솔-젤 공정(工程)을 이용(利用)하여 제조(製造)된 YAG($Y_{3}Al_{5}O_{12}$) 분말 입형제어

박진태,김철주,윤호성,손정수,Park, Jin-Tae,Kim, Chul-Joo,Yoon, Ho-Sung,Sohn, Jung-Soo 한국자원리싸이클링학회 2008 資源 리싸이클링 Vol.17 No.5

Sol-gel process applied in this study was carried out by chelation of metal ions and citric acid. From the results of thermal gravimetric analysis and XRD analysis of gel powder obtained through sol-gel and heat treatment, gel powders are mostly amorphous, and crystallize completely at $900^{\circ}C$, and the crystalline structure of YAG increases with increasing calcinations temperature. Since YAG prepared by sol-gel & calcinations process was porous, and the sape and size was irregular and nonuniform, the shape and size of YAG powder had to be controlled. Therefore the effects of organic materials such as ethylene glycol and surfactant on the crystalline structure of YAG powder were investigated. Polyesterification of ethylene glycol and citric acid separated reaction area of metal ions in the solution and decreased the size of YAG primary particles. The addition of Igepal 630 as surfactant formed the droplet in the solution, and increased the size of primary particles which forms the aggregate of YAG In order to obtain monodispersed YAG particles of uniform size, gel powder prepared with organic materials had to be milled before calcination. And milling process was very important for obtaining YAG of uniform size. 본 연구에서 적용한 솔-젤 공정은 반응 초기에 금속 이온들과 구연산의 킬레이트화 반응에 의하여 진행되었다. 솔젤과 열처리 과정을 거쳐 얻은 젤 분말의 열분석 결과, YAG를 얻기 위한 젤 분말의 소성온도는 $900^{\circ}C$ 이상 되어야 하며 소성온도가 증가함에 따라 생성되는 YAG의 결정도가 향상되었다. 솔-젤 반응 시 구연산을 사용하여 얻은 젤 분말을 소성시켜 얻은 YAG는 불규칙한 다공성 구조를 가진 조각들로 구성되었으며, YAG 입자크기 조절을 위하여 유기첨가물의 영향을 고찰하였다. 유기산 보조제인 에틸렌 글리콜은 솔-젤 반응 초기에 구연산과 중합반응을 통하여 그물 망상구조를 형성하여 용액 내 금속이온들의 반응영역을 효과적으로 분리시켜 YAG를 미세화 시켰으며, 계면활성제인 Igepal 630은 에멀젼에 의한 용액 내 방울(droplet)을 형성하여 YAG 응집체를 구성하는 입자들의 크기를 증가시켰다. 그러나 YAG형태는 크게 개선되지 않았기 때문에 젤 분말로부터 균일한 YAG를 제조하기 위하여, 응집체 크기 감소와 균질 크기를 갖도록 젤 분말을 건식분쇄 하였다. 이러한 결과로부터 솔-젤 반응을 거쳐 얻은 젤 분말을 소성 전에 분쇄하는 것은 최종 YAG산화물의 입도제어에 아주 중요한 공정임을 알 수 있었다.

가정용(家庭用) 폐건전지(廢乾電池)의 재활용(再活用) 상용화(商用化)를 위한 물리적(物理的) 처리(處理)

박진태,강진구,손정수,양동효,신선명,Park, Jin-Tae,Kang, Jin-Gu,Sohn, Jeong-Soo,Yang, Dong-Hyo,Shin, Shun-Myung 한국자원리싸이클링학회 2006 資源 리싸이클링 Vol.15 No.6

가정용 폐건전지의 재활용 상용화를 위하여 물리적 처리방안에 대한 재활용 기술을 확립하기 위한 형상선별, 파쇄, 자력선별, 입도분리 그리고 와전류 정전선별을 통한 물리적 처리연구를 수행하였다. 그 결과 형상선별기를 이용하여 폐망간전지를 형상별 중량별로 시간당 $400{\sim}600$개의 속도로 분리하는 기술을 확립하였다. 파쇄, 자력선별 그리고 입도분리를 통해 망간, 아연, 철의 함량을 조사해본 결과, 자성체에는 망간과 아연 둥의 불순물 함량이 각각 0.1%이하였으며 99%이상이 Fe임을 알 수 있었다. 또한 비자성체의 경우에는 폐망간전지 종류에 따라 Zn이 $22{\sim}30%$, Mn이 $16{\sim}22%$ 그리고 Fe는 $1{\sim}3%$정도였고 기타 탄소봉과 플라스틱, 종이 등이 대략 $37{\sim}50%$정도였다. 와류 정전선별기로 Zn 판상을 회수한 결과, 최적실험 조건인 선속 $2,250m/min{\sim}2,750m/min$ 사이에서 96%이상의 회수가 이루어졌다. This study was carried out for establishing the physical recycling technique for commercializing process on household batteries. The procedure involves shape separator, crushing, magnetic separation, classification and eddy current separation in sequence. The separation capacity was 400-600 unit cell/hr with shape separation system. The impurities such as manganese and zinc in the magnetic product were below 0.1% respectively, the concentration of iron was above 99% in spent carbon zinc battery. Also non-magnetic products are composed of 22-30% En, 16-22% Mn, 1-3% Fe in the case oi spent zinc carbon battery. The amounts of other components such as carbon rod, plastics and separator were about 37-50%. From the eddy current separation of nonferrous products, the plate-type zinc components were separated up to 96% with 2,250-2,750 meter/min of the conveyor speed.

비 정규 분포 잡음 채널에서 높은 신호 대 잡음비를 갖는 무선 센서 네트워크의 정보 융합

박진태,김기성,김기선,Park, Jin-Tae,Kim, Gi-Sung,Kim, Ki-Seon 한국군사과학기술학회 2009 한국군사과학기술학회지 Vol.12 No.5

Fusion of decisions in wireless sensor networks having flexibility on energy efficiency is studied in this paper. Two representative distributions, the generalized Gaussian and $\alpha$-stable probability density functions, are used to model non-Gaussian noise channels. By incorporating noise channels into the parallel fusion model, the optimal fusion rules are represented and suboptimal fusion rules are derived by using a large signal-to-noise ratio(SNR) approximation. For both distributions, the obtained suboptimal fusion rules are same and have equivalent form to the Chair-Varshney fusion rule(CVR). Thus, the CVR does not depend on the behavior of noise distributions that belong to the generalized Gaussian and $\alpha$-stable probability density functions. The simulation results show the suboptimality of the CVR at large SNRs.

논문 : 한말 수원지역 역둔토 조사의 성격

박진태 ( Jin Tae Park ) 이화사학연구소 2013 梨花史學硏究 Vol.0 No.46

Since the end of 18th century, Suwon-Bu(水原府) had developed as a political-military city where Jang-Yong-Oi-Yong, a military camp, was founded and Dun-To(屯土), the land of providing material support to Jang-Yong-Oi-Yong, was established. This paper analyzes the feature of the Chosun government`s survey on Yeok-Dun-To(驛屯土) in Suwon in the late of Great Han Empire. According to the Hwa-Sung-Ji(華城誌) . written in 1831, Dun-To under the control of Suwon-Bu consisted of total 28 farmlands of Dun(屯) including 8 farmlands in Suwon-Bu, 5 farmlands in Yongin-l-lyun, 6 farmlands in Kyunggi-Do, 3 farmlands in Chungcheong-Do, and 6 farmlands in Hwanghe-Do. The gross area of Dun-To reached 728.088 gyul(結) and 5,770.9 durak(斗落), only 18.5% of which was located in Suwon-Bu and the rest of which was located outside of the city. This implies that Suwon-Bu had been highly regarded as the new city based on city development policy of the Chosun government. The government purchased the farmlands of Deyou-Dun(大有屯) and Chukmanje-Dun(祝萬堤屯)and run these ones through the landowner system(地主制) in which the landowner, the government in this case, collects land rent from the peasants. The rest of farmlands, on the other hand, collected 100 du(斗) or 200 du of millet per gyul(結) from peasants in the form of land tax instead of land rent. Under this system, the overall scale of Dun-To had been largely maintained until the end of 19th century. In the action of Gab-O-Seung-Chong(甲午陞摠) which planned to abolish the tax-free farmland system and the survey on Yeok-Dun-To in 1894, Deyou-Dun and Chukmanje-Dun were excluded from targets of survey, which seems to prepare for the following investigation of land ownership. The overall amount of Dun-To under the control of Suwon-gun accounted for 7.3% of the gross area recorded in land ledger of Suwon-gun and 14.7% of taxed land, which allows us to see the scale of Dun-To in Suwon-Bu. In accordance with Ul-Mi-Sa-Pan(乙未?辦) of 1895 in which the Agriculture and Business Department of the Enlightenment Party Government investigated a demesne of the state in Suwon-gun, the results were as follows: 209.134 gyul of Yeok-To, 260.771 gyul of Dun-To, 42.701 gyul of Gung-Bang-Jyun(?房田) and 166.46 gyul of Mok-Jang-To(牧場土). The basic unit of this survey was Durak which was an absolute unit for calculating area of land, and the land rent (or land tax) was charged every 100 duraks. Although this seems certainly a kind of preparations for the investigation of land ownership, it was still crucial to figure out and check the land rent (or land tax) of Yeok-Dun-To. The land rent was as low as 3 or 4 du of millet per durak since peasants paid fixed rent in advance regardless of how much they could produce in harvest season. The survey conducted by the Military Department, which took over the right of management of Yeok-To from the Agriculture and Business Department in 1897, identified that most of Dun-To was under control of Kung-Nae-Bu, the Department of Royal Household. This implies how Great Han Empire operated the government as well as how much of the demesne of the state belonged to Kung-Nae-Bu. While this survey showed that the characteristic of land rent (or land tax) differed from each other in various ways, the average rent, in the case of rice field, constituted 3 du of millet per one durak. Even though Kwang-Mu-Sa-Gum(光武?檢) since 1899, a kind of the self-survey of Nae-Chang-Won(?藏院) on its private land, basically followed the model of one conducted by the Military Department, the effort to take the control over Dun-To located in other areas was no more significant in that the farmlands in the center such as A-Mun-Dun-Jeon and Mok-Jang-To were entirely measured in the unit of Gun. In particular, by measuring all of farmlands as durak, this survey distinguished itself from the one of Gyul-Bu(結負) based on the feudal way of collecting tax. The payment in kind replaced the one in money, and the average rent of comparable rice field still fell on the extent of 3.4 Du of millet per durak. As Nae-Chang-Won pursued to raise the rent, peasants complained of the unfairness of its double taxation; however, it was common for them to compromise until reaching the rate of private land`s rent. Kyung-Ri-Won(經理院) whose function and scale were downgraded from those of Nae-Chang-Won in 1905 surveyed the Yeok-Dun-To in Suwon-gun, most of which was identified in this survey: the gross area including 3 farmlands of Yeok-To and 24 farmlands of Dun-To was 756 Ilkyung, 15,324.1 durak, 122.838 Kyul, etc.. The law issued in June 1908 announced that government nationalized this Yeok-Dun-To in Suwon and vested its control in Tak-Ji-Bu(度支部). Since then, the actual survey on Yoek-Dun-To conducted by the Residency-General of Japan identified that state had the exclusive right of possession over the farmlands. The rent of rice field per durak in this period came to 5.3 du of millet for the first time, which was significantly close to the rent of private land. Consequently, this implies that it was difficult for the committee of troubled land to decide the second type of You-To among Yoek-Dun-To in Suwon-gun as private land.

탈놀이와 지역공동체 -하회마을의 공동체적 성격과 언어문화의 연극적 수용

박진태 ( Jin Tae Park ) 한국어교육학회 2005 국어교육 Vol.0 No.116

민속극의 예술성

박진태(Park Jin-tae),정형호(토론자) 비교민속학회 2002 비교민속학 Vol.23 No.-

Mask-dance drama is a composite art. Then the synthetic approach must be tried to the sides of literature, drama, dance, music, and formative arts. Viewing the side of formative arts, the masks are made by the principle of the symmetry and asymmetry. Viewing the side dramaturgy, the character do not appear on the stage, but in the lines. Viewing the side of literature, repetition, homonym, parody, personification, sexual story and the like are used for the satirical effect.

춘향가 발생설화를 통해 본 춘향가의 수용양상

박진태(Park Jin-Tae) 비교민속학회 2003 비교민속학 Vol.24 No.-

The legends of origination of Chunhyangga(春香歌) can be classified into three types. The characteristics of the content of three types can be summarized as mentioned below. In the first type it is emphasized that the hero is the historical person. In the second type it is emphasized that the heroine died with revenge. In the third type it is emphasized the writer was a yangban(a nobleman) or a person of the intermediary class. Then the function of three types can be indicated as mentioned below. In the first type the nobility emphasized the positive aspect of their class. In the second type people emphasized the method of paying off their scores by the shamanistic ritual. In the third type it is emphasized that the ruined peers and the intermediary class tried to satisfy their desire. Finally from the historical point of view three types of the legends of origination of Chunhyangga suggest the history of Chunhyangga. The first type hints the reception attitude of the nobility toward Chunhyangga in the seventeenth century. The second type hints the reception attitude of the commoner toward Chunhyangga in the eighteenth century. The third type hints the reception attitude of the ruined nobility and the intermediary class nineteenth century.

호랑이의 문학적ㆍ조형적 형상화

박진태(Park Jin-tae) 우리말글학회 2009 우리말 글 Vol.47 No.-

Because the Siberian tigers inhabit in Manchuria and the Korean Peninsula, the Korean race expressed the tigers in the literature and paintings. The tigers were changed from the natural existence to the cultural being by the religious mentality, humanistic thinking and imaginative power. The Korean race hunted the tigers and expressed the tiger hunting in the narrative and painting. They deified the tigers and expressed those in the literature and painting. Then the tiger gods were changed from the god of fear to the god of mercy. The Korean race personified the tigers and expressed those in the literature and painting. They projected the positive and negative personalities on the tigers. And then they expressed those in the literature and painting. The upper class projected the positive personalities and created the sublime beauty. But the middle and lower classes projected the negative personalities and created the comic beauty.

공연문화와 국어교육

박진태 ( Jin Tae Park ) 한국어교육학회 2008 국어교육 Vol.0 No.126

삼국유사를 통해 본 고대사회의 제의문화

박진태(Park Jin-tae) 비교민속학회 2001 비교민속학 Vol.21 No.-

The plot-structure is verified by the ancient and present rites. the rites consist of the movement of the spirit-pole(the spirit-possessed man, the shaman) and the process of five units ; Naerim-goot(rite of advent), Sinyu(round of calls and praying), Ssaum-goot(rite of conflict), Junsong-goot(rite of ascension). The rites are performed for the gods of heaven, mountain, water and earth. Because the plot-structure of the myths and legends of Samgukyusa corresponds to it of the rites. Those myths and legends ate assumed to be the correlative of the rites. And those myths and legends are classified into three types. Firstly the worship for the god is strengthened by emphasizing the authority of the god. Secondly the relation between a god and a man spreads to the relation between a king and a vassal. Thirdly the god gives the magic treasure to the king for endowing him with the authority of the ruler.