Judul: Rekayasa Model Pengendalian Persediaan Bahan Baku Industri Pengalengan Ikan
Abstrak: Pengendalian persediaan bahan baku secara optimal pada industri pengalengan ikan diperlukan untuk menjamin kelancaran produksi dan mendapatkan biaya persediaan yang minimum. Karena persediaan berkaitan dengan alokasi biaya yang digunakan, maka perlu disusun kebijakan tentang persediaan bahan baku yang sesuai dengan permasalahan yang dihadapi. Program InveCnnt dirancang untuk mendapatkan model optimal dari pengendalian persediaan bahan baku dengan memperhatikan faktor-faktor yang terlibat, antara lain permintaan ikan, harga ikan, waktu tunggu, dan komponen biaya persediaan. Model persediaan yang sesuai dengan kondisi permintaan bahan baku industri pengalengan ikan adalah model probabilistik atau stokastik dengan kebijakan pemantauan kontinu, dirnana permintaan ikan bersifat tidak tetap dan mengikuti sebaran peluang tertentu. Model ini menentukan jurnlah pernesanan dan titik pernesanan kembali bahan baku serta tingkat persediaan rata-rata. Kasus yang dapat digunakan sebagai alternatif pengambilan keputusan adalah pemesanan tertunda (Back orders) dan kehilangan penjualan (Lost sales). Program aplikasi dibuat dengan fasilitas Microsoft Visual Basic yang dapat digunakan pada Windows'95. Tiga komponen utama program adalah Sistern Manajemen Dialog, sebagai sarana komunikasi antara pengguna dan model; Sistern Manajemen Basis Data, sebagai fasilitas pengelolaan data, terdiri dari pemasukan data, penyimpanan data, perbaikan data, dan penampilan data; Sistem Manajemen Basis Model terdiri dari submodel-submodel yaitu Permintaan, Harga, Waktu Tunggu, Probabilistik dan Perencanaan Biaya.
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Judul: Sistem Penunjang Keputusan untuk Perencanaan Produksi pada Industri Perikanan
Abstrak: Pada industri pengolahan ikan, persediaan bahan baKu yang mengalami Kekurangan akan menimbulkan kehllangan Kesempatan pasar, sedangkan apabila kelebihan rnenimbulkan masalah kerusakan mutu, timbulnya biaya penyimpanan yang tinggi dan kerugian investasi mibat adanya modal yang terhenti. Kajian mengenai perihal manajemen persediaan dengan teknik pendekatan sistem diharapkan dapat mengendallkan sltuasi tersebut.
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Judul: Systematics of Desmos (Annonaceae) in Malesia
Abstrak: Desmos is a woody climbing genus of Annonaceae which has been widely used as traditional medicine in several countries such as China, Indo-China, Thailand, and Peninsular Malaysia to treat dysentery, vertigo, fever, and postpartum. Phylogenetic studies on Desmos showed a close relationship between Desmos and Dasymaschalon. They share similar moniliform monocarpic fruits, but their flowers are different. It has been debated among Annonaceae researchers whether both genera should be treated as the same or distinct genus. Therefore, investigation on the taxonomic delimitation of Desmos species and Dasymaschalon will be necessary. Plastid genome (plastome) identification, leaf epidermal section of Desmos species and Dasymaschalon species, a taxonomic revision of Desmos in Malesia using morphological data, the spatial distribution of Desmos species in Malesia, and morphological and genetic variation in Desmos chinensis population using ISSR marker were used to investigate taxonomic delimitation of Desmos. Plastome study of Desmos chinensis and Dasymaschalon dasymaschalum was carried out to determine the origin, evolution, phylogenomics, and identify marker candidates for Desmos and Dasymaschalon or with other genera in Annonaceae. We discovered that the plastome of Desmos chinensis was circular with the size of 167,677 bp (smaller than Dasymaschalon dasymaschalum), consist of 111 genes, including 78 protein-coding genes, 29 transfer RNAs, and 4 ribosomal RNAs. The plastome showed a typical quadripartite structure, i.e., large single copy (LSC), small single copy (SSC), and two inverted repeats (IRs). The plastome of Dasymaschalon dasymaschalum was 191,488 bp in length, which also exhibited a typical quadripartite structure (LSC, SSC, and two IRs). Desmos chinensis and Dasymaschalon dasymaschalum showed different copies of accD, ndhD, ndhF, rps18, and ycf2. Protein coding genes of rpoB, rpoC1, rbcL, matK, rpl32, infA, and rpl36 were identified based on nucleotide diversity, sequence variability, and parsimony-informative sites. The genes are defined as molecular marker candidates of plastome for phylogenetic, barcoding, and population genetic research. We predicted that Desmos chinensis and Dasymaschalon dasymaschalum separated at ca. 64 million years ago during the Paleocene. Leaf anatomical feature study was carried to support the taxonomic delimitation of interspecific Desmos and intergeneric of Desmos and Dasymaschalon. Leaf anatomy in the paradermal section of 20 taxa (12 species of Desmos, eight species of Dasymaschalon) have been carried out. According to the leaf epidermal section, Desmos and Dasymaschalon are two distinct genera mainly distinguished based on the anticlinal wall undulation of epidermal cells and supported by variation of the crystal type and size. The anticlinal wall undulation of Desmos was almost straight to slightly wavy and never sinuous; meanwhile, Dasymaschalon varies from almost straight to deeply sinusoid. The crystals of Desmos consist of rhombohedral, druse type A, and druse type B crystals, whereas Dasymaschalon has prism, druse type A, druse type B, and druse type C crystals. The recent taxonomic revision using the morphological data was mainly based on the examination of about 1374 specimens from BO, L, WAN, ANDA, SING, SAN, K, P, HUH herbaria. The Desmos species in Malesia consists of eight species: D. acutus, D. chinensis, D. chryseus, D. dunalii, D. pedunculosus, D. subbiglandulosus, two new records: D. lawii and D. macrocarpus, and one
Keyword: Dasymaschalon, Desmoid clade, Magnoliid, plastid genome, phylogenomics analysis