淸末敎育改革興國民敎育

孫準植 한국중앙사학회 1999 중앙사론 Vol.12-13 No.-

표면 비드높이 예측을 위한 최적의 신경회로망 선정에 관한 연구

손준식,김인주,김일수,장경천,이동길 한국공작기계학회 2005 한국공작기계학회 춘계학술대회논문집 Vol.2005 No.-

The full automation of welding has not yet been achieved partly because the mathematical model for the process parameters of a given welding task is not fully understood and quantified. Several mathematical models to control welding quality, productivity, microstructure and weld properties in arc welding processes have been studied. However, it is not an easy task to apply them to the various practical situations because the relationship between the process parameters and the bead geometry is non-linear and also they are usually dependent on the specific experimental results. Practically, it is difficult, but important to know how to establish a mathematical model that can predict the result of the actual welding process and how to select the optimum welding condition under a certain constraint. In this paper, an attempt has been made to develop an neural network model to predict the weld top-bead height as a function of key process parameters in the welding. and to compare the developed model and a simple neural network model using two different training algorithms in order to select an optimal neural network model.

Novel 3D Porous Polymer Scaffolds by Gas Foaming Method Using Hydropen Peroxide for Tissus Regeneration

손준식,정현정,조경진,박귀덕,김재진,안광덕,한동근 한국고분자학회 2007 한국고분자학회 학술대회 연구논문 초록집 Vol.2007 No.4

신규 3MA 메타크릴레이트 프리폴리머를 이용한 치과용 치면열구전색재의 제조 및 특성

손준식,박귀덕,김재진,한동근 한국생체재료학회 2007 생체재료학회지 Vol.11 No.1

As an alternative to 2,2-bis[4-(2'-hydroxy-3'-methacryloyloxypropoxy) phenyl]propane (Bis-GMA) that contains Bisphenol A, a possible endocrine disrupter, novel multifunctional methacrylated prepolymers, 80-3MA and 4000-3MA mix (2MA:3MA:4MA mixture=45:45:10 wt%), were synthesized and then dental pit and fissure sealants composed of the novel prepolymers, diluent, and inorganic filler were prepared. The viscosities of the prepolymers were much lower than that of the Bis-GMA control. From the results of 1H-NMR analysis, the chemical structures of the prepolymers were similar to that of Bis-GMA. In addition, the polymerization shrinkage, photoconversion, polymerization depth, and diametral tensile strength of the dental sealants formulated with 80-3MA and 4000-3MA mixture prepolymers exhibited comparable to or better than those of the existing Bis-GMA-based one. These results suggest that the novel 3MA methacrylated prepolymers which have no endocrine disrupter can be an alternative to Bis-GMA and be applicable to biocompatible dental materials.

일제 하 ‘대만의식’의 형성 배경과 그 성격

손준식 한국중앙사학회 2010 중앙사론 Vol.0 No.31

This article deals with the speculation on the formational background and characteristics of "Taiwanese consciousness" during the Japanese colonization, which becomes the mental background of Taiwanese liberation theory, that is, the biggest issue of the current Taiwanese society. The Taiwanese society during the Chung Dynsty was not equipped with the condition to develop "Taiwanese consciousness" on the basis of the territorial identity of Taiwan. It was because Taiwan at that time was regionally divided into several districts between north and south, which were rarely contacted with one another, and thereby, its administrative districts were also determined by this regional restrictions, and each administrative districts developed its own discrete community on the basis of "township economy." Furthermore, in the early stage of main Chinese immigration to Taiwan, the immigrants considered regional consolidation as important, and built their community on the basis of their regional language identity. In fact, these immigrants regarded their regional hometown of China as their place of identification, and thus, their regional consciousness was very strong, causing frequent conflicts between different regional groups. Since then, as the main Chinese immigrants (the people of Han tribes) got domesticated in Taiwan, the regional consciousness got blurred and a new collective consciousness to consider Taiwan as their object of identity emerged by 1860s. However, this took the time of Japanese colonization to get concertized as a complete Taiwanese consciousness. Japan could occupy Taiwan as a result of the Sino-Japanese War, but it paid the big price to cope with the strong resistance by Taiwanese people. However, most of anti-Japanese resistances by armed Taiwanese people were pre-modern forms of protest based upon Chung dynasty as their national identity or setting up the motto for the change of old dynasty. In this respect, the Taiwanese society in the early stage of Japanese colonization could not form the Taiwanese national identity as well as the Taiwanese consciousness as their local identity. By the animosity against their betrayed country and the love for their land as well as the separation policy of Japanese colonial government, Taiwanese people were getting segregated from China and accumulated Taiwanese consciousness against the exploitation and racial discrimination by the Japanese colonial government. After their occupation of Taiwan, Japan stabilized the public security by subduing the protest groups, and built up the infrastructure of capitalist system by renovating the real estate controlling system and constructing the transportation system. They also set up the colonial economic system to make Taiwan as a place for providing food and tropical products. Japanese colonial exploitation could be found in the tax burden of Taiwanese people and the heavy influx of Japanese industrial capital as well as the percentage of industrial laborers and teenage laborers. It could be also found in the confiscation of pageantry lands by allowing the Japanese capital group to use those lands as well as the policy of allowing Japanese sugar company to control the price of sugar cane products. On the one hand, Japan set up the despotic system to control rights and duties of Taiwanese people by adopting acting- legislature system, and this tendency continued in the general governor system. To maintain this system, the Japanese colonial government functioned as a police state by employing the intimidating and vast power of the police. The police threatened Taiwanese people to obey the government and discriminated them with their power and authority. The racial discrimination to Taiwanese people was done in the recruitment of government officials, their promotion and salary as well as the education opportunity and content, teacher's quality, education budget and school admission system. Particularly, school education functioned as a means of reconfirming the social relationship and political role between the oppressors and the oppressed. On the other hand, various policies by Japanese colonial government in Taiwan resulted in the consolidation of Taiwanese modern consciousness and the figuring out of regional problems, even though they were originally for the benefit of Japan. The construction of transportation network promoted social mobility, and thereby, it narrowed down the distance between ethnic groups. The currency reform and measure reform instigated the distribution of the goods and the capital. Japanese language policy eradicated the serious communication problems that many dialects caused among the local tribes. As a result, the consolidation between local tribes was strengthened and the local township based economy was converted into the national market economy. Also, industrialization and urbanization promoted social communication in Taiwan, and thus, propelling the formation of Taiwanese consciousness. By these background that I mentioned above, the Taiwanese consciousness as a local identity became dominant by 1920s, and it was confirmed by the use of the term "Taiwan" and the "Taiwanese people." The Taiwanese imagination, which started by Taiwanese students in Japan, became stronger by anti-colonial resistance, but it broke up by the strategic conflicts. By the attitude to national identity and the means of movement, The anti-colonial movement of the Taiwanese people during the Japanese colonization can be categorized into "Nationality Group", "Watching Group", "Taiwanese Revolution Group," and "Enlightenment Group." "Nationality Group" and "Watching Group" set the return to China as their ultimate goal, and in that sense, these two groups looked similar in their identity attitude, but "Nationality Group" was protesting in the mainland of China while "Watching Group" was in Taiwan and they could not but admit the Japanese power. "Watching Group" recognized that they could not liberate Taiwan from Japanese power, but they adopted the strategy of distinguishing Taiwanese people from Japanese people by employing "Han Race" and "China-centric Ethnicity" for the consolidation of Taiwanese people. Consequently, they promulgated "Taiwanese consciousness" as an independent local unit, representing the Chinese consciousness in reaction to Japanese consciousness. "Taiwanese Revolution Group", which was led by the leftist intellectuals, tened toward the class movement, even though they promulgated "Taiwanese Nationality" and "Taiwanese Independence". The Taiwanese liberation, which was the motto of "Nationality Group", only implied the liberation from Japan. On the other hand, Taiwanese consciousness of "Taiwan Literary Group" which represented "Enlightenment Group" was different from Chinese consciousness in that they put an emphasis on the dominancy of Taiwanese literature.

골 재생용 신규 하이드록시아파타이트/폴리락티드 이중구조 다공성 지지체의 구조 및 특성

손준식,박귀덕,한동근,Guda Teja,Mark Appleford,Joo L. Ong,오선호 한국조직공학과 재생의학회 2009 조직공학과 재생의학 Vol.6 No.13

The goal of this study was to develop novel hydroxyapatite (HAp)/ polylactide (PLA) bi-layered porous scaffold for tissue-engineered bone regeneration. To mimic normal bone structures, the outside cortical-like shells fabricated consisted of porous HAp and an inner trabecular-like core was made of porous PLA. Cortical-like porous HAp scaffolds with hollow in its inside was fabricated using a polymer sponge template. Trabecular-like porous PLA scaffold was directly formed by a particle leaching/gas foaming technique with sodium percarbonate as a novel porogen in inner diameter of HA scaffolds. The oxygen plasma treatment was performed to modify the PLA surface of bi-layered porous scaffold. The plasma-treated bi-layered scaffold was subsequently dipped in an alcoholic solution containing calcium and phosphate ions to deposit precursors on the surface. The surface modified bi-layered scaffold was immersed in simulated body fluid (SBF) at 5 times ionic concentration for 24 hr to obtain the final bonelike apatite coated HAp/PLA bi-layered porous scaffold. It was observed that the HAp and PLA parts of fabricated bi-layered scaffolds contain open and interconnected pore structures, with no structural delaminations on the external surfaces. Using helium pycnometry, the maximum porosity was observed to be greater than 96% for bi-layered scaffold. Additionally, the distribution of pore size for the PLA scaffolds was from 100 to 700 μm. Also, the dense and uniform bone-like apatite layer was successfully formed on surface of HAp/PLA bi-layered scaffold after immersion for 1 day in SBF solution. Total protein and alkaline phosphatase (ALP) content of bi-layered scaffold were higher than the control HAp scaffold during 4 weeks in vitro culture study using human embryonic palatal mesenchymal (HEPM) cells. It is indicated that bi-layered porous scaffold has stronger ability to induce HEPM cell attachment, proliferation, differentiation, and mineralization than that of the control HAp porous scaffold. The resulting apatite coated HAp/PLA bi-layered porous scaffold is more bioactive that might be applicable as a promising scaffold for osteogenesis. The goal of this study was to develop novel hydroxyapatite (HAp)/ polylactide (PLA) bi-layered porous scaffold for tissue-engineered bone regeneration. To mimic normal bone structures, the outside cortical-like shells fabricated consisted of porous HAp and an inner trabecular-like core was made of porous PLA. Cortical-like porous HAp scaffolds with hollow in its inside was fabricated using a polymer sponge template. Trabecular-like porous PLA scaffold was directly formed by a particle leaching/gas foaming technique with sodium percarbonate as a novel porogen in inner diameter of HA scaffolds. The oxygen plasma treatment was performed to modify the PLA surface of bi-layered porous scaffold. The plasma-treated bi-layered scaffold was subsequently dipped in an alcoholic solution containing calcium and phosphate ions to deposit precursors on the surface. The surface modified bi-layered scaffold was immersed in simulated body fluid (SBF) at 5 times ionic concentration for 24 hr to obtain the final bonelike apatite coated HAp/PLA bi-layered porous scaffold. It was observed that the HAp and PLA parts of fabricated bi-layered scaffolds contain open and interconnected pore structures, with no structural delaminations on the external surfaces. Using helium pycnometry, the maximum porosity was observed to be greater than 96% for bi-layered scaffold. Additionally, the distribution of pore size for the PLA scaffolds was from 100 to 700 μm. Also, the dense and uniform bone-like apatite layer was successfully formed on surface of HAp/PLA bi-layered scaffold after immersion for 1 day in SBF solution. Total protein and alkaline phosphatase (ALP) content of bi-layered scaffold were higher than the control HAp scaffold during 4 weeks in vitro culture study using human embryonic palatal mesenchymal (HEPM) cells. It is indicated that bi-layered porous scaffold has stronger ability to induce HEPM cell attachment, proliferation, differentiation, and mineralization than that of the control HAp porous scaffold. The resulting apatite coated HAp/PLA bi-layered porous scaffold is more bioactive that might be applicable as a promising scaffold for osteogenesis.

華北密輸(1933-1937)와 日本의 中國侵略 : 밀수의 전개과정을 중심으로

손준식 중국근현대사학회 1998 중국현대사연구 Vol.6 No.-

조사 : 고 정주동 은사님 영전에

손준식 경북어문학회 1971 어문론총 Vol.6 No.1

논문(論文) : 식민지 조선의 대만(臺灣) 인식 -『조선일보』(1920-1940)기사(記事)를 중심으로-

손준식 한국중국근현대사학회(구 중국근현대사학회) 2007 중국현대사연구 Vol.34 No.-

연속냉간압연의 두께제어 성능향상에 관한 연구

손준식,김일수,권욱현,최승갑,박철재 제어로봇시스템학회 2000 제어로봇시스템학회 국내학술대회 논문집 Vol.2000 No.10