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  1. AU=Kim Donghyun AU=Kim Donghyun
  2. AU="Weisburd, Ben"
  3. AU="van den Berg, Linda M"
  4. AU="Kurochkina, Yu D"
  5. AU="H Cao"
  6. AU="Elias, Rui"
  7. AU="Hofstaedter, Ferdinand"
  8. AU="Ross, Ashley E"
  9. AU="Luque Alarcón, Mónica"

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  1. Buch ; Online: Magnetic Resonance Spectroscopy

    Kim, Donghyun

    2012  

    Schlagwörter Radiology
    Sprache Englisch
    Umfang 1 electronic resource (276 pages)
    Verlag IntechOpen
    Dokumenttyp Buch ; Online
    Anmerkung English
    HBZ-ID HT030645141
    ISBN 9789535143376 ; 9535143379
    Datenquelle ZB MED Katalog Medizin, Gesundheit, Ernährung, Umwelt, Agrar

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  2. Artikel ; Online: Quadruped robots venture into the wild with open eyes.

    Kim, Donghyun

    Science robotics

    2022  Band 7, Heft 62, Seite(n) eabn6798

    Abstract: Perception-based locomotion learning accelerates the real-world deployment of quadruped robots. ...

    Abstract Perception-based locomotion learning accelerates the real-world deployment of quadruped robots.
    Mesh-Begriff(e) Locomotion ; Robotics/instrumentation
    Sprache Englisch
    Erscheinungsdatum 2022-01-19
    Erscheinungsland United States
    Dokumenttyp Journal Article ; Comment
    ISSN 2470-9476
    ISSN (online) 2470-9476
    DOI 10.1126/scirobotics.abn6798
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  3. Artikel ; Online: Exploring spatial distribution of social vulnerability and its relationship with the Coronavirus disease 2019: the Capital region of South Korea.

    Kim, Donghyun

    BMC public health

    2022  Band 22, Heft 1, Seite(n) 1883

    Abstract: Background & objective: The ongoing coronavirus disease 2019 (COVID-19) pandemic continues to cause death and socioeconomic problems worldwide. This study examined the spatial distribution of social vulnerability to COVID-19 and its relationship with ... ...

    Abstract Background & objective: The ongoing coronavirus disease 2019 (COVID-19) pandemic continues to cause death and socioeconomic problems worldwide. This study examined the spatial distribution of social vulnerability to COVID-19 and its relationship with the number of confirmed COVID-19 cases in 2020, focusing on the Capital region of South Korea.
    Methods: A traditional social vulnerability index (SVI), healthy SVI, and the difference of each SVI were constructed in 2015 and 2019. The traditional SVI was constructed across five domains: age, socioeconomic disadvantage, housing, income, and environment. The healthy SVI domains were: prevention, health-related habits, chronic disease, healthcare infrastructure, and mortality. The spatial distribution of the traditional SVI, healthy SVI, and confirmed cases of COVID-19 was explored using ArcGIS 10.5. Pearson correlation was used to identify the relationship between confirmed COVID-19 cases and the two SVIs and their changes between 2015 and 2019. Four multiple linear regression models were used to identify the impact of the changes of the two SVIs on the confirmed COVID-19 cases for the three episodes and total period with control of population using STATA/MP 16.1.
    Results: Confirmed COVID-19 cases were concentrated in a specific area of the Capital region. The traditional SVI was more vulnerable in the outer regions of the Capital region, and some central, western, and eastern areas reflected an increase in vulnerability. Healthy SVI was more vulnerable in the northern part of the Capital region, and increase in vulnerability showed in some central areas above Seoul. By multiple regression with the population controlled, the difference of the traditional SVI between 2015 and 2019 showed a positive relationship with the confirmed COVID-19 cases in all models at a significance level of 0.05, and the 2019 integrated SVI showed a negative relationship with confirmed COVID-19 cases in all models.
    Conclusions: The results of this study showed that the confirmed COVID-19 cases are associated with increased traditional SVI vulnerability between 2015 and 2019 and have a high positive relationship with the spread of COVID-19. Policy efforts are needed to reduce confirmed COVID-19 cases among the vulnerable in regions with relatively increased traditional SVI.
    Mesh-Begriff(e) COVID-19/epidemiology ; Humans ; Income ; Pandemics/prevention & control ; Republic of Korea/epidemiology ; Social Vulnerability
    Sprache Englisch
    Erscheinungsdatum 2022-10-10
    Erscheinungsland England
    Dokumenttyp Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2041338-5
    ISSN 1471-2458 ; 1471-2458
    ISSN (online) 1471-2458
    ISSN 1471-2458
    DOI 10.1186/s12889-022-14212-7
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  4. Artikel ; Online: Transport and retention of positively charged zinc oxide nanoparticles in saturated porous media: Effects of metal oxides and clays.

    Hwang, Gukhwa / Kim, Donghyun

    Environmental pollution (Barking, Essex : 1987)

    2024  Band 351, Seite(n) 124007

    Abstract: The effects of metal oxides and clays on the transport of zinc oxide nanoparticles (ZnO-NPs) in saturated porous media were investigated under different ionic strength (IS) conditions. We studied the transport and retention behavior of ZnO-NPs for ... ...

    Abstract The effects of metal oxides and clays on the transport of zinc oxide nanoparticles (ZnO-NPs) in saturated porous media were investigated under different ionic strength (IS) conditions. We studied the transport and retention behavior of ZnO-NPs for different types of porous media (untreated, acid treated, and acid-salt treated sand). The selected untreated sand was used as a representative sand, coated with both metal oxide and clay. The acid treated and acid-salt-treated sands were used and compared to investigate the effects of clays on the surface of the sand. In addition, the effects of clay particles in bulk solutions on the mobility and retention of ZnO-NPs were observed using bentonite as a representative clay particle. We found that the increased mobility of positively charged ZnO-NPs can be attributed to increasing charge heterogeneity of silica sand with metal oxides (mainly, iron oxide) and clays in untreated sand. No breakthrough of ZnO-NP was observed for acid-treated (presence of clays and absence of metal oxides) and acid-salt-treated sand (absence of both metal oxide and clays). Most of the injected ZnO-NPs were deposited on the surface of the sand near the column inlet. The transport of bentonite-facilitated ZnO-NPs was improved at the lowest IS (0.1 mM) (∼20%), whereas there was no difference in the mobility of ZnO-NPs at high IS solutions (1 mM and 10 mM). In particular, the breakthrough amount improved with increasing bentonite concentration. Classical Derjaguin-Landau-Verwey-Overbeek interactions help explain observed interactions between ZnO-NPs and sand as well as bentonite and sand.
    Sprache Englisch
    Erscheinungsdatum 2024-04-25
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 280652-6
    ISSN 1873-6424 ; 0013-9327 ; 0269-7491
    ISSN (online) 1873-6424
    ISSN 0013-9327 ; 0269-7491
    DOI 10.1016/j.envpol.2024.124007
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  5. Artikel: A review of carbon mineralization mechanism during geological CO

    Kim, Kyuhyun / Kim, Donghyun / Na, Yoonsu / Song, Youngsoo / Wang, Jihoon

    Heliyon

    2023  Band 9, Heft 12, Seite(n) e23135

    Abstract: ... The ... ...

    Abstract The CO
    Sprache Englisch
    Erscheinungsdatum 2023-12-02
    Erscheinungsland England
    Dokumenttyp Journal Article ; Review
    ZDB-ID 2835763-2
    ISSN 2405-8440
    ISSN 2405-8440
    DOI 10.1016/j.heliyon.2023.e23135
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  6. Artikel ; Online: Fabrication of CP-Ti structure with controllable wettability using powder bed fusion and eco-friendly post-process.

    Oh, Won-Jung / Kim, Donghyun / Kim, Dong-Hyun / Chun, Doo-Man / Ha, Jeonghong / Kim, Chung-Soo

    Scientific reports

    2024  Band 14, Heft 1, Seite(n) 4633

    Abstract: Hydrophobic surfaces have a wide range of applications, such as water harvesting, self-cleaning, and anti-biofouling. However, traditional methods of achieving hydrophobicity often involve the use of toxic materials such as fluoropolymers. This study ... ...

    Abstract Hydrophobic surfaces have a wide range of applications, such as water harvesting, self-cleaning, and anti-biofouling. However, traditional methods of achieving hydrophobicity often involve the use of toxic materials such as fluoropolymers. This study aims to create controllable wettability surfaces with a three-dimensional geometry using a laser base powder bed fusion (PBF) process with commercially pure titanium (CP-Ti) and silicone oil as non-toxic materials. The optimal PBF process parameters for fabricating micropillar structures, which are critical for obtaining the surface roughness necessary for achieving hydrophobic properties, were investigated experimentally. After fabricating the micropillar structures using PBF, their surface energy was reduced by treatment with silicone oil. Silicone oil provides a low-surface-energy coating that contributes to the water-repellent nature of hydrophobic surfaces. The wettability of the treated CP-Ti surfaces was evaluated based on the diameter of the pillars and the space between them. The structure with the optimal diameter and spacing of micropillars exhibited a high contact angle (156.15°). A pronounced petal effect (sliding angle of 25.9°) was achieved because of the morphology of the pillars, indicating the controllability of wetting. The micropillar diameter, spacing, and silicone oil played crucial roles in determining the water contact and sliding angle, which are key metrics for surface wettability.
    Sprache Englisch
    Erscheinungsdatum 2024-02-26
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-024-54958-1
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  7. Artikel ; Online: Spatial relationship between COVID-19 and previous infectious disease outbreaks

    Donghyun Kim / Jae Sik Jeon

    Heliyon, Vol 9, Iss 5, Pp e15635- (2023)

    Evidence from South Korea

    2023  

    Abstract: As the novel coronavirus disease (COVID-19) has been rapidly spreading across the world, scholars have started paying attention to risk factors that affect the occurrence of the infectious disease. While various urban characteristics have been shown to ... ...

    Abstract As the novel coronavirus disease (COVID-19) has been rapidly spreading across the world, scholars have started paying attention to risk factors that affect the occurrence of the infectious disease. While various urban characteristics have been shown to influence the outbreak, less is known about whether COVID-19 is more likely to be transmitted in areas with a greater number of incidents of previous infectious diseases. This study examines a spatial relationship between COVID-19 and previous infectious diseases from a spatial perspective. Using the confirmed cases of COVID-19 and other types of infectious diseases across South Korea, we identified spatial clusters through regression and spatial econometric models. We found that COVID-19-confirmed case rates tended to be clustered despite no similarity with the spatial patterns of previous infectious diseases. Existing infectious diseases from abroad were associated with the occurrence of COVID-19, while the effect diminished after controlling for the spatial effect. Our findings highlight the importance of regional-level infectious disease surveillance for the effective prevention and control of COVID-19.
    Schlagwörter COVID-19 ; Emerging infectious diseases ; Spatial econometric model ; Spatial data analysis ; Science (General) ; Q1-390 ; Social sciences (General) ; H1-99
    Thema/Rubrik (Code) 610 ; 630
    Sprache Englisch
    Erscheinungsdatum 2023-05-01T00:00:00Z
    Verlag Elsevier
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  8. Artikel ; Online: Study of Plans to Ensure the Sustainability of Urban Farming in Apartment Complexes

    Donghyun Kim / Hyunnam Sim

    Sustainability, Vol 15, Iss 24, p

    2023  Band 16797

    Abstract: Urban farming carries environmental, economic, and social benefits. However, it is challenging to secure agricultural land in Republic of Korean cities because of on cost constraints, resulting in low levels of engagement in urban farming. In this study, ...

    Abstract Urban farming carries environmental, economic, and social benefits. However, it is challenging to secure agricultural land in Republic of Korean cities because of on cost constraints, resulting in low levels of engagement in urban farming. In this study, we attempted to explore the novel possibility of targeting apartments as urban farming sites. Despite the high ratio of apartments to other types of homes in Korean cities, there have been limited studies examining urban farming in apartment complexes. We derived indicators of urban farming initiation and ranked their importance. Based on the results, we propose policy directions for facilitating urban farming in apartments. Indicators were selected in three steps. First, initial indicators were obtained through reviews of urban farming theories, a literature review, and analysis of media articles. Second, the indicators were preliminarily categorized by type. Third, in-depth interviews and pilot surveys were conducted to select and stratify the final indicators. The importance of the indicators was analyzed using the analytic hierarchy process. Per our results, “public funding,” and “technical and management support” are the most important factors for facilitating urban farming in apartment complexes. These findings indicate four policy directions and important implications based on their expected effects.
    Schlagwörter sustainability ; urban farming ; urban agriculture ; apartment complex ; analytic hierarchy process (AHP) ; Environmental effects of industries and plants ; TD194-195 ; Renewable energy sources ; TJ807-830 ; Environmental sciences ; GE1-350
    Thema/Rubrik (Code) 720
    Sprache Englisch
    Erscheinungsdatum 2023-12-01T00:00:00Z
    Verlag MDPI AG
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  9. Artikel ; Online: Why Uncertainty in Deep Learning for Traffic Flow Prediction Is Needed

    Mingyu Kim / Donghyun Lee

    Sustainability, Vol 15, Iss 23, p

    2023  Band 16204

    Abstract: Recently, traffic flow prediction has gained popularity in the implementation of intelligent transportation systems. Most of the existing models for traffic flow prediction focus on increasing the prediction performance and providing fast predictions for ...

    Abstract Recently, traffic flow prediction has gained popularity in the implementation of intelligent transportation systems. Most of the existing models for traffic flow prediction focus on increasing the prediction performance and providing fast predictions for real-time applications. In addition, they can reveal the integrity of a prediction when an actual value is provided. However, they cannot explain prediction uncertainty. Uncertainty has recently emerged as an important problem to be solved in deep learning. To address this issue, a Monte Carlo dropout method was proposed. This method estimates the uncertainty of a traffic prediction model. Using 5,729,640 traffic data points from Seoul, the model was designed to predict both the uncertainty and measurements. Notably, it performed better than the LSTM model. Experiments were conducted to show that the values predicted by the model and their uncertainty can be estimated together without significantly decreasing the performance of the model. In addition, a normality test was performed on the traffic flow uncertainty to confirm the normality, through which a benchmark for uncertainty was presented. Following these findings, the inclusion of uncertainty provides additional insights into our model, setting a new benchmark for traffic predictions, and enhancing the capabilities of intelligent transportation systems.
    Schlagwörter traffic flow prediction ; Monte Carlo dropout ; temporal convolutional network ; uncertainty ; Environmental effects of industries and plants ; TD194-195 ; Renewable energy sources ; TJ807-830 ; Environmental sciences ; GE1-350
    Thema/Rubrik (Code) 690
    Sprache Englisch
    Erscheinungsdatum 2023-11-01T00:00:00Z
    Verlag MDPI AG
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  10. Artikel: Impact of Exercise Training on Survival Rate and Neural Cell Death in Sepsis Through the Maintenance of Redox Equilibrium.

    Kim, Taewan / Jin, Youngyun / Cho, Jinkyung / Kim, Donghyun

    International neurourology journal

    2024  Band 28, Heft 1, Seite(n) 22–32

    Abstract: Purpose: Sepsis-related deaths occur during both the early proinflammatory and the late immunosuppressive phases of the condition. The balance of pro- and anti-inflammatory responses is influenced by damaged cells that die via either proinflammatory ... ...

    Abstract Purpose: Sepsis-related deaths occur during both the early proinflammatory and the late immunosuppressive phases of the condition. The balance of pro- and anti-inflammatory responses is influenced by damaged cells that die via either proinflammatory necroptosis or anti-inflammatory apoptosis. Both forms of cell death may be mediated by reactive oxygen species (ROS) generated during the proinflammatory response. Recent evidence suggests that exercise training boosts antioxidative capacity and could offer protection against sepsis. Given these findings, we aimed to examine the impact of exercise training on neural cell death in the context of sepsis.
    Methods: We assessed the effectiveness of exercise in reducing ROS production and the inflammatory response using a cecal ligation and puncture (CLP)-induced sepsis model. Forty C57BL/6N male mice were randomly divided into 2 groups: control (CLP-Con; n=20) and experimental (CLP-Ex; n=20). Before the induction of sepsis by CLP, the CLP-Ex mice underwent interval training on a treadmill 3 days per week for 8 weeks. Each day involved 10 cycles of 2 minutes at 8 m/min and 2 minutes at 15 m/min. After the CLP procedure, we monitored the survival of 10 mice from each group over a 30-hour period.
    Results: The findings indicated that exercise training increased the survival rate among mice with CLP-induced sepsis by enhancing antioxidative capacity and delaying the transition from a hyperdynamic to an immunosuppressive state.
    Conclusion: Exercise training may delay the progression from the hyperdynamic state to the hypodynamic phase of sepsis by increasing antioxidant capacity and reducing apoptotic cell death.
    Sprache Englisch
    Erscheinungsdatum 2024-03-31
    Erscheinungsland Korea (South)
    Dokumenttyp Journal Article
    ZDB-ID 2584447-7
    ISSN 2093-6931 ; 2093-4777
    ISSN (online) 2093-6931
    ISSN 2093-4777
    DOI 10.5213/inj.2448044.022
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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