Judul: Persepsi Peternak terhadap Limbah dan Minat Pengolahan Limbah Peternakan Sapi Perah
Abstrak: Usaha peternakan sapi perah menghasilkan susu sebagai produk utama dan juga menghasilkan limbah peternakan sebagai hasil sampingan. Keputusan dalam melakukan pengelolaan limbah dipengaruhi oleh persepsi dan minat. Tujuan penelitian ini adalah untuk mengetahui persepsi peternak terhadap limbah dan pengelolaan limbah. Responden penelitian ini berjumlah 50 orang yang terdiri dari 21 orang yang tidak mengelola dan membuang limbahnya, 3 orang yang membuang limbahnya langsung ke lahan pertanian, 9 orang yang mengelola menjadi kompos dan 17 orang yang mengelola menjadi biogas. Data yang diambil terdiri dari karakteristik internal, eksternal dan persepsi peternak. Data diolah menggunakan analisis rank spearman. Hasil analisis menunjukan bahwa nilai persepsi peternak tergolong tinggi yang artinya peternak menganggap limbah memiliki nilai manfaat. Persepsi peternak memiliki nilai positif dan berhubungan nyata terhadap teknologi pengelolaan limbah dengan tingkat pendapatan peternak
Keyword: limbah sapi perah, minat, persepsi

Judul: Farmers' Perceptions, Interests, and Implementation of Waste and Waste Management in Sheep Farming in Cisarua Village
Abstrak: Usaha peternakan yang banyak dikembangkan oleh masyarakat adalah usaha peternakan domba. Usaha peternakan domba menghasilkan limbah dan akan berdampak negatif jika tidak dimanfaatkan serta dikelola secara optimal. Persepsi dapat memengaruhi keputusan dalam melakukan pemanfaat dan pengolahan limbah. Penelitian ini bertujuan menganalisis persepsi, minat dan implementasi peternak terhadap limbah dan pengolahan. Responden penelitian ini berjumlah 42 orang dengan kriteria yang sudah ditentukan. Data yang diambil terdiri atas karakteristik persepsi, minat dan implementasi peternak. Data di analisis menggunakan analisis deskriptif dan uji rank spearman. Hasil analisis menunjukkan bahwa persepsi peternak terhadap limbah tergolong baik yang artinya peternak menganggap bahwa limbah memiliki nilai manfaat. Minat peternak terhadap pengolahan tergolong sedang. Implementasi yang dilakukan peternak dengan memanfaatkan limbah secara langsung tanpa adanya pengolahan terlebih dahulu. Persepsi peternak berhubungan dengan usia, skepemilikan ternak, akses informasi., Sheep farming was a common practice among the community. However, this activity produced waste that could have negative consequences if not utilized and managed optimally. Perception plays a significant role in influencing decisions regarding waste utilization and processing.This research aimed to analyze the perception, interest, and implementation of sheep farmers towards waste and its processing. The study involved 42 respondents who met the predetermined criteria. Data was collected on the characteristics of perception, interest, and implementation of the farmers. Data analysis was conducted using descriptive analysis and Spearman's rank test.The results indicated that the farmers had a good perception of waste, meaning they recognized its potential value. However, their interest in processing waste was only moderate. The implementation observed was that farmers directly utilized the waste without any prior processing. The study found that farmers' perception was related to their age, livestock ownership, and access to information
Keyword: domba, limbah, Minat, Persepsi

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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