전자빔증착법을 통한 SiO_x 박막의 액정 배향 효과

강형구,한진우,강수희,김종환,김영환,황정연,서대식,Kang, Hyung-ku,Han, Jin-Woo,Kang, Soo-Hee,Kim, Jong-Hwan,Kim, Young-Hwan,Hwang, Jeoung-Yeon,Seo, Dae-Shik 한국전기전자재료학회 2005 전기전자재료학회논문지 Vol.18 No.11

By using $45^{\circ}$ obliqued evaporation method with electron beam system, uniformly vertical liquid crystal (LC) alignment was achieved. And a high pretilt angles of about $2.5^{\circ}$ were measured. Also, it was verified that there are no variations of pretilt angle as a function of $SiO_x$ thin film thickness 20 nm and 50 nm. A good LC alignment states were observed at annealing temperature of $250^{\circ}C$. Consequently, the high pretilt angle and the good thermal stability of LC alignment by $45^{\circ}$ obliqued electron beam evaporation method on the $SiO_x$ thin film can be achieved.

한국 전통기물을 이용한 Found Objects 개념의 가구디자인 제안

강형구,Kang, Hyung-Goo 한국가구학회 2005 한국가구학회지 Vol.16 No.2

There are several way to classify the furniture. The furniture can be classified into use, style, and function, but if the furniture is classified into the way of production, it can be the industrial furniture and the studio furniture. Especially, technology and function of the furniture are important elements in industrial furniture. However, it could be considered artists' character and concept as more important elements in the studio furniture. The studio furniture had come out one of the historical movement in American furniture field after the World War II. This case to apply found objects began to increase after the 1970s. Using objects In furniture design field had built up sprightly after end of 1950s. This expression could be the statement of new expression that essential properties of matter in objects is removed. I try to suggest original and interesting furniture design to apply found objects in this thesis. Especially, I use the Korean traditional objects for the furniture and try to make their essential function to be changed. Also, I focus on furniture design to have formative element in their shapes.

MBTI 성격유형에 따른 죽음 인지에 관한 탐색 연구

강형구,윤성민,Kang, Hyung-Goo,Yoon, Seong-Min 한국호스피스완화의료학회 2015 한국호스피스.완화의료학회지 Vol.18 No.2

목적: 성격유형에 따라 죽음을 받아들이는 태도가 다름을 알아보고 이를 통해 차별화된 호스피스 프로그램의 필요성을 강조하고자 본 연구를 수행하였다. 방법: 성격유형은 한국판 MBTI 성격유형검사 Form G를 사용하였고, 죽음에 대한 태도를 평가하기 위해 5점 척도를 이용한 26개 문항의 설문지 조사를 통해 자료를 모았다. 결과: 조사 대상자 100명 중에서 ESFP 성격유형이 제일 많았고(20%), 성격유형에 따른 죽음에 대한 준비과정이 의미있게 차이가 있었다. 4가지 성격유형 선호경향 지표에 따른 죽음에 대한 태도는 외향형(E), 사고형(T), 판단형(J) 경향이 높을수록 적극적이었고, SN지표에 따른 차이는 보이지 않았다. 결론: 성격유형에 따라 죽음인지에 대한 태도가 의미 있게 차이가 있었다. 따라서, 성격유형에 따른 호스피스 프로그램의 다양화가 요구된다. Purpose: The aim of this study was to investigate attitudes toward death according to personality types and to suggest the need to develop related hospice programs. Methods: Personality types were identified by the Korean version of the Myers-Briggs Type Indicator (MBTI) Form G. A questionnaire with 26 five-point Likert items was used to survey participants' attitudes toward death. Results: The ESFP personality type was most common (20%) among available 100 participants. Significant differences were observed in the attitudes towards death preparation according to personality type s. Participants with personality preference types E, T and J showed positive attitudes (P<0.05) toward death, but no significant differences were shown based on the SN index. Conclusion: The attitudes toward death differed by personality types. Therefore, this study points to the need to develop diverse hospice programs based on the personality types.

MBS(주택저당증권)시장 활성화 영향요인에 관한 실증연구

강형구(Kang Hyung-Goo) 한국주거환경학회 2006 주거환경(한국주거환경학회논문집) Vol.4 No.1

  The purpose of our research was to study the disposition of the current state of operations of mortgage backed securities. Specifically we looked at the residential lending market. the MBS market. and financial institution operations through aspects of the legal system to accomplish our central goal of developing market stimulation methods. Our subjects included 307 finance practitioners in the Seoul and Gyeonggi Province area. The subjects were asked to participate in an opinion survey in the form of a questionnaire and empirical analysis was performed of the results. The results of our study are as follows.<BR>  First. there appeared to be a positive correlation between the housing secured loan market and the legal-system. Thus, suggesting the need for institutional support for the revitalization of the market and in order for active market penetration by the government. Thus. to overcome the above mentioned obstacle. there needs to be an enlargement in the dimension of Loans for Housing supply, as we complement the current system of mortgage of Housing in the majority of housing funds procured from the retail savings market. The government can stabilize housing policies by expansion of the total dimension of housing loans and financial institutions can generate income through various remortgage programs in their home product development as a premise for getting out of housing mortgage debenture.<BR>  Second, of the three market stimulating factors, when looked at from the point of view of the MBS market and housing secured loans. among financial institutions, banks and brokerage firms showed positive results while insurance companies showed somewhat negative results. This may be attributed to the low yield and high risk of insurance companies.<BR>  Third. results show that legal and institutional factors did not have a significant influence while housing secured loan market factors did show to have a significant influence in housing finance. Therefore, various housing secured loan markets should be developed in order to maximize the revitalization of the MBS market.

교량구조물의 설계 및 유지관리단계 신뢰성기반 LCC분석 모델

강형구 ( Kang Hyung-goo ),손용우 ( Sohn Yong-woo ),이증빈 ( Lee Cheung-bin ),최미라 ( Choi Mi-ra ),박주원 ( Park Ju-won ) 한국구조물진단유지관리공학회 2005 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.9 No.2

Today, the economic evaluation is being widely used for the deterministic Life Cycle Cost (LCC) analysis method of bridge structures. Since it cannot incorporate the uncertainties, several studies have been carried out in oder to get over the incompleteness of the conventional LCC analysis method. A reliability-based life cycle cost analysis method, which can evaluate LCC analysis of existing bridge structures, has been recently proposed. Effectively maintaining bridge structures require predicting their physical and economical remaining lite using condition assessment and regression analysis using cost function viewpoint. Likewise, maintenance interventions and times models based on the reliability solution concept should be developed. Illustrative design examples of an actual reinforced concrete bridges and prestress concrete I type bridges were discussed to demonstrate the LCC effectiveness of the maintenance interventions of bridge structures, Based on the results of the numerical investigation, the LCC-effective maintenance strategy of bridge structures based on the proposed reliability-based LCC analysis models was found to lead to a more rational, economical, and safer maintenance strategy compared with the maintaining cost-optimum maintenance interventions and conventional code-based design.

비소세포폐암 수술 후 세포분화도가 재발에 영향을 미친다

강형구 ( Hyung Koo Kang ),조성근 ( Sung Gun Cho ),이혜민 ( Hye Min Lee ),박성운 ( Sung Woon Park ),이병욱 ( Byung Ook Lee ),이재희 ( Jae Hee Lee ),김보민 ( Bo Min Kim ),박인원 ( In Won Park ) 대한결핵 및 호흡기학회 2010 Tuberculosis and Respiratory Diseases Vol.68 No.1

Background: Lung cancer is the most common cause of cancer mortality in Korea. The TNM stage at presentation in patients with non-small cell lung cancer (NSCLC) has the greatest impact on prognosis. Patients who undergo a complete resection for NSCLC are likely to develop recurrent and/or metastatic disease. There are several factors influencing the development of recurrence. We explored risk factors of recurrence in patients with stages I and II NSCLC, who had undergone curative resection. Methods: We reviewed patients who had complete surgical resection as definitive treatment for stage I or II. Patients followed up for more than 36 months. We evaluated several factors which might have relationship with recurrence, such as patient`s demographic factors, TNM staging, pathologic finding, tumor markers and surgical technique. Results: A total of 75 patients were enrolled for analysis, of whom 58 were men and 17 were women with mean age of 61 (range, 37 to 76) years. The average size of tumors was 3.9 cm (0.7 to 10 cm). There were 64 patients with stage I NSCLC and 11 with stage II NSCLC. Among 64 patients with stage I NSCLC, 35 patients showed recurrences whereas 8 patients have recurred in stage II NSCLC. Grade of differentiation of tumor was closely related to the recurrence. Seventy-five percent of patients who had poor tumor differentiation experienced a recurrence. In contrast, 3 patients of twelve had recurrences, who revealed differentiation in their tissue (p<0.05). Conclusion: Tumor differentiation could be a predictive factor for tumor recurrence in patients who have undergone curative resection for stage I or II NSCLC.

일부 지역사회 노인들의 구강보건행동에 따른 구강건강상태

강형구(Hyeong-Ku Kang),윤현숙(Hyun-Suk Yoon),조영채(Young-Chae Cho) 한국농촌의학 지역보건학회 2005 농촌의학·지역보건 Vol.30 No.3

한국 동해 남부 연안 일광만의 요각류 Acartia steueri 의 알 생산력

강형구(Hyung Ku Kang),강용주(Yong Joo Kang) 한국수산과학회 1998 한국수산과학회지 Vol.31 No.2

Egg production of Acartia steueri was estimated in Ilkwang Bay, located in the southeastern coast of Korea. The equation, combing fecundity, temperature and chlorophyll a, obtained under the laboratory experiments, was applied to the in situ temperature and chlorophyll a for the estimation of field egg production. Mean egg size was 80.52㎛. Prosome length of adult females was not correlated with egg size. Egg production of field population ranged from 0.32 to 63.32㎍C m^(-3) d^(-1) with a mean of 13.33㎍m^(-3) d^(-1), which were equivalent to 7.1-1407.1 eggs m ^(-3) d^(-1) and 296.1 eggs m^(-3) d^(-1) with a mean of 13.33 ㎍C m^(-3) d^(-1), respectively. Fecundity of adult females ranged from 5.4 to 12.5 eggs female^(-1) d^(-1) with a mean of 8eggs female^(-1) d^(-1). Specific egg production rates ranged from 0.028 to 0.117 d^(-1)with a mean of 0.064 d^(-1). Considering the egg production(% female body carbon) as a function of temperature and chlorophyll a concentration, our results showed rather low fecundity, which might be underestimated. Probable cannibalism of egg by the adults were thought to be part of the reason for this low estimated fecundity.

실험실에서 요각류 Acartia steueri 의 성장과 발생

강형구(Hyung Ku Kang),강용주(Yong Joo Kang) 한국수산과학회 1998 한국수산과학회지 Vol.31 No.6

Development and growth of Acartia steueri from Ilkwang Bay, southeastern coast of Korea, were determined under various temperatures and food condition (Isochrysis galbana and Dunaliella salina) in the laboratory. Relationship between egg hatching time (D_E, dsy) and temperature (T, ℃) was D_E=744 (T+3.5)^(-1.97). Mean hatching success was 88.4% in temperature range of 8.4∼26.2℃. This suggests that A. steueri may be adapted to the temperature ranges in temperate regions. Post-embryonic development pattern was equiproportional rather than isochronal, with longer stage duration of copepodites than that of the nauplii. Stage duration of NI was the shortest of all developmental stages, while the duration of NII was the longest in duration of the other nauplii. Male was morphotogically distinguished from female in CIV stage, and male was developed faster than female. Median development time at a given temperature was calculated from the Be˘lehra´dek equation by proper multiplication of proportional coastant for embryonic develoment. Body carbon weight at 19.1℃ was increased exponentially with time. Mean spedfic growth rate of nauplii (0.200 d^(-1)), except for NI stage, was not significantly different from that of copepodites (0.190 d^(-1)), with the lowest rate in NVI stage (0.107 d^(-1)), probably due to eaergy consumption for metamorphosis rather than somatic growth. The results suggest that although the development pattern determined in this study was nat identical with Uye`s result for A. steueri (e.g. Uye, 1980b), median development time may be applicable to calculate the stage duration of A. steueri in this study area.

DC 시스템의 조류해석 모델링과 위치 최적화의 문제

강형구(Hyeong-Gu Kang),김인수(Insu Kim) 대한전기학회 2022 대한전기학회 학술대회 논문집 Vol.2022 No.10