Judul: Manajemen pemetikan tanaman teh (Camellia sinensis (L.) O. Kuntze) di PT Rumpun Sari Kemuning, Karanganyar, Jawa Tengah
Abstrak: This program was apprentice activity have intent to increase the knowledge and experience about pick aspect management and directly involve in the field and can solve the problem happens in the field. The internship program was conducted in PT Rumpun Sari Kemuning Karanganyar, Solo, Central Java almost for four months since February until July 2014. The implementation of apprentice is direct work activity and attend technical activities in the field. Observation is covering the that pluck section surface, diameter pluck section surface, the capacity of plucker thicknes of leaf, conservancy of tip leaf, productivity by age after cutting, pick analysis, bud analysis, services of picker. The result of observations were obtained there are some aspects in picking PT Rumpun Sari Kemuning during internship activities indicate that the execution time and shift plucking stringed jendangan not meet the standards set, still need improvement to meet the standards company, but the production can meet the needs of the target because at the top of the analysis result of the passage remains in compliance with the passage of medium quality standard.
Keyword: Bogor Agricultural University (IPB), tea., analysis tip, plucking pick

Judul: Pengelolaan Pemetikan Tanaman Teh (Camellia sinensis (L.) O. Kuntze) di Unit Perkebunan Rumpun Sari Kemuning, PT Sumber Abadi Tirta Sentosa, Karanganyar, Jawa Tengah
Abstrak: Kegiatan magang dilaksanakan untuk memperluas pengetahuan, pengalaman teknis dan manajerial tanaman teh serta mempelajari aspek pemetikan. Kegiatan magang dilaksanakan di Perkebunan Rumpun Sari Kemuning, Karanganyar, Jawa Tengah pada bulan Februari sampai Juni 2014. Metode yang dilaksanakan selama kegiatan magang terbagi atas dua yaitu metode langsung dan tidak langsung. Metode langsung dilakukan secara aktif mengikuti dan mengamati kegiatan teknis di lapangan dan wawancara. Metode tidak langsung dilakukan dengan mengumpulkan laporan manajemen, arsip kebun dan jurnal penelitian teh. Hasil magang menunjukkan bahwa tinggi bidang petik, diameter bidang petik, tebal daun pemeliharaan, kapasitas pemetik, gilir dan hanca petik, dan sarana transportasi telah sesuai standar PPTK Gambung. Analisis petik dan analisis pucuk masih perlu peningkatan agar kuantitas dan kualitas pucuk yang optimal. Pemangkasan mesin lebih efektif daripada pemangkasan manual dinilai dari bobot brangkasan dan manajemen waktu. Produksi dan HOK masih memerlukan jumlah tenaga kerja dalam memenuhi target produksi.
Keyword: bobot brangkasan, pemetikan, Perkebunan Rumpun Sari Kemuning, teh

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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