Judul: The Effect of Government Support Program on The Adoption of Improved Feed Technology in Koperasi Peternak Sapi Cianjur Utara
Abstrak: Peranan subsektor peternakan dalam PDB tahun 2021 memberikan kontribusi positif sebesar 1,58 persen dengan pertumbuhan sebesar 0,34 persen (yoy) bagi perekonomian nasional. Peningkatan konsumsi susu dalam memenuhi kebutuhan susu dalam negeri dapat meningkatkan jumlah impor susu di Indonesia. Ketergantungan terhadap impor mendorong pemerintah melakukan upaya pengembangan usaha dengan kebijakan yang membantu peternak mengadopsi teknologi. Penggunaan teknologi pakan kualitas tinggi dapat meningkatkan produksi serta kualitas susu. Penelitian ini bertujuan menganalisis pengaruh program bantuan pemerintah terhadap adopsi teknologi pakan kualitas tinggi di KPS Cianjur Utara. Penelitian ini menggunakan metode analisis deskriptif, regresi logistik dan data primer yang diperoleh dengan wawancara dan kuesioner terdiri dari komponen adopsi teknologi, karakteristik sosial ekonomi, program bantuan pemerintah yang diakses peternak dari tahun 2019 hingga 2022. Hasil penelitian ini menunjukkan karakteristik peternak dalam kategori umur produktif, sebagian besar tamatan SD, peternak turut aktif dalam pendidikan informal, jumlah tanggungan lebih besar, jumlah sapi yang dimiliki kategori skala usaha kecil, luas kandang yang dimiliki sempit, peternak mendapatkan hijauan dari menanam sendiri dan pendapatan dalam kategori tinggi. Faktor tanggungan keluarga, sumber hijauan, program bantuan sapi, skema bantuan kredit dan kemudahan akses bantuan berpengaruh positif dan signifikan sementara faktor lahan kandang dan frekuensi bantuan berpengaruh negatif dan siginfikan terhadap adopsi teknologi., The role of the livestock subsector in GDP in 2021 contributed positively by 1.58 persen with growth of 0.34 persen (yoy) to the national economy. Theincrease in milk consumption in meeting domestic milk needs can increase the number of impor milk in Indonesia. Dependence on imports encourages the government to make efforts to develop dairy businesses with government policies that help farmers adopt technology to increase milk production. This study analyses the government support program's effect on adopting improved feed technology in the KPS Cianjur Utara. The method used is descriptive analysis, logistic regression and primary data obtained by interviews and questionnaires accessed by farmers from 2019-2022. The results of this study showed that farmers in the productive age category, primarily elementary school, actively participated in informal education, the number of dependents and the number of cows were more significant, the area of the stalled land was narrow, and forage food sourced from self-growing, and income was high. Factors of family dependents, forage sources, cattle support programs, credit support schemes and Support frequency has positive and significant. While the area of stall land and the frequency of government support have a negative and significant impact on technology adoption.
Keyword: Government Support, Improved Feed, Logistic Regression, Technology Adoption

Judul: The Effect of Socio-Institutional Factors on the Adoption of Teat Dipping Technology in Koperasi Peternak Sapi Cianjur Utara
Abstrak: Kontribusi subsektor peternakan dalam PDB sektor pertanian setiap tahunnya cukup tinggi dan berpengaruh terhadap pertumbuhan perekonomian nasional. Peningkatan konsumsi susu dalam memenuhi kebutuhan susu dalam negeri membuat peternak berupaya mengadopsi teknologi agar meningkatkan produksi dan kualitas susu. Tujuan dari penelitian ini menganalisis pengaruh faktor socio institutional terhadap adopsi teknologi celup puting yang dilakukan setelah pemerahan berfungsi untuk meningkatkan kualitas dan produksi susu sapi perah. Penelitian ini menggunakan metode analisis deskriptif dan regresi logistik yang diperoleh melalui wawancara dan kuesioner terdiri dari komponen adopsi teknologi, karakteristik sosial ekonomi serta socio-instutional pada aspek pelayanan kesehatan hewan, market orientation, stakeholder network yang didapatkan peternak dalam tiga tahun terakhir. Hasil analisis menujukkan karakteristik sosial ekonomi peternak mayoritas peternak berusia produktif, tingkat pendidikan SD, mengikuti pendidikan informal, memiliki anggota keluarga lebih besar dari tiga orang, memiliki hewan ternak lebih kecil sama dengan enam ekor, dan berpendapatan rendah. Pada analisis regresi logistik dalam faktor jumlah tanggungan keluarga, cara mengobati sapi ketika sakit, dan keterlibatan peternak dalam program pelatihan Indodairy berpengaruh positif dan signifikan sedangkan faktor usia peternak dan jumlah hewan ternak sapi perah berpengaruh negatif dan signifikan terhadap adopsi teknologi celup puting., The contribution of the livestock subsector to the GDP of the agricultural the sector is relatively high every year and affects the growth of the national economy. The increase in milk consumption in meeting domestic needs has made farmers adopt technology to increase milk production and quality. This study aimed to analyze socio-institutional factors that influence on adoption teat dipping technology after milking to improve dairy cows quality and milk production. This study uses descriptive analysis and logistic regression methods obtained through interviews and questionnaires consisting of components of technology adoption, social economic characteristics, socio-institutional aspects of animal health services, market orientation, and stakeholder network obtained by farmers in the last three years. The results of the analysis show that the social-economic characteristics of the farmers are most farmers of productive age, elementary school education level, attending informal education, having family members greater than three people, having livestock smaller than six, and having a low income. In the logistic regression analysis, the number of dependents in the family, how to treat cows when they were sick, and the involvement of farmers in the Indodairy training program had a positive and significant effect. Meanwhile, the age of the farmers and the number of dairy cattle had a negative and significant effect on the adoption of teat dipping technology.
Keyword: Technology Adoption, Logistic Regression, Dairy Cow, Socio-Institutional

Judul: Hamiltonian formulation for linear waves motion in two layers fluid
Abstrak: The surface wave could be considered as a wave that separates two fluids, namely water and air. Based on this assumption, it is introduced the interfacial wave, a wave between two layers of fluid with different density. The formulation of interfacial waves motion begins with deriving the base equation of irrotational ideal fluid. Furthermore, according to irrotational fluid assumption, the base equation can be stated in velocity potential. In this derivation, the fluids domain is assumed to be restricted by rigid lid boundary conditions, both at the upper and lower limit. Therefore, the interfacial waves motion can be explained in a hamiltonian formulation. In the hamiltonian formulation, total energy is defined as the sum of kinetic and potential energy. The hamiltonian system is obtained from reduction of kinetic energy by using the Dirichlet Neumann Operator. The resulted kinetic energy equation is nonlinear. Therefore, this form is linearized by first part of the Taylor expansion. This linearization gives a dispersion relation of linear wave. Based on this dispersion relation, the phase speed of the linear wave depends on the density ratio of the two layers fluid.
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