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9th International Technical Conference on Frontiers of Hydraulic and Civil engineering Technology, HCET 2024

作者： Victoriano, Jhonette Kelly Andaya, Bea-Ann S. Duran, Jeffrey Z. Engineering Program School of Advanced Studies Saint Louis University Baguio City2600 Philippines Mechanical and Mechatronics Engineering Department School of Engineering and Architecture Saint Louis University Baguio City2600 Philippines

ISBN: (纸本)9781643685595

The increasing amount of waste in a limited space creates a problematic scenario, particularly in urban areas. Thus, methods of diverting waste wherever possible have become a trend, such as the utilization of refuse-derived fuel (RDF) for alternative energy. In this study, residual wastes were characterized and analyzed for the energy potential it could provide for Baguio City. The majority of the waste composition comprises plastics (35.63%) and paper (44.83%). The association of heating value to moisture was found to have a similar trend with other related studies. Finally, the performance parameters of the produced RDF patterned from Baguio City WACS were measured, where the HV (12.673 MJ/kg), moisture (2.414%), ash (4.757%), and sulfur (0.215%), satisfy the condition of RDF 3 based on ASTM standards. The conducted study may be used as a pilot test for the waste-to-energy scheme, especially since Baguio city has no established WtE system in place to date. © 2024 The Authors.

关键词： Municipal solid waste

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Feasibility Study of Finger Interface for Miniature Surgical Instruments

Feasibility Study of Finger Interface for Miniature Surgical...

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Telepresence, IEEE Conference on

作者： Serin Cha Sebin Kim Seok Chang Ryu BioRobotics Laboratory Department of Mechanical and Biomedical Engineering Graduate Program in Smart Factory Ewha Womans University Seoul South Korea BioRobotics Laboratory Department of Mechanical and Biomedical Engineering Ewha Womans University Department of Mechanical and Biomedical Engineering BioRobotics Laboratory Ewha Womans University

ISBN: (数字)9798331528249

ISBN: (纸本)9798331528256

This paper presents a study on the design of a finger interface to improve the teleoperation of a miniaturized surgical instrument with a bendable distal section. A unique design principle employing the kinematic similarity between the human motion and the follower robot has been proposed for such instruments, which may result in embodied teleoperation, enhancing the overall telepresence experience. According to the principle, a design for an index finger interface was proposed, consisting of a sub-unit measuring finger motion and a handle. When the interface is connected to a robotic platform, it can control the entire tool motion in two separate ways: distal bending by the sub-unit and overall tool motion by the handle. A human subject test was conducted for trajectory-following tasks in a virtual environment, and their performance score was quantified for analysis of the learning curve. Based on the satisfactory learning rate of 75.78% for all nine subjects, the proposed finger interface could be a promising interface for a miniature surgical instrument with a long bendable section at the distal end.

关键词： Telepresence Instruments Fingers Virtual environments Kinematics Bending Motion measurement Robots

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Intelligent Sustainable Robot for Efficient Marine Environment Monitoring using Li-Fi Technology 17

Intelligent Sustainable Robot for Efficient Marine Environme...

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17th International Conference on Developments in eSystems engineering, DeSE 2024

作者： Fteiha, Bara Samer, Hala Almazrouei, Fatima Mohamed, Shouq Al-Zubaidi, Sultanah Riaz, Fahid Almajali, Eqab Hussain, Abir Jafar Yousaf, Jawad Electrical Computer and Biomedical Engineering Department Abu Dhabi University Abu Dhabi United Arab Emirates Mechanical Engineering Department Abu Dhabi University Abu Dhabi United Arab Emirates Department of Electrical Engineering University of Sharjah Sharjah United Arab Emirates

ISBN: (纸本)9798350368697

This study presents the design and development of a light fidelity (Li-Fi) technology-based smart rover for sustainable monitoring of marine environments. A rover equipped with Li-Fi transmitters, receivers, and environmental monitoring sensors (pH and temperature) is designed for underwater navigation and environmental data collection. Data transmission between the rover (transmitter) and a receiver is achieved by aligning a laser and a photo-resistor in a direct line-of-sight configuration. The smart-designed rover has 6 degrees of freedom (DoF) movement capabilities, allowing it to continuously and effectively gather important marine environmental data using integrated sensors. The rover’s movements are controlled through an externally designed mobile application, which enhances operational flexibility. This application also offers real-time sensor data visualization, facilitating comprehensive data analysis and monitoring. The performance of the realized rover was tested in different environments using a commercial pool setup. The recorded readings of pH levels and temperature were in good agreement with the change in the water quality. Integrating Li-Fi technology into marine environment monitoring offers significant potential for revolutionizing underwater communication and advancing environmental sustainability. © 2024 IEEE.

关键词： Environmental monitoring

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High-fidelity and clean nanotransfer lithography using structure-embedded and electrostatic-adhesive carriers

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Microsystems & Nanoengineering 2023年第1期9卷 253-261页

作者： Zhuofei Gan Jingxuan Cai Zhao Sun Liyang Chen Chuying Sun Junyi Yu Zeyu Liang Siyi Min Fei Han Yu Liu Xing Cheng Shuhui Yu Dehu Cui Wen-Di Li Department of Mechanical Engineering University of Hong KongHong KongChina School of Microelectronics Southern University of Science and TechnologyShenzhenChina School of Biomedical Engineering Sun Yat-sen UniversityGuangzhouChina The Shenzhen Institute of Advanced Electronic Materials Shenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhenChina Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhenChina

Metallic nanostructures are becoming increasingly important for both fundamental research and practical *** emerging applications employing metallic nanostructures often involve unconventional substrates that are flexible or nonplanar,making direct lithographic fabrication very *** alternative approach is to transfer prefabricated structures from a conventional substrate;however,it is still challenging to maintain high fidelity and a high yield in the transfer *** this paper,we propose a high-fidelity,clean nanotransfer lithography method that addresses the above challenges by employing a polyvinyl acetate(PVA)film as the transferring carrier and promoting electrostatic adhesion through triboelectric *** PVA film embeds the transferred metallic nanostructures and maintains their spacing with a remarkably low variation of<1%.When separating the PVA film from the donor substrate,electrostatic charges are generated due to triboelectric charging and facilitate adhesion to the receiver substrate,resulting in a high large-area transfer yield of up to 99.93%.We successfully transferred the metallic structures of a variety of materials(Au,Cu,Pd,etc.)with different geometries with a<50-nm spacing,high aspect ratio(>2),and complex 3D ***,the thin and flexible carrier film enables transfer on highly curved surfaces,such as a single-mode optical fiber with a curvature radius of 62.5μ*** this strategy,we demonstrate the transfer of metallic nanostructures for a compact spectrometer with Cu nanogratings transferred on a convex lens and for surface-enhanced Raman spectroscopy(SERS)characterization on graphene with reliable responsiveness.

关键词： transfer transferred film

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Hysteresis Effect of Tangential Force Field on Cell Deformation on Micro-striped Topography: Behavior of Cell Migrating between Different Pattern Compartments 13

Hysteresis Effect of Tangential Force Field on Cell Deformat...

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13th International Multi-Conference on Complexity, Informatics and Cybernetics, IMCIC 2022

作者： Hashimoto, Shigehiro Sekine, Wataru Yonezawa, Hiroki Endo, Yuji Biomedical Engineering Department of Mechanical Engineering Kogakuin University Tokyo163-8677 Japan Biomedical Engineering Systems Design Kogakuin University Tokyo163-8677 Japan Biomedical Engineering Mechanical Engineering Kogakuin University Tokyo163-8677 Japan

ISBN: (纸本)9781950492619

The hysteresis effect of tangential force field on deformation of a cell has been studied in relation to the behavior of the cell migrating to different topography pattern compartments in vitro. The stripe-pattern ridges (0.7 μm height, 3 μm width, and 3 μm interval) was made on the surface of the scaffold plate. Variation was made on the angle between the longitudinal direction of the ridge and the direction of the tangential force by centrifuge: 0 degrees, 45 degrees, and 90 degrees. Myoblast (C2C12: mouse myoblast cell line) was used in the experiment. After the centrifugation of 50 G for 5 hours, the two-dimensional projected area (S) of each cell has been tracked by the time-lapse microscope images for 48 hours. The experimental results show that the cell area S tended to shrink and stabilize as a cell migrated into the striped compartment of surface topography parallel to the tangential force field. The variation in the cell area S was greater in the surface topography compartment with the diagonal stripes with respect to the tangential force field. These reactions of the cells remained for 30 hours after the stimulation was stopped. © by the International Institute of Informatics and Systemics.

关键词： Cell culture

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Bidirectional rotating direct-current triboelectric nanogenerator with self-adaptive mechanical switching for harvesting reciprocating motion

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International Journal of Extreme Manufacturing 2024年第4期6卷 324-335页

作者： Donghan Lee Joonmin Chae Sumin Cho Jong Woo Kim Awais Ahmad Mohammad Rezaul Karim Moonwoo La Sung Jea Park Dongwhi Choi Department of Mechanical Engineering(Integrated Engineering Program) Kyung Hee University1732 Deogyeong-daeroYonginGyeonggi 17104Republic of Korea Department of Chemistry University of LahoreLahorePakistan Department of Mechanical Engineering College of EngineeringKing Saud UniversityRiyadh 11421Saudi Arabia School of Mechanical Engineering Korea University of Technology and Education1600 Chungjeol-roCheonanChungnam 31253Republic of Korea

Amid the growing interest in triboelectric nanogenerators(TENGs)as novel energy-harvesting devices,several studies have focused on direct current(DC)TENGs to generate a stable DC output for operating electronic ***,owing to the working mechanisms of conventional DC TENGs,generating a stable DC output from reciprocating motion remains a ***,we propose a bidirectional rotating DC TENG(BiR-TENG),which can generate DC outputs,regardless of the direction of rotation,from reciprocating *** distinct design of the BiR-TENG enables the mechanical rectification of the alternating current output into a rotational-direction-dependent DC ***,it allows the conversion of the rotational-direction-dependent DC output into a unidirectional DC output by adapting the configurations depending on the rotational *** to these tailored design strategies and subsequent optimizations,the BiR-TENG could generate an effective unidirectional DC *** of the BiR-TENG for the reciprocating motions of swinging doors and waves were demonstrated by harnessing this *** study demonstrates the potential of the BiR-TENG design strategy as an effective and versatile solution for energy harvesting from reciprocating motions,highlighting the suitability of DC outputs as an energy source for electronic devices.

关键词： direct-current triboelectric nanogenerator mechanical rectification self-adaptive mechanical design harvesting reciprocation motion

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Regional Framework Towards Establishing Treatment, Storage, and Disposal (TSD) Facilities for PV Waste Management in the Philippines: A Case Study of Laguna Province

Regional Framework Towards Establishing Treatment, Storage, ...

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2024 Symposium on Insight to Foresight via Geospatial Technologies

作者： Diccion, Antonio L. Duran, Jeffrey Z. Engineering Program School of Advanced Studies Saint Louis University Baguio City2600 Philippines Mechanical and Mechatronics Engineering Department School of Engineering and Architecture Saint Louis University Baguio City2600 Philippines

The accelerated adoption of photovoltaic (PV) systems for renewable power generation in the Philippines will yield a tremendous amount of PV waste. However, the country lacks a comprehensive framework for understanding PV module waste volume growth and optimally siting Treatment, Storage, and Disposal (TSD) facilities for PV waste management based on minimum siting factor. The study aims to develop a regional framework that utilizes a geographic information system (GIS)-based approach to find the potential sites and optimal locations of TSD facilities in Laguna, Philippines, based on the estimated PV module waste growth of solar energy systems with service contracts and minimum siting criteria under department of Environment and Natural Resources (DENR) Administrative Order 2013-22. By 2060, the projected amount of PV module waste in Laguna province will be around 162,230 metric tons based on the waste projection results. The suitable sites cover around 19,720.5 hectares or 11.21% of the total land area of Laguna, which were determined by various siting factors that encompass social, economic, and environmental factors and obtained using binary suitability analysis and vector overlay analysis. The optimal locations of the two TSD facilities were identified using strategic positioning based on hotspot analysis, clustering algorithm, and proximity analysis. Consequently, the distance and GHG emissions of the two optimal locations were calculated. Indeed, the approach will serve as a guide for policymakers and other stakeholders in understanding PV module waste growth and strategically and optimally position TSD facilities on suitable sites for efficient and effective PV waste management. © Author(s) 2024.

关键词： Waste treatment

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Effect of Wall Shear Stress Field on Deformation Cycle of 3T3-L1 26

Effect of Wall Shear Stress Field on Deformation Cycle of 3T...

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26th World Multi-Conference on Systemics, Cybernetics and Informatics, WMSCI 2022

作者： Ono, Ryuya Hashimoto, Shigehiro Yonezawa, Hiroki Kinoshiro, Haruki Biomedical Engineering Mechanical Engineering Kogakuin University Tokyo163-8677 Japan Biomedical Engineering Department of Mechanical Engineering Kogakuin University Tokyo163-8677 Japan Biomedical Engineering Systems Design Kogakuin University Tokyo163-8677 Japan

ISBN: (纸本)9781950492657

The effect of the shear stress on deformation cycle has been investigated in vitro. To make a Couette type of shear flow, the culture medium fluid was sandwiched with a constant gap between parallel walls: a lower stationary culture disk, and an upper rotating disk. Mouse fat precursor cells (3T3-L1) were used in the test. After cultivation without flow for 24 hours for adhesion of cells on the lower plate, the shear stress τ (0.4 Pa Copyright 2022 © by the International Institute of Informatics and Systemics. All rights reserved.

关键词： Shear stress

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Improving Thyroid Disorder Diagnosis via Ensemble Stacking and Bidirectional Feature Selection

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Computers, Materials & Continua 2024年第3期78卷 4225-4241页

作者： Muhammad Armghan Latif Zohaib Mushtaq Saad Arif Sara Rehman Muhammad Farrukh Qureshi Nagwan Abdel Samee Maali Alabdulhafith Yeong Hyeon Gu Mohammed A.Al-masni Department of Computer and Information System Cleveland State UniversityOhio44115USA Department of Electrical Electronics and Computer SystemsCollege of Engineering and TechnologyUniversity of SargodhaSargodha40100Pakistan Department of Mechanical Engineering College of EngineeringKing Faisal UniversityAl-Ahsa31982Saudi Arabia Department of Biomedical Engineering Riphah International UniversityIslamabad44000Pakistan Department of Electrical Engineering Riphah International UniversityIslamabad44000Pakistan Department of Information Technology College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Department of Artificial Intelligence College of Software and Convergence TechnologySejong UniversitySeoul05006Korea

Thyroid disorders represent a significant global health challenge with hypothyroidism and hyperthyroidism as two common conditions arising from dysfunction in the thyroid *** and timely diagnosis of these disorders is crucial for effective treatment and patient *** research introduces a comprehensive approach to improve the accuracy of thyroid disorder diagnosis through the integration of ensemble stacking and advanced feature selection *** forward feature selection,sequential backward feature elimination,and bidirectional feature elimination are investigated in this *** ensemble learning,random forest,adaptive boosting,and bagging classifiers are *** effectiveness of these techniques is evaluated using two different datasets obtained from the University of California Irvine-Machine Learning Repository,both of which undergo preprocessing steps,including outlier removal,addressing missing data,data cleansing,and feature *** experimentation demonstrates the remarkable success of proposed ensemble stacking and bidirectional feature elimination achieving 100%and 99.86%accuracy in identifying hyperthyroidism and hypothyroidism,*** enhancing detection accuracy,the ensemble stacking model also demonstrated a streamlined computational complexity which is pivotal for practical medical *** significantly outperformed existing studies with similar objectives underscoring the viability and effectiveness of the proposed *** research offers an innovative perspective and sets the platform for improved thyroid disorder diagnosis with broader implications for healthcare and patient well-being.

关键词： Ensemble learning random forests boosting dimensionality reduction machine learning smart healthcare computer aided diagnosis

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Automated segmentation of central airway obstruction from endoscopic video stream with deep learning

Automated segmentation of central airway obstruction from en...

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Medical Imaging 2025: Image-Guided Procedures, Robotic Interventions, and Modeling

作者： Li, Hao Wang, Jiacheng Kumar, Nithin Lu, Daiwei Acar, Ayberk Han, John Yang, Qingyun Ertop, Tayfun Efe Wu, Jie Ying Webster, Robert J. Oguz, Ipek Department of Computer Science Vanderbilt University Nashville United States Department of Mechanical Engineering Vanderbilt University Nashville United States Department of Mechanical Aerospace and Biomedical Engineering University of Tennessee Knoxville United States

ISBN: (纸本)9781510685949

Central airway obstruction (CAO) can disrupt normal breathing and pose significant risks, with treatments often involving surgical removal. Accurate image segmentation is crucial for identifying the target region to assist surgeons or robotic surgery system during operations. Although manual annotation is the gold standard, it is time-consuming and subjective, making a robust automated segmentation algorithm desirable. In this paper, we propose an automated deep learning framework for CAO segmentation. As a benchmark study, we build a custom CAO phantom model and acquire endoscopy videos. We then establish inter-rater variability. To assess the effectiveness of the proposed method, a 4-fold cross-validation is performed with The Dice score as an evaluation metric. The proposed CAO segmentation method yields mean binary Dice scores of 0.95 and 0.89 against annotations from two human raters, respectively, compared to an inter-rater variability Dice score of 0.88. This indicates that the proposed framework can provide robust CAO segmentation from endoscopic video. © 2025 SPIE

关键词： autonomous surgical robot central airway obstruction (CAO) Image segmentation inter-rater variability phantom endoscopy video

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