A comparison of clinical performance between i-gel and endotracheal tube in pediatric laparoscopic surgeries

홍정인,이태영,박상융,최소론,이승철,정찬종,김정호 대한마취통증의학회 2019 Anesthesia and pain medicine Vol.14 No.2

Background: The current evidence on the safe use of supraglottic airway for pediatric laparoscopic surgeries is limited. Although i-gel has been successfully used in adult laparoscopic surgeries, to our knowledge, no studies have compared it to the endotracheal tube (ETT) in pediatric laparoscopic surgeries. This study evaluated the effectiveness of i-gel over ETT with regards to the respiratory and hemodynamic parameters during pediatric laparoscopic surgeries. Methods: A total of 60 pediatric patients undergoing elective laparoscopic surgeries were randomly allocated to either the i-gel or ETT groups. Anesthetics used included ketamine, sevoflurane, and rocuronium. The primary outcome measured was the peak airway pressure (PAP) and the secondary outcomes measured were leak fraction, endtidal CO2, respiratory rate, insertion time, heart rate, blood pressure and perioperative complications. Results: The PAP during surgeries was higher in the ETT group than in the i-gel group. There were no statistically significant differences in the leak fraction, end-tidal CO2, and respiratory rate. The i-gel group had a shorter insertion time compared with the ETT group. The changes in heart rate were comparable in both groups. However, systolic and diastolic pressures were higher in the ETT group following intubation, before and after the creation of pneumoperitoneum. The incidence of perioperative complications was similar in both groups. Conclusions: The i-gel provided adequate ventilation with lower PAP compared with ETT. In addition, it provided minimal hemodynamic changes compared with ETT. Therefore, the i-gel may provide a suitable alternative to ETT in pediatric laparoscopic surgeries.

특허 분석을 통한 자동차 부품 산업 기술 동향 분석

홍정인,심지수,이희연,이덕주 대한산업공학회 2022 대한산업공학회 춘계학술대회논문집 Vol.2022 No.6

자동차 내장 하드트림 부품의 명도별 적정 광택도 연구

홍정인,최경실 한국색채학회 2020 한국색채학회 논문집 Vol.34 No.1

In recent years of the color science field, there has been a lot of interest in research projects on the spectral prediction model, which can quantify not only color but also light and texture. In the absence of predictive models and measuring instruments, gloss management has received attention in color management. In this study, two surveys were conducted to obtain the visual satisfaction and color accuracy of the hard trim components in car interiors. First, the Lightness determined the most significant color attribute that affects the degree of gloss, and we revealed the correlation between Lightness and glossiness. Second, to find the degree of gloss that can satisfy both emotional and functional aspects, we conducted an irradiation and scratch resistance / staining test. In this study, 88 gray / beige scale group samples were searched to find the proper gloss for automotive interior hard trim parts, with correlation analysis through color / gloss measurement, designer and scratch resistance / stain. The following conclusions were made through analysis and findings. ① from lightness 25 to 60, ② from lightness 60 to 70, ③ over Lightness 70 color samples corresponding to Lightness indicate that the glossiness criteria should be set separately. As a result of the survey on the preferred gloss for color experts, up to 1.5GU of lightness 25 was preferred, and scratch resistance and stain resistance were satisfactory. Finally, the preferred glossiness survey of color experts favored 1.5GU on a Lightness 25, while the scratch and contamination acceptance criteria were all satisfied. In conclusion, we should controlGU such as between Lightness 25 and Lightness 60 is 1.5 ±0.2GU, between Lightness 60 and Lightness 70 is 2.0 ±0.2GU, and between Lightness over 70 is 2.5 ±0.2GU. However, it is recommended to combine visual evaluation.

국민DR을 위한 최적 경매 메커니즘 설계

홍정인,이덕주 대한산업공학회 2022 대한산업공학회 추계학술대회논문집 Vol.2022 No.11

Thoracomyoplasty for Chronic Empyema and Osteoradionecrosis of the Chest Wall

홍정인,신홍주,조원민,신재승,황진욱 대한흉부외과학회 2021 Journal of Chest Surgery (J Chest Surg) Vol.54 No.3

Herein, we report a case in which thoracomyoplasty was performed to manage chronic postlobectomy empyema (PLE). A 54-year-old male patient with a surgical history of right upper lobectomy and thymectomy 35 years previously who had undergone adjuvant ra- diotherapy presented with purulent discharge on the anterior chest wall. The patient was diagnosed with chronic PLE with ascending infection and concurrent osteonecrosis of the parasternum. Proper drainage was performed for local infection control and the dead spaces were successfully closed with muscle flaps. There have been no complications to date.

기업의 온-프레미스 시스템의 퍼블릭 클라우드 전환의도에 영향을 미치는 요인에 관한 연구 : PPM(Push-Pull-Mooring) 모형을 사용하여

홍정인 한국기술혁신학회 2019 한국기술혁신학회 학술대회 발표논문집 Vol.2019 No.5

가정형 호스피스·완화의료에서 인생 회고 기법을 활용한 노래 중심 음악치료가 환자와 주 돌봄 가족의 삶의 질과 가족 관계에 미치는 영향

홍정인,김경숙 한국예술치료학회 2021 한국예술치료학회지 Vol.21 No.1

본 연구는 인생 회고 기법을 활용한 노래 중심 음악치료가 가정형 호스피스·완화의료 서비스를 받고 있는 환자와 주 돌봄 가족의 삶의 질과 가족 관계에 미치는 영향을 규명하기 위해 실시하였다. 연구 대상은 I광역 시 B구 C대학병원의 가정형 호스피스 완화의료 서비스 이용 가족 중 자발적으로 연구 참여에 동의한 환자와 주 돌봄 가족 1인 10쌍으로 총 20명이었다. 사전 검사 후, 지나온 삶을 회고하고 지나온 과거를 재경험하며 자신의 삶에 가치를 부여하도록 유도하는 인생 회고 기법을 활용한 노래 중심 음악치료 프로그램을 주 2회 씩 2주간 총 4회기 중재하고, 사후 검사를 시행하였다. 대상자들의 변화를 측정하기 위해 ‘호스피스 암 환자 의 삶의 질 측정 도구(Hospice Quality of Life Scale: HQLS)’, ‘삶의 질 측정 도구(Quality of Life: QOL)’ 그리고 ‘가족 관계의 질 측정 도구(Quality of Relationship between caregiver and patient)’를 사용하였다. 통계 분석 결과, 가정형 호스피스·완화의료 환자(Z=-2.805, p<01)와 주 돌봄 가족(Z=-2.701, p<.01)의 삶의 질에 유의미한 향상이 나타났으며, 가족 관계의 질(Z=-2.803, p<.01) 역시 통계적으로 유의미하게 증진되었다. 이러한 결과들은 총체적인 돌봄에 의한 환자와 가족의 삶의 질 향상이라는 호스피스·완화의료 의 목적과 목표에 부합하는 것으로, 가정형 호스피스·완화의료 환자와 주 돌봄 가족의 삶의 질과 가족 관계의 질 향상을 위한 음악치료 적용의 필요성을 시사한다. The purpose of this study was to investigate the effect of song-oriented music therapy using life-retrospective techniques on the quality of life and family relationship of patients and primary caregivers receiving home-based hospice and palliative care services. The subjects of this study consisted of 10 pairs of patients and one of his(her) primary caregivers, a total of 20 subjects. After the pre-test, a song-oriented music therapy program using life-retrospective techniques that induce reflecting the past, re-experiencing the past, and giving value to life was performed twice a week for a total of 4 sessions for 2 weeks; followed by a post-test. The tools used to measure the changes in subjects were Hospice Quality of Life Scale (HQLS), Quality of Life (QOL), and Quality of Relationship between caregiver and patient. The results of statistical analysis showed a significant improvement in the quality of life of home-based hospice and palliative care patients (Z=-2.805, p<01), primary caregivers (Z=-2.701, p<.01), and quality of the relationship between caregiver and patient (Z=-2.803, p<.01). These results are consistent with the goals and objectives of hospice and palliative care in improving the quality of life of patients and families by holistic care and signifies that the promotion of home-based hospice and palliative music therapy are strongly required to improve the patients’ and caregivers’ quality of life and family relationship.

새 과학교육과정의 내용 구성 : 논문 발표 2 ; 인지갈등 정도에 따른 응답특성 분석

홍정인,권재술 한국과학교육학회 2006 한국과학교육학회 학술발표 및 세미나집 Vol.- No.-

특허 분석을 통한 자동차 부품 산업 기술 동향 분석

홍정인,심지수,이희연,이덕주 한국경영과학회 2022 한국경영과학회 학술대회논문집 Vol.2022 No.6

IT 혁신 의지, 사용자 저항 및 클라우드 전환 의도와의 관계에 관한 연구

홍정인,서영욱 한국지식정보기술학회 2022 한국지식정보기술학회 논문지 Vol.17 No.5

본 연구는 IT혁신의지, 사용자저항 및 클라우드 전환의도 간의 관계를 분석하고자 IT부서의 직원 152명의 응답데이터를 사용하었다. 본 연구에서는 조직지원인지, 제도기반신뢰와 IT혁신의지와의 구조적 관계, IT혁신의지, IT역량과 사용자저항과의 구조적 관계, IT혁신의지, 사용자저항과 클라우드 전환의도와의 구조적 관계를 분석하고자 PLS(부분최소제곱법)를 적용하였다. 본 연구의 실증 분석 결과는 다음과 같다. 첫째, 조직지원인지와 클라우드의 제도기반신뢰는 IT혁신의지에 긍정적 영향을 미친다. 둘째, IT혁신의지와 IT역량은 사용자저항에 부정적 영향을 미친다. 셋째, IT혁신의지는 클라우드 전환의도에 긍정적 영향을 미친다. 하지만, 사용자저항은 클라우드 전환의도에 부정적 영향을 미친다. 따라서, 본 연구가 제시한 가설들은 모두 채택이 되었다. 본 연구가 제시한 시사점은 다음과 같다. 조직은 기술혁신을 위해 조직적 지원을 준비하고, 제도적 신뢰를 포함하는 클라우드 제공자를 선택해야 하며, IT역량을 강화하는 노력을 해야 한다. 이에 더해, 조직은 혁신 기술로 전환하는 과정에서 사용자저항을 줄일 수 있는 방안도 검토할 필요가 있다. 우리는 본 연구의 학술적 기여와 함께 클라우드 전환을 준비하는 기업들에 실질적인 시사점을 제공할 것으로 기대한다. This study explored the relationship between IT Innovation Willingness, User Resistance and Cloud Switching Intention using a sample of 152 employees(in the IT Department). In this study, we adopt the PLS(partial least square) for analyzing structural relationships 1) from Perceived Organization Support and Institution-based Trust of Cloud to IT Innovation Willingness, 2) from IT Innovation Willingness and IT Capabilities to User Resistance, 3) from IT Innovation Willingness and User Resistance to Cloud Switching Intention. We found results by empirical examination. First. Perceived Organization Support and Institution-based Trust in Cloud have positive effects on IT Innovation Willingness. Second, IT Innovation Willingness and IT Capabilities have negative effects on User Resistance. Third, IT Innovation Willingness have positive effects on Cloud Switching Intention. However, User Resistance have negative effects on Cloud Switching Intention. Therefore, the hypotheses we suggested in this study were accepted. The implications of this study are as follows. Organizations should prepare organizational support for technological innovation, select cloud providers including institutional trust, and make efforts to strengthen IT capabilities. In addition, it is necessary to consider ways to reduce user resistance in the process of switching to innovative technologies. Along with the academic contribution of this study, we expecting to provide practical implications to companies preparing for cloud transformation.