폴리프로필렌/폴리(L-락트산) 블렌드 섬유의 제조와 특성 분석

박경철,김영호,Park, Kyung Chul,Kim, Young Ho 한국섬유공학회 2013 한국섬유공학회지 Vol.50 No.1

Spin draw yarns (SDY) of polypropylene/poly(L-lactic acid) (PP/PLA) blends with various PLA contents were prepared using a commercial pilot spinning apparatus. Melt-quenched PP/PLA blend films were also prepared by melt-pressed the PP/PLA SDY fibers or PP/PLA blend chips at $200^{\circ}C$ and quenched in ice water. Thermal and mechanical properties of the PP/PLA blend fibers and films were analyzed by using a differential scanning calorimeter (DSC), a scanning electronic microscope (SEM), and a universal testing machine (UTM). Results showed that the melting temperature of the PP in the blends was unaffected by PLA blending and that PP and PLA crystallized independently. Although the melt-crystallization temperature increased slightly with increasing the PLA content in PP/PLA blends, the amount of PP crystal was not affected. PLA existed as beads in PP matrix, indicating that PP/PLA blends are immiscible. Tensile tenacity decreased and extension at break increased with increasing PLA content in PP/PLA SDY fibers.

Poly(trimethylene terephthalate) 혼합에 의한 폴리프로필렌 섬유의 염색성 개선 (I) -PP/PTT 블렌드 필름의 제조 및 열적 특성-

박경철,함명조,김영호,Park, Kyung-Chul,Ham, Myong-Jo,Kim, Young-Ho 한국섬유공학회 2010 한국섬유공학회지 Vol.47 No.3

To improve the dyeability of polypropylene (PP) fibers, PP/poly(trimethylene terephthalate) (PTT) blend fibers with various PTT contents were prepared using a commercial pilot spinning apparatus. The PP/PTT blend fibers were melt-pressed at $260^{\circ}C$ and quenched in ice-water to form PP/PTT blend films, and the thermal properties of the blend films were analyzed. DSC analysis showed that the melting temperature of the PP in the blends was unaffected by PTT blending and that PP and PTT crystallized independently. However, the melt crystallization temperature ($T_{mc}$) increased slightly with increasing the PTT content in PP/PTT blends. Synchrotron WAXS analysis of the annealed PP/PTT blend films showed that the crystal structure of PP in the blend films was the $\alpha$-form irrespective of the presence of PTT. SEM showed that PTT existed as spherical particles in the PP/PTT blends and that the particle size increased with increasing PTT content, which indicates that PTT was immiscible with PP. This immiscibility helped enhance the dyeing properties of the blend PP fibers.

대중교통 네트워크 통합 설계 모형 개발

박경철(Park Kyung-Chul),이성모(Rhee Sung-Mo),전경수(Chon Kyung-Soo) 대한토목학회 2007 대한토목학회논문집 D Vol.27 No.1D

본 연구에서는 다양한 대중교통 수단을 반영할 수 있는 대중교통 네트워크 통합 설계 기법을 제시하는 것을 목적으로 한다. 구축된 통합 노선 설계 모형은 2단계 모형(bi-level programming model) 형태로 이루어진다. 상위구조 문제에서는 노선생성 및 최적 노선망 설계문제를 다룬다. 노선생성 과정에서는 도시철도와 버스 수단의 경쟁을 최소화하는 효율적인 노선 집합을 생성할 수 있는 기법을 제시하였다. 최적 노선망 설계 모형에서는 생성된 노선집합에서 노선대의 선택 및 각 노선 배치횟수를 동시에 결정할 수 있는 유전자 알고리즘을 제시하였다. 허위구조에서는 대중교통 통행배정 부분과 각 노선의 세부 수단을 결정하는 과정으로 이루어진다. 통행배정은 기존 최적전략 통행배정에 환승횟수 제약을 반영한 개선된 모형을 구축하여 적용하였다. 본 연구 모형을 Mandl's Network에 적용 결과, 기존 연구에 비해 노선개수 및 소요차량대수, 이용자 통행시간 측면에서 개선된 효과를 보여주었다. 또한 서울시 강남권 실제 네트워크에 적용시킨 결과, 현황 노선망 보다 효율적인 통행지표가 도출되는 개선된 네트워크를 제시하였다. 따라서 본 연구는 기존 도시내 대중교통 노선망의 효율적인 조정이나 신도시계획, 대규모 택지개발지역 등에 최적 대중교통 네트워크를 설계하는데 기본 틀을 제공할 수 있을 것으로 기대되며, 말미에 한계와 향후 연구방향이 아울러 제시되어졌다. The objective of this research is to develop an integrated transit network design model which tries to minimize the generalized cost of travel while considering various transit modes. A bi-level programming model was formulated for the integrated design model, where the upper-level problem consisted of two main components: a route generation algorithm and a transit route design model. In the route generation procedure, candidate route sets were generated for rail and bus modes, whereas in the transit route design model an optimal set of routes was selected, then respective route frequencies were determined simultaneously using a genetic algorithm. In the lower-level problem, network analysis procedure was explained. The network performance measures were computed through transit assignment and the transit modes of route were determined by route characteristics. The transit assignment model in. the model was based on the concept of "optimal strategies," which is able to find optimal strategies satisfying the constraint of a maximum number of transfers. To investigate the performance of the model and to compare it with other models, the application to Mandl's network was performed, Compared with previous works, the developed model showed improvement in terms of number of routes, travel time, and fleet size. The model was also applied to a real transit network in the Kangnamgu district in Seoul, Korea and a concrete and improved transit network was developed and suggested. Some limitations and future research agenda have also been discussed.

濊貊ㆍ扶餘와 高句麗의 正體性에 關한 硏究

朴京哲(PARK Kyung-chul),宋鎬晸(토론자) 고구려발해학회 2004 고구려발해연구 Vol.18 No.-

A main approach to discern the identity is to confirm the homogeneity in a group and the heterogeneity between groups. Yemaek was the single ethnic group in the separated regions called as Ye and Maek. The ethnic group Ye lived in Kilin, Sungari River, Nunkiang and some part of Korean peninsula, whereas Maek in Liao-tung and also some part of Korean peninsula. We can find the proto-type of the Korean culture in the Yemaek bronze culture influenced by the Mongol-Siberian nomad bronze culture. Yemaek culture means the homogeneous culture in Manchuria and Korean peninsula by the ethnic group Yemaek. This culture was formed in between 12 and 10 C, B. C, and divided to the sub-culture representing the regional and group characters about 7 C, B. C. The western Liao-tung 'mandolin-shaped bronze dagger' culture was homogeneous to that of the eastern by the Yemaek, but heterogenous to the Upper layer culture of Hagazum which existed at the same time. Yemaek formed their original bronze culture different to that of China. This means that Korean culture was formed by Yemaek without any influence by China. Yemaek culture in the bronze culture epoch explored its powers in the iron culture epoch as the state formation or the political groups of the Old Choson, Puyo, Koguryo, Okcho, Dongye, Three Hans: all these are the Yemaek ethnic groups. The Sudansan culture around Kilin in between 7~3 C, B. C. is the base of the Puyo culture, and Puyo developed as a state between 3 C and the late of 2 C, B. C. Whether Maek or Puyo ethnic group was the main power in the Koguryo's state formation is one of the debate issues in Korea. But we can say that Koguryo's territorial expansion and population increase policy were possible by the ethnic and economic affinity based on the homogeneous culture from the bronze epoch. Koguryo people shares the identity of Yemaek ethnic group like Old Choson and Puyo, and keeps some politico￢cultural distance to the non-Yemaek ethnic group as Chinese people.

유전자 알고리즘을 이용한 동적통행배정에 관한 연구

박경철(Park Kyung-Chul),박창호(Park Chang-Ho),전경수(Chon Kyung-Soo),이성모(Rhee Sung-Mo) 대한공간정보학회 2000 대한공간정보학회지 Vol.8 No.1

鴨綠江中․上流流域積石塚築造集團의 存在樣態

朴京哲(Park, Kyung-Chul) 한국고대학회 2010 先史와 古代 Vol.32 No.-

B.C. 4〜3C 이래 鴨綠江중상류 유역의 주민 집단들은 積石塚의 集中築造라는 突出現像을 통하여 자신들의 강력한 正體性과 凝集力을 문화적으로 表出하였다. 臨江-長白地區의 干溝子古墳群축조집단은 家族관계 등 血緣집단을 바탕으로 운영되었다. 이들에게서는 그 生成의早熟性에 비해 持續的성장의 徵候를 찿아 보기 어렵다.禿魯江중류 유역 일대의 다섯 개 집단은 ‘南坡洞집단’을 구심점으로 君長社會(chiefdom)수준인 하나의 地域集團(regional group polity)인 ‘那/國/那國’을 형성하였다. 남파동집단이군장사회를 형성하게 되는 B.C. 2C 말 경을 轉機로 하여 無基壇積石塚에 갈음하여 基壇積石塚이 축조된다. 임강-장백 지구의 樺皮甸子古城과 東甸子古墳群은 하나의 복합유적지인데 6道溝지역의 중심지이다. 화피전자 고성은 압록강 수로를 관리하는 水運驛站의 기능과 더불어지방통치의 據點역할도 수행했다. 良民古墳群은 그 중심 세력 집단의 伸張이 어느 순간 停止되었거나, 중심 세력 자체가 微弱하였을 수도 있다. 혹은 이 지역의 支配主體가 지역적 緣故가 약한 국내성 中央貴族출신일 수도 있다. 長川고분군 축조집단의 중심 세력은 高句麗史전개와 軌를 같이하면서 持續的으로 세력을 유지하고 또 伸張勢를 이어 왔던 것으로 보인다.그 지속적 成長潛在力의 源泉은 그들이 갖고 있는 중앙 귀족세력과의 有機的연관성에서 구할 수 있다. Since the 4th C. B.C. the residents alongside the upper and middle of the Ap-Rok River(鴨綠江), showed their strong identity by concentrating their mobilizing powers to ronstruct the stone filed tomb(積石塚) which was unusual at that times. Among the innumerable tombs in this area, this paper tries to analyse two groups; one is in the upper including the Gan Gu Ja(干溝子) and the Sixth Valley(6道溝), and the other is in the middle including Nam Pa Dong(南坡洞)in the branch stream which is called Dong No River(禿魯江), and Yang Min(良民) and Jang Cheon(長川) in the main stream. The Gan Gu Ja group formed their relatively earlier community from the family base but left no sign of their continuous development. In the Sixth Valley are found the Wha Pi Jeon Ja(樺皮甸子) castles and Dong Jeon Ja(東甸子) tombs; these castles seemed to be the river-transportation managing and regional governing post at the same time. The Nam Pa Dong(南坡洞) group is supposed to have the chiefdom in forming the regional group polity such as Na / Kuhk / Nakuhk(那/國/那國); by this chiefdom stage around the last part of the 2nd C. B.C. this proup built the stylobate style tomb(基壇積石塚) instead of the non stylobate style tomb(無基壇積石塚). In the Yang Min, the ruling group showed no strong power either by some sudden interruption of their expansion, or by lacking the strong ties with the main governing aristocrates in Guk Nae Seong(國內城), whereas the Jang Cheon group continued to keep and expand their potential powers by the strong relationship with Go Gu Ryeo(高句麗).

`요서비파형동검문화´ 의 재인식

박경철(Kyung Chul Park) 한국고대학회 1999 先史와 古代 Vol.12 No.-

Among the discussions in an attempt to approach the residents and their characteristics in West Liao having the bronze culture, Chinese and some of Korean scholars regard the owners of this Bronze culture as DongHo(東胡) or SanYoong(山戎) whereas other Korean and North Korean scholars understand them as YeMaek(濊貊). However, both views accept the relative distinctions bewteen NamSanKeun culture(南山根文化) and SipIhDaeYoungJa culture(十二臺營子文化). The opinions to divide the bronze culture in west Liao into NamSanKeun culture and SipIhDaeYoungJa culture attempt to understand the former with the Northern Bronze Culture`, while the latter is considered as having the relevance with the bronze culture in Liao-tung. The idea that the culture of Mandolin-Shaped dagger in Liao-tung is owned by YeMaek is one of the established theories in Korean scholars. Thus, as a result of the consideration on the co-existence of the cultural type of the multi-knobbed coarse-lined mirror and the pattern of the burial accessories of daggers as well as of the remains-assemblages of the stone cist, SipIhDaeYoungJa culture, unlike NamSanKeun culture, clearly shows the characteristics common in the bronze culture in YeMaek Therefore, it was confirmed that the archeological culture previously regarded as SipIhDaeYoungJa culture is the cultural type of the culture of Mandolin-Shaped dagger in Liao-hsi in YeMaek residence. Based on this idea, this article tried to define the the SipIhDaeYoungJa culture is the cultural type of SipIhDaeYoungJa among Mandolin-Shaped dagger in Liao-hsi. In addition, it is viewed that this cultural type differs from NamSanKeun culture in ShanYoong residence in northern NoRoAhHoSan(努魯兒虎山) of west Liao. The way to explain the the characters of the culture and resident by designating the bronze culture in west Liao as the upper culture of HaGaJeom(夏家店上層文化) is more or less unreasonable. Rather, the bronze culture in this region is seperated as NamSanKeun culture in northern NoRoAhHoSan of west Liao located north to inner Mongolia and SipIhDaeYoungJa culture in the river valley of DaeNungHa(大凌河) of Liaoning province in south of NoRoAhHoSan. SipIhDaeYoungJa culture and the culture of Mandolin-Shaped dagger in Liao-tung and cultural sphere of YeMaek are in the same context. Therefore, it is shown that the SipIhDaeYoungJa culture is a cultural type among the culture of Mandolin-Shaped dagger in Liao-hsi owned by YeMaek residents.

高句麗 邊方의 擴大와 構造的 重層性

朴京哲(Park Kyung-Chul) 고려사학회 2005 한국사학보 Vol.- No.19

예레미야서의 최종형태와 책의 자리(Sitz im Buch)

박경철(Park Kyung Chul) 한신대학교 신학사상연구소 2016 신학사상 Vol.0 No.175

히브리성서와 칠십인역 간의 가장 많은 차이를 보여주는 예레미야서는 구약성서의 어떤 책보다도 가장 많은 문서비평적 논의의 대상이 되어왔다. 또한 신명기역사서와의 상당한 유사점들로 인해 둘 사이의 편집사적 논의가 가장 활발하게 이루어져 왔다. 그러나 현재의 최종형태를 이루기까지의 전(全)역사를 기술하는 것과 현재의 최종형태 자체에 대한 질문은 해석상 큰 차이를 보인다. 구약성서 해석에 대한 새로운 연구 방법의 초점은 현재의 최종형태가 ‘어떻게’ 이루어져 왔는가(통시적)를 살피는 것과는 달리, 현재의 최종형태가 ‘무엇을’ 말해주고 있는가(공시적)에 대한 관심이다. 그럼에도 현재의 예레미야서 최종형태의 구성에 대한 의미를 찾는 공사적 연구는 찾아보기 힘들다. 본 논문은 공시적 비평방법에 의거해 현재의 예레미야서 최종형태 구성의 ‘책의 자리’(Sitz im Buch)의 가장 중요한 역할을 하고 있는 책의 처음과 끝 그리고 예레미야 전체 예언의 핵심이 되는 성전설교를 중심으로 살펴보았다. 이를 통해 현재의 예레미야서 안에 들어있는 수많은 개별 단편들을 추려내는 작업이 아니라, 오히려 현 예레미야서의 최종형태의 구성을 통해서 예레미야서 한 권의 신학이 무엇을 말하는가를 살펴보려는데 그 목적이 있다. In den bisher beherschenden Jeremiaforschungen handelt sich um die Unterschiede und Beziehungen zwischen MT-Jeremias und LXX-Jeremias. Dazu noch läaufen die Diskusionen von Redaktionegeschichte des Buches Jeremias. Dennoch gibt es hier zwei Wege: 1. wie entstand das Endgestalt des Buches, 2. was zeigt das Entgestalt des vorliegenden Buches. Die Versuche mit redaktionsgeschichtlichen Analysen sind fragwüurdig, wenn sie zu beweisen suchen, weshalb das Buch in einer bestimmten Weise in einem historischen Prozeß zu seiner jetzigen Endgestalt gewachsen ist. Denn solche Versuche beginnen nicht mit der Frage, was der vorliegende Text in seiner Endgestalt sagt, sondern sie fangen in der Gegenrichtung an, indem sie fragen, wie der vorliegende Text seine jetzige Form erhalten hat Man muß jedoch beachten, daes in einem Buch zwar zeitlich verschieden zu datierende Schichten gibt, der Leser das Buch jedoch nicht in unterschiedlich alte Schichten trennt, sondern in seiner jetzigen Reihenfolge liest und versteht. Es erscheint daher korrekter, den Text in seiner Einheit nicht erst diachron auseinanderzupflüken, sondern ihn zuerst synchron zu lesen und nach der Intention der gewollten Komposition zu suchen. Diese vorliegende Arbeit geht es um die Antwort der Frage üer die Rolle des Anfangs und der Ende des Buches in seinem ‘Sitz im Buch’. Jedem Anfang wohnt ein Zauber inne _Hermann Hesse

연구논문 : 새로운 부여사상(扶餘史像) 정립을 위한 몇 가지 과제

박경철 ( Kyung Chul Park ) 한국고대학회 2005 先史와 古代 Vol.23 No.-