Judul: Cognitive Style and Working Memory of The First Year Undergraduate IPB Student
Abstrak: Manusia memiliki dua macam sistem pemrosesan informasi antara lain, gaya berpikir intuitif dan gaya berfikir rasional atau analitik. Working memory adalah sistem memori yang mengatur atensi ketika sedang melakukan suatu perintah. Penelitian ini bertujuan untuk mengetahui cognitive style dan working memory mahasiswa IPB Tingkat Persiapan Bersama (TPB) dan untuk mengetahui kovariasinya dalam mempengaruhi prestasi akademik. Cognitive style ditentukan dengan menggunakan cognitive reflection test (CRT) dan kapasitas working memory ditentukan dengan menggunakan animasi delayed matching to sample task (DMS). Hasil menunjukkan bahwa mahasiswa TPB IPB memiliki gaya berpikir intuitif dan memiliki kapasitas working memory sebesar 66.7%. berdasarkan regresinya, semakin tinggi skor CRT semakin tinggi pula IPK nya. Cognitive style dan working memory memiliki dimensi yang berbeda dalam penggunaannya sehari-hari. Gaya berpikir analitik hanya dibutuhkan untuk mencapai kesuksesan akademik sementara itu working memory sangat dibutuhkan untuk semua aktivitas sehari-hari.
Keyword: 

Judul: Relationship between Smartphone Usage and Cognitive Style of IPB University Students.
Abstrak: Saat ini, smartphone merupakan produk elektronik yang populer dan banyak dibeli oleh masyarakat. Jumlah penggunaan smartphone terus bertambah setiap hari selama beberapa tahun terakhir. Lebih dari 95% mahasiswa di Indonesia memiliki smartphone. Penelitian menemukan bahwa penggunaan smartphone dapat memiliki pengaruh terhadap kemampuan berpikir, fokus, daya ingat, dan mengontrol emosi penggunanya. Tujuan dari penelitian ini adalah untuk menentukan korelasi antara intensitas penggunaan smartphone dengan gaya kognitif mahasiswa Institut Pertanian Bogor. Intensitas penggunaan smartphone mahasiswa ditentukan dengan menggunakan kuesioner Smartphone Usage Questionnaire-General (SUQG) dan gaya kognitif mahasiswa dilihat menggunakan Cognitive Reflection Test (CRT). Hasil menunjukkan bahwa mahasiswa IPB menggunakan smartphone dalam tingkat hampir kecanduan dengan rata-rata poin 5 dari poin maksimum 7. Berdasarkan data yang diperoleh, 57% mahasiswa IPB memiliki gaya berpikir intuitif. Penggunaan smartphone dengan gaya kognitif mahasiswa memiliki hubungan korelasi signifikan (p=0.0071). IPK mahasiswa IPB cukup tinggi dengan rata-rata 3.1. Semakin tinggi nilai CRT yang dimiliki mahasiswa maka semakin rendah penggunaan smartphone mahasiswa tersebut. Nilai IPK yang diraih memiliki korelasi tidak signifikan dengan gaya kognitif mahasiswa IPB.
Keyword: gawai elektronik, SUQG, CRT, kemampuan berpikir, IPK

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