Judul: Evaluation of Beef Cattle Artificial Insemination (AI)  Program in Garut Regency
Abstrak: Peningkatan jumlah penduduk akan diikuti dengan meningkatnya jumlah konsumsi pangan, salah satunya permintaan terhadap daging sapi. Namun, penyediaan daging dan konsumsi protein dari ternak masih sangat rendah. Sehingga peternak perlu meningkatkan produksi daging untuk pemenuhan protein hewani bagi masyarakat. Kegiatan inseminasi buatan pada ternak di Indonesia terus dilakukan dalam rangka meningkatkan kualitas, populasi dan produksi ternak. Penelitian ini bertujuan mengevaluasi tingkat keberhasilan inseminasi buatan pada sapi potong sebagai evaluasi pelaksanaan program inseminasi buatan di Kabupaten Garut berdasarkan data service per conception (S/C), conception rate (CR), dan calving rate (CvR). Data yang digunakan merupakan data sekunder yang diperoleh dari Dinas Perikanan dan Peternakan Kabupaten Garut dalam kurun waktu 2019- 2020. Hasil penelitian menunjukkan bahwa nilai S/C, CR dan CvR berturut-turut 1,52 1,69, dan 78% 79%, serta 46% 64%. Dari hasil tersebut dapat disimpulkan bahwa pelaksanaan program Inseminasi Buatan (IB) di Kabupaten Garut dilihat dari nilai S/C dan CR melebihi pencapaian skala nasional, namun nilai angka kelahiran (CvR) memiliki persentase yang rendah dikarenakan faktor penjualan betina bunting yang masih tinggi dan permasalahan dalam pendataan kelahiran., The increase in population will be followed by an increase in the amount of food consumption such as beef. However, the supply of meat and protein consumption from livestock isstill very low.Therefor farmers need to increase meat production to fulfill the demand of animal protein. Artificial insemination activities in livestock in Indonesia conducted in order to improve the quality, population and production of livestock. This study aimed to evaluate artificial insemination program in Garut Regency based on data on service per conception (S/C), Conception rate (CR), and calving rate (CvR). The secondary data from the Garut Regency Fisheries and Livestock Service in the 2019-2020 period was used in this study. The results showed that the values of S/C, CR and CvR were 1.52 1.69 and 78% 79% and 46% 64%, respectively. It can be concluded that the implementation of the Artificial Insemination (IB) program was achieved of national target, based on the value of S/C and CR. However,the number of calving rate (CvR) still in low percentage due to the high sales factor of pregnant females and problems in birth registration.
Keyword: CR, CvR, evaluasi, S/C, sapi potong, beef cattle, evaluation, IB

Judul: The Reproductive Profile of Beef Cattle Acceptor in the Artificial Insemination Program (AI) in Bekasi Regency
Abstrak: Seiring bertambahnya jumlah penduduk maka semakin meningkat pula tingkat konsumsi masyarakat akan protein hewani. Permintaan daging sapi oleh konsumen tidak diimbangi dengan jumlah populasi sapi potong di Indonesia. Kegiatan inseminasi buatan (IB) di Indonesia terus dilakukan guna meningkatkan populasi, mutu, dan produksi ternak sapi. Penelitian ini bertujuan untuk mengetahui tingkat keberhasilan IB pada sapi potong sebagai evaluasi pelaksanaan program IB di Kabupaten Bekasi dilihat dari service per conception (S/C) dan conception rate (CR). Data yang digunakan merupakan data sekunder yang diperoleh dari Dinas Pertanian Kabupaten Bekasi pada tahun 2018 dan 2019 laporan program IB, laporan pemeriksaan kebuntingan, serta perhitungan S/C dan CR. Data yang diperoleh dianalisis secara deskriptif komparatif berdasarkan hasil olahan program Microsoft Excel 2013. Hasil penelitian menunjukkan bahwa rata-rata S/C pada tahun 2018 sebesar 1,3 dan tahun 2019 sebesar 1,1, kemudian untuk CR pada tahun 2018 yaitu sebesar 76,96% dan tahun 2019 sebesar 91,11%. Disimpulkan bahwa pelaksanaan IB di Kabupaten Bekasi dapat diklasifikasi berhasil karena melampaui target skala nasional., As the civil population increases, so does the level of public consumption of animal protein. The consumers’ demand on beef was not equal with the number of beef cattle population in Indonesia. The Artificial Insemination (AI) activities in Indonesia were continuously carried out in order to increase the population, the quality, and the production of beef cattle. The aims of this research are to determine the success rate of AI in beef cattle as the evaluation of the implementation on the AI program in Bekasi Regency as seen from the Service per Conception (S/C) and Conception Rate (CR). The data used was secondary data obtained from the Agriculture Office of Bekasi District in 2018 and 2019, AI program reports, pregnancy reports, and calculation of S/C and CR percentage. The data obtained were analyzed descriptive -comparatively based on the results of the Microsoft Excel 2013 program. The results showed that the average S/C in 2018-2019 was 1,3 and 1,1. For the CR in 2018-2019 was 76,96% and 91,11%. The AI Implementation in Bekasi district can be classified succeed because it can exceed the national scale target.
Keyword: AI, beef cattle, CR, S/C

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.
Keyword: