Judul: Dampak nilai tukar dan pertumbuhan uang beredar (M2) terhadap inflasi Indonesia periode tahun 2002-2012
Abstrak: Inflation is a phenomenon of rising prices of goods and services in general. Inflation control becomes an important task for the goverment that controlled prices of goods and services in the community. Inflation rate is influenced by domestic and foreign factors. The crisis that comes from foreign such as the 2005 and 2008 impact of high inflation in the country. The purpose of the study is to see the effect of exchange rate and money growth on inflation Indonesia from 2002 until 2012. Method used in this study is Vector Error Correction Model (VECM). The study used quartal time series from quartal 1 on 2002 until quartal 4 on 2012. According to Impulse Response Function test, the results of this study show that exchange rate variable and money growth variable have a positive impact on inflation for the next twenty quarters (5 years). According to Variance Decomposition test shows that money growth variable has a dominant impact than exchange rate variable for the next twenty quarters (5 years).
Keyword: Bogor Agricultural University (IPB), vector error correction model., variance decomposition, inflation, impulse response function, effect

Judul: Analisis Mekanisme Transmisi Kebijakan Moneter Jalur Suku Bunga terhadap Inflasi dan Pertumbuhan Ekonomi di Indonesia.
Abstrak: Jalur suku bunga merupakan salah satu transmisi kebijakan moneter yang dapat dilakukan untuk mencapai dan memelihara kestabilan nilai rupiah di Indonesia. Penelitian ini bertujuan untuk menganalisis mekanisme transmisi kebijakan moneter jalur suku bunga di Indonesia dengan menggunakan Vector Error Corrrection Model (VECM). Data yang digunakan dalam penelitian merupakan data bulanan dari Januari 2010 hingga Februari 2018. Berdasarkan analisis Impulse Response Function (IRF), guncangan tingkat suku bunga direspon negatif oleh pertumbuhan ekonomi dan direspon positif oleh inflasi. Hasil Forecast Error Variance Decomposition (FEVD) menunjukkan bahwa tingkat suku bunga memberikan kontribusi yang tidak terlalu besar terhadap inflasi dan pertumbuhan ekonomi.
Keyword: kebijakan moneter, suku bunga, VECM

Judul: Synthesis of Apatite - Chitosan Composite Using Duck Eggshell and Chitosan with Temperature and pH Control
Abstrak: Composite of apatite-chitosan was prepared by using chitosan as polymer matrix. Calcium phosphate was prepared from CaO and (NH4)2HPO4, which the ratio Ca : P had to be 1.67. Chitosan is produced by deacetilase from biopolymer chitin. Duck eggshell (95% CaCO3) as starting material was converted to be calcium oxide (CaO) through calcinations with temperature 1000oC for 5 hours. In-situ and ex-situ methods were prepared from apatite and chitosan (dissolved with acetate acid 2%). Calcium phosphate prepared for bone implantation, but it is too fragile and brittle to be implant into the body. So addition of chitosan can decrease crystalinity and increase mechanic characteristic (tougher). Composite apatite-chitosan was resulted by fast precipitation. Fast precipitation was held in a breaker glass with nitrogen atmosphere, under controlled temperature at 37oC and pH 7, in order to increase amount of hydroxyapatite. Precipitation with CaO which was dropped by (NH4)2HPO4. Hydroxyapatite and chitosan were appearing at samples with in-situ and ex-situ methods which indicating by peak matching of XRD (closed lattice parameter, crystal size), overlapping at FTIR spectra and supporting by SEM picture (homogenous and agglomerated particle). However, it still needs further research to examine biocompatibility osteoconductive degree of sample by in-vivo and in-vitro test.
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