Judul: The Impact of Investment-Driven Sectoral Productivity Change on Regional Economic Disparity in Indonesia
Abstrak: The objectives of this study are to examine the impact of sectoral investment on microeconomic and macroeconomic performances and on regional disparity in Indonesia. Spatial inequality is an important issue in economic development and Indonesia still has very large regional income disparity. The sectoral investment has an important role in increasing productivity in order to encourage economic growth and equity. Investment allocation in Indonesia is still focused on the industrial sector and the Island of Java. Even though structural change in the Indonesian economy is happening, which is the shift from predominantly agricultural economy to one dominated by the industrial and services sectors, but most of the regions’ economies are still dominated by the agricultural sector and in general their incomes per capita are relatively low. The multiregional Computable General Equilibrium (CGE) top-down model is a comfortable method to analyze the objectives of this study. The main finding was that the priority of investment allocation into the agricultural, agro-industrial and infrastructural sectors (the implementation of the Agricultural Development Led-Industrialisation (ADLI) strategy supported by infrastructure construction) shows the best impact on increasing the sectoral output and growth and on decreasing regional disparity. This happens because infrastructural investment can generate productivity growth in all economic sectors and investment in agricultural sector shows the highest productivity growth compared to productivity growth in the other sectors. Therefore, increases in agricultural investment has a relatively strong impact upon regional disparity reduction and increases in infrastructural investment strongly encourages improvements in the sectoral and national output. But, the ADLI strategy supported by infrastructure construction has a weak impact on increasing the sectoral employment and on distributing equitable households income due to poor development in the agro-industrial sector.
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Judul: Impact of investment inflows on regional disparity in Indonesia
Abstrak: Some tactical pilicies related to region development, whether they were intended or not, were implemented since the early 1970's. Moreover some policies have been formulated in 1990s to reduce regional disparities. However, they are more in normative level than implementation. An increasing level of regional income inequality, which accompanied the rapid economic growth, shows the failure of same those policies. The large differences in economic indicators among provincies in Indonesia are no doubt due to the very significant inequality of investment inflows. The problem of ecomonic disparity across Indonesia will still exist. This study aims to analyze the disparity of regional economy by testing the income convergence; to identify the relationship between regional income and investment inflows and to find the determinants of foreign investment inflows into provinces
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Judul: Penentuan tembaga secara spektrofotometri sinar tampak sebagai senyawa kompleks asosiasi-ion dengan biru metilena melalui ekstraksi pelarut
Abstrak: Analisis tembaga menggunakan metode spektrofotometri sinar tampak dapat dilakukan berdasarkan kemampuan ion tembaga membentuk senyawa kompleks berwarna dengan beberapa zat pengompleks. Penelitian ini dilakukan untuk menentukan tembaga sebagai kompleks asosiasi-ion menggunakan ligan tiosulfat pada pembentukan ion kompleksnya. Pembentukan ion tiosulfato- kuprat(1-) dilakukan dengan mereaksikan tembaga (II) dengan tiosulfat. Kompleks yang terbentuk diekstraksi ke dalam diklorometana sebagai kompleks asosiasi-ion tiosulfatokuprat(1-) dengan biru metilena [MB,CuS2O3]. Kompleks asosiasi-ion [MB,CuS2O3] mempunyai panjang gelombang dengan serapan maksimum 644 nm. Kondisi optimum pengukuran yang dilakukan pada panjang gelombang tersebut adalah pH 3,24, konsentrasi tiosulfat 0,10 M, konsentrasi biru metilena 0,08 M, dan waktu ekstraksi 2 menit. Kompleks asosiasi-ion [MB,CuS2O3] stabil sampai hari ke-4. Metode penentuan tembaga ini mempunyai batas deteksi 4,973 × 105 M, sensitivitas metode 8,418 × 10° M, dan perolehan kembali sebesar 131,07%. Ion kalsium(II), magnesium(II), besi(II), dan aluminium(III) mengganggu proses pembentukan kompleks asosiasi-ion sedangkan ion zink(II) tidak mengganggu.
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