Judul: Analisis keberhasilan studi mahasiswa program magister sekolah pascasarjana ipb
Abstrak: Status penerimaan mahasiswa magister institut pertanian bogor (ipb) dibagi menjadi dua, yaitu status percobaan dan status biasa. Hasil studi mahasiswa magister dievaluasi berdasarkan status penerimaan tersebut. Penelitian ini bertujuan mendeskripsikan karakteristik mahasiswa magister, menganalisis faktor-faktor yang mempengaruhi keberhasilan mahasiswa magister tahap evaluasi, dan mengkaji faktor-faktor yang mempengaruhi keberhasilan lulusan mahasiswa magister berdasarkan ipk dan masa studi. Analisis deskriptif digunakan untuk mendapatkan gambaran umum karakteristik mahasiswa magister berdasarkan status penerimaan mahasiswa, sedangkan faktor-faktor yang mempengaruhi keberhasilan mahasiswa baik tahap evaluasi maupun kelulusan dianalisis menggunakan analisis cart (classification and regression tree). Faktor-faktor yang mempengaruhi keberhasilan mahasiswa pada tahap evaluasi adalah pilihan fakultas program studi s2, ipk s1, dan sumber biaya pendidikan. Mahasiswa yang memilih program studi berasal ilmu formal memiliki persentase kegagalan tertinggi dibandingkan yang memilih fakultas lainnya. Secara umum, faktor-faktor yang mempengaruhi keberhasilan lulusan mahasiswa magister adalah pilihan fakultas program studi s2, ipk s1, status perguruan tinggi s1, akreditasi program studi s1, letak perguruan tinggi s1, keserumpunan program studi, sumber biaya pendidikan, profesi, dan status perkawinan
Keyword: classification and regression tree (cart), keberhasilan mahasiswa, status biasa, status percobaan

Judul: Identifikasi Karakteristik Lulusan Kelompok Program Studi Magister IPB Berdasarkan Keberhasilan Studi Mahasiswa
Abstrak: Graduate School of Bogor Agricultural University (IPB-SPs) has been established since 1975 started by seven Masters program. In the mean time, the IPB Graduate School had grown to 67 study programs. The success of student in each program could be assesed by their grade point average (GPA) and the study duration. Based on those characteristics, the author figure out that the 61 study programs could be grouped into four clusters. Cluster 1 includes study program which has the best academic characteristic among the clusters. It has highest level of GPA and shortest duration of study. This achievement might be induced by the background characteristic of the students. The member of this cluster associated to young students from high reputation university. Meanwhile, Cluster 2 is cluster which has the mean value of GPA around its mean value and also has a longer duration of study. The member of this cluster are the students whose characterictics are poor. It happened because the background characteristic of bachelor students are not correlated with the Masters program and their GPA are below standard.
Keyword: cluster analysis, multiple correspondence analysis, Master Program

Judul: Hybrid solar cells of ZnO nanoparticles/chlorophyll was modified metal ions (Zn2+ and Cu2+ )
Abstrak: Zinc Oxide (ZnO) is a n-type semiconductor with a wide the energy band (Band Gap) is 3.37 eV at room temperature and 3.34 eV at low temperature with a large exiton binding energy is 60 meV. ZnO has been synthesized by hydrothermal method, resulting in a decrease in particle size over the duration of the hydrothermal changes. Crystallographic structure of ZnO were characterized using XRD, has shown the characteristic pattern of a hexagonal wurtzite structure, the crystallite size increases to changes in particle size. Changes in particle size has also led to a change in the absorption peak of ZnO as has been demonstrated posted under test using the optical properties of UV-Vis spectrophotometer. Changes of this uptake has also led to changes in the energy band gap, which increases its band gap energy of the particle size. In electronic applications, especially in solar cells. Chlorophyll is considered less effective, because of their very nature are easily degraded as a result of several reactions which are acid, lighting and temperature. The results of the stability test using a halogen lamp 34 W/m2 for 5 hours, that the substitution of chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form more stable than natural chlorophyll. The characterization of the optical properties, the combination of ZnO / chlorophyll in the form of hybrid films has led to a shift in the absorption region of ZnO becomes more widely from the UV to Visible. ZnO/chlorophyll has absorption range of 350-515 nm, ZnO / Zn-feofitin 332-401 nm and 332-632 nm for Cu-feofitin. The combination of ZnO/chlorophyll and CuSCN as a solid electrolite in hybrid solar cell, a modified chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form a more stable I-V curve. It is characterized by its fill factor value greater than natural chlorophyll. Nevertheless, solar cells with natural chlorophyll has been able to produce higher efficiency values of chlorophyll were substituted.
Keyword: Hydrothermal, ZnO/Chlorophyll modified, Hybrid Solar Cell