Judul: Analisis kelayakan finansial unit usaha pakan ayam broiler pada koperasi peternak unggas kujang lestari, Kabupaten Bogor
Abstrak: Dari informasi lapangan tim Pusat tudi Pembangunan IPB (1995) diketahui bahwa harga pakan ditentukan oleh Gabungan Pengusaha Makanan Ternak Indonesia (GMTI) dengan sistem kartel. Penentuan harga dengan sistem kartel ini menyebabkan harga pakan yang dibayar oleh peternak rakyat lebih tinggi daripada harga pakan yang dibayar oleh peternakan besar yang berafiliasi dengan pabrik pakan.
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Judul: Analisis Kelayakan Usaha Peternakan Ayam Broiler di Desa Lulut Kecamatan Klapanunggal Kabupaten Bogor
Abstrak: Usaha peternakan yang banyak diminati adalah peternakan ayam broiler karena memiliki permintaan yang tinggi. Kabupaten Bogor merupakan salah satu daerah sentra produksi daging ayam broiler di Jawa Barat. Penelitian ini bertujuan untuk (1) menganalisis kelayakan usaha ternak ayam broiler ditinjau dari aspek non finansial seperti aspek pasar, aspek teknis, aspek manajemen dan hukum, aspek sosial dan budaya serta aspek lingkungan (2) menganalisis kelayakan usaha ternak ayam broiler ditinjau dari aspek finansial (3) menganalisis tingkat kepekaan (sensitivitas) kelayakan usaha peternakan ayam broiler. Penelitian ini dilakukan pada bulan November sampai dengan Desember 2015 dengan menggunakan data primer dan sekunder. Data primer diperoleh dari wawancara langsung dengan pemilik peternakan dan data sekunder melalui internet dan literatur yang relevan. Adapun analisis yang digunakan yaitu analisis kualitatif dan kuantitatif, dimana analisis kualitatif dilakukan secara deskriptif menggambarkan sistem usaha dan aspek nonfinansial serta analisis kuantitatif yang digunakan yaitu analisis kelayakan finansial. Berdasarkan hasil analisis aspek non finansial dan finansial usaha peternakan ayam broiler layak untuk dilanjutkan, karena dilihat dari nilai NPV sebesar Rp632 149 173, Net B/C sebesar 3.23, IRR sebesar 71.68 persen dan PP sebesar 2.8 tahun, dengan discount rate 6.5 persen. Hasil analisis switching value menunjukkan usaha peternakan ayam broiler sangat sensitif terhadap kenaikan harga pakan sebesar 15.53 persen penurunan harga jual sebesar 47.42 persen, sedangkan kenaikan harga DOC sebesar 65.22 persen pada peternakan ayam broiler ini tidak sensitif.
Keyword: kelayakan, broiler, switching value

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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