Judul: Analisis Konsentrasi Spasial dan Faktor yang Memengaruhi Aglomerasi Industri Manufaktur di Kawasan Barat Indonesia
Abstrak: Regional inequalities can be occured because of differences in resources and the economic activity generated by each region. Manufacturing industry is important sector that can encourage growth and development of other sectors. The purposes of this research is to analyze the development of regional imbalances, spatial concentration and agglomeration factor of manufacturing industry in the western region of Indonesia. This research uses the analysis tool Williamson Index, Geography Information System (GIS), Hoover Balassa Index and panel data. Results of the study indicate that there is a relatively medium regional imbalances in the distribution income and there are regions have point of consentration spatial of manufacturing industries. Variables that constantly affect the agglomeration of manufacturing industry is Competition Industry Index, size of company, foreign investment, road, value added and number of large and medium manufacturing industries. Map of the distribution of the location of the manufacturing industry which is more evenly distributed can increase the income and welfare of society.
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Judul: Concentration Trend and The Factors that Influence Large Medium Scale Manufacture Industry Agglomeration in West Java
Abstrak: The mean value of West Java’s economic growth in period 2001-2008 is higher than the national economic growth mean value (5,58% for West Java, while national economic growth mean value is 4,79%). This high economic growth is underpinned by the manufacturing industry as a major component of GRDP. But on the other hand, there is still disparities problem between region in West Java. The purpose of this study is to analyze the regional inequalities, the concentration of industry and the factors that influence agglomeration of manufacturing industries. This study was using secondary data from BPS including GRDP and large/ medium scale industry raw data. Using the descriptive analysis (Theils, Harfindahl and Elisson Glaeser Index) and also panel data method, the result shows that the concentration of industry is concentrated in Bekasi, Bogor and Bandung regency, and there are areas of concentration expansion of Karawang and Purwakarta. Factors that influence the agglomeration of manufacturing industries in Indonesia, are firm size, economies of scale, diversity of industry, ownership of foreign capital, wages, size of market and road infrastructure.
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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