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Rare solitary splenic metastasis from a thymic carcinoma detected on fluorodeoxyglucose-positron emission tomography:A case report

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World Journal of Clinical Cases 2022年第15期10卷 5072-5076页

作者： Yueh-Hsun tsai Kuan-Hsun Lin tsai-Wang Huang Department of Surgery Tri-Service General HospitalNational Defense Medical CenterTaipei 114Taiwan Division of Thoracic Surgery Department of SurgeryTri-Service General HospitalNational Defense Medical CenterTaipei 114Taiwan

BACKGROUND Thymic carcinoma is a rare,aggressive tumor arising from the *** less than 7%of patients with thymic carcinoma,extrathoracic metastases occur in the extrathoracic lymph nodes,liver,and *** splenic metastasis can occur but is very *** date,only 2 cases of splenic metastases from thymic carcinoma have been *** SUMMARY A 45-year-old man presented with chronic cough,dyspnea,persistent hoarseness and unintentional weight loss 17 kgs in 6 *** magnetic resonance imaging revealed a large,lobulated,soft-tissue mass measuring 5.4 cm×6.6 cm×3.8 cm which involved the left superior mediastinum and supraclavicular *** computed tomography(CT)revealed a confluent and lobulated soft tissue mass encased the right brachiocephalic artery,right and left carotid arteries,and left subclavian artery in the mediastinum.A fluorodeoxyglucose-positron emission tomography was arranged for malignancy *** image revealed intense fluorodeoxyglucose avidity in a soft tissue lobulated mass occupying the superior mediastinum,over the cystic lesion in the spleen and in few enlarged nodules over the left supraclavicular ***-guided biopsy of the thymic mass and the ultrasound-guided biopsy of the splenic lesion were consistent with a thymic carcinoma with splenic *** patient was diagnosed of thymic carcinoma,cT2N2M1b,stage *** A fluorodeoxyglucose(FDG)-positron emission tomography(PET)scan can provide a useful diagnostic value in conjunction with pathological result in evaluating tumor *** case emphasizes the utility of FDG-PET for metastasis detection in thymic carcinoma.

关键词： Thymic carcinoma Splenic metastasis Positron emission tomography Extrathoracic metastases Mediastinal tumor Case report

Chest pain in a heart transplant recipient:A case report

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World Journal of Clinical Cases 2021年第16期9卷 3966-3970页

作者： Yu-Jen Chen Chien-Sung tsai tsai-Wang Huang Department of Surgery Tri-Service General HospitalNational Defense Medical CenterTaipei 11490Taiwan Division of Cardiovascular Surgery Department of SurgeryTri-Service General HospitalNational Defense Medical CenterTaipei 11490Taiwan Division of Thoracic Surgery Department of SurgeryTri-Service General HospitalNational Defense Medical CenterTaipei 11490Taiwan

BACKGROUND Heart transplantation is recommended for the treatment of patients with refractory heart *** pain after heart transplantation is usually considered noncardiac owing to the denervated ***,data from case reports on tacrolimus-induced achalasia after heart transplantation are *** aimed to present a case of tacrolimus-induced achalasia that developed after heart tran-splantation,which was successfully relieved by laparoscopic Heller *** SUMMARY A 67-year-old man with a history of Type 2 diabetes mellitus,hyperlipidemia,and dilated cardiomyopathy had congestive heart failure following orthotopic heart transplantation with tacrolimus treatment 12 years *** the 10-year follow-up after the heart transplantation,the patient presented with persistent cough,dysphagia,heartburn,and retrosternal chest pain lasting for 2 *** endoscopy revealed no specific *** years later,the patient experienced the same symptoms,including chest pain lasting for 4 *** and manometry confirmed the presence of *** reports showed that discontinuing calcineurin inhibitor(CNI)treatment and endoscopic botulinum toxin injection could treat CNI-induced *** to the risk of rejection of the transplanted heart and considering the temporary benefits of botulinum toxin injection in achalasia,the patient underwent laparoscopic Heller *** was relieved without *** months later,he had no signs of recurrence of the *** In transplant patients with chest pain and gastrointestinal symptoms, CNIinducedachalasia may be one of the differential diagnoses. Esophagogram/manometry is useful for diagnosis.

关键词： Heart transplantation Refractory heart failure Chest pain Achalasia Esophagogram Case report

Improving Speech Enhancement Framework via Deep Learning

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Computers, Materials & Continua 2023年第5期75卷 3817-3832页

作者： Sung-Jung Hsiao Wen-tsai Sung Department of Information Technology Takming University of Science and TechnologyTaipei City11451Taiwan Department of Electrical Engineering National Chin-Yi University of TechnologyTaichung411030Taiwan

Speech plays an extremely important role in social *** individuals suffer from a“speech barrier,”which limits their communication with *** this study,an improved speech recognitionmethod is proposed that addresses the needs of speech-impaired and deaf individuals.A basic improved connectionist temporal classification convolutional neural network(CTC-CNN)architecture acoustic model was constructed by combining a speech database with a deep neural *** sensors were used to convert the collected voice signals into text or corresponding voice signals to improve *** method can be extended to modern artificial intelligence techniques,with multiple applications such as meeting minutes,medical reports,and verbatim records for cars,sales,*** experiments,a modified CTC-CNN was used to train an acoustic model,which showed better performance than the earlier common *** a CTC-CNN baseline acoustic model was constructed and optimized,which reduced the error rate to about 18%and improved the accuracy rate.

关键词： Artificial intelligence speech recognition speech to text CTC-CNN

RFID Positioning and Physiological Signals for Remote Medical Care

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Computer Systems Science & Engineering 2022年第4期41卷 289-304页

作者： Wen-tsai Sung Sung-Jung Hsiao Department of Electrical Engineering National Chin-Yi University of TechnologyTaichung411030Taiwan Department of Information Technology Takming University of Science and TechnologyTaipei City11451Taiwan

The safety of patients and the quality of medical care provided to them are vital for their *** study establishes a set of RFID(Radio Fre-quency Identiﬁcation)-based systems of patient care based on physiological sig-nals in the pursuit of a remote medical care *** RFID-based positioning system allows medical staff to continuously observe the patient's health and *** staff can thus respond to medical emergencies in time and appropriately care for the *** the COVID-19 pandemic broke out,the proposed system was used to provide timely information on the location and body temperature of patients who had been screened for the *** results of experiments and comparative analyses show that the proposed system is superior to competing systems in *** use of remote monitoring technology makes user interface easier to provide high-quality medical services to remote areas with sparse populations,and enables better care of the elderly and patients with mobility *** can be found from the experiments of this research that the accuracy of the position sensor and the ability of package delivery are the best among the other related *** presentation of the graphical interface is also the most cordial among human-computer interaction and the operation is simple and clear.

关键词： Remote medical care active RFID positioning physiological signal

Software-as-a-service(SaaS): perspectives and challenges

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Science china(Information Sciences) 2014年第5期57卷 5-19页

作者： tsai WeiTek BAI XiaoYing HUANG Yu School of Computing Informatics and Decision Systems Engineering Arizona State University Department of Computer Science and Technology Tsinghua National Lab of Information Science and TechnologyTsinghua University

Software-as-a-service(SaaS)has received significant attention recently as one of three principal components of cloud computing,and it often deals with applications that run on top of a platform-as-a-service(PaaS)that in turn runs on top of infrastructure-as-a-service(IaaS).This paper provides an overview of SaaS including its architecture and major technical issues such as customization,multi-tenancy architecture,redundancy and recovery mechanisms,and ***,a SaaS system can have architecture relating to a database-oriented approach,middleware-oriented approach,service-oriented approach,or PaaS-oriented *** SaaS customization strategies can be used from light customization with manual coding to heavy customization where the SaaS system and its underlying PaaS systems are customized ***-tenancy architecture is an important feature of a SaaS and various trade-offs including security isolation,performance,and engineering effort need to be *** is important for a SaaS system to have multi-level redundancy and recovery mechanisms,and the SaaS system needs to coordinate these with the underlying PaaS ***,SaaS scalability mechanisms include a multi-level architecture with load balancers,automated data migration,and software design strategies.

关键词： software-as-a-service SaaS architecture customization multi-tenancy architecture redundancy and recovery scalability

Utilizing Blockchain Technology to Improve WSN Security for Sensor Data Transmission

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Computers, Materials & Continua 2021年第8期68卷 1899-1918页

This paper proposes a method for improving the data security of wireless sensor networks based on blockchain *** technology is applied to data transfer to build a highly secure wireless sensor *** this network,the relay stations use microcontrollers and embedded devices,and the microcontrollers,such as Raspberry Pi and Arduino Yun,represents mobile *** proposed system uses microcontrollers to facilitate the connection of various sensor *** adopting blockchain encryption,the security of sensing data can be effectively improved.A blockchain is a concatenated transaction record that is protected by *** section contains the encrypted hash of the previous section,the corresponding timestamp,and transaction *** transaction data denote the sensing data of the wireless sensing *** proposed system uses a hash value representation calculated by the Merkel-tree algorithm,which makes the transfer data of the system difficult to be tamped ***,the proposed system can serve as a private cloud data *** this study,the system visualizes the data uploaded by sensors and create relevant charts based on big data *** the webpage server of the proposed system is built on an embedded operating system,it is easy to model and visualize the corresponding graphics using Python or JavaScript programming ***,this study creates an embedded system mobile database and web server,which can utilize JavaScript program language and *** runtime environment to apply blockchain technology to mobile *** proposed method is verified by the experiment using about 1600 data *** results show that the possibility of data being changed is very small,and the probability of data being changed is almost zero.

关键词： Blockchain embedded system big data analysis python javascript node.js

Home Monitoring of Pets Based on AIoT

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Computer Systems Science & Engineering 2022年第10期43卷 59-75页

作者： Wen-tsai Sung Sung-Jung Hsiao Department of Electrical Engineering National Chin-Yi University of TechnologyTaichung City411030Taiwan Department of Information Technology Takming University of Science and TechnologyTaipei City11451Taiwan

With technological and social development in recent decades,people have begun pursuing more comfortable lives that frequently feature household pets that are treated like members of the *** average,one out of every three households has a *** has also led to the creation and growth of many businesses in the pet industry.A few companies have developed a system that allows busy office workers to remotely care for pets at home based on the Internet of Things and an intelligent adjustment *** owners of two dogs,the authors of this study observed their pets’living habits and recorded environmental conditions that appear suitable for *** data were then used to develop an automatic control system to care for *** observational data on the pets’habits and environment were written in a program in Arduino by using the ESP8266 Wi-Fi *** module and booster module control is the switch and setting of various household *** to the loop setting of the program,the system does not need to manually switch or adjust the electrical settings of the ***,the pet's living environment is assessed by using various *** use of Arduino programs helps develop a system that can automatically adjust the environment to one that is most suitable for the pet's comfort.

关键词： Remote medical care active RFID positioning physiological signal

Enhancing Design of Visual-Servo Delayed System

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Journal of Electronic Science and Technology 2018年第3期16卷 232-240页

作者： Zhi-Ren tsai Yau-Zen Chang the Department of Computer Science and Information Engineering Asia University the Department of Medical Research China Medical University Hospital China Medical University the Department of Mechanical Engineering Chang Gung University the Department of Neurosurgery Chang Gung Memorial Hospital

A robust adaptive predictor is proposed to solve the time-varying and delay control problem of an overhead crane system with a stereo-vision servo. The predictor is based on the use of a recurrent neural network(RNN) with tapped delays, and is used to supply the real-time signal of the swing angle. There are two types of discrete-time controllers under investigation, i.e., the proportional-integral-derivative(PID) controller and the sliding controller. Firstly, a design principle of the neural predictor is developed to guarantee the convergence of its swing angle estimation. Then, an improved version of the particle swarm optimization algorithm, the parallel particle swarm optimization(PPSO) method is used to optimize the control parameters of these two types of controllers. Finally, a homemade overhead crane system equipped with the Kinect sensor for the visual servo is used to verify the proposed scheme. Experimental results demonstrate the effectiveness of the approach, which also show the parameter convergence in the predictor.

关键词： Parallel particle swarm optimization robust adaptive predictor stereo-vision servo time-varying delay

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Functional Design of A Series of Submerged Breakwaters for Coastal Protection Against Waves

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china Ocean Engineering 2010年第3期24卷 553-564页

作者： Li-Hung tsai Chih-Chung WEN Center of Harbor and Marine Technology Institute of TransportationMinistry of Transportation and Communications Department of Safety Health and Environmental EngineeringHungkuang University

The purpose of this paper is to develop a functional method for designing a series of submerged breakwaters on practical topography. The method is used to verify the feasibility and effectiveness of Bragg breakwaters for coastal protection by using field topography. The first part of this paper provides definitions and procedures needed in the design process for applying the mechanism of Bragg reflection. Next, Bragg breakwaters are designed on the basis of the cross-sectional topography and then on the plane topography of the Mi-Tuo coast by following the proposed process and procedure. Numerical modeling （Hsu et al., 2003; Wen and tsai, 2008） was used as a design and assessment tool. Finally, the effectiveness and feasibility of a Bragg breakwater was assessed by practical cases. Based on the mechanism of Bragg reflection, an optimum layout for a series of submerged breakwaters is proposed to protect the Mi-Tuo coast. The results indicate that the proper layout of a series of submerged creakwaters can achieve the objective of beach protection.

关键词： a series of submerged breakwaters Bragg reflection coastal protection

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