Judul: Perceptions of Farmer on the Private Forest Business  and the Contributions to Household Income: Case Study Private Forest in  Tegaldlimo Sub District, Banyuwangi Regency, Jawa Timur Province
Abstrak: Hutan rakyat adalah salah satu sumber daya alam memiliki potensi untuk berperan penting dalam pembangunan sektoral di suatu daerah. Usaha hutan rakyat terdiri dari empat sub sistem, yaitu sub sistem produksi, sub sistem pengolahan, sub sistem pemasaran, serta sub sistem kelembagaan. Perubahan pada satu sub sistem akan mempengaruhi sub sistem yang lain. Penelitian ini bertujuan untuk mengidentifikasi karakteristik petani hutan rakyat di Kecamatan Tegaldlimo, menganalisis persepsi petani terhadap usaha hutan rakyat, dan menganalisis kontribusi usaha hutan rakyat terhadap pendapatan rumah tangga. Metode yang digunakan adalah analisis deskriptif dengan menggunakan data kualitatif dan kuantitatif. Sampel yang dipilih sebanyak 32 responden menggunakan metode convenience sampling. Karakteristik petani hutan rakyat di Kecamatan Tegaldlimo didominasi dengan umur yang produktif, memiliki pendidikan yang tergolong sedang, pekerjaan utama didominasi oleh petani, sebagian besar petani tidak memiliki pekerjaan sampingan, memiliki jumlah tanggungan keluarga yang tergolong kecil, pengalaman lama bertani dalam kategori baru, sebagian besar petani memiliki lahan garapan hutan rakyat yang tidak luas, sebagian besar petani menerapkan pola agroforestri. Persepsi petani terhadap sub sistem produksi (62,50%), sub sistem pengolahan (78,13%), sub sistem pemasaran (56,25%), sub sistem kelembagaan (53,13%). Kontribusi pendapatan petani hutan rakyat terhadap pendapatan rumah tangga rata-rata sebesar 1,28%. Sebagian besar petani (90,63%) sudah memiliki pendapatan yang layak berdasarkan UMK Banyuwangi 2022.
Keyword: private forest, private forest business, sub system, perseption, income contribution

Judul: Kontribusi Pengelolaan Hutan Rakyat Terhadap Pendapatan Rumah Tangga Petani dan Analisis Kelayakan Usaha Hutan Rakyat. (Studi di Desa Babakanreuma, Kecamatan Sindangagung, Kabupaten Kuningan, Propinsi Jawa Barat)
Abstrak: According to Hardjanto (2000), income of community forest farmers in Java are still positioned as a by product and incidental. Range of income is not more than 10 % of total revenue and sought simply. It shows that the contribution of community forest have not become the foundation of households subsistence, so it is necessary to conduct a study about how is the contribution of community forests management to total household income and it’s feasibility, especially in the Village Babakanreuma, District Sindangagung, Kuningan Regency, West Java Province. The purpose of this study was to identify the system of community forests management and marketing, knowing the contributions community forests management to households total income as well as examine the linkage of effectiveness of community forests area to the households total income and to determine the feasibility of it’s businesses. Determination of the respondents conducted using stratified random sampling method in which the respondents were 36 people obtained from the slovin formula. This study uses a qualitative approach that conducted by survey method using questionnaire and supported by quantitative techniques. The results shows that the contribution of community forests management to the households income has been very visible, reinforced by the magnitude of the contribution value that become higher and increasing in strata. So that the farmers land area of community forest significantly affected their household income. From the data obtained, in 1st strata , the resulting contribution is Rp. 2,208,333.00 per year (7.79%), 2nd strata is Rp 3.800.000,00 per year (11.98%), and 3rd strata is Rp 5.500.000,00 per year (13.00%). Management of community forests is feasible to run on all three strata. These statements are based on the amount of NPV (Net Present Value) that is not negative, BCR (Benefit Cost Ratio) is greater than one and the IRR (Internal Rate of Return) is greater than the prevailing rates. NPV values in strata I, II and III is Rp 6.378.880,00; Rp 14.134.803,00 and Rp 3.985.918.00. Community forests management systems at the sites are still modest. The harvesting is still based on needs and not according to the Sengon plant cycle which is the staple in this village. The timber marketing is only done by a contract system or the middleman (tengkulak) / buyer and furthermore become the responsibility of the middleman / buyer it self.
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Judul: Construction of Strongly Optimal Binary Linear Code with Minimum Distance 9 and 11
Abstrak: A binary linear code of length n over q F is a subspace of n q F . A code has three parameters that attached to it, namely length, dimension, and minimum distance. A code with length n, dimension k and minimum distance d is often called [n, k, d ]-code. Usually, when two parameters are given, then we want to find a code that has the best value for the last parameter. Based on Gilbert- Varshamov bound, if a [n, k, d ]-code exists and can not be expanded, we call it a strongly optimal code. In this paper, we construct strongly optimal code with minimum distance 9 and 11. In constructing the code, we created a theorem and algorithm based on Gilbert-Varshamov bound before we implement the algorithm to MAPLE programming language. Because of computational limitations, the program can only construct up to k = 10 for d = 9 and k = 12 for d = 11.
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