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PERANCANGAN DAN IMPLEMENTASI PERANGKAT LUNAK SISTEM PENCOCOKAN SIDIK JARI DENGAN ALGORITMA FILTERBANK GABOR Widodo, Aris Puji; Adi, Kusworo
MATEMATIKA Vol 9, No 3 (2006): JURNAL MATEMATIKA
Publisher : MATEMATIKA

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Abstract

From research result used filterbank gabor algorithms, can give 96 (24 x 4) featurres from 24 sector with 4 filter. Gabor filter use 23 x 23 with orientation change 00, 450, 900, dan 1350. Each orientation angle change will be rotation gabor filter on to its. Make feature vector or FingerCode with Avarage Absolute Deviation (AAD) are average value from difference pixels number for each sector and centre value on sector. Error system on disjoint between FAR dan FRR with value 3,6% and threshold value 39. Then slope from GAR graphic value 400, this is proving that this system is running a good, cause slope recommendation value 450.
Evaluasi Aplikasi Pengembangan Karir dan Kewirausahaan pada Aplikasi Perkasa Universitas Mulawarman Menggunakan Framework COBIT 5 Muhammad Rivani Ibrahim; Linda Nuryanti; Kusworo Adi; Aris Puji Widodo
Informatika Mulawarman : Jurnal Ilmiah Ilmu Komputer Vol 15, No 2 (2020): Informatika Mulawarman : Jurnal Ilmiah Ilmu Komputer
Publisher : Mulawarman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jim.v15i2.4887

Abstract

Universitas Mulawarman memiliki sistem informasi pelatihan dan pekerjaan dalam mengembangkan karir dan kewirausahaan untuk lulusan alumninya yang dikembangkan oleh Unit Pelaksana Tugas (UPT) Pengembangan Karir dan Kewirausahaan (PERKASA). Aplikasi PERKASA mampu menyediakan berbagai informasi yang bermanfaat bagi alumni, dengan memetakan pasar kerja calon alumni, merencanakan pengembangan kurikulum dan mengadakan pelatihan agar dapat memetakan pasar kerja secara dinamis. Namun, hingga saat ini belum ada evaluasi dan monitoring yang dilakukan pada aplikasi PERKASA untuk mengetahui masalah serta tingkat pelayanannya. Berdasarkan permasalahan ini, maka pada artikel ini akan dilakukan evaluasi aplikasi menggunakan COBIT5 untuk mengetahui apakah sistem yang digunakan sekarang sudah berjalan baik dan dapat mencapai target yang telah ditentukan. Evaluasi aplikasi PERKASA menggunakan domain Monitor Evaluate and Assess (MEA01) dan Deliver, Service and Support (DSS01) dengan proses pengumpulan data menggunakan kuesioner. MEA01 Monitor, evaluate and assess performance and conformance berfokus pada mengumpulkan, memvalidasi, serta mengevaluasi tujuan proses dan standar kegiatan, sedangkan DSS01 Manage Operation berfokus pada merumuskan langkah perbaikan yang dapat dilakukan untuk meningkatkan kapabilitas proses. Hasil dari penelitian ini adalah nilai capability level, nilai gap dan rekomendasi strategi perbaikan. Berdasarkan hasil pengumpulan data yang telah dilakukan, didapatkan nilai capability level saat ini berada pada level 4 (Predictable Process). Hasil analisis gap pada MEA01 menunjukkan kondisi saat ini sebesar 3,65 dengan target 3,89 dan kondisi sekarang DSS01 sebesar 3,78 dengan target 3,99. Berdasarkan hasil analisis gap pada masing-masing sub domain, maka perlu adanya perbaikan dan usulan rekomendasi dalam mencapai target dalam mendukung tujuan organisasi.
PEMBUATAN SISTEM KENDALI POSISI AUTOFOKUS EKSPERIMEN LENSA DENGAN MOTOR LANGKAH Gunadi, Isnain; Gernowo, Rahmat; Adi, Kusworo
BERKALA FISIKA 2015: Berkala Fisika Vol. 18 No. 4 Tahun 2015
Publisher : BERKALA FISIKA

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Abstract

The automatic lens experiment with stepper motor position control has been made. Main component of this device are stepper motor which move the lens and screen. Microcontroller is contens the programs of motor movement controller. The screen contain of Light Dependent Resistor (LDR) as voltage sensor. This image will focused when the voltage in the screen is maximum. The result of test show that the automatic measurement is more accurate than manual measurement.Keywords: Auto-Fokus, LDR, IPMC, LSW, EAPs, VCM
IDENTIFIKASI FOKUS MIKROSKOP DIGITAL MENGGUNAKAN METODE OTSU Putranto, Ari Bawono; Adi, Kusworo; Gernowo, Rahmat
BERKALA FISIKA 2014: Berkala Fisika Vol. 17 No. 4 Tahun 2014
Publisher : BERKALA FISIKA

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Abstract

A study to identify focus on a digital microscope has been done using a threshold value of the object microscope image obtained by Otsu method. Microscope image of the object captured by the change from a maximum to a minimum distance between the object and the microscope objective lens to record the amount of movement of a motor stepper and calculates the Otsu threshold value on each image. Based on data from a Otsu threshold value of each microscope image of the object to the changes within the object can be inferred the existence of a relationship between the position of an object to focus the microscope with the image of the threshold value that is increasingly the focus of an image , the image of the Otsu threshold values ​​obtained are also getting smaller. In this study done by testing two samples as objects of microscope that single hair samples and samples collection of several hairs were each placed on a microscope glass slide. Data collection and observation results show that for a single hair samples obtained object focus Otsu threshold value T = 97 and sample an object consisting of a collection of some of the hair is obtained Otsu threshold value T = 127. But the testing of two samples showed differences influenced by the ratio between the number of pixels on the image and the background image of an object caused by the influence of the intensity of the light source of the microscope. Keywords: Focus Identification, Digital Microscope, Otsu Threshold
PENGARUH GAIN TERHADAP FWHM DAN FWTM PADA CITRA B-MODE ULTRASONOGRAM (USG) Amitasari, Ria; Suryono, Suryono; Adi, Kusworo
BERKALA FISIKA 2015: Berkala Fisika Vol. 18 No. 2 Tahun 2015
Publisher : BERKALA FISIKA

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Abstract

The effect of gain to The Width at Half Maximum (FWHM) and Full Width at Tenth Maximum (FWTM) on B-mode image ultrasonogram (USG) has been investigated. The aim of this research is to determine the effect of gain on the spatial resolution according the measurements of FWHM and FWTM. The evaluated resolution type is axial and lateral. This research used phantom multipurpose multi tissue with gain (30 dB, 35 dB, 40 dB, 45 dB, 50 dB, 55 dB and 60 dB) on frequency variation source 6,2 Mhz, 8 MHz dan 10MHz. The axial and lateral resolution images were obtained by using USG which uses B-Mode imaging. The measurement was made by using digital image and calculated objectively with MATLAB. The measurement of FWHM and FWTM was obtained from IP-PSF analysis (In Plane-Point Spread Function) using approximation for the Gaussian function. The result shows that there is influence from gain on FWHM and FWTM. The decreasing gain resulted in decreasing of FWHM and FWTM. The decreasing of FWHM and FWTM represents better spatial resolution, and vice versa. Keywords: FWHM, Gain, Point Spread Function, Spatial resolution, USG,
Perancangan Model Pengukuran Jarak Menggunakan Computer-Aided pada Kontrol Kualitas Ultrasonografi Fallo, Frida; Adi, Kusworo; Suryono, Suryono
BERKALA FISIKA 2014: Berkala Fisika Vol. 17 No. 1 Tahun 2014
Publisher : BERKALA FISIKA

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Abstract

This research purposes are to do some quality tests through a distance measuring calculation using computer-aided system in a USG image projection and to analyze the distance measuring. In concerning with the design and its implementation, this research used digital tabulation method of image projection to compute and to analyze the distance measuring. The image value was established by variation of attenuation, TGC, and depth. Image tabulation was processed with ROI establishing and the cropping method. In depth variation, the average real distance of USG image resolution is 1 cm, the average value of vertical distance accuration of the image is 0.9747, thus the error value of the vertical distance accuration is 0.0253 cm or 0.253 mm or 0.253 % from the real distance and  the average value of the horizontal distance accuration of the image is 0.998 cm thus the error value of the horizontal distance accuration is 2x10-3 cm or 0.02 mm or 0.02 % from the real distance. For the variation of attenuation, the average value of vertical distance accuration of the image is 0.967 thus the error value of the vertical distance is 0.033 cm 0.33 mm or 0.33 %, and  the average value of the horizontal distance accuration of the image is 0.986 cm thus the error value of the horizontal distance is 0.014 cm 0r 0.14 mm or 0.14 %. Thus the error value for the vertical distance accuration is 0.031 cm or 0.31 mm or 0.31 % from the real distance. The result of the all tested components showed that the tested USG machine fullfiled the qualification of The American Association of Physicists in Medicine (AAPM) criteria. Keywords : USG, Quality Control, Distance Accuration, Computer-Aided
STUDI AWAL DAMPAK PERUBAHAN IKLIM BERBASIS ANALISIS VARIABILITAS CO2 DAN CURAH HUJAN (Studi Kasus; Semarang Jawa Tengah) Gernowo, Rahmat; Adi, Kusworo; Arifin, Zaenal
BERKALA FISIKA Vol 15, No 4 (2012): Berkala Fisika
Publisher : BERKALA FISIKA

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Abstract

Impacts of climate change marked by the increasing emissions of CO2 in the air and increased precipitation make various parties began to feel the need to measure the gas content on a regular basis.These gases gradually accumulating in Earth's atmospheric layers. However, the desire was constrainedby a number of issues which then affect the accuracy of the continuous mapping circulating gas in theatmosphere. Researchers speculate that the amount of CO2 and other gases is growing each day due tothe many additional human-produced carbon emissions from burning fossil fuels. The results obtained bythe pattern of variability in Semarang rising CO2 and rising precipitation trends show an indication ofclimate change has occurred. It was proven occurrence of climate anomalies and the previous year.Keywords: CO2 variability, Rainfall Semarang
PENENTUAN QUALITY CONTROL (QC) RESOLUSI SPASIAL PADA CITRA CT SCAN DENGAN METODE LINE SPREAD FUNCTION (LSF) DAN POINT SPREAD FUNCTION (PSF) MENGGUNAKAN PHANTOM AAPM CT PERFORMANCE Yusanti, Weirna; Budi, Wahyu Setia; Adi, Kusworo
BERKALA FISIKA 2014: Berkala Fisika Vol. 17 No. 2 Tahun 2014
Publisher : BERKALA FISIKA

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Abstract

Computed Tomography (CT scan) is one of the X-ray modalities used in radiodiagnostic, as result it needs to do Quality Control (QC). This study focused on the image quality test of CT Scan by considering the spatial resolution parameters and using calculation method of the digital image. The effect of exposure factors (voltage and electric current) was also on image quality. This study using multislice CT (MSCT) 128 slice and AAPM CT Performance Phantom. Phantom scanned with the variation of exposure factors (80, 100, 120 kV and 50, 100, 150, 200, 250, 300, 350, 400, 450, 500 mA). The determination of spatial resolution value derived from the value of Full Width at Half Maximum (FWHM) of the Line Spread Function (LSF) and Point Spread Function (PSF) graphics. Results shown that the higher voltage applied, the smaller value of FWHM which show better image quality. This method is able to detect spatial resolution up to the 5th level (hole diameter 0.75 mm), whereas it is only up to 3rd level (1.25 mm) visually. The image quality in this study has been compared with the rules of West Austr Compliance Testing Protocol 2006, and it is proved that the  image quality is still good, thus the CT Scanner is still feasible to  use. Key words: CT Scan, Spatial Resolution, Line Spread Function, Point Spread Function
SISTEM PENGENALAN WAJAH DENGAN METODE EIGENFACE DAN JARINGAN SYARAF TIRUAN (JST) Mulyono, Tri; Adi, Kusworo; Gernowo, Rahmat
BERKALA FISIKA Vol 15, No 1 (2012): Berkala Fisika
Publisher : BERKALA FISIKA

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Abstract

The development of security systems led to the development of face recognition system using image processing techniques.Research was conducted to identify a face image automatically with theeigenface method. The method used is a normalization, eigenface, neural network training and testing.Eigenface is used to reduce the dimension vector face becomes much simpler (eigen vector). Eigen vectorsobtained are used by back propagation neural network training process and recognition. Then do thetesting process using the image of a face that has not been used in the training process.The results showed the use of neural networks and eigenface to face recognition can give a goodaccuracy. The system is able to produce an acuracy of 84.6% with a FAR (False Acceptance Rate) =16.2%, FRR (False Rejection Rate) = 20% and EER (Equal Error Rate) = 0.3.Keywords : face recognition, eigenface, eigen vector, neural network
Correction of 2D Isodose Curve on the Sloping Surface using Tissue Air Ratio (TAR) Method Nuzula, Nurul Firdausi; Adi, Kusworo; Anam, Choirul
JURNAL SAINS DAN MATEMATIKA Volume 23 Issue 3 Year 2015
Publisher : JURNAL SAINS DAN MATEMATIKA

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Abstract

The curve of 2D isodose is used to determine the dose distribution in patient treated by radiotherapy. Therefore, isodose curve is very useful for planning and evaluating of the dose received by the patient. Correction of 2D isodose curve for sloping surface is very important due to the skin of patient is not flat. In this study, the correction of isodose curve was calculated using tissue air ratio (TAR) method for radiation field size of 10x10 cm2. The correction factor was obtained by comparison of TAR value for effective depth and TAR value for total depth. The correction factor then was multiplied to isodose curve for flat surface. In this study, the software for calculating the automated correction factor due to sloping of patient surface has been successfully developed. It was found that if the sloping of patient surface increases then the corrected isodose curve increases. Key wods: 2D isodose curve, tissue air ratio (TAR), correction factor, sloping patient surface.