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TELKOMNIKA Telecommunication, Computing, Electronics and Control
Wind turbine doubly-fed induction generator defects diagnosis under voltage dips
Voltage dips are brief but frequent disturbances that can be defined as the most important problem affecting all electrical grids, it cannot be completely avoided and represent the main priority for the industry. This study remains part of monitoring…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
A stochastic algorithm for solving the posterior inference problem in topic models
Latent Dirichlet allocation (LDA) is an important probabilistic generative
model and has usually used in many domains such as text mining, retrieving information, or natural language processing domains. The posterior inference is the important…
model and has usually used in many domains such as text mining, retrieving information, or natural language processing domains. The posterior inference is the important…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
Model design to develop online web based questionnaire
This research aims to create a web-based application for sharing questionnaires. The developed features are creating questionnaires, sharing questionnaire in the dashboard, filter the questionnaire as the requested criterias, exchange the rewarded…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
Optimization of light source wavelength for ammonia detection in water
Optimization of light source wavelength for ammonia detection in surface water is presented in this work. For the ammonia detection, the surface water sample is mixed with sodium chloride and nessler reagent, whereas the sensor head consists of…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
Chroma consistency and luminous efficacy for a WLED using remote phosphor configuration with a tri-layer design
The light quality of white-light-emitting diodes (WLEDs), an essential
element for the improvement of WLEDs performance, can now be estimated by the angular color uniformity (ACU). In this study, a single
micro-patterned layer is used to compare…
element for the improvement of WLEDs performance, can now be estimated by the angular color uniformity (ACU). In this study, a single
micro-patterned layer is used to compare…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
Using triple-layer remote phosphor structures LaVO4:Eu3+ and ZnS:Cu,Sn to improve the chromatic uniformity and luminous quality of WLEDs
This research paper investigates the novel triple remote phosphor layer for improving the remote phosphor’s angular chroma uniformity (ACU) of down-light lamps by using remote micro-patterned phosphor layers (RMPP). In addition, introducing the…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
A method for semantic-based image retrieval using hierarchical clustering tree and graph
Semantic extraction for images is an urgent problem and is applied in many different semantic retrieval systems. In this paper, a semantic-based image retrieval (SBIR) system is proposed based on the combination of growth partitioning tree (GP-Tree),…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
Multi-threaded approach in generating frequent itemset of Apriori algorithm based on trie data structure
This research is about the application of multi-threaded and trie data
structures to the support calculation problem in the Apriori algorithm.
The support calculation results can search the association rule for market basket analysis problems. The…
structures to the support calculation problem in the Apriori algorithm.
The support calculation results can search the association rule for market basket analysis problems. The…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
Clutter reduction technique based on clutter model for automatic target classification in forward scatter radar
Classification becomes one of the important elements in the forward scatter radar (FSR) micro-sensors network. This classification performance is dependent on the target’s profile behaviour and the network’s surrounding; and one of the factors that…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
A study of redesigning food delivery application in Thailand
User interface (UI) and user experience (UX) design is fundamental to the stickiness of any application. Food delivery is no exception. With the food delivery business sector on the rise during the coronavirus disease 2019 (COVID-19) pandemic, it is…