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All Journal Jurnal Gaussian Agrointek Journal of Nutrition Science
Tatang Sutisna
Agribisnis, Universitas Sultan Ageng Tirtayasa, Serang
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Health Professions Immunology & microbiology Medicine & Pharmacology Nursing Public Health Veterinary Other

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ESTIMASI RISIKO PORTOFOLIO SAHAM PERUSAHAAN PERKEBUNAN DI BURSA EFEK INDONESIA MENGGUNAKAN VALUE AT RISK NON-NORMAL Aulia Ikhsan; Tatang Sutisna; Siti Widiati
Jurnal Gaussian Vol 12, No 1 (2023): Jurnal Gaussian
Publisher : Department of Statistics, Faculty of Science and Mathematics, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/j.gauss.12.1.146-158

Abstract

Stock investment portfolio aims to minimize the investment risk. However, problems of the portfolio formation are determining funds allocation for each stock and measuring its risk. Fund allocation is determined using the Mean-Variance Efficient Portfolio method, while risk measurement is carried out using Value at Risk (VaR). Nevertheless, problem on VaR is determining a fit distribution which would be involved to obtain quantile values at certain probability. This study discusses way of funds allocation determination and VaR value calculation that is aimed to analyze their impact in estimating the VaR value. The study used stock price return rate data of plantation companies listed on Indonesia Stock Exchange such as Astra Agro Lestari Tbk. (AALI), BISI International Tbk. (BISI), and PP London Sumatra Indonesia Tbk. (LSIP). The result showed BISI stock has high volatility so that its funds allocation is relatively smaller. The distribution identified for portfolio return rate is Logistics Distribution with the estimated parameters  0.0001187447 and 0.008810698. Portfolio VaR value at the 95% confidence level is -0.02582382. We conclude the determination of funds allocation does not minimize risk and the calculation of VaR with distributions do not match the data result a relatively higher VaR value.
Analysis of Oil Palm Farmer Households Food Security and Nutrition Based on the Share of Food Expenditures and Energy Consumption Siti Widiati; Tatang Sutisna; Aulia Ikhsan; Suherman Suherman
Journal of Nutrition Science Vol 4, No 1 (2023): May, 2023
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jns.v4i1.7647

Abstract

Compared to farmers who cultivate food and horticultural commodities, oil palm farmers have different business characteristics and incomes. The income of the oil palm farming farmer will affect the food security of the farmer's household family. This study aims to determine the level of food security in the households of smallholder oil palm plantation farmers through a review of the share of food expenditure as well as energy adequacy and minimum energy consumption per capita. The research uses a quantitative descriptive method using structured interview data collection techniques and survey techniques. The respondents were oil palm farmer households who joined oil palm farmer groups in Cipuendeuy Village, Malingping District, Lebak Regency, Banten Province. Quantitative data analysis uses analysis of the Adequacy of Energy Rate (AKE) and Adequacy of Protein (AKP), to analyze the level of household food security. Analysis of the share of food expenditure showed the largest food expenditure of households of oil palm farmers was allocated for grains as much as 31.3%, while the smallest food expenditure was tubers at 1.59%. Based on the share of food expenditure, households of oil palm farmers are in a food secure condition, with 75% of households with a share of food expenditure <60%. The average household energy consumption of oil palm farmers is 1,707.39 kcal per capita/day with a household energy adequacy level of 83.79%. The average protein consumption per capita/day is 80.79 grams with a protein adequacy level of 80.63%. Analysis of the level of food security shows that 41.66% of households are at the level of food secure, 33% are at the level of food insecure, 8.33 are at the level of food vulnerability and 16.66% of households are food insecure.
INCENTIVE AND DISINCENTIVE FOR PROTECTION OF SUSTAINABLE FOOD AGRICULTURAL LAND IN CILEGON CITY Sirajuddin Sirajuddin; Cep Jandi Anwar; Tatang Sutisna; Asep Ridwan
AGROINTEK Vol 17, No 2 (2023)
Publisher : Agroindustrial Technology, University of Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/agrointek.v17i3.14104

Abstract

This study examines the application of sustainable food on agricultural land in Cilegon City. This study also analyzes the factors contributing to land conversion, productivity issues, and incentives and disincentives for the protection of sustainable food agricultural land in Cibeber, Jombang, and Purwakarta districts. In Cilegon city, most of the sustainable food agricultural land areas are not owned by the local government but by citizens. This condition makes the land vulnerable to being converted by landowners for non-agricultural uses. The existence should be strengthened with space utilization control instruments as a technical rule to prevent agricultural land conversion from developing and violating the spatial designation determined in the spatial plan. This study uses a parallel mixed method namely in the form of spatial methods and qualitative methods. This study found the factors that determine agricultural incentives and disincentives in the three districts in Cilegon City so that these factors can be used in determining the types of incentives and disincentives influencing land owners to defend land his farm. The factors obtained are derived from the variable based on the literature review synthesis. The variable is asked to the respondents until the variables are consensus. The results showed some economic and non-economic factors that determine agricultural land conversions, such as farmers’ family necessities of life, housing development, and low agricultural land productivity. Some incentives for farmers can be supplied by providing services and infrastructure to support farmlands, such as irrigation, water jet pump, fertilizers and seeds, and marketing aid to protect agricultural land from conversion. Some disincentives, such as higher taxes and tighter building permits, should be imposed on agricultural land conversion. This study provides recommendations to protect sustainable food agricultural land. Furthermore, it promotes detailed agrarian reform and equalizes perceptions among Regional Apparatus Organizations. It also disseminates information to the community and updates the mapping of water sources. Finally, it promotes the issuance of local government law of Protection of Sustainable Food Agricultural land.
Co-Authors Anwar, Cep Jandi Asep Ridwan Aulia Ikhsan Sirajuddin Sirajuddin Suherman, Suherman Widiati, Siti