Judul: Hubungan Hasil Studi dan Intensitas Tinggal Penghuni Asrama TPB IPB Tahun 2011 Menggunakan Analisis Korespondensi dan Regresi Logistik Biner
Abstrak: Asrama TPB IPB merupakan salah satu program wajib untuk mahasiswa tingkat pertama di IPB. Pada penelitian ini ditetapkan empat kriteria intensitas tinggal penghuni yaitu(1) selalu tinggal, (2)semester satu saja, (3) dua pekan di awal, dan (4) pulang setiap akhir pekan. Beragamnya intensitas tinggal ini berhubungan dengan faktor ketidaknyamanan penghuni terkait fasilitas asrama, interaksi sosial antar sesama penghuni dan banyaknya kegiatan. Hasil analisis korespondensi ditetapkan tiga kelompok yang memiiki kedekatan hubungan. Kelompok pertama (penghuni yang hanya tinggal semester 1 saja,dua pekan awal, asal Bogor) dicirikan oleh nilai IPK 2.50 < IPK ≤ 3.00, kelompok kedua (penghuni yang selalu tinggal di asrama berasal dari daerah Non Jabodetabek, jalur masuk SNMPTN undangan) dicirikan oleh memiliki IPK kategori 3.00 < IPK ≤ 3.50 dan IPK ≥ 3.50 dan kelompok ketiga (penghuni yang pulang akhir pekan berasal dari daerah Jadetabek, jalur masuk SNMPTN Tulis) dicirikan oleh kategori nilai IPK ≤ 2.50. Hasil analisis regresi logistik biner menunjukkan bahwa intensitas tinggal berpengaruh terhadap nilai IPK dengan 18% keragaman nilai IPK dijelaskan oleh intensitas tinggal penghuninya dan 82% dijelaskan oleh faktor lainnya yang tidak diteliti dalam penelitian ini.
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Judul: Analisis Kepuasan Mahasiswa TPB-IPB terhadap Fasilitas Asrama
Abstrak: The objective of this research is to measure satisfaction level of the first year students on dormitory facilities. This research also aims to determine factors that affect satisfaction by using structural equation model. The objects of this research are 238 first year students, whose data are collected using simple random sampling. Students are divided into two groups, namely those who live in the male dormitory as well as in the female dormitory. This research analyze the data using structural equation model, with overall satisfaction as endogenous latent variable, while for exogenous latent variables are bedroom, bathroom, canteen, worship, sports, and parking facilities, as well as security, senior resident, dormitory regulations, and the dormitory’s program. From the results of descriptive analysis, it can be concluded that 65% of the students express dissatisfaction with dormitory facilities, while 35% are satisfied. From the results of structural equation modeling, it is show that the factors influencing students’ satisfaction are bedroom (dissatisfied), security (dissatisfied), and dormitory program (satisfied).
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Judul: Peptides Hydrolysate Derived from Collagen of Snakehead Murrel (Channa striata) Skin Demonstrate Anti-oxidant and Anti-cholesterol Activities.
Abstrak: Anti-cholesterol and anti-oxidant play crucial role to combat cardiovascular disease (CVD) related to formation of arterial plagues from oxidation of cholesterol. In the past decades, research on bioactive peptides demonstrating anti-cholesterol and anti-oxidant activities have been reported as the alternative drugs. In this study, acid soluble collagen was extracted from the skin of snakehead murrel and employed to induce production of collagenase by Bacillus licheniformis F11.4. The collagenases secreted were in turn purified through AKTA Purifier (ion exchange, DEAE column) and used to produce peptides hydrolysate. The purified enzymes were grouped in two distinct collagenase fractions, designated as fraction D and F. Peptides hydrolysate produced by the fraction D was found to demonstrate HMG-CoA inhibitor activity comparable to pravastatin and limited anti-oxidant activity. Meanwhile, peptides hydrolysate generated using the fraction F demonstrated anti-oxidant activity comparable to BHT (2mM), vitamin C (2mM) and vitamin E (2mM), but limited HMG-CoA activity. Combination of the fraction D and F resulted in substantial HMG-CoA inhibition and anti-oxidant activities.
Keyword: Anti-cholesterol, anti-oxidant, bioactive peptide, collagen, collagenase, snakehead murrel