A5012499924- Water Quality Monitoring Technologies
- Pleural and Pulmonary Diseases
- Advanced Optical Imaging Technologies
- Cardiac Arrest and Resuscitation
- Electron and X-Ray Spectroscopy Techniques
- Engineering Applied Research
- Education and Learning Interventions
- Energy and Environmental Systems
- Ion-surface interactions and analysis
- Trauma Management and Diagnosis
- Advanced Radiotherapy Techniques
- Semiconductor Lasers and Optical Devices
- Data Management and Algorithms
- Innovation in Digital Healthcare Systems
- Optical Systems and Laser Technology
- Advancements in Semiconductor Devices and Circuit Design
- Structural Response to Dynamic Loads
- Virtual Reality Applications and Impacts
- Lung Cancer Diagnosis and Treatment
- Transportation Safety and Impact Analysis
- Material Properties and Applications
- Semiconductor materials and interfaces
- Silicon and Solar Cell Technologies
- Semiconductor materials and devices
- Digital Holography and Microscopy
Pusan National University
2023-2024
Pukyong National University
2023-2024
Pusan National University Hospital
2022-2023
Seoul National University of Science and Technology
2021-2023
Busan University of Foreign Studies
2018
Chungbuk National University
2017
Incheon National University
2016
Korea University of Technology and Education
2015
Kongju National University
2014
Inha University
2005
In these days, Cloud computing is provided by various service ways, and it possible that practical implement virtualized environment. With developing of cloud techniques, many companies propose the different type platforms through research relevant technique. Among other platforms, we are going to talk about performance comparison analysis Linux Container Virtual Machine in this paper. We built environment first on Docker which based Hypervisor Machine, analyzed each size, Boot speed, CPU...
In this study, ultrafine nickel oxide nanoparticles (NiO NPs) were well synthesized using a simple wet chemical method under low temperature, 300 °C. An Ni(OH)2 precursor was precipitated by dropping NH4OH into an Ni(Ac)2 solution. TG-DTA showed that the weight of precipitate decreases until °C; therefore, heat-treated at X-ray diffraction (XRD) patterns indicated hexagonal-structured NiO NPs with (200) preferred orientation synthesized. addition, BET specific surface area (SSA) and HRTEM...
Most power companies are wasting hot water in the sea, which is called wasted warm energy. This research attempts to develop thermal energy management system of that utilized a fish farming systems based on Internet Things(IoT). It had developed remote control and monitoring smart farm by using IoT technology. In this system, we proposed build has function sensing several sensors such as; oxygen, temperature, pH, level. also provide close loop flow aquarium controlled microcontroller...
Abstract Pulmonary contusion is an important risk factor for respiratory complications in trauma patients. Hence, we aimed to determine the relationship between ratio of pulmonary volume total lung and patient outcomes predictability complications. We retrospectively included 73 patients with a on chest computed tomography (CT) from 800 admitted our facility January 2019 2020. Chest injury severity was expressed as by quantifying CT. The cut-off value 80%. Among (77% males, mean age: 45.3...
Automatic age estimation using panoramic dental radiographic images is an important procedure for forensics and personal oral healthcare. The accuracies of the have increased recently with advances in deep neural networks (DNN), but DNN requires large sizes labeled dataset which not always available. This study examined whether a network able to estimate tooth ages when precise information given. A model was developed applied image augmentation technique. total 10,023 original were...
A mobile three-dimensional image acquisition and reconstruction system using a computer-generated integral imaging technique is proposed. depth camera connected to the device acquires color data of real object simultaneously, an elemental array generated based on original information for object, with lens specifications input into device. The visualization reconstructed display through optical or digital methods. proposed implemented successfully experimental results certify that effective...
Background and objectiveInferior vena cava filters have been shown to be effective in preventing deep vein thrombosis its secondary complication, pulmonary embolism, thereby reducing the high mortality rate. Although inferior evolved, specific complications like thrombosis-induced worsening recurrent embolism continue pose challenges. This study analyzes effects of geometric parameter variations filters, which a significant impact on thrombus formation inside filter, capture, dissolution,...
Most power companies are wasting hot water in the sea, called wasted warm energy. This research attempts to develop thermal energy management system of that is utilized a fish farming systems based on Internet Things(IoT). It had developed remote control and monitoring smart farm by using IoT technology. In this system, we proposed build has function sensing several sensors such as; oxygen, temperature, pH, level. also provide close loop flow aquarium which controlled microcontroller...
In this work, we proposed a novel computer modeling and simulation technique for motion tracking of lung bronchi (or tumors) under respiration using 9 cases computed tomography (CT)-based patient-specific finite element (FE) models Ogden's hyperelastic model. the fabrication FE respiratory system, various organs such as mediastinum, diaphragm, thorax that could affect motions during breathing were considered. To describe nonlinear material behavior parenchyma, comparative biaxial...
We investigated the effects of pulsed gate bias on degradation amorphous indium gallium zinc oxide (a-InGaZnO) thin film transistors (TFTs). The waveform composed 0 V and 20 produced little degradation, but -20 a considerable turn-on current in transfer characteristics. Those instabilities were found mostly TFTs which concentration Zn is higher than other metallic components (In, Ga). In order to explain anomalous behaviors, we propose possible model different from conventional charge...
Renewable energy sources which are gaining popularity over conventional resources mostly produce intermittent power as they fall under the influence of natural phenomena daily cycle or weather conditions. However, worldwide remarkable growth electricity generation from renewable in recent years has resulted decentralized production posing network load stability problems, requires proper storage. Therefore, storage system can make more efficient utilization energies available and hence it...
This paper researches a way of detecting fish robots moving in an aquarium. The robot was designed and developed for interactions with humans aquariums. It studied merely to detect object aquarium because we need find the positions robots. intention is recognize location robotic using image processing technique video camera. method used obtain velocity each pixel image, assumes constant frame by comparing sequential frames. By this positional data, compute distance between mathematical...
In this paper, we implement a content authoring and cloud system for cloud-based smart learning. With the advent of smartphone mobile devices such as tablets, educational paradigm is also changing. Was using computer to aid in learning e-learning started ICT education are evolving Over variety, recent years, combines social learning, concept Smart Cloud Education Services Learning was gives rise term. free running always knowledge uploaded by anyone, anywhere, can be shared with other users....
본 연구에서는, 발포 폴리프로필렌의 충격에너지 흡수특성이 충격체 질량과 속도중 어느 변수에 더 많은 영향을 받는 지 고찰해 보기 위하여, 속도에 변화를 주어 5개의 조합을 만들고, 이 조합들이 동일한 초기 조건(100 J 및 200 J)이 될 수 있도록, 값을 선정한 뒤, 충격시험을 수행하여, 흡수특성을 실험적으로 규명하였다. 또한 기본적인 특성을 파악하기 준정적 시험(Quasistatic test)도 수행되었다. 시험은 MTS 858을 이용하였고, 위해, Instron dynatup 9250 HV가 사용되었다. 충격시험결과, 폴리프로필렌은 비해 질량에 것으로 나타났다. In the present study, impact tests were carried out to investigate crashworthy behaviour of expanded polypropylene under constant incident energy (100 and J) with five...
발포 폴리우레탄의 변형거동을 설명하기 위해 제안된 구성방정식을 폴리프로필렌에 적용하였다. 이 방정식은 7개의 매개변수를 갖고 있으며, 그중 5개의 변수는 기준 변형률속도에서 준정적 압축시험을 하여 얻은 결과를 커브 피팅하여 구하고, 나머지 두 변형률 속도를 다르게 한 압축시험으로부터 구한다. 이렇게 구한 응력-변형률 방정식이 높은 변형률속도에서도 유효한지 알기 충격시험으로부터 결과와 비교하였으며 30배와 40배로 발포된 폴리프로필렌 폼 시편에 대하여 각각 시행하였다. A constitutive equation, which was suggested for describing the compressive deformation behaviour of expanded polyurethane, applied to polypropylene under dynamic loading. This equation consists seven parameters, five are obtained...
향후 제작 될 솔레노이드 구조의 방향을 제시하고자 실험 및 유동 특성에 대한 비교 분석 연구가 진행 되어졌다. 실험값과 해석값의 분석은 ANSYS CFD와 전자식 측정 기구를 이용하여 수행하였다. 3D 모델링은 CATIA V5R18을 이용하였으며, 유동구간의 격자 생성은 ICEM CFD 프로그램을 사용하였다. 유동해석 수치해석 프로그램인 CFD를 실험값에 검증이 진행되었다. 실험값을 통해 정밀 필터구간에서 나타난 유량은 <TEX>$0-10{\ell}/min$</TEX> 으로 나타났으며 유동해석결과 최대 <TEX>$0.18{\ell}/min$</TEX>로 나타났다. 해석 결과와 실험값의 비교분석을 유동환경에 보다 효율적인 구조를 제시 할 수 있었다. Comparative analysis study of the flow characteristics and experiment was done to try present orientation solenoid structure be...
본 연구는 낙동강 하구 델타 지역의 상부퇴적사질토에 대한 기초적인 연구로 퇴적사질토의 물리적 특성과 세립분 함유율 및 상대밀도에 따른 전단강도와 투수특성에 대해 알아보았다. 전답토층 하부연약점토층과 인접한 구간에서 퇴적사질토는 함유량이 높고, 그 외 구간(일부제외)에서는 5%내외의 세립분을 함유한 것으로 나타났다. 비중은 심도나 위치에 상관없이 거의 일정하고, 퇴적환경에 0.1~0.4mm의 가는 모래가 주로 분포하고, 전 일라이트 점토광물이 검출되었다. 재성형한 상부퇴적사질토 시료의 직접전단시험 결과 상대밀도가 증가할수록 내부마찰각 점착력은 증가하였다. 하지만 상대밀도의 증가에 내부마찰각과 점착력의 증가는 그렇게 크지 않은 반면 함유율의 영향이 크게 나타났는데 모래에 세립분이 내부마찰각은 감소하고, 선형적으로 증가하는 경향이 상부퇴적사질토의 투수계수는 상대밀도 함유율이 낮아지는데 15% 이상의 함유된 모래의 경우 영향을 받지 않는 This study was a basic...
The technique for suppressing the zero-order term in off-axis digital holography utilizing spatial-carrier frequency analysis and phase-shifting holography. feasibility of proposed approach was demonstrated by numerical optical reconstruction results.