Judul: Keberlanjutan Hortikultura menuju Era Pertanian 4.0 di Kecamatan Lembang, Kabupaten Bandung Barat
Abstrak: Lembang Sub-district is one of areas in West Java Province that develop horticultural cultivation. However, the sustainability of horticulture in Lembang Sub-district seems to be threatened by the expansion of Bandung Metropolitan Area (BMA). Agricultural land conversion due to the expanding urban area has endangered the future of horticultural agribusiness. Hence, this research aims to identify (1) the types and distribution of horticulture, (2) the land capability and land conformity, (3) the sustainability status of horticulture, and (4) the recommendation for sustainable horticultural development in Lembang Sub-district. Questionnaire and in-depth interviews were performed to collect information of current farming systems from on-farm to off-farm as well as the use of internet to support the agribusiness. Additionally, Maxar high-resolution as the satellite imagery in Google Earth 2019, Shuttle Radar Topography Mission (SRTM) imagery, map of soil physics and spatial plan, statistics of demography were gathered. Several methods were employed, including visual interpretation of Maxar satellite imagery, overlay, and table matching using ArcGIS, and Rapid Appraisal Rice Farming (RAP-FARM) using Multidimensional Scaling (MDS) analysis. The assessment was carried out on various dimensions which are the pillars of sustainable development, namely: ecological, social, economic, institutional, and technological dimensions. It seems that vegetables were predominately grown in Lembang covering 3,033.22 ha. Four land capability classes were found in Lembang Sub-district, namely: class III, class IV, class VI, and class VII with the respective total areas: 1,834.95 ha, 1,636.72 ha, 3,627.94 ha, and 498.39 ha. This study explained four categories of land conformity, namely: conformed (266.92 ha), conditionally conformed (2,624.85 ha), potentially conformed (549.93 ha), and unconformed (182.99 ha). In multidimensional, sustainability indexes of horticulture in class III and IV (KKL3 and KKL4) were 56.42 and 54.47. Both are classified as quite sustainable. While the sustainability index for horticulture in land capability class VI (KKL6) was 43.56 and classified as less sustainable. In the era of agriculture 4.0, horticulture should be integrated with the Internet of Things (IoT), so it can survive amid the rapid urban expansion. Digital marketing or online-based sales is typical for 4.0 era. Farmers should be trained to adapt with the era. Four recommendations being constructed based on spatial planning, land capability and its sustainability were advised to improve horticultural development. Recommendation-I, II, III, IV are ordered to meet the criteria. Recommendation-1 (156.96 ha) is very appropriate for development because it is conformed to the spatial planning, has a good land capability class, and sustainable status. Meanwhile, recommendation II, III, and IV have great potential to be developed but more attention to their limitations should be given., Kecamatan Lembang merupakan salah satu pusat hortikultura di Indonesia khususnya di Provinsi Jawa Barat. Keberlanjutan pertanian hortikultura di Kecamatan Lembang saat ini tampaknya menjadi perhatian khusus, karena pemekaran perkotaan di Bandung Metropolitan Area (BMA). Oleh karena itu, penelitian ini bertujuan untuk mengetahui (1) jenis dan sebaran hortikultura, (2) kemampuan lahan dan kesesuaian lahan, (3) status keberlanjutan hortikultura, dan (4) area rekomendasi untuk pengembangan hortikultura berkelanjutan di Kecamatan Lembang. Kuesioner dan wawancara mendalam dilakukan untuk mengumpulkan informasi tentang sistem pertanian saat ini dari on-farm hingga off-farm serta
Keyword: Internet of Things, land capability, land conversion, technology, MDS

Judul: Analisis efisiensi produksi dan pendapatan usahatani brokoli di Desa Cibodas, Kecamatan Lembang, Kabupaten Bandung Barat
Abstrak: Meningkatnya permintaan produk hortikultura pada dasarnya merupakan faktor penarik bagi pertumbuhan agribisnis hortikultura. Dalam jangka panjang, diperkirakan permintaan komoditas hortikultura akan terus meningkat, dengan laju lebih cepat dibanding komoditas pangan lainnya. Disamping akibat meningkatnya jumlah penduduk, hal tersebut dapat dirangsang oleh beberapa faktor antara lain dengan pertimbangan kesehatan konsumsi pangan cenderung bergeser pada bahan pangan non-kolesterol terutama pada kelompok rumah tangga berpendapatan tinggi atau di negara-negara maju. Permintaan produk hortikultura umumnya lebih elastis terhadap pendapatan dibanding permintaan produk pengan lainnya, sehingga kenaikan pendapatan rumah tangga akan diikuti dengan kenaikan permintaan produk hortikultura pada laju yang lebih besar daripada produk pangan lain. Konsumsi per kapita produk hortikultura dari laju kenaikan pendapatan rumah tangga umumnya lebih tinggi di daerah kota daripada daerah perdesaan, konsekuensinya adalah berkembangnya daerah perkotaan akan mendorong peningkatan permintaan produk hortikultura. Kabupaten Bandung Barat merupakan salah satu lokasi sentra pengembangan agribisnis sayuran di Jawa Barat. Kabupaten Bandung Barat merupakan kabupaten baru hasil pemekaran dari Kabupaten Bandung. Pemekaran wilayah yang merupakan bagian dari otonomi ini dilaksanakan pada tahun 2007, dengan pertimbangan untuk mendekatkan pelayanan kepada masyarakat sehingga diharapkan akan lebih mendorong penyediaan barang publik dan pelayanan publik serta memberikan kemampuan dalam pemanfaatan potensi daerah. Ada beberapa kecamatan yang menjadi pusat produksi sayuran di Kabupaten Bandung Barat, antara lain Kecamatan Lembang, Kecamatan Cisarua, dan Kecamatan Parongpong. Kecamatan Lembang merupakan lokasi yang luas lahan dan produksinya paling tinggi dibandingkan Kecamatan lain di Kabupaten Bandung Barat.
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Judul: Approximation of the Median of Poisson Distribution Using the Relation of Poisson-Gamma Distribution
Abstrak: A major drawback of median is that median cannot usually be defined in closed form, even in the cases where their distribution functions are known. This study gives an approximation of the closed form for the median of the Poisson distribution by using the relation of Poisson-Gamma distribution. The approximation uses elementary techniques based on the monotonicity of certain sequences involving tail probabilities of the Poisson distribution and the Central Limit Theorem. Furthermore, a closed form expression for the mean absolute deviation 􀜧|􀜰􀰒 􀵆 􀜯􀝁􀝀􁈺􀜰􀰒􁈻| is also studied. The median is relevant because of the fact that it minimizes the mean absolute deviation of a Poisson random variable (􀜰􀰒􁈻 by considering median as central tendency.
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