형상기억효과를 가진 투과형 광탄성 실험용 모델재료 개발에 관한 연구

이효재,황재석,Lee, Hyo-Jae,Hwang, Jae-Seok,Shimamoto, Akira 대한기계학회 1998 大韓機械學會論文集A Vol.22 No.3

The photoelastic model material with shape memory effect and the molding processes for the material are developed in this research. The matrix and fiber of the photoelastic model material developed in this research are epoxy resin (Araldite to hardner 10 to 3 (weight ratio)) and wire of $Ti_50-Ni_50$ shape memory alloy, respectively. It is called Ti50-Ni50 Shape Memory Alloy Fiber Epoxy Composite $(Ti_50-Ni_50SMA-FEC).$ Ti50-Ni50 SMA-FEC is satisfied with the requirements of the photoelastic model material and can be used as a photoelastic model material. The maximum recovering strain of $Ti_50-Ni_50$SMA-FEC is occurred at $80^{\circ}C$ in any prestrain of $Ti_50-Ni_50$ shape memory alloy fiber and in any fiber volume ratio. Recovering strain(force) is increased with the increment of the prestrain and the fiber volume ratio. The best prestrain of $Ti_50-Ni_50$SMA-FEC is 5% for the recovering force among 1%, 3%, 5%.

투과형 광탄성 실험법에 의한 지능성 FRP의 파괴지연 효과에 관한 연구

이효재,황재석,Lee, Hyo-Jae,Hwang, Jae-Seok 대한기계학회 1999 大韓機械學會論文集A Vol.23 No.11

The most effective material in the shape memory alloy(SMA) is the TiNi alloy, because its shape recovery characteristics are very excellent. We molded the composite material with shape memory function. The fiber of it is $Ti_{50}-Ni_{50}$ shape memory alloy and matrix of it is epoxy resin(Araldite B41, Hardner HT903. Ciba Geigy), its adhesive and optical sensitivity are very excellent. It was assured that the composite material could be used as model material of photoelastic experiment for intelligent materials or structures. In this research, the composite material with shape memory function is used as model material of photoelastic experiment. Photoelastic experimental hybrid method is developed in this research, it is assured that it is useful on the obtaining stress intensity factor and the separation of stress components from only isochromatic data. The measuring method of stress intensity factor of intelligent material by photoelastic experiment is introduced. In the mode I state, we can know that stress intensity factors are decreased more than 50% of stress intensity factor of room temperature when temperature of fiber is greater than 4$0^{\circ}C$, prestrain greater than 5% and fiber volume ratio greater than 0.42% and that stress intensity factors are decreased by 100% when fiber volume ratio is greater than 0.84%, prestrain greater than 5% and temperature greater than 60 $^{\circ}C$.

Ti_{50}-Ni_{50} 형상기억합금 복합체의 계면 접학 전단강도 향상에 관한 연구

이효재,황재석,Lee, Hyo-Jae,Hwang, Jae-Seok 대한기계학회 2000 大韓機械學會論文集A Vol.24 No.10

In this paper, single fiber pull-out test is used to measure the interfacial bonding shear strength of $Ti_{50}-Ni_{50}$ shape memory alloy composite with temperature. Fiber and matrix of $Ti_{50}-Ni_{50}$ shape memory alloy composite are respectively $Ti_{50}-Ni_{50}$ shape memory alloy and epoxy resin. To strengthen the interfacial bonding shear stress, various surface treatments are used. They are the hand-sanded surface treatment, the acid etched surface treatment and the silane coupled surface treatment etc.. The interfacial bonding shear strength of surface treated shape memory alloy fiber is greater than that of surface untreated shape memory alloy fiber by from 10% to 16%. It is assured that the hand-sanded surface treatment and the acid etched surface treatment are the best way to strengthen the interfacial bonding shear strength of $Ti_{50}-Ni_{50}$ shape memory composite. The best treatment condition of surface is 10% HNO$_3$ solution in the etching method to strengthen the interfacial bonding shear strength of $Ti_{50}-Ni_{50}$ shape memory alloy composite.

한방 종양면역치료를 통한 전이재발 억제 방법론 연구

이효재,이연월,유화승,조종관,Lee, Hyo-Jae,Lee, Yeon-Weol,Yoo, Hwa-Seung,Cho, Chong-Kwan 대한암한의학회 2010 大韓癌韓醫學會誌 Vol.15 No.1

Background: The greatest threats to the lives of cancer patients consist of both complications due to metastasis and the recurrence of original cancer. However, the existing forms of chemotherapy do not prevent these adverse events adequately because they suppress the patients' immune systems. A new methodology is required. Aim: To provide further validation for cancer immunotherapy (involving the use of traditional oriental herbal medicine). Method: Related articles, in both Korean and English were reviewed. Results: Cancer immunotherapy involving the use of traditional oriental herbal medicine can create inhospitable conditions for cancer cells and strengthen patients' immunological functioning. These effects are a demonstration of the principles of "strengthening healthy qi (扶正)" and "eliminating pathogens (祛邪)". As a result, immunotherapy protects against metastasis and original cancer recurrence by preventing the growth of cancer cells. This is very similar to the concept of a cancer dormancy therapy. Conclusion: It is strongly urged by the authors that more advanced studies be carried out on this promising therapy in the future in order to improve patients' quality of life and increase their survival time.

한국 노동자계급 가족의 생활실태

이효재(Lee Hyo-Jae),지은희(Ji Eunhee) 한국사회학회 1989 韓國社會學 Vol.22 No.W

부산국제영화제를 통한 장소마케팅 전략 탐색

이효재(Hyo Jae Lee) 한국정부학회 2008 한국행정논집 Vol.20 No.3

본 연구의 목적은 장소마케팅과 국제영화제의 관계를 명확히 하고 장소마케팅의 성공요인을 규명하여 이를 정책적이고 전략적으로 활용하기 위한 방안을 제시하는 것이다. 이를 위해 장소마케팅에 관한 선행연구를 분석하여 대표적인 성공요인을 도출하고 사례분석을 통해 장소마케팅 성공요인들이 어떻게 작용하였는지를 탐색하였다. 구체적으로 선행연구에서 도출된 성공요인에 관한 분석틀을 바탕으로 연구대상인 부산국제영화제가 하나의 문화상품으로서 어떻게 장소마케팅에 결합되는지를 중심으로 논의하였다. 그리고 장소마케팅 성공요인의 관점에서 부산국제영화제가 어떻게 작용하였고 어떠한 요인이 가장 영향을 미쳤는지를 분석하였다. 이러한 논의로부터 장소마케팅이 지역자체를 문화상품으로 조성하는 역할을 하고 지역의 경제적인 목표뿐만 아니라 사회·문화적 목표들까지 포괄하는 주체적인 지역개발 전략으로 활용되는데 도움을 줄 수 있을 것이다. This study aims to find out the success factors of the place marketing strategy, and to suggests effective place marketing models. For this purpose, Based on the tool of analysis about the success factors that has already been revealed from the former research, this thesis mainly discusses about how PIFF(Pusan International Film Festival) was combined with the place marketing as a cultural product. And then, this thesis suggests effective place marketing strategy models in the future under analyzing the most important success factor of the place marketing and how it would be applied to the regional development. Considering these things above, place marketing is expected to bring out customization of locality, independent and democratic developments of areas, including economic, social and cultural achievements.

스위칭 손실을 최소화한 부스트 방식의 역률 개선 회로

李效在(Hyo-Jae Lee),崔鉉七(Hyun-Chil Choi) 전력전자학회 2011 전력전자학회 논문지 Vol.16 No.2

현대 기독교철학의 동향 깔뱅의 돈 이해에 대한 비판적 고찰 -짐멜의 문화이론 관점에서-

이효재 ( Hyo Jae Lee ) 한국기독교철학회 2011 기독교철학 Vol.13 No.-

Reformer Jean Calvin, in the middle of a changing period from the medieval to the modern times, conditionally permitted usury (interest) which was strictly prevented by the medieval church through his own new biblical interpretation. His theological argument about usury was based upon his revolutionary understanding of money. The medieval church oppressed making profit by money and controlled the objective culture of money not to destroy the religious subjective culture which was built by the church for a long time. Medieval church, however, could not resist any more the apparent phenomenon of the development of capitalism. Money was expanding the objective culture created by its inner logic at that time. Calvin adopted this phenomenon rather than resisted and used usury system to solve the rapidly increasing problem of poverty of the city of Geneva. His idea was to permit receiving usury for capitalists to induce their money into the new industry and business of the poor. His idea was successful. Nevertheless, Calvin did not permit charging usury on the lending for the poor. From the perspective of Georg Simmel`s theory of culture, Calvin`s theological and pastoral stance was to balance between the objective and the subjective culture. This balance was broken after Calvin. The objective culture of money slowly took over the subjective culture for which the medieval church tried to keep for hundreds years through preaching and teaching at the church. Max Weber found this tragic cultural phenomenon, the victory of the objective culture of money, from the later Puritans. Though not intended, Calvin opened the way for the objective culture of money to prevail the present economic world which suffers from consumerism.

칼빈의 율법의 제3용법과 이자금지법 해석 ; 구약 율법의 적용 사례 연구

이효재 ( Hyo Jae Lee ) 한국개혁신학회 2013 한국개혁신학 Vol.41 No.-

칼빈은 중세 스콜라주의자들이나 루터와 같은 이전 신학자들과 달리 상업적인 이자를 허용한 첫 번째 기독교 신학자로서 서구 사회에 적잖은 변화를 가져왔다. 최근 연구들은 그가 왜 이자를 허용했는지를 분석하고 있는데, 필자는 구약 율법에 대한 칼빈 자신의 이해에 근거한 성경 해석의 결과였다는 점을 새롭게 제시한다. 칼빈은 자신의 ‘율법의 제3용법’ 개념으로 이자금지법을 해석하면서 율법의 궁극적 목표인 사랑을 실천할 수 있다면 이자를 금지한 율법 규정을 문자적으로 지키지 않아도 된다고 주장하며 문자적 준수보다 율법에 담긴 하나님의 뜻을 성도들의 일상에 적용하는 것이 율법의 진정한 정신이라고 강조했다. 칼빈은 자신이 살던 16세기 제네바에서 이자를 주고받는 경제 활동을 통해 산업을 발전시켜 긴박한 가난 문제를 해결할 수 있다면, 이것이 오히려 이자금지법에 담긴 하나님의 의도를 더 정확하게 구현하는 것이라고 보았다. 하나님은 이 법을 통해 가난한 자를 보호하기 원했기 때문이다. 다만 그는 가난한 자들의 생계를 위한 대부에는 이자를 부과해서는 안 된다는 단서 조항을 붙였다. 이와 같은 칼빈의 율법 해석을 통해서 우리는 구약의 율법이 오늘 우리의 일상생활과 무관한 것이 아니라 여전히 하나님의 뜻을 전달하고 있음을 발견한다. 율법이 주어졌던 구약시대와 많이 달라진 오늘날에 율법을 적용하기 위해서는 율법의 본래 정신을 현실에 맞도록 창조적이고 탄력적으로 적용해야 함을 칼빈을 통해 배울 수 있다. This article aims to provide a new way to understand the theological foundation of John Calvin`s interpretation of the usury laws in the Mosaic Law. His interpretation of the usury laws was radically different from that of Scholastics and even other Reformers of his days. His challenge against the church tradition that read the usury laws literally provided a significant turning-point to the development of the capitalism of Western Europe. Scholars have researched to find the reason why he was different from others on this issue. Recent studies focused on the idea of equity as his ethical principle in his understanding of usury. Not satisfied with this result, I tried to find a deeper reason and found the more basic theological ground for his revolutionary idea on usury: his idea of the third use of the Law. This idea means that Mosaic laws, though given for the recognition of our sinfulness, can be used as a moral guide for believers. Calvin argues that the final goal of the Old Testament laws is to love God and neighbor. This idea made him believe that the usury laws could play a positive role in the life of believers. For Calvin, if usury could be used to practice the love of the poor in the 16th century context which was far different from that of the Mosaic Law, this usury should be permitted. Using this interpretive method, Calvin concludes that the usury laws do not mean unserved prohibition but the practice of love, especially for the poor. For this reason, Calvin permitted some kinds of usury practiced in marketplaces, because he experienced positive roles of usury that helped the poor to make profit and relieve from poverty. But he strictly prohibited usury charged to the lending for the life of the poor. The idea of the third use of the Law opened Calvin`s eyes to see the other aspect of usury that was condemned by the Roman Catholic church. This argument will help Calvin researchers to know a reason why Calvin interpreted the usury laws of the Old Testament in such a revolutionary way.

唐太宗期 西北遊牧君長의 宿衛와 對外遠征 從軍

李孝宰(Lee Hyo-jae) 역사학회 2010 역사학보 Vol.0 No.206

At the end of the Sui(隋) Dynasty, the Eastern Turks made an invasion upon the Hebei area. After the unification of the China, Tang captured Xieli Qaghan (詰利可汗) who stayed in the Yin-shan (陰山). Afterward, the leaders of Turks and Tiele(鐵勒) had conquered the Tang. After this event, They were designated as the Huang di-Ti?n Qaghan(皇帝-天可汗). Hereby Taizong became the Qaghan of nomadic tribes as well as the emperor of Han race(漢人). Nomadic leaders were appointed to the post of the Royal guards who commanded the B?i-cb'i(百騎) and the Fei-cb'i(飛騎) at the Xuan-w?-men(玄武門), and escorted the emperor. So, what made the emperor impose such a duty on them? First, I think, he wanted to check and prepare against the coup d'tat of Han's aristocrats. Second, he needed to take nomadic leaders to his arms and to show off his dignity to neighboring countries. Third, he attempted to make new military system by taking nomadic leader and General of Han race part in emperor's hunting and guarding. Taizong, as the huang di-ti?n Qaghan, needed to conquest neighboring countries for world supremacy. Nomadic leaders took part in the expedition to the Tuyuhun(吐谷渾) in 635. It was the first foreign expedition that the Han race army and nomadic tribes united together in the struggle against enemies. Thereafter, Tang had dispatched expedition forces who united Han race army and nomadic tribes. The allied forces of Han race and nomadic tribes had dispatched and subjected all of other nations.