Judul: Analisis ekonomi dan kebijakan pengelolaan wisata alam berbasis masyarakat lokal di Kabupaten Administrasi Kepulauan Seribu Provinsi DKI Jakarta
Abstrak: Pariwisata telah menjadi bagian dari komoditi yang banyak digunakan oleh suatu wilayah sebagai salah satu sumber pendanaan pembangunan. Data sektor pariwisata di Indonesia menunjukkan pertumbuhan yang signifikan. Saat ini pemerintah Indonesia tengah mengupayakan kegiatan wisata yang diantaranya berlokasi di kawasan pelestarian alam dengan harapan dapat memberikan dampak ekonomi yang signifikan sekaligus melaksanakan upaya konservasi. Indonesia memiliki banyak kawasan wisata bahari, salah satunya adalah kawasan Kepulauan Seribu. Wilayah ini terdiri dari  110 pulau-pulau kecil, dengan berbagai pemanfaatan. Salah satu pemanfaatan yang berdampak positif bagi kegiatan perekonomian masyarakat lokal adalah kegiatan wisata bahari. Tujuan utama penelitian ini adalah melakukan analisis dampak ekonomi wisata alam. Penelitian ini difokuskan pada perspektif ekonomi wisata alam di negara berkembang.
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Judul: Penilaian Ekonomi dan Daya Dukung Wisata Bahari di Pulau Pari Kepulauan Seribu Provinsi DKI Jakarta
Abstrak: The economic assessment and carrying capacity of Pari island marine tourism in Thousand islands of DKI Jakarta province are intended to determine the land suitability of Pari island for the marine tourism, to estimate the physical carrying capacity of Pari island for the marine tourism, to estimate the economic values of Pari island for the marine tourism and the economic impacts for the local people. The analysis of tourism land suitability shows that the group of Pari island in accordance with the parameter of brightness and flow velocity is really appropriate with the parameter of the types of coral reefs and reef fish species, is appropriate with margin and is sufficiently appropriate with the live coral cover; and in accordance with the width parameter is of the potential for 361,5 ha diving and 939,55 ha snorkeling activities. The carrying capacity of the group of Pari island for diving tourism is 1.287 people/day, for snorkeling tourism is 2.787 people/day, for mangrove tourism is 504 people/day, and for beach tourim is 2.572 people/day. The results showed the total economic value of marine tourism in Pari island about 12.365.824.221,25 IDR or 192.314.529,10 IDR per hectare/year. Keynesian Local Income Multiplier value of cash flow marine tourism activities in Pari Island showed a value of 1,48, Income Multiplier Ratio Type I and Income Multiplier Ratio Type II with value of 1,09, and 1,14.The recommendations for the marine tourism development in Pari island are among other: the settlement of land ownership status; involvement, capacity development, and community empowerment; the opening of direct transport access toward Pari island; the improvement of infrastructures and tourism supporting facilities
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Judul: Effects of Particle Shapes on Temperature Distribution under Static Ohmic Heating.
Abstrak: The ohmic heating is defined as a process wherein an alternating electrical current is passed through materials resulting in the heat generation inside the product. The excellence of ohmic heating in comparison with other thermal processing is its energy efficiency and ohmic heating could keeping nutritional as well quality attribute of food via blanching, sterilization, pasteurization, extraction, fermentation, and evaporation. Nevertheless, in ohmic heating process, the electrical conductivity of product is a key parameter. The worst case in the ohmic heating of multiphase product could be occurred when the solid phase has very lower or very high electrical conductivity than the liquid. This study aims to reveal the temperature distribution and the heating rate properties of solid and liquid phase as affected by particle shape and its orientation to the electric field. Experiments were conducted with salt solution 1% and carrot that blanched in salt solution 6%. Blanching process was conducted in order to increase the electrical conductivity of carrot close to the salt solution 1%. Ohmic heating was applied to the sample using static cell (4.90 cm diameter and 6.00 cm in length of sample area) at constant voltage gradient (40 V). Each experiment was conducted in triplicate. It was observed that the different particle shape and orientation provide the different heating rate properties. The slice particle had the fastest heating rate. Moreover the perpendicular orientation was heated faster than parallel orientation. The parallel cylindrical shape provides the slowest heating rate. This shape possibly induced the worst-case condition and could be used as sufficiency heat parameter. The heating pattern of each solid and liquid were simulated using COMSOL modeling software. The predicted temperature values were in good agreement with the experimental data with the maximum prediction error of 3 °C.
Keyword: particle orientation, particle shape, electrical conductivity, ohmic heating