Judul: Technical  analysis  to  determine  forex  online  open  and close  position  eur/usd  currency  pair  for  2010-2013  period  of  time
Abstrak: Dalam dunia investasi khususnya investasi keuangan sangat beragam jenisnya, namun investasi forex online adalah yang terbaik dalam hal modal. Forex Online memberikan banyak kebingungan kepada para trader dalam membuka posisi dan menutup posisi trading yang tepat karena harga bergerak hampir tidak beraturan. Penelitian ini dilakukan untuk menganalisis sinyal buka posisi dan tutup posisi pasangan mata uang EUR/USD tersebut dengan menggunakan analisis teknikal. Hasil penelitian didapatkan bahwa untuk computerized chart Analysis memiliki 5 buka posisi menghasilkan pip total sebanyak 4785.8 pip. Untuk classical chart Analysis, pola candlesitck memiliki 8 buka posisi menghasilkan pip total sebanyak 8114,3 pip dan pola grafik memiliki 6 buka posisi menghasilkan pip total 5557,1 pip. Kata kunci: Analisis teknikal, computerized chart Analysis, pola candlestick, pola grafik, pasangan mata uang EUR/USD., In the world of investment especially monetary investment have many variety, but forex online investment its the best for capital. Forex online give so many confuse to traders in which way that traders open and close position because price moved almost uncertain. This study was conducted to analyze open and close position signal for EUR/USD currency pair with technical Analysis. The results showed that computerized chart Analysis have 5 open position that produce 4785,8 pips total. For classical chart Analysis, candlestick pattern have 8 open position produce 8114,3 pips total and graph pattern have 6 open position produce 5557,1 pips total.
Keyword: Analisis teknikal, computerized  chart  Analysis, pola  candlestick, pola  grafik, pasangan mata uang EUR/USD

Judul: Prediksi Perubahan Nilai Tukar Mata Uang Rupiah Terhadap Dolar Menggunakan Model Osilator Anharmonik Kuantum
Abstrak: Perubahan nilai tukar mata uang yang berfluktuasi dapat menjadi peluang investasi yang menguntungkan, bergantung pada kemampuan kita memprediksi pergerakannya. Dalam penelitian ini kami menggunakan pemodelan osilator anharmonik kuantum dilengkapi dengan metode beda hingga untuk memprediksi parameter ekonomi pada pasar valuta asing. Parameter-parameter tersebut antara lain, kemampuan market makers mengendalikan pasar ( ), perilaku contrarians dan trend followers terhadap pasar ( ), risk aversion effect ( ), dan nilai kekuatan pasar ( ). Hasil yang diperoleh menunjukkan perbandingan antara nilai price return hasil simulasi dan data aktual yang cukup baik yaitu dengan nilai koefisien determinasi ( ) diatas 0.80. Penggunaan metode exponential smoothing untuk memprediksi price return berdasarkan nilai parameter dari simulasi osilator anharmonik kuantum juga menghasilkan nilai koefisien determinasi ( ) yang cukup baik yaitu 0.73.
Keyword: Exponential smoothing, Finite Diffference, Osilator Anharmonik Kuantum, Pasar Valuta Asing, Price Return

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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