Work-related musculoskeletal disorders (WMSD) continue to be a significant cause of work incapacity. Exoskeletons have the potential to prevent these disorders, with passive exoskeletons already proving their usefulne...
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In this paper we propose a cellular diagnostic support system for cervical cancer from WSI which presents the reason for diagnosis. First, cytoplasmic and nuclear regions are extracted from cell images using U-2-Net. ...
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This paper addresses an open-shop scheduling problem within a manufacturing system modeled using Mixed Integer Linear Programming, which accounts for the progressive wear of machinery after job processing. The open-sh...
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ISBN:
(纸本)9798350365924;9798350365917
This paper addresses an open-shop scheduling problem within a manufacturing system modeled using Mixed Integer Linear Programming, which accounts for the progressive wear of machinery after job processing. The open-shop problem is transformed into a flow-shop problem, involving the enumeration of all possible job paths and the selection of paths that minimize the makespan. The research provides a comparison among an offline algorithm, unable to perform machinery maintenance and disregarding increases in processing times;an offline algorithm subject to machinery maintenance constraints after processing times exceed a certain threshold;and a dynamic algorithm utilizing Model Predictive Control concepts to reroute jobs at each relevant event, including unexpected job arrivals, as well as the initiation and completion of machine maintenance. The dynamic algorithm also considers the potential unavailability of machinery due to maintenance and deterioration. Its effectiveness is assessed through a simulated case study of a flexible manufacturing system, revealing a notable improvement in makespan approximately a 30% reduction compared to the offline scenario without maintenance. This showcases its potential for real-world applications in the manufacturing industry.
With the spread of electric motors in various fields of work, such that they have become the infrastructure for many aspects of life, it has become necessary to obtain a speed controller for these motors to make them ...
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ISBN:
(纸本)9798350361612;9798350361629
With the spread of electric motors in various fields of work, such that they have become the infrastructure for many aspects of life, it has become necessary to obtain a speed controller for these motors to make them more efficient in general uses. The Field-Oriented Control (FOC) methodology is frequently recognized as one of the most important and straightforward of all the alternatives for controlling the speed of an electric motor utilizing the vector control approach. In this study, a seven-phase induction motor's speed was controlled using FOC technology exploiting the advantages of multi-phase motors. This technique offers a variety of options for controlling methods. A system was created to control the speed of a seven-phase induction motor using Field Oriented Control technology and through two methods of control: Sliding Mode Control (smc) and Proportional Integral (PI) controller, within the principles of the sine pulse width modulation (SPWM) technique. This system was designed to control the motor speed and rotor flux in the event of a disruption brought on by an increase in the rotor's resistance as a result of the motor's temperature rising. Consequently, the system turns non-linear, and conventional controllers like PI are unable to stabilize it. Therefore, there is a pressing demand for controllers that ensure higher stability for non-linear systems like smc. The system was simulated using the Matlab/Simulink environment, monitored under various operating settings, and its stability was evaluated against external variables in addition to its quick reactions and stability at the pace required to work with it.
The imbalance between the supply and demand of healthcare resources is a global challenge, which is particularly severe in developing countries. Governments and academic communities have made various efforts to increa...
Using CPR training equipment with complete feedback mechanism is a key to help people learn how to deliver high quality CPR in the emergent occasions and hence the survival rate of people who suffered from cardiac arr...
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Requirements documentation is an important activity in requirements development. Embedded systems consists of software and hardware, as well as multiple stakeholders. As systems grow in size and complexity, writing re...
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ISBN:
(纸本)9798350395525;9798350395518
Requirements documentation is an important activity in requirements development. Embedded systems consists of software and hardware, as well as multiple stakeholders. As systems grow in size and complexity, writing requirements documents becomes more time-consuming and laborious. Based on the strong correlation between embedded system and physical device, this paper proposes to use device knowledge base to support requirements documentation. Stakeholders only need to fill in the intention and device selection, and then the device and system requirements are supplemented by device knowledge. Templates and environment modeling and analysis methods are proposed to further guide requirements acquisition. This leads to considerably simplify and accelerate the requirements document development for embedded systems.
In recent years, there have been growing expectations for the improvement of operational efficiency through the use of artificial intelligence (AI: Artificial Intelligence) in various fields such as healthcare, indust...
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Currently, population in Japan has been aging at a speed unparalleled in other countries, and countermeasures against aging population and the worsening of disease for people with disabilities have become urgent issue...
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sRPE and ACWR are valuable tools for controlling fatigue levels and minimizing injuries in performance sports. Their ability to provide individualized assessment, integrate subjective and objective measures, and infor...
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