http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 이화영 (검색결과 1,057 건)
- 무료
- 기관 내 무료
- 유료
-
-
-
-
-
이화영,Lee, Hwa-Yeong 한국과학기술단체총연합회 1999 과학과 기술 Vol.32 No.10
1956년 서울대 공과대학에 입학한 나는 대학졸업 후 잠시 취직을 하였다가 대학원에 입학하여 석사과정을 마치고 1967년 박사과정에 입학 서울대 공과대학 신제박사 1호를 기록했다. 그 후 서울대 화공과에서는 1백38명의 박사를 배출하여 그들은 외국에서 학위를 받은 사람들과 어깨를 같이하며 대학고 연구소에서 일하고 있다. 그런데 최근 대학교수와 연구원들을 평가함에 있어 그 잣대를 SCI등재 논문수에만 치우치는 것 같아 안타깝다. 국내 학술지에 게재된 논문도 정당한 평가를 받아야 하지 않겠는가.
-
-
Fe/Ni 합금전착에 의한 다공성 그물군조 방열재료의 제조 연구
이화영,이관희,정원용,Lee, Hwa-Young,Lee, Kwan-Hyi,Jeung, Won-Young 한국전기화학회 2002 한국전기화학회지 Vol.5 No.3
An attempt was made for the application of porous reticular metal to a heat dissipation material in semiconductor process. For this aim, the electrodeposition of Fe/Ni alloy on the porous reticular Cu has been performed to minimize the thermal expansion mismatch between Cu skeleton and electronic chip. Preliminary tests for the electrodeposition of Fe/Ni alloy layer were conducted by using standard Hull Cell to examine the effect of current density on the composition of alloy layer. It seemed that mass transfer affected significantly the composition of Fe/Ni layer due to anomalous codeposition in the electrodeposition of Fe/Ni alloy. A paddle type stirring bath, which was employed to control the mass transfer of electrolyte in the work, was found to allow the electrodeposition Fe/Ni with a precise composition. result showed that the thermal expansion of Fe/Ni alloy layer was much lower than that of pure copper. From the tests of heat dissipation by using the apparatus designed in the work the heat dissipation material fabricated in the work showed the excellent heat dissipation capacity, namely, more than two times as compared to that of pure copper plate.
-
Effects of Tianeptine on Adult Rats Following Prenatal Stress
이화영,Hyung-Ki Kim,Jun-Tack Kwon,Young-Ock Kim,Jonghoon Seo,Sanghyun Lee,Ik-Hyun Cho,Hak-Jae Kim 대한정신약물학회 2018 CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE Vol.16 No.2
Objective: Exposing a pregnant female to stress during the critical period of embryonic fetal brain development increases the risk of psychiatric disorders in the offspring. The objective of this study was to investigate the effect of antidepressant tianeptine on prenatally stressed (PNS) rats. Methods: In this study, a repeated variable stress paradigm was applied to pregnant rats during the last week of gestation. To investigate the effects of antidepressant tianeptine on PNS rats, behavioral and protein expression analyses were performed. Forced swim test, open field test, and social interaction test were performed to determine changes in PNS rats compared to non-stressed offspring. Haloperidol was used as a positive control as an antipsychotic drug based on previous studies. Results: Behavioral changes were restored after treatment with tianeptine or haloperidol. Western blot and immunohistochemical analyses of the prefrontal cortex revealed downregulation of several neurodevelopmental proteins in PNS rats. After treatment with tianeptine or haloperidol, their expression levels were increased. Conclusion: Downregulation of several proteins in PNS rats might have caused subsequent behavioral changes in PNS rats. After tianeptine or haloperidol treatment, behavioral changes in PNS rats were restored. Therefore, tianeptine might decrease incidence of prenatal stress related-psychiatric disorders such as depression and schizophrenia.
-
함수의 그래프 표현 및 그래프 해석 지도 가능성 탐색 - 초등학교 5학년을 중심으로 -
이화영,류현아,장경윤 대한수학교육학회 2009 학교수학 Vol.11 No.1
This research was designed to investigate the possibility to teach function concept and graph representation of functions in explicit manner toward at elementary level. Eight class-hours instruction was given to four Grade 5(age 11) students, and dynamic geometry software GSP was partially used in the class. Results indicate that the students could conceptualize the function relation, interpret linear function graphs, recognize the meaning of their slopes, and discuss the relationships among linear graphs and real life situation. Results also indicate that GSP helped students to recognize the relation between dots and the linear graph clearly and that GSP-line graph did decisive role for children to understand the meaning of graph representation of function. 본 연구는 초등학교 학생들에게 함수의 그래프 표현 및 해석의 지도가능성을 탐색하기 위하여 설계되었다. 이를 위하여 부분적으로 역동적인 기하 소프트웨어를 이용하는 점진적인 함수 그래프 지도 방법을 고안하여, 초등학교 5학년생 4명을 대상으로 8차시의 수업을 실행하였다. 연구 결과, 아동들은 함수 관계에 대한 개념화, 1차 함수 그래프의 해석, 1차 함수 그래프 기울기의 의미를 인식하고, 기울기에 대한 논의와 실생활과의 관련성을 파악하는 것으로 나타났다. 함으로써 함수의 그래프 표현 및 해석의 지도가 가능함을 알 수 있었다.--삭제) 또한, 아동들은 GSP-선그래프를 통하여 그래프에서의 점과 선의 관계를 시각적으로 명확히 인식하였으며, 함수관계를 그래프로 정확하게 표현하는 데에 있어서 결정적인 역할을 했음을 알 수 있었다.
-
이화영,김양택,구교진,현창택,Lee Hwa Young,Kim Yang Taek,Koo Kyo Jin,Hyun Chang Taek 한국건설관리학회 2003 건설관리 : 한국건설관리학회 학회지 Vol.4 No.1
Nowadays, as construction projects become bigger, the probability of construction accidents is higher than any other day. When construction accidents break out, we may suffer from the loss of life and property. For preventing these damages, there is lawed that some public constructions have to insure Contractor's all risks insurance policy (CAR), However, CAR is used to preventing the insured from the loss of construction accidents, it is debated that the premium rate of CAR is not fair to the insured (contractors) The objects of this thesis are as follows Firstly, the fairness of the premium rate of CAR is reviewed, and then the amount of risk of the insured evaluates and applies to the premium rate. Secondly, the development direction of components for evaluating the amount of risk of the insured is presented in the research. Lastly, how to use the team which assesses the risk of the insured and construction works is proposed for deciding reasonably the premium rate of CAR
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
