• Title/Summary/Keyword: Event Study Analysis

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Signal Detection of Adverse Event of Metoclopramide in Korea Adverse Event Reporting System (KAERS) (의약품부작용보고시스템을 이용한 메토클로프라미드의 이상사례 실마리정보 도출)

  • Min-Gyo Jang;Yeonghwa Lee;Hyunsuk Jeong;Kwang-Hee Shin
    • Korean Journal of Clinical Pharmacy
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    • v.33 no.2
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    • pp.122-127
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    • 2023
  • Background: This study was aimed to identify the safety signals of metoclopramide in Korea Adverse Event Reporting System (KAERS) database by proportionality analysis methods. Methods: The study was conducted using Korea Institute of Drug Safety and Risk Management-Korea Adverse Event Reporting System Database (KIDS-KD) reported from January 2013 to December 2017 through KAERS. Signals of metoclopramide that satisfied the data-mining indices of proportional reporting ratio (PRR), reporting odds ratio (ROR) and information component (IC) were defined. The detected signals were checked whether they included in drug labels in the Ministry of Food and Drug Safety (MFDS), U.S. Food and Drug Administration (FDA) and Micromedex®. Results: A total number of drug AE reports associated with all drugs of data in this study was 2,665,429. Among them, the number of AE reports associated with metoclopramide was 22,583. Forty-two meaningful signals of metoclopramide were detected that satisfied with the criteria of data-mining indicies. Especially neurological signals including extrapyramidal reactions, represented in the safety letter of regulatory agencies were identified in this study. Conclusion: Neurological signals of metoclopramide including extrapyramidal reactions were detected. It is believed that this search for signals can contribute to ensuring safety in the use of metoclopramide.

An Event-Driven Failure Analysis System for Real-Time Prognosis (실시간 고장 예방을 위한 이벤트 기반 결함원인분석 시스템)

  • Lee, Yang Ji;Kim, Duck Young;Hwang, Min Soon;Cheong, Young Soo
    • Korean Journal of Computational Design and Engineering
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    • v.18 no.4
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    • pp.250-257
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    • 2013
  • This paper introduces a failure analysis procedure that underpins real-time fault prognosis. In the previous study, we developed a systematic eventization procedure which makes it possible to reduce the original data size into a manageable one in the form of event logs and eventually to extract failure patterns efficiently from the reduced data. Failure patterns are then extracted in the form of event sequences by sequence-mining algorithms, (e.g. FP-Tree algorithm). Extracted patterns are stored in a failure pattern library, and eventually, we use the stored failure pattern information to predict potential failures. The two practical case studies (marine diesel engine and SIRIUS-II car engine) provide empirical support for the performance of the proposed failure analysis procedure. This procedure can be easily extended for wide application fields of failure analysis such as vehicle and machine diagnostics. Furthermore, it can be applied to human health monitoring & prognosis, so that human body signals could be efficiently analyzed.

Seafarers Walking on an Unstable Platform: Comparisons of Time and Frequency Domain Analyses for Gait Event Detection

  • Youn, Ik-Hyun;Choi, Jungyeon;Youn, Jong-Hoon
    • Journal of information and communication convergence engineering
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    • v.15 no.4
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    • pp.244-249
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    • 2017
  • Wearable sensor-based gait analysis has been widely conducted to analyze various aspects of human ambulation abilities under the free-living condition. However, there have been few research efforts on using wearable sensors to analyze human walking on an unstable surface such as on a ship during a sea voyage. Since the motion of a ship on the unstable sea surface imposes significant differences in walking strategies, investigation is suggested to find better performing wearable sensor-based gait analysis algorithms on this unstable environment. This study aimed to compare two representative gait event algorithms including time domain and frequency domain analyses for detecting heel strike on an unstable platform. As results, although two methods did not miss any heel strike, the frequency domain analysis method perform better when comparing heel strike timing. The finding suggests that the frequency analysis is recommended to efficiently detect gait event in the unstable walking environment.

Analysis of accidents due to Urban Ground Excavation (지반굴착공사로 인한 사고사례 분석)

  • Seong, Joo-Hyun;Yoon, Jong-Ku;Jung, Soo-Hyung
    • Proceedings of the Korean Geotechical Society Conference
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    • 2010.09a
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    • pp.1087-1094
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    • 2010
  • With recent growth of population and industry, urban development grows into grand scheme of excavation and construction in urban area. As the development progress advanced, the developments get large and deepen. With a progress of technology development in geotechnical engineering in Korea, most our grand scheme of projects follows great progress. On the other hand, some excavation in construction site caused direct or indirect event that affects the adjacent or surrounding structures by excavation from time to time. This event usually happens around residential and commercial area where underground tunnel, subway station, commercial building, and high-rises excavation site is, could lead great damage on economy as well as personal injury or human casualties. In order to prevent this event, the study has to be done with analysis on various events of excavation and its cause. In this paper, the research has collected the various excavation events and their causes to analyze on each site and event to define emphasis on surrounding environment.

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The Application of User-based Sports Matching System using Customer Satisfaction and Loyalty Analysis for Sports Event Contents

  • Yu, Kyung-Mi;Moon, Seok-Jae
    • International Journal of Advanced Culture Technology
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    • v.10 no.3
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    • pp.325-331
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    • 2022
  • As the perception of sports activities changes positively, the desire and popularity for sports activities are rapidly increasing. Therefore, the popularity of sporting events is also increasing. Previous studies on sporting events have focused only on research in the field of social sciences. Therefore, in this study, in order to increase customer satisfaction and customer loyalty of sports event visitors, they were classified into challenge factors, competition factors, achievement factors, and relationship factors, and their effects on satisfaction and loyalty were studied and analyzed. And based on the research design model and empirical analysis, a user-based sports event matching system was proposed.

Economic Analysis of Jeju Island Power System Outage Using Event Study (이벤트 스터디 기법을 이용한 제주 정전의 경제적 파급효과 분석)

  • Kim, Jin-A;Lee, Jae-Hee;Lee, Jong-Uk;Joo, Sung-Kwan
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.59 no.1
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    • pp.46-50
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    • 2010
  • Power system outages can lead to huge economic losses for various industries. Jeju island power system outage in 2006 also caused significant social and economic impacts in Korea. There have been numerous attempts to evaluate the economic costs of power system outages. Power system outages can also have financial impacts on electric power industry. This paper attempts to analyze the economic impacts of the 2006 Jeju island power system outage on the values of the firms in the power industry using event study. Empirical analysis results are presented to show the economic impacts of the 2006 Jeju island outage on the values of the firms in the power industry.

The Development of the Standard Framework of Sports Event Process Management System (스포츠이벤트 프로세스 관리시스템 표준 프레임워크 개발)

  • Kim, Joo-Hak;Cho, Sun-Mi
    • Asia-pacific Journal of Multimedia Services Convergent with Art, Humanities, and Sociology
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    • v.9 no.1
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    • pp.815-824
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    • 2019
  • It is not easy to present a generalized operating model because the operating environment of a sport event is composed of a complex matrix structure. In this study, we propose 'standardization' which provides guidance of concept and process of sport event management to solve this sports event management problem. To purpose complete of this study, the frame was developed by the international standard ISO 9001: 2015 is applied. The standards framework for sports event process management system structure proposed in this study consists of scope of application, citing standard, Terms and definitions, organizational situation, leadership, planning, support, operation, performance evaluation, and improvement. This sport event process management system standard can be applied to any organization that wants to host, prepare, and operate sport events regardless of the form or scale of the sport event. In addition, this standard was focused on process management of life-cycle stages of sporting events, therefor it was possible to manage interrelationships and dependencies between processes and processes.

Numerical study to reproduce a real cable tray fire event in a nuclear power plant

  • Jaiho Lee ;Byeongjun Kim;Yong Hun Jung;Sangkyu Lee;Weon Gyu Shin
    • Nuclear Engineering and Technology
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    • v.55 no.4
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    • pp.1571-1584
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    • 2023
  • In this study, a numerical analysis was performed as part of an international joint research project to reproduce a real cable tray fire that occurred in the heater bay area of the turbine building of a nuclear power plant. A sensitivity analysis was performed on various input parameters to derive results consistent with the sprinkler activation time obtained from the fire event analysis. For all sensitive parameters, the normalized sprinkler activation time correlated well with the power function of the normalized sprinkler height. A correlation equation was developed to identify the sprinkler activation time at any location when determining the slope or fire growth rate under the conditions assuming a linear or t-squared heat release rate (HRR) time curve. Various cable fire growth assumptions were used to determine which assumption was better to provide the prediction coincident with the information given from the fire event analysis in terms of the sprinkler activation time and total energy generated from cables damaged by fire. In the comprehensive analysis of all the sensitive parameters, the standard deviation of the input parameters increased as the sprinkler height decreased. Within the range of the sensitivity parameter values given in this study, when considering all sprinkler heights, the standard deviation of the cable model change was the largest and that of the overhang position change was the smallest.

The Effects of Traumatic Event Type on Posttraumatic Growth and Wisdom: the Mediating effects of Social Support and Coping (외상 유형이 외상후성장 및 지혜에 미치는 영향: 사회적 지지와 대처의 매개효과)

  • Lee Sulim
    • Korean Journal of Culture and Social Issue
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    • v.19 no.3
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    • pp.319-341
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    • 2013
  • This study investigated the mediating effects of social support and coping on the relation between traumatic event type, posttraumatic growth and wisdom by the data from 247 adults by using path analysis. Besides, the difference of the level of posttraumatic growth and related variables between traumatic event type groups. At first, The results of the MANCOVA, person-related traumatic event group were higher than the non-personal traumatic event group in negative coping and trauma stress level, and lower in social support, positive coping, posttraumatic growth and wisdom. The path analysis results shows that traumatic event type was related to wisdom by mediate factors. Traumatic event type affected wisdom through social support, positive coping, posttraumatic growth. The significant mediators were social support, positive coping, posttraumatic growth. Negative coping was not a significant mediator between event type and posttraumatic growth. The results show that non-personal traumatic event group are tends to have high level of social support, positive coping, posttraumatic growth, and wisdom. In the end, we described that the implication and the limitation of this study and suggestions for following studies.

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The Influence of Successful Participation in Global Sport Events on the Korean Image, Product Image, Purchase Intention and Revisit Intention (성공적인 글로벌 스포츠 이벤트 참여가 한국인이미지, 제품이미지, 구매의도 및 재방문의도에 미치는 영향)

  • Kim, Ki-Tak;Lee, Wan;Kim, Hong-Seol
    • The Journal of the Korea Contents Association
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    • v.11 no.10
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    • pp.449-456
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    • 2011
  • The purpose of this study was to examine the change of Korean image, product image, purchase intention and revisit intention after successful results in the global sport event. A group of intercollegiate students were selected using the purposive sampling method for the study. Statistical methods were used for enhancing validity and reliability for this paper such as t-test, regression analysis, reliability analysis, frequency analysis, descriptive analysis and confirmatory factor analysis. The statistical package programs for this research were SPSS(ver. 12.0) and AMOS (ver. 7.0). The conclusion of this research were; (1) There are significant differences in factors such as Korean image, product image, purchase intention and revisit intention before and after the global sport events. (2) There are significant differences in factors before and after the global sport events when two groups were separated in terms of event involvements.