Judul: Identifikasi Faktor–Faktor Yang Memengaruhi Ketepatan Waktu Kelulusan Mahasiswa Program Sarjana Ipb
Abstrak: Persentase lulus tepat waktu setiap perguruan tinggi umumnya lebih kecil dibandingkan dengan persentase lulus tidak tepat waktu. Penelitian sebelumnya menyatakan persentase kelulusan tepat waktu di IPB hanya sebesar 30.94% sedangkan 69.06% lainnya tidak lulus tepat waktu. Ketidaktepatan waktu kelulusan tersebut dapat disebabkan oleh beberapa faktor yang dapat diidentifikasi oleh suatu analisis statistika. Salah satu analisis yang dapat digunakan yaitu analisis regresi logistik biner dengan peubah respon lulus tepat waktu dan lulus tidak tepat waktu. Hasil analisis regresi logistik biner tersebut mengindikasikan bahwa asal fakultas wisudawan, IPK TPB, jenis kelamin wisudawan, beasiswa, jalur masuk dan minor memengaruhi ketepatan waktu kelulusan. Faktor yang paling memengaruhi ketepatan waktu kelulusan adalah fakultas, hasil tersebut sejalan dengan penelitian sebelumnya. Fakultas yang memiliki odds untuk lulus tepat waktu tertinggi yaitu FEM dengan rasio odds sebesar 8.99 yang artinya odds lulus tepat waktu FEM 8.99 kali dibandingkan FAPERTA.
Keyword: analisis regresi logistik biner, faktor-faktor kelulusan, lulus tepat waktu

Judul: Identification of Factors that Affecting the Timeliness of Graduation in FMIPA IPB Class of 2017 Student
Abstrak: Tingkat kelulusan mahasiswa tepat waktu menjadi salah satu kriteria penilaian akreditasi bagi suatu perguruan tinggi atau program studi, semakin banyak mahasiswa yang lulus tepat waktu maka semakin baik pula kinerjanya. Akan tetapi, berdasarkan data lulusan dari DAPPMB IPB, hanya sekitar 37,46% mahasiswa FMIPA angkatan 2016 yang dapat menyelesaikan studi tepat waktu. Data yang digunakan pada penelitian ini berasal dari DAPPMB IPB. Faktor- faktor yang diduga dapat mempengaruhi ketepatan waktu lulus diantaranya adalah jenis kelamin, asal daerah, minor, program studi, jalur masuk, IPK terakhir, dan kestabilan prestasi. Untuk menganalisis faktor-faktor yang berpengaruh terhadap kelulusan mahasiswa digunakan analisis regresi logistik biner menggunakan regresi stepwise dan 10-fold cross validation. Berdasarkan penelitian ini, faktor-faktor yang memengaruhi ketepatan waktu lulus mahasiswa FMIPA IPB angkatan 2017 adalah program studi, minor, IPK terakhir, dan kestabilan prestasi. Model regresi logistik biner yang diperoleh menghasilkan nilai akurasi sebesar 66,75%, sensitivitas 32,65%, spesifisitas 90,69%, dan AUC sebesar 0,75., The graduation timeliness rate of student is one of the criteria for accreditation assessment for a university or study program, the more students who graduate on time, the more better the performance. However, based on graduate’s data from DAPPMB IPB, only around 37.46% of FMIPA students, class of 2016, that can complete their studies on time. The data used in this research is from DAPPMB IPB. Factors that are suspected affect the timeliness of graduation include gender, regional origin, minor, study program, entrance pathway, the last GPA, and the stability of achievement. Binary logistic regression with stepwise regression and 10-fold cross validation was used to analyze factors that affecting student graduation. Based on this research, factors that affect the timeliness of graduation in FMIPA IPB class of 2017 student are study program, minor, the last GPA, and the stability of achievement. The binary logistic regression modeling results show that the accuracy value is 66,75%, sensitivity 32,65%, specificity 90,69%, and an AUC 0,75.
Keyword: binary logistic regression, graduation factors, student graduation

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