Judul: Study of the consumption pattern and food demand in eastern region of Indonesia
Abstrak: Penelitian bertujuan untuk mempelajari pola konsumsi dan permintaan pangan di wilayah Kawasan Timur Indonesia (KTI). Data yang digunakan adalah data Survei Sosial Ekonomi Nasional (Susenas) tahun 1996 yang dikumpulkan oleh Biro Pusat Statistik (BPS). Analisis deskriptif digunakan untuk mempelajari pola konsumsi, sedangkan untuk menganalsis permintaan pangan digunakan model ekonometrika 'linear approximation almost ideal demand system' (MAIDS)., This research is aimed to study consumption pattern and food demand in Eastern Region of Indonesia (ERI). The study used data resulted from National Socio-Economic Survey (Susenas) 1996 collected by Central Bureau of Statistics (Biro Pusat Statistik). Descriptive analysis is used for studying consumption pattern and Linear Approximation Almost Ideal Demand System (LA/AIDS) model is used for analyzing food demand. Results of the study show as follows : (1) rice is dominant in structure of household budget, energy and protein contribution of household in ERI, (2) in some provinces of ERI, there was shifting in consumption pattern of stapple food from non-rice to rice between 1976 and 1996, (3) consumption of food as source of carbohydrate in rural areas is higher than in urban areas, but it was vice versa for the consumption, (5) household food demand in rural areas was more responsive to price and income changes than the household in urban areas, and household with the higher income was less responsive to the price and income changes, and (6) number of household member and education level of head of household influenced significantly food demand of household in ERI.
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Judul: Quantity and Quality Demand Analysis of Rice Household in DKI Jakarta Province
Abstrak: Undang-undang pangan menjamin ketersediaan pangan dan kecukupan pangan bagi tiap penduduk agar dapat tercipta manusia yang berkualitas. Beras merupakan salah satu jenis pangan pokok penduduk yang masih menjadi pokok perhatian pemerintah. Penduduk DKI Jakarta dengan rata-rata tingkat pendapatan yang paling tinggi secara nasional memiliki preferensi tertentu terhadap jenis beras yang dikonsumsi. Kelompok pendapatan yang semakin tinggi mengkonsumsi beras dengan rata-rata kuantitas semakin sedikit. Namun kelompok pendapatan yang semakin tinggi mengeluarkan uang lebih banyak untuk mengkonsumsi beras. Hal ini menunjukkan kualitas yang semakin baik yang dikonsumsi oleh kelompok pendapatan yang tinggi tercermin dari harga yang semakin mahal. Tujuan studi ini adalah (1) untuk menganalisis gambaran pola konsumsi beras DKI Jakarta; (2) untuk menganalisis respon perubahan kuantitas dan kualitas beras akibat perubahan harga dan pendapatan rumah tangga di Provinsi DKI Jakarta. Pola konsumsi dianalisis secara deksriptif sementara perubahan respon permintaan dianalisis dengan menggunakan analisis regresi linier berganda. yaitu data dari modul pengeluaran konsumsi dan kor rumah tangga hasil SUSENAS (Survei Sosial Ekonomi Nasional) untuk Provinsi DKI Jakarta periode Maret tahun 2017. Data tersebut merupakan cross section dengan sampling unit rumah tangga. Data yang diperoleh kemudian dianalisis dengan menggunakan model persamaan tunggal dengan bentuk semilog Hasil analisis menunjukkan bahwa rumah tangga pada kelompok pendapatan tinggi mengonsumsi beras dalam kuantitas yang lebih sedikit dibandingkan dengan rumah tangga pada kelompok pendapatan rendah. Namun, pengeluaran rumah tangga pada kelompok pendapatan tinggi untuk beras lebih besar jika dibandingkan dengan rumah tangga pada kelompok pendapatan rendah. Hal ini mengindikasikan adanya pemilihan kualitas beras yang lebih baik pada kelompok rumah tangga berpendapatan tinggi. Hasil analisis regresi dan nilai elastisitas menunjukan bahwa rumah tangga pada kelompok pendapatan yang semakin tinggi memiliki sensitivitas yang semakin rendah terhadap perubahan harga beras dan pendapatan. Hal ini ditunjukkan dari nilai elastisitas kualitas beras yang sangat rendah. Rekomendasi dari hasil penelitian ini adalah pemerintah harus lebih memperhatikan produksi beras, tidak hanya dari sisi kuantitas tetapi juga dari sisi kualitas. Beras yang berkualitas akan terwujud dengan memperhatikan kualitas benih, proses penanaman yang baik, proses perawatan hingga perawatan pasca panen. Beras yang berkualitas akan menciptakan masyarakat yang memiliki daya saing tinggi., Food legislation guarantees food availability and sufficiency for each resident in order to create quality human beings. Rice is one of the basic staple food that become the main concern of the government. The population of DKI Jakarta has the highest average income level nationally which have certain preferences for the type of rice consumed. The number of household members in high income group is getting smaller. This also affects the quantity of rice consumed. Income groups that are increasingly consuming rice with a smaller quantity on average. But, higher income groups spend more money on rice. This shows the better quality consumed by high income groups, it reflected by price which getting more expensive. The objectives of this study are: (1) to analyze the pattern of DKI Jakarta rice consumption (2) to analyze the change response in quantity and quality demand of rice due to changes in price and income at DKI Jakarta Province. Consumption pattern was analyzed descriptively thus change response demand analyzed by multiple regression
Keyword: quality elasticity, rice demand, semilog model, Perilaku Konsumen, Teori Engel, Elastisitas Kuantitas, Teori Permintaan, Konsep Elastisitas, Pola Konsumsi Beras

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