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Preprint BRIEF REPORT | doi:10.20944/preprints201807.0590.v1

Hardware Design of a Flight Control Computer System based on Multi-core Digital Signal Processor and Field Programmable Gate Array

Francisco Bilendo, Sheng Shouzhao

Subject: Engineering, Electrical And Electronic Engineering Keywords: Field Programmable Gate Array, Flight Control System, and Hardware Design.

Online: 30 July 2018 (14:45:25 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201708.0019.v1

Reconfigurable, Multi-channel and Modular Bioimpedance Spectroscopy System on Field Programmable Gate Arrays

Anis Nurashikin Nordin, Ahmed Al-Hashimi, Amelia Wong Azman

Subject: Engineering, Electrical And Electronic Engineering Keywords: Bioimpedance Spectroscopy; Field Programmable Gate Array; Digital Auto Balance Bridge; Multichannel data acquisition;

Online: 4 August 2017 (16:05:29 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201703.0003.v1

A Single-Stage Buck-Boost Three-Level Neutral-Point-Clamped Inverter with Two Input Sources for the Grid-Tied Photovoltaic Power Generation

Xuefeng Ge, Feng Gao, Mengxing Chen

Subject: Engineering, Electrical And Electronic Engineering Keywords: neutral-point-clamped inverter; buck-boost inverter; single stage conversion; photovoltaic inverter

Online: 1 March 2017 (09:31:28 CET)

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Preprint ARTICLE | doi:10.20944/preprints202405.1410.v1

Compound Attitude Control Strategy for Reusable Launch Vehicle Based on Improved PSO Algorithm

Shunfu Yang, Lu Gan, Tianyi Wang, Enze Zhu, Ling Yang, Hu Chen

Subject: Engineering, Aerospace Engineering Keywords: Reusable launch vehicle; Attitude control; Compound control; Fuzzy PID; Improved PSO algorithm

Online: 22 May 2024 (08:13:02 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.2290.v1

Enhancing Air Quality Predictions on University Campuses: A Machine Learning Approach to PM2.5 Forecasting at the University of Petroșani

Fabian Arun Panaite, Cosmin Rus, Monica Leba, Andreea Cristina Ionica, Michael Windisch

Subject: Engineering, Control And Systems Engineering Keywords: Environmental Monitoring; Pollutant Analysis; IoT Sensors; Predictive Analytics; Urban Sustainability

Online: 30 July 2024 (09:03:24 CEST)

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Preprint REVIEW | doi:10.20944/preprints202407.1749.v1

Low-Resource Time-to-Digital Converters for Field 4 Programmable Gate Arrays: A Review

Diego Real, David Calvo

Subject: Engineering, Electrical And Electronic Engineering Keywords: Time-to-Digital Converter; Field Programmable Gate Array; Low-resource Time-to-Digital Converters

Online: 22 July 2024 (14:45:36 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.0423.v1

Flight Control Design Based on Nonlinear Dynamic Inversion for Post-Stall Maneuvers

Ciann-Dong Yang, Shun-Yuan Chang

Subject: Engineering, Aerospace Engineering Keywords: nonlinear dynamic inversion; control allocation; thrust vectoring control; high angle-of- attack flight; post-stall maneuver

Online: 7 August 2024 (03:37:09 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0143.v1

ROS2 Communication Security Vulnerability Detection Based on Formal Method

Shuo Yang, Jian Guo, Xue Rui

Subject: Computer Science And Mathematics, Computer Networks And Communications Keywords: Robotic System; ROS2; Communication mechanisms; Security and Safety Analysis; formal method

Online: 2 April 2024 (16:12:24 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202409.1215.v1

A Survey System for Artificial Intelligence-Based Painting Using Generative Adversarial Network Techniques

Ming-Der Jean, Chaoyang Zhang, Xiang Li

Subject: Social Sciences, Cognitive Science Keywords: AI painting software; generative adversarial networks; fuzzy hierarchical analysis; evaluation models

Online: 16 September 2024 (11:39:45 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.2474.v1

Design of Small-Size Lithium-Battery Based Electromagnetic Induction Heating Control System

Yuanjie Liang, Shihao Song, Bocheng Xu, Zhuangzhuang Li, Xuelin Li, Zonglai Mo, and Jun Li

Subject: Engineering, Electrical And Electronic Engineering Keywords: Electromagnetic Induction Heating; Lithium-battery heating; full bridge inverter; temperature control

Online: 31 July 2024 (03:04:54 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202409.1140.v1

New Design Scheme and Application of Fresnel Lens for Broadband Photonics Terahertz Communication

Peng Tian, Yang Han, Weipin Li, XiongWei Yang, MingXu Wang, Jianjun Yu

Subject: Engineering, Telecommunications Keywords: terahertz wireless transmission; plano-convex lens; Fresnel lens; PTFE

Online: 14 September 2024 (11:37:43 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202403.1446.v1

Hardware in the Loop Simulation of Gas Turbines: How Real Time Control System Design Tools Can Be Exploited Also to Generate Fault Cases to Train and Tune Data Based Diagnostic Systems.

Attilio Brighenti, Chiara Brighenti

Subject: Engineering, Mechanical Engineering Keywords: HIL model(s); Dynamic simulation(s); Data-based modelling; Predictive diagnostics; Fault detection and isolation (FDI)

Online: 25 March 2024 (08:30:18 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.0276.v1

Design and Experiment of Taking Plate Control System of Edible Sunflower Harvester

Feng Pan, Jincheng Chen, Hui Zhang, Lin Han, Yuncheng Dong, Bin Li, Chao Ji

Subject: Biology And Life Sciences, Agricultural Science And Agronomy Keywords: edible sunflower; harvester; taking plate control system; trapezoidal acceleration and deceleration control algorithm; field experiment

Online: 5 March 2024 (16:08:04 CET)

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Aiming at the problems of high labor intensity and high cost of manual picking, high loss rate of mechanical picking seeds, low mechanization level and difficult to guarantee the quality of picking plates in the process of picking plates of edible sunflower. Based on the principle of manual plate taking, a plate taking control system for sunflower harvesting table was designed. Through the research and analysis of the principle of taking the plate of the edible sunflower harvesting table. According to the actual operation requirements, the overall scheme of the sunflower plate control system is determined, and the control strategy of imitating artificial low loss harvesting is designed. To reduce the grain loss in the process of taking the plate and improve the control accuracy of the system on the movement speed and displacement of the key components in the process of taking the plate, a trapezoidal acceleration and deceleration control algorithm is designed as the control algorithm of taking the plate. To verify the working performance of the plate control system, with the absolute error, relative error and total loss rate of the harvest as objectives. The bench and field verification experiments were both carried out. The bench experiment showed that the speed error of the plate parts was not more than 0.028 m/s. In the bench experiments of the device, the maximum positioning error was 1.25 mm, the average relative error is only 0.94 %, and the grain loss rate was not more than 2.26 %. It result showed that the system algorithm was reliable, the positioning accuracy was high, and the taking plate operation can be completed well. The field verification experiment showed that the forward speed of the unit was in the range of 0.4~0.8 m/s, and the total loss rate of harvest was less than 5 %. When the forward speed is 0.6 m/s, the minimum harvest loss rate is 2.32 %, and which indicated the control system meets the requirements of sunflower harvesting operation.

Preprint ARTICLE | doi:10.20944/preprints202408.1228.v1

Real-Time Document Collaboration System Using Orchestrated Containers

Daniel Iovescu, Cătălin Tudose

Subject: Computer Science And Mathematics, Computer Science Keywords: collaborative work; design document collaboration software; dependable systems; microservices pattern; cloud computing; orchestrated cloud environment; independent containers; collaborative technologies; distributed system architecture

Online: 19 August 2024 (04:26:57 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201611.0002.v2

Small UAS-Based Wind Feature Identification System Part 1: Integration and Validation

Leopoldo Rodriguez Salazar, Jose A. Cobano, Anibal Ollero

Subject: Engineering, Control And Systems Engineering Keywords: wind prediction; wind estimation; UAS; wind shear; gust; multi-platform integration

Online: 18 January 2017 (09:44:54 CET)

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This paper presents a system for identification of wind features, such as gusts and wind shear. These are of particular interest in the context of energy-efficient navigation of Small Unmanned Aerial Systems (UAS). The proposed system generates real-time wind vector estimates and a novel algorithm to generate wind field predictions. Estimations are based on the integration of an off-the-shelf navigation system and airspeed readings in a so-called direct approach. Wind predictions use atmospheric models to characterize the wind field with different statistical analyses. During the prediction stage, the system is able to incorporate, in a big-data approach, wind measurements from previous flights in order to enhance the approximations. Wind estimates are classified and fitted into a Weibull probability density function. A Genetic Algorithm (GA) is utilized to determine the shaping and scale parameters of the distribution, which are employed to determine the most probable wind speed at a certain position. The system uses this information to characterize a wind shear or a discrete gust and also utilizes a Gaussian Process regression to characterize continuous gusts. The knowledge of the wind features is crucial for computing energy-efficient trajectories with low cost and payload. Therefore, the system provides a solution that does not require any additional sensors. The system architecture presents a modular decentralized approach, in which the main parts of the system are separated in modules and the exchange of information is managed by a communication handler to enhance upgradeability and maintainability. Validation is done providing preliminary results of both simulations and Software-In-The-Loop testing. Telemetry data collected from real flights, performed in the Seville Metropolitan Area in Andalusia (Spain), was used for testing. Results show that wind estimation and predictions can be calculated at 1 Hz and a wind map can be updated at 0.4 Hz. Predictions show a convergence time with a 95% confidence interval of approximately 30 s.

Preprint ARTICLE | doi:10.20944/preprints202407.2277.v1

Investigating School Principals' Burnout: A Cross-Cultural Perspective on Stress, Sustainability, and Organizational Climate

Remus Sibisanu, Stanislav Cseminschi, Andreea Ionica, Monica Leba, Anca Draghici, Yunis Nassar

Subject: Engineering, Other Keywords: stress; burnout; heartrate; organizational climate; fuzzy; high school principals’ wellbeing

Online: 29 July 2024 (09:38:35 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202007.0585.v1

Design & Control of Vehicle Boom Barrier Gate System using Augmented H2 Optimal & H infinity Synthesis Controllers

Mustefa Jibril, Messay Tadese, Tesfabirhan Shoga

Subject: Engineering, Control And Systems Engineering Keywords: Boom barrier gate; H2 optimal; Hinfinity synthesis

Online: 24 July 2020 (13:47:31 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1704.v1

Vision System for the Mars Sample Return Capture, Containment and Return System (CCRS)

Brent Jon Bos, David Donovan, John Capone, Chen Wang, Terra Hardwick, Dylan Bell, Yuqing Zhu, Robert Podgurski, Bashar Rizk, Ireneusz Orlowski, Rachel Edison, David Harvey, Brianna Dizzon, Lindsay Haseltine, Kristoffer Olsen, Chad Sheng, Robert Bousquet, Luan Vo, Georgi Georgiev, Kristen Washington, Michael Singer, Stefan Ioana, Anloc Le, Elena Georgieva, Michael Hackett, Michael Ravine, Michael Caplinger, Phillip Coulter, Erin Percy, Charles Torisky, Jean Lauenstein, Kaitlyn Ryder, Michael Campola, Dillon Johnstone, William J. Thomes, Richard G. Schnurr, John McCloskey, Eugenia DeMarco, Ellen Lee, Calinda Yew, Bo Yang, Mingyu Han, Bartosz Blonski

Subject: Engineering, Aerospace Engineering Keywords: Mars; cameras; sample return; space optics

Online: 26 April 2024 (09:33:12 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.1332.v1

Fault-Tolerant Optimal Consensus Control for Heterogeneous Multi-agent System

Yandong Li, Yongan Liu, Ling Zhu, Zehua Zhang

Subject: Computer Science And Mathematics, Applied Mathematics Keywords: uncrewed aerial vehicle; uncrewed ground vehicle; heterogeneous multi-agent system; actuator failures; consensus; Lyapunov stability theory; optimal method

Online: 16 July 2024 (12:28:05 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201702.0059.v1

Fusing Observational, Satellite Remote Sensing and Air Quality Model Simulated Data to Estimate Spatiotemporal Variations of PM2.5 Exposure in China

Tao Xue, Yixuan Zheng, Guannan Geng, Bo Zheng, Xujia Jiang, Qiang Zhang, Kebin He

Subject: Environmental And Earth Sciences, Environmental Science Keywords: fine particulate matter (PM2.5); aerosol optical depth; community multi-scale air quality (CMAQ) model; data fusion; exposure assessment

Online: 16 February 2017 (08:58:09 CET)

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Preprint ARTICLE | doi:10.20944/preprints202409.0578.v1

Point of Common Connection Voltage Modulated Direct Power Control with Disturbance Observer to Increase of Renewable Energy Acceptance in Power System

Yong Woo Jeong, Woo Young Choi

Subject: Engineering, Electrical And Electronic Engineering Keywords: Grid voltage modulated power control; Point of common connection; Energy storage system; Voltage source inverter; Disturbance observer; Total harmonic distortion

Online: 9 September 2024 (08:00:22 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201703.0106.v1

Decision Optimization for Power Grid Operating Condition with High and Low Voltage Parallel Loops

Dong Yang, Kang Zhao, Hao Tian, Yutian Liu

Subject: Engineering, Electrical And Electronic Engineering Keywords: parallel loop; line switching; complex network theory; GN algorithm; comprehensive evaluation model

Online: 15 March 2017 (18:00:36 CET)

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Preprint ARTICLE | doi:10.20944/preprints202409.0168.v1

Transforming User Experience (UX) Through Artificial Intelligence (AI) in Interactive Media Design

Yingchia Liu, Yang Xu, Runze Song

Subject: Computer Science And Mathematics, Computer Networks And Communications Keywords: Artificial intelligence technology; Digital media interaction design; Generate adversarial network; User experience

Online: 3 September 2024 (11:39:27 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.0154.v1

An OOSEM-Based Design Pattern for Developing AUV Controllers

Cao Duc Sang, Ngo Van He, Ngo Van Hien, Nguyen Trong Khuyen

Subject: Engineering, Marine Engineering Keywords: AUV (Autonomous Underwater Vehicle); OOSEM (Object-Oriented System Engineering Method); MDA (Model-Driven Architecture); real-time UML/SysML; UKF algorithm

Online: 2 July 2024 (02:57:44 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202406.1263.v1

Optimizing Traffic Flow Through Congestion Management at Peshawar Toll Plaza: A Data-Driven Approach

Adil Hussain, Muhammad Afzal, Tariq Tariq

Subject: Computer Science And Mathematics, Analysis Keywords: PTV Vissim; Toll Plaza optimization; Traffic flow; Toll-collecting effectiveness; Data analysis; Vehicle classifications; intelligent traffic management systems

Online: 20 June 2024 (10:46:17 CEST)

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Toll plaza optimization is essential for improving traffic flow and easing congestion on road networks. This study aims to suggest and assess potential optimization solutions for the Peshawar toll plaza, considering variables like traffic volume, toll-collecting effectiveness, and customer facilitation. Different resources are used for data collection, like the National Highway Authority of Pakistan. Physical data is collected from the established Toll Plaza of Peshawar, along with the development of each line. The goal of this study is to suggest and assess potential optimization solutions for the Peshawar toll plaza, considering variables like traffic volume, toll-collecting effectiveness, and customer happiness. The analysis of present traffic patterns, the detection of bottlenecks, and the creation of plans to ease congestion and enhance overall traffic flow are all part of the optimization process. The approaches used in this study include data analysis, simulation, and traffic modeling. PTV VISSIM is software for transportation planning, design, and analysis. The simulations consider various conditions, such as variable traffic volumes, toll collection methods, and lane configurations. When comparing the different optimization strategies, performance indicators like trip time, latency, and queue length are utilized to determine which approach is practical. Waiting time Vs. Existing each lane, etc, is explained. In the end, comparing queue lengths and throughput across different lane scenarios shows that maximizing throughput with existing lanes yields up to 45% improvement with E-tag lanes, 40% with existing E-tag lanes, 38% with E-tag plus additional toll and cash lanes, 32% with three cash lanes, and 28% with two E-tag lanes. Failure to regularly monitor and adjust the existing lane pattern scenario based on traffic patterns can lead to queues being 20% longer. Without proactive evaluation and optimization, there is a potential 63% opportunity for queue length improvement

Preprint ARTICLE | doi:10.20944/preprints202407.0026.v1

A Flexible Wearable Strain Sensor Based on Nano-Silver Modified Laser-Induced Graphene for Monitoring Hand MovementsCitation: To Be Added by Editorial Staff during Production

Mian Zhong, Yao Zou, Hongyun Fan, Shichen Li, Yilin Zhao, Bin Li, Bo Li, Yong Jiang, Xiaoqing Xing, Jiaqing Shen, Chao Zhou

Subject: Physical Sciences, Applied Physics Keywords: LIG; doping modification; silver nanoparticles; flexible wearable strain sensor; single-step in situ

Online: 1 July 2024 (08:09:42 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.0123.v1

One-Step Fabrication of Composite Hydrophobic Electrically Heated Graphene Surface for Anti-Icing

Mian Zhong, Shichen Li, Hongyun Fan, Huazhong Zhang, Yong Jiang, Jinling Luo, Liang Yang

Subject: Chemistry And Materials Science, Surfaces, Coatings And Films Keywords: LIG; Hydrophobic surface; electrically heated materials; one-step fabrication; contact angle

Online: 2 July 2024 (13:28:05 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.2106.v1

Affective Computing Using an Emotion-Perception System for Interactive Experiences with Multi-Sensing Interfaces

Chao-Ming Wang, You-Chieh Lee

Subject: Computer Science And Mathematics, Other Keywords: interpersonal interactions; affective computing; multi-sensing; human-computer interfacing

Online: 29 August 2024 (11:40:57 CEST)

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Affective computing has emerged as a prominent technology in recent years, driven by the increasing demand for machines capable of understanding and interpreting emotions. The COVID-19 pandemic has intensified this need by reducing physical interactions and increasing reliance on digital communication, which often involves complex emotional exchanges. To enhance social interactions by identifying and addressing negative emotions, an interactive emotion-perception system based on multi-sensing interfaces and affective computing has been proposed. Integration of gesture, voice, and brainwave sensors is employed to provide users with a rich sensory experience and immersive environment. Design principles and system development processes are derived from the affinity diagram method and prototype development approach. The proposed system was constructed, and experiments were conducted with 60 participants. Interpersonal interaction scenarios were explored to understand emotional transmission mechanisms, aiming to enhance user satisfaction and positive interpersonal experiences. Data were collected through indirect observation and questionnaires, followed by evaluation and statistical analysis. Findings include: (1) The emotion-perception system enhances positive interpersonal interactions by identifying 36 distinct emotions, with overall user emotions being positive but exhibiting notable individual variations; (2) The system effectively stimulates positive emotions and strengthens interpersonal interactions, with affective computing technology fostering enjoyable emotional resonance and high-quality relationships; (3) A positive correlation was observed between semantic analysis and brainwave metrics of relaxation and concentration, showing increased concentration and enhanced positive emotional interactions during message transitions; and (4) The multi-sensing and affective computing technology provides a pleasant and relaxing emotional journey, with interactions shifting from enthusiasm to comfort, demonstrating the system’s capacity for a satisfying and enjoyable experience.

Preprint ARTICLE | doi:10.20944/preprints202408.2260.v1

Research on the Application of Tbm Advanced Geological Prediction Based on Ellipsoidal Positioning Velocity Analysis

Zhen Gao, Xin Rong, Wei Wang, Bin Huang, Junqiang Liu

Subject: Environmental And Earth Sciences, Geophysics And Geology Keywords: Seismic exploration; Advanced geological forecasting; Velocity analysis; TBM construction tunnel

Online: 30 August 2024 (14:55:50 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.2180.v1

Nonlinear Finite Element Analysis of Bone-Implant Contact in Three Short Dental Implant Models with Varying Osseointegration Percentages

Dawit Bogale Alemayehu, Masahiro Todoh, Song-Jeng Huang

Subject: Engineering, Mechanical Engineering Keywords: Biomechanical; Osseo-integration; Low-density; High-density; Cancellous bone; Short dental implant; Finite element analysis; bone-implant contact

Online: 29 August 2024 (14:26:57 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202406.0345.v1

A Positioning Alarm System for Explosive Impact Debris Protective Suit Based on Accelerometer Array

Jianing Hu, Chaoran Liu, Xucong Wang, Zai Wang, Xin Tong, Fangqi Li, Zhenyu Jin, Xiaoyuan Wang, Lufeng Che, Jing Yu, Defei Yao, Gaofeng Wang, Linxi Dong

Subject: Engineering, Safety, Risk, Reliability And Quality Keywords: Protection suit; debris positioning alarm system; accelerometer array; real-time monitoring

Online: 6 June 2024 (04:57:30 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.1875.v1

Improved Performance of the PMSM Sensorless Control System Based on DTC Strategy and SMC Using Fractional Order and Fractal Dimension Calculus

Marcel Nicola, Claudiu Ionel Nicola, Dan Selișteanu, Cosmin Ionete, Dorin Șendrescu

Subject: Engineering, Control And Systems Engineering Keywords: Direct Torque Control; Fractional Order Calculus; Sliding Mode Control; Equilibrium Optimizer

Online: 29 May 2024 (07:07:06 CEST)

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Starting from the fact that one of the global control strategies of the Permanent Magnet Synchronous Motor (PMSM), namely the Direct Torque Control (DTC) type control strategy, is characterised by the fact that the inner flux and torque control loop usually uses hysteresis ON-OFF type controllers and the oscillations introduced by them have to be cancelled out by the outer speed loop controller (which is usually a PI speed controller and whose performance is good around the global operating points and for relatively small variations of the external parameters and disturbances caused in particular by the load torque variation), while retaining the advantages of the DTC strategy, this paper presents the improvement of the performance of the PMSM sensorless control system using Proportional Integrator (PI), PI Equilibrium Optimizer Algorithm (EOA), Fractional Order (FO) PI, Tilt Integral Derivative (TID) and FO Lead-Lag for constant flux, and Sliding Mode Control (SMC) and FOSMC for variable flux. The performance indicators of the control system are the usual ones: response time, settling time, overshoot, steady-state error and speed ripple, plus another one given by the fractal dimension (FD) of the PMSM rotor speed signal, and the hypothesis that the FD of the controlled signal is higher when the control system provides better performance is verified. The paper also presents the basic equations of the PMSM, based on which the synthesis of integer and fractional controllers, the synthesis of an observer for estimating the PMSM rotor speed, electromagnetic torque and stator flux are presented. The comparison of the performance of the proposed control systems and the demonstration of the parametric robustness are performed by numerical simulations in Matlab/Simulink using Simscape Electrical and Fractional Order Modelling and Control (FOMCON). Real-time control based on an embedded system using a TMS320F28379D controller demonstrates the good performance of the PMSM sensorless control system based on the DTC strategy in a complete hardware-in-the-loop (HIL) implementation.

Preprint ARTICLE | doi:10.20944/preprints201608.0030.v2

Using the Job Burden-Capital Model of Occupational Stress to Predict Depression and Well-Being among Electronic Manufacturing Service Employees in China

Chao Wang, Shuang Li, Tao Li, Shanfa Yu, Junming Dai, Xiaoman Liu, Xiaojun Zhu, Yuqing Ji, Jin Wang

Subject: Social Sciences, Psychology Keywords: occupational stress; job burden-capital model; structural equation model; depression; well-being

Online: 4 August 2016 (12:47:57 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.1217.v1

Demonstration of an In-Flight Entertainment System Using Power-over-Fiber

Joao B. Rosolem, Fabio R. Bassan, Marcelo Prado de Oliveira, Alexandre Barbosa dos Santos, Leonardo Martins Wollinger

Subject: Engineering, Aerospace Engineering Keywords: power over fiber; PoF; in-flight entertainment; IFE; avionics; optical fibers; high optical power

Online: 20 May 2024 (12:37:13 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.2253.v1

Design of Differential Loudspeaker Line Array for Steerable Frequency-Invariant Beamforming

Yankai Zhang, Qian Xiang, Qiaoxi Zhu

Subject: Engineering, Electrical And Electronic Engineering Keywords: Differential loudspeaker arrays; beam steering; frequency-invariant beamforming

Online: 1 September 2024 (16:50:39 CEST)

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Preprint REVIEW | doi:10.20944/preprints202404.0128.v1

Floral nectaries in Leguminosae: structure, diversity, and possible evolution

Andrey Sinjushin

Subject: Biology And Life Sciences, Plant Sciences Keywords: androecium, Fabaceae, monosymmetry, nectar, pollination

Online: 2 April 2024 (10:44:23 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202210.0274.v1

Sliding Mode-based Traction Control System Design for Electric Scooter BLDCM through Field-Oriented Vector Control Approach

Caglar Uyulan, Ersen Arslan

Subject: Engineering, Control And Systems Engineering Keywords: Field Oriented Control (FOC); electric scooter; Traction Motor Control System; Sliding Mode Control

Online: 19 October 2022 (08:27:17 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202312.0624.v1

Design and Implementation of an Effective Motor Control Devices by Improvement Gate Driver Circuit for Pmsm Sensorless Motor Control Application.

Indra Ferdiansyah, Tsuyoshi Hanamoto

Subject: Engineering, Electrical And Electronic Engineering Keywords: sensorless PMSM; gate driver circuit; switching losses; motor control devices; estimation of rotor position

Online: 12 December 2023 (06:05:47 CET)

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Preprint ARTICLE | doi:10.20944/preprints202404.1147.v1

Polarization and Incident Angle Independent Multifunctional and Multiband Tunable THz Metasurface Based on VO₂

Rehmat Iqbal, Cao Jie, Ubaid ur Rahman Qureshi, Zia Ur Rehman, Naveed Jafar

Subject: Engineering, Other Keywords: Metasurface; Terahertz (THz); Polarization Conversion; Absorption; Polarization angle; vanadium dioxide (VO₂)

Online: 17 April 2024 (13:33:12 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202409.0035.v1

An Implementation based on Mask-D3QN of Quadruped Robot Motion for Steam Generator

Biying Xu, Xuehe Zhang, Xuan Yu, Yue Ou, Kuan Zhang, Hegao Cai, Jie Zhao, Jizhuang Fan

Subject: Engineering, Mechanical Engineering Keywords: crawling robot; deep reinforcement learning; motion planning; hierarchical planning

Online: 2 September 2024 (13:13:56 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1672.v1

Design of Digital Twin Cutting Experiment System for Shearer

Bing Miao, Yunwang Li, Yinan Guo

Subject: Engineering, Mining And Mineral Processing Keywords: shearer; similarity theory; Digital Twin; Cutting Experiment System

Online: 26 April 2024 (11:27:57 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202402.1296.v1

Causal Meta-Reinforcement Learning for Multimodal Remote Sensing Data Classification

Wei Zhang, Xuesong Wang, Haoyu Wang, Yuhu Cheng

Subject: Computer Science And Mathematics, Artificial Intelligence And Machine Learning Keywords: Multimodal data; remote sensing; reinforcement learning; meta-learning; causal learning

Online: 22 February 2024 (15:30:22 CET)

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Preprint ARTICLE | doi:10.20944/preprints202405.1157.v1

Advancing Electric Load Forecasting: Leveraging Federated Learning for Distributed, Non-Stationary, and Discontinuous Time Series

Lucas Richter, Steve Lenk, Peter Bretschneider

Subject: Computer Science And Mathematics, Artificial Intelligence And Machine Learning Keywords: Federated Learning; Load Forecasting; Non-Stationary And Discontinous Time Series; Renewable Energy Community; Dynamic Portfolio

Online: 17 May 2024 (11:36:14 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201609.0088.v1

Multi-range Conditional Random Field for Classifying Railway Electrification System Objects

Jaewook Jung, Leihan Chen, Gunho Sohn, Chao Luo, Jong-Un Won

Subject: Engineering, Civil Engineering Keywords: classification; railway; power line; mobile laser scanning data; conditional random field; layout compatibility

Online: 26 September 2016 (09:33:05 CEST)

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Railway has been used as one of the most crucial means of transportation in public mobility and economic development. For efficiently operating railways, the electrification system in railway infrastructure, which supplies electric power to trains, is essential facilities for stable train operation. Due to its important role, the electrification system needs to be rigorously and regularly inspected and managed. This paper presents a supervised learning method to classify Mobile Laser Scanning (MLS) data into ten target classes representing overhead wires, movable brackets and poles, which are recognized key objects in the electrification system. In general, the layout of railway electrification system shows a strong regularity of spatial relations among object classes. The proposed classifier is developed based on Conditional Random Field (CRF), which characterizes not only labeling homogeneity at short range, but also the layout compatibility between different object classes at long range in the probabilistic graphical model. This multi-range CRF model consists of a unary term and three pairwise contextual terms. In order to gain computational efficiency, MLS point clouds is converted into a set of line segments where the labeling process is applied. Support Vector Machine (SVM) is used as a local classifier considering only node features for producing the unary potentials of CRF model. As the short-range pairwise contextual term, Potts model is applied to enforce a local smoothness in short-range graph. While, long-range pairwise potentials are designed to enhance spatial regularities of both horizontal and vertical layouts among railway objects. We formulate two long-range pairwise potentials as the log posterior probability obtained by Naïve Bayes classifier. The directional layout compatibilities are characterized in probability look-up tables which represent co-occurrence rate of spatial relations in horizontal and vertical directions. The likelihood function is formulated by multivariate Gaussian distributions. In the proposed multi-range CRF model, the weight parameters to balance four sub-terms are estimated by applying the Stochastic Gradient Descent (SGD). The results show that the proposed multi-range CRF can effectively classify detailed railway elements, representing the average recall of 97.66% and the average precision of 97.07% for all classes.

Preprint ARTICLE | doi:10.20944/preprints201701.0033.v1

Establish and Apply a Safe and Convenient Pseudovirus-Based Assay to Detect Neutralizing Antibodies against Influenza A (H7N9) Virus

Li Zhang, Jing Lu, Jingxing Li, Rong Tang, Haiyan Peng, Fanyue Meng, Yuemei Hu

Subject: Biology And Life Sciences, Virology Keywords: H7N9 avian influenza; pseudovirus; neutralization assay; relative luminescence units (RLU)

Online: 6 January 2017 (10:21:52 CET)

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Preprint ARTICLE | doi:10.20944/preprints202408.0336.v1

Steady-state Fault Propagation Characteristics and Fault Isolation in Cascade Electro-hydraulic Control System

Yang Zhang, Rulin Zhou, Lingyu Meng, Jian Shi, Kaixian Ba

Subject: Engineering, Mechanical Engineering Keywords: Fault Diagnosis; Electro-hydraulic Control System; Fault Propagation Characteristics; Turbofan engine

Online: 6 August 2024 (08:27:05 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.0188.v1

Bioinspired Prosumer. Interaction of Bioinspired Design Methods in the Prosumer Scope

Ignacio López-Forniés, Laura Asión-Suñer, Alba Sarvisé-Biec

Subject: Engineering, Other Keywords: Bioinspired Design; Design methods interaction; Prosumer; Maker movement; Prototyping; Domestic fabrication

Online: 2 July 2024 (10:06:16 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.0422.v1

Levitating Control System of Maglev Ruler Based on Active Disturbance Rejection Controller

Jiyuan Sun, Gengyun Tian, Zhaofeng Chen, Pin Li, Chunlin Tian, Zhenxiong Zhou

Subject: Engineering, Chemical Engineering Keywords: maglev; levitating control; active disturbance rejection control; precision detection

Online: 7 August 2024 (03:34:06 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.2092.v1

Design and On-Orbit Performance of Ku-Band Phase-Array SAR Payload System

Wei Yan, Xiaomin Tan, Jiang Wu, Mingze Yuan, Hongxing Dang, Wujun Chang

Subject: Engineering, Aerospace Engineering Keywords: Ku band; SAR system; payload; Taijing-4(03); on-orbit; application; micro-nano; satellite

Online: 29 August 2024 (07:14:22 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202309.2116.v1

Hydrodynamic Design and Array System Study of a New Floating Wave Energy Device

Yu Zhang, Dongqin Li

Subject: Engineering, Marine Engineering Keywords: Wave power generation; Oscillating float; Computational Fluid Dynamics; Array

Online: 30 September 2023 (07:55:14 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201611.0097.v1

Structural Equation Model into Interaction Mechanism between Forest Industry and Ecology with Environmental Mediator Introduced

Bing Liao, Zhiguang Zhang, Chunxiang Liu, Yuanzheng Wu

Subject: Business, Economics And Management, Economics Keywords: forest industry and ecology; environmental capacity; interaction mechanism; SEM; PSIR

Online: 18 November 2016 (10:01:42 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.0054.v1

Research on Fault Detection by Flow Sequence Algorithm with Deep Learning Model for Industrial Internet of Things

Dongfeng Lei, Liang Zhao, Dengfeng Chen

Subject: Engineering, Control And Systems Engineering Keywords: Industrial Internet of Things; Deep learning; Subsequence classification; Fault diagnosis

Online: 1 March 2024 (14:05:52 CET)

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Preprint ARTICLE | doi:10.20944/preprints202406.0123.v1

Manual Dexterity and Hand Grip Strength Modifications After Application of Transcranial Static Magnetic Field Stimulation (tSMS) Over the Primary Motor Cortex (M1) in Healthy Subjects: A Triple-Blind, Randomized Clinical Trial

Víctor Navarro-López, María Carratalá-Tejada, Antonio Oliviero, Diego Fernández Vázquez, Manuel Del-Valle-Gratacós, Samuel Jiménez Jiménez, Francisco Molina-Rueda

Subject: Medicine And Pharmacology, Neuroscience And Neurology Keywords: Manual Dexterity; Motor Cortex; Non-Invasive Brain Stimulation (NIBS); Transcranial Static Magnetic Field Stimulation (tSMS)

Online: 4 June 2024 (08:20:51 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201612.0040.v1

Design of Octagonal Fractal Array Antenna for Side Lobe Reduction with Morse-Thue Fractal Density Tapering Technique

V. A. Sankar Ponnapalli, V. Y. Jayasree Pappu

Subject: Engineering, Electrical And Electronic Engineering Keywords: fractal array antenna; density tapering; side lobe level

Online: 7 December 2016 (11:14:31 CET)

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Preprint ARTICLE | doi:10.20944/preprints201701.0102.v1

Facial Expression Recognition with Fusion Features Extracted from Salient Facial Areas

Yanpeng Liu, Yibin Li, Xin Ma, Rui Song

Subject: Computer Science And Mathematics, Computer Science Keywords: facial expression recognition; fusion features; salient facial areas; hand-crafted features; feature correction

Online: 24 January 2017 (03:28:51 CET)

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Preprint ARTICLE | doi:10.20944/preprints202408.1291.v1

Development of Smallpox Antibody Testing and Surveillance Following Smallpox Vaccination in the Republic of Korea

Hwachul Shin, SangEun Lee, Myung-Min Choi, Hwajung Yi, Yoon-Seok Chung

Subject: Public Health And Healthcare, Public Health And Health Services Keywords: smallpox; Vaccinia virus; smallpox vaccine; antibody titer; ELISA; bioterrorism

Online: 20 August 2024 (04:55:15 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202409.1013.v1

Electromagnetic Imaging for Breathing Monitoring

Ivan Veniaminovich Vassilyev, Zhassulan Korabayevich Mendakulov

Subject: Public Health And Healthcare, Public Health And Health Services Keywords: medical imaging; image reconstruction algorithms; electromagnetic sensors for physiological monitoring; respiratory system; disease localization; microwave imaging techniques; electro-magnetic medical imaging and sensing (EMIS)

Online: 13 September 2024 (03:01:56 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201610.0075.v1

EEG Signal Recognition Based on Wavelet Transform and ACCLN Network

Xuebin Qin, Jun Deng, Mei Wang, Yizhe Zhang, Pai Wang

Subject: Computer Science And Mathematics, Signal Processing Keywords: BCI; recognition; feature extraction; ACCLN network; RBF network

Online: 19 October 2016 (10:09:19 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201809.0516.v1

Design, Simulation and Hardware Implementation of Shunt Hybrid Compensator using Synchronous Rotating Reference Frame Based Control Technique

Balasubramanian R, Parkavi kathirvelu K, Sankaran R, Rengarajan Amirtharajan

Subject: Engineering, Electrical And Electronic Engineering Keywords: Harmonics; Hybrid power filter; Active power filter; Power quality; Total harmonic distortion.

Online: 26 September 2018 (14:26:22 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.1088.v1

Molecular Insight into Water/Methane Occurrence Characteristics within Nanoporous Composite Media in Deep Shale Formations

Xuefeng Yang, Jiawei Liu, Lieyan Cao, Jian Zhang, Shengxian Zhao, Qin Yang, Qiujie Chen, Zishuo Qu, Jiawei Liu

Subject: Engineering, Other Keywords: Methane; Water; Adsorption; Deep shale; Nanopore; Molecular simulation

Online: 20 August 2024 (03:47:55 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.1310.v1

Large-Scale Solar Potential Analysis as a Use Case of Urban Digital Twins

Evgeny Shirinyan, Dessislava Petrova-Antonova

Subject: Engineering, Architecture, Building And Construction Keywords: 3D city model; urban digital twin; solar radiation analysis; CAD tool application at city scale

Online: 20 May 2024 (20:16:53 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201702.0074.v1

v-Mapper: An Application-Aware Resource Consolidation Scheme for Cloud Data Centres

Aaqif Afzaal Abbasi, Hai Jin

Subject: Computer Science And Mathematics, Information Systems Keywords: network; systems; cloud computing; data centre; performance; software-defined; virtual machine; scheduling; admission control; application-aware;

Online: 20 February 2017 (04:56:24 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.0747.v1

Remote Object Tracking Based on Optical Flow Reconstruction of Motion-Group Parameters

Simeon Karpuzov, Georgi Hristov Petkov, Silvia Ilieva, Alexander Georgiev Petkov, Stiliyan Nikolov Kalitzin

Subject: Computer Science And Mathematics, Computer Vision And Graphics Keywords: remote tracking; velocity flow reconstruction; target motion recognition

Online: 13 March 2024 (17:04:31 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.0766.v1

Assessing Reliability, Resilience and Vulnerability of Water Supply from SuDS

Andrea Sulis, Martina Altana, Gianfranco Sanna

Subject: Engineering, Safety, Risk, Reliability And Quality Keywords: Stormwater flooding; Sustainable Drainage Systems (SuDS); Sustainable city; Urbanization; MODSIM; Supply indicators

Online: 13 March 2024 (07:16:38 CET)

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Preprint ARTICLE | doi:10.20944/preprints202407.0234.v1

Asymmetric Convolution Guided Multipath Fusion Real-Time Semantic Segmentation Networks

Jie Liu, Bing Zhao, Ming Tian

Subject: Computer Science And Mathematics, Artificial Intelligence And Machine Learning Keywords: Semantic segmentation; Asymmetric convolution; Feature misalignment; High-level semantic information

Online: 3 July 2024 (00:20:55 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.1633.v1

A hybrid Fuzzy Evaluation Method for Quantitative Risk Classification of Barrier Lake Based on an AHP Method Extended by D Numbers

Qigui Yang, Fugen Yan, Yaojun Cai, Yuesheng Luan, Duliangzi Yi, Haitao Liu, Wanli Dai, Zhongtian Zou

Subject: Engineering, Civil Engineering Keywords: barrier lake; risk classification; weight; D-AHP; short window; information acquisition

Online: 22 August 2024 (14:47:46 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.1772.v1

Aloe Vera as a Printed Coating to Demote the Wear of Textiles

Michail Karypidis, Amalia Stalika, Maria Zarkogianni, Apostolos Korlos, Eleftherios G. Andriotis

Subject: Chemistry And Materials Science, Surfaces, Coatings And Films Keywords: aloe vera printing; aloe vera coating; fabric wear; green fashion

Online: 23 July 2024 (10:04:53 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.0736.v1

Dimensional Accuracy and Mechanical Characterization of Inconel 625 components in Atomic Diffusion Additive Manufacturing

Tobias Rosnitschek, Catharina Stierle, Christian Orgeldinger, Armin Seynstahl, Bettina Alber-Laukant, Stephan Tremmel

Subject: Engineering, Mechanical Engineering Keywords: ADAM; material extrusion; metal additive manufacturing; infill structures

Online: 12 May 2024 (07:44:41 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202402.1098.v1

Optimizing Stainless Steel Bearings: The Impact of Low-Temperature Forming on Bearing Life

Alexander Heinrich Bodewig, Florian Pape, Gerhard Poll

Subject: Engineering, Mechanical Engineering Keywords: bearings; bearing life; cold forming; stainless steel

Online: 20 February 2024 (06:22:04 CET)

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Preprint ARTICLE | doi:10.20944/preprints202407.1992.v1

Optimization of Airfoils for the Design of Long Endurance Aircrafts Using Deep Learning Models and Metaheuristics Algorithms

Jose Gabriel Quijada Pioquinto, Valentin Shakhov, Evgenii Minaev, Evgenii Kurkin, Oleg Lukyanov

Subject: Engineering, Aerospace Engineering Keywords: airfoil optimization; OpenFOAM; deep learning models; metaheuristics algorithms; method CST

Online: 25 July 2024 (12:58:42 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202403.1352.v1

Optimal Design and Development of Magnetic Field Detection Sensor for AC Power Cable

Yong Liu, Yuepeng Xin, Boxue Du, Xingwang Huang, Jingang Su

Subject: Engineering, Electrical And Electronic Engineering Keywords: Single-core AC high-voltage cable; Magnetic field sensor; Optimal design; Magnetic core; Coil; Amplifying circuit

Online: 22 March 2024 (06:35:45 CET)

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Preprint ARTICLE | doi:10.20944/preprints202405.0180.v1

The Distal Promoter of the B438L Gene of African Swine Fever Virus Is Responsible for the mRNA Transcription of the B438L and the Alternatively Spliced B169L

Hongwei Cao, Hao Deng, Yanjin Wang, Diqiu Liu, Lian-Feng Li, Meilin Li, Dingkun Peng, Jingwen Dai, Jiaqi Li, Hua-Ji Qiu, Su Li

Subject: Biology And Life Sciences, Animal Science, Veterinary Science And Zoology Keywords: African swine fever virus; B438L promoter; transcription initiation; B169L protein

Online: 3 May 2024 (09:46:58 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.1887.v1

Spatial Augmented Reality for Expanding the Reach of Individuals with Tremor beyond Their Physical Limits

Kai Wang, Meng Jing Wu, Zhi Sun, Qun Huang

Subject: Computer Science And Mathematics, Computer Science Keywords: spatial augmented reality; tremor; eye-tracking; internet of things; assistive technology

Online: 28 May 2024 (15:35:21 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201612.0029.v1

An Optimized Energy Management Strategy for Preheating Vehicle-Mounted Li-Ion Batteries at Subzero Temperatures

Tao Zhu, Haitao Min, Yuanbin Yu, Zhongmin Zhao, Tao Xu, Yang Chen, Xinyong Li

Subject: Engineering, Automotive Engineering Keywords: electric vehicle; battery heat generation; battery degradation; vehicle operation cost; preheating target temperature; heating system

Online: 6 December 2016 (07:46:46 CET)

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Preprint ARTICLE | doi:10.20944/preprints202408.0656.v1

Artificial Cultivation of Aquatic Plants Promotes Nitrogen Transformation and Key Functional Genes in Agricultural Drainage Ditch Sediments in the Yellow River Irrigation Area, China

Yu Hong, Ziqi He, Ruliang Liu, Wenhua Xiang, Pifeng Lei, Xi Fang

Subject: Environmental And Earth Sciences, Ecology Keywords: denitrification; DNRA; functional gene of nitrogen transformation; rhizosphere sediments; Phragmites australis; Typha orientalis

Online: 12 August 2024 (03:16:00 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202409.0622.v1

A Novel Energy Replenishment Algorithm to Increase Network performance of Rechargeable Wireless Sensor Network

Tariq Tariq, Zhu Wei, Kashif Naseer Qureshi, Muhammad Uzair, Adil Hussain, Muhammad Asif Khosa

Subject: Computer Science And Mathematics, Computer Networks And Communications Keywords: Wireless Recharging; Mobile Charger; Sensor Network; WSN

Online: 9 September 2024 (09:03:21 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202403.1017.v1

Sampling Audit Evidence Using a Naive Bayes Classifier

Guang-Yih Sheu ---, Nai-Ru Liu

Subject: Computer Science And Mathematics, Artificial Intelligence And Machine Learning Keywords: Sampling; audit evidence; representativeness index; Naive Bayes classifier

Online: 18 March 2024 (10:37:21 CET)

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Preprint ARTICLE | doi:10.20944/preprints202402.1256.v1

Design and Analysis Models with PID and PID Fuzzy Controllers for Six-phase Drive

Roma Rinkeviciene, Brone Mitkiene

Subject: Engineering, Electrical And Electronic Engineering Keywords: six-phase motor; field-oriented control; fuzzy controllers; model; simulation; transients

Online: 22 February 2024 (09:14:43 CET)

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Preprint ARTICLE | doi:10.20944/preprints202402.1326.v1

Design and Implementation of a MIMO Integral Resonant Control for Active Vibration Control of Pedestrian Structures

Emiliano Pereira, Xidong Wang, Iván M. Díaz, Sumeet S. Aphale

Subject: Engineering, Control And Systems Engineering Keywords: Active Vibration Control; Human-Induced Vibrations; Integral Resonant Control

Online: 22 February 2024 (16:17:25 CET)

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Preprint CONCEPT PAPER | doi:10.20944/preprints202204.0129.v1

Digital Design of Programmable Image Processor for FPGA

Abdullah Khan

Subject: Computer Science And Mathematics, Artificial Intelligence And Machine Learning Keywords: Digital Design; Digital Architecture; Image Processing; Machine learning; FPGA; Dedicated Design; Image Processor

Online: 14 April 2022 (05:09:47 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201701.0030.v2

Nearly Zero Energy Standard for Non-Residential Buildings with High Energy Demands—An Empirical Case Study Using the State Related Properties of Bavaria

Michael Keltsch, Werner Lang, Thomas Auer

Subject: Engineering, Civil Engineering Keywords: Energy Performance of Buildings Directive (EPBD 2010); nearly zero energy standard; non-residential buildings; highly technically installed buildings; energy balance

Online: 9 January 2017 (10:35:18 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.1861.v1

Stability Analysis and Dynamic Simulations for Gravity Gradient of a Large Rigid Space Structure

Chenglei Tang, Jialiang Sun, Dongping Jin

Subject: Engineering, Aerospace Engineering Keywords: Stability analysis; Gravity gradient; Large rigid space structure; Orbit dynamics; Natural coordinate formulation

Online: 29 March 2024 (13:45:30 CET)

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Preprint ARTICLE | doi:10.20944/preprints202409.0732.v1

Optimizing the Scheduling of Teaching Activities in a Faculty

Francis Patrick Diallo, Cătălin Tudose

Subject: Computer Science And Mathematics, Applied Mathematics Keywords: automatic timetable generation; faculty scheduling; metaheuristics algorithms; resource utilization; scheduling conflicts; scalability; Timefold

Online: 10 September 2024 (10:04:27 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.0935.v1

Fault-Tolerant Model Predictive Control Applied of a Sewer Network

Antonio Cembellín, María J. Fuente, Pastora Vega, Mario Francisco

Subject: Engineering, Control And Systems Engineering Keywords: Fault Detection and Diagnosis; Fault-Tolerant Control; Model Predictive Control; sewer systems

Online: 14 May 2024 (10:42:15 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.0009.v1

Algorithm Improvement for Mobile Event Detection with Intelligent Tunnel Robots

Li WAN, Zhenjiang LI, Changan ZHANG, Guangyong CHEN, Panming ZHAO, Kewei WU

Subject: Engineering, Transportation Science And Technology Keywords: YOLOv9 + DeepSORT; Edge Computing; Mobile Event Detection; Smart Tunnels

Online: 1 August 2024 (11:11:29 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202406.1604.v1

Development of Ballistic Protection Soft Panels According to Regulatory Documents

Dana Barkane, Marianna Grecka, Dana Almli, Viktorija Mecnika, Inese Ziemele

Subject: Engineering, Safety, Risk, Reliability And Quality Keywords: Ballistic protection vests; soft panels; body armor; design; NIJ standards

Online: 24 June 2024 (08:43:54 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.0103.v1

Carbon Footprint Optimization with Data Resolution Conversion via Kalman Filter for Smart Energy Hub

Mohammed Mahmoud Khattab, Ahmed Abdelrahim, Eman Youssef, Mostafa Saad Hamad, Rania Elmanfaloty

Subject: Engineering, Control And Systems Engineering Keywords: Smart energy hub; carbon footprin; , dynamic pricing; Kalman filter

Online: 1 August 2024 (17:03:13 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0081.v1

Error Model of the Measurement Chain Containing the Discrete Wavelet Transform Algorithm

Marian Kampik, Jerzy Roj, Łukasz Dróżdż

Subject: Computer Science And Mathematics, Signal Processing Keywords: measurement chain error model; uncertainty estimation; discrete wavelet transform

Online: 2 April 2024 (02:27:20 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201701.0010.v1

Synergistic Effect of Coadministration of Haemophilus influenzae and Neisseria meningitidis Vaccines on Immune Responses to Meningitis in Mouse Model

Randa H. Ali, Nourtan F. Abdeltawab, Osama A. Hady, Magdy A. Amin

Subject: Medicine And Pharmacology, Neuroscience And Neurology Keywords: Haemophilus influenza; Neisseria meningitidis; meningitis; vaccine efficacy evaluation; immunization schedule.

Online: 2 January 2017 (18:14:59 CET)

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Preprint ARTICLE | doi:10.20944/preprints201702.0078.v1

Resonant Rectifier ICs for Piezoelectric Energy Harvesting Using Low-voltage Drop Diode Equivalents

Amad Ud Din, Seneke Chamith Chandrathna, Jong-Wook Lee

Subject: Engineering, Energy And Fuel Technology Keywords: AC-DC converters; energy harvesting; piezoelectric; rectifier

Online: 20 February 2017 (18:23:13 CET)

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Preprint ARTICLE | doi:10.20944/preprints202408.0202.v1

A Method for Recognition and Coordinate Reference of Autono-Mous Underwater Vehicle to Inspected Objects of Industrial Sub-Sea Structures Using Stereo Images

Valery Bobkov, Alexey Kudryashov

Subject: Computer Science And Mathematics, Computer Vision And Graphics Keywords: autonomous underwater vehicle (AUV); subsea production systems (SPS); computer vision; stereo; visual navigation

Online: 6 August 2024 (03:44:04 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.1729.v1

Immunogenicity Persistence of Different Immunization Regimens of Rabies Vaccine in the 10–60 Years Age Group: a Follow-up Report Based on Phase III Clinical Trial

Yunpeng Wang, Zhiang Wu, Jia Li, Shouchun Cao, Leitai Shi, Danhua Zhao, Zhaojun Mo, Haiyan Liang, Xiaohong Wu

Subject: Biology And Life Sciences, Immunology And Microbiology Keywords: four-dose immunization regimen; five-dose immunization regimen; immunogenicity persistence; rabies; vaccine

Online: 23 August 2024 (12:08:46 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1780.v1

Design and Investigation of Hybrid Microfluidic Micromixer

Muhammad Waqas, Giedrius Janusas, Vytenis Naginevičius, Arvydas Palevicius

Subject: Engineering, Mechanical Engineering Keywords: Micro-mixing; Acoustic streaming; Acoustofluidics; Microfluidics; Mixing index

Online: 27 April 2024 (10:16:01 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.0933.v1

Study on Sustainable Lightweight Design for Ming-Style Round-Backed Armchair with Laminated Bamboo Lumber Based on Finite Element Method

Jinglong Li, Rosalam Che Me, Qisen Zhu

Subject: Engineering, Industrial And Manufacturing Engineering Keywords: finite element method; laminated bamboo lumber; structure optimization design; Chinese Ming dynasty armchair; sustainable design

Online: 13 August 2024 (14:16:40 CEST)

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Ming-style round-backed armchairs as a classic Chinese chair design are renowned for the blend of ergonomics, practicality, and elegance. Although the Chinese armchair furniture industry has made strides in sustainability, there is still a need for further improvements in material selection, manufacturing processes, and supply chain management to fully support the development of sustainable furniture. Laminated bamboo lumber as new sustainable materials are becoming a popular option for furniture designers in the era of "sustainable design". This research aims to investigate the feasibility and application of laminated bamboo lumber in the design of Chinese armchair furniture and proposes innovative ideas for optimizing the armchair's design. First, an empirical study was conducted to comprehensively understand the classification of Ming-style round-backed armchairs’ structure to develop a 3D model. Secondly, an experimental research method was then employed to explore the parameters of laminated bamboo lumber for future studies. Additionally, a validation experiment was conducted to compare real-world scenarios with simulations using finite element analysis in Ansys. Finally, finite element analysis was used to test the feasibility and application of laminated bamboo lumber in furniture design, focusing on the material’s mechanical properties. Results indicated that laminated bamboo lumber has excellent mechanical properties as furniture design materials, subsequently, using the optimized results, the use of 0.6319 kg of steel was successfully reduced by 23.68% to ensure the armchair’s stability. This provides a reference for the future compter-assist and standardized innovative design of Chinese armchair. By incorporating compter-assist design and lightweight optimization, it is possible to save materials and make more efficient use of resources, thereby contributing to sustainable development goals in the field of furniture design.

Preprint ARTICLE | doi:10.20944/preprints202406.1443.v1

Bayesian Modelling of Travel Times on the Example of Food Delivery: Part 2 - Model Creation and Handling Uncertainty

Jan Pomykacz, Justyna Gibas, Jerzy Baranowski

Subject: Engineering, Control And Systems Engineering Keywords: online food delivery (OFD); delivery time estimation; Bayesian inference; generalized linear models

Online: 20 June 2024 (14:28:15 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.1924.v1

Solid State Additive Manufacturing of Thermoset Composites

Bo Hong, Kaifeng Wang, Yang Li, Shuhan Ren, Peihua Gu

Subject: Engineering, Industrial And Manufacturing Engineering Keywords: Cold spray; Additive manufacturing; Thermosets

Online: 24 July 2024 (12:51:47 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1017.v1

A Hardware Security Protection Method for Conditional Branches of Embedded Systems

Qiang Hao, Dongdong Xu, Yusen Qin, Ruyin Li, Zongxuan Zhang, Yunyan You, Xiang Wang

Subject: Computer Science And Mathematics, Security Systems Keywords: embedded system; branch prediction unit; conditional branch; jump address; jump direction

Online: 16 April 2024 (10:51:30 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.1397.v1

Reinforcement Learning-based Network Dismantling by Targeting Maximum Degree Nodes in the Giant Connected Component

Shixuan Liu, Tianle Pu, Li Zeng, Yunfei Wang, Haoxiang Cheng, Zhong Liu

Subject: Computer Science And Mathematics, Artificial Intelligence And Machine Learning Keywords: Complex Networks; Network Dismantling; Graph Representation Learning; Reinforcement Learning

Online: 20 August 2024 (09:25:05 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202403.0955.v1

Mechatronic and Robotic Systems Utilizing Pneumatic Artificial Muscles as Actuators

Željko Šitum, Juraj Benić, Mihael Cipek

Subject: Engineering, Control And Systems Engineering Keywords: soft robotics; mechatronic system; PAMs; control; design

Online: 18 March 2024 (08:38:40 CET)

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Preprint ARTICLE | doi:10.20944/preprints202406.0400.v1

Development of an Adaptive Fuzzy Integral-Derivative Line-of-Sight Guidance Law for Bathymetric LiDAR Onboard USV

Guoqing Zhou, Jinhuang Wu, Ke Gao, Naihui Song, Guoshuai Jia, Xiang Zhou, Jiasheng Xu, Xia Wang

Subject: Engineering, Marine Engineering Keywords: Line-of-sight guidance law; Unmanned surface vessel; Path-tracking; Fuzzy control; Heading control

Online: 7 June 2024 (02:56:54 CEST)

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