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Menampilkan 1–6 dari 6 artikel
Indoor Positioning using Smartphones: An Improved Time-of-Arrival Technique
Vu, Thang C.
; Nguyen, Trung H.
; Nguyen, Mui D.
; Nguyen, Dung T.
; Nguyen, Tao V.
; Dinh, Long Q.
; Nguyen, Minh T.
Journal of Computing Theories and Applications
Vol 3
, No 1
(2025)
Indoor positioning technology based on smartphones plays an important role in the current technological development context. Especially in applications such as warehouses, supermarkets, hospitals, or buildings. While the global positioning system (GNSS) is popular and effective outdoors, it has several limitations when operating in enclosed spaces, such as indoors, due to the complexity of these environments. Smartphones have many built-in sensors (such as light sensors, sound sensors, gyroscope...
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A Novel Clustering Solution Based on Energy Threshold for Energy Efficiency Purposes in Wireless Sensor Networks
Vu, Thang C.
; Do, Binh D.
; Nguyen, Mui D.
; Nguyen, Dung T.
; Nguyen, Tao V.
; Dinh, Long Q.
; Nguyen, Hung T.
; Nguyen, Minh T.
Journal of Computing Theories and Applications
Vol 3
, No 1
(2025)
In many wireless sensor network (WSN) applications, nodes are randomly deployed and self-organize into a wireless network to perform tasks. In practice, recharging the batteries of network nodes after deployment is often difficult. Network nodes often operate autonomously, so the main focus is on increasing the node lifetime. Data redundancy is another limitation that makes nodes inefficient. In most cases, densely deployed nodes in a monitoring area will have redundant data from neighboring nod...
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Comprehensive Review of Security Problems in Mobile Robotic Assistant Systems: Issues, Solutions, and Challenges
Journal of Computing Theories and Applications
Vol 2
, No 2
(2024)
Nowadays, robots in the modern world are playing an important and increasingly popular role. MRA (Mobile Robotic Assistant) is a type of mobile robot designed to support humans in many different fields, helping to improve efficiency and safety in daily activities, work, or medical treatment. The number of MRAs is increasing and diverse in function, in addition to the ability to collect and process data, MRAs also have the ability to physically interact with users. Therefore, security is one of t...
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A Comprehensive Study on Applications of Blockchain in Wireless Sensor Networks for Security Purposes
Nguyen, Mui Duc
; Nguyen, Minh Tuan
; Vu, Thang Chien
; Ta, Tien Minh
; Tran, Quang Anh
; Nguyen, Dung The
Journal of Computing Theories and Applications
Vol 2
, No 1
(2024)
The paper evaluates potential applications of blockchain technology in enhancing the security and reliability of Wireless Sensor Networks (WSNs). The existing vulnerabilities in WSNs, such as concerns regarding data integrity and security, demand innovative security solutions. Through systematic analysis, this paper provides valuable insights to expand understanding of WSNs security, explaining the feasibility and benefits of deploying blockchain technology. Possible attacks in the networks are...
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PENERAPAN METODE ROLE PLAY UNTUK MENGEMBANGKAN KEMAMPUAN BERBICARA BAHASA INGGRIS GURU SD IT ANNUUR GEMOLONG
Adi Widya: Jurnal Pengabdian Masyarakat
Vol 1
, No 1
(2024)
The aim of this research is to improve speaking skill of elementary teacher by using Role Play. . Data of this research uses pre – test and post – test of 30 teachers in SD IT ANNUR Gemolong Sragen. Meanwhile, this research was conducted using proportional stratified random sampling for taking its data sample andindependent sample t-testfor analyzing its data. According to the research result, the average of pre-test in 4th grade, 5th grade and 6thgrade (before any treatment) is lower than t...
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PENERAPAN METODE GRAMMAR TRANSLATION UNTUK MENGEMBANGKAN KEMAMPUAN TATA BAHASA INGGRIS SISWA SMK SARASWATI
Adi Widya: Jurnal Pengabdian Masyarakat
Vol 1
, No 1
(2024)
The aim of this research is to improve English grammar skill of private vocational students by using Grammar Translation Method (GTM). The grammar itself focuses on simple present tense and simple past tense. Data of this research uses pre – test and post – test of 35 students majoring accounting in SMK Saraswati. Meanwhile, this research was conducted using proportional stratified random sampling for taking its data sample and independent sample t-test for analyzing its data. According to t...
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