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  1. Article ; Online: One-Pot Synthesis of 3,4-Dihydrocoumarins via C-H Oxidation/Conjugate Addition/Cyclization Cascade Reaction.

    Kim, Dae Young

    Molecules (Basel, Switzerland)

    2023  Volume 28, Issue 19

    Abstract: The 3,4-dihydrocoumarin derivatives were obtained from 2-alkyl phenols and oxazolones via C-H oxidation and cyclization cascade in the presence of silver oxide ( ... ...

    Abstract The 3,4-dihydrocoumarin derivatives were obtained from 2-alkyl phenols and oxazolones via C-H oxidation and cyclization cascade in the presence of silver oxide (Ag
    Language English
    Publishing date 2023-09-28
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 1413402-0
    ISSN 1420-3049 ; 1431-5165 ; 1420-3049
    ISSN (online) 1420-3049
    ISSN 1431-5165 ; 1420-3049
    DOI 10.3390/molecules28196853
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    In stock of ZB MED Cologne/Königswinter

    Zs.MO 81: Show issues

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  2. Article: COVID-19 and Gun Violence: Keeping Unknown Shocks and Volatility in Perspective.

    Kim, Dae-Young

    Criminal justice review

    2022  Volume 48, Issue 2, Page(s) 145–167

    Abstract: The current study estimates the varying effects of the pandemic on gun violence by social distancing type, fatality, and location. Interrupted time series analyses are used to examine weekly crime data from 2016 to 2020 in New York City. Box-Cox power ... ...

    Abstract The current study estimates the varying effects of the pandemic on gun violence by social distancing type, fatality, and location. Interrupted time series analyses are used to examine weekly crime data from 2016 to 2020 in New York City. Box-Cox power transformation and GARCH techniques are used to address the problems of non-normality and heteroscedasticity in the models. There were significant increases in fatal and non-fatal shootings during the relaxation of social distancing. The impact of the BLM protests and depolicing is significant for non-fatal shootings. The pandemic led to greater increases in gun violence in The Bronx, Brooklyn, Manhattan, and Queens, as opposed to Staten Island. In addition, there is some evidence of increases in the volatility of gun violence during the pandemic. High volatility implies crime rates are in severe flux, which then leads to greater uncertainty and fear for public safety. This paper surfaces useful information for guiding policy and practice.
    Language English
    Publishing date 2022-03-23
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2187435-9
    ISSN 1556-3839 ; 0734-0168
    ISSN (online) 1556-3839
    ISSN 0734-0168
    DOI 10.1177/07340168221088571
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  3. Article: Effects of a music-based exercise program on the postural balance and emotions of instrumentalists.

    Kim, Min-Ji / Kim, Dae-Young

    Journal of exercise rehabilitation

    2023  Volume 19, Issue 6, Page(s) 339–344

    Abstract: This study aimed to verify the effects of a music-based exercise program on postural balance and emotional factors among instrumentalists. We recruited 11 instrumentalists aged 25-45 years who were asked to perform a music-based exercise program for 60 ... ...

    Abstract This study aimed to verify the effects of a music-based exercise program on postural balance and emotional factors among instrumentalists. We recruited 11 instrumentalists aged 25-45 years who were asked to perform a music-based exercise program for 60 min per session, three sessions weekly, for 8 weeks. The anterior balance and lateral alignment of the participants were determined using a body posture analyzer. To assess the emotional factors, the World Health Organization Quality of Life, stress response inventory, and Rosenberg self-esteem scale were used. This study did not reveal a statistically significant difference in anterior postural imbalance and lateral misalignment. In contrast, emotional factors, including quality of life, stress response, and the self-esteem subcategories, exhibited significant differences. The music-based exercise program in this study significantly improved the emotional factors. Nevertheless, a more structured and long-term program should be developed to ensure the improvement of postural imbalance among instrumentalists.
    Language English
    Publishing date 2023-12-26
    Publishing country Korea (South)
    Document type Journal Article
    ZDB-ID 2756291-8
    ISSN 2288-1778 ; 2288-176X
    ISSN (online) 2288-1778
    ISSN 2288-176X
    DOI 10.12965/jer.2346494.247
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  4. Article ; Online: Deep-learning model for predicting physical fitness in possible sarcopenia: analysis of the Korean physical fitness award from 2010 to 2023.

    Bae, Jun-Hyun / Seo, Ji-Won / Kim, Dae Young

    Frontiers in public health

    2023  Volume 11, Page(s) 1241388

    Abstract: Introduction: Physical fitness is regarded as a significant indicator of sarcopenia. This study aimed to develop and evaluate a deep-learning model for predicting the decline in physical fitness due to sarcopenia in individuals with potential sarcopenia. ...

    Abstract Introduction: Physical fitness is regarded as a significant indicator of sarcopenia. This study aimed to develop and evaluate a deep-learning model for predicting the decline in physical fitness due to sarcopenia in individuals with potential sarcopenia.
    Methods: This study used the 2010-2023 Korean National Physical Fitness Award data. The data comprised exercise- and health-related measurements in Koreans aged >65 years and included body composition and physical fitness variables. Appendicular muscle mass (ASM) was calculated as ASM/height
    Results: The deep-learning model proved effective in distinguishing from sarcopenia, with an accuracy of 87.55%, precision of 85.57%, recall of 90.34%, and F1 score of 87.89%. Waist circumference (WC, cm), absolute grip strength (kg), and body fat (BF, %) had an influence on the model output. SHAP, LIME, and permutation feature importance analyses revealed that WC and absolute grip strength were the most important variables. WC, figure-of-8 walk, BF, timed up-and-go, and sit-and-reach emerged as key factors for predicting possible sarcopenia.
    Conclusion: The deep-learning model showed high accuracy and recall with respect to possible sarcopenia prediction. Considering the need for the development of a more detailed and accurate sarcopenia prediction model, the study findings hold promise for enhancing sarcopenia prediction using deep learning.
    MeSH term(s) Humans ; Aged ; Republic of Korea ; Sarcopenia/physiopathology ; Male ; Female ; Deep Learning ; Neural Networks, Computer ; Physical Fitness
    Language English
    Publishing date 2023-08-08
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2711781-9
    ISSN 2296-2565 ; 2296-2565
    ISSN (online) 2296-2565
    ISSN 2296-2565
    DOI 10.3389/fpubh.2023.1241388
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  5. Article: Assessing of exercise intensity for a rhythmik exercise program based on cardiopulmonary functions.

    Ryu, Ha-Rin / Eum, Hee-Jung / Kim, Dae-Young

    Journal of exercise rehabilitation

    2023  Volume 19, Issue 5, Page(s) 275–279

    Abstract: This study investigated the determination of exercise intensity for a rhythmik exercise program based on cardiopulmonary functions. Nine female participants in their 20s to 40s performed a rhythmik exercise program for 60 min per session, three sessions ... ...

    Abstract This study investigated the determination of exercise intensity for a rhythmik exercise program based on cardiopulmonary functions. Nine female participants in their 20s to 40s performed a rhythmik exercise program for 60 min per session, three sessions weekly, for 8 weeks. All participants underwent a grade exercise test to measure their minute ventilation (VE), oxygen uptake (VO
    Language English
    Publishing date 2023-10-25
    Publishing country Korea (South)
    Document type Journal Article
    ZDB-ID 2756291-8
    ISSN 2288-1778 ; 2288-176X
    ISSN (online) 2288-1778
    ISSN 2288-176X
    DOI 10.12965/jer.2346392.196
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  6. Article: Effects of exercise using a mobile device on cardiopulmonary function, metabolic risk factors, and self-efficacy in obese women.

    Kim, Dae-Young

    Journal of exercise rehabilitation

    2018  Volume 14, Issue 5, Page(s) 829–834

    Abstract: The purpose of this study was to determine the effects of a 12-week walking exercise using a mobile device on cardiopulmonary function, metabolic risk factors, and self-efficacy in obese middle-aged women. For this study, 14 middle-aged subjects with ... ...

    Abstract The purpose of this study was to determine the effects of a 12-week walking exercise using a mobile device on cardiopulmonary function, metabolic risk factors, and self-efficacy in obese middle-aged women. For this study, 14 middle-aged subjects with obesity were included and performed walking exercise of 50%-60% maximum oxygen uptake intensity 3 times a week for 12 weeks. As a result, weight, % body fat, body mass index, and waist circumference significantly reduced. In addition, systolic blood pressure, diastolic blood pressure, mean arterial pressure, and hemoglobin A
    Language English
    Publishing date 2018-10-31
    Publishing country Korea (South)
    Document type Journal Article
    ZDB-ID 2756291-8
    ISSN 2288-1778 ; 2288-176X
    ISSN (online) 2288-1778
    ISSN 2288-176X
    DOI 10.12965/jer.1836454.227
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  7. Article: Current status of the diagnosis and treatment of hemophagocytic lymphohistiocytosis in adults.

    Kim, Yu Ri / Kim, Dae-Young

    Blood research

    2021  Volume 56, Issue S1, Page(s) S17–S25

    Abstract: Hemophagocytic lymphohistiocytosis (HLH) is a syndrome of defective apoptosis, a disruption of the regulatory pathway that terminates immune and inflammatory responses. Fever, cytopenia, splenomegaly, and/or hemophagocytosis are typical findings of this ... ...

    Abstract Hemophagocytic lymphohistiocytosis (HLH) is a syndrome of defective apoptosis, a disruption of the regulatory pathway that terminates immune and inflammatory responses. Fever, cytopenia, splenomegaly, and/or hemophagocytosis are typical findings of this syndrome. HLH can be induced by genetic disorders (familial) or secondary causes. Familial HLH is rare, while secondary causes in adults include infection, autoimmunity, and malignancy. HLH in adults tends to be confused with or misdiagnosed as sepsis, mainly due to similar clinical manifestations and laboratory findings, which make it difficult to diagnose HLH rapidly and adopt immunosuppressive agents and/or chemotherapy adequately. Treatment of pediatric HLH using HLH-2004 or multi-agent chemotherapy can be applied in adult patients, although the dose and type of drug need to be adjusted. It is highly recommended that allogenic hematopoietic stem cell transplantation should be used in patients who become reactivated or are refractory to the initial treatment as soon as possible to improve survival. Future clinical trials are warranted to determine more suitable treatments for adult patients with HLH.
    Language English
    Publishing date 2021-05-02
    Publishing country Korea (South)
    Document type Journal Article ; Review
    ZDB-ID 2711910-5
    ISSN 2288-0011 ; 2287-979X
    ISSN (online) 2288-0011
    ISSN 2287-979X
    DOI 10.5045/br.2021.2020323
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  8. Article: When COVID-19 and guns meet: A rise in shootings.

    Kim, Dae-Young / Phillips, Scott W

    Journal of criminal justice

    2021  Volume 73, Page(s) 101783

    Abstract: Objective: The present study examines the impact of the COVID-19 stay-at-home order on gun violence in Buffalo, New York: fatal shootings, all non-fatal shootings, non-fatal shootings with injury, and non-fatal shootings without injury. It also ... ...

    Abstract Objective: The present study examines the impact of the COVID-19 stay-at-home order on gun violence in Buffalo, New York: fatal shootings, all non-fatal shootings, non-fatal shootings with injury, and non-fatal shootings without injury. It also estimated its impact on gang and non-gang related shootings.
    Methods: Weekly crime data are analyzed at the city level using ARIMA and poisson models. Forecasting is used to verify the validity of both ARIMA and poisson models.
    Results: The effect of the pandemic was conditional upon the types of gun violence and impact models of intervention. The pandemic caused a temporary increase in fatal shootings while leading to a long-term increase in all non-fatal shootings, non-fatal shootings with injury, non-fatal shootings without injury, and gang related shootings.
    Conclusions: The pandemic has changed the volume of gun violence possibly due to increased strain and/or changed routine activities. This study not only promotes further research but also has policy implications for public health and safety. From a public policy perspective, criminal justice agencies should focus more attention and resources on gun violence resulting from a sense of strain and fear among individuals during the pandemic.
    Language English
    Publishing date 2021-01-21
    Publishing country United States
    Document type Journal Article
    ISSN 0047-2352
    ISSN 0047-2352
    DOI 10.1016/j.jcrimjus.2021.101783
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  9. Article: The investigations on organic sources and inorganic formation processes and their implications on haze during late winter in Seoul, Korea

    Kim, Dae-young / de Foy, Benjamin / Kim, Hwajin

    Environmental research. 2022 Sept., v. 212

    2022  

    Abstract: This study investigated the sources and formation processes of particulate matter (PM) with an aerodynamic diameter ≤1 μm (PM₁) and black carbon (BC) in Seoul during late winter via high-resolution time-of-flight aerosol mass spectrometry (HR-ToF-AMS) ... ...

    Abstract This study investigated the sources and formation processes of particulate matter (PM) with an aerodynamic diameter ≤1 μm (PM₁) and black carbon (BC) in Seoul during late winter via high-resolution time-of-flight aerosol mass spectrometry (HR-ToF-AMS) and positive matrix factorization (PMF) analysis. In this study, secondary aerosols (75.1%) exhibited higher contributions than did primary aerosols (24.9%), suggesting the importance of secondary aerosol formation over primary aerosol emissions for NR-PM₁+BC during late winter. Frequent haze episodes were observed and these were found to proceed in two distinct stages each with different pattern of sulfur oxidation ratio (SOR), nitrogen oxidation ratio (NOR) and meteorological conditions, such as the wind speed, direction and relative humidity (RH). Haze formation during stage 1 was caused mainly by local accumulation of primary aerosols and formation of local secondary aerosols under stagnant conditions. However, there were some impacts of down mixing of regional transport. Stage 2 took place during the night following stage 1 and was characterized by enhanced secondary aerosol formation. Enhancement of SOR might be due to accelerated aqueous phase reactions under higher RH and enhanced NOR is probably because of the heterogeneous uptake of N₂O₅ by ammonium sulfate aerosols ensued after sulfate formation. These findings suggest that the winter air quality in Seoul depends on complex processes, from not only emissions and transport from upwind areas but also from significant impacts of meteorological condition.
    Keywords aerodynamics ; aerosols ; air quality ; ammonium sulfate ; carbon ; mass spectrometry ; nitrogen ; oxidation ; particulates ; relative humidity ; research ; sulfur ; wind speed ; winter
    Language English
    Dates of publication 2022-09
    Publishing place Elsevier Inc.
    Document type Article
    ZDB-ID 205699-9
    ISSN 1096-0953 ; 0013-9351
    ISSN (online) 1096-0953
    ISSN 0013-9351
    DOI 10.1016/j.envres.2022.113174
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    In stock of ZB MED Cologne/Königswinter

    Zs.A 726: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)

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  10. Article: Differences in wind farm energy production based on the atmospheric stability dissipation rate: Case study of a 30 MW onshore wind farm

    Kim, Dae-Young / Kim, Bum-Suk

    Energy. 2022 Jan. 15, v. 239

    2022  

    Abstract: The physical characteristics of a wind field significantly influence the energy produced by a wind farm because they are related to the available kinetic energy in the wake region created by wind turbine generators; they also affect wake recovery. To ... ...

    Abstract The physical characteristics of a wind field significantly influence the energy produced by a wind farm because they are related to the available kinetic energy in the wake region created by wind turbine generators; they also affect wake recovery. To understand the correlation between the external environment and the amount of energy produced, a study based on the interaction between the power characteristics of wind turbines and atmospheric factors is required. In this study, the distribution characteristics of the turbulence dissipation rate (ε) with the regime were analyzed after classifying atmospheric stability by regimes. In addition, the normalized power of wind turbines was analyzed, and the difference in annual energy production (AEP) with the regime was presented. The AEP showed the best value in the slightly unstable regime and the lowest value in the stable regime. Finally, considering the annual mean wind speed at the study site, a difference of approximately 5%–7% was observed between the AEP under the neutral atmospheric regime and other atmospheric regimes. Further, this study highlights the impact of atmospheric stability regimes and the turbulence dissipation rate on energy production, thereby indicating the necessity of integrating these factors to predict the AEP of wind farms.
    Keywords case studies ; kinetic energy ; turbulent flow ; wind farms ; wind speed ; wind turbines
    Language English
    Dates of publication 2022-0115
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 2019804-8
    ISSN 0360-5442 ; 0360-5442
    ISSN (online) 0360-5442
    ISSN 0360-5442
    DOI 10.1016/j.energy.2021.122380
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