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  1. Book ; Online: Security and Privacy for Modern Wireless Communication Systems

    Huang, Tao / Yan, Shihao / Zhang, Guanglin / Sun, Li / Yuen, Tsz Hon / Park, YoHan / Lee, Changhoon

    2023  

    Keywords Information technology industries ; Computer science ; propagation trends ; social networks ; group features ; dilated CNN ; machine learning ; physical layer security ; Rice channels ; wireless communications ; 6G security ; sycon ; cube attack ; state recovery ; wireless body area networks ; authentication ; biometric ; physical unclonable function ; BAN logic ; RoR model ; AVISPA ; 6G wireless communications ; chi-square ; cybersecurity ; intrusion detection system ; machine learning techniques ; meta-model ; stacking ensemble learning ; voting techniques ; fault attack ; error detection ; code abiding ; overcost ; bitslice cipher ; multiple eavesdroppers ; full-duplex ; underground mine ; amplify-and-forward relay ; communication system security ; physical layer ; wireless communication ; precoding ; wire-tap channel ; blockchain ; wireless communication network ; malicious node ; security protocol ; intrusion detection ; in-vehicle communication ; inter-vehicle communication ; optical communication ; security wireless ; visible light communication ; wireless optical communication ; convolutional neural network ; CNN ; counterfeit detection ; device fingerprinting ; distinct native attribute (DNA) ; information and communications technology ; multiple discriminant analysis ; MDA ; WirelessHART ; wireless communications security ; digital twin ; Internet of Things ; healthcare ; encryption ; privacy ; rural ; LPWAN ; secure localization ; positioning ; distance vector hop ; DV-Hop ; security attacks ; wireless sensor network ; security ; steganalysis ; covert channel ; steganography ; undetectability ; aggregator-based grouping ; wireless sensor networks ; encryption and decryption operations
    Language English
    Size 1 electronic resource (308 pages)
    Publisher MDPI - Multidisciplinary Digital Publishing Institute
    Publishing place Basel
    Document type Book ; Online
    Note English
    HBZ-ID HT030382140
    ISBN 9783036582290 ; 3036582290
    Database ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

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  2. Article ; Online: Provably Secure Lightweight Mutual Authentication and Key Agreement Scheme for Cloud-Based IoT Environments.

    Ju, Sieun / Park, Yohan

    Sensors (Basel, Switzerland)

    2023  Volume 23, Issue 24

    Abstract: A paradigm that combines cloud computing and the Internet of Things (IoT) allows for more impressive services to be provided to users while addressing storage and computational resource issues in the IoT environments. This cloud-based IoT environment has ...

    Abstract A paradigm that combines cloud computing and the Internet of Things (IoT) allows for more impressive services to be provided to users while addressing storage and computational resource issues in the IoT environments. This cloud-based IoT environment has been used in various industries, including public services, for quite some time, and has been researched in academia. However, various security issues can arise during the communication between IoT devices and cloud servers, because communication between devices occurs in open channels. Moreover, issues such as theft of a user's IoT device or extraction of key parameters from the user's device in a remote location can arise. Researchers interested in these issues have proposed lightweight mutual authentication key agreement protocols that are safe and suitable for IoT environments. Recently, a lightweight authentication scheme between IoT devices and cloud servers has been presented. However, we found out their scheme had various security vulnerabilities, vulnerable to insider, impersonation, verification table leakage, and privileged insider attacks, and did not provide users with untraceability. To address these flaws, we propose a provably secure lightweight authentication scheme. The proposed scheme uses the user's biometric information and the cloud server's secret key to prevent the exposure of key parameters. Additionally, it ensures low computational costs for providing users with real-time and fast services using only exclusive OR operations and hash functions in the IoT environments. To analyze the safety of the proposed scheme, we use informal security analysis, Burrows-Abadi-Needham (BAN) logic and a Real-or-Random (RoR) model. The analysis results confirm that our scheme is secure against insider attacks, impersonation attacks, stolen verifier attacks, and so on; furthermore, it provides additional security elements. Simultaneously, it has been verified to possess enhanced communication costs, and total bit size has been shortened to 3776 bits, which is improved by almost 6% compared to Wu et al.'s scheme. Therefore, we demonstrate that the proposed scheme is suitable for cloud-based IoT environments.
    Language English
    Publishing date 2023-12-11
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2052857-7
    ISSN 1424-8220 ; 1424-8220
    ISSN (online) 1424-8220
    ISSN 1424-8220
    DOI 10.3390/s23249766
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Epidemiologic study on changes in occurrence of hemorrhagic fever with renal syndrome in Republic of Korea for 17 years according to age group: 2001-2017.

    Park, Yohan

    BMC infectious diseases

    2019  Volume 19, Issue 1, Page(s) 153

    Abstract: Background: The potential effect of the inactivated hantavirus vaccine (IHV) remains controversial; however, it appears to be moderately effective for patients at high risk of hemorrhagic fever with renal syndrome (HFRS). This study of the epidemiology ... ...

    Abstract Background: The potential effect of the inactivated hantavirus vaccine (IHV) remains controversial; however, it appears to be moderately effective for patients at high risk of hemorrhagic fever with renal syndrome (HFRS). This study of the epidemiology of HFRS from 2001 to 2017 aimed to examine those at high risk of HFRS in the Republic of Korea (ROK), particularly in terms of disease distribution according to age.
    Methods: Raw data of HFRS patients recorded in Korea from 2001 to 2017 were obtained from the Korean Center for Disease Control and Prevention. Patients were divided into three age groups: ≤39, 40-69, and ≥ 70 years. The incidence rate per 100,000 individuals in each age group was calculated using population data. The 12-month year was divided into three-month quarters, and the number and proportion of patients corresponding to each quarter were calculated. The effects of time, sex, and quarter on HFRS incidence were assessed in a Poisson regression analysis.
    Results: From 2001 to 2017, 7048 HFRS patients were recorded nationwide. Among these patients, the proportion of patients aged ≥70 years increased gradually from 16.4% in 2001 to 43.9% in 2017. Regarding the quarter-year periods, the fourth quarter contained a significantly higher proportion of patients in the ≥70 years group (69.4%) compared to the other age groups. In the Poisson regression analysis, patients aged ≥70 years had a significantly higher relative risk of HFRS incidence within each quartile compared to those in the other age groups (2.102- and 10.029-fold in the third and fourth quarters, respectively). An analysis of disease incidence revealed a more distinct pattern in seasonal variation among those aged ≥70 years compared with other age groups.
    Conclusions: In this study of the incidence of HFRS in the ROK, subjects aged ≥70 years exhibited a gradual increase in incidence and a distinct pattern of seasonal variation. These results may be important to identify individuals in Korea who are at high risk of developing HFRS. In future, active immunization programs will be needed to control HFRS among these high-risk groups in Korea.
    MeSH term(s) Adult ; Aged ; Epidemiologic Studies ; Female ; Hemorrhagic Fever with Renal Syndrome/epidemiology ; Humans ; Incidence ; Male ; Middle Aged ; Poisson Distribution ; Republic of Korea/epidemiology ; Seasons
    Language English
    Publishing date 2019-02-13
    Publishing country England
    Document type Journal Article
    ISSN 1471-2334
    ISSN (online) 1471-2334
    DOI 10.1186/s12879-019-3794-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Provably Secure Mutual Authentication and Key Agreement Scheme Using PUF in Internet of Drones Deployments.

    Park, Yohan / Ryu, Daeun / Kwon, Deokkyu / Park, Youngho

    Sensors (Basel, Switzerland)

    2023  Volume 23, Issue 4

    Abstract: Internet of Drones (IoD), designed to coordinate the access of unmanned aerial vehicles (UAVs), is a specific application of the Internet of Things (IoT). Drones are used to control airspace and offer services such as rescue, traffic surveillance, ... ...

    Abstract Internet of Drones (IoD), designed to coordinate the access of unmanned aerial vehicles (UAVs), is a specific application of the Internet of Things (IoT). Drones are used to control airspace and offer services such as rescue, traffic surveillance, environmental monitoring, delivery and so on. However, IoD continues to suffer from privacy and security issues. Firstly, messages are transmitted over public channels in IoD environments, which compromises data security. Further, sensitive data can also be extracted from stolen mobile devices of remote users. Moreover, drones are susceptible to physical capture and manipulation by adversaries, which are called drone capture attacks. Thus, the development of a secure and lightweight authentication scheme is essential to overcoming these security vulnerabilities, even on resource-constrained drones. In 2021, Akram et al. proposed a secure and lightweight user-drone authentication scheme for drone networks. However, we discovered that Akram et al.'s scheme is susceptible to user and drone impersonation, verification table leakage, and denial of service (DoS) attacks. Furthermore, their scheme cannot provide perfect forward secrecy. To overcome the aforementioned security vulnerabilities, we propose a secure mutual authentication and key agreement scheme between user and drone pairs. The proposed scheme utilizes physical unclonable function (PUF) to give drones uniqueness and resistance against drone stolen attacks. Moreover, the proposed scheme uses a fuzzy extractor to utilize the biometrics of users as secret parameters. We analyze the security of the proposed scheme using informal security analysis, Burrows-Abadi-Needham (BAN) logic, a Real-or-Random (RoR) model, and Automated Verification of Internet Security Protocols and Applications (AVISPA) simulation. We also compared the security features and performance of the proposed scheme and the existing related schemes. Therefore, we demonstrate that the proposed scheme is suitable for IoD environments that can provide users with secure and convenient wireless communications.
    Language English
    Publishing date 2023-02-10
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2052857-7
    ISSN 1424-8220 ; 1424-8220
    ISSN (online) 1424-8220
    ISSN 1424-8220
    DOI 10.3390/s23042034
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Building a Korean morphological analyzer using two Korean BERT models.

    Choi, Yong-Seok / Park, Yo-Han / Lee, Kong Joo

    PeerJ. Computer science

    2022  Volume 8, Page(s) e968

    Abstract: A morphological analyzer plays an essential role in identifying functional suffixes of Korean words. The analyzer input and output differ from each other in their length and strings, which can be dealt with by an encoder-decoder architecture. We adopt a ... ...

    Abstract A morphological analyzer plays an essential role in identifying functional suffixes of Korean words. The analyzer input and output differ from each other in their length and strings, which can be dealt with by an encoder-decoder architecture. We adopt a Transformer architecture, which is an encoder-decoder architecture with self-attention rather than a recurrent connection, to implement a Korean morphological analyzer. Bidirectional Encoder Representations from Transformers (BERT) is one of the most popular pretrained representation models; it can present an encoded sequence of input words, considering contextual information. We initialize both the Transformer encoder and decoder with two types of Korean BERT, one of which is pretrained with a raw corpus, and the other is pretrained with a morphologically analyzed dataset. Therefore, implementing a Korean morphological analyzer based on Transformer is a fine-tuning process with a relatively small corpus. A series of experiments proved that parameter initialization using pretrained models can alleviate the chronic problem of a lack of training data and reduce the time required for training. In addition, we can determine the number of layers required for the encoder and decoder to optimize the performance of a Korean morphological analyzer.
    Language English
    Publishing date 2022-05-02
    Publishing country United States
    Document type Journal Article
    ISSN 2376-5992
    ISSN (online) 2376-5992
    DOI 10.7717/peerj-cs.968
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Provably Secure Three-Factor-Based Mutual Authentication Scheme with PUF for Wireless Medical Sensor Networks.

    Kwon, DeokKyu / Park, YoHan / Park, YoungHo

    Sensors (Basel, Switzerland)

    2021  Volume 21, Issue 18

    Abstract: Wireless medical sensor networks (WMSNs) are used in remote medical service environments to provide patients with convenient healthcare services. In a WMSN environment, patients wear a device that collects their health information and transmits the ... ...

    Abstract Wireless medical sensor networks (WMSNs) are used in remote medical service environments to provide patients with convenient healthcare services. In a WMSN environment, patients wear a device that collects their health information and transmits the information via a gateway. Then, doctors make a diagnosis regarding the patient, utilizing the health information. However, this information can be vulnerable to various security attacks because the information is exchanged via an insecure channel. Therefore, a secure authentication scheme is necessary for WMSNs. In 2021, Masud et al. proposed a lightweight and anonymity-preserving user authentication scheme for healthcare environments. We discover that Masud et al.'s scheme is insecure against offline password guessing, user impersonation, and privileged insider attacks. Furthermore, we find that Masud et al.'s scheme cannot ensure user anonymity. To address the security vulnerabilities of Masud et al.'s scheme, we propose a three-factor-based mutual authentication scheme with a physical unclonable function (PUF). The proposed scheme is secure against various security attacks and provides anonymity, perfect forward secrecy, and mutual authentication utilizing biometrics and PUF. To prove the security features of our scheme, we analyze the scheme using informal analysis, Burrows-Abadi-Needham (BAN) logic, the Real-or-Random (RoR) model, and Automated Verification of Internet Security Protocols and Applications (AVISPA) simulation. Furthermore, we estimate our scheme's security features, computation costs, communication costs, and energy consumption compared with the other related schemes. Consequently, we demonstrate that our scheme is suitable for WMSNs.
    MeSH term(s) Biometry ; Computer Security ; Computer Simulation ; Confidentiality ; Humans ; Telemedicine
    Language English
    Publishing date 2021-09-09
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2052857-7
    ISSN 1424-8220 ; 1424-8220
    ISSN (online) 1424-8220
    ISSN 1424-8220
    DOI 10.3390/s21186039
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: Kidney transplantation in highly sensitized recipients.

    Park, Yohan / Ko, Eun Jeong / Chung, Byung Ha / Yang, Chul Woo

    Kidney research and clinical practice

    2021  Volume 40, Issue 3, Page(s) 355–370

    Abstract: In kidney transplantation (KT), overcoming donor shortage is particularly challenging in patients with preexisting donor-specific antibodies (DSAs) against human leukocyte antigen (HLA), called HLA-incompatible KT (HLAi KT), carrying the risk of ... ...

    Abstract In kidney transplantation (KT), overcoming donor shortage is particularly challenging in patients with preexisting donor-specific antibodies (DSAs) against human leukocyte antigen (HLA), called HLA-incompatible KT (HLAi KT), carrying the risk of rejection and allograft loss. Thus, it is necessary to accurately evaluate the degree of sensitization before HLAi KT, and undertake appropriate pretreatment strategies. To determine the degree of sensitization, complement-dependent cytotoxicity has been the only method employed; the development of a method using flow cytometry further improved the test sensitivity. However, these tests present disadvantages, including the need for living cells, with a solid-phase assay developed to resolve this problem. Currently, the method using Luminex (Luminex Corp.) is widely used in clinical practice. As this method measures DSAs using single antigen beads, it is possible to classify immunological risks by measuring the type and amount of DSAs. Furthermore, there have been major advances in methods that involve DSA removal before HLAi KT. In the early stages of desensitization, plasmapheresis and intravenous immunoglobulins were the main treatment methods employed; however, the introduction of CD20 monoclonal antibody and proteasome inhibitors further increased the success rate of desensitization. Currently, HLAi KT has been established as an important transplant method, but an understanding of DSAs and a novel desensitization treatment are warranted.
    Language English
    Publishing date 2021-06-25
    Publishing country Korea (South)
    Document type Journal Article
    ZDB-ID 2656420-8
    ISSN 2211-9132
    ISSN 2211-9132
    DOI 10.23876/j.krcp.21.012
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Single-Step Approach toward Nitrones via Pyridinium Ylides: The DMAP-Catalyzed Reaction of Benzyl Halides with Nitrosoarenes.

    Jung, Yeonghun / Hong, Jee Eun / Kwak, Jae-Hwan / Park, Yohan

    The Journal of organic chemistry

    2021  Volume 86, Issue 9, Page(s) 6343–6350

    Abstract: A single-step approach is reported for the preparation of nitrones from benzyl halides and nitrosoarenes via pyridinium ylides, utilizing 4-dimethylaminopyridine (DMAP) catalyst and mild reaction conditions ( ... ...

    Abstract A single-step approach is reported for the preparation of nitrones from benzyl halides and nitrosoarenes via pyridinium ylides, utilizing 4-dimethylaminopyridine (DMAP) catalyst and mild reaction conditions (Li
    Language English
    Publishing date 2021-04-23
    Publishing country United States
    Document type Journal Article
    ZDB-ID 123490-0
    ISSN 1520-6904 ; 0022-3263
    ISSN (online) 1520-6904
    ISSN 0022-3263
    DOI 10.1021/acs.joc.1c00158
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Electrochemical C(sp

    Hong, Jee Eun / Yoon, Jisong / Baek, Woohyun / Kim, Kyumin / Kwak, Jae-Hwan / Park, Yohan

    Organic letters

    2022  Volume 25, Issue 1, Page(s) 298–303

    Abstract: Herein, we report direct electrochemical C( ... ...

    Abstract Herein, we report direct electrochemical C(sp
    MeSH term(s) Lactones/chemistry ; Benzofurans/chemistry
    Chemical Substances phthalide (8VV922U86J) ; Lactones ; Benzofurans
    Language English
    Publishing date 2022-12-30
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1523-7052
    ISSN (online) 1523-7052
    DOI 10.1021/acs.orglett.2c04211
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Comparison of the association intensity of creatinine and cystatin C with hyperphosphatemia and hyperparathyroidism in patients with chronic kidney disease.

    Min, Byungju / Yun, Sung-Ro / Yoon, Se-Hee / Kim, Jong-Dai / Hwang, Wan Jin / Hwang, Won Min / Park, Yohan

    Scientific reports

    2023  Volume 13, Issue 1, Page(s) 3855

    Abstract: Herein, we compared the association intensity of estimated glomerular filtration rate (eGFR) equations using creatinine (Cr) or cystatin C (CysC) with hyperphosphatemia and secondary hyperparathyroidism occurrence, which reflect the physiological changes ...

    Abstract Herein, we compared the association intensity of estimated glomerular filtration rate (eGFR) equations using creatinine (Cr) or cystatin C (CysC) with hyperphosphatemia and secondary hyperparathyroidism occurrence, which reflect the physiological changes occurring during chronic kidney disease (CKD) progression. This study included 639 patients treated between January 2019 and February 2022. The patients were divided into low- and high-difference groups based on the median value of the difference between the Cr-based eGFR (eGFR
    MeSH term(s) Humans ; Aged ; Cystatin C ; Creatinine ; Hyperphosphatemia/complications ; Glomerular Filtration Rate/physiology ; Renal Insufficiency, Chronic ; Hyperparathyroidism, Secondary/complications
    Chemical Substances Cystatin C ; Creatinine (AYI8EX34EU)
    Language English
    Publishing date 2023-03-08
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-023-31048-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

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