Judul: Rate of Return to Investment in Education in Faculty of Economics and Management IPB University Graduates
Abstrak: Perguruan tinggi dituntut untuk mencapai target Indeks Kinerja Utama Perguruan Tinggi Negeri (IKU-PTN) yang dikeluarkan oleh Kementerian Pendidikan dan Kebudayaan terkait lulusan yang layak. Maka dari itu, perguruan tinggi perlu untuk melakukan survey serta penilaian. Hal tersebut mendorong Fakultas Ekonomi dan Manajemen untuk meningkatkan mutu lulusan maupun pelayanan. Sehingga tujuan penelitian ini adalah untuk mengidentifikasi dan menganalisa hasil pengembalian investasi pendidikan serta kelayakan pada lulusan Fakultas Ekonomi dan Manajemen IPB. Jenis data yang digunakan dalam penelitian adalah data kuantitatif dan kualitatif melalui data primer dan sekunder. Metode penentuan dan penarikan sampel yang digunakan adalah nonprobability sampling dan purposive sampling. Jumlah sampel dalam penelitian ini sebanyak 150 orang. Metode yang digunakan berupa analisis deskriptif dan pengembalian investasi. Analisis deskriptif digunakan untuk mengolah data pada karakteristik responden. Adapun analisis pengembalian investasi berupa Benefit Cost Ratio (BCR), Rate of Return (ROR), Cost Benefit Analysis (CBA), Payback Period (PP), Net Present Value (NPV), dan Internal Rate of Return (IRR) serta analisis loyalitas lulusan menggunakan Net Promoter Score (NPS). Hasil penelitian ini menunjukkan, bahwa kelayakan investasi pendidikan dari gaji lulusan dinyatakan layak namun hasil penghitungan terkait nilai manfaat berdasarkan tabungan dinyatakan tidak layak. Loyalitas lulusan terhadap Fakultas Ekonomi dan Manajemen mayoritas berada dalam kategori passive.
Keyword: education, investment, rate of return, quality of graduates

Judul: Efficiency of Room Use on Output  Performance Indicator at IPB University
Abstrak: IPB University memiliki berbagai jenis ruangan yang tersebar pada unit-unit fakultas maupun departemen. Namun, ketersediaan ruangan antarfakultas dan antardepartemen tidak merata. Penelitian ini bertujuan untuk menggambarkan sejauh mana efisiensi penggunaan ruangan fakultas/departemen terkait dengan indikator kinerja output yang dihasilkan. Output yang dimaksud adalah jumlah lulusan, jumlah publikasi/HKI (Hak Kekayaan Intelektual), dan pendapatan kerja sama yang telah dicapai pada tahun 2018-2020. Analisis yang digunakan adalah analisis biplot, plot tebaran, dan statistika deskriptif sederhana. Secara umum, hasil yang diperoleh menunjukan bahwa belum ada fakultas yang relatif efisien dalam menghasilkan semua output sekaligus. Hanya beberapa fakultas yang relatif efisien dalam menghasilkan dua output, yaitu FEM dan Sekolah Bisnis yang cenderung efisien dalam menghasilkan lulusan dan pendapatan kerja sama serta FAHUTAN dan FEMA yang cenderung efisien dalam menghasilkan publikasi/HKI dan pendapatan kerja sama. Namun, FKH, FPIK, dan FAPET cenderung tidak efisien dalam menghasilkan seluruh output. Departemen Arsitektur Lanskap, Statistika, dan Teknologi Industri Pertanian relatif efisien dalam menghasilkan lulusan dan publikasi/HKI, sementara Departemen Ilmu Produksi dan Teknologi Peternakan dengan Ilmu Nutrisi dan Teknologi Pakan relatif tidak efisien., IPB University has various rooms spread across faculties and departments units. However, the availability of space interfaculty and interdepartment is not distributed. This research aims to describe how the efficiency of the faculty/department rooms is associated with the output performance indicators produced. The output performance indicators are the number of graduates, number of publications/IPR (Intelectual Property Right), and cooperation income that has been achieved in 2018-2020. The analysis used is biplot analysis, scatter plot, and simple descriptive statistics. Generally, the results obtained show that no faculty that is relatively efficient in producing all outputs at once. Only a few faculties are relatively efficient in producing two outputs, such as Faculty of Economics and Management with School of Business which tend to be efficient in producing graduates and cooperation income, then Faculty of Forestry with Human Ecology, which tend to be efficient in producing publications/IPR and cooperation income. However, Faculty of Veterinary Medicine, Fisheries and Marine Science, and Animal Science tend to be inefficient in producing all outputs. Department of Landscape Architecture, Statistics, and Agroindustrial Technology are relatively efficient in producing graduates and publications/IPR, while Department of Animal Production and Technology with Nutrition and Feed Technology are relatively inefficient.
Keyword: biplot, efficiency, output performance indicator, room, scatter plot

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