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3rd International Conference on Experimental and Computational Mechanics in engineering, ICECME 2021

作者： Jalil, Saifuddin Muhammad Husaini Munadi, Rizal Sara, Ira Devi Doctoral Program School of Engineering Post Graduate Program Universitas Syiah Kuala Banda Aceh23111 Indonesia Department of Electrical and Computer Engineering Universitas Syiah Kuala Darussalam Banda Aceh23111 Indonesia Department of Mechanical Engineering Universitas Syiah Kuala Darussalam Banda Aceh23111 Indonesia Department of Electrical Universitas Malikussaleh Lhokseumawe24351 Indonesia

ISBN: (纸本)9789811936289

Solar-powered dryers are still expensive and difficult to obtain for farmers with medium to low production capacity. For this reason, it is necessary to develop technology on a solar-powered dryer with a solar panel capacity of 200WP is equipped with a maximum power point tracker as an integrated solar collector with a photovoltaic system. The system in this solar-powered dryer consists of a solar panel tracker, a rotating aluminum cylinder net, a photovoltaic tracker, a battery bank, a microcontroller, and a DC/AC inverter. This system improves the performance of solar panels in the drying process of Moringa leaves. This design is expect to be the right system to ensure maximum results by providing solar radiation energy in the drying process of agricultural products. The aims goal to minimize problems in the drying of agricultural products experienced by farmers using an automatic dual-energy solar-powered dryer as a development innovation for the drying process. This study uses an experimental methodology and field data collection using a solar-powered dryer that has been analyzed and measured to obtain data comparisons. shows the maximum data of voltage and power response in positioning photovoltaic to produce the increased output power of photovoltaic array. Maximum application of powerpoint tracker on microcontroller based dual energy solar powered dryer on solar panels for drying moringa leaves produces the advantage of maximum energy absorption in solar panels and shortens the time in the drying process of moringa leaves. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Microcontrollers

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Computational investigation of the vibrational modes and parametric studies of through-wall acoustic energy transfer systems 16

Computational investigation of the vibrational modes and par...

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Active and Passive Smart Structures and Integrated Systems XVI 2022

作者： Winnard, T.J. Shahab, S. Department of Biomedical Engineering and Mechanics Virginia Tech BlacksburgVA20460 United States Department of Mechanical Engineering Virginia Tech BlacksburgVA20460 United States

ISBN: (数字)9781510649620

ISBN: (纸本)9781510649613

There is a clear need to power electronic components wirelessly. Various applications cannot be powered by wired or electromagnetic means. Acoustic energy transfer (AET) is an effective method in powering devices sealed or shielded by walls, and such applications are termed though-wall AET systems. These systems are constructed of a transmitter and a receiver that are bonded on opposite sides of the wall. Through-wall AET systems are typically modeled as three-layer systems. This method does not account for the additional layers created by the bonding agents that connect the transducers to the wall. Additionally, modeling of such systems assumes motion solely in the thickness direction. This assumption implies that the system undergoes "piston-like" deformation. This work addresses the need to computationally investigate through-wall AET systems and address the consequences of the aforementioned assumptions. © 2022 SPIE.

关键词： Finite element method

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Facility Layout using Computer Routing: A Review

Facility Layout using Computer Routing: A Review

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Science, engineering and Business for Sustainable Development Goals (SEB-SDG), International Conference on

作者： Nduka Ekene Udoye Sociis Tobias Aguzie Okolie Ogechi Joy Nnamba Ojo Sunday Isaac Fayomi Solomon Banjo Department of Mechanical Engineering Covenant University Ota Lagos State Nigeria Department of Mechanical Engineering Gregory University Uturu Abia State Nigeria Department of Mechanical and Biomedical Engineering Bells University of Technology Ota Ogun State Nigeria Department of Mechanical Engineering Science University of Johannesburg Johannesburg South Africa Department of Mechanical Engineering College of Engineering Covenant University Ota Lagos State Nigeria

ISBN: (数字)9798350358155

ISBN: (纸本)9798350358162

Facility Layout is an essential aspect of any industry or firm because it determines how well the industry would operate when production begins and how productive its processes would be. Some of its objectives are to save cost, and time, improve productivity and enhance customer satisfaction. Facility layout design is also fundamental because it lays the foundation for how the layout would look before it is produced physically or further improved on. The review discusses how CORELAP is being implemented and its firms or industries' effects where it was implemented. From this review, it can be concluded that CORELAP is an efficient and effective technique that can be used to create new layouts and redesign existing layouts to reduce material handling distance, save time, and save costs incurred.

关键词： Industries Productivity Costs Reviews Layout Customer satisfaction Software algorithms

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Temperature-Dependent Hydrogen Modulations of Ultra-Scaled a-IGZO Thin Film Transistor Under Gate Bias Stress

IEEE Open Journal of Nanotechnology

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IEEE Open Journal of Nanotechnology 2024年 5卷 9-16页

作者： Aslam, Muhammad Chang, Shu-Wei Chuang, Min-Hui Chen, Yi-Ho Lee, Yao-Jen Li, Yiming Parallel and Scientific Computing Laboratory National Yang Ming Chiao Tung University Hsinchu300093 Taiwan Electrical Engineering and Computer Science International Graduate Program National Yang Ming Chiao Tung University Hsinchu300093 Taiwan Department of Electrical Engineering National Cheng Kung University Tainan701401 Taiwan Institute of Communications Engineering National Yang Ming Chiao Tung University Hsinchu300093 Taiwan Graduate Degree Program of College of Electrical and Computer Engineering National Yang Ming Chiao Tung University Hsinchu300093 Taiwan Institute of Pioneer Semiconductor Innovation National Yang Ming Chiao Tung University Hsinchu300093 Taiwan Institute of Biomedical Engineering National Yang Ming Chiao Tung University Hsinchu300093 Taiwan Department of Electronics and Electrical Engineering National Yang Ming Chiao Tung University Hsinchu300093 Taiwan

Recently, a-IGZO has advanced toward the next-generation electronics system because of its compatibility with complementary metal oxide semiconductor (CMOS) and back-end-of-line (BOEL) based systems. A systematic electrical characterization of a-IGZO TFT related to reliability issues, such as positive bias temperature stress (PBTS) and negative bias temperature stress (NBTS), would entitle its integration into novel electronics systems. Unexpectedly, PBTS is characterized by the transition of positive Vth shift to negative Vth shift (ΔVth, the positive shift followed by the stress and temperature activated negative shift). This transition is attributed to charge trapping/trap-site generations and hydrogen migration to the active layer. The ΔVth shift mechanism depends on the temperature and voltage stress. On the other hand, a negative ΔVth shift has been observed during the NBTS operation and could be attributed to the hole trapping at the interface of GI/IGZO. An effective suppression of the gate leakage current has also been observed during reliability tests. Simulation results reveal a pronounced potential at the edges of source and drain regions, and considered the origin of hydrogen migration into the IGZO layer. Thermal image results also reveal the strong temperature/potential distribution at the edges of the source/drain regions, indorsing the simulation results. © 2020 IEEE.

关键词： Oxide semiconductors

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Multiplexed Nanoscopy via Buffer Exchange

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ACS Nano 2024年第34期18卷 23445-23456页

作者： Chang, Ting-Jui Ben Yang, T. Tony Department of Electrical Engineering National Taiwan University Taipei10617 Taiwan Graduate Institute of Biomedical Electronics and Bioinformatics National Taiwan University Taipei10617 Taiwan Department of Physics National Taiwan University Taipei10617 Taiwan Nano Science and Technology Program Taiwan International Graduate Program Academia Sinica and National Taiwan University Taipei10617 Taiwan

Understanding cellular functions, particularly in their intricate complexity, can greatly benefit from the spatial mapping of diverse molecules through multitarget single-molecule localization microscopy (SMLM). Existing methodologies, primarily restricting the encoding dimensions to color and lifetime or requiring cyclic staining, often involve broad chromatic detection, specialized optical configurations, or sophisticated labeling techniques. Here, we propose a simple approach called buffer-exchange stochastic optical reconstruction microscopy (beSTORM), which introduces an additional dimension to differentiate between single molecules irrespective of their spectral properties. This method leverages the distinguishable photoblinking responses to distinct buffer conditions, offering a straightforward yet effective means of fluorophore discrimination. Through buffer exchanges, beSTORM achieves multitarget SMLM imaging with minimal crosstalk. Direct integration with expansion microscopy (ExM) demonstrates its capability to resolve up to six proteins at the molecular level within a single emission color without chromatic aberration. Overall, beSTORM presents a highly compatible imaging platform, promising significant advancements in highly multiplexed nanoscopy for exploring multiple targets in biological systems with nanoscale precision. © 2024 The Authors. Published by American Chemical Society.

关键词： Stochastic systems

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Business Process Models in Small and Medium Manufacturing Industries: An Overview

Business Process Models in Small and Medium Manufacturing In...

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IEEE International Conference on Industrial engineering and engineering Management

作者： Muhammad Zainuddin Fathoni Anna Maria Sri Asih Muhammad Arif Wibisono Industrial Engineering Program Department of Mechanical and Industrial Engineering Faculty of Engineering Universitas Gadjah Mada Yogyakarta Indonesia Industrial Engineering Program Faculty of Engineering Universitas Muhammadiyah Gresik Gresik Indonesia

ISBN: (数字)9798350386097

ISBN: (纸本)9798350386103

Business process management has become a critical focus for many manufacturing industries. The function of business process management is to achieve organizational goals through the improvement, management, and control of business processes. A crucial step for companies in visualizing, analyzing, and optimizing workflows is business process modeling. Business Process Model and Notation (BPMN) is a tool widely used to visualize business process flows. This study employs a qualitative approach, using interviews conducted with seven small and medium-sized industries (SMIs). Important findings identified in SMI, in the recording process, both upstream and downstream processes, are still carried out manually, this is related to the potential for implementing enterprise resource planning (ERP). Regarding the processes on the production floor, in addition to paying little attention to implementing record-keeping systems, SMIs also tend to neglect forecasting methods, warehouse management, and the use of material handling.

关键词： Manufacturing industries Visualization Process modeling Process control Companies Business process management Recording Manufacturing Floors Business

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Nonlinear vibration of multi-walled carbon nanotubes with initial curvature resting on elastic foundations in a nonlinear thermo-magnetic environment

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engineering Transactions 2021年第2期69卷 87-165页

作者： Sobamowo, Gbeminiyi Akanmu, James Adeleye, Olurotimi Akingbade, Samuel Yinusa, Ahmed Department of Mechanical Engineering University of Lagos Akoka Lagos Nigeria Department of Civil and Environmental Engineering University of Lagos Akoka Lagos Nigeria Department of Biomedical Engineering University of Lagos Akoka Lagos Nigeria

The present work focuses on nonlinear dynamics models of multi-walled carbon nanotubes with initial curvature resting on Winkler-Pasternak elastic foundations in a nonlinear thermomagnetic environment using nonlocal elasticity theory. The derived systems of nonlinear vibration models are solved with the aid of the Galerkin decomposition and the homotopy perturbation method. Effects of temperature, magnetic field, multi-layer, and other thermomechanical parameters on the dynamic responses of the slightly curved multi-walled carbon nanotubes are investigated and discussed. As the temperature increases, the frequency ratio decreases as the linear natural frequency of the system increases. The results reveal that the frequency ratios decrease as the number of nanotube walls, temperature, spring constants, magnetic field strength, and the ratio of the radius of curvature to the length of the slightly curved nanotubes increase. These trends are the same for all the boundary conditions considered. However, clamped-simple and clamped-clamped supported multi-walled nanotube have the highest and lowest frequency ratio, respectively. Also, from the parametric studies to control nonlinear vibration of the carbon nanotubes, it is shown that quadruple-walled carbon nanotubes can be taken as pure linear vibration even at any value of linear Winkler and Pasternak constants. Therefore, this can be used for the restraining of the chaos vibration in the objective structure. These research findings will assist the designers and manufacturers in developing multi-walled carbon nanotubes for various structural, electrical, mechanical, and biological applications, especially in the areas of designing nanoelectronics, nanodevices, nanomechanical systems, nanobiological devices, and nanocomposites, and particularly when they are subjected to thermal loads, magnetic fields and elastic foundations. © 2021, Polska Akademia Nauk. All rights reserved.

关键词： Thermal effects

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Quantitative characterization of liquids flowing in geometrically controlled sub-100 nm nanofluidic channels

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Analytical Sciences 2023年第6期39卷 779-784页

作者： Kazoe, Yutaka Ikeda, Keisuke Mino, Kensuke Morikawa, Kyojiro Mawatari, Kazuma Kitamori, Takehiko Department of System Design Engineering Faculty of Science and Engineering Keio University 3-14-1 Hiyoshi Yokohama Kohoku223-8522 Japan Department of Applied Chemistry School of Engineering The University of Tokyo 7-3-1 Hongo Tokyo Bunkyo113-8656 Japan Institute of Nanoengineering and Microsystems Department of Power Mechanical Engineering National Tsing Hua University No. 101 Section 2 Kuang-Fu Road Hsinchu300044 Taiwan Collaborative Research Organization for Micro and Nano Multifunctional Devices The University of Tokyo 7-3-1 Hongo Tokyo Bunkyo113-8656 Japan Department of Biomedical Engineering Faculty of Engineering Lund University Lund221 00 Sweden

With development of nanotechnologies, applications exploiting nanospaces such as single-molecule analysis and high-efficiency separation have been reported, and understanding properties of fluid flows in 101 nm to 102 nm scale spaces becomes important. Nanofluidics has provided a platform of nanochannels with defined size and geometry, and revealed various unique liquid properties including higher water viscosity with dominant surface effects in 102 nm spaces. However, experimental investigation of fluid flows in 101 nm spaces is still difficult owing to lack of fabrication procedure for 101 nm nanochannels with smooth walls and precisely controlled geometry. In the present study, we established a top-down fabrication process to realize fused-silica nanochannels with 101 nm scale size, 100 nm roughness and rectangular cross-sectional shape with an aspect ratio of 1. Utilizing a method of mass flowmetry developed by our group, accurate measurements of ultra-low flow rates in sub-100 nm nanochannels with sizes of 70 nm and 100 nm were demonstrated. The results suggested that the viscosity of water in these sub-100 nm nanochannels was approximately 5 times higher than that in the bulk, while that of dimethyl sulfoxide was similar to the bulk value. The obtained liquid permeability in the nanochannels can be explained by a hypothesis of loosely structured liquid phase near the wall generated by interactions between the surface silanol groups and protic solvent molecules. The present results suggest the importance of considering the species of solvent, the surface chemical groups, and the size and geometry of nanospaces when designing nanofluidic devices and membranes. Graphical abstract: [Figure not available: see fulltext.]. © 2023, The Author(s), under exclusive licence to The Japan Society for Analytical Chemistry.

关键词： Nanofluidics

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Towards Mathematical Modeling of Tissue-Engineered Skeletal Muscle Considering Contraction-Induced Stiffness Changes*

Towards Mathematical Modeling of Tissue-Engineered Skeletal ...

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IEEE International Conference on Cyborg and Bionic Systems (CBS)

作者： Yoshitake Akiyama Mizuki Nakamura Noriyasu Iwamoto Ken Masuya Biomedical Engineering Department Shinshu University Ueda-shi Nagano JAPAN YKK Corporation Kurobe-shi Toyama JAPAN Mechanical Engineering Program Faculty of Engineering University of Miyazaki Miyazaki-shi Miyazaki JAPAN

ISBN: (数字)9798350388039

ISBN: (纸本)9798350388046

Recently, bio-hybrid devices using muscle tissue or muscle cells as a drive source have been actively studied. Although there have been many reports on the development of bioactuators, most of them are concerned with muscle tissue culture and assembly methods, and very few studies have been conducted from the control engineering perspective of tissue-engineered muscle actuators. It is known that the stiffness of muscle changes between relaxation and excitation, and in particular, empirically, tissue-engineered muscle is immature compared to biological muscle, so the change in stiffness during contraction is relatively very large. Therefore, we will first evaluate the change in stiffness of cultured muscle during relaxation and contraction by a push test and confirm that the stiffness increases significantly with TESM. In addition, it is difficult to represent this large change in stiffness using the conventional Hill’s four-element model. Therefore, this study proposes a model of TESM in which two active elements that are involved only during contraction are added to Hill’s four-element model. The force equations for these isometric tests are derived. As a next step, we plan to experimentally identify the parameters to confirm the validity of this model.

关键词： Actuators Control engineering Biological system modeling Human-machine systems Force Muscles Mathematical models Assembly

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Adoption of Open-Source Enterprise Resource Planning in Small and Medium Industries: A Literature Review

Adoption of Open-Source Enterprise Resource Planning in Smal...

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IEEE International Conference on Industrial engineering and engineering Management

作者： Muhammad Zainuddin Fathoni Anna Maria Sri Asih Muhammad Arif Wibisono Department of Mechanical and Industrial Engineering Industrial Engineering Program Faculty of Engineering Universitas Gadjah Mada Yogyakarta Indonesia Industrial Engineering Program Faculty of Engineering Universitas Muhammadiyah Gresik Gresik Indonesia

ISBN: (数字)9798350386097

ISBN: (纸本)9798350386103

Small and Medium-Scale Industries (SMIs) play a significantly important role in the nation’s economy. The adoption of current technology is necessary for SMIs to remain agile amidst industrial changes or challenges. However, they often face limitations in utilizing technology, particularly information technology, in their business processes. One popular integrated information system is the Enterprise Resource Planning (ERP) system, which connects various business units within an organization into a single integrated system. The implementation of ERP systems in small and medium-scale industries is necessary to enhance the effectiveness and efficiency of their business processes. In this paper, we conduct a systematic review of the literature discussing the adoption of open-source ERP systems in SMIs. The conclusion drawn is that ERP implementation in SMIs occurs across various sectors, including services, trading, and manufacturing. Developing open-source ERP systems poses substantial challenges for SMIs. This literature review investigates trends in ERP implementation for SMIs, highlighting current research directions and uncovering new insights and opportunities that can inform future studies.

关键词： Industries Software as a service Standards organizations Market research Enterprise resource planning Manufacturing Information technology Business Systematic literature review Information systems

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