Judul: The Guidance for Coastal Region Development of Rembang Regency Based on Salt Commodities
Abstrak: Garam adalah komoditas strategis yang memiliki kegunaan penting bagi manusia, terutama untuk memenuhi kebutuhan rumah tangga dan industri. Kebutuhan garam Indonesia saat ini belum dapat dipenuhi oleh produksi dalam negeri, bahkan separuh dari kebutuhan garam tersebut dipenuhi dari impor garam. Kabupaten Rembang sebagai salah satu sentra produksi garam nasional memiliki potensi untuk ditingkatkan produksi garamnya. Lokasi penelitian ini difokuskan di wilayah pesisir Kabupaten Rembang dengan tujuan sebagai berikut: 1) menganalisis kesesuaian lahan untuk tambak garam, 2) menganalisis kelayakan usaha tambak garam, 3) menganalisis keselarasan lahan potensial tambak garam terhadap RTRW Kabupaten Rembang, 4) menganalisis implikasi sosial dan ekonomi dari pemanfaatan lahan potensial tambak garam di pesisir Kabupaten Rembang untuk produksi garam, dan 5) menyusun arahan pengembangan wilayah pesisir Kabupaten Rembang berbasis komoditas garam. Penentuan lokasi yang sesuai untuk pengembangan tambak garam perlu mempertimbangkan hasil evaluasi kesesuaian lahan dan kelayakan usaha. Kelayakan usaha dievaluasi berdasarkan keuntungan atau kerugian yang akan didapatkan jika lahan tersebut dimanfaatkan untuk usaha produksi garam. Peta kesesuaian lahan hasil analisis selanjutnya di-overlay dengan peta penggunaan lahan dan peta RTRW Kabupaten Rembang 2011-2031 untuk mengetahui lokasi lahan pengembangan tambak garam yang selaras terhadap peruntukan kawasan. Berdasarkan hasil penelitian, lahan yang memiliki kategori kesesuaian lahan S1 luasnya adalah 10.325 hektar atau 28,45% dari luas seluruh lahan di pesisir Kabupaten Rembang, lahan S2 luasnya adalah 5.687 hektar atau 15,67%, lahan S3 luasnya adalah 2.471 hektar atau 6,81%, sedangkan lahan yang tidak sesuai untuk tambak garam (N) luasnya adalah 17.813 hektar atau 49,08%. Lahan yang tersedia untuk tambak garam luasnya adalah 3.560 hektar. Berdasarkan hasil analisis ekonomi diketahui bahwa lahan dengan kategori S1, S2, dan S3 dapat menghasilkan keuntungan jika dimanfaatkan untuk usaha produksi garam. Area lahan potensial untuk pengembangan tambak garam yang selaras terhadap RTRW luasnya adalah 2.484 hektar. Implikasi terhadap aspek sosial dan ekonomi atas pemanfaatan seluruh lahan potensial untuk tambak garam adalah terciptanya peluang kerja pergaraman sebanyak 5.894 orang dan diperolehnya potensial produksi garam sebesar Rp. 66,9 miliar per tahun yang sanggup memberikan kontribusi sebesar 0,26% terhadap total PDRB tahun 2025. Pengembangan wilayah pesisir Kabupaten Rembang diarahkan ke dalam 3 (tiga) kategori arahan, yaitu wilayah yang diarahkan untuk dipertahankan produktivitasnya seluas 1.366 hektar, wilayah yang diarahkan untuk ekstensifikasi lahan seluas 931 hektar, dan sisanya dengan luas sebesar 187 hektar diarahkan untuk intensifikasi lahan., Salt is a strategic commodity that has essential uses for humans to meet household and industrial needs. Domestic production cannot meet Indonesia's current salt needs, even half is completed from imported salt. Salt production in Rembang Regency as one of the national salt production centers can be increased. The location of this research is focused on the coastal region of Rembang Regency with the following objectives: 1) analyze the land suitability for salt ponds, 2) analyze the business feasibility of a salt pond, 3) analyze the alignment of potential land for salt ponds with the RTRW of Rembang Regency, 4) analyze the social and economic implications of utilizing the potential land of salt ponds on the Rembang Regency coast for salt production, and 5) arrange development direction of the coastal region of Rembang Regency of based on
Keyword: land suitability, carrying capacity, the monetary value of salt production

Judul: Kajian Pengembangan Sentra Tambak Garam Rakyat di Kawasan Pesisir Selatan Kabupaten Sampang Provinsi Jawa Timur
Abstrak: Salt is a vital commodity that has an important role either for consumption or for various industrial activities. Salt demand has been increasing annually and apparently domestic production has not fulfilled the demand. Sampang is one of regency in Jawa Timur Province which has comparative advantages because of its widest conventional salt pond in Madura island. Development of conventional salt pond center in the south coast region of Sampang Regency is an attempt to address the national shortage of salt and also to increase regional economic. This research aims: (1) to identify potential land for extension of the salt ponds, (2) to analyze land rent of various land use types and compare it with salt ponds, (3) to determine and to compare the financial benefits among harvesting methods in the salt production, and (4) to formulate the strategic direction for development of conventional salt pond center at the study sites. The results show that there were 2 398.55 hectares of potential land for extending salt ponds consisting of 2 142.45 ha of paddy fields, 152.38 ha of aquaculture ponds, 54.91 ha of field/moor, 42.36 ha of swamp, 5.72 ha of scrub and 0.74 ha of mixed gardens. Land rent of trade and service activity, residential, ”jambu air” orchard, teak garden, irrigated field, rainfed, banana plantation and mango orchard were higher than land rent of salt pond which was ranging from 1 675 to Rp2 954 IDR per m2 per year. While paddy field, bamboo gardens, and fish ponds were underneath salt pond. Salt ponds regarding its suitability, land rent and type of land use could be extended in these type of land use respectively, i.e: aquaculture ponds, rainfed cropland, swamp, shrub, paddy fields, banana plantation, mango orchards, and bamboo gardens. All of harvesting methods in salt production are financially feasible to continue (NPV > 0; IRR > discount rate). Payback period and Net BCR show that the geomembrane method was more profitable than the “maduris” and the “portugis” method. Combination of strategic alternatives selected by A’WOT as the primary strategy to develop conventional salt pond center in the south coast region of Sampang Regency are: (1) strengthening the institutions of salt farmers to assist regulations enforcement, (2) increasing volume of production and increasing salt quality, and (3) expanding and streamlining the distribution network by government intervention.
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Judul: Comparison of HIV Model with and without Time Delay
Abstrak: Acquired immunodeficiency syndrome (AIDS) is the reduction of the human immune system. AIDS is caused by human immunodeficiency virus (HIV). No medicine has been found for this desease until recently. An AIDS therapy is usually performed with highly active antiretroviral therapy, namely reverse transcriptase inhibitors, protease inhibitors and combination of both. Various models have been developed to explain the immune system of patients with AIDS, namely the HIV, response and the time delay model. This paper discusses the comparison between the dynamics of the HIV virus, the dynamic response of protease inhibitors and dynamics of time delay. The dynamics model of HIV is influenced by the level of white blood cells produced and the rate of its death. Dynamics of protease inhibitors on the response and the time delay model is influenced by the death rate of infected white blood cells and the failure rate of treatment.
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