금속분말사출성형법으로 제조된 WC-10Co계 초경합금 소결체의 탄소첨가량에 따른 특성변화

강상대,박동욱,권영삼,조권구,안인섭,Kang, Sang-Dae,Park, Dong-Wook,Kwon, Young-Sam,Cho, Kwon-Koo,Ahn, In-Shup 한국분말야금학회 2011 한국분말재료학회지 (KPMI) Vol.18 No.3

In order to investigate the microstructure and mechanical properties of WC-10 wt% Co insert tool alloy fabricated by PIM (Powder Injection Molding) process, the feedstock of WC-10 wt% and wax used as a kind of binder were mixed together by two blade mixer. After injection molding, the debinding process was carried out by two-steps. First, solvent extraction, in which the binder was eliminated by putting the specimen into normal hexane for 24 hrs at $60^{\circ}C$, and subsequently thermal debinding which was conducted at $260^{\circ}C$ and $480^{\circ}C$ for 6 hrs in the mixed gas of $H_2/N_2$, respectively. Meantime, in order to compensate the decarburization due to hydrogen, 1.2~1.8% of carbon was added to ensure the integrity of the phase. Finally, the specimens were sintered in vacuum under different temperatures, and the relative density of 99.8% and hardness of 2100 Hv can be achieved when sintered at $1380^{\circ}C$, even the TRS is lower than the conventional sintering process.

녹족부인 서사의 친자(親子) 탐색 모티프 연구

강상대 ( Kang Sang Dae ) 한국언어문화학회 2014 한국언어문화 Vol.0 No.55

미와 다마끼(三輪環)의 녹족부인 서사 연구

강상대(Kang, Sang-dae) 한국어문학회 2012 語文學 Vol.0 No.118

This thesis aims to .explore the narrative nature and aspects of the tale of Lady Nokjok by examining the narrative structure and characteristics of the Lady Nokjok’s story included in the Chosun of Legend written by the Japanese author, Miwa Tamaki, in 1919 under the title, Daesungsan. Tamaki’s version consists of three narrative pieces that originated from the tale of Lady Nokjok in Pyungyang and Anju in Pyungannamdo. Although it was published in Japanese during the Japanese occupation in Korea, Tamaki’s publication is an invaluable source in that the three pieces can be cross-examined in relation to narrative property and the way those stories were passed down. The story collectively embraces various features of Lady Nokjok tale from Pyungyang and Anju in the three pieces. As a folktale each piece presents the natural background and historical sites of the pertaining region. At the same time, however, the narrative structure and meaning of each piece vary significantly. The first story, Noksuam Dutasa, presents narrative elements that reveal the archetypic image shared by the people. In particular, Lady Nokjok is deified and her divinity is realized. The story also features a heroic epic illustrated by her nine sons. If they are the focus of the narrative, the story embodies a typical narrative pattern of heroic epics. The second story, Habjangchun, harks back to the tale of Habjangchun in which Lady Nokjok’s sons apologized for failing in fulfilling their filial duties with their hands put together. The concept of taboo and violation accentuates its mythical property. In particular it is interesting that beoseon, Korean traditional socks, is instrumental for taboo and violation. In Western and Asian legends, shoes were indicator of their owner’s identity. In this case beoseon is equivalent to shoes that cover the feet. Habjangchun focuses on the sons’ contemplation on their identity as hero through the narrative of taboo and violation surrounding beoseon. The last story, Yeoldusamchunbul, from Anju attains a strong tie to its origin and dwells on the numbers twelve and three thousand. In this story, Lady Nokjok has twelve sons and each lead three thousand soldiers. These numbers are also related to the name of the region (literally translated, twelve three thousand field) and compile a strong narrative. Additionally, Lady Nokjok’s divinity and her sons’ heroic nature are much deepened. After the period of Japanese occupation, the story of Lady Nokjok still prevails in both North and South Korea as folktale. To find the source of this narrative energy is significant in the “narrative value” that can be employed as cultural resource in the modern world. This thesis is expected to contribute to this finding.

대학교 소설창작 교육의 방법론

강상대 ( Sang Dae Kang ) 단국대학교 동양학연구원 2004 東洋學 Vol.35 No.-

남북한 분단 이후 ‘녹족부인’ 서사의 변이 양상 연구

강상대(Kang Sang-dae) 한국어문학회 2011 語文學 Vol.0 No.112

Fairy tales like myth, legend, and folk tale are essential cultural elements to recover homogeneity of North and South Korea. The character of fairy tales as a basic culture is shown in the realization of proto-type image of nation, which secures the identity as an ethnic community. Accordingly, it is of help to have a cultural sense of community between North and South with common proto-type image of the spirit of fairy tales inherited down to present by our nation. But, it must be pointed out that it seems impossible to find out the original form in the fairy tales of current north Korea when the ideological and institutional characteristics are considered. The fairy tales in North Korea are means for official communication to serve as a ‘weapon to enlighten laborers.’ If the way to keep ethnical identity as the Korean nation in this divided country, a narrative to restore the narrative proto-type through the process of confirmation of the variation by ruling ideology of North Korea is desirable. From this point, this study examines the structure and character of plot in the narrative of ‘Nokjokbuin? in Pyongyang-ji published in North Korea in 1957 after the permanent division of the two during the Korean war. “Nokjokbuin(A)” has a possibility of variation to the narrative deleting class discrimination image by making Nokjokbuin to be commoner and also to expose the feudal ruling class at the phrase in showing the separation of mother and son. The process of the separation of mother and son is progressed to remove heroic narrative character and mythical meaning in the existing story. And, “Nokjokbuin(B)” reduces the subjective status of Nokjokbuin and expresses Euljimundeok as its subjective status. It also intensifies historicity by accommodating the Euljimundeok story resulting in the expression of patriotic struggle. The contents of the plot are structured irregularly to express the subject. In particular, it is of importance as resources that the narrative of Nokjokbuin has been revised to link to Euljimundeok, an element to certify and evaluate as a representing narrative of ‘anti-invasion and patriotic struggle myth.? As such, the structure and character of “Nokjokbuin(A)” and “Nokjokbuin(B)” demonstrates that the fairy tales in North Korea have been planned and revised actively to cultivate a patriotic ideology. These resources confirm that the identity of initial stage in which diverse versions of Nokjokbuin tales were existed during the Japanese occupation and division of North and South. The tale of Pyongyang-ji demonstrates that even in the mid 1950s the system of fairy tales of North Korean type has already been operated. The fact that the infusion of ruling ideology to the fairy tales of North Korea in the such an early stage from the division of the country implies the seriousness of cultural separation between North and South.

금속분말사출성형법으로 제조 된 WC-10Co계 초경합금 시편의 소결분위기에 따른 특성변화

강상대(Kang Sang Dae),김진화(Kim Jin Hwa),하종근(Ha Jong Keun),권영삼(Kwon Young Sam),조권구(Cho Kwon Koo),안인섭(Ahn In Shup) 한국생산제조학회 2011 한국생산제조시스템학회 학술발표대회 논문집 Vol.2011 No.4

This study was investigated for microstructure and mechanical properties of WC-10wt%Co insert tool alloy fabricated by PIM process. The WC-10wt%Co feedstock mixed with wax binder was fabricated by two blade mixer. After WC-10wt%Co feedstocks were injection molded, debinding process was carried by two-steps methods with solvent extraction and thermal debinding. The binder was eliminated with normal hexane for 24hours at 60℃ by solvent extraction, and subsequently thermal debinding was examined at the temperature 260℃ and 480℃ for 6 hours in H2/N2 mixed gas atmosphere.

도시 정체성 구현을 위한 스토리텔링 적용 시론

강상대(Kang Sang-dae) 인문콘텐츠학회 2007 인문콘텐츠 Vol.0 No.10

문화산업 육성 전략에 있어 각 도시는 다른 도시와 차별되는 지향점을 지녀야 한다. 다양성을 본질로 하는 문화의 속성상 각 도시가 갖고 있는 문화자원의 성격과 내용에 따라 특성화 전략이 수립되어야 하는 것이다. 본 연구는 ‘미래 도시’를 추구하는 천안의 도시 정체성을 확보하는 하나의 지향점으로서 ‘문화기술도시’ 구현을 제시하였다. 그리고 문화기술도시 구현을 위한 구체적인 방안으로서 천안의 문화자원에 대한 스토리텔링 전략을 고찰하였다. 문화기술적 전략으로서의 스토리텔링은 문화산업 또는 문화콘텐츠산업의 핵심적 토대임과 아울러 미래 지향적인 문화창조 및 문화향유의 방식을 내포하고 있다. 천안의 문화적ㆍ산업적 여건을 고려할 때 문화요소와 기술요소를 결합하여 고부가가치가 창출되도록 하는 문화기술도시로의 육성은 천안시의 발전과 시민의 삶의 질 향상에 매우 중요한 정책인 것이다. In order to have a strategy to cultivate a cultural industry, each city should have a differentiated goal from the others. Due to a diversity lied in culture, specialized strategy setting is essential according to the characteristic and contents of cultural resource that each city has. Therefore, this research was aimed at suggesting establishing the Culture Technology City having a goal to assure the identity of Cheonan City which pursues the “Future City” In addition, as a concrete countermeasure for establishing the Culture Technology City, it examined the Storytelling for Cheonan City’s cultural resources. As the culture and technology strategy, storytelling suggests the core base of cultural industry and culture & contents industry in addition to the creation of future oriented culture and employment method of such culture. Considering the cultural and industrial nature of Cheonan City, establishing the Culture Technology City so that the city can create high added values by combining cultural and technological factors is a key measure for developing the city and improving its nation’s life quality.

담낭암에서 전이된 난소암 1 예

정성욱(Seong Wook Chung),이주명(Joo Myeong Lee),이계현(Kei Hyun Lee),강상대(Sang Dae Kang),이숙희(Suk Hee Lee) 대한산부인과학회 2000 Obstetrics & Gynecology Science Vol.43 No.4

A wide variety of cancers metastasize to the ovaries. In a majority of instances the primary site is the gastrointestinal tract, breast, or other gynecologic organs. The best known tumor of this type is signet-ring cell adenocarcinoma. The gallbladder and bile duct are rare sources of these metastases. The authors have had an experience of a case that was presented of Krukenberg tumor metastatic from the gallbladder and report the case with brief review of literature.

선행 제왕절개 임부의 경질분만에 대한 임상적 고찰

왕중서(Joong Seo Wang),박후철(Hoo Chul Park),김극원(Geug Won Kim),송준백(June Baek Song),이계현(Kei Hyun Lee),강상대(Sang Dae Kang) 대한산부인과학회 1999 Obstetrics & Gynecology Science Vol.42 No.8

Objective: The purpose of this study was to evaluate the outcome and safety of vaginal delivery after previous cesarean birth. Methods: This study was based on 303 cases of delivery with previous cesarean birth at Masan, Fatima Hospital from May, 1997 to April, 1998. Among them, 62 cases had performed trial of labor. We had made a comparison between elective repeat section group and trial of labor group by analizing the frequency, successful rate, maternal morbidity, perinatal morbidity and mortality. Results: Among 303 cases with previous cesarean birth, trial of labor was done in 62 cases(20.5%). Among trial of labor group, vaginal delivery was done in 54 cases (87.1%) and repeat section was done in 8 cases(12.9%). Indications for elective repea section before the onset of labor were refuse trial of labor(51.9%), request for tubal ligation(17.4%), and previous section ≥2(7.5%), etc. The successful rate of vaginal delivery according to indication for previous cesarean birth was 85.0%(17/20) in the cases of dystocia and 88.1%(37/42) in the cases except dystocia. The successful rate was not influenced by the indication for previous cesarean birth(P>0.05). There were no maternal death or uterine rupture in the cases of trial of labor. There were no significant difference between elective repeat section group and trial of labor group in maternal morbidity, perinatal morbidity and mortality(P>0.05). Conclusion: Under strict indications, vaginal delivery subsequent to cesarean birth may be safe, and can reduce the rate of cesarean section that was increased constantly.

Magnesium sulfate 와 Ritodrine hydrochloride의 조기진통 억제효과 및 안정성에 대한 비교연구

박후철(Hoo Chul Park),왕중서(Joong Seo Wang),최은주(Eun Ju Choi),정지영(Ji Young Jeong),이동규(Dong Gyu Lee),박정석(Jeong Seok Park),강상대(Sang Dae Kang) 대한산부인과학회 1999 Obstetrics & Gynecology Science Vol.42 No.10

Objectives: The purpose of this study was to evaluate the efficacy and safety of magnesium sulfate and ritodrine hydrochloride in the management of preterm labor. Methods: This study was undertaken to assess the clinical efficacy & safety of magnesium sulfate and ritodrine hydrochloride on 120 patients admitted with preterm labor from Jul. 1, 1996 to Dec. 31, 1998. Results: 1. The incidence of preterm labor was showed 6.0∼7.7% of total number of delivery. 2. The risk factors of the preterm labor were premature rupture of membrane, severe preeclampsia, previous preterm delivery, twin pregnancy, placenta previa, fetal anomaly, incompetent cervix, placental abruption, and uterine myoma in order, but 28.6% of preterm labor had no apparent risk factors. 3. The days gained in uterus was not statistically different between the magnesium sulfate group and the ritodrine group (p<0.05) but longer in the two groups than the control group. And the delivery time was also not statistically different between the magnesium sulfate group and the ritodrine group (p<0.01) but significantly increased in the two groups than the control group. 4. The rate of complete and incomplete success was similar as 12.5% and 35% (total success rate 47.5%) in the magnesium sulfate group, 7.5% and 45% (total success rate 52.5%) in the ritodrine group but only 2.5% and 27.5% (total success rate 30%) was showed in the control group. 5. The side effects were much more in the ritodrine group than the magnesium sulfate group. The patients requiring second-line therapy were similar in the both groups but the main cause was uncontrolled uterine contraction in the magnesium sulfate group, and intolerable side effects in the ritodrine group. 6. The pulse rate was not statistically different in magnesium sulfate group but markedly increased in ritodrine group (p<0.05). After managements of preterm labor, the serum potassium and ionized calcium level was significantly decreased in the two groups (p<0.05, p<0.01). Conclusion: There was not significantly different efficacy and safety of magnesium sulfate and ritodrine hydrochloride in the management of preterm labor.