainability of the smallholder oil palm plantation.
The aims of this study are to determine the quality of natural flavor powder from shrimp waste and obtain new application technology for application of processing shrimp waste for natural flavor powder. This study using Completely Randomized Design non factorial. The treatment is adding wheat flour in three steps, they are without adding wheat flour (R0), adding wheat flour 1:1 (R1), and adding wheat flour 1:2 (R2) with three replications. This study results yield about 369.185%. Different quantity of wheat flour give effect to organoleptic value (flavor and aroma), the best treatment is R0 with flavor value is 4.17 and aroma value is 4.28%. Threshold value for taste is 8% at ratio 1:8 and threshold odor value for aroma is 12% at ratio of 1: 9. When dilution ratio is increase, the taste and aroma of shrimp in flavor powder is decreases until it is not detected. Shrimp flavor powder contains 17 types of amino acids, consisting of 9 essential amino acids and 8 non-essential amino acids. The highest essential amino acid is leucine which is equal to 0.362% and the highest non-essential amino acid is glutamate acid which is equal to 0.913%.
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