Ebinowen Tusin Dayo |
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| PMU-Installed 330kv Buses Replacing the SCADA System Panacea Due To Power Grid Failure in Nigeria | ||||||
Nigeria's severe issue is its intricate electrical grid and steadily rising power usage, which causes the adoption of contemporary monitoring and control technologies. Nonetheless, Phase Measurement Units are necessary for the extensive use and efficient running of international power networks. The present Supervisory Control and Data Acquisition (SCADA) systems are evaluated in this paper as possible strategic replacements for the installation of Phasor Measurement Units (PMUs) on 330kV buses. By providing a robust and dependable solution that improves the power grid's real time monitoring and control capabilities, it looks to reduce the frequency of power grid breakdowns............
Breakdown, 330kv grid, dependability, supervisory control, and data gathering, phasor measuring device.
[1]. Angioni, A., Lipari, G., Pau, M., Ponci, F., & Monti, A. (2017). A Low-Cost PMU to Monitor Distribution Grids. IEEE, 1–6.
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Aliyu Sabo, Abdulrazak Yakubu, Ebinowen Tusin Dayo |
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| An Examined Binary Grey Wolf Optimization Technique for the Best Phasor Measurement Unit Placement on Weak Buses | ||||||
Accurate and efficient monitoring is necessary to build a dependable and stable electrical system. Phasor Measurement Units (PMUs), which supply the synchronized data required by modern power grids, have developed into handy tools for real-time monitoring, boosting PMU effectiveness, and lowering installation costs; nonetheless, PMU placement must be done correctly. This study uses Binary Grey Wolf Optimization (BGWO), a metaheuristic-based optimization technique, to arrange PMUs in a power system on weak buses. Observing what is correct and efficient is necessary to build a dependable and stable electrical system. Phasor Measurement Units (PMUs), which supply the synchronized data required by modern power grids, have developed into extremely useful tools for real-time monitoring, boosting PMU effectiveness, and lowering installation costs; nonetheless........
phasor measurement unit, buses, binary grey wolf optimization, meta-heuristic
[1]. T. Chen, H. Ren, Y. Sun, M. Kraft, and G. A. J. Amaratunga, "Optimal Placement of Phasor Measurement Unit in Smart Grids Considering Multiple Constraints," J. Mod. Power Syst. clean energy, pp. 1–11, 2022.
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Bruno Iglesias, Josias Lima |
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| Addressed the problem of positive reviews using negative words in sentiment analysis with BERT | ||||||
Context: Customer opinions about products are important for a company. However, there is still a challenge in automatically differentiating a positive review using negative words from a truly negative review. Objective: The implementation of an artificial intelligence model that can effectively make this distinction from customer reviews in Portuguese. Method: This work proposes SACReviews approach based on fine-tuning the BERT model for Sentiment Analysis (SA) of customer opinions. Result: The SACReviews obtained an accuracy of 96% in the analysis of opinions in Portuguese. Conclusions: The SACReviews is effective in analyzing the sentiment of positive reviews using negative words.
Sentiment analysis; BERT; Portuguese language; Natural language processing; Product reviews; Machine learning; Opinion mining
[1]. DataReportal. Digital 2022 global digital overview, 2022. https://datareportal.com/reports/ digital-2022-global-overview-report (Accessed 11 January 2024).
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Ashu Sampson Oru, Etengeneng Johanes Ojong |
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| Cultural Property Management and Physical Planning: Lessons for Cameroon | ||||||
Historic preservation or conservation is a distinct and important aspect of physical planning developed because of disturbances or threats to structures or sites of historic importance or masterpieces of architecture. Conservation seeks to enhance, preserve and retain the symbols of the past. In many ways, the planning and preservation movement in Cameroon have had similar but separate patterns of institutional development. Although the Town Planning profession is older and more refined than the preservation movement, there is a shared concern for the quality of the built environment. This paper has attempted to look at the concept of cultural properties and examined the classification criteria, attributes, as well as methods of managing cultural properties in Cameroon......
Cultural properties, Preservation, Conservation, Management, Physical Planning
[1]. Ashu, S. O., ״Urban form and Non-Motorized transportation in Cameroon. A case study of Douala, Littoral Province˝, M.Sc. dissertation, department of urban and Regional Planning, University of Ibadan, Ibadan, Nigeria, 2006, Unpublished.
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Amazue, Uchenna |
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| Packet Generation Rate Impact on Performance of Wireless Sensor Network Medium Access Control Protocols | ||||||
Energy is a limited resource in wireless sensor nodes. Radio transceiver is the main component of the wireless sensor node that consumes the highest amount of energy. MAC protocols play a vital role to control the operation of radio and it significantly affects the energy consumption of the whole wireless sensor network. An important issue in the design of Wireless Sensor Network is the choice of an energy efficient MAC protocol. The performance of MAC protocols is influenced or impacted by different network parameters such as sensor density, network diameter, physical layer properties etc.......
MAC Protocol, CBR Traffic, WSN, PDR, Energy Consumption.
[1] A. Balobaid, "A Survey and Comparative Study on Different Energy Efficient MAC-Protocols for Wireless Sensor Networks," 2016 International Conference on Internet of Things and Applications (IOTA) Maharashtra Institute of Technology, Pune, India 2016. [2] M. V. Ramana Rao, T. Adilakshmi, "Performance Evaluation of X-MAC and B-MAC Routing Protocol Under Static and Mobility Scenarios in Wireless Sensor Network," International Journal of Computer and Information Engineering, vol. 9, no. 3, 2015. [3] S. K. Punia and F. Ziya, "Study on MAC Protocols and Attack: A Survey," 6th International Conference on Computing for Sustainable Global Development (INDIACom), New Delhi, India, pp. 621-625, 2019 [4] M. Gamal, N. Sadek, M. R. M. Rizk and M. A. E. Ahmed, "Optimization and Modelling of Modified Unslotted CSMA/CA for Wireless Sensor Networks," Alexandria Engineering Journal, vol.59, pp.681-691, 2020. [5] L. Chaari and L. Kamoun, "Wireless Sensor MAC Protocols Analysis," Journal of Telecommunications, vol. 2, no. 1, 2010
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Gheorghe NEAMȚU |
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| Determination and Global Modelling of Objective Functions in Environmentally Friendly Vehicles Using Sustainable Development Principles | ||||||
The paper presents a scientific study on the influence of external factors such as ambient temperature, atmospheric pressure, air humidity and road traffic on the chemical noxious emissions from the thermal engine of a hybrid car. To obtain the results of the present research, the active type experiment was used (second-order compound factorial experiment method), the experimental data were obtained with the help of the portable apparatus, specific to the determination of chemical noxious substances in road vehicles at the Periodic Technical Inspection stations, in compliance with the principles of sustainable development (eco-driving of road vehicles; reduction of engine consumption......
sustainable development, experimental research, hybrid car, objective function, environmental factors, road traffic.
[1]
H. G. Brundtland, "Our Common Future, Chairman's Foreword," Commission on Environment and Development, 1986.
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Ernesto Guevara Leal Maniçoba, Jacques Cousteau da Silva Borges |
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| Three-dimensional graphic interfaces in preparing intuitive risk maps | ||||||
Risk analysis is a fundamental tool for worker safety in their work activity, and also serves as the basis for several other documents and occupational safety programs. Its current construction based on two-dimensional modeling of the environment on a floor plan and the presentation of multiple groups of risks proves to be insufficient and can lead to doubts from both occupational safety teams and the employees themselves. Therefore, this article proposes a complementary analysis to the current methodology, with the use of a three-dimensional interface to better present these environments with greater visual demand, as well as presenting a case study carried out in the outpatient medical health sector of the Natal-Central do Rio campus. Federal Institute of Education, Science and Technology of Rio Grande do Norte.
Occupational Safety, Health Administration, risk maps, Engineering planning
[1]. HUBBARD, D. The failure of risk management: Why it's broken and how I'm fix it . 1 ed. New Jersey: John Wiley & Sons, 2009.
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xxx |
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| Performance Analysis of Speed Control of Induction Motor Using Various Ai Techniques | ||||||
This paper explores the advanced control of induction motors using artificial intelligence (AI) techniques, focusing on speed regulation through fuzzy logic controller (FLC) and artificial neural network (ANN) methodologies. Utilizing MATLAB Simulink for modeling and simulation, the study meticulously defines induction motor parameters such as nominal power, frequency, voltage, resistances, inductances, inertia, friction factor, and pole pair, to create a comprehensive simulation environment. The primary objective is to evaluate and compare the efficacy of FLC and ANN in controlling the motor speed. The performance of these AI-based control strategies is assessed by setting a reference speed of 1500 RPM......
Induction motors, speed control, fuzzy logic controller, ANN controller, Pulse Generator.
[1]. Boldea, I., & Nasar, S. A. (2013). Electric drives. CRC Press.
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Amabikutol Emmanuel Jonathan |
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| Enhancing Load-Frequency Control System of Gas Turbine Using Non-linear Design Technique Based PID Controller | ||||||
The significance of efficient control system for load-frequency conditioning in gas is that it makes sure that both quality and reliable transient response are achieved. This paper presents the design of a load-frequency control (LFC) system for enhancing response performance of a gas turbine. The model dynamic of a simple-cycle, single shaft heavy duty gas turbine operating at nominal conditions for speed/load-frequency control was obtained. A proportional integral and derivative (PID) compensator was designed using a nonlinear model of the MATLAB/Simulink. The PID was integrated with the Simulink model of a gas turbine. Simulations were conducted for unit step speed with the initial analogue compensator, and then with the designed PID compensator. The results showed that both compensators were able to achieve the design specification. The PID was then improved by adding a low pass filter to the derivative component. Simulation was then performed with the improved PID, and the result showed that the overshoot level was significantly reduced. This indicated an improvement in the transient response performance and hence better stability in nominal speed/load-frequency operating condition.
xxx.
[1]. Hassan Moustafa M.A., Emam Shalan H. and Bahgat A.B., Parameter Estimation and Dynamic Simulation Of Gas Turbine Model In Combined Cycle Power Plants Based On Actual Operational Data, Journal of American Science,7(5), pp. 303-310, 2016.
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Shalini Kumari, Arun Mishra,Dr.Ritesh Sadiwala |
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| Analysis of Picture Compression Algorithms for Next Generation Networks | ||||||
Improvements in information-focused digital sound, image, and video-based (sight and sound) online applications have made more effective approaches necessary. With the advent of the digital age and the growth of innovation, a massive amount of data has surfaced. Managing this amount of data can often result in problems. Computerized data needs to be stored and recovered with efficiency and a clear goal in mind in order to be used practically. Techniques for image compression are essential to achieving this goal. The goal of picture information compression techniques is to transfer or store an image with fewer bits while maintaining a detectable level of data loss.
Image, Compression, DCT, Wavelet, NGN
[1]. Xiaoyu Ruan and Rajendra Katti , "Using Improved Shannon Fado Elias Codes Data Encryption" Proceedings of ISIT Conference,
North Dakota State University Fargo, July 9-14, 2006.
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Aldo Bernardo Barbosa, Vagner Rogério dos Santos |
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| Development of a Cybersecurity Checklist for a Telemanagement System using Internet of Things (IoT) Technology in Healthcare | ||||||
Every day, there is a significant increase in connected sensors, and in health, it is no different. For this reason, data security has been a major concern in healthcare technologies because hackers or attackers can easily access sensor data and, consequently, important user information. This article aims to present a study in which a checklist will be drawn up to help assess cybersecurity for designing, installing, and auditing Internet of Things (IoT) systems for use in healthcare. It proposes using a list of corrective action points, helping to identify and record corrective actions and thus organizing the solutions that can be used to mitigate possible data security weaknesses. These vulnerabilities were investigated in the three main pillars of data security: Integrity, Confidentiality, and Availability, based on research that cross-referenced information on possible weaknesses from relevant bibliographic references.
Internet of things; data security; cibersecurity; health.
[1]. Kuwabara, C. C. T., Évora, Y. D. M., and Oliveira, M. M. B. 2010. Risk management in Technovigilance: Construction and validation of a medical-hospital product evaluation instrument. Revista Latino-Americana de Enfermagem, 18:5, 943–951. https://doi.org/10.1590/s0104-11692010000500015 [2]. Lorenzetti, J., Lanzoni, G. M. de M., Assuiti, L. F. C., Pires, D. E. P. and Ramos, F. R. S. 2014. Health management in Brazil: dialogue with public and private managers. Texto & Contexto - Enfermagem, 23:2, 417–425. https://doi.org/10.1590/0104-07072014000290013 [3]. Mishra, P., Puthal, D., Tiwary, M. and Mohanty, S. P. 2019. Software defined IoT systems: Properties, state of the art, and future research. IEEE wireless communications, 26:6, 64–71. https://doi.org/10.1109/mwc.001.1900083 [4]. Paiva, F. (2019 Jan 16). IoT na Saúde: O futuro já começou. Janeiro de 2019. Portal Saúde Business. https://www.saudebusiness.com/ti-e-inovao/iot-na-sade-o-futuro-j-chegou. [5]. Selvaraj, S. and Sundaravaradhan, S. 2020. Challenges and opportunities in IoT healthcare systems: a systematic review. SN Applied Sciences, 2:139. https://doi.org/10.1007/s42452-019-1925-y
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I Gede Sujana Eka Putra, Ni Luh Putu Labasariyani |
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| Image-Based Classification of Apple Freshness Using Wavelet And K-Nearest Neighbors Method | ||||||
Detecting the freshness of fresh apples is an important aspect of the agricultural industry and fruit marketing. Moreover, people in Bali, who are predominantly Hindu, use apple fruit for religious ceremonies, so identifying the freshness of apples helps them choose good quality apples. In this research, we propose an apple classification method using the k-Nearest Neighbors method. This research aims to recognize the freshness of apples based on a dataset of apple images. The techniques used include image pre-processing and classification. Fruit images are processed to increase contrast, then important features are extracted using wavelets.......
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[1] U. Satrya Darmawan Putra Bahari, "Klasifikasi Buah Segar dengan Menggunakan Teknik Computer Vision Untuk Pendeteksian Kualitas dan Kesegaran Buah," J. Mhs. Tek. Inform., vol. 7, no. 3, pp. 1567–1573, 2023.
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Idhoko, K.E., Ezenwa, S.P. |
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| Street Guide Mapping Of Part of Ekwulobia, Aguata L.G.A, Anambra State | ||||||
The introduction and advancement of computer technology in the twenty-first century has boosted the speed and capacity of various geoinformation and map-making operations in general. The advances have transformed the mapping process, but the full potential of such sophisticated technologies and science has yet to be realized in Nigeria. This project is aimed at street guide mapping of part of Ekwulobia with the view of providing an updated street guide map for development and planning purposes. Its objectives are to: collect and integrate existing street maps and Google Earth imagery for the targeted area of Ekwulobia; scan, georeference, and digitize the collected street maps and imagery to ensure accuracy and compatibility.......
Anambra State, Database, GIS, Georeferencing, Map Revision.
[1]. Akingbade, A. (2012). Enhancing Tourism with Reliable Navigation Tools. Journal of Urban Planning and Development, 138(1), 45-55.
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