결정질 실리콘 태양전지의 전면 전극의 패턴에 따른 전류 밀도 및 특성 저항 변화에 대한 영향과 효율 변화

정수정,신승현,최동진,배수현,강윤묵,이해석,김동환,Jeong, Sujeong,Shin, Seunghyun,Choi, Dongjin,Bae, Soohyun,Kang, Yoonmook,Lee, Hae-seok,Kim, Donghwan 한국재료학회 2017 한국재료학회지 Vol.27 No.10

In commercial solar cells, the pattern of the front electrode is critical to effectively assemble the photo generated current. The power loss in solar cells caused by the front electrode was categorized as four types. First, losses due to the metallic resistance of the electrode. Second, losses due to the contact resistance of the electrode and emitter. Third, losses due to the emitter resistance when current flows through the emitter. Fourth, losses due to the shading effect of the front metal electrode, which has a high reflectance. In this paper, optimizing the number of finger on a $4{\times}4$ solar cell is demonstrated with known theory. We compared the short circuit current density and fill factor to evaluate the power loss from the front metal contact calculation result. By experiment, the short circuit current density($J_{sc}$), taken in each pattern as 37.61, 37.53, and $37.38mA/cm^2$ decreased as the number of fingers increased. The fill factor(FF), measured in each pattern as 0.7745, 0.7782 and 0.7843 increased as number of fingers increased. The results suggested that the efficiency(Eff) was measured in each pattern as 17.51, 17.81, and 17.84 %. Throughout this study, the short-circuit current densities($J_{sc}$) and fill factor(FF) varied according to the number of fingers in the front metal pattern. The effects on the efficiency of the two factors were also investigated.

보 건설이 주변지역 지하수 흐름계에 미치는 영향

정수정,구민호,Jeong, Soo-Jeong,Koo, Min-Ho 한국지하수토양환경학회 2012 지하수토양환경 Vol.17 No.3

Visual MODFLOW, a three dimensional groundwater flow model, was used to analyze effects of a weir construction in an alluvial stream on the nearby groundwater flow system. A hypothetical conceptual model was developed to investigate how the groundwater level and the water budget could change after a weir construction depending on the location of tributary streams. A site example, dealing with the Juksan weir installed in the Yeongsan River, was also demonstrated to predict the effects of the weir construction. Model results show that impacts of a weir construction on the groundwater flow system greatly vary depending on how far a tributary is located and whether it is located downstream or upstream from the weir. Therefore, consideration of the location of tributaries in planning the location of a weir could effectively minimize the impacts of a weir construction on the groundwater flow system. It is also demonstrated that model results are highly dependent upon how the model is dealing with small tributaries and agricultural drainage channels, which can be easily found nearby the main streams, acting as major water bodies for groundwater discharge. The model for the Juksan area shows that the weir construction will change the direction of groundwater flow in some areas, leading to changes of groundwater quality and interaction of the Yeongsan River to the aquifer from a gaining to a losing stream. The model also predicted the areas where rise of groundwater level caused by the Juksan weir could adversely affect plant growth, and thereby suggested installing new drainage channels as a countermeasure to drawdown the groundwater level.

스마트폰의 교육용 어플리케이션 동향분석 및 발전방향 연구

정수정,임걸,고유정,심현애,김경연,Jeong, Su-Jeong,Lim, Keol,Ko, Yu-Jung,Sim, Hyun-Ae,Kim, Kyung-Yeon 한국디지털콘텐츠학회 2010 한국디지털콘텐츠학회논문지 Vol.11 No.2

This study analyzed educational applications in smartphones with some criteria seeking to apply online learning characteristics to smartphones. For the analysis, 85 educational applications were selected and they were classified by types of educational contents, interactions, and the combination of the educational contents and interactions. As a result, drill-and-practice and tool types of contents ranked high, and there found to be few simulation and problem solving types. In regard to interaction types, almost all of the applications had interactions only between contents and learners, which meant little active communications when using applications. Therefore, enhanced interactions and communications among learners using the social network service platform were required in order to use educational applications in a more effective way.

마이크로/나노 폴리머 구조물의 기계적 물성 측정 기술

정수정,김재현,이학주,Jeong, Su-Jeong,Kim, Jae-Hyeon,Lee, Hak-Ju 재료연구소 2005 機械와 材料 Vol.17 No.4

Light I-V 곡선을 이용한 결정질 태양전지의 이상계수와 직렬 저항 특성 분석

정수정,김수민,강윤묵,이해석,김동환,Jeong, Sujeong,Kim, Soo Min,Kang, Yoonmook,Lee, Hae-seok,Kim, Donghwan 한국재료학회 2016 한국재료학회지 Vol.26 No.8

With the increase in installed solar energy capacity, comparison and analysis of the physical property values of solar cells are becoming increasingly important for production. Therefore, research on determining the physical characteristic values of solar cells is being actively pursued. In this study, a diode equation, which is commonly used to describe the I-V behavior and determine the electrical characteristic values of solar cells, was applied. Using this method, it is possible to determine the diode ideality factor (n) and series resistance ($R_s$) based on light I-V measurements. Thus, using a commercial screen-printed solar cell and an interdigitated back-contact solar cell, we determined the ideality factor (n) and series resistance ($R_s$) with a modified diode equation method for the light I-V curves. We also used the sun-shade method to determine the ideality factor (n) and series resistance ($R_s$) of the samples. The values determined using the two methods were similar. However, given the error in the sun-shade method, the diode equation is considered more useful than the sun-shade method for analyzing the electrical characteristics because it determines the ideality factor (n) and series resistance ($R_s$) based on the light I-V curves.

고로쇠 수액의 유출시기별 이화학적 특성과 영양성분

정수정(Su Jeong Jeong),이창현(Chang Hyeon Lee),김현영(Hyun Young Kim),이상훈(Sang Hoon Lee),황인국(In Guk Hwang),신창섭(Chang Seob Shin),박의석(Eui Seok Park),이준수(Junsoo Lee),정헌상(Heon Sang Jeong) 한국식품영양과학회 2011 한국식품영양과학회지 Vol.40 No.10

고로쇠수액의 채취시기별 이화학적 특성 및 영양성분을 분석하였다. 고로쇠수액의 갈변도 및 탁도는 채취시기가 늦어질수록 증가하는 경향을 보였으며, pH 및 총산도는 큰 차이가 없었다. 유기산은 citric acid 및 malic acid가 검출되었으며, citric acid는채취시기가 늦어질수록 감소하는 경향을 보였고 malic acid는 증가하였다. 유리당은 sucrose와fructose 및 glucose가 검출되었으며, sucrose는 채취시기가 늦어질수록 감소한 반면, fructose는 증가하였고 glucose는 채취시기 후반기에만 검출되었다. 조단백질과 조회분은 채취 초중반기에는 변화가 없었으나, 후반기에 많은 증가를 보였다. 무기성분은 Ca, Cu, Fe, K, Mg 및 Mn 등이 검출되었으며, K, Mg 및 Fe는 채취기시가 늦어질수록 증가하였다. 이상의 결과로부터 채취시기 후반기에 채취되는 고로쇠수액은 탁도의 증가로 인하여 음용하기 어렵지만, 조단백질, 유기산, 무기성분 등의 증가로 영양적으로 우수할 것으로 판단되므로 적절한 가공방법을 이용하여 탁도를 제어한다면 이용률 향상에 도움이 될 것으로 판단된다. This study evaluated the physicochemical characteristics and nutritional components of Goroshoe (Ace rmono Max.) sap related with collection periods. The changes of browning index, turbidity, pH, total acidity, organic acids, free sugar, crude protein, crude ash, and minerals were investigated. Browning index and turbidity were slightly increased, while pH and total acidity were not changed as collection periods increased. Citric acid decreased slightly from 0.081 to 0.045 mg/mL at middle collection periods. Malic acid also decreased from 0.494 to 0.416 mg/mL at middle collection periods but then afterward increased to 0.674 mg/mL as collection periods increased. Sucrose decreased from 1.759 to 1.000%, while fructose increased from 0.023 to 0.044% as collection periods increased. Crude protein increased remarkably from 0.80 to 17.49 mg% as collection periods increased. Crude ash decreased slightly from 0.04 to 0.03% at middle collection periods, and then increased afterward to 0.06% as collection periods increased. Potassium increased from 13.43 to 49.75 mg/L as collection periods increased. These results indicate that the useful components of Goroshoe sap increased with increasing collection periods, but turbidity could be reduced.

흙놀이 활동이 유아의 자연친화적 태도와 감성에 미치는 영향

정수정(Su Jeong Jeong),황해익(Hae Ik Hwang) 한국아동학회 2009 아동학회지 Vol.30 No.6

지역아동센터 이용아동의 초등학교 시기 자아존중감 발달궤적이 공동체 의식에 미치는 영향

정수정(Su-Jeong Jeong),김소은(So Eun Kim),정익중(Ick-Joong Chung) 한국아동학회 2018 아동학회지 Vol.39 No.6

Objectives: This study aimed to investigate the effect of the developmental trajectory of children’s self-esteem on their sense of community. Specifically, We explored how changes in self-esteem might have a structural relationship with children’s sense of community. Methods: Latent growth curve models were utilized on data extracted from the 1st to 3rd waves of the Community Child Center Panel Survey conducted from 2014 to 2016. Results: The developmental trajectory of self-esteem of children in community child centers increased over time, and it had a positive effect on their sense of community. Conclusions: We discuss the implications of this study for facilitating the development of children in community child centers.

독어의 고유명사에 대한 연구

정수정 ( Jeong Su Jeong ) 서울대학교 독일어문화권연구소 2008 독일어문화권연구 Vol.17 No.-

In dieser Arbeit wurde versucht, eine Klassifikation von deutschen Eigennnamen vorzustellen und diese unter morphosyntaktischem und semantischem Aspekt zu untersuchen. Außerdem wurde angestrebt, die Methoden zu erfassen, wie die Eigennamen von einer Ausgangssprache in eine Zielsprache ubersetzt werden konnen. Ein Eigenname ist ein Sprachzeichen, das der Unterscheidung des Namentragers von anderen dient, die ihm in gewisser Weise nahe stehen. Der Eigenname macht somit den Namentrager zu etwas Einmaligem und Individuellem. Bei der Klassifizierung sowie bei der Beschreibung der einzelnen Klassen von Eigennamen stoßt man nicht selten auf Schwierigkeiten, wobei ein Problem darin besteht, standhaltbare Kriterien dafur zu erstellen. Traditionellerweise wurden Eigennamen in drei Gruppen untergliedert, und zwar Antonymen, Toponymen und sonstigen Eigennamen. Was die Semantik der Eigennamen angeht, so wurden zwei kontroverse Ansichten vertreten, je nachdem, ob ein Eigenname eine Bedeutung hat. Nach Mill hat ein Eigenname keine Bedeutung. Er sei ein bedeutungsleeres Etikett, das keine Eigenschaften des Objekts mitbezeichnet. Dagegen vertritt Jesperson den Standpunkt, dass ein Eigenname ein Maximum an Bedeutung hat. Nach Hansack steht ein Eigenname nicht fur einen Gegestand, sondern eine Informationsmenge uber einen Gegenstand. Die Bedeutung ist bei Hansack nunmehr die Gesamtheit dessen, was uber ein Wort indiziert wird. Die Ubersetzung von Eigennamen kann durch die pragmatischen, kulturellen und textuellen Faktoren bestimmt. Als Grundprinzip dafur gilt, dass man beim Ubersetzen der Eigennamen auf textuelle pragmatische Adaquatheit in der Zielsprache hin uberpruft. Eigennamen konnen beim Ubersetzen mithilfe einer Modifizierung sowie einer expliziten Erklarung erganzt werden.

독일 기본법에 쓰인 조건문에 대하여 - wenn-조건문과 V1-조건문을 중심으로

정수정 ( Jeong Su-jeong ) 한국독어독문학회 2017 獨逸文學 Vol.58 No.2

법조문은 행위규범이자 특정한 행위에 대한 강제 규범으로 어떠한 조건 하에서 어떠한 행위가 해당 법 규범에 적용되는지를 적시한다. 이러한 법률텍스트에는 언어적으로 특정한 표현 내지는 구문들이 집약적으로 사용되고 있다. 통사론적인 관점에서 보았을 때 독일의 법조문에는 수동문, 조건문과 주제화 구문 그리고 부정문도 매우 빈도 높게 발견된다. 특히, 조건문은 선행절의 명제가 후행절의 명제 실현의 전제나 근거가 되는관계를 나타내는 수단으로서 어떠한 조건 하에서 어떤 행위가 해당 법 규범에 적용되는지를 적시하는 법 개념의 기술에 매우 적합한 표현수단이다. 이 논문에서는 법조문의 주요 구문 중의 하나인 조건문을 언어학적 이론을 토대로 고찰하고자 한다. 특히 독일 기본법에 나타나는 다양한 유형의 조건문 중에서 wenn-조건문과 V1-조건문의 구조와 특징 및 이 두 구문의 쓰임의 공통점과 차이점을 분석할 것이다. 나아가 wenn-조건문과 V1-조건문의 언어학적 논의 결과가 독일어 법조항 기술에 적용가능한지 검토한 후, 각 구문과 관련된 법률 기술상의 전략을 파악해 보고자 한다. In der vorliegenden Arbeit wird versucht, anhand des deutschen Grundgesetzes die Verwendungen von Konditionalen im Deutschen zu untersuchen, wobei das Hauptaugemmerk vor allem auf der wenn-Konditionalen sowie der V1-Konditionalen liegt. Traditionell wurde angenommen, dass wenn-Konditionale und V1-Konditionale syntaktisch aquivalent seien und V1-Gefuge bloß formale Varianten von wenn-Gefugen seien, und dass ihnen traditionell die gleiche Gefugestruktur zugewiesen wird, wie wenn-Gefugen, wobei diese den Maßstab abgeben Dieser traditionellen Auffassung steht jedoch die Idee von Reis/Wollstein(2010) entgegen, dass wenn-Satze und V1-Satze verschieden in der semantischen sowie in der syntaktischen Distribution seien. Wenn-Satze verhalten sich integriert, wahrend V1-Satze Merkmale syntaktischer und pragmatischer Unintegriertheit aufweisen, was darauf hindeutet, dass beide strukturell differieren. Die V1-Protasis in der linksperipheren Stellung sei nicht, wie traditionell behauptet, in ihren Bezugssatz eingebettet, sondern sie sei mit diesem quasi-parataktisch verknupft bzw. unintegriert vorgeschaltet. Diese Argumentation wurde dazu fuhren, dass die Apodosis in den V1-Konditionalgefugen ein V2-Satz mit Vorfeld- Ellipse ist. Bei der Betrachtung des Grundgesetzes im Deutschen stellt sich heraus, dass wenn-Konditionale und V1-Konditionale in unterschiedlichen Kontexten auftreten und sich somit so verschieden verhalten, wie Reis/Wollstein(2010) angenommen haben. V1-Konditionalgefuge erscheinen im Grundgestz auf bestimmte Konstellationen beschrankt verwendet worden zu sein, in denen die Wahrheit der Apodosis-Proposition von der Wahrheit der Protasis-Proposition absolut abhangt und daruber hinaus der Wahrheitswert des V1-Protasis in der realen Welt offen ist. Im Unterschied dazu steht bei wenn- Konditionalen ein anderes Verhaltnis zwischen der Protasis-Proposition und Apodosis-Proposition im Vordergrund, in dem fur das Inkrafttreten bzw. die Rechtfertigung des Apodosis die Protasis als Begrundung gilt. Außerdem spricht die Analyse der betreffenden Bezugssatze bzw. der Apodosis- Proposition im Grundgestz dafur, dass es sich bei der Apodosis in den V1-Gefugen um V2-Deklarative mit Vorfeld-Ellipse von so handeln konnte.