Judul: Analisis Kepuasan dan Loyalitas Konsumen Restoran Sop Duren Rafi Medan di Bogor
Abstrak: Restoran Sop Duren Rafi Medan merupakan restoran yang menawarkan menu olahan durian dengan menu utama yaitu sop duren. Penelitian ini bertujuan untuk mengidentifikasi karakteristik konsumen, menganalisis proses keputusan pembelian konsumen, tingkat kepuasan konsumen, dan loyalitas konsumen yang berimplikasi terhadap bauran pemasaran dari Restoran Sop Duren Rafi Medan. Metode yang digunakan dalam penelitian ini adalah analisis deskriptif, Customer Satisfaction Index (CSI), Importance Performance Analysis (IPA), dan piramida loyalitas. Karakteristik konsumen Restoran Sop Duren Rafi Medan mayoritas berdomisili di Bogor, belum menikah, berjenis kelamin perempuan, berusia 17- 22 tahun, pendidikan terakhir SMA, berprofesi sebagai pelajar atau mahasiswa dan memiliki pendapatan perbulan sebesar Rp500 000- Rp1 499 999. Pada tahap keputusan pembelian ( pembelian tergantung situasi, sumber yang mempengaruhi adalah teman, hari berkunjung tidak tentu, waktu kerja sore hari), dan keputusan pasca pembelian (konsumen merasa puas dan konsumen bersedia untuk berkunjung kembali). Nilai dari Customer Satisfaction Index (CSI) adalah sebesar 75.52 persen.Tingkat loyalitas konsumen berada pada tingkat committed buyer.
Keyword: Consumer characteristic, Loyality, Satisfaction, Sop Duren Rafi Medan, Management, Customer satisfaction, Desicion process, Marketing mix, Bauran pemasaran, Loyalitas konsumen

Judul: Analisis Kepuasan dan Loyalitas Konsumen Restoran Sop Duren Lodaya Bogor
Abstrak: This study aims to analyze the characteristics of consumers, purchasing decision process, satisfaction and loyalty consumer of Sop Duren Lodaya Restaurant. Respondents in this study were selected by non-probability sampling method with convenience sampling technique. The number of respondents in this study was 100 respondents. Descriptive analysis, Importance Performance Analysis (IPA), Customer Satisfaction Index (CSI) and pyramid loyalty were employed in this study. Most of the customers are 18-24 years old, live in Bogor, pursuing bachelor degree, and single with income between Rp1 500 000 and Rp 2 499 000 per month. CSI of this restaurant was 75.60 percent, implying that the customers are satisfied. Importance Performance Analysis showed that promotion through media, sanitation of the restaurant, comfort of the restaurant, and the availability and sanitation of toilet were the priority to be improved. Customer loyalty level was at the level of committed buyer.
Keyword: Consumer characteristics, IPA, CSI

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