Judul: Optimization of Technical Indicators Based on Genetic Algorithm in Stock Exchange.
Abstrak: Stock trading is become popular in Indonesia. The generation of profitable trading rules for stock exchange investments is a difficult but popular problem. The use of Machine Learning in this problem is to obtain objective results by using information in the past market behavior. In this research, genetic algorithm is used to automatically generate trading rules based on Technical Indicators. The method in this research used Hirabayashi (2009) model and also modification model of Hirabayashi by adding 2 additional technical indicators. The results shows that Hirabayashi Model and Modification Model generate better profit result compare with buy and hold strategy in small capitalization stock or big capitalization stocks in Indonesian Stock Exchange. By using Genetic Algorithm, some of the technical indicators could be ignored. It’s also found that modification model could adapt the price trend better than Hirabayashi Model.
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Judul: Pembentukan Portofolio Reksadana Saham yang Optimal Menggunakan Algoritma Genetika Multi Objektif
Abstrak: Investments in financial assets has become a trend in the era of globalization, especially the investment in mutual fund shares. Investors who want to invest in stock mutual funds can set up an investment portfolio in order to generate an maximal return and minimimal risk. In this study the author used the Multi-Objective Genetic Algorithm Non-Dominated Sorting II (MOGA NSGA-II) technique with the Markowitz portfolio principle to find the best portfolio from several mutual funds. The data used are 10 company stock mutual funds with a period of 12 months, 24 months and 36 months. The genetic algorithm parameter used are probability crossover of 0.65, probability mutation of 0.05, Generation 400 and a population numbering 20 individuals. The study produced a combination of the best portfolios in the period of 24 months with a computing time of 63.289 seconds.
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Judul: Prevalensi Uretrostomi Perineum pada Kucing FLUTD di Papar, Sabah
Abstrak: Feline lower urinary tract disease (FLUTD) is a common disease that classified as an emergency case and need a quick treatment. This condition is usually effecting the urethra and bladder of the patients. This study aims to know the prevalence of perineal urethrostomy (PU) surgery in feline lower urinary tract disease (FLUTD) cats in SunRiz Animal Clinic, Papar, Sabah. Perineal urethrostomy (PU) is one of the surgical method that can be taken to treat urethral obstruction (UO) in cat. This surgery will remove the narrow part of the urethra and make a permanent urethral opening in the perineal region and help to decrease urethral obstruction (UO) in cats with complicated or recurrent obstructive feline lower urinary tract disease (FLUTD). This study was using 7 male cats and few reasons of doing PU were collected. 42.86% of the cats were going through a 3rd episode of FLUTD, while 71.43% of the cats were going through 2 catheterizations and having urinary tract infection (UTI) and kidney problem. The prevalence is depends on the blood and urine test results and the number of catheterization., Penyakit saluran kemih bawah pada kucing (FLUTD) adalah penyakit umum yang biasanya menyerang uretra dan kantong kemih dan membutuhkan perawatan segera. Penelitian ini bertujuan untuk mengetahui prevalensi operasi perineal urethrostomy (PU) pada kucing yang menderita FLUTD di Klinik Hewan SunRiz, Papar, Sabah. Uretrostomi perineum merupakan salah satu metode pembedahan yang dapat dilakukan untuk mengatasi obstruksi uretra pada kucing dengan cara mengangkat bagian sempit uretra dan membuat bukaan uretra permanen di daerah perineum. Penelitian ini menggunakan data sekunder yang diperoleh dari data operasi PU pada kasus FLUTD yang ditangani di Klinik Hewan SunRiz Papar, Sabah pada periode Juni 2020 sampai Februari 2021. Data dari 7 ekor kucing jantan dengan riwayat FLUTD dan obstruksi uretrostomi (UO) kambuhan yang diberikan operasi PU, digunakan. Data diperoleh dari rekam medis kesehatan pasien, tes hitung darah lengkap (CBC) dan tes urinalisis pasien. Semua data dianalisis secara deskriptif. 42,86% kucing mengalami FLUTD episode ketiga, yang mana telah mengalami kasus FLUTD kali ketiga. 71,43% kucing menjalani 2 kali kateterisasi dan mengalami infeksi saluran kemih (ISK) dan masalah ginjal. Prevalensinya tergantung dari hasil tes darah dan urin serta jumlah kateterisasi.
Keyword: FLUTD, perineal urethrostomy, urethral obstruction, recurrence, male cat