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"Numerical continuation methods have provided important contributions toward the numerical solution of nonlinear systems of equations for many years. The methods may be used not only to compute solutions, which might otherwise be hard to obtain, but also to gain insight into qualitative properties of the solutions. Introduction to Numerical Continuation Methods, originally published in 1979, was the first book to provide easy access to the numerical aspects of predictor corrector continuation and piecewise linear continuation methods. Not only do these seemingly distinct methods share many common features and general principles, they can be numerically implemented in similar ways. Introduction to Numerical Continuation Methods also features the piecewise linear approximation of implicitly defined surfaces, the algorithms of which are frequently used in computer graphics, mesh generation, and the evaluation of surface integrals. To help potential users of numerical continuation methods create programs adapted to their particular needs, this book presents pseudo-codes and Fortran codes as illustrations. Since it first appeared, many specialized packages for treating such varied problems as bifurcation, polynomial systems, eigenvalues, economic equilibria, optimization, and the approximation of manifolds have been written. The original extensive bibliography has been updated in the SIAM Classics edition to include more recent references and several URLs so users can look for codes to suit their needs or write their own based on the models included in the book."

"Regulasi price limit seharusnya dapat mengurangi gejala volatilitas harga saham yang berlebihan ketika market dalam keadaan crash. Mengacu pada penelitian Kim (1997) dan Huang (2001) penelitian ini dimaksudkan untuk melihat efektifitas regulasi price limit yang diterapkan di Bursa Efek Indonesia selama periode 2007-2008. Jika memang price limit terbukti mengurangi volatilitas maka overreaction hypothesis yang dikemukakan oleh Huang (2001) akan terbukti. Tetapi jika tidak, penelitian ini kemudian dikembangkan mengacu pada penelitian Kim (1997) untuk menguji ketiga hipotesis masalah baru yang muncul akibat adanya regulasi price limit. Ketiga hipotesis tersebut adalah volatility spillover hypothesis, delayed price discovery hypothesis, dan trading interference hypothesis.

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Daily price limits should reduce volatility of the stock price where market had crashed. Refers to research conducted by Kim (1997) and Huang (2001), this research is intended to see the effectiveness of price limits on the Indonesia Stock Exchange during the 2007-2008 period. If price limit is effective to reduce the volatility of the stock prices, then overreaction hypothesis stated by Huang (2001) will be proved. But if not, this research will be extended based on Kim?s (1997) to test the three new hypotheses of new issues that arise due to price limits. The three hypotheses are volatility spillover hypothesis, delayed price discovery hypothesis, dan trading interference hypothesis."

"Dalam tahapan ekplorasi emas, diperlukan suatu metode yang dapat mendeteksi keberadaan suatu endapan urat – urat kuarsa (vein kuarsa), dimana urat – urat tersebut berasosiasi dengan zona patahan dan zona alterasi. Metode Magnetik adalah salah satu metode Geofisika yang dapat merespon keberadaan suatu zona patahan dan zona alterasi di bawah permukaan, sehingga metode magnetik ini digunakan untuk menduga adanya suatu keberadaan urat – urat kuarsa. Dari hasil data pengukuran dilakukan KOREKSI DIURNAL dan KOREKSI IGRF, kemudian dilakukan UP WARD CONTINUATION untuk men – smoothkan grafik lintasan pengukuran, dan ketika pemodelan menggunakan metode FORWARD MODELLING untuk memperoleh gambaran awal mengenai geometri benda anomali bawah permukaan. Dari hasil pemodelan diketahui yaitu bahwa terdapat 3 lintasan yang diperkirakan berprospek untuk dilakukan pengeboran. Rekomendasi pengeborannya yaitu Lintasan GKD 1 diduga terdapat jalur vein sekitar titik -75 sampai -70 untuk itu rekomendasi titik pengeboran disekitar titik -5 dan 0 dengan kemiringan 450 arah horizontal, Lintasan GKD 2 diduga terdapat jalur vein sekitar titik -75 sampai -50 untuk itu rekomendasi titik pengeboran disekitar antara titik -6 dan -5 serta antara -3 dan -2 dengan kemiringan 450 arah horizontal, Lintasan GKD 3 diduga terdapat 3 jalur vein sekitar titik -100 sampai -75, lalu sekitar titik 0 sampai 50 dan sekitar titik 200 sampai 225, untuk itu rekomendasi titik pengeboran titik bor ditempatkan diantara titik -6 & -3, kemudian titik bor ditempatan diantaranya titik -1 & 4 dan titik bor ditempatkan diantara titik 7 & 12 dengan kemiringan 450 arah horizontal.

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In Gold eksploration, need a method where it can be detect the vein of quarz, where that vein is associated with fault and alteration zone. Magnetic method are one of geophysics method where it can give response about the fault and alteration zone in under surface, so this magnetic method are use to know the vein of quarz. From the aqusition data doing the DIURNAL CORRECTION and IGRF CORRECTION, than doing UP WARD CONTINATION to smoothing the profile of magnetic, and than at modelling is use the FORWARD MODELLING to estimate the geometry of anomali in under surface. From the modelling known that from 6 line is just have 3 line prospect to do eksploration. The recomand to drilling is at line GKD 1 have a vein where the location is about point -75 until -70 and for drilling are about point -5 and 0, The recomand to drilling is at line GKD 2 have a vein where the location is about point -75 until -50 and for drilling are about point -6 and -5 and than about point -3 and -2, The recomand to drilling is at line GKD 3 have a vein where the location is about point -100 until -75, 0 and 5, 200 and 225, and for drilling are about point -6 and -3 and than about point -1 and 4, and last is about 7 and 12."

"The role of contraceptive use dynamics in shaping the contraceptiveprevalence structure and ht determining its impact on fertility becomesincreasingly important for family planning program, policy mailers andprogram managers. Relatively few analyses of contraceptive use dynamicsexist for developing countries. The lack of _ such studies is that the datarequired are not often collected. This article is intended to _,fill in the gaps byanalyzing the five-year calendar data derived from the I994 IndonesiaDemographic and Health Survey (1994 DHS). The five year calendar data oncontraceptive use, pregnancy, termination and reason for discontinuation ofcontraceptive use analyzed using the life table methodologies providemeaningful insight on the quality of contraceptive use in Indonesia. It is foundthat the median duration of use is longest for the IUD and implant, whileshortest lor condom/intravag. About 27 percent of all Indonesia contraceptiveusers discontinue the use of their chosen method within a year. The reasonsfor discontinuation vary across subgroups of women. Method failure isassociated more with discontinuation of traditional method, while method-related reasons such as health concern or inconvenience of use are morelikely to be associated with discontinuation of modern method mainly lUDs,injectables and implants. There are more important factors that differentiatewomen on discontinuation qt' contraception e.g., area of residence, regioneducation, age, and contraceptive intent. These findings on discontinuationenabled the family planning program to provide more realistic and focusedservices to their clients. In conclusion, this analysis emphasizes theimportance of examining the quality of contraceptive use in Indonesia toachieve greater appreciation of the factors that affect contraceptivediscontinuation, switching behavior, and use:;i:i'lure. Special attention shouldhe addressed to health concerns as an important issue for the most popularmodern methods and to the minority of women who discontinue use within ayear and do not switch to another method."

"Program Keluarga Berencana selama ini telah berkontribusi dalam penurunan fenilitas di Indonesia dan semakin lama prevalensinya semakin meningkat. Peningkatan prevalcnsi pemakaian kontrasepsi yang diikuti oleh penunman angka fertilitas mengindikasikan bahwa di antara dua indikator tersebut memiliki hubungan yang sangat erat. Pencapaian TFR di Indonesia berdasarkan SDKI 2007 ternyata lebih rendah dari yang diharapkan jika. merujuk pada pencapaian CPR-nya. Kondisi ini membawa Indonesia mengalami deiisit fertilitas, yaitu suatu kondisi pencapaian angka fertilitas yang lebih rendah daripada angka fertilitas yang diharapkan. Terjadinya defisit ini diduga karena pemakaian kontrasepsi yang makin efektif dan berlangsung lame, sehingga dugaan tersebut perlu diteliti lebih lanjut. Melalui studi ini, ingin dipelajari pengaruh efektivitas pemakaian kontrasepsi dalam penurunan fertilitas dan kelangsungan pemakaian kontrasepsi berdasarkan karakteristik tingkat pendidikan, aktivitas pekerjaan, daerah tempat tinggal, tingkat kekayaan, mnur, tingkat PDRB, dan rasio fasilitas kesehatan per pasangan usia subur. Dengan mengglmakan regresi multinomial logistik dan regresi Cox, ingin dilihat kcoenderungan pemakaian alat/metodc kontrasepsi dan detenninan kelangsungan pemakaian kontrasepsi. Metode kontrasepsi jangka panjang (MKJP) ternyata masih merupakan metode yang lebih efelctif dibandingkau dengan metode lainnya. Efektivitas yang terjadi ternyata lebih efektif dari yang diduga dan sangat berkontribusi atas texjadinya deiisit fertilitas di Indonesia. Adapun karakteristik yang memiliki kecenderungan untuk menggunakan MKJP ialah mereka yang berpendidikan menengah kc atas, bekezja, tinggal di perkotaan, tingkat kekayaannya linggi, berumur 35 tahun ke atas, daerahnya kurang maju, dan rasio fasilitas kesehaian per PUS-nya makin tinggi. Karakteristik yang lebih cepat mcngalami diskontinu adalah wanita yang menggunakan non MKJP atau metode tradisional, berpendidikan menengah ke atas, tidak bekelja, tinggal di perkotaan, tingkat kekayaannya tinggi, berumur kurang dari 35 tahun, daerahnya kurang maju, dan rasio fasilitas kesehatan per PUS-nya makin tinggi.

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Family Plarming Program has been contributed to decreasing number of fertility in Indonesia. Increasing prevalence of contraceptive use which was followed by decreasing number of fertility rate indicated strong association between the two indicators. It was reported in IDHS 2007 that TFR in Indonesia was lower than expected seeing 'fiom achieved contraceptive use. This condition brought deficit of fertility in Indonesia. Later, it was guess that deficit of fertility was caused by e&`e ctiveness and longer duration of contraceptive use.

The objective of this research was to investigate the influence of effectiveness of contraceptive use toward fertility and to investigate influences of factors such as level of education, working status, place of residence, wealth status, age, GDP and ratio of health care facility and couple of child bearing age toward continuation of contraceptive use. Multinomial logistic and Cox Regression were used to examine the association.

Result of the analysis showed that long term contraceptive method was the most etfective method. The eiectiveness measured was more effective than it was expected and gave much contribution toward deiicit of fertility in Indonesia. The used of long term contraceptive method were high among those couples who were 35-49 years of ae, at least middle level of education, worked, lived in urban area, high socio economic status, lived in developing area, higher ratio of health care facilities and couple of child bearing age. Prevalence of discontinuation were high among those who were used traditional method and non long term method, at least middle level of education, not worked, lived in urban area, high socio economic status, 15-34 years of age, lived in developing area, high ratio of health care facility and couple of child bearing age."

"ABSTRAKRegulasi price limit seharusnya dapat mengurangi gejala volatilitas harga saham yang berlebihan ketika market dalam keadaan tidak baik. Penelitian ini dimaksudkan untuk menganalisis pengaruh price limit terhadap pergerakan harga saham pada satu hari perdagangan yang pada hari itu harga saham bergerak sempat menyentuh batas maksimal atau batas minimal transaksi harian. Penilitian ini menggunakan data seluruh saham yang ada di Bursa Efek Indonesia selama periode 2008 ndash; 2015 dan menggunakan metode Overreaction Hypothesis yang dikemukakan Huang 2001 . Hasil dari penelitian ini menunjukan bahwa regulasi price limit di Bursa Efek Indonesia belum efektif mengurangi volatilitas yang terlihat dari tidak adanya gejala overreaction.

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ABSTRACT

Price limits regulation should reduce the symptoms of excessive stock price volatility when market in bad condition. This research is to analyze the effect of price limit on stock price movements on the day of trading that the price had touched the maximum or minimum daily limit transactions. This research used data of all existing shares in the Indonesian Stock Exchange during the period 2008 2015 and use the Overreaction Hypothesis method that proposed by Huang 2001 . The results of this study indicate that the limit price regulation in the Indonesian Stock Exchange has not been effective in reducing the volatility seen from the absence of overreaction symptoms."

"Dalam melakukan interpretasi struktur bawah permukaan menggunakan data gravitasi, perlu dilakukan pemisahan anomali residual dan regional. Metode yang umum digunakan untuk melakukan pemisahan antara lain yaitu metode analisis spektrum, trend surface analysis (TSA), dan upward continuation. Dalam tulisan ini digunakan ketiga metode tersebut untuk memisahkan anomali regional dan residual. Penelitian dilakukan menggunakan data gravitasi daerah “X” dengan objek penelitian berupa patahan. Data gravitasi yang diperoleh diolah hingga mendapatkan data CBA (Complete Bouguer Anomaly), lalu dilakukan proses separasi. Dari data-data tersebut kemudian dilakukan inversi dan forward modeling 2D. Analisis dilakukan untuk melihat perbedaan hasil pemodelan anomali gravitasi tanpa dilakukan separasi (CBA) dibandingkan dengan pemodelan anomali residual hasil separasi. Hasil analisisnya memperlihatkan bahwa dari data CBA dan anomali residual metode analisis spektrum tidak dapat mendeteksi adanya patahan. Sedangkan dari data anomali residual metode TSA dan upward continuation sudah mampu mendeteksi adanya patahan.

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In interpreting subsurface structures using gravity data, it is necessary to separate residual and regional anomalies. The methods commonly used to perform separation include spectrum analysis, trend surface analysis (TSA), and upward continuation. In this paper, these three methods are used to separate regional and residual anomalies. The study was conducted using gravity data for area “X” focusing on fault structures as the object of interest. The obtained gravity data is processed to obtain CBA (Complete Bouguer Anomaly) data, then the separation process is carried out. From these data, 2D inversion and forward modeling are then performed. The analysis was carried out to see the differences in the results of the modeling of the gravity anomaly without separation (CBA) compared to the modeling of the residual anomaly resulting from the separation. The results of the analysis show that from CBA and residual anomaly using spectrum analysis method, were not able to detect the faults. Meanwhile, the faults can be detected in residual anomaly from TSA and upward continuation methods."

"This paper is housed on contraceptive switching in indonesia. Since a woman might use more than one method of contraception during her reproductive period she can contribute more than one contraceptive use interval to the data. Some studies of contraceptive switching have used statistical techniques which assume independence between switching but this assumption can be violated because the likelihood of switching might be correlated. Hence contraceptive switching varies not only across groups of contraceptive users but also across contraceptive users with the same socioeconomic characteristics. Hence the consequences of this contraceptive users' eject for the relationship between socioeconomic. demographic and contraceptive-related characteristics of users and contraceptive switching in indonesia is analysed through the use of random-ejects logistic models. The data used for the analysis is from the 1991 Indonesia Demographic and Health Survey. The findings confirm the results of previous studies that a number of socioeconomic and demographic factors influence the likelihood of switching contraception. Among these factors. contraceptive-related /actors such as the method being used before switching, the duration of use at switching and the reason for switching, affect contraceptive switching most. The results also indicate that there is correlation between intervals for the same woman. This implies that there are other factors which have not been observed and contribute to the differentials of switching contraception across women with the saute socioeconomic characteristics."

"Anomali Bouguer dalam survey gravitasi merupakan jumlah medan gravitasi yang dihasilkan oleh semua sumber anomali bawah permukaan, yaitu anomali regional dan residual. Anomali regional berasosiasi dengan frekuensi rendah dan anomali residual diidentifikasi dengan frekuensi tinggi yang mengandung informasi mengenai sumber anomali dangkal. Target dalan eksplorasi geofisika pada umumnya struktur-struktur kecil pada kedalaman yang dangkal. Hal inilah menyebabkan pemisahan anomali regional dan residual sangat penting dalam interpretasi data gravitasi. Pemisahan anomali dilakukan dengan variasi metode, yaitu, polynomial trend surface analysis, upward continuation dan lowpass frequency filter. Metode-metode tersebut di aplikasikan menggunakan model sintetik yakni model Syn dan model Intrusi. Hasil dari ketiga metode untuk memisahkan komponen regional dan residual kemudian ditampikan dan dibandingkan. Dari hasil penelitian, diperoleh bahwa anomali regional dan residual yang diasilkan oleh metode polynomial trend surface analysis mempunyai error yang paling minimum diantara kedua metode lain yang digunakan. Rms error anomali regional berturut-turut untuk metode polynomial trend surface analysis, upward continuation and lowpass filter dari model Syn adalah 0,706 mgal, 0,785 mgal, 0,766 mgal and dari model Intrusi yakni 0,410 mgal, 0,451 mgal, 0,540 mgal.

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Bouguer anomaly in gravity surveys are the sum of gravity fields produced by all underground sources, from residual and regional anomaly. Regional anomaly is identified by low frequency and residual anomaly is identified by high frequency that contains information of shallow sources. The targets for geophysical surveys are often small scale structure buried at shallow depths. That's why regionalresidual field separation is essential in gravity data interpretation. A variety of separation techniques have been proposed, namely, polynomial trend surface analysis, upward continuation and lowpass frequency filter. The proposed methods were tested using variation of synthetic models, that are, Syn and Intrusion 3D models.

Results from three methods to separate residual and regional component are presented, compared and evaluated. The results show regional and residual anomaly produced by polynomial trend surface analysis have minimal error than two other methods. The rms errors of regional anomaly of Syn model are 0.706 mgal, 0.785 mgal, 0.766 mgal and rms errors of regional anomaly of Intrusion model are 0.410 mgal, 0.451 mgal, 0.540 mgal for polynomial trend surface analysis, upward continuation and lowpass filter, respectively."