- Real-Time Systems Scheduling
- Child Development and Digital Technology
- Impact of Technology on Adolescents
- Embedded Systems Design Techniques
- Parallel Computing and Optimization Techniques
- Digital Mental Health Interventions
- Technology Adoption and User Behaviour
- Social and Behavioral Studies
- Disaster Response and Management
- Trauma and Emergency Care Studies
- Cardiac Arrest and Resuscitation
- Immune Cell Function and Interaction
- Mental Health Research Topics
- Advanced Adaptive Filtering Techniques
- Age of Information Optimization
- Aquaculture Nutrition and Growth
- Dermatology and Skin Diseases
- Network Traffic and Congestion Control
- Attention Deficit Hyperactivity Disorder
- Distributed and Parallel Computing Systems
- Soil Mechanics and Vehicle Dynamics
- Vehicle Dynamics and Control Systems
- Acoustic Wave Phenomena Research
- Asthma and respiratory diseases
- Vehicle Noise and Vibration Control
Seoul National University
2018-2024
Hanyang University
2024
Ansan University
2024
National Taiwan University
2023
National University College
2021
New Generation University College
2021
Laboratory of Molecular Genetics
2009
Background Limited awareness, social stigma, and access to mental health professionals hinder early detection intervention of internet gaming disorder (IGD), which has emerged as a significant concern among young individuals. Prevalence estimates vary between 0.7% 15.6%, its recognition in the International Classification Diseases, 11th Revision Diagnostic Statistical Manual Mental Disorders, 5th Edition underscores impact on academic functioning, isolation, challenges. Objective This study...
Delivery of automatic electrical defibrillator (AED) by unmanned aerial vehicle (UAV) was suggested for out-of-hospital cardiac arrest (OHCA). The goal this study is to assess the effect topographic and weather conditions on call AED attach time UAV-AED. We included OHCA patients from 2013 2016 in Seoul, South Korea. developed a UAV-AED flight simulator using information Seoul Euclidean pathway including vertical overcome high-rise structures. used 4 kinds UAV scenarios according or...
The ocular pathology of autoimmune retinopathy is demonstrated in a 62-year-old female patient with systemic lupus erythematosus (SLE) who presented typical clinical retinopathy. Macroscopically, there were multiple depigmented lesions the peripheral retina and choroid scattered pigmentary bone-spickling at equator periphery. Microscopically, generalized loss photoreceptors thinning outer plexiform layer. Many retinal vessels sclerotic occluded, some surrounded by pigment granules RPE cells....
Recent parallel programming frameworks such as OpenCL and OpenMP allow us to enjoy the parallelization freedom for real-time tasks. The creates time versus density tradeoff problem in fluid scheduling, i.e., more reduces thread execution times but increases density. By system-widely exercising this tradeoff, we propose optimal parameter tuning of tasks aiming at maximizing schedulability multicore scheduling. Our experimental study by both simulation actual implementation shows that proposed...
Real-time applications with high computational demand, e.g., autonomous driving, are emerging and their complex nature conforms to a DAG(directed acyclic graph) structure. We propose conditionally optimal parallelization for real-time DAG tasks global EDF, ensuring complete execution of all within the deadline. To achieve this, we formalize monotonic increasing property both tolerance interference option. Using such properties, develop unidirectional search algorithm that can assign options...
Targeting global EDF scheduling, this paper proposes a conditionally optimal algorithm for parallelizing tasks with parallelization freedom. For this, we extend the interference-based sufficient schedulability analysis and derive monotonic increasing properties of both tolerance interference schedulability. Leveraging those properties, propose one-way search based polynomial time complexity. Our extensive experiments through simulation actual implementation show that our proposed approach...
Targeting global EDF scheduling, this article proposes an optimal algorithm for parallelizing tasks with parallelization freedom. For this, we extend the interference-based sufficient schedulability analysis and derive monotonic increasing properties of both tolerance interference schedulability. Leveraging those properties, propose a one-way search–based polynomial time complexity. We present formal proof optimality proposed algorithm. first address single-segment task model then to...
<sec> <title>BACKGROUND</title> Adolescents often experience a heightened incidence of depressive symptoms that can persist without early intervention.[1] Therefore, detection and timely treatment in adolescents are crucial.[2] However, struggle to identify these even when they aware symptoms, seeking help is not always their immediate response.[3] </sec> <title>OBJECTIVE</title> This study aimed explore the relationship between passive digital data, specifically keystroke stylus data...
The DAG task model has gained significant attention and widespread usage for modeling complex real-time applications, particularly in domains like autonomous driving. To effectively utilize these models, research on the schedulability of tasks been catalyzed. Notably, a recent study focused selecting optimal parallelization option scheduling multi-core, global EDF environment. However, we have identified limitations this that hinder its full potential improving schedulability, especially...
<sec> <title>CORRECTION</title> [Digital Phenotypes for Early Detection of Internet Gaming Disorder in Adolescent Students: Explorative Data-Driven Study] In “[Digital Study]” ([JMIR Ment Health 2024;11:e50259 doi: 10.2196/50259]) the authors noted following errors. [ 1. Results section Abstract, sign sentence: Horizontal length strokes (β=–0.21) should be changed to (β=0.21) 2. Figure 1, coefficient strokes:: –0.21 +0.21 3. Table 2, βa 0.21 4. t-test value’s strokes: –2.59 2.59 5. column...
Abstract Background Adolescents often experience a heightened incidence of depressive symptoms, which can persist without early intervention. However, adolescents struggle to identify and even when they are aware these seeking help is not always their immediate response. This study aimed explore the relationship between passively collected digital data, specifically keystroke stylus data via mobile devices, manifestation symptoms. Methods A total 927 first-year middle school students from...
Throughout the last decade, importance of parallel computing has risen greatly to match ever-increasing computational demand. Frameworks such as OpenMP and OpenCL allow easy parallelization tasks into desirable number threads, opening up a chance utilize resources. We call this "parallelization freedom". However, does not come for free, overhead increase with option (i.e. thread each task is parallelized). Thus must be carefully decided better given resource. This paper addresses problem...
<sec> <title>BACKGROUND</title> Limited awareness, social stigma, and access to mental health professionals hinder early detection intervention of internet gaming disorder (IGD), which has emerged as a significant concern among young individuals. Prevalence estimates vary between 0.7% 15.6%, its recognition in the <i>International Classification Diseases, 11th Revision</i> <i>Diagnostic Statistical Manual Mental Disorders, 5th Edition</i> underscores impact on...
In TDMA networks with a large propagation delay, guard time is required to ensure broadcasting without collisions. However, this causes considerable waste, and degrades network performance. paper, we propose Adaptive Guard Time Inter-transmitter Propagation Delay (AGT-IPD) reduce the while ensuring broadcasting. Each transmitter adjusts by using delay for next slot owner. AGT-IPD employs distributed mechanism estimation synchronization. We then conduct trade-off analysis, demonstrate...
Abstract Background Delivery of automatic electrical defibrillator (AED) by unmanned aerial vehicle like drones was suggested to improve early defibrillation for out-of-hospital cardiac arrest. We developed a drone-AED flight virtual simulator using 3-dimensional topographic and meteorological information. The goal this study is assess the effect topography weather on call AED attach time in program. Methods included patients from 2013 2016 Seoul, South Korea, registered Korean arrest...