Judul: Penentuan Faktor Kredibilitas Premi Asuransi Menggunakan Teori Kredibilitas
Abstrak: Karya ilmiah ini membahas penentuan faktor kredibilitas, atau yang diketahui sebagai pembobot, dalam menentukan premi asuransi dengan menggunakan Teori Kredibilitas. Dijelaskan sebanyak tiga model untuk menduga hasil pembobot tersebut, yaitu Model Poisson-Gamma, Model Normal dan Model Buhlmann. Dengan penentuan pembobot tersebut, perusahaan asuransi dapat lebih mudah menentukan premi pada pihak tertanggung berdasarkan pengelompokan tingkat risiko yang hampir sama. Tertanggung dengan risiko yang tinggi dikelompokkan menjadi satu kelompok dengan pembayaran premi yang besar, begitu pula pihak tertanggung dengan risiko rendah dikelompokkan menjadi satu kelompok dengan pembayaran premi yang rendah. Dengan metode seperti ini diharapkan pihak tertanggung merasa adil dalam pembayaran premi sesuai dengan tingkat risiko yang mungkin akan diderita.
Keyword: Credibility Theory, Poisson-Gamma Model, Normal Model, Buhlmann Model

Judul: Penghitungan Premi dengan Menggunakan Model Kredibilitas Buhlmann dan Buhlmann-Straub
Abstrak: Model kredibilitas merupakan salah satu metode untuk menghitung premi yang akan dibayarkan peserta asuransi kepada perusahaan asuransi menggunakan data klaim sebelumnya dari peserta asuransi. Pada karya ilmiah ini, premi peserta asuransi dihitung menggunakan model kredibilitas Buhlmann dan Buhlmann- Straub. Pada model Buhlmann, data klaim peserta asuransi yang dimiliki perusahaan asuransi diketahui untuk satu peserta asuransi, model Buhlmann- Straub digunakan saat data klaim setiap kelompok peserta asuransi memiliki keragaman jumlah individu. Premi dari peserta asuransi private motor insurance Central Bank of Ireland dihitung berdasarkan model kredibilitas Buhlmann dan premi dari kelompok peserta asuransi Social Security Disability Insurance the United States Social Security Administration dihitung berdasarkan model kredibilitas Buhlmann-Straub. Penghitungan premi dengan kedua model kredibilitas tersebut memerlukan pendugaan non parametrik untuk memperoleh penduga takbias bagi nilai harapan hypothetical mean, nilai harapan process variance, dan ragam hypothetical mean untuk mendapatkan faktor kredibilitas sehingga didapatkan premi tahun berikutnya.
Keyword: kredibilitas, model Buhlmann, model Buhlmann-Straub

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