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design and analysis of Fractal Type MIMO Radiator for the Applications of Sub 6-GHz 5G systems 8th

Design and Analysis of Fractal Type MIMO Radiator for the Ap...

引用

8th International conference on Microelectronics, Circuits, and systems, Micro 2021

作者： Vasu Babu, K. Tejaswini, R. Sowjanya, N. Sujitha, B. Vineela, T. Durga Prasad, B. Department of ECE Vasireddy Venkatadri Institute of Technology Andhra Pradesh Guntur India

ISBN: (纸本)9789819904112

In this structure, a fractal type-based MIMO radiator is designed with a size 55 mm × 30 mm using the substrate of FR-4. the S-parameters of the current design ranging 2.8–4.5 GHz with wider impedance bandwidth 1.7 GHz. the return loss and isolation parameters are − 40 dB and − 42 dB at the resonating frequency. In order to minimizing the isolation among the patches spacing is considered as 3.0 mm. By using, various parametric approaches identified that greater reduction in mutual coupling the element spacing is optimized. the technique of monopole ground plane improved the enhancement in the bandwidth and improve antenna parameters. the MIMO parameters of the proposed system are within the acceptable values to use in real time applications. © 2023, the Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Bandwidth

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design and analysis of a New Bionic Airship with Combined Floatation 8

Design and Analysis of a New Bionic Airship with Combined Fl...

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8th International conference on Mechanical engineering and Robotics Research, ICMERR 2023

作者： Longbin, Liu Mengyang, Fan Qiuping, Xu College of Aerospace Science and Engineering National University of Defense Technology Hunan Province Changsha City410073 China

ISBN: (纸本)9798350330519

Traditional airships realize their own control by EFCS (Electronic Flight Control System) driving the front and rear auxiliary airbags, pitching moment of hull and rudder surface during forward flight. In order to meet the requirement of heavy load, the shape dimension is also very large, which easily causes the tension of the skin material to exceed the allowable limit of the material, and will cause greater resistance during flight, which limits its use. In order to reduce drag and improve lift force, a new combined floating-lift integrated biomimetic airship is studied in this paper. this kind of airship is a floating-lift hybrid airship which is slightly heavier than air by properly combining traditional static-buoyant airship with other lift-source airships. It combines the advantages of traditional static-buoyant airship with other dynamic-lift airships and has high lift-drag ratio, heavy load, high controllability, high flight speed and so on. the ground control system has the advantage of simplicity, which can better exert the common advantages of buoyant and dynamic lifting body, so as to improve the aerodynamic performance and loading capacity of airship. © 2023 IEEE.

关键词： Finite element method

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design of Dynamic Monitoring Algorithm for Energy Big Data with Double Carbon Target 8

Design of Dynamic Monitoring Algorithm for Energy Big Data w...

引用

8th International conference on Energy System, Electricity, and Power, ESEP 2023

作者： Li, Xinghua Zhu, Dongge Electric Power Research Institute of State Grid Ningxia Electric Power Co. Ltd. Ningxia Yinchuan750000 China

ISBN: (数字)9781510679801

ISBN: (纸本)9781510679795

Under the dual-carbon target, the dynamic monitoring algorithm of data lacks comprehensive analysis of data, which leads to a great difference between the monitoring results and the actual situation. therefore, the design and research of dynamic monitoring algorithm of energy big data under the dual-carbon target are proposed. Combined with the characteristics of energy big data under the goal of "double carbon", the main tasks of the dynamic monitoring algorithm of energy big data are comprehensively analyzed, and the corresponding dynamic monitoring algorithm is constructed from the perspectives of energy demand and energy distribution, and the state of energy big data is corrected and calibrated from multiple dimensions. In the test results, the error between the monitoring results of different energy data and the actual situation is always stable at a low level, which shows obvious advantages compared with the control group. © 2024 SPIE.

关键词： Big data

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Topical Area: Software, System and Service engineering, S3E 2024, Held as Part of FedCSIS 2024, and 25th conference on Practical Aspects of and Solutions for Software engineering, KKIO 2024, held as part of SEAA 2024

Topical Area: Software, System and Service Engineering, S3E ...

引用

Topical Area: Software, System and Service engineering, S3E 2024, Held as Part of FedCSIS 2024, and 25th conference on Practical Aspects of and Solutions for Software engineering, KKIO 2024, held as part of SEAA 2024

ISBN: (纸本)9783031849121

the proceedings contain 8 papers. the special focus in this conference is on Topical Area: Software, System and Service engineering. the topics include: Automatic Task Classification of Software Projects for Planning and Simulation;LogGenST: A Framework for Synthetic Log Generation Using LLMs for Smart-Troubleshooting;blockchain for Public Transportation: Digital Identity and Transaction Verification Architecture;enhancing User Experience in Artificial Intelligence systems: A Practical Approach;programming Cocktail analysis Based on the Cognitive Load theory, a First Approach;Improve the design Workflow of Hardware Engineers Using a Textual DSL With Immediate Graphical Feedback.

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Visualization of Semantic Differential Questionnaire: A Case Study of Sofas and Stylish Products

Visualization of Semantic Differential Questionnaire: A Case...

引用

Joint 8th International conference on Digital Arts, Media and Technology and 6th ECTI Northern Section conference on Electrical, Electronics, Computer and Telecommunications engineering, ECTI DAMT and NCON 2023

作者： Li, Mei Lee, Suiang-Shyan Chen, Chong-Wen Huang, Yi-Jheng National Tsing Hua University Dept. of Arts and Design Hsinchu Taiwan E-SOFT Corp. Dept. of Research & Development Taipei Taiwan National Kaohsiung University of Science and Technology Dept. of Cultural and Creative Industries Kaohsiung Taiwan Yuan Ze University Dept. of Computer Science and Engineering Taoyuan Taiwan

ISBN: (纸本)9798350396546

Nowadays, consumers not only pay attention to the price of a product, but also to its design and taste. designers try to design products that meet the feelings and needs of consumers. However, how can these feelings be translated into design elements? In the field of Kansei engineering, researchers try to find the answer. When studying the relationship between consumers' feelings and design elements, the semantic differential method is often used in Kansei engineering. this study built a visualization system to visualize the data from a semantic differential questionnaire. Our survey targets were sofas and stylish products. We classified design elements into six factors: style, shape, material, color, value, and emotion. Each factor contained two sets of scales with polar adjectives, meaning opposing adjective words. We then collected 68 semantic differential questionnaires based on these factors. Finally, we displayed our results in six types of charts: two tree charts, a comprehensive analysis chart, a heatmap, a donut radar chart, a line chart, and a bar chart. When the results of the semantic differential questionnaire are visualized in these charts, it helps designers to see patterns in the data and makes it easier to interpret the results © 2023 IEEE.

关键词： Visualization

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Mobile Wireless ADHOC Networks Energy Consumption Monitoring and Quality of Service analysis 8

Mobile Wireless ADHOC Networks Energy Consumption Monitoring...

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8th IEEE International conference on Science, Technology, engineering and Mathematics, ICONSTEM 2023

作者： Jangid, Santosh Mittal, Sonam Kataria, Manoj Poonia, Vikas Sahu, Gaurav B K Birla Institute of Engineering & Technology Department of Electronics & Communication Engineering Rajasthan Pilani333031 India B K Birla Institute of Engineering & Technology Department of Information Technology Rajasthan Pilani333031 India B K Birla Institute of Engineering & Technology Department of Computer Science Engineering Rajasthan Pilani333031 India

ISBN: (纸本)9798350347791

A MANET is a mobile wireless ad hoc network self-organizing Systematized mobile phone networks devices that communicate with each other without relying on a fixed infrastructure. these networks are characterized by their dynamic topology, which can change rapidly as nodes move in and out of range of each other. MANETs are widely used in a variety of applications, including military communications, emergency response, and mobile *** it comes to mobile ad hoc networks (MANETs), managing the energy consumption of the mobile devices. Since nodes rely on battery power, excessive energy consumption can lead to nodes running out of power and leaving the network, causing disruptions in communication. therefore, this is a crucial step since monitor total annual energy expenditures nodes and develop energy-efficient routing *** important aspect of MANETs is the standard of care (QoS) provided to users. Quality of Service, or QoS, is the term used to describe level of performance and reliability of the network, such as delay, throughput, and packet loss rate. To ensure a high level of QoS, it is necessary examination of results for the purpose of the network as well as design practical routing *** work presented herein introduces a comprehensive study of energy consumption monitoring and QoS analysis in MANETs. We first review the existing literature on energy-efficient routing protocols and QoS analysis in MANETs. We then propose a novel energy consumption monitoring framework that uses a distributed approach to monitor the amount of power that individual network nodes require to function. the framework enables the detection of energy-hungry nodes and the development of energy-efficient routing *** also present a QoS analysis framework that uses a network simulator purpose: to measure how well routing techniques work under various scenarios. the framework allows the analysis of the effect of changing values of variables on the QoS of

关键词： Energy utilization

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analysis of safety margin for pump-turbine "S" characteristics of Pumped-storage Power Stations 8

Analysis of safety margin for pump-turbine "S" characteristi...

引用

8th International conference on Pumps and Fans, ICPF 2024

作者： Xiao, Wei Liu, Dianhai Pumped-Storage Technological and Economic Research Institute State Grid Xinyuan Company Ltd. 9th Floor Comprehensive Building No.1 Baiguang Road Ertiao Xicheng District Beijing China

the pump-turbine is the "heart" of Pumped-storage Power Stations, and the "S" characteristics is an inherent characteristic of the routine Francis pump-turbine unit, which is an important factor affecting the safe and stable operation of the unit. there are three main methods for conducting research on the "S" characteristics: model testing, on-site testing, and CFD numerical simulation calculation. Based on the theoretical research of CFD numerical simulation calculation, this article compares and analyzes the results of model testing and on-site testing for specific practical cases, studies the differences between these two methods, and provides suggestions for the reasonable value of safety margin in the "S" area of the pump-turbine based on engineering practice, providing reference for the design of new or renovated power stations and the hydraulic optimization of pump-turbines. © 2024 Institute of Physics Publishing. All rights reserved.

关键词： Pumped storage power plants

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the Effect of Green Roofs-Types on the design of Energy-Efficient Buildings in Gaza Strip: A Co-simulation Parametric Study. 8

The Effect of Green Roofs-Types on the Design of Energy-Effi...

引用

8th International engineering conference on Renewable Energy and Sustainability, ieCRES 2023

作者： Saleh, Sanaa. Y. Alfarra, Ola. G. Islamic University of Gaza Gaza Palestine

ISBN: (纸本)9798350300758

the building's roof, which has low thermal conductivity, is a significant contributor to meet the requirements of energy-efficient buildings in various climatic conditions. In a bid to mitigate energy consumption and achieve thermal comfort, several countermeasures have been suggested. Green and thermally insulated roofs are presented in this paper. Experimental research and numerical simulation analysis applied to a school building in Gaza Strip. this research is the first of its kind in this geographical area. the experiment using design builder 6.1.0.006 software is conducted to compare four types of roofs (a traditional roof, a traditional roof with thermal insulation, a green roof, and a green roof with thermal insulation) during all seasons of the year (hot-humid summer, cool winter, and equinoxes). the research aimed to determine which of the roofs would give more thermal comfort. Essential parameters of green roofs, such as leaf area index (LAI) and soil depth, are also set at different values to determine their effects. It is found that the thermal performance of green roof with thermal insulation is the best throughout the year, as it offers the best PMV values. In addition, higher LAI is the key to maximize energy savings in hot humid season but it increases energy consumption in cold seasons, and higher soil depth is the solution to reduce energy consumption in the cold season, but it has a negative effect in hot and warm seasons. © 2023 IEEE.

关键词： Roofs

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Grounding Performance analysis of Reinforced Concrete Grounding System of Cable Tunnel 8

Grounding Performance Analysis of Reinforced Concrete Ground...

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8th Asia conference on Power and Electrical engineering, ACPEE 2023

作者： Tong, Xuefang Chen, Lu Qiu, Tianjiao Liu, Chang Zhu, Zhanwei Tan, Bo China Electric Power Research Institute High Voltage Department Wuhan China State Grid Beijing Economics Research Institute Design Department Beijing China State Grid Beijing Electric Power Company Department of Construction Beijing China

ISBN: (纸本)9798350345520

In order to master the grounding performance of the cable tunnel reinforced concrete and optimize the grounding design of underground cables, taking a 110kV cable tunnel as an object, a cable total grounding grid model composed of cable tunnel reinforced concrete and grounding grids of substations at both ends is established, and the grounding resistance, current and potential distribution of cable grounding wires, contact potential difference and step potential difference in the cable tunnel and on the ground surface along the tunnel and the substations at both ends are calculated and analyzed. the results show that the grounding resistance of the cable tunnel reinforced concrete and the total grounding grid is about 0.1Ω, which meets the relevant grounding resistance requirements of cable grounding. In case of short circuit fault, the current mainly enters the ground from the grounding wires at both ends, which may account for more than 90%. the potential rise of the grounding strip is U-shaped. the maximum contact potential difference and step potential difference appear on the surface of substations at both ends, and the maximum potential difference can meet the requirements of personal safety. © 2023 IEEE.

关键词： Electric grounding

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Interleaved Bidirectional DC-DC Converter with Single-Phase High-Frequency Isolation 8

Interleaved Bidirectional DC-DC Converter with Single-Phase ...

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8th Southern Power Electronics conference and the 17th Brazilian Power Electronics conference, SPEC / COBEP 2023

作者： Cavalcante, Kassio Dereck N. Kattel, Menaouar Berrehil El Pinheiro, Gabriel José Oliveira Da Costa, João Mateus F. P. Sá, Edilson Mineiro Antunes, Fernando Luiz M. Federal University of Ceará - Ufc Electrical Engineering Department-PPGEE Fortaleza Brazil Federal University of Ceará - Ufc Electrical Engineering Department Fortaleza Brazil Federal Institute of Science and Technology of Ceará- Ifce Electrical Engineering Department-PPGEEC Sobral Brazil

ISBN: (纸本)9798350321128

this paper presents the operational characteristics of a new single-phase isolated bidirectional DC-DC converter associated with two different pulse width modulations (PWM), one for each power flow direction. the converter stages analysis is described. the dc voltage gain expressions in CCM, DCM and CrCM are determined. the proposed converter advantages are: new modulation, the voltage and current ripple frequency of the passive filters are four times higher than the switching frequency, which reduces the size and weight of the converter, in addition to balanced current distribution between the legs. To validate the mathematical and theoretical analysis, experimental results are obtained from a laboratory prototype from V1=380V to V2=180V, P=2.5 kW. © 2023 IEEE.

关键词： Bidirectional DC-DC converter EVs fast charging high-frequency isolation onboard charger

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