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English-only Education Movement in the U.S.: Focusing on Proposition 227
Jun-Eon Park 한국사회언어학회 2004 사회언어학 Vol.12 No.1
Park, Jun-Eon. 2004. English-only Education Movement in the U.S.: Focusing on Proposition 227. The Sociolinguistic Journal of Korea, 12(1). This paper analyzes the recent English-only movement prevalent in the United States of America, focusing on Proposition 227, which was enacted as California Educational Code in 1998. Seemingly, the legislation of 227 is considered a victory of pro-English monolingual activists, who have propagated their anti-bilingual sentiment throughout the nation since the 1980s. Advocates of English-only education maintain that bilingualism and bilingual education do much harm to the limited English proficient students by obstructing the development of English proficiency, whereas advocates of bilingual education rebut this argument as groundless and misleading. Unless Proposition 227 is overturned by California voters, the educational law is expected to exert its legal power in oppressing bilingualism and bilingual education that have been appraised as beneficial to the education of ethnic minority students in the state.
全彦燦,芮圭玄,朴興植,全泰玉 東亞大學校 1989 東亞論叢 Vol.26 No.1
The present study was undertaken to investigate the otheogonal cutting mechanism of pure aluminum with sintered carbide tools, such as the cutting resistance, shear angle and work, the formation of chip and the instantaneous aspect for cutting process. The results obtained are as follows: 1. In case of negative tool rake angle, the decrease rate of cutting resistance was progressed till high speed cutting. 2. When the cutting depth is small, the shear angle of cutting part depends on the influence of size effect. 3. The formation of chip is classified into shear type, vertical compression type, horizontal compression type and flow type. 4. The measurement of the built-up edge was able to obtain decreased by the geometric expression of the instantaneous aspect for cutting process.
흰쥐 Kupffer 세포에 대한 Propofol의 작용
박세훈,지대림,성언기,김희선,송인환,박희영,김준수,이덕희,박대팔 대한마취과학회 2002 Korean Journal of Anesthesiology Vol.43 No.4
Background: Propofol has an antioxidant capacity and can be used for ischemia-reperfusion injury of the liver. However, the effects of propofol on the Kupffer cells have not been establisked. Methods: Kupffer cells were isolated and cultured from male Sprague-Dawley rats. The effects of propofol on the Kupffer cells were evaluated by a phagocytosis assay, TNF-α gene expression, and superoxide anion release after administering propofol in different concentrations on the cultured Kuprrer cells. Results: The latex bead phagocytosis by the Kupffer cells was suppressed when the Kupffer cells were exposed to propofol irrespective of concentrations. Higher propofol concentrations decreased the loss of Kupffer cells after latex bead phagocytosis. Propofol induced TNF-α mRNA expression in the Kupffer cells, but the mRNA expression level after 50㎍/ml of propofol decreased. The pattern of TNF-α mRNA expression induced by propofol was different to that induced by LPS: TNF-α mRNA was expressed continuously in the propofol-treated cells until 16 hours after exposure to propofol, whereas the level of TNF-α mRNA expression induced by LPS was evident after 2 hours and was not found thereafter. TNF-α production after propofol treatment was not higher than that of the control. Formazan presipitation did not show any qualitative differences between cells untreated or treated with propofol concentrations of 0.5, 5.0, and 50 ㎍/ml. Conclusions: These results showed that propofol might inhibit Kupffer cells. This suggests that propofol and be used for patients with ischemia-reperfusion injury of the liver. (Korean J Anesthesiol 2002; 43: 475~484)
全泰玉,全彦燦,朴興植 동아대학교 공과대학 부설 한국자원개발연구소 1984 硏究報告 Vol.8 No.2
For the study, thermoplastic rigid polyvinyl chloride, which has been widely used for the parts of machine, has been applied as high polymetric materials and has been investigated into relationship between circumferential surface and steel sphere in order to clear the characteristics of the softened surface layer with frictional velocity, contact load and feed. The results obtained are as follows. 1. In constant frictional velocity, as the contact load was increased by degree the coefficients of friction was slowly decreased and it has inclination of increasing by softness on the surface layer according as the contact load was increased. 2. In constant contact load, as the frictional velocity was increased by 63m/min the coefficients of friction was slowly decreased, and in more than, the coefficients of friction was rapidly decreased by a lubricating effect of the frictional surface layer. 3. The fusional trace on the harden polyvinyl chloride was appeared by the frictional force with it according as the frictional velocity and the contact load were become high, especially appeared the deep ones with softening on the frictional surface. 4. Under condition of feeding, the coefficients of friction of a new surface was high in higher than 503m/min of the frictional velocity, but low in lower than the value comparing with repeated friction.
全泰玉,全彦燦,朴興植,朴永宅 동아대학교 공과대학 부설 한국자원개발연구소 1989 硏究報告 Vol.13 No.2
In this paper, results of test about machinability of the carbide tools having various tool angle on light cutting are described. The conclusion is as follows ; 1. According to the increase of cutting speed, specific cutting forces are decreased. 2. According to the increase of cutting speed and feed, chip width and chip thickness are both decreased. 3. The experimental roughness of working surface became smaller than theoretical roughness. 4. Size of burrs decreased with increase of disengage angle.
전태옥,전언찬,박흥식,배춘익 동아대학교 공과대학 부설 한국자원개발연구소 1995 硏究報告 Vol.19 No.2
Temperature distribution on the flank face in orthogonal turning with cutting tool of high speed steel is studied by using a finite element method and experiments. Experiments are carried out to verify the validity of the temperature measurement by using a thermoelectric couple junction imbedded in a cutting tool. Good agreement is obtained between the analytical results and the experimental ones for the temperature distributions on flank face of cutting tool Flank wear were observed by the tool microscope. The analytical results show that the temperature on the top flank face of a tool is higher because of the difference of the friction velocity on each face of the tool.
( Jun-eon Park ) 숭실대학교 인문과학연구소 1995 인문학연구 Vol.25 No.-
본 논문에서는 이중언어 사용 사회에서의 언어 혼용 (code-switching)에 관한 연구들, 특히 아동들의 언어 혼용 사용에 관한 연구들을 개관하였다. 이중언어 사용 아동들의 언어 혼용 연구는 크게 통사, 구문적 연구와 사회언어학적 연구로 대별되는데 통사적 연구들은 혼용되는 언어요소의 분석에 촛점을 맞추고, 사회언어 학적 연구는 언어의 혼용 사용의 의사소통상의 기능적 역할에 촛점을 맞추고 있다. 영어/스페인어를 사용하는 이중언어 아동들의 경우 자신들의 효과적인 의사 소통을 위해 두 언어를 적절히 혼용하고 있어 언어혼용이 중요한 의사소통 전략임을 알수 있다. 이러한 현상은 언어적배경이 다른 타 이중언어 사회의 이동들에게서도 발견되어. 이중언어의 혼용 사용이 성인뿐 아니라 아동들에게도 보편적인 의사소통 전략임을 증명한다.
Adrenal Ganglioneuroma Treated by Laparoscopic Surgery
Jun Young Hwang,Yoo Shin Choi,Jun Seok Park,Young Seok Kim,Beom Gyu Kim,Seong Jae Cha,Sung Jun Park,In Taik Chang,Sung Il Park,Eon Sub Park 대한외과학회 2008 Annals of Surgical Treatment and Research(ASRT) Vol.75 No.1
Adrenal ganglioneuromas are rare benign tumors arising from the neural crest tissue of the sympathoadrenal nervous system. Because most of these tumors are hormonally silent and patients with them are often asymptomatic, they are often identified incidentally in patients undergoing abdominal imaging studies for unrelated reasons. Diagnosis of this entity is very difficult to make, with definitive diagnosis being based on histological examination. Surgical resection may be both diagnostic and therapeutic. A technique for laparoscopic adrenalectomy of benign adrenal tumors has recently been developed. If the tumor is excised with an adequate resection margin, the postoperative prognosis is very good. In this report, we describe two cases of adrenal ganglioneuroma that were treated using a laparoscopic resection procedure, and we also present a review of the pertinent literature.
Park, Chang Yong,Yu, Dai-Hyuk,Lee, Won-Kyu,Park, Sang Eon,Kim, Eok Bong,Lee, Sun Kyung,Cho, Jun Woo,Yoon, Tai Hyun,Mun, Jongchul,Park, Sung Jong,Kwon, Taeg Yong,Lee, Sang-Bum Springer-Verlag 2013 METROLOGIA -BERLIN- Vol.50 No.2
<P>We measured the absolute frequency of the optical clock transition <SUP>1</SUP>S<SUB>0</SUB>(<I>F</I> = 1/2)–<SUP>3</SUP>P<SUB>0</SUB>(<I>F</I> = 1/2) of <SUP>171</SUP>Yb atoms confined in a one-dimensional optical lattice and it was determined to be 518 295 836 590 863.5(8.1) Hz. The frequency was measured against Terrestrial Time (TT; the SI second on the geoid) using an optical frequency comb of which the frequency was phase-locked to an H-maser as a flywheel oscillator traceable to TT. The magic wavelength was also measured as 394 798.48(79) GHz. The results are in good agreement with two previous measurements of other institutes within the specified uncertainty of this work.</P>