A5082638313- CCD and CMOS Imaging Sensors
- Advanced Optical Sensing Technologies
- Advanced Fluorescence Microscopy Techniques
- Analytical Chemistry and Sensors
- Robotics and Sensor-Based Localization
- Pelvic floor disorders treatments
- Metaheuristic Optimization Algorithms Research
- Evolutionary Algorithms and Applications
- Advanced Multi-Objective Optimization Algorithms
- Magnetic and transport properties of perovskites and related materials
- Video Surveillance and Tracking Methods
- Advanced Vision and Imaging
- Robotic Path Planning Algorithms
- Electronic and Structural Properties of Oxides
- Superconducting Materials and Applications
- Advanced Memory and Neural Computing
- Electrical and Thermal Properties of Materials
- Urinary Tract Infections Management
- Advanced Neural Network Applications
- Advanced Radiotherapy Techniques
- Physics of Superconductivity and Magnetism
- Taxation and Compliance Studies
- Banking stability, regulation, efficiency
- Tissue Engineering and Regenerative Medicine
- E-Government and Public Services
Hanoi University of Science and Technology
2018-2024
Vietnam Posts and Telecommunications Group (Vietnam)
2024
Posts and Telecommunications Institute of Technology
2024
Universitätsklinikum Gießen und Marburg
2024
University of Chicago
2022
National Economics University
2022
FPT University
2021
Hanoi Medical University
2021
Bạch Mai Hospital
2021
Laboratoire des applications Thérapeutiques des Ultrasons
2020
Early fire detection and alarm are significantly important to reduce the losses caused by fire. Conventional methods in using smoke heat detectors have disadvantages accuracy, latency as well area. In this paper, we propose implement a real-time solution for large area surveillance unmanned aerial vehicle with an integrated visual system. The system includes low-cost camera, light weight companion computer, flight controller localization telemetry modules. To achieve detection, Single Shot...
The frame rate of the digital high-speed video camera was 2000 frames per second (fps) in 1989, and has been exponentially increasing. A simulation study showed that a silicon image sensor made with 130 nm process technology can achieve about 1010 fps. seems to approach upper bound. Rayleigh proposed an expression on theoretical spatial resolution limit when lenses approached limit. In this paper, temporal sensors theoretically analyzed. It is revealed mainly governed by mixing charges...
Endovascular navigation is a crucial aspect of minimally invasive procedures, where precise control curvilinear instruments like guidewires critical for successful interventions. A key challenge in this task accurately predicting the evolving shape guidewire as it navigates through vasculature, which presents complex deformations due to interactions with vessel walls. Traditional segmentation methods often fail provide accurate real-time predictions, limiting their effectiveness highly...
Forestry machines operated in forest production environments face challenges when performing manipulation tasks, especially regarding the complicated dynamics of underactuated crane systems and heavy weight logs to be grasped. This study investigates feasibility using reinforcement learning for forestry manipulators grasping lifting wood autonomously. We first build a simulator Mujoco physics engine create realistic scenarios, including modeling with 8 degrees freedom from CAD data different...
Light in flight was captured by a single shot of newly developed backside-illuminated multi-collection-gate image sensor at frame interval 10 ns without high-speed gating devices such as streak camera or post data processes. This paper reports the achievement and further evolution toward theoretical temporal resolution limit 11.1 ps derived authors. The analysis revealed conditions to minimize resolution. Simulations show that designed following specified fabricated existing technology will...
The paper summarizes the evolution of Backside-Illuminated Multi-Collection-Gate (BSI MCG) image sensors from proposed fundamental structure to development a practical ultimate-high-speed silicon sensor. A test chip BSI MCG sensor achieves temporal resolution 10 ns. authors have derived expression limit photoelectron conversion layers. For sensors, is 11.1 ps. By considering theoretical derivation, high-speed designed can achieve frame rate close limit. However, some conditions conflict with...
In contemporary scenarios, privacy is paramount, especially in applications such as video interviews. This study introduces a privacy-focused real-time face and hair swapping method designed to conceal identity while retaining essential facial attributes of the original subject. Unlike conventional methods that rely on reference image realistic person, our proposed eliminates this need for enhanced privacy. Instead, work use synthetic generated by Generative Adversarial Networks (GANs),...
Background The prevalence of risk factors for poor outcomes from aneurysmal subarachnoid hemorrhage (SAH) varies widely and has not been fully elucidated to date in Vietnam. Understanding the prognosis SAH is important reduce aim this study, therefore, was investigate rate outcome at 90 days ictus associated country. Methods We performed a multicenter prospective cohort study patients (≥18 years) presenting with three central hospitals Hanoi, Vietnam, August 2019 2020. collected data on...
The paper presents an ultra-high-speed image sensor for motion pictures of reproducible events emitting very weak light. is backside-illuminated. Each pixel equipped with multiple collection gates (MCG) at the center front side. gate connected to in-pixel large memory unit, which can accumulate signals captured by repetitive imaging. combination backside illumination, signal accumulation, and slow readout from storage after capturing operation offers a high sensitivity. Pipeline transfer...
This paper aims to examine whether cash holding can enhance the financial stability of firms under impact Covid-19 pandemic. We utilize quarterly data 285 Vietnamese listed from quarter 1-2011 3-2020 for our analyses. The results reveal that has a positive effect on during pandemic crisis. Additionally, holdings two quarters ahead also have significant firms' stability. find is particularly crucial are more vulnerable pandemic, examples headquartered in big cities, Consumer Discretionary,...
The theoretical temporal resolution limit tT of a silicon photodiode (Si PD) is 11.1 ps. We call "super resolution" the that shorter than limit. To achieve this resolution, Germanium selected as candidate material for (Ge visible light since absorption coefficient Ge wavelength several tens times higher Si, allowing very thin PD. On other hand, saturation drift velocity electrons in about 2/3 Si. ratio suggests an ultra-short propagation time However, diffusion four Therefore, Monte Carlo...
Using the hypervolume indicator to guide search of evolutionary multi-objective algorithms has become very popular in recent years. We contribute theoretical understanding these by carrying out rigorous runtime analyses. consider variants problems OneMax and LeadingOnes called OMM LOTZ, respectively, investigate hypervolume-based with population sizes that do not allow coverage entire Pareto front. Our results show LOTZ is easier optimize than for which contrary on their single-objective...
Temporal resolution and crosstalk of an ultra-high-speed image sensor operating at 1 Gfps are analyzed by using Monte Carlo simulation. An impulse response method is proposed to analyze cancel large involved in output signals the sensor. The backside-illuminated (BSI) with multi-collection-gate (MCG) central area a pixel on front side. Signal electrons generated incident light near back side travel collected collection gates. time path signal electron randomly distribute due randomness...
Vehicle to (V2V) and Vehicles Infrastructure (V2I) are key communication technologies for intelligent transportation system (ITS) exchange the transparent information such as GPS positions, velocities, traffic status environment conditions between vehicles well infrastructure on road. These support preventing accidents by releasing a warning reducing congestion. In this paper, design implementation of small-size WiFi-based prototype V2V-V2I unit low speed is presented. WiFi, popular wireless...
Combining a vision module inside closed-loop control system for \emph{seamless movement} of robot in manipulation task is challenging due to the inconsistent update rates between utilized modules. This even more difficult dynamic environment, e.g., objects are moving. paper presents \emph{modular} zero-shot framework language-driven (dynamic) through with real-time trajectory replanning and an online 6D object pose localization. We segment within $\SI{0.5}{\second}$ by leveraging language...
In recent years, deep learning methodologies have been increasingly applied to the intricate challenges of visual-inertial odometry (VIO), especially in scenarios with rapid movements and scenes lacking clear structure. This paper introduces a novel hybrid approach that leverages inherent strengths traditional VIO techniques, while harnessing potential advanced machine technologies. By seamlessly integrating an iterated extended Kalman filter our systematically takes into account...
Zielsetzung: In dieser Studie wurde die Rolle der Autophagie in Embryonalentwicklung untersucht.