Judul: Analisis Pengaruh Investasi, Tenaga Kerja, dan Infrastruktur Terhadap Pertumbuhan Ekonomi Provinsi Jawa Barat
Abstrak: Economic growth is one indicator of development success in an area. This study is to analyze the effect of investment, work labour, and infrastructure to economic growth in West Java during the period 1990-2011. This study using time series data of 1990-2011 and it’s utilizes regression analysis of Ordinary Least Square (OLS) and supporting software from Eviews 6 and Minitab. The results of this study indicate that the independent variables FDI, domestic investment, and work labour has a positive and significant relationship to economic growth. It is also found that road length has a negative and significant relationship to economic growth, while government expenditure has not significant effect. Increased of local revenues by goverment should be done with create a conducive invesment climate so that the realization of infrastructure improvements can be accomplished, expanding employment opportunities, and boost government spending to improve the economy of West Java Province
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Judul: Analisis Peran Infrastruktur Terhadap Pertumbuhan Ekonomi Provinsi Jawa Barat
Abstrak: Penyediaan infrastruktur merupakan hal yang sangat penting dalam tahap pembangunan. Infrastruktur memberikan kontribusi terhadap perekonomian daerah dan meningkatkan pembangunan ekonomi dengan memberikan efek langsung maupun tidak langsung. Tujuan penelitian ini adalah untuk menjelaskan perkembangan infrastruktur yang ada di Jawa Barat dan menganalisis peran infrastruktur terhadap pertumbuhan ekonomi di Provinsi Jawa Barat. Analisis ini menggunakan data panel dengan model fixed effect yang menggunakan data di 26 kabupaten / kota Provinsi Jawa Barat dalam kurun waktu 2007-2011. Variabel yang digunakan dalam penelitian ini adalah Produk Domestik Regional Bruto (PDRB) sebagai pengukuran output, panjang jalan (km), jumlah energi listrik terjual (KWh), dan jumlah air bersih yang tersalurkan (m3 ). Hasil menunjukkan bahwa infrastruktur di Jawa Barat terus meningkat. Berdasarkan model dalam analisis, infrastruktur jalan, listrik dan air bersih memiliki efek yang positif dan kontribusi yang signifikan pada pertumbuhan ekonomi daerah dimana infrastruktur listrik memberikan kontribusi terbesar terhadap perekonomian daerah di Provinsi Jawa Barat.
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Judul: Membran Komposit Kitosan-Natrium Alginat untuk Aplikasi Direct Methanol Fuel Cell
Abstrak: Composite of chitosan and sodium alginate can be utilized as base material of proton exchange membrane (PEM). The composite membranes were produced by various concentrations of chitosan-sodium alginate, namely 3:3, 3:4, 3:5, 3:6, 4:3, 5:3, and 6:3 (% b/v). The composites were characterized by using Fourier transform infrared spectrophotometer (FTIR), scanning electron microscope (SEM), and were tested for the performance as PEM from the proton conductivity obtained by using impedance spectrometer. The FTIR spectrum indicated the NH3C group at 1637.29 cm-1 and symmetrical COO group at 1253.68 cm-1 indicating interactions between chitosan and sodium alginate. SEM micrographs showed that the composite membrane was nonporous. Composite membrane with 3:5 chitosan-sodium alginate composition had the highest proton conductivity, namely 9.594 × 10-7 S/cm. Based on this research results, chitosan-sodium alginate composite membrane can be applied well in direct methanol fuel cell system.
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