Judul: Feasibility Analysis of Household Plastic Waste Management and Processing into Paving Blocks (Case Study: Kebon Kopi Village, Cibanteng Village, Bogor Regency)
Abstrak: Rumah tangga yang terletak di Kampung Kebon Kopi terbiasa membakar sampah plastik akibat tidak adanya Tempat Pembuangan Akhir Sementara (TPAS). Untuk itu, kegiatan pengangkutan sampah plastik rumah tangga untuk diolah menjadi paving block merupakan salah satu bentuk implementasi konsep 3R (Reduce, Reuse, Recycle) yang dapat mengatasi permasalahan tersebut. Penelitian ini bertujuan untuk mengestimasi kesediaan masyarakat membayar jasa pengelolaan (iuran) sampah plastik rumah tangga, menganalisis kelayakan finansial agar usaha yang dilakukan dapat berjalan secara layak, serta mengetahui dampak ekonomi dan lingkungan yang dapat timbul. Metode yang digunakan meliputi Contingent Valuation Method (CVM) melalui Willingness to Pay (WTP), analisis kelayakan usaha dengan Net Present Value (NPV), Net Benefit Cost Ratio (BCR), Internal Rate of Return (IRR), dan Payback Period (PP) sebagai indikator, serta analisis deksriptif. Hasil penelitian mengindikasikan bahwa nilai rata-rata WTP rumah tangga belum mampu untuk mendorong mereka melakukan pemilahan sampah, sehingga penetapan iuran berdasarkan nilai WTP minimum dipilih sebagai alternatif yang paling sesuai. Selain itu, hasil analisis kelayakan finansial skenario II dengan menerapkan iuran pengangkutan sampah rumah tangga menunjukkan bahwa proyek pengolahan sampah plastik menjadi paving block layak dijalankan. Terdapat juga potensi dampak yang timbul berupa munculnya lapangan kerja baru dan pengurangan emisi di udara., Households in Kebon Kopi Village are accustomed to burning plastic waste due to the absence of a Temporary Final Disposal Site (TPAS). Therefore, the activity of transporting household plastic waste to be processed into paving blocks is one form of implementing the concept of 3R (Reduce, Reuse, Recycle) that can address this problem. This research aims to estimate the willingness of the community to pay for household plastic waste management services (fees), analyze the financial feasibility to ensure that the business conducted can operate properly, and identify the potential economic and environmental impacts. The methods used include the Contingent Valuation Method (CVM) through Willingness to Pay (WTP), business feasibility analysis using Net Present Value (NPV), Net Benefit Cost Ratio (BCR), Internal Rate of Return (IRR), and Payback Period (PP) as indicators, as well as descriptive analysis. The research results indicate that the average value of WTP of households is not yet able to encourage them to sort waste, so the determination of fees based on the minimum WTP value is chosen as the most appropriate alternative. Furthermore, the results of the financial feasibility analysis for scenario II which includes the implementation of household waste transportation fees indicate that the project of processing plastic waste into paving blocks is feasible. There is also the potential for impacts such as the emergence of new job opportunities and the reduction of air emissions.
Keyword: Dampak Ekonomi, Dampak Lingkungan, Iuran Sampah Rumah Tangga, Kelayakan Finansial, Economic Impact, Environmental Impact, Household Waste Fees, Inancial Feasibility

Judul: Alternative Analysis of Household Non-Organic Waste Management by The Community in Kebon Kopi Village, Bogor Regency
Abstrak: Sampah menjadi masalah utama di seluruh dunia terutama pada masalah timbulan dan pengelolaannya. Pengelolaan sampah sebaiknya menerapkan prinsip 3R yang berkelanjutan, sedangkan pengelolaan sampah di Kampung Kebon Kopi masih belum menggunakan prinsip 3R dan TPS juga tidak layak. Masyarakat banyak yang membuang sampah ke lahan kosong maupun dibakar. Tujuan dari penelitian untuk mengetahui timbulan sampah anorganik di Kampung Kebon Kopi, menganalisis faktor pendorong dan penghambat dalam membuang sampah anorganik yang dihasilkan ke lingkungan, dan menganalisis alternatif pengelolaan sampah anorganik rumah tangga yang dapat diterapkan di Kampung Kebon Kopi. Penelitian dilakukan di Kampung Kebon Kopi, Desa Cibanteng, Kabupaten Bogor. Metode yang digunakan adalah SNI-19-3964-1994, analisis deskriptif dan MCDA. Hasil penelitian menunjukkan timbulan sampah anorganik rumah tangga adalah 14.701,68 Kg/Tahun. Hasil estimasi total nilai ekonomi dari timbulan sampah anorganik rumah tangga Kampung Kebon Kopi, Kabupaten Bogor dengan pendekatan harga jual bank sampah adalah Rp 20.865.050/tahun. Komposisi sampah anorganik terbanyak adalah plastik kemasan dengan presentase 26,5%. Faktor yang mempengaruhi masyarakat Kampung Kebon Kopi dalam membuang sampah dibagi menjadi dua, yaitu ada faktor pendorong dengan aspek perilaku yang mendominasi masyarakat Kampung Kebon Kopi sebesar 46%, sedangkan untuk faktor penghambat mendominasi adalah aspek ekonomi sebesar 48%. Alternatif kebijakan yang dapat diprioritaskan adalah penjualan produk kreatif ecobrick di Kampung Kebon Kopi. Urutan alternatif pengelolaan sampah anorganik rumah tangga setelah ecobrick adalah pembuatan bank sampah dan pengelolaan dengan pengepul., Waste is a major problem throughout the world, especially in the problems of its generation and the management. Waste management should apply sustainable 3R principles, however the waste management in Kampung Kebon Kopi still does not implement the 3R principle as well as the temporary landfill is also not proper. Many people still dispose of their waste on vacant land or burned the waste. The need for effective non-organic waste management in Kebon Kopi Village is subsantial. The purpose of this study was to determine the generation of non-organic waste in Kampung Kebon Kopi, analyze the driving and inhibiting factors in disposing of non-organic waste that generated to the environment, and analyze alternative household non-organic waste management that can be applied in Kampung Kebon Kopi. The research was conducted in Kebon Kopi Village in Ciampea District. The methods used in this research are SNI-19-3964-1994, descriptive analysis and MCDA. The results showed that the generation of household non-organic waste was 14,701.68 kg/year. The results of the estimation of the total economic value of household non-organic waste generation in Kebon Kopi Village, Bogor Regency with a waste bank selling price approach is IDR 20,865,050/year. The most non-organic waste is plastic packaging waste 26.5%. The factors that influence the people of Kampung Kebon Kopi in disposing of waste are divided into two, namely there is a driving factor with behavior that dominates the people of Kampung Kebon Kopi by 46%, while the inhibiting factor dominates is the economic aspect by 48%. An alternative policy that can be prioritized is ecobrick creative products sales in Kebon Kopi Village. The next alternative for waste management after ecobricks is initiating waste bank and collaboration with waste collector.
Keyword: effectiveness, externality, household, Multi Criteria Decision Analysis, waste generation

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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