Judul: Analisis Manajemen Rantai Pasok Buah Manggis dengan Metode Analytic Network Process di PT Agung Mustika Selaras, Jawa Barat
Abstrak: Supply chain management (SCM) of mangosteen is generally different with supply chain management of manufacturing products because of the mangosteen rots very quickly, its availability is depend on the season, its various shape, size and voluminous also which is difficult to handle it. The high complexity of the supply chain network and the characteristics of the mangosteen make supply chain management of mangosteen are more vulnerable to the risk of losses that have not been able to provide profit improvements for stakeholder of the mangosteen supply chain. In order to solve various risk of mangosteen supply chain is needed supply chain risk management (SCRM) as one of efforts to build the robust supply chain management. The purpose of this research were ; (1) to identify activities of mangosteen SCM, (2) to identify source and kind of risks of mangosteen SCM, (3) to analyze the potential risks of mangosteen SCM losses, (4) to analyze alternative solutions and other risk factors to improve the ability of supply chain risk management (5) to design mangosteen SCRM for improving continuously. Methods used consist of descriptive qualitative method, to identify source of risk assessment and risk factors that affect on mangosteen supply chain management and using analytic network process method, to analyze the source and kind of risk factors that affect on increasing competency of SCRM. Data input were obtained from opinion of some experts in mangosteen supply chain through a questionnaire filling. There are three (3) experts that can be represented as experts in mangosteen supply chain management; they are Manager of KBU Al-Ihsan, Operational Manager of PT Agung Mustika Selaras and Head of Center for Tropical Fruit Studies, Bogor Agricultural University. The results of ANP assessment that the types of risk were the uncertainty of the price and demand in market risk as source risk and the type of risk of the uncertainty quality and weather as production risk. Results of the ANP to improve supply chain risk management obtained priority scale were operational key process (OKP), organizational performance factor (OPF), operational process cycle (OPC) and risk operational practices (ROP). In order to develop the robust SCM through the development of sustainable mangosteen SCRM, thus risk control was done by weakening and separating the risk to increase product management, supply management and information management which prioritized on procurement and production of the mangosteen.
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Judul: The development of supply chain of mangosteen in Bogor district, West Java
Abstrak: Manggis (Garcinia mangostana L.) merupakan buah yang diekspor dari Indonesia yang mendominasi ekspor buah Indonesia (37,4%). Sentra produksi buah manggis terbesar di Indonesia adalah Jawa Barat dengan Kabupaten Bogor merupakan salah satu kabupaten penghasil buah manggis yang terbanyak. Kegiatan produksi buah manggis di Jawa Barat tidak cukup efisien untuk bersaing secara internasional. Agar bisnis manggis mempunyai keunggulan bersaing, maka Koperasi Bina Usaha Al-Ihsan (KBU Al-Ihsan) mengembangkan manajemen rantai pasok buah manggis di Kabupaten Bogor pada tahun 2007 dengan mengintegrasikan proses bisnis dari penerimaan bahan baku hingga penjualan buah manggis segar. Tujuan penelitian ini adalah melakukan analisis kondisi rantai pasok buah manggis di Kabupaten Bogor, Jawa Barat pada saat ini serta menyusun pengembangan rantai pasok buah manggis tersebut dengan mempertimbangkan kinerja, risiko, dan nilai tambah. Penelitian ini hanya dibatasi pada rantai pasok buah manggis segar untuk pasar ekspor. Data primer diperoleh secara langsung dari hasil penggalian informasi dari para ahli dan responden penelitian secara terstruktur menggunakan alat bantu berupa kuesioner maupun secara tidak terstruktur melalui wawancara secara mendalam. Responden penelitian meliputi para pemangku kepentingan bisnis buah manggis. Data sekunder diperoleh dari studi pustaka serta penelusuran data dari Badan Pusat Statistik dan Dinas Pertanian Kabupaten Bogor, Jawa Barat. Deskripsi rantai pasok yang ada pada saat ini dan penentuan lingkup rantai pasok yang diteliti dilakukan pada langkah awal. Metode yang digunakan pada langkah awal ini adalah deskriptif kualitatif dengan melakukan eksplorasi pada rantai pasok buah manggis yang menjadi objek penelitian. Langkah selanjutnya adalah melakukan identifikasi peran masing-masing pelaku dalam rantai pasok dan analisis elemen kunci struktur rantai pasok yang berperan dalam membentuk rantai pasok buah manggis. Keterkaitan antara sub elemen dalam tiap elemen kunci struktur tersebut dikaji dengan menggunakan Intepretative Structural Modeling (ISM). Indikator kinerja kunci dan risiko kemudian diidentifikasi dengan menggunakan metode Fuzzy Analytical Hierarchy Process (Fuzzy AHP). Dalam pengembangan rantai pasok ini, kinerja rantai pasok diukur menggunakan model Supply Chain Operations Reference (SCOR) dan nilai tambah juga dianalisis menggunakan metode Hayami. Pengukuran kinerja dan analisis nilai tambah dilakukan pada rantai pasok yang dikelola oleh KBU Al-Ihsan dan saluran pemasaran buah manggis di luar rantai pasok tersebut..
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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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