Browse Items (67 total)
- Collection: Vol. 18, No. 3 2020
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TELKOMNIKA Telecommunication, Computing, Electronics and Control
Comparison between piezoelectric transformer and electromagnetic transformer used in electronic circuitsv
This paper presents study, modeling and simulation of the piezoelectric
material works as transformer (piezoelectric transformer (PT)) in power
electronic circuits, comparisons are made with the regular transformer
(iron core) works in the same…
material works as transformer (piezoelectric transformer (PT)) in power
electronic circuits, comparisons are made with the regular transformer
(iron core) works in the same…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
Image denosing in underwater acoustic noise using discrete wavelet transform with different noise level estimation
In many applications, Image de-noising and improvement represent essential processes in presence of colored noise such that in underwater. Power spectral density of the noise is changeable within a definite frequency range, and autocorrelation noise…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
Wireless communication system with frequency selective channel OFDM modulation technique
This paper introduces the design and implementation of a wireless
communication system with MATLAB based on orthognal frequency division multiplexing technique (OFDM). The constructed system is consisting of transmitter, fading channel and receiver.…
communication system with MATLAB based on orthognal frequency division multiplexing technique (OFDM). The constructed system is consisting of transmitter, fading channel and receiver.…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
Contour evolution method for precise boundary delineation of medical images
Image segmentation is an important precursor to boundary delineation
of medical images. One of the major challenges in applying automatic image segmentation in medical images is the imperfection in the imaging process which can result in…
of medical images. One of the major challenges in applying automatic image segmentation in medical images is the imperfection in the imaging process which can result in…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
Classification of pneumonia from X-ray images using siamese convolutional network
Pneumonia is one of the highest global causes of deaths especially for children under 5 years old. This happened mainly because of the difficulties in identifying the cause of pneumonia. As a result, the treatment given may not be suitable for each…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
UNet-VGG16 with transfer learning for MRI-based brain tumor segmentation
A brain tumor is one of a deadly disease that needs high accuracy in its
medical surgery. Brain tumor detection can be done through magnetic
resonance imaging (MRI). Image segmentation for the MRI brain tumor aims to separate the tumor area (as the…
medical surgery. Brain tumor detection can be done through magnetic
resonance imaging (MRI). Image segmentation for the MRI brain tumor aims to separate the tumor area (as the…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
Web-app realization of Shor’s quantum factoring algorithm and Grover’s quantum search algorithm
Quantum algorithms are well-known for their quadratic if not exponential speedup over their classical counterparts. The two widely-known quantum algorithms are Shor’s quantum factoring algorithm and Grover’s quantum search algorithm. Shor’s quantum…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
Comparison of machine learning performance for earthquake prediction in Indonesia using 30 years historical data
Indonesia resides on most earthquake region with more than 100 active volcanoes, and high number of seismic activities per year. In order to reduce the casualty, some method to predict earthquake have been developed to estimate the seismic movement.…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
Communication between PLC different vendors using OPC server improved with application device
Many industries often use different devices and controllers in automation systems. They all face the same difficulty how to exchange data between all those components. This paper proposed the implementation of OPC Server as software interface on…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
Effects of noises on near infrared sensor for blood glucose level measurement
This paper proposed the method of measuring glucose level in solution using near infrared light (NIR) and photodiode sensor. We studied noises that occurred on the output signal of NIR sensor in three different room
conditions in order to know the…
conditions in order to know the…