긴꼬리가루깍지벌레와 붉은몸긴꼬리가루깍지벌레의 국내 분포 및 온도별 발육특성

정대훈,경예진,김현경,구현나,조수원,김길하,Jeong, Dae-Hoon,Kyung, Ye Jin,Kim, Hyunkyung,Koo, Hyun-Na,Cho, Soowon,Kim, Gil-Hah 한국응용곤충학회 2018 한국응용곤충학회지 Vol.57 No.2

국내 분포조사가 되어 있지 않은 긴꼬리가루깍지벌레와 붉은몸긴꼬리가루깍지벌레를 대상으로 3년간(2015~2017년) 281지점의 관엽식물과 666지점의 과수를 조사하였다. 관엽식물의 경우 긴꼬리가루깍지벌레는 34지점에서 발견되었고, 붉은몸긴꼬리가루깍지벌레는 87지점에서 발견되었으나 과수에서는 두 종 모두 발견되지 않았다. 분포조사를 통해 채집한 긴꼬리가루깍지벌레와 붉은몸긴꼬리가루깍지벌레는 실내사육하며 온도별 발육특성을 조사하였다. 긴꼬리가루깍지벌레 암컷 약충은 $14^{\circ}C$에서 정상적인 발육을 하지 못하였으며, $16^{\circ}C$에서는 361.4일로 발육기간이 가장 길었으며 $32^{\circ}C$에서는 39.0일로 가장 짧았다. 긴꼬리가루깍지벌레 암컷 성충수명은 $28^{\circ}C$에서 71.7일로 가장 짧았으며, 산자수의 경우 $32^{\circ}C$에서 177.7마리로 가장 많았다. 붉은몸긴꼬리가루깍지벌레 암컷 약충은 $12^{\circ}C$에서 정상적인 발육을 하지 못하였으며 $14^{\circ}C$에서 184.9일로 발육기간이 가장 길었으며, $28^{\circ}C$에서는 21.5일로 가장 짧았다. 붉은몸긴꼬리가루깍지벌레 암컷 성충수명은 $28^{\circ}C$에서 51.5일로 가장 짧았으며, 산자수의 경우 $28^{\circ}C$에서 143.8마리로 가장 많았다. 세대순증가율($R_0$)과 내적자연증가율($r_m$)은 긴꼬리가루깍지벌레는 각각 $32^{\circ}C$에서 162.3, 0.127이며, 붉은몸긴꼬리가루깍지벌레는 각각 $28^{\circ}C$에서 98.3, 0.139로 가장 크게 나타났다. 따라서, 긴꼬리가루깍지벌레와 붉은몸긴꼬리가루깍지벌레의 최적 온도는 각각 $32^{\circ}C$와 $28^{\circ}C$로 판단되며 국내에서의 월동은 불가능한 것으로 보인다. We surveyed 281 sites of tropical plants and 666 sites of fruit plants for three years (2015~2017) on Pseudococcus longispinus and Pseudococcus orchidicola which have not been surveyed domestically. In tropical plants, P. longispinus were found at 34 sites, while P. orchidicola were found at 87 sites. However, both species were not found in fruit plants. The developmental characteristics of P. longispinus and P. orchidicola were investigated under various temperatures. The female nymph of P. longispinus did not develop at $14^{\circ}C$ and the developmental period was the longest at $16^{\circ}C$ for 361.4 days and the shortest at $32^{\circ}C$ for 39.0 days. The longevity of female adult of P. longispinus was the shortest at $28^{\circ}C$ as 71.7 days. The number of offspring was highest at 177.7 at $32^{\circ}C$. The female nymph of P. orchidicola did not develop at $12^{\circ}C$. However, the developmental period was the longest at $14^{\circ}C$ for 184.9 days and the shortest at $28^{\circ}C$ for 21.5 days. The longevity of female adult of P. orchidicola was the shortest at 51.5 days at $28^{\circ}C$. The number of offspring was highest at 143.8 at $28^{\circ}C$. The net reproductive rate ($R_0$) and intrinsic rate of increase ($r_m$) of P. longispinus were 162.3 and 0.127 at $32^{\circ}C$, respectively. The $R_0$ and $r_m$ of P. orchidicola were 98.3 and 0.139 at $28^{\circ}C$, respectively. These results suggest that the optimum temperature of P. longispinus and P. orchidicola was $32^{\circ}C$ and $28^{\circ}C$, respectively. Therefore, we guess that they can never be able to survive the winter of Korea.

르노 그룹(Renault S.A.)의 성장전략 : 다이아몬드 모델과 ABCD 모델을 기반으로

정대훈(Dae-Hoon, Jeong),박상현(Sang-Hyeon, Park) 한국창업학회 2021 한국창업학회지 Vol.16 No.5

본 연구는 4차 산업 혁명 시대 도래로 사회 전반에 걸쳐 파괴적인 혁신이 일어나고 있는 점에 주목, 자동차 산업의 대표적인 기업인 르노 그룹의 경쟁력을 분석하고자 하였다. 특히, 과거 내연기관 차량 중심 체제에서 자율주행, 친환경 자동차로 자동차 산업의 패러다임이 변화되고 있음에 따라, 해당 현안을 바탕으로 르노 그룹이 발전해 나갈 기업 성장 방향을 제시하고자 하였다. 본 연구를 진행하고자 먼저 자동차 산업 현황을 검토하였으며, 이후 르노 그룹이 성장 가능하였던 경쟁우위들을 요인별로 분석하고자 하였다. 분석방법으로 마이클 포터의 다이아몬드 모델 분석에 기초하였다. 또한 각각의 요인들을 바탕으로 르노그룹이 성장해 나갈 발전 방향을 제시하고자 ABCD 모델을 적용하여 기업 전략 방안을 제시하였다. This study focused on the spreading innovation followed by the fourth industrial revolution and analyzed the competitiveness of Renault Co., Ltd. which is a primary automobile enterprise in France. Especially, as the car industry has been changing its aim to the eco-friendly cars from the engine cars, this study presented a growth direction of Renault Co., Ltd. This paper first examines the current state of the car industry and the growth background of Renault Co., Ltd. and then analyzes the previous competitive advantage of Renault Co., Ltd. In addition, we analyze the competitive advantage factor of Renault Co., Ltd. based on Diamond model of Porter(1990) and apply the ABCD model to present strategic direction going forward.

상피성 난소암에서 HER-2/neu 단백 발현

정대훈 ( Dae Hoon Jeong ),김영남 ( Young Nam Kim ),박영미 ( Young Mi Park ),조인호 ( In Ho Cho ),서영진 ( Young Jin Seo ),손영실 ( Young Sil Son ),정수전 ( Su Jeon Jeong ),이경복 ( Kyung Bok Lee ),성문수 ( Moon Su Sung ),김기태 ( 대한산부인과학회 2006 Obstetrics & Gynecology Science Vol.49 No.6

목적: 상피성 난소암에서 HER-2/neu 단백의 발현 정도를 알아보고, 난소암의 예후인자들과의 연관성을 확인하여 HER-2/neu 단백의 과발현이 난소암의 예후인자로 이용될 수 있는지를 알아보고자 하였다. 연구방법: 1999년 1월 1일부터 2002년 12월 31일까지 개복술을 시행하여 상피성 난소암으로 진단받은 45예 환자의 파라핀포매 조직을 대상으로 면역조직화학염색을 이용하여 HER-2/neu 단백 발현을 조사하였고 나이, 조직학적 유형, 수술 병기, 2㎝ 이상의 잔류 종양의 유무, 재발 등의 임상병리학적 특정들과의 상관관계를 알아보았다. 결과: 상피성 난소암에서의 HER-2/neu 단백의 과발현은 31.1% (14/45)로 나타났다. 첫 수술 후의 잔류 종양의 크기가 2㎝ 보다 큰 경우가 잔류종양의 크기가 2㎝ 이하인 경우보다 HER-2/neu 단백의 과발현이 높았으며 (60.0% vs 22.9%, pp=0.049), 재발된 경우가 재발되지 않은 경우보다 HER-2/neu 단백의 과발현이 높았다. (57.1% vs 24.0%, p=0.029). 그러나 HER-2/neu 단백의 과발현은 생존율에 영향을 미치는 예후인자로서의 의미는 없었다. 결론: 상피성 난소암에서의 HER-2/neu 단백의 과발현은 잔류종양과의 연관성 및 재발과의 연관성이 있었으나 생존율에 영향을 미치는 예후인자로서의 의미는 없었다. 그러나, 임상적으로 적용하기 위해서는 더 많은 수의 환자를 대상으로 다변량 분석을 통한 각각의 예후인자와의 상관관계에 대한 연구가 필요할 것으로 생각된다. Objective: To evaluate the significance of the expression of HER-2/neu oncoprotein as a prognostic factor, we retrospectively examined its overexpression rates in epithelial ovarian cancer and their relationships with prognostic factors. Methods: Immunohistochemistry for Her-2/neu oncoprotein was performed on formalin-fixed, paraffin-embedded tissues from 45 epithelial ovarian cancer operated between 1999 and 2002. We analyzed relationships between the overexpression of HER-2/neu oncoprotein and prognostic factors including age, histologic type, surgical stage, residual tumor ≥2㎝, and recurrence. Results: The rate of overexpression of HER-2/neu oncoprotein in epithelial ovarian cancer was 31.1% (14/47). The overexpression of HER-2/neu oncoprotein showed associations with residual tumor ≥2㎝ (p=0.049) and recurrence (p=0.029) in univariate analysis. But, there were no associations between the overexpression of HER-2/neu oncoprotein and overall survival. Conclusion: The overexpression of HER-2/neu oncoprotein was associated with residual tumor and recurrence in univariate analysis, but appeared to have no prognostic significance for overall survival of epithelial ovarian cancer. Further and larger prospective studies using multivariate analysis are necessary to establish the clinical applicability of these observations.

CAD/CAM시스템을 이용한 상향식 가공에 의한 고효율가공에 관한 연구

정대훈(Dae Hoon Jeong),한규택(Kyu-Taek Han) 한국기계가공학회 2019 한국기계가공학회지 Vol.18 No.11

In this research, the effect of roughing on tool load through bottom-up machining is investigated through actual machining. Generally, through the use of high-speed machining technology, machining methods, such as general roughing, operate by deepening the cutting depth for as long as the tool is able to withstand it, giving a slower feed rate, less cutting depth, and faster feed. However, when the cutting depth is deep, there is a problem in that the stepped shape of the cutting area is increased (e.g., by the shaking of the tool or the chipping load). However, if the cutting is performed less, the cutting time becomes relatively long. To compensate for these drawbacks and extend the service life of the tool, economic efficiency needs to be secured.

Clinical significance of HPV 16 and 18 DNA in serum of patients with cervical cancer

정대훈 ( Dae Hoon Jeong ),( Joo Ran Kim ),( Dae Shim Lee ),( Young Mi Park ),( Su Jeon Jeong ),( Young Nam Kim ),( Chul Hoi Jeong ),( Kyung Bok Lee ),( Moon Su Sung ),( Ki Tae Kim ) 대한산부인과학회 2007 대한산부인과학회 학술대회 Vol.93 No.-

Treatment of metronidazole-resistant trichomonas vaginalis with tinidazole and zinc sulfate: a case report invasive cervical cancer

정대훈 ( Dae Hoon Jeong ),( Kyung Bok Lee ),( Young Mi Kang ),( Su Jeon Jeong ),( Young Nam Kim ),( Chul Hoi Jeong ),( Moon Su Sung ),( Ki Tae Kim ) 대한산부인과학회 2006 대한산부인과학회 학술대회 Vol.92 No.-

산전진단된 천미골기형종 2례

정대훈 ( Dae Hoon Jeong ),김정수 ( Jeong Soo Kim ),김영남 ( Young Nam Kim ),김우경 ( Woo Gyeong Kim ),성문수 ( Moon Su Sung ),김현찬 ( Hyun Chan Kim ) 대한주산의학회 2000 Perinatology Vol.11 No.3

1950년대 말~1960년대 초 전력 3사의 통합 논의

정대훈(Jeong Dae-hoon) 한국역사연구회 2017 역사와 현실 Vol.- No.105

At the end of the 1950s, as the U.S. policy for Korean aid began to shift and a crisis situation started to form due to over-production, the demand on management rationalization of national enterprises started to gain strength. This notion diverged in two directions: one aimed for keeping the ‘national’ aspect of the enterprises intact, while upgrading management to a more rationalized level, while the other suggested that the ownership as well as management of national enterprises should both be privatized, so that their ability to respond to market dynamics could be enhanced. Both arguments opted for bettering national enterprises’ management and operations, but there was a considerable difference between those two opinions, as they viewed the relationship between the state and market very differently. Discussions and debates over the issue of the Electric companies’ management rationalization also saw these two suggestions fighting with each other. And in this case the debate reflected(the difference between) the position of the Korean government, which was hoping to expand its own control over this important area of business, and the position of the U.S. authorities, which hoped to reinforce free trade principles. Eventually, the Korean government’s effort to call for the electric businesses’ public service reinforced paid off. At the time the Korean market was still to achieve a sufficient level of large-scale capital development, and the U.S. government came to realize that management rationalization was so urgent that the method of merging would be faster and more acceptable than an overall privatization process. This was, however, only a temporary agreement, and differences of opinions were still there. It is an interesting fact that all Korean regimes involved maintained or even reinforced the principle to have the three electric companies remain merged. In the subsequent periods, electric business played an important role in the overall economic development plans, and we can say that the decision made in the above-mentioned period was indeed a precursor to a state-led economic development process.

최신임상강좌 : 전암 병변을 가진 부인과 환자의 처치

정대훈 ( Dae Hoon Jeong ),이경복 ( Kyung Bok Lee ),김기태 ( Ki Tae Kim ) 대한산부인과학회 2010 Obstetrics & Gynecology Science Vol.53 No.4

부인암 중 자궁경부암은 예방이 가능한 암으로 알려져 있는데, 전암 병변에서 장기간에 걸쳐 서서히 침윤성 암으로 진행하게 되므로 선별검사를 통한 조기 진단 및 치료가 효과적이기 때문이다. 전암 병변을 제대로 치료하지 못하면 침윤암의 위험을 증가시키고, 반대로 불필요할 정도로 과도하게 치료하면 합병증을 증가시킬 수 있기 때문에, 전암 병변을 적절하게 치료하는 것이 중요하다. 환자 개개인별로 치료방법을 선택할 때에는 환자의 나이, 출산경력, 나중에 아이를 갖고자 하는 열망, 선호도, 이전 세포검사 결과와 치료병력, 추적검사 중에 문제가 있었는지 여부, 수술자의 경험, 변형층 (transformation zone)이 보이지 않는 경우 등과 같은 사항을 고려한다. Cervical cancer of gynecologic cancer is considered a preventable disease because it has a long preventive state, cervical cytology screening programs are currently available, and treatment of precancerous lesions is effective. Proper management of precancerous disease is important because improper management of precancerous disease can increase risk of invasive cancer on the one hand and can result in complications from overtreatment on the other. The decision as to which therapeutic option to use in an individual patient depends on considerations such as patient age, parity, desire for future childbearing, preferences, prior cytology and treatment history, and history of default from follow-up, operator experience, and nonvisualization of the transformation zone.

Costimulatory B7-H1 expression in cervical cancer patients(초)

정대훈 ( Dae Hoon Jeong ),( Dae Shim Lee ),( Mi Seon Kang ),( Hye Kyoung Yoon ),( Jung Mi Byun ),( Young Mi Park ),( Young Nam Kim ),( Chul Hoi Jeong ),( Kyung Bok Lee ),( Moon Su Sung ),( Ki Tae Kim ) 대한산부인과학회 2009 대한산부인과학회 학술대회 Vol.95 No.-