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"This research investigates earth structure beneath the Southwest North America landmass,especially between Mexico and California...."

"ABSTRAKPermintaan bahan bakar petroleum terus meningkat setiap tahun tetapi cadangan mintak bumi sudah hampir habis. Sehingga dibutuhkan sumber energy alternative yg lebih dapat diandalkan untuk mengatasi krisis energi. Percobaan ini mempelajari Analytikal Semi Empirikal Model (ASEM) dalam merepresentasikan berbagai macam hasil produk hasil pirolisis dari minyak nabati. Percobann ini bertujuan untuk menemukan kondisi temperature optimum untuk setiap produk melalui simulasi. Percobaan ini menggunakan data sekondari dari minyak nabati yang kemudian disimulasikan dengan simulator dengan metode curve fitting.

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ABSTRACTThe demand of petroleum fuel keep increasing every year but the fossil fuel reserve is almost depleted. That is why there is a need to find another reliable alternative energy source to solve the energy crisis.This research studies predictive Analytical Semi Empirical Model (ASEM) in representing various vegetable oil pyrolysis products. This research aims to find optimum temperature condition for each products through simulation. This Experiment use secondary data of vegetable oils are simulated using simulator with curve fitting method"

"The seismogram of a deep earthquake,C050296F,has been analyzed at various stations around the quake's epicenter,that are HNR,MSVF,CTAO and SNZO,to investigate the S speed structure below the Ontong -Jawa Plateau (OJP) in Pacific west Equator....."

"ABSTRAKPenelitian ini membahas mengenai metode perhitungan downwash dari hasil data terowongan angin pada pesawat N-219. Salah satu karakteristik aliran yang mempengaruhi kualitas kestabilan dan pengendalian pesawat adalah fenomena downwash. Dalam pengujian terowongan angin harga momen tukik pesawat tanpa ekor dan dengan ekor horizontal dibandingkan untuk mendapatkan harga downwash yang efektif mempengaruhi ekor dan kestabilan statik longitudinal pesawat itu sendiri. Cara mendapatkan nilai-nilai downwash yang efektif sendiri adalah dengan menurunkan data terowongan angin menggunakan perhitungan matematis polynomial curve fitting. Penggunaan metode ini nantinya akan menghasilkan satu nilai karakteristik downwash dari beberapa nilai karakteristik downwash yang dihasilkan dari perhitungan dengan menggunakan rumus standar yang dipakai oleh PTDI. Setelah itu akan dilakukan perhitungan balik untuk membandingkan apakah hasil perhitungan dengan metode polynomial curve fitting sesuai dengan hasil perhitungan dengan menggunakan rumus standar yang dipakai di PTDI, dan membandingkan pula dengan data awal terowongan angin. Nilai-nilai yang didapat dalam perhitungan downwash antara lain α , , , , ε, , . Perbandingan hasil perhitungan dengan menggunakan metode polynomial curve fitting dengan data awal terowongan angin menunjukkan bahwa nilai-nilai yang dihasilkan menunjukkan tren yang serupa, sehingga dapat dikatakan metode perhitungan yang dilakukan adalah benar adanya.

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ABSTRACTThis research discusses the calculation method downwash of wind tunnel data results on the N-219 aircraft. One flow characteristics that affect the quality of the stability and control of aircraft is a downwash phenomenon. In wind tunnel testing pitching moments without and with horizontal tails compared to getting an effective downwash characteristics that affect tail and static longitudinal stability of the aircraft itself. How to get the values ​​of downwash characteristics is calculate the wind tunnel the data using mathematical calculations polynomial curve fitting. Using this method will produce a characteristic value of some value of downwash downwash characteristics resulting from the calculation by using a standard formula used by PTDI. After that, it will be calculated back to compare whether the results of the calculation method of polynomial curve fitting according to calculations using the standard formula used in PTDI, and compares it with wind tunnel testing data. The values ​​obtained in the calculation of downwash include α , , , , ε, , . Comparison of the results of calculations using polynomial curve fitting with initial data of the wind tunnel showed that the resulting values ​​showed a similar trend, so we can say the method of calculation made is true.;"

"Krisis keuangan global yang disebabkan oleh Sub Prime Mortgage di Amerika telah menyebabkan harga - harga saham di dunia berjatuhan ,IHSG dan saham - saham di Indonesia juga ikut terpengaruh sehingga nilainya telah terus merosot jatuh. Pergerakan nilai IHSG dan saham ini akan dimodelkan dalam bentuk ARIMA. ARIMA sebenarnya adalah teknik untuk mencari pola yang paling cocok dari sekelompok data (curve fitting), dengan demikian ARIMA memanfaatkan sepenuhnya data masa lalu dan sekarang untuk melakukan peramalan jangka pendek yang akurat. Contoh pemakaian model ARIMA adalah peramalan harga saham dipasar modal yang dilakukan para pialang yang didasarkan pada pola perubahan harga saham dimasa lampau.

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The Global financial crisis caused by sub prime mortgage in America has caused world stock market price declining, IHSG and Indonesian stock market also declining too cause of the global financial crisis. The movement price of IHSG and stock market will ne modeled in ARIMA. ARIMA is actually a technik for search suitable pattern from curve fitting, so ARIMA using wholefully past and present data to forecast short term period very accurate. An example of using ARIMA model is forecasting stock price in capital market by broker based of the stock price change in past."

"In this research the S speed structure is investigated by seismogram analysis of Washington's earthquake, C022801L using data of TUC station, Tucson, Arizona, U.S.A. The seismogram comparison between the observed and the synthetic seismogram is conducted in time domain and three components simultaneously. The initially input for the calculation of synthetic seismogram is earth model of PREMAN and CMT solution from the earthquake. A low-pass Butterworth filter with corner frequency of 20 mHz is convolved to observed and synthetic seismogram. Waveform comparison shows a real deviation when travel time and waveform of some wave phase are compared, namely on S wave, surface wave of Love and Rayleigh and wave ScS and ScS-2. This research shows, how sensitive the waveform is to the earth model, better than the method of travel time or the dispersion analysis. Research hereinafter is addressed to finish the found discrepancies at S wave, surface wave of Love and Rayleigh and ScS and ScS-2 wave, in observation station TUC. To obtain the seismogram fitting, correction for S speed structure in earth model is needed, that are changes of earth crust thickness, the speed model of  in upper mantle covering the speed gradient of h and value of zeroeth order coefficient for the h and v, for accomplishing the discrepancies at surface wave of Love and Rayleigh. Further correction on S speed is conducted to accomplish the deviation at S wave at earth layering systems from Upper Mantle up to a 630 km depth. Mean while for the ScS and ScS-2 wave phase the correction is carried out on S speed in the earth layers up to CMB. Fitting Seismogram is obtained at waveform of various wave phases that is S wave, surface wave of Love and Rayleigh and ScS, ScS-2 wave, either on travel time or especially also at oscillation number in Love wave. This result indicates that the anisotropy is occurred not only in upper mantle but till deeper earth layers, till CMB."

"The S wave velocity structure at subduction zone under Sumatra-Java was investigated through seismogram analysis in time domain and three Cartesian's components simultaneously....."