Judul: The Willingness to Pay Analysis of Bogor Regency Housewives Against Certified Halal Beef
Abstrak: Permintaan masyarakat Indonesia terhadap daging sapi dan olahannya meningkat dalam beberapa tahun terakhir. Penelitian ini bertujuan untuk menganalisis nilai dan faktor yang memengaruhi Willingness to Pay Ibu rumah tangga di Kabupaten Bogor terhadap daging sapi yang telah memiliki sertifikat halal. Objek penelitian ini adalah Ibu rumah tangga yang berdomisili di Kabupaten Bogor. Variabel-variabel yang digunakan dalam penelitian ini adalah pengetahuan terhadap daging halal, kepedulian terhadap sertifikasi halal, frekuensi pembelian, dan pendapatan. Metode analisis yang digunakan dalam penelitian ini adalah analisis regresi linier berganda dan Contingent Valuation Methods. Hasil dari penelitian ini menunjukkan bahwa nilai rataan (EWTP) kesediaan konsumen terhadap daging sapi bersertifikat halal adalah sebesar Rp 15 260. Variabel pengetahuan terhadap daging halal, kepedulian terhadap sertifikat halal, dan pendapatan berpengaruh positif dan signifikan terhadap besarnya nilai Willingness to Pay daging sapi bersertifikat halal, sedangkan variabel frekuensi pembelian tidak memiliki pengaruh yang signifikan., The demand of Indonesian people for beef and its processed products has increased in specified years. This study aims to determine the value and factors that influence Wilingness to Pay for housewives in Bogor Regency towards beef that has halal certificates. The object of this research is housewifes who live in Bogor Regency. The variables used in this study are knowledge of halal meat, concern for halal certification, frequency of purchase, and income. The analysis method used in this study is multiple linear regression analysis and Contingent Valuation Methods. The results of this study indicate that the average value (EWTP) of consumers' willingness to pay for halal certified beef is IDR 15 260. Knowledge about halal meat, concern for halal certificates, and income have a positive and significant effect on the value of Willingness to Pay for halal certified beef, while the purchase frequency variable does not have a significant effect.
Keyword: Contingent valuation methods, halal certificate, halal meat, multiple linear regression, willingness to pay

Judul: Willingness to Pay Konsumen dalam Membeli Daging di Restoran All You Can Eat Bersertifikat Halal
Abstrak: Daging merupakan salah satu bahan kritis yang penting diketahui kejelasan kehalalannya. Namun, banyak restoran All you can eat (AYCE) yang menyediakan daging belum memiliki sertifikat halal. Penelitian ini dilakukan untuk menganalisis nilai dan faktor yang memengaruhi willingness to pay konsumen terhadap restoran AYCE bersertifikat halal. Objek penelitian ini adalah konsumen restoran AYCE di Jakarta. Variabel yang digunakan adalah kesadaran akan halal, pengetahuan akan sertifikat halal, pendapatan, komitmen beragama, serta jenis kelamin, status, dan pendidikan sebagai variabel kontrol. Metode analisis yang digunakan adalah analisis deskriptif, regresi logistik dan Contingent valuation methods (CVM). Responden pada penelitian ini berjumlah 103 orang yang beraktifitas di Jakarta. Hasil dari penelitian ini menunjukan bahwa nilai rataan kesediaan konsumen restoran AYCE bersertifikat halal sebesar Rp19.223. Pengetahuan tentang sertifikat halal kategori tinggi dan pendapatan kategori sedang berpengaruh signifikan tetapi bernilai negatif. Kesadaran akan halal dan komitmen beragama tidak berpengaruh signifikan.
Keyword: AYCE, CVM, halal certificate, logistic regression model, WTP

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