Effects of high‐performance work systems on transformational leadership and team performance: Investigating the moderating roles of organizational orientations

Han, Joo Hun,Liao, Hui,Taylor, M. Susan,Kim, Seongsu Wiley Periodicals, Inc. 2018 Human Resource Management Vol.57 No.5

<P>This study integrates strategic human resource management (SHRM) and transformational leadership (TFL) literatures to address gaps in each of the two literatures. Building on the concept of strategically targeted HRM systems and the contingency perspective in SHRM, we propose that an organization's high‐performance work system (HPWS) affects team managers' TFL, and that the emergence of TFL and the effectiveness of TFL on team performance are contingent on organizational adaptation and efficiency orientations. Analyses of multilevel data from 179 teams in 44 organizations revealed a positive relationship between HPWS and TFL, which was positively and negatively moderated by adaptation and efficiency orientations, respectively. Further, TFL was positively related to team performance and negatively moderated by efficiency orientation. Finally, the results supported a multilevel, moderated mediation effect with the indirect effect of HPWS on team performance via TFL varying significantly as a function of adaptation and efficiency orientations. Implications for the SHRM and leadership literatures and practice are discussed.</P>

Validity and reliability of POM-Checker in measuring shoulder range of motion : Protocol for a single center comparative study

Chu, Hongmin,Joo, Seongsu,Kim, Jinyoung,Kim, Jae Kyoun,Kim, Cheolhyun,Seo, Jihye,Kang, Dae Gill,Lee, Ho Sub,Sung, Kang-Keyng,Lee, Sangkwan Williams & Wilkins Co 2018 Medicine Vol.97 No.25

<P><B>Abstract</B></P><P><B>Introduction:</B></P><P>Assessments of the range of motion (ROM) in human joints have been widely used to evaluate the joint condition. Although maker based motion capture system is the most popular and practical method in the clinical field, there have been limitations such as the relatively long time required in procedure or influence of attached markers on natural movement. Recently, markerless motion capture systems have been actively developed due to their relatively lower cost and convenience for installation. The POM-Checker (Team Elysium Inc., Seoul, Rep of Korea), a markerless motion capture system, was developed with new algorithms to assess the ROM in human joints. However, the measure of the POM-Checker has not been compared with a golden-standard device in evaluating the ROM in the human joints. So we developed a protocol to evaluate the validation and reliability of the POM-Checker in measuring the shoulder ROM. This study will also provide a standard procedure to measure the shoulder ROM with the POM-Checker and 3D motion analysis system simultaneously.</P><P><B>Methods/design:</B></P><P>This protocol is for a single institution comparative study to evaluate the validity and reliability of POM-Checker. Six participants will be recruited. We will measure the angles of shoulder abduction and flexion with POM-Checker and 3D motion analysis system simultaneously. The primary outcome is the angles of shoulder abduction and flexion.</P><P><B>Discussion:</B></P><P>This will be the first study to analyze the validity and reliability of POM-Checker in measuring shoulder ROM. Although the sample size of this study is small, it may not influence on the results conclusively, because the measures are very precise numerical angles. Furthermore, the angles of shoulder movements will be measured with both devices simultaneously.</P><P><B>Conclusion:</B></P><P>The results of the study will be helpful to find out the validity and reliability of a new developed ROM measure device, POM-Checker, by comparison with a golden standard system, 3D motion capture system, in measuring the shoulder ROM. It will also contribute to use of the POM-Checker in measuring the ROMs in many human joints</P>

CT-based MR Image Approximation using Cycle-Consistent Adversarial Networks

Cheng-Bin Jin(김성빈),Hakil Kim(김학일),Seongsu Joo(주성수),Eunsik Park(박은식),Young Saem Ahn(안영샘),In Ho Han(한인호),Jae Il Lee(이재일),Xuenan Cui(최학남) 대한전기학회 2019 대한전기학회 학술대회 논문집 Vol.2019 No.2

Computed tomography (CT) is widely used in various clinical applications. Magnetic resonance imaging (MRI) provides more anatomical details than CT for diagnostic purposes. However, the price of an MRI puts a heavy burden on low-income patients. This leads patients to undergo low-cost CT scans instead of MRIs, and this causes them to miss the opportunity for early diagnosis. To generate additional information and to increase the diagnostic value of CT, this paper proposes a method to approximate an MR image using a CT scan with the adversarial cycle-consistent networks. A novel objective function is introduced, consisting of adversarial loss, cycle-consistent loss, voxel-wise loss, gradient difference loss, and perceptual loss. Experimental results show that the proposed method significantly outperforms all baseline methods in all measurements, achieving the lowest mean absolute error and root mean square error and the highest peak-signal-to-noise-ratio, structural similarity, and Pearson correlation coefficient. This study can help the low-income patients, who cannot undergo MRI in clinical diagnosis, and patients in the developing countries where CT is the only diagnostic device.

Human Capital Factors Affecting Human Resource (HR) Managers' Commitment to HR and the Mediating Role of Perceived Organizational Value on HR

Oh, In‐,Sue,Blau, Gary,Han, Joo Hun,Kim, Seongsu Wiley Periodicals, Inc. 2017 Human Resource Management Vol.56 No.2

<P><B>Abstract</B></P><P>Human resource (HR) managers’ commitment to their occupation (HR) leads to the proper delivery and implementation of HR practices and, therefore, is deemed as a critical factor for the success of HR practices. Based on sociocognitive, human capital, and signaling theories, this study examines: (a) HR managers’ own and their chief HR officer's (CHRO) HR‐specific human capital as antecedents of their commitment to HR, and (b) the mediating mechanism through which the CHRO’s HR‐specific human capital positively influences HR managers’ commitment to HR. Based on 146 HR managers from 146 organizations in South Korea, the findings of the current study suggest that HR managers with higher levels of HR‐specific human capital and those working with CHROs with higher levels of HR‐specific human capital tend to have higher levels of commitment to HR. In addition, CHROs with higher levels of HR‐specific human capital positively influence HR managers’ commitment to HR by signaling to them that HR and its function are valued and cared about by their organizations. Theoretical and practical implications of this study are discussed along with study limitations and further research directions. © 2015 Wiley Periodicals, Inc.</P>

How do readers choose to undergo treatments based on medical articles?

Lee, Ye-Seul,Kim, Jeongjoo,Joo, Seongsu,Go, Byeongho,Lee, Hyangsook,Chae, Younbyoung Williams & Wilkins Co 2016 Medicine Vol.95 No.49

<P><B>Abstract</B></P><P>The purpose of this study is to study the reader's cognitive process in reading medical articles and its influence on the decision-making process. Twenty-four participants completed a survey pertaining to 36 medical articles on new treatments with similar text structures and similar titles. Participants rated each article on its level of interest, informativeness, and reliability, and were asked whether they would choose the treatments in the news article. A cognitive decision-making model can be applied to health contexts, in which the reader's subjective ratings on interest, informativeness, and reliability were positively associated with choosing new treatments. The decision-making process path from the perception of informativeness was mediated by the reliability of the news article. Interest was positively linked to informativeness, although it was not directly associated with reliability. This study shows that readers’ subjective ratings on health information can indicate their decision-making. Artifacts in the information that might incite emotions or interest, such as framing, can affect the reader's decision-making process.</P>

인진오령산 복용 후 간기능 혈액화학수치가 호전된 1례 보고

Hong Hyeon-Joon,Jeong Myeongseok,Joo Seongsu,Chu Hongmin 대한침도의학회 2023 대한침도의학회지 Vol.7 No.1

Background: The purpose of this study is to report on patients who showed improvement in liver function test results following the administration of Injinoryeong-san. Methods: A woman visited seeking herbal medicine prescription for symptoms of numbness in her hands and feet. Abnormal elevation of ALT and AST was observed in the blood test conducted before prescribing herbal medicine, so I administered IJORS. Results: After two weeks of taking IJORS, the patient’s liver function test (LFT) returned to normal, and additional improvements were observed in symptoms such as indigestion and fatigue. Conclusion: LFTs are helpful in assessing the patient’s liver function before prescribing herbal medicine. IJORS can be prescribed for patients with abnormal high LFTs.

Dynamics of Cecal Microbiome Composition and Short-Chain Fatty Acid Profiles across the Lifespan of Rats

Huitae MIN,Soonyoung PARK,Taehyun KIM,Seongsu NA,Young-Tae PARK,Taejung KIM,Jungyeob HAM,Soo In CHOI,Joo Hee SON,Nayoung KIM,Yong Sung KIM,Ryoung Hee NAM,Ji Hyun PARK,Chin-Hee SONG,Jeong Eun YU,Dong H 한국생물공학회 2023 한국생물공학회 학술대회 Vol.2023 No.10

하이브리드 로켓 모터를 이용한 덕티드 로켓용 가스발생기 연구

한승주(Seongjoo HAN),김계환(Kyehwan KIM),김준성(Junseong KIM),주성민(Seongmin JOO),김성수(Seongsu KIM),문희장(Heejang MOON),김진곤(Jinkon KIM) 한국추진공학회 2014 한국추진공학회 학술대회논문집 Vol.2014 No.12

본 연구에서는 하이브리드 모터를 이용하여 덕티드 로켓용 가스발생기의 연소시험을 수행하였다. 본 연구는 본격적인 연구를 진행하기에 앞서 연료농후가스 발생여부와 앞으로의 연구에 대한 파라메터 도출을 목표로 하였다. 본 연구에서 연료는 폴리에틸렌, 실린더 형 7공 multi-port 그레인을 사용하였으며 산화제는 GN2O와 LN2O를 이용하였다. 연소 실험 결과 O/F 비 2.1 ~ 4.5, 당량비 1.8 ~ 3.8 의 연료과농상태의 연소가스를 발생시켰으며 산화제 유속이 증가함에 따라 발생되는 연료농후가스의 O/F 비가 증가함을 확인하였다. 또한 연소가스 온도변화를 통해 하이브리드로켓에서 발생되는 O/F shift 현상을 분석하였다. In this study, the firing test of ducted rocket gas generator using hybrid rocket motor was performed. This study aims to find out the feasibility of gas generator using hybrid motor for ducted rocket and to deduct experimental parameters for the future work. HDPE cylindrical multi-port grain was used as fuel, Gas Nitrous Oxide and Liquid Nitrous Oxide was used as oxidizer. As a result, it was succeed to gain fuel rich gas which has O/F ratio 2.1 to 4.5 and equivalence ratio 1.8 to 3.8. Increasing oxidizer mass flux, the O/F ratio increased and the “O/F shift” phenomena was also investigated.

Spine Computed Tomography to Magnetic Resonance Image Synthesis Using Generative Adversarial Networks : A Preliminary Study

Lee, Jung Hwan,Han, In Ho,Kim, Dong Hwan,Yu, Seunghan,Lee, In Sook,Song, You Seon,Joo, Seongsu,Jin, Cheng-Bin,Kim, Hakil The Korean Neurosurgical Society 2020 Journal of Korean neurosurgical society Vol.63 No.3

Objective : To generate synthetic spine magnetic resonance (MR) images from spine computed tomography (CT) using generative adversarial networks (GANs), as well as to determine the similarities between synthesized and real MR images. Methods : GANs were trained to transform spine CT image slices into spine magnetic resonance T2 weighted (MRT2) axial image slices by combining adversarial loss and voxel-wise loss. Experiments were performed using 280 pairs of lumbar spine CT scans and MRT2 images. The MRT2 images were then synthesized from 15 other spine CT scans. To evaluate whether the synthetic MR images were realistic, two radiologists, two spine surgeons, and two residents blindly classified the real and synthetic MRT2 images. Two experienced radiologists then evaluated the similarities between subdivisions of the real and synthetic MRT2 images. Quantitative analysis of the synthetic MRT2 images was performed using the mean absolute error (MAE) and peak signal-to-noise ratio (PSNR). Results : The mean overall similarity of the synthetic MRT2 images evaluated by radiologists was 80.2%. In the blind classification of the real MRT2 images, the failure rate ranged from 0% to 40%. The MAE value of each image ranged from 13.75 to 34.24 pixels (mean, 21.19 pixels), and the PSNR of each image ranged from 61.96 to 68.16 dB (mean, 64.92 dB). Conclusion : This was the first study to apply GANs to synthesize spine MR images from CT images. Despite the small dataset of 280 pairs, the synthetic MR images were relatively well implemented. Synthesis of medical images using GANs is a new paradigm of artificial intelligence application in medical imaging. We expect that synthesis of MR images from spine CT images using GANs will improve the diagnostic usefulness of CT. To better inform the clinical applications of this technique, further studies are needed involving a large dataset, a variety of pathologies, and other MR sequence of the lumbar spine.