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Evaluation of an artificial intelligence-based model in diagnosing periodontal radiographic bone loss

Clinical Oral Investigations 2025年第4期29卷 1-8页

作者： Cassiano, Luanny de Brito Avelino da Silva, Jordão Paulino Cassiano Martins, Agnes Andrade Barbosa, Matheus Targino Rodrigues, Katryne Targino Barbosa, Ádylla Rominne Lima da Silva Gomes, Gabriela Ellen Maia, Paulo Raphael Leite de Oliveira, Patrícia Teixeira de Sousa Lopes, Maria Luiza Diniz da Silva, Ivanovitch Medeiros Dantas de Aquino Martins, Ana Rafaela Luz Department of Dentistry Federal University of Rio Grande do Norte - UFRN Rio Grande do Norte Natal Brazil Postgraduate Program in Electrical and Computer Engineering Center of Technology Rio Grande do Norte Natal Brazil Department of Dentistry Federal University of Rio Grande do Norte Av. Senador Salgado Filho 1787 Rio Grande do Norte Natal 59056-000 Brazil

Objective: To develop an artificial intelligence model based on convolutional neural network for detecting and measuring periodontal radiographic bone loss (RBL). Materials and methods: Keypoint annotations were carried out in 595 digital bitewing radiographic images using a computer Vision Annotation Tool. The dataset was splitted: 416 of these images were trained using the You Only Look Once version 8 architecture with pose estimation (YOLO-v8-pose), 119 images were destined for the validation set, and 60 images were used for the test set, resulting in a model capable of detecting keypoints related to the cementoenamel junction (CEJ) and alveolar bone crest (ABC). In order to evaluate the performance of the obtained model, the following metrics were analyzed: F1-Score, precision, sensitivity and mean average precision (mAP). Then, an algorithm was implemented to measure the RBL by calculating the Euclidean distance between CEJ and ABC. Results: The model achieved an F1-Score of 66,89%, precision of 61,1%, a sensitivity of 73,9% and an mAP of 73.8%. Conclusions: The developed model and its algorithm for identifying and measuring periodontal radiographic bone loss demonstrated promising performance, thereby presenting a potential tool for assisting in periodontal diagnosis. Further studies comparing the developed model with manual measurements performed by specialists are necessary for its validation. Clinical relevance: Applying artificial intelligence in clinical dental practice can support diagnosis, streamline clinical workflows, and inform treatment planning, representing a significant advancement in dental automation. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2025.

关键词： Alveolar bone loss computer neural networks Deep learning Periodontitis Radiography

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Performance Evaluation of Standard Ternary Inverters Using Carbon Nanotube Field Effect Transistors

Performance Evaluation of Standard Ternary Inverters Using C...

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International Conference on Inventive Computation Technologies (ICICT)

作者： Sandeep Kanaujia Sandeep Gupta Rajev Kumar Sharma Vineet Bhushan Saran Jitendra Kumar Deparment of Computer Applications United Institute of Management Naini Prayagraj India Department of Electrical Engineering Graphic Era (Deemed to be University) Dehradun Uttarakhand India Electronics and Communication Engineering United University Prayagraj India

ISBN: (数字)9798331512248

ISBN: (纸本)9798331512255

Ternary logic system can transfer more data as compare to binary logic in a digital system. This paper presents performance analysis of various existing energy-efficient designs for standard ternary Inverter (STI) logic gates. The circuits of various STIs have been designed using CNTFET technology. Simulations have been performed using the Synopsys HSPICE tool with a 32 nm CNTFET model, provided by Stanford University. Average power consumption and propagation delays have been calculated for each design, and values of PDP have been computed.

关键词： Power demand Computational modeling Logic gates Multivalued logic Inverters Vectors Threshold voltage CNTFETs Integrated circuit modeling Standards

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A Low-Cost Automated Test Bench for Server Power Supply in Excel VBA

A Low-Cost Automated Test Bench for Server Power Supply in E...

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IEEE Eurasia Conference on IOT, Communication and engineering (ECICE)

作者： Joan Cabugayan Marianne Sejera Department of Electrical Electronics and Computer Engineering Mapua University Manila Philippines

ISBN: (纸本)9781665482097

Servers used in various applications perform critical tasks. A key component of a server for its continuous operation is the Power Supply Unit (PSU), which must be dependable at a reasonable cost. PSU testing must be automated to assure high quality and reliability; however, it might be expensive. This study focuses on the design and implementation of bench automation for testing server PSUs using a remarkable automation approach based on Excel VBA, which supports both GPIB and USB interfacing and does not rely on expensive hardware and software automated testing solutions.

关键词： Automation Costs Power supplies Instruments Universal Serial Bus Software Servers

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The Effect of the Ratio of Remanent Flux Density to Coercivity of Magnet on Spoke-Type Permanent Magnet Synchronous Motor (PMSM) Performance

The Effect of the Ratio of Remanent Flux Density to Coercivi...

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International Conference on Power electronics (ICPE)

作者： Minyeong Choi Yang-Ki Hong Hoyun Won Shuhui Li S. Rahman M. Nurunnabi Woncheol Lee Chang-Dong Yeo Department of Electrical and Computer Engineering Tuscaloosa Alabama USA Samsung Electronics Suwon South Korea Department of Mechanical Engineering Texas Tech University Lubbock Texas USA

Spoke-type PMSMs were designed with commercial permanent magnets and theoretically designed hexaferrite: Nd-Fe-B (NdFe35, G1NH), Alnico (8B, 8H, 9), and La-CoSrM hexaferrite (NMF-15G). It was found that coercivity (H c ) plays a crucial role in determining motor performance. The ANSYS Maxwell software was used to characterize the designed motor performance. Commercial RE-free Alnico 9 holds a 10.5 MGOe of (BH) max , much higher than a 5.5 MGOe of RE-free Alnico 8B/8H and SrM (SrFe 12 O 19 ) hexaferrite magnets. However, the Alnico 9 motor performance is not better than the other Alnico 8B/8H and hexaferrite motors. The spoke-type PMSM with our theoretically designed SrM hexaferrite simulated motor performance. A motor performs best when the H c /B r ratio equals one with a high H c . For instance, the motor torque and peak power increase to 189 Nm and 178 kW, respectively, as the H c increases to 4.86 kOe from 2.43 kOe. However, the motor performance is not significantly changed with a fixed H c and various B r . It was found that regardless of (BH) max , coercivity (H c ) plays a dominant role in motor performance.

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Feature Map Guided Strategy for Robust Multi-Resolution Image Dehazing

Feature Map Guided Strategy for Robust Multi-Resolution Imag...

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electrical electronics and Computing Technologies (ICEECT), International Conference on

作者： Avishek Kumar Nagendra Kumar Akhilesh Kumar Mishra Gouransh Pathak Amit Chatterjee Centre for Sensors Instrumentation and Cyber-Physical System Engineering IIT Delhi New Delhi India Department of Electronics and Communication Engineering NIT Jamshedpur Jamshedpur India Department of Electrical and Electronics Engineering IILM Univeristy Greater Noida India Department of Computer Science and Engineering PIEMR-Indore Indore India School of Computing DIT University Dehradun India

ISBN: (数字)9798350378092

ISBN: (纸本)9798350378108

Presence of haze in digital images poses significant challenges in computer vision applications, adversely impacting tasks like image segmentation and object detection. To tackle this issue, this paper introduces a fusion-based dehazing strategy by integrating color conversion, adaptive gamma correction, and parameter estimation. Through multi resolution fusion of chromatic and brightness maps, the algorithm efficiently removes haze, surpassing conventional single-image approaches while maintaining computational efficacy. From comparative analysis it is evident that, the proposed strategy is highly effective in terms of improving image quality for diverse applications.

关键词： Image quality computers Image segmentation computer vision Image resolution Parameter estimation Image color analysis Digital images Object detection Computational efficiency

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Double Media-Based Modulation Scheme for High-Rate Wireless Communication Systems

arXiv

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arXiv 2024年

作者： Ozden, Burak Ahmet Aydin, Erdogan Cogen, Fatih Department of Electrical and Electronics Engineering Istanbul Medeniyet University Istanbul34857 Turkey Department of Computer Engineering Yildiz Technical University Istanbul34220 Turkey Istanbul Medeniyet University Department of Electrical and Electronics Engineering Uskudar Istanbul34857 Turkey 6GEN Laboratory Next-Generation R&D Network Technologies Istanbul34854 Turkey

Current wireless communication technologies are insufficient in the face of ever-increasing demands. Therefore, novel and high-performance communication systems are needed. In this paper, a novel high data rate and high-performance index modulation scheme called double media-based modulation (DMBM) is proposed. The DMBM system doubles the number of mirror activation patterns (MAPs) and the number of transmitted symbols compared to the traditional MBM system during the same symbol period. In this way, the spectral efficiency of the DMBM is doubled and the error performance improves as the number of bits carried in the indices increases. Performance analysis of the DMBM scheme is evaluated for M-ary quadrature amplitude modulation (M-QAM) on Rayleigh fading channels. The error performance of the proposed DMBM system is compared with spatial modulation (SM), quadrature SM (QSM), MBM, and double SM (DSM) techniques. Also, the throughput, complexity, energy efficiency, spectral efficiency, and capacity analyses for the proposed DMBM system and SM, QSM, MBM, and DSM systems are presented. All analysis results show that the proposed DMBM system is superior to the compared systems. Copyright © 2024, The Authors. All rights reserved.

关键词： Quadrature amplitude modulation

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QAM receiver based on light amplifiers measured with effective role of optical coherent duobinary transmitter

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Journal of Optical Communications 2024年第0期45卷 s445-s452页

作者： Eid, Mahmoud M. A. Arunachalam, Rajesh Sorathiya, Vishal Lavadiya, Sunil Patel, Shobhit K. Parmar, Juveriya Delwar, Tahesin Samira Ryu, Jee Youl Nyangaresi, Vincent Omollo Zaki Rashed, Ahmed Nabih Department of Electrical Engineering College of Engineering Taif University Taif Saudi Arabia Telangana Hyderabad501510 India Department of Information and Communication Technology Marwadi University Rajkot India Department of Electronics and Communication Engineering Marwadi University Rajkot360003 India Department of Computer Engineering Marwadi University Rajkot360003 India Department of Physics Marwadi University Rajkot360003 India Department of Smart Robotics and Application Engineering Pukyong National University Busan Korea Republic of Tom Mboya University College P.O. Box 199-40300 Homabay Kenya Electronics and Electrical Communications Engineering Department Faculty of Electronic Engineering Menoufia University Menouf32951 Egypt

Effective role of optical duobinary transmitter with optical coherent quadrature amplitude modulation (QAM) receiver based on light amplifiers measured is stimulated by using optisystem simulation software version 13. Signal, noise power levels are stimulated after long haul fiber optic range up to 350 km distance. Measured light amplifiers, optical duobinary transmitters and optical QAM receiver are employed to measure the peak signal amplitude power (SAP) and noise signal power for bit rate transmission with 100 Gb/s based 350 km length. Maximum signal power level margin is enhanced with high data rates transmission. © 2022 Walter de Gruyter GmbH, Berlin/Boston.

关键词： Quadrature amplitude modulation

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The price of distributed: Rate loss in the CEO problem

arXiv

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arXiv 2022年

作者： Atalik, Arda Köse, Alper Gastpar, Michael Department Of Electrical And Electronics Engineering Bilkent University Turkey Department Of Electrical And Electronics Engineering Bogazici University Turkey School Of Computer And Communication Sciences EPFL

In the distributed remote (CEO) source coding problem, many separate encoders observe independently noisy copies of an underlying source. The rate loss is the difference between the rate required in this distributed setting and the rate that would be required in a setting where the encoders can fully cooperate. In this sense, the rate loss characterizes the price of distributed processing. We survey and extend the known results on the rate loss in various settings, with a particular emphasis on the case where the noise in the observations is Gaussian, but the underlying source is general. © 2022, CC BY.

关键词： Gaussian noise (electronic)

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Partial Discharge Investigation of Defective Cable Terminations using Different Voltage Sources

Partial Discharge Investigation of Defective Cable Terminati...

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2022 International Conference on Power, Energy and Innovations, ICPEI 2022

作者： Jamtsho, Karma Suwanasri, Thanapong Panmala, Nattapon Suwanasri, Cattareeya EPE Program The Sirindhorn International Thai-German Graduate School of Engineering KMUTNB 1518 Pracharat 1 Rd.Bangsue Bangkok Thailand Department of Teacher Training in Electrical Engineering Faculty of Technical Education KMUTNB 1518 Pracharat 1 Rd. Bangsue Bangkok Thailand Department of Electrical and Computer Engineering Faculty of Engineering KMUTNB 1518 Pracharat 1 Rd.Bangsue Bangkok Thailand

ISBN: (数字)9781665460194

ISBN: (纸本)9781665460194

This paper presents the Partial Discharge (PD) investigation of defective medium voltage (3.6/6(7.2) kV) cable terminations and the impact of using different voltage sources namely AC 50 Hz and Very Low Frequency (VLF) voltage source of 0.1 Hz as supply voltage. The PD is detected by High Frequency Current Transformer (HFCT). Electric field stress investigation is carried out by using Finite Element Method Magnetic (FEMM) simulation tool. The defective cable terminations used are no-stress control, needle tip on insulation screen and sandpaper scrubbed termination. PD investigation is carried out by applying 50 Hz and 0.1 Hz voltage sources and Partial Discharge Inception Voltage (PDIV), Partial Discharge Extinction Voltage (PDEV), PD magnitude and Pulse Repetition Rate are recorded. The comparison of PDIV values demonstrates the impact of different voltage sources. © 2022 IEEE.

关键词： Electric connectors

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Antenna Selection in 5G Communication Networks Using the Improved Grey Wolf Optimizer Algorithm

Antenna Selection in 5G Communication Networks Using the Imp...

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Smart electronics and Communication (ICOSEC), International Conference on

作者： Dipali Bansal Malay Ranjan Tripathy Prasad Shastry Department of Electronics and Communication Engineering Amity University Noida Uttar Pradesh India Department of Electrical and Computer Engineering Bradley University Peoria IL U.S.A

Determining the direction of arrival, which requires the estimate of smart antenna properties, is one way to improve communication performance. Data has already been sorted using spectral classification to determine the best course of action for improving service quality. This research work proposes an alternative approach called Improved Grey Wolf Optimizer (I-GWO) to enhance the spectrum analysis model for choosing the optimum antenna and determining the direction of arrival (DOA) route in 5G communication systems. The antenna signal emission direction is tracked, and its properties are calculated using the I-GWO approach. The proposed model examines the radiation pattern and effectiveness of antenna beam to strengthen the signal and reduce noise (SNR). In comparison to earlier techniques, the I-GWO algorithm speeds up searching and improves the Signal-to-Interference-plus-Noise Ratio (SINR) value with each iteration of the snapshot. Using intelligent directional signal processing in 5G communication systems, the existing methodologies are analyzed to provide an algorithm and methodology, offer the results and analysis, and carry out a comparison study. The I-GWO method aids in the development of more effective and efficient 5G communication systems while enhancing signal quality.

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