Judul: Analisis Green Production Kacang Garing “Dua Kelinci” pada PT Dua Kelinci.
Abstrak: PT Dua Kelinci adalah salah satu industri pengolahan kacang tanah tertua di Indonesia dengan merek “Dua Kelinci”. PT Dua Kelinci memiliki program bukan sekedar mengutamakan bisnis semata, tetapi juga memberikan kontribusi ke lingkungan alam dan sosial. Isu lingkungan akan berpengaruh terhadap citra perusahaan sehingga dilakukan analisis green production. Tujuan penelitian : (1) Menganalisis kondisi green production kacang garing “Dua Kelinci” (2) Mengidentifikasi kriteria green production yang mempunyai dampak dalam kinerja perusahaan, dan (3) Mengusulkan perbaikan green production yang dapat dilakukan oleh PT Dua Kelinci. Metode yang digunakan ialah analisis Green Value Stream Mapping (GVSM) dan analisis deskriptif. Hasil analisis didapatkan bahwa penerapan kriteria green production yang meliputi green operating efficiency, perlindungan lingkungan, penggunaan sumberdaya yang efektif, dan kontribusi kepada masyarakat masuk dalam kategori baik. Perbaikan penerapan green production PT Dua Kelinci pada produksi kacang garing “Dua Kelinci” dapat dilakukan dengan merubah strategi dari hanya melakukan strategi reaktif menjadi menerapkan strategi responsif untuk mendapatkan keunggulan kompetitif.
Keyword: green production, green strategic, green value stream mapping

Judul: iKajian Produksi Bersih pada Kawasan Industri Penyamakan iiKulit di Garut
Abstrak: Leathers is one of livestock products that being expensive commodity today. Positively, leather tanning industry gives benefit to the peoples around industry, however, improper handling of wastes may pollutes the environment around tanning industrial estate. Cleaner production strategy is needed to minimize the wastes. This research was directed to identify the opportunity implementation of cleaner production strategy on leathers tanning industry at Sukagerang, Garut and to determine the possible alternatives of cleaner production options to increase production efficiency while minimizing the wastes. Analysis of Cleaner production conducted in three industries, PT ELCO Indonesia, PT Karya Lestari Mandiri, and PD Putra Setra. Quick Scan method used to analyzed the cleaner production. The results were then analyzed by using Exponential Method Comparison (MPE) and method of Analytical Hierarchy Process (AHP) to determine the priority of cleaner production application. Priority selection of cleaner production alternatives in leather tanning industry estate was analyzed based on the environmental criteria, benefits, construction, operation, and cost. The best alternative priority to be applied in leather tanning was controlling of water use then followed by trimming process before chemical treatment, breeders assisting, retribution for waste treatment, and the socialization of research results. In the case study of water use at PD Putra Setra, 87,800 Liters water can be reduce. While in the case study of trimming process at PT ELCO Indonesia, this alternative may result in the benefit to the company in the form of savings for the purchase of chemicals of 16.82% or equivalent to Rp 197,103.
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Judul: Dynamical System of Hepatitis B in Three Groups with Vaccination
Abstrak: The aim of this study is to modify the hepatitis B transmission model in three age groups involving vaccination from the model conducted by Zhoe and Zhang.The method used is to analyze the stability of the fixed point and its basic reproduction number (R_0). Performed stability analysis and numerical simulation to see population dynamics. Next, a sensitivity analysis of the parameters was carried out to see its effect on R_0. From the analysis obtained two fixed points, namely non-endemic and endemic fixed points. Non-endemic fixed points are locally asymptotically stable if R_0 <1 Meanwhile, the endemic fixed point is locally asymptotically stable if R_0 > 1. Hepatitis vaccination affects the number of susceptible population, because the more successful the vaccination, the smaller the number of susceptible populations so that the smaller the population will be infected.
Keyword: Dynamic, Hepatitis B, Vaccine, Mathematical model