Analysis of Charge Injection and Contact Resistance as a Function of Electrode Surface Treatment in Ambipolar Polymer Transistors

이선정,김채원,Seok-Heon Jung,Riccardo Di Pietro,Jin-Kyun Lee,JiyoungKim,김미소,Mi Jung Lee 대한금속·재료학회 2018 ELECTRONIC MATERIALS LETTERS Vol.14 No.1

Ambipolar organic field-effect transistors (OFETs) have both of holeand electron enhancements in charge transport. The characteristics ofconjugated diketopyrrolopyrrole ambipolar OFETs depend on themetal-contact surface treatment for charge injection. To investigate thecharge-injection characteristics of ambipolar transistors, these devicesare processed via various types of self-assembled monolayer treatmentsand annealing. We conclude that treatment by the self-assembledmonolayer 1-decanethiol gives the best enhancement of electron chargeinjection at both 100 and 300 °C annealing temperature. In addition, the contact resistance is calculated by using two methods:One is the gated four-point probe (gFPP) method that gives the voltage drop between channels, and the other is the simultaneouscontact resistance extraction method, which extracts the contact resistance from the general transfer curve. We confirm that thegFPP method and the simultaneous extraction method give similar contact resistance, which means that we can extract contactresistance from the general transfer curve without any special contact pattern. Based on these characteristics of ambipolar p- andn-type transistors, we fabricate inverter devices with only one active layer.

한방병원에 내원한 부비동염 환아의 연령 분석 및 임상 유형 분류

이선정,강경하,박은정,Lee, Sun Jung,Kang, Kyung Ha,Park, Eun Jeong 대한한방소아과학회 2016 대한한방소아과학회지 Vol.30 No.1

Objectives The purpose of this study is to analyze sinusitis patients who visited the department of pediatrics, OO Korean medicine hospital by using their age and to classify the clinical type by Korean medical theory. Methods The study was conducted based on 178 cases that consisted of sinusitis patients (from 1 to 15 years old) who visited OO Korean medicine hospital from March 2014 to March 2015. We analyzed the age of patients and classified them by the clinical type by reviewing patient's charts. After that, we compared the results with the results of previous studies. Results and Conclusions 178 Patients were studied. 2-years-age group was 19.7% of the study group which was higher than that of previous studies. The Lung-Kidney Yin Deficiency (肺腎陰虛) group was 33.1%, Wind-Heat (風熱) group was 29.8% and the Wind-Cold (風寒) group 18.5%, Spleen-Lung Qi Deficiency (脾肺氣虛) group was 15.7% and the Heart-Spleen Qi Deficiency (心脾氣虛) group was 2.8% of the study group. Children are full of Yang but lack of Yin (陽常有餘陰常不足) so they easily transform into heat and fire (化熱化火). The patients who had sinusitis were most likely to suffer from the common cold for more than a week, once a month. 45.1% of the people from the study group was suffered from common cold more than a week, and 43.8% of the people got common cold once a months. About 21.6 % and 18.3% of the people got common cold twice a month and once every 2 months, respectively. The remaining 15.7% got cold during the season changes.

곽향정기산가미방(藿香正氣散加味方) 투여로 호전된 아데노이드 비대 치험 1례

이선정,박은정,Lee, Sun Jung,Park, Eun Jeong 대한한방소아과학회 2016 대한한방소아과학회지 Vol.30 No.4

Objectives The purpose of this case study is to report the effect of Gwakyangjeonggisangamibang on adenoidal hypertrophy. Methods The subject was a child with adenoidal hypertrophy. This patient was treated with oriental herbal medicine. The improvement was observed by subjective symptoms and A/N ratio, and OSA-18 survey was performed to compare quality of life before and after the treatment. Results After the treatment, the symptoms of adenoidal hypertrophy were relieved. A/N ratio of this child went down from 0.9 to 0.65. Also, the significant OSA-18 score change demonstrated that the patient's quality of life was improved. Conclusions This study showed that a conservative treatment using herbal medicine can be an effective choice for adenoidal hypertrophy before deciding to performing an adenoidectomy.

한국어최적상호명코퍼스설계에관한연구

이선정,Lee, Sun-Jung 한국컴퓨터산업학회 2004 컴퓨터産業敎育學會論文誌 Vol.5 No.5

In this paper, we obtain an optimal corpus that can represent its characteristics very well from the baseline corpus which consists of unique 1,566,943 names among company names in a directory assistance serve (114). Two kinds of optimal solutions ared considered to obtain the optimal corpus. The first solution is to find phonetically balanced corpus (PBC), which are the minimum set including all possible triphones in the baseline corpus. The second solution is to find the phonetically distributed corpus (PDC), which is a minimum set representing the frequency characteristics of triphones in the baseline corpus. We can obtain 8,699 words as the PBC and 16,783 words (similarity measure R = 0.92) as PDC, respectively. These corpora can be used for the development of speech recognition and speech synthesis. 본 논문에서는 114 안내시스템에 저장되어있는 서로 중복되어 있지 않는 1,566,943개의 상호명 코퍼스에서 이 코퍼스의 특징을 가장 잘 표현 해 줄 수 있는 최적 코퍼스를 설계하였다. 최적 코퍼스를 구하기 위해 두 단계의 방식을 택한다. 일 단계는 기본코퍼스에 존재하는 트라이폰이 모두 나타내는 최소의 단어 셋을 구하는 최적 음소균형 코퍼스 셋이고 다음 단계는 기본코퍼스에 존재하는 트라이폰의 빈번도를 고려하는 최소의 단어 셋을 구하는 음소 분포코퍼스 셋을 설계하였다. 실험 결과 최적 음소 균형 셋으로 8,699단어가 선정되었으며 최적 음소 분포 균형 셋으로 16,783 단어가 선정되었다. 이러한 최적 코퍼스는 음성 및 합성 시스템을 위한 음성데이터베이스를 구축 할 때 이용된다.

육미지황탕 가미방 투여로 호전된 소아 재발성 혈뇨 1례

이선정,박은정,Lee, Sun Jung,Park, Eun Jung 대한한방소아과학회 2017 대한한방소아과학회지 Vol.31 No.2

Objectives The purpose of this case study is to report the effect of Yukmijihwangtang-gamibang on recurrent hematuria in childhood. Methods The subject was a male child with macroscopic hematuria. This patient was only treated with oriental herbal medicine. The improvement was observed by subjective symptoms and routine urinalysis. Results After the treatment with Yukmijihwangtang-gamibang, the symptoms of macroscopic hematuria were relieved. The occult blood test was negative as well. The number of red blood cells in urine was within the normal range. He was less tired but hematuria did not recur even after intense exercise. Conclusions This study showed that Korean medical treatment with using herbal medicine such as Yukmijihwangtanggamibang can be an effective treatment option for asymptomatic macroscopic hematuria.

활성화 확산 모형을 이용한 아이콘 평가

이선정(Sun Jung Lee),명노해(Rohae Myung) 대한인간공학회 2007 大韓人間工學會誌 Vol.26 No.4

Icon conveys symbolic information which they have become ubiquitous as main element of GUI. However, users often cannot intuitively understand its functional meanings. Icon has to be designed for users to easily understand functional meanings. In order to evaluate icon, the spreading activation model can be used to effectively understand the process of information retrieval. In asymmetric spreading activation model is that in the two nodes the degree of spreading activation is different according to direction. Thus, asymmetric spreading activation theory was performed evaluating the strength of association when users see visual image to associate their verbal meaning (visual image - verbal meaning pair) and users see verbal meaning to associate their visual image (verbal meaning - visual image pair). According to the direction, this study hypothesizes that the well-designed icons have symmetric relationship rather than asymmetric relationship between the two pairs. The strength of association is measured through the reaction time and the accuracy rate. In performing SAT (spreading activation test), the ten icons were selected as word processing software icons. After first SAT, newly designed icons were developed based on Korean mental model, and second SAT was conducted using them. The results showed that the accuracy rate of newly designed icon has been improved. Also there is significant difference of reaction time between current icons and newly designed icons. Well-designed icon is confirmed that the strength of association relationship arises symmetrically rather than asymmetrically between the two pairs. User centered icons could be designed by improving the strength of association between the two pairs. Asymmetric SAT evaluates the strength of the association between the visual image and the verbal meanings to contribute to the development of icon which it related to human's association structure.

복지증세태도에 대한 소득수준별 조세불공정인식의 차등적 효과

이선정(Lee, Sunjung),김정석(Kim, Cheong-Seok) 한국사회학회 2017 韓國社會學 Vol.51 No.3

임금근로자들의 소득은 투명하게 파악되고 징세 또한 엄격히 이루어진다. 현재 한국사회에서 임금근로자들의 조세불공정성에 대한 인식은 높은 것으로 알려져 있으며, 이는 증세에 대한 거부감으로 이어질 수 있다고 논의된다. 본 연구는 임금근로자들의 소득수준, 조세불공정인식, 복지증세태도 등이 어떻게 연결되어 있는가를 살피고 있다. 특히 소득수준과 조세불공정인식이 결합하여 복지증세태도에 영향을 미치는지에 주목하고 있다. 이를 규명하기 위해 본 연구는 제8차 한국복지패널(2013년도) 부가조사인 ‘복지인식조사’ 자료를 활용하여 30~55세 임금근로자(n=1,521)에 대한 확장형 회귀분석을 실시하였다. 그 결과, 소득수준과 조세불공정인식간의 상호작용효과가 발견되었다. 이에 따르면 조세불공정인식이 높을수록 복지증세에 더 우호적이며 이러한 관계는 저소득층에서 뚜렷하게 나타났다. 따라서 한국 임금근로자의 경우 조세불공정인식이 복지증세에 대해 비판적이거나 회의적일 것이라는 논의는 그 경험적 근거가 취약하다고 볼 수 있다. 한편, 조세불공정인식 수준에 따른 소득수준의 효과도 흥미롭다. 분석에 따르면 조세불공정인식이 낮은 측에서는 고소득이, 그리고 조세불공정인식이 높은 측에서는 저소득이 복지증세에 우호적이다. 이는 조세불공정인식이 완화 혹은 해소되었을 경우, 고임금 근로자들이 저임금 근로자들에 비해 복지증세에 더 우호적일 수 있음을 시사한다. In general, the income of a employee is clearly identified and strictly taxed. In Korea, it is known that wage workers highly perceive the taxation unfair. Such view is argued to result in refusing tax increase. This study observes the interrelated factors such as income level, perception of taxation inequity and attitude toward tax increase for social welfare of those paid employees. In particular, the study focuses on whether and how the combination of income level and the perception of taxation inequity influence the attitude toward tax increase. The study, utilizing the data set from the 8th Korea Welfare Panel Survey with attritional survey on perception of social welfare, conducted an analysis on paid workers aged 30–55. The nested model analysis reveals the interaction effect between the income level and the perception of taxation inequity. On the contrary to the expectation, the perception of taxation inequity is positively related to the favorable attitude toward tax increase for social welfare. Furthermore, such relationship is more distinct for lower income group than those with the higher income level. As a result, the argument that the perception of taxation inequity will lead to the refusal of tax increase for social welfare does not seem to have solid ground. In addition, the effect of income level by the degree of perception on taxation inequity of those workers gives interesting results. Among those who have lower level of perception of taxation inequity, those with high income are more likely to favor in tax increase for social welfare than their counterparts. This finding suggests that, once the perception of tax inequity gets resolved or decreased, highly paid workers may be more willing to advocate tax increase for social welfare than the lower income workers.

『안티고네』독서를 통한 라캉의 윤리적 주체에 대한 고찰

이선정(Seon-Jeong Lee) 경북대학교 인문학술원 2011 人文 科學 Vol.23 No.-

This study aims to explore the ethical subject of psychoanalysis from the viewpoint of Lacanian psychoanalytic theory, through a reading of Sophocles"s Antigone. In the analysis of Antigone, Lacan elevates Antigone to a tragic hero and even to the ethical model of psychoanalysis itself. Antigone"s desire is pure desire for Polyneices sublimated to the dignity of das Ding, and desire, as such, is connected to the death drive. Meanwhile, Lacan proposes that it is her sublime beauty that both fascinates us and startles us. In her unbearable splendor, she moves us and gives catharsis to us as an ethical model of psychoanalysis and as an example of a "subject between desire and jouissance," who puts the death drive into action by pushing her desire to the limit. As the lessons from Antigone tell us, the ultimate aim of the death drive is not the subject"s biological death but the beginning of a new desire, namely creation ex nihilo, and a person can become a mature and ethical subject by not giving way on desire and also through following it thoroughly to become aware of the drive itself. In conclusion, the life of the ethical subject occurs in the pursuit of a healthy encounter with the real, while maintaining the close bond with the symbolic by constructing a non-destructive relationship with das Ding in the form of sublimation, and in that sense the Lacanian subject is located between desire and jouissance.

「하존」 명문 고석 및 전제연구

이선정 ( Lee Seon Jeong ) 한국중국언어학회 2002 중국언어연구 Vol.15 No.-

교육비지출이 중년기 남성가구주의 우울도에 미치는 영향: 소득수준의 차등적 효과를 중심으로

이선정 ( Sun-jeong Lee ),김정석 ( Cheong-seok Kim ) 한국소비자학회 2017 소비자학연구 Vol.28 No.2

한국사회에서 자녀교육비는 가구지출의 상당 부분을 차지하고 있으며 그 부모에게 큰 경제적 부담이 된다. 이러한 부담은 부모의 정신건강에 부정적인 영향을 미칠 가능성이 크다. 이 논문은 중년층 남성가구주를 대상으로 자녀교육비가 우울에 어떤 영향을 미치는지 그리고 이러한 영향은 소득수준에 따라 차등적인지를 분석하고자 한다. 중년층 남성가구주가 대부분 해당 가구의 주요 소득원인 상황에서 교육비지출의 효과는 이들 집단에서 민감하게 나타날 가능성이 높다. 이를 확인하기 위해 한국복지패널 제10차 자료(n=6,914) 중 40대와 50대 남성가구주(n=1,485)를 대상으로 확장형회귀모형을 실시하였다. 분석결과에 따르면 가구지출에서 차지하는 교육비 비중과 소득 하위 1분위(하위소득 20%)의 효과가 확인되었다. 또한 교육비 비중의 부정적인 효과는 하위소득층에서 더 크게 나타났다. 따라서 중년층 남성가구주들의 우울수준에 대한 교육비 비중의 효과는 소득 수준에 따라 차등적임이 확인되었다. Expense for education of children, taking significant proportion of the household expenditure, has become a great deal of financial burden for their parents in Korea. Such burden may have detrimental effect on the psychological well being of the parents. This study examines whether educational expenses for children is related to depression of their parents and how this relationship differs by the level of household income. In doing so, the study focuses on the depression of male household heads in middle age since they usually take the main responsibility for income in Korea and have children in school. Utilizing the data from 10^th Korean Welfare Panel Survey, the study analyzed male household head (n=1,485) in their 40s and 50s. The regression models and its comparison reveals that the proportion of expense for education has a positive effect on the scores of CED. Furthermore, the effect is stronger for lower level of income. The differential effect of educational expenses by income level suggests that the parents with low income may experience much more intensive stress for children’s education than their counterparts.