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  1. Artikel ; Online: Non-interleaved chiral metasurfaces and neural networks enhance the spatial resolution of polarimetry.

    Jang, Jaewon / Park, Minsu / Park, Yeonsang

    Light, science & applications

    2024  Band 13, Heft 1, Seite(n) 53

    Abstract: Non-interleaved chiral metasurfaces for high-spatial-resolution polarimetry are proposed and demonstrated. Furthermore, a convolutional neural network is incorporated to analyze interferometric images with the polarization state of light, and it results ... ...

    Abstract Non-interleaved chiral metasurfaces for high-spatial-resolution polarimetry are proposed and demonstrated. Furthermore, a convolutional neural network is incorporated to analyze interferometric images with the polarization state of light, and it results in accurate Stokes parameters.
    Sprache Englisch
    Erscheinungsdatum 2024-02-20
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 2662628-7
    ISSN 2047-7538 ; 2047-7538
    ISSN (online) 2047-7538
    ISSN 2047-7538
    DOI 10.1038/s41377-024-01397-2
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  2. Artikel: Comparison of participant and non-participant perceptions on healthy restaurant for sodium reduction: a qualitative study.

    Pyo, Jeehee / Lee, Mina / Jang, Yunjeong / Ock, Minsu

    Nutrition research and practice

    2023  Band 17, Heft 3, Seite(n) 503–515

    Abstract: Background/objectives: In the Republic of Korea, "Healthy Restaurant for Sodium Reduction (HRSR)" project have been designated as one of the representative policies for sodium intake reduction. However, as of 2021, only 879 restaurants, less than 0.1% ... ...

    Abstract Background/objectives: In the Republic of Korea, "Healthy Restaurant for Sodium Reduction (HRSR)" project have been designated as one of the representative policies for sodium intake reduction. However, as of 2021, only 879 restaurants, less than 0.1% of all restaurants, had been designated. Therefore, to increase the participation of restaurants in this policy, it is necessary to examine the in-depth perception and experience of participants and non-participants in the HRSR.
    Materials/methods: Two focus group discussions were conducted for HRSR project participants and non-participants.
    Results: A total of 260 semantic units were derived from the 2 groups. The units were further classified into 5 upper categories and 11 subcategories. All the study participants knew the importance of low sodium intake, but they had little information on HRSR project. Various attempts have been made to encourage low sodium practice in restaurants, and the participants reported that the amount of salt used in their restaurants currently is reduced compared to that used in the past. However, they were worried about customers' complaints about the low sodium in their diet and the insignificant beneficent associated with the policy, which makes restaurant owners reluctant to participate in this policy. All the participants agreed on the urgent need for the improvement of public awareness of low-sodium diets and for substantive government support for HRSR.
    Conclusion: This study concluded that strategies such as more active publicity for the practice of sodium reduction in restaurants, identification of approaches to dispel the perception that low-salt diet is not tasty, and development of plans to increase the sale of food in of HRSR, are needed.
    Sprache Englisch
    Erscheinungsdatum 2023-02-20
    Erscheinungsland Korea (South)
    Dokumenttyp Journal Article
    ZDB-ID 2387946-4
    ISSN 2005-6168 ; 1976-1457
    ISSN (online) 2005-6168
    ISSN 1976-1457
    DOI 10.4162/nrp.2023.17.3.503
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    Verfügbar in ZB MED Bonn

    Z 7762: Hefte anzeigen

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  3. Artikel ; Online: Importance of Quality of Medical Record: Differences in Patient Safety Incident Inquiry Results According to Assessment for Quality of Medical Record.

    Jeong, Hyeran / Choi, Eun Young / Lee, Won / Jang, Seung Gyeong / Pyo, Jeehee / Ock, Minsu

    Journal of patient safety

    2024  

    Abstract: Background: Medical record review is the gold standard method of identifying adverse events. However, the quality of medical records is a critical factor that can affect the accuracy of adverse event detection. Few studies have examined the impact of ... ...

    Abstract Background: Medical record review is the gold standard method of identifying adverse events. However, the quality of medical records is a critical factor that can affect the accuracy of adverse event detection. Few studies have examined the impact of medical record quality on the identification of adverse events.
    Objectives: In this study, we analyze whether there were differences in screening criteria and characteristics of adverse events according to the quality of medical records evaluated in the patient safety incident inquiry in Korea.
    Methods: Patient safety incident inquiry was conducted in 2019 on 7500 patients in Korea to evaluate their screening criteria, adverse events, and preventability. Furthermore, medical records quality judged by reviewers was evaluated on a 4-point scale. The χ2 test was used to examine differences in patient safety incident inquiry results according to medical record quality.
    Results: Cases with inadequate medical records had higher rates of identified screening criteria than those with adequate records (88.8% versus 55.7%). Medical records judged inadequate had a higher rate of confirmed adverse events than those judged adequate. "Drugs, fluids, and blood-related events," "diagnosis-related events," and "patient care-related events" were more frequently identified in cases with inadequate medical records. There was no statistically significant difference in the preventability of adverse events according to the medical record quality.
    Conclusions: Lower medical record quality was associated with higher rates of identified screening criteria and confirmed adverse events. Patient safety incident inquiry should specify medical record quality evaluation questions more accurately to more clearly estimate the impact of medical record quality.
    Sprache Englisch
    Erscheinungsdatum 2024-02-19
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 2394324-5
    ISSN 1549-8425 ; 1549-8417
    ISSN (online) 1549-8425
    ISSN 1549-8417
    DOI 10.1097/PTS.0000000000001212
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    Verfügbar in ZB MED Köln/Königswinter

    Zs.A 6583: Hefte anzeigen Standort:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular
    ab Jg. 2022: Lesesaal (EG)

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  4. Artikel ; Online: Amino-functionalized nanocellulose aerogels for the superior adsorption of CO

    Zhu, Wenkai / Chen, Meiling / Jang, Jieun / Han, Minsu / Moon, Yeonggyun / Kim, Junghwan / You, Jungmok / Li, Song / Park, Teahoon / Kim, Jeonghun

    Carbohydrate polymers

    2023  Band 323, Seite(n) 121393

    Abstract: Nanocellulose-based aerogels have been considered as one of the ideal candidates for ... ...

    Abstract Nanocellulose-based aerogels have been considered as one of the ideal candidates for CO
    Sprache Englisch
    Erscheinungsdatum 2023-09-16
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 1501516-6
    ISSN 1879-1344 ; 0144-8617
    ISSN (online) 1879-1344
    ISSN 0144-8617
    DOI 10.1016/j.carbpol.2023.121393
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  5. Artikel ; Online: Printable Light-Emitting Metasurfaces with Enhanced Directional Photoluminescence.

    Jeong, Minsu / Ko, Byoungsu / Jung, Chunghwan / Kim, Jaekyung / Jang, Jaehyuck / Mun, Jungho / Lee, Jihae / Yun, Suhyeon / Kim, Sejeong / Rho, Junsuk

    Nano letters

    2024  Band 24, Heft 19, Seite(n) 5783–5790

    Abstract: Nanoimprint lithography is gaining popularity as a cost-efficient way to reproduce nanostructures in large quantities. Recent advances in nanoimprinting lithography using high-index nanoparticles have demonstrated replication of photonic devices, but it ... ...

    Abstract Nanoimprint lithography is gaining popularity as a cost-efficient way to reproduce nanostructures in large quantities. Recent advances in nanoimprinting lithography using high-index nanoparticles have demonstrated replication of photonic devices, but it is difficult to confer special properties on nanostructures beyond general metasurfaces. Here, we introduce a novel method for fabricating light-emitting metasurfaces using nanoimprinting lithography. By utilizing quantum dots embedded in resin, we successfully imprint dielectric metasurfaces that function simultaneously as both emitters and resonators. This approach to incorporating quantum dots into metasurfaces demonstrates an improvement in photoluminescence characteristics compared to the situation where quantum dots and metasurfaces are independently incorporated. Design of the metasurface is specifically tailored to support photonic modes within the emission band of quantum dots with a large enhancement of photoluminescence. This study indicates that nanoimprinting lithography has the capability to construct nanostructures using functionalized nanoparticles and could be used in various fields of nanophotonic applications.
    Sprache Englisch
    Erscheinungsdatum 2024-05-02
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ISSN 1530-6992
    ISSN (online) 1530-6992
    DOI 10.1021/acs.nanolett.4c00871
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  6. Buch ; Online: Learning Energy Decompositions for Partial Inference of GFlowNets

    Jang, Hyosoon / Kim, Minsu / Ahn, Sungsoo

    2023  

    Abstract: This paper studies generative flow networks (GFlowNets) to sample objects from the Boltzmann energy distribution via a sequence of actions. In particular, we focus on improving GFlowNet with partial inference: training flow functions with the evaluation ... ...

    Abstract This paper studies generative flow networks (GFlowNets) to sample objects from the Boltzmann energy distribution via a sequence of actions. In particular, we focus on improving GFlowNet with partial inference: training flow functions with the evaluation of the intermediate states or transitions. To this end, the recently developed forward-looking GFlowNet reparameterizes the flow functions based on evaluating the energy of intermediate states. However, such an evaluation of intermediate energies may (i) be too expensive or impossible to evaluate and (ii) even provide misleading training signals under large energy fluctuations along the sequence of actions. To resolve this issue, we propose learning energy decompositions for GFlowNets (LED-GFN). Our main idea is to (i) decompose the energy of an object into learnable potential functions defined on state transitions and (ii) reparameterize the flow functions using the potential functions. In particular, to produce informative local credits, we propose to regularize the potential to change smoothly over the sequence of actions. It is also noteworthy that training GFlowNet with our learned potential can preserve the optimal policy. We empirically verify the superiority of LED-GFN in five problems including the generation of unstructured and maximum independent sets, molecular graphs, and RNA sequences.
    Schlagwörter Computer Science - Machine Learning
    Thema/Rubrik (Code) 541
    Erscheinungsdatum 2023-10-05
    Erscheinungsland us
    Dokumenttyp Buch ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  7. Buch ; Online: Uncertainty-Aware Shared Autonomy System with Hierarchical Conservative Skill Inference

    Kim, Taewoo / Kim, Donghyung / Jang, Minsu / Kim, Jaehong

    2023  

    Abstract: Shared autonomy imitation learning, in which robots share workspace with humans for learning, enables correct actions in unvisited states and the effective resolution of compounding errors through expert's corrections. However, it demands continuous ... ...

    Abstract Shared autonomy imitation learning, in which robots share workspace with humans for learning, enables correct actions in unvisited states and the effective resolution of compounding errors through expert's corrections. However, it demands continuous human attention and supervision to lead the demonstrations, without considering the risks associated with human judgment errors and delayed interventions. This can potentially lead to high levels of fatigue for the demonstrator and the additional errors. In this work, we propose an uncertainty-aware shared autonomy system that enables the robot to infer conservative task skills considering environmental uncertainties and learning from expert demonstrations and corrections. To enhance generalization and scalability, we introduce a hierarchical structure-based skill uncertainty inference framework operating at more abstract levels. We apply this to robot motion to promote a more stable interaction. Although shared autonomy systems have demonstrated high-level results in recent research and play a critical role, specific system design details have remained elusive. This paper provides a detailed design proposal for a shared autonomy system considering various robot configurations. Furthermore, we experimentally demonstrate the system's capability to learn operational skills, even in dynamic environments with interference, through pouring and pick-and-place tasks. Our code will be released soon.

    Comment: Submitted to ICRA 2024 and currently under review
    Schlagwörter Computer Science - Robotics
    Thema/Rubrik (Code) 629
    Erscheinungsdatum 2023-12-04
    Erscheinungsland us
    Dokumenttyp Buch ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  8. Artikel: Nurses' adaptations to changes on a COVID-19 ward in South Korea: A qualitative study.

    Lee, Won / Pyo, Jeehee / Ock, Minsu / Jang, Seung Gyeong / Choi, Eun Young

    Heliyon

    2023  Band 9, Heft 3, Seite(n) e13926

    Abstract: Background: Elucidating nurses' adaptation to changes in the early stage of an infectious disease epidemic is necessary to promote nurses' coping with and adapting to situations in which new infectious diseases are predicted periodically.: Aim: To ... ...

    Abstract Background: Elucidating nurses' adaptation to changes in the early stage of an infectious disease epidemic is necessary to promote nurses' coping with and adapting to situations in which new infectious diseases are predicted periodically.
    Aim: To explore nurses' adaptation to changes in COVID-19 wards in South Korea.
    Methods: In-depth interviews were conducted with 20 nurses through purposive sampling from May to August 2020. The collected data were transcribed verbatim, and analysis was performed using conventional content analysis.
    Findings: Three categories emerged from the interviews: (a) Disruption caused by an unforeseen pandemic outbreak, (b) perseverance through the turmoil of changes as a nurse, and (c) transition from feelings of fearfulness to those of accomplishment. While the nurses initially struggled to care for patients with COVID-19, they made conscious efforts to provide emotional nursing and maintain their professionalism.
    Discussion: Nurses caring for patients with COVID-19 have faced a number of challenges but have adapted to new scenarios by endeavoring to fulfil their professional roles.
    Conclusion: To overcome a national disaster situation such as COVID-19, the government and healthcare organizations should prepare strategies to support the efforts of nurses to strengthen their own professionalism.
    Sprache Englisch
    Erscheinungsdatum 2023-02-21
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 2835763-2
    ISSN 2405-8440
    ISSN 2405-8440
    DOI 10.1016/j.heliyon.2023.e13926
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  9. Artikel ; Online: Nurses’ adaptations to changes on a COVID-19 ward in South Korea

    Won Lee / Jeehee Pyo / Minsu Ock / Seung Gyeong Jang / Eun Young Choi

    Heliyon, Vol 9, Iss 3, Pp e13926- (2023)

    A qualitative study

    2023  

    Abstract: Background: Elucidating nurses’ adaptation to changes in the early stage of an infectious disease epidemic is necessary to promote nurses' coping with and adapting to situations in which new infectious diseases are predicted periodically. Aim: To explore ...

    Abstract Background: Elucidating nurses’ adaptation to changes in the early stage of an infectious disease epidemic is necessary to promote nurses' coping with and adapting to situations in which new infectious diseases are predicted periodically. Aim: To explore nurses’ adaptation to changes in COVID-19 wards in South Korea. Methods: In-depth interviews were conducted with 20 nurses through purposive sampling from May to August 2020. The collected data were transcribed verbatim, and analysis was performed using conventional content analysis. Findings: Three categories emerged from the interviews: (a) Disruption caused by an unforeseen pandemic outbreak, (b) perseverance through the turmoil of changes as a nurse, and (c) transition from feelings of fearfulness to those of accomplishment. While the nurses initially struggled to care for patients with COVID-19, they made conscious efforts to provide emotional nursing and maintain their professionalism. Discussion: Nurses caring for patients with COVID-19 have faced a number of challenges but have adapted to new scenarios by endeavoring to fulfil their professional roles. Conclusion: To overcome a national disaster situation such as COVID-19, the government and healthcare organizations should prepare strategies to support the efforts of nurses to strengthen their own professionalism.
    Schlagwörter COVID-19 ; Nursing ; Experience ; South Korea ; Qualitative research ; Science (General) ; Q1-390 ; Social sciences (General) ; H1-99
    Thema/Rubrik (Code) 360
    Sprache Englisch
    Erscheinungsdatum 2023-03-01T00:00:00Z
    Verlag Elsevier
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  10. Artikel ; Online: Qualitative Research in Healthcare

    Jeehee Pyo / Won Lee / Eun Young Choi / Seung Gyeong Jang / Minsu Ock

    Journal of Preventive Medicine and Public Health, Vol 56, Iss 1, Pp 12-

    Necessity and Characteristics

    2023  Band 20

    Abstract: Quantitative and qualitative research explore various social phenomena using different methods. However, there has been a tendency to treat quantitative studies using complicated statistical techniques as more scientific and superior, whereas relatively ... ...

    Abstract Quantitative and qualitative research explore various social phenomena using different methods. However, there has been a tendency to treat quantitative studies using complicated statistical techniques as more scientific and superior, whereas relatively few qualitative studies have been conducted in the medical and healthcare fields. This review aimed to provide a proper understanding of qualitative research. This review examined the characteristics of quantitative and qualitative research to help researchers select the appropriate qualitative research methodology. Qualitative research is applicable in following cases: (1) when an exploratory approach is required on a topic that is not well known, (2) when something cannot be explained fully with quantitative research, (3) when it is necessary to newly present a specific view on a research topic that is difficult to explain with existing views, (4) when it is inappropriate to present the rationale or theoretical proposition for designing hypotheses, as in quantitative research, and (5) when conducting research that requires detailed descriptive writing with literary expressions. Qualitative research is conducted in the following order: (1) selection of a research topic and question, (2) selection of a theoretical framework and methods, (3) literature analysis, (4) selection of the research participants and data collection methods, (5) data analysis and description of findings, and (6) research validation. This review can contribute to the more active use of qualitative research in healthcare, and the findings are expected to instill a proper understanding of qualitative research in researchers who review qualitative research reports and papers.
    Schlagwörter qualitative research ; focus groups ; interview ; Medicine ; R ; Public aspects of medicine ; RA1-1270
    Thema/Rubrik (Code) 001
    Sprache Englisch
    Erscheinungsdatum 2023-01-01T00:00:00Z
    Verlag Korean Society for Preventive Medicine
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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