Judul: Model Optimasi Jadwal Ujian Dan Implementasinya Pada Universitas Terbuka
Abstrak: Universitas Terbuka (UT) merupakan perguruan tinggi negeri yang menerapkan sistem pendidikan terbuka dan jarak jauh di Indonesia, yaitu sistem pendidikan di mana pengajar dan mahasiswa terpisah secara fisik atau geografis. UT berperan sebagai fasilitator dalam proses belajar mahasiswa yang bersifat akademik dan nonakademik seperti menyediakan beragam pilihan bahan ajar, media pembelajaran, layanan bantuan belajar, dan pilihan penilaian hasil belajar. Untuk menjalankan peran tersebut maka salah satu tugas yang dilakukan adalah memberikan informasi lebih awal, lengkap dan akurat kepada mahasiswa. Informasi diberikan langsung dari Kantor Pusat UT di Pondok Cabe, Tangerang, Banten dan unit program belajar jarak jauh (UPBJJ) UT yang tersebar di 37 kota di seluruh Indonesia. Contoh informasi yang diberikan adalah jadwal ujian akhir semester (UAS). Jadwal UAS dapat diketahui melalui katalog UT atau dapat diperoleh mahasiswa pada saat melakukan registrasi mata kuliah setiap semester di UPBJJ. UT menawarkan semua mata kuliah setiap semester dan masingmasing mata kuliah dilengkapi informasi jam ujian. Adapun tujuan diberikan jadwal ujian sejak awal adalah agar mahasiswa dapat memilih mata kuliah yang akan diregistrasi pada suatu semester. Mata kuliah yang dipilih adalah mata kuliah yang diujikan pada jam yang berbeda.
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Judul: Evaluasi Efektivitas Sistem Distribusi Toko Buku Online Di Universitas Terbuka
Abstrak: One of the disadvantages faced by UT as an institution with distance learning system is the difficulty of distributing materials to students who are spread throughout the country, in this case UT has applied model of learning materials distribution through online, or better known as online book stores TBO-UT. This study aims to describe the distribution system of TBO-UT. The results shows that, (1) UT’s distribution system is able to increase the level of service in providing the learning materials for students, (2) the current distribution system capable of reducing the cost for students in obtaining the learning materials, (3) the current distribution system could increase the sales volume of learning materials as shown by the increase sales of UT’s modules from time to time. The results of this study also shows that students still face an obstacles in obtaining UT’s modules, this is due to several factors, (1) the delivery of learning materials is usually late from the schedule, (2) students have trouble paying the cost of learning materials since Bank Mandiri is rarely available at their residence, (3) access to UT’s website often does not run smoothly. However for students who work full-time, the service of UT TBO is really helpful. But for students who are unable to access the internet, this would be a barrier in obtaining learning materials.
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Judul: Extraction and Characteristic of Collagen and Nanoparticle Collagen from the Skin of Stingray Fish (Pastinachus solocirostris) as Ingredient of Cosmetics.
Abstrak: Isolation of collagen from the skin of stingray fish (Pastinachus solocirostris) has been successfully conducted with three stages: first soaked in 0.05 M NaOH with a sample/solution ratio of 1:10 (w/v) for 6 hour, second soaked in 0.1 M acetic acid with a sample/solution ratio of 1:6 (w/v) for 2 hour, and third extraction with destilated water at temperature 40 C for 2 hour with a yield of 14.475 % (wet base). Nanoparticle collagen was made with desolvation method using etanol as a desolvating agent with a collagen solution/etanol ratio of 1:1. Yield of nanoparticle collagen was 9.64% (wet base) with particle size of 185.24 nm. Collagen and nanoparticle collagen is in the form of white powder with whiteness degree 72.48% and 60.03%, respectively. Protein is the major component in collagen and nanoparticle collagen (86.97% and 86.18%) with trace amount of ash (0.17% and 0.13%) and fat (0.19% and 0.25%), respectively. Based on sodium dodecyl sulfate-polyacrylamide gel electrophoresis patterns, amino acid composition, and fourier transform infrared (FTIR) spectra of both collagen and nanoparticle collagen were characterized as type I collagens. Nanostructural analysis of collagen and nanoparticle collagen by Scanning Electron Microscopy (SEM) shows that both were separate aggregates. Other characteristics of collagen and nanoparticle collagen were: Tmax of 165.88 C and 156.63 C; Viscosity 292.33 cP dan 110 cP; pH 5.00 dan 4.93; respectively. Collagen has highest solubility at pH 7 and the isoelectric point at pH 6, 9, and 10. Therefore, nanoparticle collagen has highest solubility at pH 3 dan and the isoelectric point at pH 6. Collagen and nanoparticle collagen from skin of stingray fish (Pastinachus solocirostris) has a characteristic for a potential use as a cosmetic ingredient.
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