HIV 감염 산모의 제왕절개술을 위한 마취 관리 - 증례보고 -

정우석 대한마취통증의학회 2007 Anesthesia and pain medicine Vol.2 No.3

Human immunodeficiency virus (HIV), when infected causes various systemic changes and is the cause of the fatal disease called acquired immune deficiency syndrome (AIDS). With the sharp increase of infection in women, pregnancy can be complicated by HIV infection. Although there have been astonishing developments in therapy there are still many risks in the pregnant HIV patients. The anesthetic management will depend on the patients clinical status, current treatment as well as the well-being of the fetus. We report a case of spinal anesthesia in a 36-year-old pregnant HIV patient undergoing cesarean section.

작목선택의 신축성을 고려한 논밭 전환의 경제성 분석

정우석,서상택 한국농업경제학회 2020 농업경제연구 Vol.61 No.2

This study evaluated economic feasibility of switching rice paddy to upland field with crop selection flexibility. For the analysis, real options approach with switching option was adopted, in which farmers were assumed to have a right to switch rice paddy to upland field and make crop mix under uncertainty. Stochastic variables were total revenues of main crops in Chungcheong provinces, such as rice, soybean, spring potato, barley and sesame. The variables were empirically proven to follow Mean Reverting Process, which applied to Trinomial Option Pricing Model. The results showed that switching rice paddy to upland filed was economically feasible only with spring potato as a first crop while soybean was additionally feasible when considering second crop with barley under crop selection flexibility in upland field. However, the size of economic feasibility varied according to conversion cost from rice paddy to upland field and vice versa. The implication of this study was that crop selection flexibility under uncertainty provided more sensible decision for cropping system and conversion from rice paddy to upland field. In addition, the conversion cost from rice paddy to upland affected farmers’ decision to move to upland field, which could be a choice variable to policy makers.

논벼 농가의 재배기술 선택요인 분석

정우석,김성섭,서상택 한국농촌지도학회 2018 농촌지도와 개발 Vol.25 No.1

This study analyzed the selection factors for cultivation practices in paddy rice farming. For the study, conjoint model with part-worth utility was adopted, where model profiles included three attributes of yield, production cost, and cultivation difficulties and two levels for each attribute. The value of each level w as set up with experimental data obtained from National Institute of Crop Science. Ninety three rice farmers, who joined Korea Rural Economic Institute as farm er correspondences, were surveyed through internet with the profiles selected by factorial design. Result showed that rice farmers considered cultivation difficulties as the most important selection factor to adopt new cultivation practices followed by production cost and yield in consecutive order. This results were robust in spite of past experiences with new practices, willingness to adopt new practices in the future, imitative nature and government interventions.

Optimization of an Amorphous In-Ga-Zn-Oxide Semiconductor for a Top-Gate Transparent Thin-Film Transistor

정우석,윤성민,양신혁,황치선 한국물리학회 2009 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.54 No.5

We developed methods for a process optimization of amorphous In-Ga-Zn-oxide (IGZO, atomic ratio of the IGZO target ◇ In : Ga : Zn = 1 : 1 : 1) for transparent thin-film transistors (TTFTs). During the sputtering process, the ratio of oxygen to the total gas mixture could be chosen in order to obtain better electronic properties, depending on both the RF power and the sputtering pressure. The post-anneal treatment at 300℃ for 1 hour in an O2 ambient was the most suitable condition for the interface between the IGZO channel and the Al2O3 gate insulator Finally, the introduction of a first step (FS) during the deposition was very effective in improving the electronic properties of the top-gate IGZO-TTFTs. Through these optimization methods, we achieved a field effect mobility of 11.7 cm2/sV, a sub-threshold-swing of 0.36 and a drain current on-off ratio of ~108 in the top-gate IGZO-TTFT. We developed methods for a process optimization of amorphous In-Ga-Zn-oxide (IGZO, atomic ratio of the IGZO target ◇ In : Ga : Zn = 1 : 1 : 1) for transparent thin-film transistors (TTFTs). During the sputtering process, the ratio of oxygen to the total gas mixture could be chosen in order to obtain better electronic properties, depending on both the RF power and the sputtering pressure. The post-anneal treatment at 300℃ for 1 hour in an O2 ambient was the most suitable condition for the interface between the IGZO channel and the Al2O3 gate insulator Finally, the introduction of a first step (FS) during the deposition was very effective in improving the electronic properties of the top-gate IGZO-TTFTs. Through these optimization methods, we achieved a field effect mobility of 11.7 cm2/sV, a sub-threshold-swing of 0.36 and a drain current on-off ratio of ~108 in the top-gate IGZO-TTFT.

초등 진로전담교사의 역할과 과제

정우석 한국진로교육학회 2016 한국진로교육학회 학술대회지 Vol.2016 No.11

Super hybrid electrode for automobile windshield heaters and flexible-super hybrid electrode for biomedical applications

정우석 한국표면공학회 2019 한국표면공학회 학술발표회 초록집 Vol.2019 No.11

[S17-1] 형질전환 작물 개발 연구 동향

정우석 한국식품영양과학회 2009 한국식품영양과학회 학술대회발표집 Vol.2009 No.11

색채 조명 자극이 인지기능에 미치는 영향에 관한 연구

정우석,김기범,권대규,홍절운,김남균 한국정밀공학회 2004 한국정밀공학회 학술발표대회 논문집 Vol.2004 No.5월

Ultrasound-guided placement of a permanent peripheral nerve stimulator in a patient with complex regional pain syndrome -A case report-

정우석,김요한,이지용,이선열,김윤희,신용섭,이원형,고영권 대한마취통증의학회 2016 Anesthesia and pain medicine Vol.11 No.3

A 56-year-old man complained of continuous pain in the right foot that began 6 months after undergoing surgery on the right calcaneus bone. The patient was diagnosed with complex regional pain syndrome (CRPS) type I and was treated with medication, lumbar sympathetic ganglion blocks, epidural nerve blocks, and spinal cord stimulation. However, all treatments were halted because they were ineffective or complications developed. Peripheral nerve stimulation (PNS) was planned after confirming the analgesic effects of a sciatic nerve block, and the patient received PNS via minimally invasive ultrasound-guided electrode placement. PNS reduced the pain intensity and the incidence of paroxysmal pain. Other than discomfort at the battery insertion site (resolved with re-implantation), the patient developed no complications. These results suggest that ultrasound-guided minimally invasive PNS is a safe and effective treatment for patients with CRPS in the lower extremities.

호텔 주방종사자의 멘토 역량이 멘토 신뢰와 이중몰입에 미치는 영향

정우석 한국외식경영학회 2013 외식경영연구 Vol.16 No.1

This study aimed to suggest the implications for the effective management and education of hotel kitchen employees by empirically verifying the effect of the mentoring ability of hotel kitchen employees on trust in mentors and dual commitment. In order to accomplish such a research purpose, a survey was conducted with the subject of first class hotels in Korea. As a result of this study, the among Mentor's apability, personality, sensitivity, and work skills had significant effect on the Mentor's trust in the same order, and the Mentor's trust had significant effect on the commitment to the organization, yet it was not possible to know if it had an effect to the commitment to career. It is noteworthy that the abilities of mentors have an effect on the commitment to the organization depending on the mentor’s trust, and the mentor’s trust will affect cherishing and caring for the organization. Thus, it is needed to introduce the educational programs which can develop the abilities relating to mentor’s personality, sensitivity, and work skills and to establish the relation facilitating the commitment to the organization through the support by the manager. 본 연구는 호텔 주방 종사자의 멘토 역량이 멘토의 신뢰, 조직몰입, 경력몰입에미치는 영향관계를 실증적으로 검증하여 호텔 주방종사자의 효과적인 관리와 교육에 대한 시사점을 제공하고자 하였다. 총 362부의 자료를 분석에 사용하였으며 연구결과, 멘토 역량 중 인격, 감수성,업무스킬 순으로 멘토의 신뢰요인에 유의적인 영향을 미쳤고, 멘토에 대한 신뢰는조직몰입에 유의적인 영향을 미쳤으나 경력몰입에 유의한지는 알 수 없었다. 멘토의 역량은 멘토의 신뢰정도에 따라 조직몰입에 영향을 미친다는 것을 유의해야 하고 이러한 멘토의 신뢰도는 조직의 소중함, 조직에 대한 애착도, 몰입에 영향을 미치게 된다. 따라서 멘토의 인격과 감수성, 업무스킬에 해당하는 역량을 키워 줄 수 있는 교육 프로그램 도입과 경영자의 지원을 통해 조직에 몰입할 수 있는관계를 형성할 수 있게 하여야 한다.