Judul: The Effect of Individual factor on the adoption of record keeping in Koperasi Peternak Sapi Cianjur Utara
Abstrak: Pemerintah berupaya meningkatkan ketahanan pangan masyarakat. Melalui pemenuhan kebutuhan pangan masyarakat dapat meningkatkan kesejahteraan masyarakat. Pemenuhan kebutuhan pangan dan gizi yang baik dapat dicapai dengan peningkatan konsumsi susu. Namun, produksi dalam negeri masih belum bisa mencukupi kebutuhan susu dalam negeri. Peningkatan produksi susu dalam negeri dapat dicapai dengan penggunaan teknologi. Penggunaan teknologi pencatatan data peternakan dapat membantu peternak meningkatkan produksi susu sapi. Penelitian ini bertujuan untuk menganalisis pengaruh karakteristik sosial ekonomi terhadap penerapan pencatatan data peternakan dan menganalisis faktor yang mempengaruhi adopsi teknologi pencatatan data peternakan di KPS Cianjur Utara. Metode yang digunakan berupa analisis deskriptif dan regresi logistik dengan menggunakan data dari kuesioner dengan 71 responden. Kondisi karakteristik sosial ekonomi di KPS Cianjur Utara menunjukan responden yang mengadopsi teknologi adalah responden pada usia produktif, memiliki pendidikan rendah, memiliki jumlah tanggungan sedikit, dan skala usaha menengah. Hasil dari penelitian ini menunjukan bahwa variabel umur, pendidikan informal, dan tanggungan keluarga berpengaruh negatif signifikan terhadap penerapan pencatatan data peternakan. Selain itu, jumlah sapi, luas kandang sapi, dan bahan konstruksi atap memiliki pengaruh positif signifikan terhadap penerapan pencatatan data peternakan., The government is trying to improve the food security of the community. By fulfilling the community's food needs, it can improve the community's welfare. Meeting good food and people can achieve nutrition needs by increasing milk consumption. However, domestic production is still unable to meet the domestic demand for milk. Increasing domestic milk production can be achieved by using technology. The use of livestock data recording technology can help farmers increase cow's milk production. This study aims to analyze the effect of socio-economic characteristics on the application of livestock data recording and the factors that influence the adoption of livestock data recording technology in North Cianjur KPS. The method used is descriptive analysis and logistic regression using data from a questionnaire with 71 respondents. The socio-economic characteristics in North Cianjur KPS show that respondents who adopt technology are of productive age, have low education, have few dependents, and are of medium-scale business. The results of this study indicate that the variables of age, informal education, and family dependents significantly negatively affect the application of livestock data recording. In addition, the number of cows, the area of the cowshed, and roof construction materials significantly positively affect the application of livestock data recording.
Keyword: Technology Adoption, Logistics Regression, Livestock Data Recording, Adopsi Teknologi, Regresi Logistik, Pencatatan data peternakan

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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