Judul: Optimasi dan Perencanaan Produksi Industri Kerupuk Udang/Ikan di Perusahaan Kerupuk Indrasari, Indramayu Jawa Barat
Abstrak: Penelitian pada industri kerupuk udanglikan pabrik kerupuk Indrasari di Kabupaten Indramayu ini bertujuan untuk : 1) menentukan distribusi optimum kebutuhan bahan baku maupun bahan penunjang lainnya, agar industri kerupuk udanglikan dapat mencapai hasil yang diharapkan dengan memperhatikan faktor-faktor kendala yang membatasinya. 2) Melakukan analisis titik impas produksi dan analisis kelayakan usaha industri kerupuk udanglikan, serta memprediksikan pengeluaran serta keuntungan suatu perusahaan sehingga kemungkinan resiko kerugian dapat ditekan sekecil mungkin.
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Judul: Analisis kelayakan dan optimasi produksi industri kerupuk ikan di perusahaan kerupuk Indrasari, Indramayu, Jawa Barat
Abstrak: Industri kerupuk ikan merupakan salah satu industri yang menghasilkan produk makanan yang telah banyak dikenal dipasaran nasional maupun mancanegara, serta cukup digemari oleh sebagian besar konsumen. Industri kerupuk ini merupakan industri yang terus berkembang didaerah-daerah, mulai dari skala kecil dipedesaan hingga skala industri menengah. Melalui analisis kelayakan dan optimasi produksi pada industri kerupuk ikan diharapkan kegiatan industri kecil kerupuk ikan dapat mencapai sasaran yang diinginkan, dengan hasil yang optimal dimana tidak terjadi kekurangan atau kelebihan produksi akibat pengaruh internal maupun eksternal. Suatu perusahaan atau industri kerupuk dalam menjalankan produksinya sendiri juga harus mengetahui apakah usaha yang telah dijalankan itu layak atau tidak layak untuk diteruskan atau dikembangkan maka dalam pelaksanaan produksinya perusahaan tersebut harus memperhatikan dan memperhitungkan analisis biaya yang menyangkut kelayakan suatu perusahaan Penelitian ini bertujuan untuk menganalisis kelayakan produksi kerupuk ikan dengan metode Net Present Value (NPV), Internal Rate of Return (IRR) dan Benefit Cost Ratio (B/C Ratio), melakukan analisis titik impas produksi kerupuk ikan, dan menentukan kombinasi produksi yang optimum dari produksi kerupuk ikan kelas I dan istimewa sehingga dicapai keuntungan yang maksimum. Metode yang digunakan adalah analisis kelayakan yang meliputi analisis biaya pokok, analisis titik impas, analisis Net Present Value (NPV), analisis Internal Rate of Return (IRR) dan analisis B/C Ratio.
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Judul: Thermal Characteristics and Dynamics of Tropical Cyclone over Western North Pacific Ocean: A Case Study of Typhoon Songda (Chedeng) 2011
Abstrak: The frequent occasion of Tropical Cyclone (TC) over Western North Pacific (WNP) Ocean lies from 10˚N to 26˚N and 121˚E to 170˚E. Sources of TC development come from warm ocean temperature where latent heat is released during condensation processes and subsequently concentrated in the boundary layer. Relative humidity at 850-700 hPa is responsible to produce the most intense storm. Meanwhile, weak vertical wind shear between 850-200 hPa is one of the dynamical factors that lead to the development of TC. Pressure level of 850-200 hPa is chosen to minimize the thermodynamic effect in the lower troposphere. Typhoon Songda (Chedeng in the Philippines) or TSC lasted from May 18th to 30th, 2011 and strengthened into powerful Super Typhoon stage between May 24th and 27th. Long curving track and the exhibition of all sequences of TC life cycle, TSC is then considered as an ideal case of TC. The objective of the study with case of TSC is to investigate the role of thermal characteristics and dynamics on TC intensity. The research is carried out by using Advanced Research of Weather Research and Forecasting model (WRF ARW model) version 3.3. Two domains are employed in the model. The first domain situate from 02˚N to 40˚N and 118˚E to 149˚E and cover spatial resolution () of 33.1 km. The second domain situate from 09˚N to 27˚N and 119˚E to 132˚E with of 11 km. Timestep of the model () is 120 seconds. The model is supported by the following physical parameterization, i.e., Yonsei University Scheme (YSU) in the boundary layer, Kain-Fritsch scheme (KF) in the cumulus, and WRF Single-Moment 3-class scheme in the microphysics. Initial meteorological condition prior to the formation of the cyclone is generated using WRF ARW standard-release model. Sensitivity of the model output is obtained from a selected single-parameter change scenarios, namely, 10 % to 20 % decrease and increase of wind shear initial data at 850-200 hPa, and by 10 % to 20 % decrease of relative humidity initial data at 850-700 hPa. The result showed that the negative correlations between wind shear and intensity are found in wind shear scenarios. Wind shears of 10 ms-1 which lead to strengthening of the wind intensity in the early period of Typhoon development are found in wind shear scenarios. The effect of wind shear changes on wind intensity is statistically significant in the 20 % wind shear scenarios. During mature stage, weak wind intensity occurred when wind shear increase as given in the WRF standard-release and the 20 % decreasing scenario. Different situation is found in the 20 % increasing scenario where wind shear tend to weak and lead to strong wind intensity at this stage. Meanwhile, the reduction of moisture supply at 850-700 hPa resulting from 20 % decreasing relative humidity play a major role in the weakening of wind intensity and reduces mechanical energy of the cycle process as much as 300 J kg-1.
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