A5100448788- Underwater Vehicles and Communication Systems
- Robotics and Sensor-Based Localization
- Ferroelectric and Negative Capacitance Devices
- High-Temperature Coating Behaviors
- Advanced Memory and Neural Computing
- Marine Invertebrate Physiology and Ecology
- Semiconductor materials and devices
- Nuclear Materials and Properties
- Water Quality Monitoring Technologies
- Robotic Path Planning Algorithms
- Metallurgical Processes and Thermodynamics
- 3D IC and TSV technologies
- Digital Games and Media
- Educational Systems and Policies
- Underwater Acoustics Research
- Electronic Packaging and Soldering Technologies
- High Temperature Alloys and Creep
- Innovation Diffusion and Forecasting
- Corporate Taxation and Avoidance
- Phase-change materials and chalcogenides
- Optical Coatings and Gratings
- Corporate Social Responsibility Reporting
- Corruption and Economic Development
- Corporate Insolvency and Governance
- Advanced Fiber Optic Sensors
Samsung (South Korea)
2023-2024
ETH Zurich
2023
Korea Advanced Institute of Science and Technology
2011-2022
SK Group (South Korea)
2018-2022
Abstract Neuromorphic computing, an alternative for von Neumann architecture, requires synapse devices where the data can be stored and computed in same place. The three-terminal device is attractive neuromorphic computing due to its high stability controllability. However, nonlinearity on weight update, low dynamic range, incompatibility with conventional CMOS systems have been reported as obstacles large-scale crossbar arrays. Here, we propose compatible gate injection-based field-effect...
This paper examines the effect of national culture on corporate risk-taking worldwide. Specifically, we focus one particular cultural trait – Individualism a dimension linked to and overconfidence. Using sample 48 countries from 1998 2019 (a total 111,697 firm-year observations), document positive relationship between risk-taking. result is robust potential endogeneity concerns, alternative default horizons, an measure for risk-taking, measures Individualism.
We demonstrate a high-performance and cost-effective cross-point memory (CPM) technology for two-deck 128 Gb storage class (SCM). The unit MAT size is 16 Mb consisting of 2z nm 1S1M (one selector one memory) structure that patterned by only two ArF-i steps per deck low cost bit. formidable task self-align etch enabled the use state-of-the-art etching integration technology, which otherwise easily leads to hard fail or poor cell characteristics reliabilities. New phase change materials...
Recently, owing to changes in weather conditions, cyanobacterial blooms, also known as harmful algal blooms (HABs), have caused serious damage the ecosystems of rivers and lakes by producing cyanotoxins. In this paper, for removal HABs, an bloom robotic system (ARROS) is proposed. The ARROS has been designed with a catamaran-type unmanned surface vehicle (USV) algae-removal device attached below. addition, electrical control systems guidance, navigation, (GNC) are implemented on remove...
In this work, we report a planar Si-based ferroelectric field-effect transistor (FEFET) characterized by high memory window (MW) of 4.79 V, ten-year retention, and pass disturb-free characteristics. This achievement is realized through the use 20-nm-thick laminated Hf <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$_{{0}.{5}}$ </tex-math></inline-formula> Zr0.5O2 (L-HZO) film with Al2O3 (AO)-insertion...
Underwater environment has a noisy medium and limited light source, so underwater vision disadvantages of the detection range poor visibility. However it is still attractive in close detections, especially for navigation. Thus, this paper, vision-based object (template matching) tracking (mean shift tracking) techniques robots using artificial objects have been studied. Also, we propose novel weighted correlation coefficient feature-based color-based approaches to enhance performance...
In this study, we present an analytical equation for describing the memory window of ferroelectric field-effect transistors (FeFETs). The is derived based on effect oxide charge threshold voltage shift transistor and can be expressed by simpler parameters, such as quantity polarization switching trapped charge. We demonstrate that in quantitative agreement with results numerical calculations using a technology computer-aided design simulation tool, which confirms validity equation. Our show...
Nowadays, as the building structures are getting taller and taller, importance of maintenance or inspection these is being increased. However, it has some problems due to lack professional manpower there a risk in maintaining those areas that hard reach, besides high cost. The unmanned wall-climbing robots for reach have been researched solve problems. infrastructure-based payload safety but need infrastructure should be installed on target structure. not preferred by architects since can...
At present, unmanned aerial vehicles (UAVs) are the primary platforms widely used for environmental monitoring. The advantage of UAV-type surveillance system is its low-cost with high observation performance. Using this system, we can extend workable area jellyfish removal system. proposed observes on surface sea while flying, and recognize a herd using deep learning. preliminary results show that improves efficient operation.
Autonomous underwater vehicles (AUVs) are usually equipped with one or more optical cameras to obtain visual data of environments. The camera can also be used estimate the AUV's pose information, along various navigation sensors such as inertial measurement unit (IMU), Doppler velocity log (DVL), depth sensor, and so on. In this paper, we propose a vision-based simultaneous localization mapping (SLAM) AUVs, where artificial landmarks help sensing forward downward looking cameras. Three types...
This paper presents experiments on vision-based localization of an autonomous underwater vehicle (AUV) using graph-based simultaneous and mapping (SLAM). Relative range bearing values each landmark are obtained from image processing results. And a graph structure is built the detection results dead-reckoning data AUV. The structured optimized by SLAM algorithm. Finally, performance compared to EKF-based result.
In this paper, we propose the structure of 3D vertical cross point memory (3DVXP) having byte-addressability and discuss possible challenges requirements from structural view. The necessity a poly-Si transistor for column selection feasibility current drivability are presented. driven parasitic resistance capacitance problems on device performances discussed, resulting trade-off between operation speed cell density is provided. We also demonstrate advantage selectable memory, based...
The application of laser-induced breakdown spectroscopy (LIBS) to elemental depth profile analysis high temperature oxidation behavior Ni-based superalloys is presented. An test two Ni-base superalloys, Alloy 617 and Haynes 230, be considered as the most promising candidates for very reactor (VHTR), was carried out in dry air at 900 °C. A duplex external oxide layer MnCr2O4 Cr2O3 with internal Al2O3 oxides mainly formed both alloys. In addition, 617, Ni Ti enriched were observed surface...
In this paper, a novel robot system for jellyfish reconnaissance and removal using unmanned aerial vehicle (UAV) surface (USV) is introduced. recent years, overpopulated are threatening ocean ecosystem as well damaging to ocean-related industries such fishery, seaside power plants, casualties. The damage estimated about 300M USD per year in South Korea. To resolve problem, net towed by trawl boats few of devices prevent the influx have been developed. However, most these limited usage due...