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Nanoscale Materials and Deformable Device Designs for Bioinspired and Biointegrated Electronics

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Accounts of Materials Research 2021年第4期2卷 266-281页

作者： Woongchan Lee Huiwon Yun Jun-Kyul Song sung-hyuk sunwoo Dae-Hyeong Kim Center for Nanoparticle Research Institute for Basic Science(IBS)Seoul 08826Republic of Korea School of Chemical and Biological Engineering Institute of Chemical ProcessesSeoul National UniversitySeoul 08826Republic of Korea

Electronic devices whose structural and functional features are inspired by living creatures have unique performance and unconventional features that are not found in conventional electronic *** addition to such bioinspired electronics,with the rise of new fields such as personalized healthcare,mobile electronics,and big-data analysis,biointegrated electronic devices that can collect biomedical information from the human body through various biosensors and deliver appropriate therapeutic feedback stimulations in real time on the spot where immediate treatment is needed have become *** body parts and internal organs of living creatures,including humans,have curvilinear shapes and comprise mechanically soft tissues,such bioinspired and biointegrated electronic devices are required to match the soft and deformable features of biological *** soft and deformable features of electronic devices can be achieved by employing flexible and stretchable materials and unconventional device design *** soft materials and deformable device designs dissipate stress originating from mechanical deformation of the device and thus retard crack generation and/or propagation in the ***,technologies for nanoscale materials have shown a significant level of progress on their material performance and processing *** nanoscale dimension of the electronic materials could achieve extremely small flexural rigidity in comparison to the bulk state of the same ***,techniques to form a well-percolated network of nanomaterials in the elastomeric matrix and to build a pathway for the facile electron and hole transport inside the polymer have induced dramatic performance advances of soft electronic materials,which led to nanocomposites that can accomplish both high mechanical deformability and high electrical performance at the same *** addition,deformable device designs such as buckled structures and serpentine des

关键词： buckling rigidity electronics

Delivery Invoice Information Classification System for Joint Courier Logistics Infrastructure

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Computers, Materials & Continua 2023年第5期75卷 3027-3044页

作者： Youngmin Kim sunwoo Hwang Jaemin Park Joouk Kim Department of Systems Engineering Ajou UniversitySuwon16499Korea Advanced Logistics System Research Department Korea Railroad Research InstituteUiwang16105Korea

With the growth of the online market,demand for logistics and courier cargo is increasing ***,in the case of urban areas,road congestion and environmental problems due to cargo vehicles are mainly *** joint courier logistics system,a plan to solve this problem,aims to establish an efficient logistics transportation system by utilizing one joint logistics delivery terminal by several logistics and delivery ***,several courier companies use different types of courier *** a system has a problem of information data transmission ***,the data processing process was systematically analyzed,a practically feasible methodology was devised,and delivery invoice information processing standards were established for *** addition,the importance of this paper can be emphasized in terms of data processing in the logistics sector,which is expected to grow rapidly in the *** results of this study can be used as basic data for the implementation of the logistics joint delivery terminal system in the *** it can be used as a basis for securing the operational reliability of the joint courier logistics system.

关键词： Joint courier logistics base infrastructure logistics cooperation urban public infrastructure YOLOv4 object detection algorithm

Object Detection for Cargo Unloading System Based on Fuzzy C Means

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Computers, Materials & Continua 2022年第5期71卷 4167-4181页

作者： sunwoo Hwang Jaemin Park Jongun Won Yongjang Kwon Youngmin Kim Department of Systems Engineering Ajou UniversitySuwon16499Korea New Transportation Innovative Research Center Korea Railroad Research InstituteUiwang16105Korea Innovative Transportation and Logistics Research Center Korea Railroad Research InstituteUiwang16105Korea

With the recent increase in the utilization of logistics and courier services,it is time for research on logistics systems fused with the fourth industry *** studies related to object recognition have been actively conducted in convergence with the emerging artificial intelligence field,but so far,algorithms suitable for automatic unloading devices that need to identify a number of unstructured cargoes require further *** this study,the object recognition algorithm of the automatic loading device for cargo was selected as the subject of the study,and a cargo object recognition algorithm applicable to the automatic loading device is proposed to improve the amorphous cargo identification *** fuzzy convergence algorithm is an algorithm that applies Fuzzy C Means to existing algorithm forms that fuse YOLO(You Only Look Once)and Mask R-CNN(Regions with Convolutional Neuron Networks).Experiments conducted using the fuzzy convergence algorithm showed an average of 33 FPS(Frames Per Second)and a recognition rate of 95%.In addition,there were significant improvements in the range of actual box *** results of this study can contribute to improving the performance of identifying amorphous cargoes in automatic loading devices.

关键词： Deep learning algorithm YOLOv2 Mask R-CNN Fuzzy C Means unloading system

Suggestion of Maintenance Criteria for Electric Railroad Facilities Based on Fuzzy TOPSIS

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Computers, Materials & Continua 2022年第3期70卷 5453-5466页

作者： sunwoo Hwang Joouk Kim Hagseoung Kim Hyungchul Kim Youngmin Kim Innovative Transportation and Logistics Research Center Korea Railroad Research InstituteUiwang16105Korea Smart Electrical&Signaling Division Korea Railroad Research InstituteUiwang16105Korea Department of Systems Engineering Ajou UniversitySuwon16499Korea

This paper is on the suggestion of maintenance items for electric railway facility *** the recent increase in the use of electric locomotives,the utilization and importance of railroad electrical facility systems are also increasing,but the railroad electrical facility system in Korea is rapidly *** solve this problem,various methodologies are applied to ensure operational reliability and stability for railroad electrical facility systems,but there is a lack of detailed evaluation criteria for railroad electrical facility system ***,maintenance items must be selected in a scientific and systematic ***,railroad electrical facility systems are selected for *** StructureMatrix(DSM)is utilized to establish considerations tailored to the maintenance characteristics,and the Fuzzy-TOPSIS methodology is utilized for determining the maintenance detail evaluation item baseline weights,a multi-criteria decision-making *** show that degradation,insulation items have the highest weight of 14.63%,and capacity items have the lowest weight of 5.34%.The results of this may be contributed to the underlying research in carrying out maintenance activities to ensure the reliability and safety of railroad electrical facility systems.

关键词： Electrical facility system railroad maintenance fuzzy method

An overview on metal-related catalysts: metal oxides, nanoporous metals and supported metal nanoparticles on metal organic frameworks and zeolites

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Rare Metals 2020年第7期39卷 751-766页

作者： Bhupendra Kumar Singh sunwoo Lee Kyungsu Na Department of Chemistry Chonnam National UniversityGwangju 61186Republic of Korea

Metal nanoparticles(NPs) supported on porous materials have shown great advantages in many catalytic application fields. Supported metal NPs are receiving extensive attention due to their significant contribution in a wide range of current and future applications, and this is arguably one of the fastest growing research fields. In this review, we highlight various types of metal catalysts that possess great potential in several catalytic reactions. The major focus has been on metal oxides, nanoporous metals and metal NPs supported on metal-organic frameworks(MOFs) and zeolites. Special attention has been given to the synthesis strategies and application of the NPs supported on MOFs and zeolites, which are considered highly interesting and rapidly expanding areas in heterogeneous catalysis. Finally, the prospects of these catalysts have been included in the concluding remarks.

关键词： Supported metal catalysts Porous materials Nanoporous metals Heterogeneous catalysis Zeolites Metal oxides Metal-organic frameworks

Development of a chromatographic lateral flow immunoassay for detection of African swine fever virus antigen in blood

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Animal Diseases 2022年第3期2卷 139-153页

作者： Daniel W.Madden Sun-Young sunwoo Natasha N.Gaudreault Jessie D.Trujillo Igor Morozov Carmina Gallardo Juergen A.Richt Department of Diagnostic Medicine/Pathobiology College of Veterinary MedicineKansas State UniversityManhattanKSUSA Centro de Investigación en Sanidad Animal(CISA-INIA/CSIC) MadridSpain

African swine fever(ASF)is a highly lethal disease of domestic and wild swine caused by African swine fever virus(ASFV).The disease currently circulates in Africa,Europe,Asia and on the island of *** ongoing epizootics in Europe and Asia have produced millions of animal deaths and severe economic *** effective vaccine is available for ASF,making rapid and accurate detection of ASFV essential for disease mitigation *** available diagnostics for ASFV possess significant limitations related to assay performance,deployability,and/or turn-around time;therefore there is an unmet need for pen-side diagnostic tests with sufficient sensitivity and specificity.A chromatographic lateral flow immunoassay(LFIA)was developed for the detection of ASFV antigen in EDTA-treated whole blood using monoclonal antibodies targeting the viral p30 *** assay requires only water to perform and provides results in 25 min,making it well-suited for field *** LFIA was capable of detecting genotype I and genotype II strains of ASFV in EDTA blood from experimentally infected pigs at varying time-points after infection,though it was unable to detect a genotype X ASFV *** sensitivity correlated with clinical disease severity,body temperature,and viral DNA levels,and was over 90%in animals showing moderate to severe ASF-related symptoms after challenge with virulent genotype II *** LFIA also showed a robust diagnostic specificity of over 98%,which is essential to field testing for a high consequence to foregin animal *** LFIA targeting the viral p30 protein can reliably detect ASFV in whole blood from animals showing moderate to severe clinical signs of infection with virulent genotype I and II isolates,making it a promising candidate for use as a field-deployable antigen detection *** evaluation using field samples and different virus strains is required to further assess the utility of this rapid diagnostic test.

关键词： African swine fever Lateral flow immunoassay Point of care diagnostics

The neuroprotective effects of human growth hormone as a potential treatment for amyotrophic lateral sclerosis

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Neural Regeneration Research 2015年第8期10卷 1201-1203页

作者： Jin-Young Chung Jun-Sang sunwoo Min-Wook Kim Manho Kim Department of Veterinary Internal Medicine and Geriatrics Kangwon National University Department of Neurology Seoul National University Hospital Department of Rehabilitation Medicine College of Medicine The Catholic University of Korea Institute of Catholic Integrative Medicine (ICIM) Incheon St. Mary’s Hospital Protein Metabolism Medical Research Center Seoul National University College of Medicine

Human growth hormone（GH）is a single-chain polypeptide of 191 amino acids that is involved in the regulation of various physiological processes,such as growth and *** is synthesized and secreted by somatotropic cells in the anterior pituitary *** secretion is primarily regulated by a balance between growth hormone-releasing hormone and growth hormone-inhibiting hormone,

关键词： amyotrophic metabolism secretion physiological inhibiting secreted neuronal primarily pituitary polypeptide

Stabilization of the Anatase Phase of Ti_(1-x)Sn_(x)O_(2) (x < 0.5) Nanofibers

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Nano Research 2010年第4期3卷 256-263页

作者： Kandasami Asokan Jae Young Park sunwoo Choi Changhwan Chang Sang Sub Kim School of Materials Science and Engineering Inha UniversityIncheon 402-751Republic of Korea Inter-University Accelerator Centre Aruna Asaf Ali MargNew Delhi 110067India Department of Materials Test and Analysis Research Institute of Industrial Science and TechnologyPohang 790-600Republic of Korea

We experimentally investigate the stabilization of the anatase phase of Ti_(1-x)Sn_(x)O_(2)(x<0.5)nanofibers when synthesized by an electrospinning *** as-spun nanofibers became nano-grained,polycrystalline nanofibers after calcination and the diameters of the nanofibers depend on Sn *** of the anatase phase in Ti-rich compositions and incorporation of Sn ions were confirmed by X-ray diffraction,Raman,X-ray absorption near-edge structure,and photoluminescence(PL)*** from the PL study also demonstrated the tunable nature of the optical properties,with the emission maximum shifting towards higher wavelength with increasing Sn concentration.

关键词： Electrospinning nanofiber Ti_(1-x)Sn_(x)O_(2) X-ray absorption near-edge structure(XANES)

Implementation of a targeted HPV educational program in a population with HIV

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World Journal of Otorhinolaryngology-Head and Neck Surgery 2019年第2期5卷 105-111页

作者： Noel Ayoub John B.sunwoo Heather M.Starmer Department of Otolaryngology Head and Neck SurgeryStanford UniversityPalo AltoCA94305USA

Patients living with human immunodeficiency virus (PLWH) are at higher risk of developing human papillomavirus (HPV)-associated *** prospective,longitudinal study evaluated the baseline knowledge of PLWH regarding HPV infection and its association with head neck cancer,and it aimed to determine whether a focused educational session could promote both short-and long-term knowledge acquisition in this *** subjects participated in an interactive educational session and completed pre-test and immediate and delayed (4-month) post-test *** compared to their pre-test answers,subjects demonstrated significant improvements in all 28 questions immediately following *** preservation was demonstrated 4 months after initial evaluation,with subjects performing significantly better than their pre-test scores in 24 of the original 28 *** results suggest that short,focused,educational programs for PLWH may promote a better understanding of HPV's association with human immunodeficiency virus (HIV) and HPV risk factors,methods of transmission,and prevention.

关键词： Human papillomavirus Human immunodeficiency virus Head and neck cancer Patient education