바이모달 트램의 위치 인식 방법 및 정밀 정차 구현

서기원(Seo Ki-Won),박주연(Park Ju-Yeon),이상남(Lee Sang-Nam),류희문(Ryu Hee-Moon),변윤섭(Byun Yeun-Sub) 한국철도학회 2009 한국철도학회 학술발표대회논문집 Vol.2009 No.5월

This paper presents a method for precisely localizing and parking of bimodal trams. In order to gain an automatically driving system for bimodal trams, precise up-to-date localization, velocity recognition, distance to next station and precise parking location estimation functions are required. This paper proposes a system consisting of control device, steering device, sensor input equipment, driving system, tachometer, vehicle-side sensors, magnetic markers and magnetic sensors. The tram recognizes the precise location via magnetic markers containing information. Parking position and precise distance calculation is embodied by a tachometer. The vehicle-side sensors are used to assure safe station approaching and parking magnetic markers provide improvement of precision while tram parking. This paper provides a system realizing localization and precise parking and afterwards the automatic drive test results are reported and analyzed.

신문광고에 나타난 아파트 계획요소의 변화에 관한 연구 - 분양가 자율화 전.후의 비교를 중심으로 -

박주연,김유희,유창균,조용준,Park, Joo-Yeon,Kim, Yu-Hee,Yoo, Chang-Geun,Cho, Yong-Joon 한국주거학회 2006 한국주거학회 논문집 Vol.17 No.6

This study focused on the fact that changes of policies have influence on housing culture of Korea and analyzed changes in apartment houses planning since the deregulation of the price ceiling through newspaper advertisement. The research compared and analyzed advertisements of apartment houses sales appeared in the 'Gwangju Il-Bo' daily newspaper from 1990 to 2003 by planning factors. : The results are as follows. Reliability and economy were important factors in deciding apartment before the deregulation of the price ceiling policy, but as apartment houses were merchandised after the deregulation of the price ceiling policy, brand of enterprise and image of apartment houses were highlighted more. In the environment of apartment complex, the concerns of location after the deregulation of the price ceiling policy were more increased than before its policy and it means emphasis on living environment for better life. The apartment housing unit and building showed change of the apartment housing unit plan considering residents, high quality of interior design and high-tech and differentiation of equipment since the deregulation of the price ceiling policy. The ground space has been parked or afforested and the underground space is used for parking lot as a part of environment-friendly in the apartment complex planning. The deregulation of the price ceiling policy made brand, image, high-grade and differentiation, and got many changes in the planning side of the apartment sales advertisement.

설사 자돈으로부터 분리한 Escherichia coli의 특성에 관한 연구 ; 항균제 감수성, 장독소 및 섬모의 유전형의 분포 및 plasmid profiles

박주연,신나리,박용호,유한상,Park, Joo-youn,Shin, Na-ri,Park, Yong-ho,Yoo, Han-sang 대한수의학회 2000 大韓獸醫學會誌 Vol.40 No.2

The antimicrobial susceptibility, genotypes of enterotoxins(LT, STa) and pili(K88, 987P), and plasmid profiles were investigated with 102 Escherichia coli isolated from piglets showing diarrhea in Korea. Almost of them were susceptible to ceftiofur(99%), cefquinone(97.1%). However they showed resistance to bacitracin(100%), streptomycin(98%), vancomycin(97%), trimethoprim/sulfamethoxazole(87.2%), tetracycline(84.3%) in antimicrobial susceptibility test. Moreover, all of the isolates demonstrated resistance to more than 2, and 78% of them were resistant to more than 8 of total 17 drugs. Multiplex PCRs for genotyping of enterotoxins(LT, STa) and pili(K88, 987P) were established with primers designed based on sequences from Genebank. Seventeen strains(16.6%) of the isolates had STa gene, 11 strains(10.8%) of them had both STa and LT genes, and 18 strains(17.8%) had K88 gene. But none of the isolates harbored a gene exclusively encoding LT. The gene encoding 987P pili was not found in all isolates. Fifty-four strains of 102 isolates(52.9%) had plasmid with various sizes ranging from 125kb to 1.1kb. Numbers of plasmid per isolates were also various, from 1 to 9. Distinctive relationship between plasmid profiles and genotypes of enterotoxins and pili in the isolates was not found. These results might provide the basic knowledge to establish strategies for the treatment and prevention of colibacillosis in piglets.

가토안에서 전방내 트리암시놀론 주입술이 각막에 미치는 영향

박주연,김훈동,최경식.Joo Youn Park. M.D.. Hoon Dong Kim. M.D.. Kyung Seek Choi. M.D. 대한안과학회 2008 대한안과학회지 Vol.49 No.4

Purpose: To evaluate the safety and effects of intracameral triamcinolone acetonide injection in rabbit corneas. Methods: Triamcinolone acetonide in the amounts of 0.5, 1, and 2 mg was injected into the anterior chamber of rabbit eyes, and intraocular pressure, corneal thickness, and endothelial cell counts were evaluated on days 1, 3, 7, 14, and 28. Twenty-eight days after triamcinolone acetonide injection, the eyes were enucleated and examined after TUNEL staining. Results: No statistically significant differences were found among control, 0.5, and 1 mg triamcinoloneinjected eyes in central corneal thickness, endothelial cell density, pleomorphism, and polymegathism. There was no difference between 2 mg triamcinolone-injected eyes and control eyes for corneal thickness and cell density, but there were statistically significant differences between these two groups for pleomorphism (p<0.05) and polymegathism (p<0.05). Conclusions: The results of this study suggested that intracameral injections of 0.5~1 mg of triamcinolone acetonide are beneficial and cause no toxic effects on corneas.

변환된 GARCH 모형을 활용한 VaR 추정

박주연,여인권,Park, Ju-Yeon,Yeo, In-Kwon 한국통계학회 2009 Communications for statistical applications and me Vol.16 No.6

이 논문에서는 GARCH 모형에서 가정한 오차향의 분포에 근접하도록 자료를 변환하고 변환된 자료를 이용하여 모수와 예측구간을 구한 후 다시 역변환을 통해 원래의 척도에서의 VaR을 계산하는 방법에 대해 알아본다. KOSPI와 KOSDAQ 수익률을 이동시키며 VaR을 계산하고 이들 VaR의 포함확률을 계산하여 병목수준에 얼마나 근접하는지를 알아봄으로써 변환-역변환 방법과 변환을 적용하지 않는 방법의 결과를 비교해 본다. In this paper, we investigate the approach to estimate VaR under the transformed GARCH model. The time series are transformed to approximate to the underlying distribution of error terms and then the parameters and the one-sided prediction interval are estimated with the transformed data. The back-transformation is applied to compute the VaR in the original data scale. The analyses on the asset returns of KOSPI and KOSDAQ are presented to verify the accuracy of the coverage probabilities of the proposed VaR.

변환된 GARCH모형에서의 예측값 추정

박주연,여인권,Park, Ju-Yeon,Yeo, In-Kwon 한국통계학회 2009 응용통계연구 Vol.22 No.5

이 논문에서는 GARCH 모형에서 변환-역변환 방법을 통해 예측값을 추정할 때 발생하는 편향을 줄이기 위한 방법을 소개한다. 모수적 붓스트랩을 활용하여 본래 척도에서의 최소평균제곱오차 예측값인 조건부 기대값을 계산한다. KOSPI와 KOSDAQ 수익률 분석을 통해 제안한 방법이 편향을 줄여주는 것을 확인하였다. In this paper, we introduce the method that reduces the bias when the transformation and back-transformation approach is applied in GARCH models. A parametric bootstrap is employed to compute the conditional expectation which is the prediction value to minimize mean square errors in the original scale. Through the analyese of returns of KOSPI and KOSDAQ, we verified that the proposed method provides a bias-reduced estimation for the prediction value.

인터넷 저작권 침해에 대한 처벌이 태도와 침해 의도에 미치는 영향에 관한 연구: 저작권 교육의 조절변수 효과를 중심으로

박주연,Park, Joo-Yeon 한국과학기술정보연구원 과학기술정보센터 2012 Journal of Information Science Theory and Practice Vol.43 No.3

인터넷을 통해 다양한 콘텐츠에 접속하여 정보를 공유하고 활용하는 일은 생활의 일부분이 되었지만, 인터넷상의 창작물과 저작물에 대한 사용자의 이해와 인식은 매우 낮은 수준에 머물고 있다. 특히 인터넷 사용이 빈번한 학생들은 저작권에 대한 개념과 인터넷상의 저작물 보호에 대한 인식 없이 인터넷상의 콘텐츠를 무분별하게 활용하는 실정이며, 이에 인터넷 저작권 침해는 지속적으로 증가하고 있는 실정이다. 이에 기존의 디지털 침해연구에서 태도, 윤리적 규범, 행동통제, 처벌 등 인터넷 침해 의도의 행동적 요인을 파악하고자 하는 연구를 많이 진행해 왔다. 하지만, 강화된 저작권법과 단속이 온라인 저작물의 보호와 이용환경에 어떠한 영향을 미치고 있는지에 대한 연구가 미비하다. 이 연구의 목적은 인터넷 저작권 침해에 대한 처벌이 개인의 인터넷 침해태도와 의도에 어떠한 영향을 미치는지 알아보고, 저작권 보호에 대한 이해와 인식 등 저작권 교육에 따라 침해태도와 의도에 대한 처벌효과가 어떻게 나타나는지 조사하고자 한다. 연구 분석 결과를 보면, 단속, 규제 등 처벌의 정도는 태도에 직접적인 영향을 미치지만 침해의도에는 직접적인 영향을 미치지 않는다. 하지만, 인터넷 저작권에 대한 교육 및 이해가 상호작용 했을 때 처벌에 따른 사용자의 행동의도는 달라진다. 이 연구 결과를 통해 인터넷의 저작권에 대한 이해와 인식을 도모하고 저작권 보호를 위한 체계적인 교육 및 새로운 정책 수립에 대한 대안을 제시할 수 있을 것이다. Internet is widely spreading in everyday life and it makes easy to find and share information on the Internet. Many of Internet users are copying and distributing copyrighted materials freely on the Internet without recognizing that it is unethical and illegal behavior. The rate of Internet piracy is constantly increasing even though the regulation and punishment for piracy behavior are to be strict. However, there is a lack of study about the relationship between the punishment and education for intenet piracy on users' attitude and intention toward piracy on the Internet. The purpose of this study is therefore to find out the effect of the level of punishment for internet piracy on users' attitude and intention. This study also examines the moderating effect of piracy education on the relationship between punishment and piracy intention. The study shows that the punishment is directly associated with the attitude but not associated with the piracy intention. The piracy education has a significant effect on the relationship between punishment and intention. The result of this study could bring up the issue of intellectual property protection on the Intenet and suggest an importance of piracy education to educators, managers and internet users.

한국 직장인의 자살생각과 관련된 우울 및 불안증상의 특성

박주연,전상원,김은진,신동원,오강섭,신영철,임세원,Park, Jooyun,Jeon, Sang-Won,Kim, Eun-Jin,Shin, Dong-Won,Oh, Kang-Seob,Shin, Young-Chul,Lim, Se-Won 대한불안의학회 2017 대한불안의학회지 Vol.13 No.2

Objective : We have explored the relationship between suicidal ideation and some very specific characteristics of the symptoms of depression and anxiety in Korean employees. Methods : During the period 2013 through 2014, 100,793 employees who visited the Health Screening Center were asked to complete questionnaires, including the Center for Epidemiologic Study-Depression scale (CSE-D), the Beck Anxiety Inventory (BAI) and the presence of suicidal ideation. We attempted to determine which specific subscale, of each the CES-D and BAI would be more closely related to suicidal ideation by different gender and age by logistic regression. Results : Depression has been found to be a more prevalent and predominant factor in suicidal ideation, when compared to the presence of the condition of anxiety. Of four subscales of CES-D, issues arising from interpersonal relationships were most often associated with suicidal ideation, regardless of the chronologic age or gender of the subject. In BAI, cognitive anxiety showed a more significant association with suicidal ideation than did somatic anxiety in our study participants, showing same pattern in different gender and age groups. Conclusions : Among subscales of CES-D and BAI, the interpersonal relationship in CES-D and cognitive anxiety in BAI showed a higher and more significant association with suicidal ideation in Korean employees.

정책 포커스 - 디자인보호법 이렇게 바뀐다

박주연,Park, Ju-Yeon 한국특허정보원 2010 Patent 21 Vol.91 No.-

노년기 요실금 여성의 하부요로증상, 신체활동, 우울이 수면의 질에 미치는 영향

박주연,김나현,Park, Jooyeon,Kim, Nahyun 한국기초간호학회 2017 Journal of korean biological nursing science Vol.19 No.3

Purpose: This study was to identify factors influencing the quality of sleep in elderly women with urinary incontinence and examine the relationship among the factors. Methods: The study investigated 113 elderly women with urinary incontinence who were subject to the visiting care program at health centers in D-gu, D-si, South Korea. The collected data were analyzed using IBM SPSS version 19.0 along with ${\chi}^2-test$, t-test, ANOVA, Pearson's correlation, and multiple regression. Results: The total Pittsburgh Sleep Quality Index (PSQI) of the participants was found to be $11.41{\pm}4.34$. As a result of the correlation analysis, PSQI was found to have significant correlations with Female Lower Urinary Tract Symptoms (BFLUTS) (r= .32, p< .001). The Korean version of Physical Activity Scale for Elderly (K-PASE) was (r= -.34, p< .001) and the Geriatric Depression Scale Short Form (GDS-SF) was (r= .23, p= .012). Multiple regression analysis found sleeping pill use (${\beta}=-.35$, p< .001) had the strongest influence on PSQI, followed by physical activity (${\beta}=-.20$, p< .001), depression (${\beta}=.20$, p< .001), and lower urinary tract symptoms (${\beta}=.19$, p< .001). The total model explanatory power was 28.3% (F= 12.07, p< .001). Conclusion: The study findings are expected to be useful for enhanced understanding of the quality of sleep in elderly women with urinary incontinence.