Judul: Kasus Mahasiswa Institut Pertanian Bogor Tahun 1997/1998
Abstrak: Tingkat keberhasilan mahasiswa dalam proses studi di perguruan tinggi dipengaruhi oleh banyak faktor. Secara umum dapat dikelompokkan menjadi dua faktor, yaitu : faklor intelektual dan faklor nonintelektual. Penelitian ini dilakukan untuk menelaah pengaruh kedua faktor tersebut terhadap prestasi akademik mahasiswa IPB, baik yang diterima melalui jalur USMI maupun UMPTN. Beragamnya kemarnpuan dan karakteristik mahasiswa yang masuk di suatu fakultas terkait bidang ilmu yang ditekuni juga mencirikan kondisi dan potensi akademik mahasiswa di fakultas tersebm. Hal ini dicirikan oleh nilai IPK, NEM dan nilai rapor SMU (matematika, fisika, kimia dan biologi).
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Judul: Pola hubungan statistik prestasi mahasiswa pada berbagai tingkat dan jurusan di Institut Pertanian Bogor
Abstrak: Lulusan SLTA yang diterima di IPB umumnya berasal dari berbagai lingkungan kehidupan keluarga, kebudayaan, sosial ekonomi, dan genetika yang berbeda. Perbedaan ini menyebabkan pola nalar mereka berbeda sehinnga hasil belajar merekapun berbeda ketika mengikuti perkuliahan di TPB. Berdasarkan latar belakang tersebut, maka tujuan penelitian ini adalah untuk mendapatkan gambaran mengenai pola nalar mahasiswa serta menemukan hubungan antara prestasi akademik di TPB, dengan pola prestasi akademik sepanjang mengikuti program studi setelah di fakultas hinggga lulus menjadi sarjana. Penguraian secara ra deskriptif diharapkan dapat memberikan informasi mengenai prasyarat apa yang harus diperhatikan mahasiswa. Agar dapat memilih program studi yang sesuai dengan pola daya nalar yang dimilikinya, dan selanjutnya akan berguna bagi yang memerlukan. ...
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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