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  1. Book ; Online: Quantum-Secure Hybrid Blockchain System for DID-based Verifiable Random Function with NTRU Linkable Ring Signature

    Kim, Bong Gon / Wong, Dennis / Yang, Yoon Seok

    2024  

    Abstract: In this study, we present a secure smart contract-based Verifiable Random Function (VRF) model, addressing the shortcomings of existing systems. As quantum computing emerges, conventional public key cryptography faces potential vulnerabilities. To ... ...

    Abstract In this study, we present a secure smart contract-based Verifiable Random Function (VRF) model, addressing the shortcomings of existing systems. As quantum computing emerges, conventional public key cryptography faces potential vulnerabilities. To enhance our VRF's robustness, we employ post-quantum Ring-LWE encryption for generating pseudo-random sequences. Given the computational intensity of this approach and associated on-chain gas costs, we propose a hybrid architecture of VRF system where on-chain and off-chain can communicate in a scalable and secure way. To ensure the validity and integrity of the off-chain computations (e.g., Ring-LWE encryption), we employ a quantum-secure linkable ring signature scheme on NTRU lattice and also delegated key generation (DKG) with a secure key encapsulation mechanism (KEM). Our decentralized VRF employs multi-party computation (MPC) with blockchain-based decentralized identifiers (DID), ensuring the collective efforts of enhanced randomness and security. We show the security and privacy advantages of our proposed VRF model with the approximated estimation of overall temporal and spatial complexities. We also evaluate our VRF MPC model's entropy and outline its Solidity smart contract integration. This research also provides a method to produce and verify the VRF output's proof, optimal for scenarios necessitating randomness and validation. Lastly, using NIST SP800-22 test suite for randomness, we demonstrate the commendable result with a 97.73% overall pass rate on 11 standard tests and 0.5459 of average p-value for the total 176 tests.

    Comment: 25 pages, 5 figures, 2023 International Journal on Cryptography and Information Security (IJCIS). arXiv admin note: text overlap with arXiv:2311.11734
    Keywords Computer Science - Cryptography and Security ; Computer Science - Distributed ; Parallel ; and Cluster Computing
    Subject code 303
    Publishing date 2024-01-30
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article: Infantile Scabies Masquerading as Langerhans Cell Histiocytosis.

    Yang, Yoon Seok / Byun, Yun Sun / Kim, Jin Hye / Kim, Hye One / Park, Chun Wook

    Annals of dermatology

    2015  Volume 27, Issue 3, Page(s) 349–351

    Language English
    Publishing date 2015-05-29
    Publishing country Korea (South)
    Document type Journal Article
    ZDB-ID 1012662-4
    ISSN 2005-3894 ; 1013-9087
    ISSN (online) 2005-3894
    ISSN 1013-9087
    DOI 10.5021/ad.2015.27.3.349
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Hyperkeratotic Hand Eczema due to Use of Rubber Gloves While Driving.

    Yang, Yoon Seok / Byun, Yun Sun / Kim, Jin Hye / Park, Chun Wook / Kim, Hye One

    Annals of dermatology

    2014  Volume 26, Issue 6, Page(s) 769–771

    Language English
    Publishing date 2014-11-26
    Publishing country Korea (South)
    Document type Journal Article
    ZDB-ID 1012662-4
    ISSN 2005-3894 ; 1013-9087
    ISSN (online) 2005-3894
    ISSN 1013-9087
    DOI 10.5021/ad.2014.26.6.769
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Increased expression of three types of transient receptor potential channels (TRPA1, TRPV4 and TRPV3) in burn scars with post-burn pruritus.

    Yang, Yoon Seok / Cho, Soo Ick / Choi, Min Gyu / Choi, Young Hee / Kwak, In Suk / Park, Chun Wook / Kim, Hye One

    Acta dermato-venereologica

    2015  Volume 95, Issue 1, Page(s) 20–24

    Abstract: Post-burn pruritus is a common distressing consequence of burn wounds. Empirical treatment often fails to have a satisfactory outcome on post-burn pruritus, as the mechanism of post-burn pruritus has not been fully elucidated. The aim of this study was ... ...

    Abstract Post-burn pruritus is a common distressing consequence of burn wounds. Empirical treatment often fails to have a satisfactory outcome on post-burn pruritus, as the mechanism of post-burn pruritus has not been fully elucidated. The aim of this study was to evaluate the manifestation of transient receptor potential (TRP) channels in post-burn pruritus. Fifty-one burn patients with (n=33) or without (n=18) pruritus were investigated, including skin biopsies. Not unexpectedly, the scarred body area was larger in the former group. In immunohistochemistry, TPRV3 was significantly elevated in the epidermis of burn scars with pruritus. Furthermore, real time- PCR showed that mRNA of TRPA1 and TRPV4 was increased in itching burn scars. Staining for substance P and CGRP did not differ between the 2 grouped, but the former neuropeptide was increased in burn scars. These results may help determine a specific therapeutic approach for post-burn pruritus.
    MeSH term(s) Adolescent ; Adult ; Biopsy ; Burns/complications ; Calcitonin Gene-Related Peptide/analysis ; Calcium Channels/analysis ; Calcium Channels/genetics ; Child ; Cicatrix/diagnosis ; Cicatrix/etiology ; Cicatrix/genetics ; Cicatrix/metabolism ; Epidermis/chemistry ; Epidermis/pathology ; Female ; Humans ; Immunohistochemistry ; Male ; Middle Aged ; Nerve Tissue Proteins/analysis ; Nerve Tissue Proteins/genetics ; Pruritus/diagnosis ; Pruritus/etiology ; Pruritus/genetics ; Pruritus/metabolism ; RNA, Messenger/analysis ; Real-Time Polymerase Chain Reaction ; Substance P/analysis ; TRPA1 Cation Channel ; TRPV Cation Channels/analysis ; TRPV Cation Channels/genetics ; Transient Receptor Potential Channels/analysis ; Transient Receptor Potential Channels/genetics ; Young Adult
    Chemical Substances Calcium Channels ; Nerve Tissue Proteins ; RNA, Messenger ; TRPA1 Cation Channel ; TRPA1 protein, human ; TRPV Cation Channels ; TRPV3 protein, human ; TRPV4 protein, human ; Transient Receptor Potential Channels ; Substance P (33507-63-0) ; Calcitonin Gene-Related Peptide (83652-28-2)
    Language English
    Publishing date 2015-01
    Publishing country Sweden
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 80007-7
    ISSN 1651-2057 ; 0001-5555
    ISSN (online) 1651-2057
    ISSN 0001-5555
    DOI 10.2340/00015555-1858
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Dietary pattern and nutrient intake of korean children with atopic dermatitis.

    Cui, Hui Song / Ahn, In Su / Byun, Yun Sun / Yang, Yoon Seok / Kim, Jin Hye / Chung, Bo Young / Kim, Hye One / Park, Chun Wook

    Annals of dermatology

    2014  Volume 26, Issue 5, Page(s) 570–575

    Abstract: Background: Atopic dermatitis (AD) is characterized by itching and eczema-like skin lesions, and its symptoms alleviate with age. Recently, the prevalence of AD has increased among adolescents and adults. The increasing prevalence of AD seems to be ... ...

    Abstract Background: Atopic dermatitis (AD) is characterized by itching and eczema-like skin lesions, and its symptoms alleviate with age. Recently, the prevalence of AD has increased among adolescents and adults. The increasing prevalence of AD seems to be related to westernized lifestyles and dietary patterns.
    Objective: The aim of this study was to evaluate the dietary patterns and nutrient intake of patients with AD.
    Methods: The study population consisted of 50 children with AD who visited the Department of Dermatology at Kangnam Sacred Heart Hospital, Seoul, Korea from May 2008 to May 2009. Physical condition and calorie intake were evaluated using the Eczema Area and Severity Index score and Food Record Questionnaire completed by the subjects, and the data were analyzed using the Nutritional Assessment Program Can-pro 3.0 (The Korean Nutrition Society, 2005) program to determine the gap between the actual ingestion and average requirements of 3 major nutrients (i.e. carbohydrates, proteins, and lipids), vitamins (i.e. A, B, C, and E), niacin, folic acid, calcium, iron, phosphorus, and zinc in all subjects.
    Results: The intake rate of proteins was 18.02% (recommended dietary allowance [RDA], 7%~20%), of carbohydrates was 67.7% (RDA, 55%~70%), and of lipids was 14.24% (RDA, 15%~30%). Thirty-one subjects (62%) showed deficiency of folic acid, and 21 subjects (42%), of iron supplements.
    Conclusion: Essential nutrient intake tends to be lower in AD patients than in healthy subjects, and this low intake is closely related to the severity of AD.
    Language English
    Publishing date 2014-09-26
    Publishing country Korea (South)
    Document type Journal Article
    ZDB-ID 1012662-4
    ISSN 2005-3894 ; 1013-9087
    ISSN (online) 2005-3894
    ISSN 1013-9087
    DOI 10.5021/ad.2014.26.5.570
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Clinical and Histopathological Features of Post Burn Pruritus.

    Kwak, In Suk / Park, Sook Young / Choi, Young Hee / Cho, Soo Ick / Yang, Yoon Seok / Cho, Yong Se / Choi, Min Gyu / Seo, Cheong Hoon / Park, Chun Wook / Kim, Hye One

    Journal of burn care & research : official publication of the American Burn Association

    2016  Volume 37, Issue 6, Page(s) 343–349

    Abstract: The aim of the study was to evaluate the clinical and histopathological characteristics of patients with post burn pruritus. The authors took skin samples from 62 burn patients with or without pruritus. The measured skin condition includes thickness and ... ...

    Abstract The aim of the study was to evaluate the clinical and histopathological characteristics of patients with post burn pruritus. The authors took skin samples from 62 burn patients with or without pruritus. The measured skin condition includes thickness and paresthesia. Various clinical features were rated on patient assessment scale (PSAS) and observer scar assessment scale. The samples were stained with hematoxylin & eosin, Masson's trichrome, Verhoeff's elastic, and toluidine blue stain. The stained samples were analyzed in terms of epidermal thickness, mononuclear cell infiltration, collagen bundles, elastic fibers, and mast cell distribution. A total of 62 patients were divided into group A (43 patients with pruritus) and group B (19 patients without). The mean (±SD) intensity of itch in group A patients was 4.58 (±3.24). Group A patients had thickened epidermises and higher scores on the PSAS and observer scar assessment scale, especially on the PSAS score. Sensations, including stinging and electric shock sensations, were more frequent in group A than in group B. Histological analysis revealed that group A patients had thinner collagen bundles and more increased mast cell counts, while others did not. Patients suffering from post burn pruritus had distinctive clinical and histopathological features, such as prominent mast cell deposition and thin collagen bundles, compared with group B patients. These results may help better understand post burn pruritus.
    MeSH term(s) Adolescent ; Adult ; Burns/complications ; Burns/pathology ; Child ; Cicatrix ; Collagen/analysis ; Female ; Humans ; Male ; Mast Cells/cytology ; Middle Aged ; Pruritus/etiology ; Pruritus/pathology ; Young Adult
    Chemical Substances Collagen (9007-34-5)
    Language English
    Publishing date 2016-12-09
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2224246-6
    ISSN 1559-0488 ; 1559-047X
    ISSN (online) 1559-0488
    ISSN 1559-047X
    DOI 10.1097/BCR.0000000000000392
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Clinical and Histopathological Features of Post Burn Pruritus.

    Kwak, In Suk / Young Park, Sook / Choi, Young Hee / Cho, Soo Ick / Yang, Yoon Seok / Cho, Yong Se / Choi, Min Gyu / Hoon Seo, Cheong / Wook Park, Chun / One Kim, Hye

    Journal of burn care & research : official publication of the American Burn Association

    2016  Volume 37, Issue 6, Page(s) 343–349

    Abstract: The aim of the study was to evaluate the clinical and histopathological characteristics of patients with post burn pruritus. The authors took skin samples from 62 burn patients with or without pruritus. The measured skin condition includes thickness and ... ...

    Abstract The aim of the study was to evaluate the clinical and histopathological characteristics of patients with post burn pruritus. The authors took skin samples from 62 burn patients with or without pruritus. The measured skin condition includes thickness and paresthesia. Various clinical features were rated on patient assessment scale (PSAS) and observer scar assessment scale. The samples were stained with hematoxylin & eosin, Masson's trichrome, Verhoeff's elastic, and toluidine blue stain. The stained samples were analyzed in terms of epidermal thickness, mononuclear cell infiltration, collagen bundles, elastic fibers, and mast cell distribution. A total of 62 patients were divided into group A (43 patients with pruritus) and group B (19 patients without). The mean (±SD) intensity of itch in group A patients was 4.58 (±3.24). Group A patients had thickened epidermises and higher scores on the PSAS and observer scar assessment scale, especially on the PSAS score. Sensations, including stinging and electric shock sensations, were more frequent in group A than in group B. Histological analysis revealed that group A patients had thinner collagen bundles and more increased mast cell counts, while others did not. Patients suffering from post burn pruritus had distinctive clinical and histopathological features, such as prominent mast cell deposition and thin collagen bundles, compared with group B patients. These results may help better understand post burn pruritus.
    Language English
    Publishing date 2016-11
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2224246-6
    ISSN 1559-0488 ; 1559-047X
    ISSN (online) 1559-0488
    ISSN 1559-047X
    DOI 10.1097/BCR.0000000000000392
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Maintenance Therapy of Facial Seborrheic Dermatitis with 0.1% Tacrolimus Ointment.

    Kim, Hye One / Yang, Yoon Seok / Ko, Hyun Chang / Kim, Gyung Moon / Cho, Sang Hyun / Seo, Young Joon / Son, Sang Wook / Lee, Jong Rok / Lee, Joong Sun / Chang, Sung Eun / Che, Jae We / Park, Chun Wook

    Annals of dermatology

    2015  Volume 27, Issue 5, Page(s) 523–530

    Abstract: Background: Topical calcineurin inhibitors (TCIs) have been successfully used to treat seborrheic dermatitis (SD) patients. Meanwhile, treatment of atopic dermatitis (AD) with low-dose, intermittent TCI has been proved to reduce disease flare-ups. This ... ...

    Abstract Background: Topical calcineurin inhibitors (TCIs) have been successfully used to treat seborrheic dermatitis (SD) patients. Meanwhile, treatment of atopic dermatitis (AD) with low-dose, intermittent TCI has been proved to reduce disease flare-ups. This regimen is known as a maintenance treatment.
    Objective: The aim of this trial was to investigate the efficacy and tolerability of a maintenance treatment with tacrolimus ointment in patients with facial SD.
    Methods: During the initial stabilization period, patients with facial SD or AD applied 0.1% tacrolimus ointment twice daily for up to 4 weeks. Clinical measurements were evaluated on either in the whole face or on separate facial regions. When an investigator global assessment score 1 was achieved, the patient applied tacrolimus twice weekly for 20 weeks. We also compared our results with recent published data of placebo controlled study to allow an estimation of the placebo effect.
    Results: The time to the first relapse during phase II was similar in both groups otherwise significantly longer than the placebo group. The recurrence-free curves of two groups were not significantly different from each other; otherwise the curve of the placebo group was significantly different. There were no significant differences between the 2 groups in the number of DEs, and treatment days for disease exacerbations (DEs). The adverse event profile was also similar between the 2 groups. During the 20 weeks of treatment, the study population tolerated tacrolimus ointment well.
    Conclusion: The results of this study suggest that maintenance treatment with tacrolimus may be effective in preventing the occurrence of facial SD exacerbations.
    Language English
    Publishing date 2015-10-02
    Publishing country Korea (South)
    Document type Journal Article
    ZDB-ID 1012662-4
    ISSN 2005-3894 ; 1013-9087
    ISSN (online) 2005-3894
    ISSN 1013-9087
    DOI 10.5021/ad.2015.27.5.523
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: The Atopic Dermatitis Antecubital Severity score: validity, reliability, and sensitivity to change in patients with atopic dermatitis.

    Baek, Ji Hwoon / Park, Chun Wook / Choi, Kyung Min / Yang, Yoon Seok / Lee, Soo Yun / Koh, Jae Sook / Chung, Bo Young / Kim, Hye One / Park, Gyeong-Hun

    International journal of dermatology

    2015  Volume 54, Issue 12, Page(s) 1382–1389

    Abstract: Background: The Atopic Dermatitis Antecubital Severity (ADAS) score is a new objective scale for the assessment of the severity of atopic dermatitis (AD). It is calculated by multiplying the intensity of inflammatory signs by the size of an antecubital ... ...

    Abstract Background: The Atopic Dermatitis Antecubital Severity (ADAS) score is a new objective scale for the assessment of the severity of atopic dermatitis (AD). It is calculated by multiplying the intensity of inflammatory signs by the size of an antecubital eczema lesion.
    Aim: To test the validity, reliability, and sensitivity to changes of the ADAS score compared with those of the Eczema Area and Severity Index (EASI) score.
    Methods: Forty patients with AD were enrolled and treated with a moisturizer. At baseline, and in weeks 1 and 2, two independent evaluators measured the ADAS score, the EASI score, and the investigator's global assessment score rated on a six-point scale.
    Results: The ADAS score showed a higher validity than the EASI score. The superiority of the ADAS to the EASI was prominent in mild AD. Inter-evaluator reliability was excellent in both the ADAS score and the EASI. The sensitivity to changes was higher in the ADAS score than in the EASI score.
    Conclusions: The ADAS score may be used as a simple scoring system with good validity, reliability, and sensitivity to changes, especially in patients with mild-to-moderate AD.
    MeSH term(s) Adolescent ; Adult ; Child ; Child, Preschool ; Dermatitis, Atopic/drug therapy ; Dermatitis, Atopic/pathology ; Female ; Forearm ; Humans ; Male ; Observer Variation ; Reproducibility of Results ; Severity of Illness Index ; Skin Cream/therapeutic use ; Young Adult
    Language English
    Publishing date 2015-12
    Publishing country England
    Document type Comparative Study ; Journal Article ; Research Support, Non-U.S. Gov't ; Validation Studies
    ZDB-ID 412254-9
    ISSN 1365-4632 ; 0011-9059 ; 1461-1244
    ISSN (online) 1365-4632
    ISSN 0011-9059 ; 1461-1244
    DOI 10.1111/ijd.12711
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Computer-aided diagnosis of solid breast nodules: use of an artificial neural network based on multiple sonographic features.

    Joo, Segyeong / Yang, Yoon Seok / Moon, Woo Kyung / Kim, Hee Chan

    IEEE transactions on medical imaging

    2004  Volume 23, Issue 10, Page(s) 1292–1300

    Abstract: A computer-aided diagnosis (CAD) algorithm identifying breast nodule malignancy using multiple ultrasonography (US) features and artificial neural network (ANN) classifier was developed from a database of 584 histologically confirmed cases containing 300 ...

    Abstract A computer-aided diagnosis (CAD) algorithm identifying breast nodule malignancy using multiple ultrasonography (US) features and artificial neural network (ANN) classifier was developed from a database of 584 histologically confirmed cases containing 300 benign and 284 malignant breast nodules. The features determining whether a breast nodule is benign or malignant were extracted from US images through digital image processing with a relatively simple segmentation algorithm applied to the manually preselected region of interest. An ANN then distinguished malignant nodules in US images based on five morphological features representing the shape, edge characteristics, and darkness of a nodule. The structure of ANN was selected using k-fold cross-validation method with k = 10. The ANN trained with randomly selected half of breast nodule images showed the normalized area under the receiver operating characteristic curve of 0.95. With the trained ANN, 53.3% of biopsies on benign nodules can be avoided with 99.3% sensitivity. Performance of the developed classifier was reexamined with new US mass images in the generalized patient population of total 266 (167 benign and 99 malignant) cases. The developed CAD algorithm has the potential to increase the specificity of US for characterization of breast lesions.
    MeSH term(s) Adolescent ; Adult ; Aged ; Aged, 80 and over ; Algorithms ; Artificial Intelligence ; Breast Neoplasms/diagnostic imaging ; Cluster Analysis ; Computer Graphics ; Decision Support Systems, Clinical ; Female ; Humans ; Image Enhancement/methods ; Image Interpretation, Computer-Assisted/methods ; Information Storage and Retrieval/methods ; Neural Networks (Computer) ; Numerical Analysis, Computer-Assisted ; Pattern Recognition, Automated/methods ; Reproducibility of Results ; Sensitivity and Specificity ; Signal Processing, Computer-Assisted ; Subtraction Technique ; Ultrasonography, Mammary/methods ; User-Computer Interface
    Language English
    Publishing date 2004-10
    Publishing country United States
    Document type Comparative Study ; Journal Article ; Research Support, Non-U.S. Gov't ; Validation Studies
    ZDB-ID 622531-7
    ISSN 1558-254X ; 0278-0062
    ISSN (online) 1558-254X
    ISSN 0278-0062
    DOI 10.1109/TMI.2004.834617
    Database MEDical Literature Analysis and Retrieval System OnLINE

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