Judul: Analisis pemasaran sayuran organik di PT Agro Lestari Ciawi Bogor, Jawa Barat
Abstrak: Sayuran adalah salah satu kelompok hortikultura yang mempunyai arti dan kedudukan tersendiri dalam proses pembangunan nasional di sub sektor pertanian. Sayuran merupakan sumber vitamin dan mineral yang penting bagi pemenuhan gizi masyarakat. Sayuran organik mempunyai peluang untuk mengisi pasar di dalam negeri, karena kesadaran masyarakat Indonesia akan kesehatan mengkonsumsi sayuran bebas bahan kimia. Tujuan penelitian ini adalah : (1)Mengidentifikasi sistem pemasaran dan saluran pemasaran sayuran organik PT Agro Lestari, (2) menganalisis perbedaan harga jual di tingkat petani dan di tingkat pemasok dan (3) menganalisis farmer’s share dan rasio keuntungan biaya untuk sayuran organik pada PT Agro Lestari. Hasil penelitian ini diharapkan menjadi bahan informasi untuk pihak-pihak pengambil kebijakan dalam upaya perbaikan kinerja pemasaran sayuran organik pada PT Agro Lestari.
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Judul: Manajemen rantai pasokan brokoli organik (Studi Kasus PT Agro Lestari di Cibogo, Kabupaten Bogor, Jawa Barat)
Abstrak: komoditas unggulannya adalah brokoli dengan pangsa pasar Indonesia 15-20 persen/tahun. Namun demikian jaminan kualitas, jumlah pasokan kurang dan pengiriman yang belum tepat waktu merupakan penyebab belum efisiennya kinerja rantai pasokan brokoli. Oleh karena itu penelitian ini bertujuan untuk (1) mengidentifikasi dan mengkaji pengelolaan rantai pasokan brokoli organik pada PT Agro Lestari, (2) menganalisis kinerja rantai pasokan brokoli organik dalam hal efisiensi dan pelaksanaan kemitraan, dan (3) menganalisis alternatif kebijakan pengembangan manajemen rantai pasokan berdasarkan hasil evaluasi rantai pasokan. Penelitian akan dilakukan di PT Agro Lestari, Jl. Raya Puncak Jl. Diklat PLN No. 1 Cibogo Kabupaten Bogor dan kebun petani mitra yang berada di daerah Cisarua, Kabupaten Bogor. Penelitian mengenai manajemen rantai pasokan brokoli organik tersebut dilaksanakan pada bulan Mei hingga Juni 2011. Pengumpulan data dilakukan dengan observasi atau pengamatan langsung, kuesioner dan wawancara dengan pihak-pihak yang terkait. Responden dalam penelitian ini adalah petani brokoli organik yang berada di Desa Cisarua, PT Agro Lestari, pihak PT X , dan Lotte Mart. Penelitian dilakukan dengan metode analisis deskriptif kerangka Food Supply Chain Networking (FSCN), analisis tataniaga, dan analisis deskriptif dengan menggunakan kesesuaian atribut.
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Judul: Pengembangan kekekaran Model Additive Main Effect – Multiplicative Interaction (AMMI)
Abstrak: AMMI model for interactions in two-way table provide the major mean for studying stability and adaptability through GEI, which modeled by full interaction model. Eligibility of AMMI model depends on the assumption of normally independent distributed error with a constant variance. Nowadays, AMMI models have been developed for any condition of MET data i.e the violence of normality and homegeneity assumptions. We can mention in this class of modelling as MAMMI for Mixed AMMI model and GAMMI for Generalized AMMI model. GAMMI model handles non-normality i.e categorical response variables using an algorithm of alternating regression. While handling the non-homogeneity in mixed-models sense, one may use a model called factor analytic multiplicative for a MAMMI models. Outlier might be found in the data coincides with non-homogeneity variance. A method of handling outlier in additive and multiplicative modeling by applying Robust Alternating Regression (RAR) in FANOVA model. RAR FANOVA model was downweighting outlying scores and loadings in the k-dimensional spaces of scores and loadings, and robust estimator will be minimized under the constraints that are consistent with robust approach of the median of parameters. Application of GAMMI was found in several distribution of exponential family. The most interesting here is Poisson distribution which it has a unique property of equal mean and variance. Many zero observations make some dificulties and fatal consequence in Poisson modeling. We consider to facilitates an analysis of two-way tables of count with many zero observations in AMMI model. We develop GAMMI model for Poisson with zeroes problem, by a statistical framework of RCAM. Some link function apply to the mean of a cell equalling a row effect plus a column effect plus interaction terms are modelled as a reduced-rank regression with rank of 2, then it will be visualized by Biplot through SVD reparameterization. The ZIP-GAMMI model handle the excess-zero and also the overdispersion at once. The interaction structures are extracted from the non-zero cell. ZIP model provide us the probability become zero and the fitted value of the Poisson. The modelling scheme involves two important things: (1) the distribution (and link-function) and (2) the rank of model. Both are confounded, especially if there is overdispersion or excess-zero. Best-model fit can be provided by proper link function with respect to data’s distribution, at the same time it’s also possible by the rank of the model in decomposing the interaction terms. In this case the likelihood ratio test provides us the hypothesis testing.
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