한국 대학생들의 맞춤법 오용실태: 후속연구

이진성(Lee Jinsung) 한국사회언어학회 2014 사회언어학 Vol.22 No.3

This study is a follow-up study of Lee's(2001) “A study of malpractice of orthography among Korean college students-with a special emphasis on the influence of chatting language”. Within the similar research framework, Some malpractice of orthography in current college students' essays were compared with those of Lee's. The aim of this study, therefore, is to find out how, in what aspects and extents, the influence of chatting language on formal written language has manifested different characteristics after a span of 13 years. Regardless of the drastically increased use of chatting language these days, most of its characterizing features were found to be significantly declined in current students' essays, compared with Lee's(2001). Expressions or vocabularies mainly suitable for spoken colloquial language, however, were observed to be adopted much more frequently and freely in formal written essays. This study additionally investigated the Korean orthography rules on separating words, which were not dealt in Lee's. Violations relating to separating words were found to be seriously grave, which can be considered as a direct negative influence of general writing practice of chatting language, where the rules are routinely ignored chiefly for the economy of space and time.

Large Scale Gap 시험의 전산모사연구

이진성,박정수,이영신,Lee, Jin-Sung,Park, Jung-Su,Lee, Young-Shin 한국군사과학기술학회 2011 한국군사과학기술학회지 Vol.14 No.5

This study describes computational simulation results in 2-dimensional and 3-dimensional space concerning large scale gap test(LSGT) by using commercial hydrocode such as AUTODYN and LS-DYNA to analyze the detonation phenomenons of high explosives. To consider the possibilities of LSGT simulation, we used Lee - Tarver reaction rate model of PBX-9404 and Comp-B which were implemented AUTODYN's material library. Also we have tried the diverse numerical schemes such as Lagrangian, Eulerian and ALE(Arbitary Lagrangian Eulerian), SPH(Smoothed Particle Hydrodynamics) in LSGT simulations. After LSGT simulations, we compared the simulation results with published results to verify the LSGT simulations. According to the LSGT simulations, we have concluded as follows. In 2-dimensional and 3-dimensional space, Lagrangian solver provided the most reliable results based on analysis time and accuracy. When using two hydrocodes in 2-dimensional space, the simulation results are almost same except one explosive model. We have verified the modeling method and simulation results of the LSGT by using the commenrcial hydrocode in this study.

아르헨티나 화장품 용기시장 동향

이진성,Lee, Jin-Seong (사)한국포장협회 2020 包裝界 Vol.323 No.-

대사질환의 응급 처치

이진성,Lee, Jin-Seong 대한유전성대사질환학회 2003 대한유전성대사질환학회지 Vol.3 No.1

흉부 경피적 세침 흡인생검에서 비특이적인 결과의 의미

이진성,송군식,임태환,Lee, Jin-Seong,Song, Gun-Sik,Im, Tae-Hwan 대한영상의학회 2003 대한영상의학회지 Vol.48 No.5

목적: 흉부 경피적 세침 흡인생검(FNAB)에서 비특이적인 결과의 의미와 재검사의 유용성에 대해 알아 보고자 하였다. 대상과 방법: 1997년부터 2001년까지 본원에서 FNAB를 시행한 환자 1845예 중 비특이적인 결과를 보인 531예를 ‘부적합 조직‘과 ‘염증성 세포’,‘괴사조직’, ‘비정형적 세포’로 나누었으며 추적검사하여 최종진단을 통해 분석하였다. 또한 이들 중 임상적 혹은 방사선학적으로 악성종양이 의심되는 경우, 동일부위에서 1개월 이내에 2회 이상 재검사를 시행한 환자 207명을 대상으로 재검사 결과를 첫 번째 검사의 결과와 비교, 분석하였다. 결과: 첫 FNAB의 결과가 비특이적인 531예 중 255예에서 ‘염증성 세포’로 나왔고, 그 중 120예에서 추적검사상 병변의 크기가 감소하여 양성질환으로 판명되었다. 또 50예에서는 ‘비정형적 세포’가 나왔고, 이 중 58%인 29예에서 추후에 악성종양으로 진단되었다. 첫 FNAB의 결과가 비특이적으로 나온 531예에서 임상적 혹은 방사선학적으로 악성 종양이 의심되는 207예에서 재검사를 시행하였고, 이 중 101예에서는 비특이적인 결과를 얻었으며, 106예에서는 특이진단을 내릴 수 있었다. 특히 ‘비정형적 세포’로 나온 30예 중 73%인 22예에서 재검사를 통해 악성종양으로 진단되었다. 결론: FNAB를 시행하여 ‘비정형적 세포’가 나오면 악성 종양으로 진단될 확률이 58%이상으로 높았다. 또한 그 밖의 다른 비특이적인 결과를 얻은 경우에도 악성종양의 가능성을 무시할 수 없으며, 임상적 혹은 방사선학적으로 악성 종양이 의심된다면, FNAB를 반복 시행하는 것이 바람직하며, 재검사가 정확한 진단에 도움이 될 것이다. Purpose: To know what is the meaning of non-diagnostic results of fine needle aspiration biopsy (FNAB) and whether repeated aspiration is needed or not in those situations. Materials and Methods: We reviewed 1845 patients who underwent FNAB from 1997 to 2001. Non-diagnostic results of the first FNAB were divided into four groups: insufficient number of cells, inflammatory cells, necrotic debris and atypical cells. We analyzed final diagnosis of 531 patients who had non-diagnostic results from the first FNAB. Among them, 207 lesions were re-biopsied because of clinical and radiologic suspicion of malignancy. The diagnostic yield of repeated FNAB was analyzed and compared with the results of the first FNAB. Results: Among 255 cases with "inflammatory cells only"results, 120 cases were confirmed benignancy on follow-up. Twenty nine of 50 atypical cells (58%) were malignant on follow-up. One hundred one of 207 repeated FNAB resulted in the non-diagnostic reports, and 106 of 207 repeated FNAB were diagnosed as specific diagnosis. Among thirty lesions showing atypical cells on the repeated FNAB, 22 (73%) were identified as malignant neoplasms. Conclusion: When the specimen of FNAB shows atypical cells, the possibility of malignancy is very high. When the results of FNAB is non-diagnostic in the cases with clinical and radiological suspicion of malignancy, repeated FNAB procedures should be seriously considered and will be helpful for accurate specific diagnosis.

수면과 알코올

이진성,김성곤,정우영,양영희,Lee, Jin-Seong,Kim, Sung-Gon,Jung, Woo-Young,Yang, Young-Hui 대한수면의학회 2013 수면·정신생리 Vol.20 No.2

Alcohol has been used as sedatives historically. The effect of alcohol on sleep is different according to its dose, timing of ingestion, and drinking frequency. Sleep problems may play a role in the development and course of alcohol-related disorders. Insomnia in alcohol-dependent patients is common and early treatment of insomnia may reduce the rate of relapse. Sleep apnea, restless legs syndrome, periodic limbs movement disorder, and altered circadian rhythm may be more frequent in this patients. Management of sleep and alcohol problems is important in treating alcohol-related disorder and sleep disorders, respectively.

바이오피드백을 이용하여 측정한 만성통증 환자의 정신생리적 특징

이진성,강도형,안현주,윤대현,정도언,Lee, Jin-Seong,Kang, Do-Hyung,An, Hyun-Ju,Yoon, Dae-Hyun,Jeong, Do-Un 대한수면의학회 2009 수면·정신생리 Vol.16 No.2

Objectives: Chronic pain is one of the most common experiences of humans and a typical psychophysiological disorder. The aim of this study was to measure the psychophysiological responses in chronic pain patients using a biofeedback system, and to compare them with the results from normal healthy subjects. Methods: Forty two patients with chronic pain (17 males and 25 females, average age $44.67{\pm}11.10$ years) and 42 normal healthy controls (17 males and 25 females, average age $45.17{\pm}10.46$ years) participated in this study. Electromyography (EMG), skin conductance (SC), and skin temperature (ST) were recorded using biofeedback system during the 3 phases (baseline, stress, and recovery) of stress reactivity test, and average values of them were calculated. Difference of values between two groups in each corresponding phase was analyzed with independent t-test, and change of values across phases of stress reactivity test was analyzed with paired t-test (all two-tailed, p<0.05). Results: Compared to normal controls, chronic pain patients had higher value of EMG (baseline: $8.10{\pm}5.97{\mu}V$ vs $4.72{\pm}1.52{\mu}V$, t=-3.56, p<0.01; stress: $11.25{\pm}6.89{\mu}V$ vs $8.49{\pm}4.78{\mu}V$, t=-2.13, p<0.05; recovery: $7.12{\pm}3.77{\mu}V$ vs $4.78{\pm}1.59{\mu}V$, t=-3.70, p<0.01) and SC (baseline: $1.06{\pm}1.0{\mu}S$ vs $0.42{\pm}0.29{\mu}S$, t=-4.0. p<0.01; stress: $1.87{\pm}2.05{\mu}S$ vs $1.03{\pm}0.86{\mu}S$, t=-2.47, p<0.05; recovery: $1.74{\pm}1.77{\mu}S$ vs $0.64{\pm}0.59{\mu}S$, t=-3.8, p<0.01) in all the 3 phases. But, skin temperature comparison did not reveal significant differences in all the 3 phases between two groups. Conclusion: Psychophysiological responses of chronic pain patients in stress reactivity test were different from those of normal healthy controls. These results suggest that sympathetic nervous system is more activated in chronic pain patients. 목 적: 바이오피드백은 정신생리연구에서 중요한 위치에 있으며 정신생리장애 치료에도 유용하다. 만성통증은 매우 흔히 관찰되는 대표적 정신생리장애이다. 이 연구에서는 바이오피드백 기기를 이용한 스트레스 반응 검사로 만성통증 환자와 정상인 간에 생리신호의 특성을 비교하였다. 방 법: 만성통증 환자 42명(남자 17명, 여자 25명, 44.67${\pm}11.10$세)에게 치료 첫째 시간에 바이오피드백 기기를 이용하여 스트레스 반응검사를 하였다. 그 결과를 정상인 42명(남자 17명, 여자 25명, 45.17${\pm}10.46$세)과 비교하였다. 스트레스 반응검사에서는 기저, 스트레스, 그리고 회복 상태에서 각각 전두근 근전도(frontalis electromyography), 피부전도(skin conductance), 피부체온(skin temperature)을 각각 2분씩 측정하여 평균값을 산출하였다. 측정값들의 양 군간 비교에는 독립 t-검정(independent t-test), 각 상태에 따른 측정값의 변화는 대응표본 t-검정(paired-test)로 분석하였다(양측검정, p<0.05). 결 과: 만성 통증 환자는 정상인에 비해 기저, 스트레스, 그리고 회복 상태 모두에서 전두근이 더 긴장해 있었다 (기저: $8.10{\pm}10.465.97{\mu}V$ vs $4.72{\pm}1.52{\mu}V$, t=-3.56, p<0.01; 스트레스: $11.25{\pm}6.89{\mu}V$ vs $8.49{\pm}4.78{\mu}V$, t=-2.13, p<0.05; 회복: $7.12{\pm}3.77{\mu}V$ vs $4.78{\pm}1.59{\mu}V$, t= -3.70, p<0.01). 또한 만성 통증 환자는 세 상태 모두에서 피부전도가 더 잘 되었다(기저: $1.06{\pm}1.0{\mu}S$ vs $0.42{\pm}0.29{\mu}S$, t=-4.0. p<0.01; 스트레스: $1.87{\pm}2.05{\mu}S$ vs $1.03{\pm}0.86{\mu}S$, t=-2.47, p<0.05; 회복: $1.74{\pm}1.77{\mu}S$ vs $0.64{\pm}0.59{\mu}S$, t=-3.8, p<0.01). 그러나 피부체온은 기저, 스트레스, 그리고 회복 상태 모두에서 두 군 사이에 유의한 차이가 없었다(p<0.05). 결 론: 만성 통증 환자는 정상인에 비해 전두근 근전도와 피부전도 측정값이 전반적으로 증가된 소견을 보였다. 이는 통증으로 인하여 교감신경계가 정상인에 비해 자극에 더 예민한 상태에 있음을 시사한다.

원통형 회전 히트파이프의 내부 유동 및 열전달 특성에 관한 연구

이진성,이재준,김철주,Lee, Jin Sung,Lee, Jae Jun,Kim, Chul Ju 대한기계학회 1998 大韓機械學會論文集B Vol.22 No.9

In order to elucidate the operational characteristics of rotating heat pipes, the internal flow patterns and heat transfer performance are investigated. Flow patterns and its transition are studied with various rotational speeds by visualizing flows established inside a rotating tube. To verify those results of analysis, 2 heat pipes of the same geometries but fill charge rates of 7, 30% were manufactured and submitted to operating tests. Comparison of experimental results on heat transfer rate show a fairly good agreement with the analytical results. The analysis reveals that the optimum charge ratio is ranged in 4~7% depending on the quantity of thermal loads. but the heat pipe with 7% of fill charge ratio reached dry-out limitation at heat flux of $q^{{\prime}{\prime}}=6.2kW/m^2$ lower than that of analytic results. Transition of flow regime was well related to the correlation by Semena & Khmelev on transient centrifugal Froude Number Frc. But hysteresis phenomenon was observed in transition of flow regime, when the rotational speed was stepwisely changed in the way to undergo 1 cycle.

Smith-Lemli-Opitz syndrome

이진성,Lee, Jin-Seong 대한유전성대사질환학회 2005 대한유전성대사질환학회지 Vol.5 No.1

SPH에서의 Convex Hull 알고리즘 적용연구

이진성,이영신,Lee, Jin-Sung,Lee, Young-Shin 한국군사과학기술학회 2011 한국군사과학기술학회지 Vol.14 No.2

SPH(Smoothed Particle Hydrodynamics) is a gridless Lagrangian technique that is useful as an alternative numerical analysis method used to analyze high deformation problems as well as astrophysical and cosmological problems. In SPH, all points within the support of the kernel are taken as neighbours. The accuracy of the SHP is highly influenced by the method for choosing neighbours from all particle points considered. Typically a linked-list method or tree search method has been used as an effective tool because of its conceptual simplicity, but these methods have some liability in anisotropy situations. In this study, convex hull algorithm is presented as an improved method to eliminate this artifact. A convex hull is the smallest convex set that contains a certain set of points or a polygon. The selected candidate neighbours set are mapped into the new space by an inverse square mapping, and extract a convex hull. The neighbours are selected from the shell of the convex hull. These algorithms are proved by Fortran programs. The programs are expected to use as a searching algorithm in the future SPH program.