Judul: Efek Threshold dalam Hubungan antara Inflasi dan Pertumbuhan Ekonomi Regional di Indonesia
Abstrak: Penelitian terbaru menyatakan bahwa hubungan antara inflasi dan pertumbuhan ekonomi tidaklah linier. Saat inflasi melebihi threshold tertentu, akan berpengaruh negatif terhadap pertumbuhan ekonomi. Penelitian ini bertujuan untuk mengetahui hubungan linier dan tidak linier antara inflasi dan variabel kontrol lain dengan pertumbuhan ekonomi di Indonesia menggunakan data panel provinsi. Hubungan linier diuji menggunakan panel fixed effect sedangkan hubungan tidak linier diuji menggunakan panel threshold fixed effect. Secara linier, inflasi berpengaruh negatif terhadap pertumbuhan ekonomi, begitu juga dengan pertumbuhan rasio pengeluaran pemerintah dan pertumbuhan penduduk. Sementara pertumbuhan investasi dan pertumbuhan keterbukaan ekonomi berpengaruh positif terhadap pertumbuhan ekonomi. Saat melakukan uji tidak linier, threshold inflasi yang ditemukan ada dua titik yaitu 5.09 persen dan 9.57 persen. Inflasi di Indonesia berpengaruh negatif terhadap pertumbuhan ekonomi saat nilainya melebihi 9.57 persen. Stakeholder yang bertanggungjawab dalam kebijakan pengendalian inflasi di Indonesia seperti Bank Indonesia (BI) dan Pemerintah Daerah yang tergabung dalam Tim Pemantauan dan Pengendalian Inflasi Daerah (TPID) harus terus berkoordinasi dalam upaya mengendalikan gejolak harga, terutama harga pada level regional baik provinsi, kabupaten maupun kota di Indonesia. Hal ini dilakukan karena inflasi yang tinggi dan bergejolak tidaklah bagus bagi perekonomian. Bank Indonesia sebaiknya membuat target inflasi jangka panjang dengan batas atas sebesar threshold inflasi 5.09 persen. Sementara itu batas atas target inflasi jangka pendek sebesar threshold inflasi 9.57 persen. Kata kunci: inflasi, pertumbuhan ekonomi, threshold
Keyword: inflasi, pertumbuhan ekonomi, threshold

Judul: Inflasi dan Pertumbuhan Ekonomi: Pendugaan Ambang Batas Inflasi di Indonesia.
Abstrak: High inflation is regarded as a problems in the economy. Indonesia experienced economic collapse as a result of failing to control inflation volatility. This is used as a reason for the current authorities to implement low-inflation policy. The economist argues that low-inflation can promote economic growth faster. In fact, low-inflation policy is not favorable because it interferes the business investment climate. On the other hand the pattern of the inflation and economic growth data in Indonesia is also inconsistent (indicating a positive relationship, negative and neutral). The purpose of this study is to determine the effect of inflation on economic growth, as well as to search inflation threshold in Indonesia in the period 1970- 2012. Using multiple linear regression, this study shows that inflation negatively impacts on economic growth. Inflation threshold identification by Khan and Senhadji model (2001) stated that inflation threshold in Indonesia is 7.11%. While according to Hansen model (1997, 2000), inflation threshold in Indonesia is 9.53%. Based on some model selection criterias, the inflation threshold implied by Hansen model is more apropriate. Inflation has a positive effect on economic growth if the value is less than the thresholds and negative when it exceeds the thresholds. This result supports Chowdhury and Ham (2009) finding who stated that inflation threshold in Indonesia is between 8.5 per cent and 11 per cent. The two studies imply that the central bank should only pursue active policy measures when inflation is above the threshold. Thus, ITF cannot be generalized to all levels of inflation.
Keyword: economic growth, inflation, threshold

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