Judul: Pengembangan Varietas Baru Anggrek Dendrobium Bunga Potong dengan Pendekatan Quality Function Deployment (QFD)
Abstrak: Development of Dendrobium cut flowers is one of the efforts taken to obtain a better quality of new variety. Breeding program will provide benefits if referring to ideotype plant breeding. The objectives of this research are: 1) to identify a new variety of Dendrobium ideotype as consumer requirement; 2) to identify consumer requirement variables as the priorities to be met by producer in the development of a new variety of Dendrobium cut flower; 3). to determine technical requirement priorities that are according to priorities consumer requirement in the development of a new variety of Dendrobium cut flower. This study use primary data in the form of an interview questionnaire. The sampling method is done by census to 30 Dendrobium cut flowers farmers at Gunung Sindur and Serpong. The data are analyzed by QFD approach by setting House of Quality matrix. The result of the study indicated there are 4 main priorities to be met by breeders in the development of a new variety of Dendrobium cut flowers: (1) Affordabel seeds price; (2) The ability to producing the flower; (3) The ability to gain the seed; (4) colour, shape, and size of the flower. Technical requirement priorities of breeder that according to satisfy consumer requirement priorities in the development of a new variety of Dendrobium cut flowers, are: (1) Reliable information system; (2) Scoring for flower quality characters (3).Tissue culture technology and relation between stakeholders and institute. These suggest that further research is recommended to gain supportive technologies for development new varieties of Dendrobium cut flowers.
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Judul: Development of Grading Algorithm for Cut Orchid Derultobium sp Using Image Processing.
Abstrak: The domestic and export market of orchid as one of the famous cut flowers in Indonesia required a prime and consistent quality. However, the manual-grading system based on the human vision resulting in an inconsistency of quality. The objective of this study was to develop a grading algorithm of Dendrobium orchid by the image processing. The image processing algorithm was developed for a grading system based on the cane length, the number of flower bloom, and the total flower (bud and bloom).
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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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