Judul: Strategy to Improve the Performance of the Export-Oriented Mango Agro-Industry Supply Chain During the Pandemic (Case Study: PT X Cirebon)
Abstrak: Kinerja rantai pasok mangga saat ini masih memiliki hambatan untuk orientasi ekspor. Tujuan penelitian ini adalah mengetahui mekanisme rantai pasok agroindustri mangga orientasi ekspor, mengukur kinerja rantai pasok mangga, dan perumusan alternatif strategi untuk meningkatkan kinerja ekspor. Mekanisme rantai pasok agroindustri mangga diidentifikasi dengan metode kualitatif. Penelitian ini dilakukan dengan metode Supply Chain Operations Reference (SCOR) untuk mengetahui kinerja rantai pasok mangga orientasi ekspor dan metode Analytical Network Process (ANP) untuk pemilihan alternatif strategi peningkatan kinerja rantai pasok. Hasil pengukuran kinerja rantai pasok menunjukkan matriks reliabilitas telah mencapai 100%, matriks fleksibilitas dan responsivitas selama 3 hari, tidak terdapat penyimpanan mangga, dan biaya rantai pasok 22,31%. Hal tersebut menunjukkan bahwa kinerja rantai pasok agroindustri mangga orientasi ekspor cukup baik, hanya biaya rantai pasok yang belum efisien. Biaya tinggi disebabkan hambatan ekspor berupa kualitas mangga memiliki umur simpan yang pendek sehingga distribusi menggunakan airline yang memiliki biaya tinggi dibandingkan dengan kapal. Strategi peningkatan kinerja terpilih yaitu peningkatan kualitas yang dapat dilakukan dengan pembimbingan budidaya hingga panen oleh pemerintah dan perusahaan, serta peningkatan teknologi pasca panen mangga. Biaya tinggi dapat diatasi dengan peningkatan teknologi pasca panen sehingga mangga memiliki umur simpan yang lebih lama, serta biaya distribusi ekspor lebih rendah., The current performance of the mango supply chain had barriers to export orientation. The purpose of this study was to determine the supply chain mechanism for export-oriented mango agroindustry, measure the performance of the mango supply chain, and formulate alternative strategies to improve export performance. Mango agroindustry supply chain mechanism identified by the qualitative method. This research was conducted using the Supply Chain Operations Reference (SCOR) method to determine the supply chain performance of export-oriented mangoes and the Analytical Network Process (ANP) method to select alternative supply chain performance improvement strategies. The results of the supply chain performance measurement show that the reliability matrix has reached 100%, the flexibility and responsiveness matrix for 3 days, there was not mango storage, and the supply chain cost was 22.31%. This shows that the supply chain performance of the export-oriented mango agroindustry was quite good, only the supply chain costs were not yet efficient. The high cost was due to export barriers in the form of mango quality having a short shelf life so that distribution used airlines which have high costs compared to ships. The selected performance improvement strategy was quality improvement by improving mango post - harvest technology.
Keyword: analytical network process, export performance, supply chain, mango, supply chain operations reference

Judul: The Marketing Strategies for Indonesian Mango in International Market.
Abstrak: Mango is one of the Indonesian leading tropical fruit with high production volumes, ranks seventh largest in the world that is 2,131,139 tons in 2011. Nevertheless, the export volume is very low at only 1,485 tons in 2011 with the main markets for Indonesian mango are the Middle East and Singapore. Indonesia has a chance to enhance the export volume considering the potential of mango production and world market nowadays. Therefore this study was aimed 1) to describe the characteristics of mango production and marketing in Indonesia, 2) to study the internal and external factors affecting Indonesian mango exports, and 3) to formulate strategies for enhancing the mango marketing in the international market. The data used was primary and secondary data. Gedong gincu and Arumanis were chosen among other varieties because both are the exported varieties. Data were collected on May-August 2012 by observation and inerview using questioner to nine for SWOT matrix and five for AHP respondents. Respondents consisted of farmers in Cirebon and Indramayu; exporters in Cirebon and Probolinggo; fruit exporter association, government, and researchers. Analysis tools used were: 1) Internal Factor Evaluation Matrix, External Factor Evaluation Matrix, and Internal-External Matrix, 2) Strength Weakness Opportunity Threat Analysis, and 3) Analytical Hierarchy Process (AHP). Mango cultivation is generally carried out by small-scale and farmyard farmers conventionally with simple maintenance management, resulting on a diverse quality. Marketing chain for the export market is quite short, farmers directly to exporters and farmers to exporters through collectors. There were few cooperation (contract farming) between farmers and exporters in the mango supply and the support for production. The results showed that total score of IFE matrix was 2.103 and total score of EFE matrix was 2.893. The combination of both results placed the competitive position of Indonesian mangoes in the second cell, that was grow and build cell. Recommendations to improve the marketing of Indonesian mango in international market were to implement standardization of mango orchard, increased cooperation between exporters and farmers, and developed "one stop service" center per region to produce and assure the availability of high quality fruit that could meet international market demand.
Keyword: AHP, international market, mango, marketing strategy, SWOT

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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