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실시간 분산 시스템의 객체지향 소프트웨어 시험을 위한 정형모델
송영기(Young Kee Song),이재섭(Jae Sup Lee),이형호(Hyeong Ho Lee),윤병남(Byeong Nam Yoon),David Kung(David Kung),Pei Hsia(Pei Hsia) 한국정보과학회 1995 정보과학회 컴퓨팅의 실제 논문지 Vol.1 No.2
본 논문에서는 실시간 분산 시스템의 객체지향 소프트웨어 시험을 위한 확장된 정형 시험 모델을 제안한다. 제안된 모델은 객체 관계 다이어그램, 객체 상태 다이어그램 및 객체내의 블럭흐름 다이어그램을 기반으로 하고 있으며, 동기화, 통신 형태, 시간의 제약성 등 실시간 분산 시스템의 주요 개념들을 반영하여 확장되고 있다. 제안된 정형 모델로부터 객체지향 소프트웨어 시험을 위한 방법과 도구들을 제시하고 일부 도구의 프로토타입을 구현하여 봄으로써 모델의 적용 가능성을 확인한 결과를 기술한다. In this paper, we propose an extended formal model for testing object -oriented real-time distributed systems. This model is based on Object Relation Diagram, Object State Diagram, and Block Branch Diagram, and extended to add the concept of real-time distributed system, such as, synchronization, communication type, and timing constraints. We suggest methods and utility tools for object-oriented software testing from the proposed formal model, and describe the validation result to show the applicability of the model by prototyping some of them.
Sun, Ying,Chien, Shang-Chieh,Yip, Hin-Lap,Zhang, Yong,Chen, Kung-Shih,Zeigler, David F.,Chen, Fang-Chung,Lin, Baoping,Jen, Alex K.-Y. Royal Society of Chemistry 2011 Journal of materials chemistry Vol.21 No.35
<P>Two new semiconducting polymers based on indacenodithiophene and thiadiazolo[3,4-<I>c</I>]pyridine units were synthesized <I>via</I> Stille coupling polymerization. The polymers, PIDTPyT and PIDTDTPyT, exhibited main absorption bands in the range of 550–800 nm while their absorption maxima were located at around 700 nm in films. With two additional thiophene spacers, PIDTDTPyT showed a broader absorption band but a 20 nm blue-shifted maximum peak compared to that of PIDTPyT. Both of the polymers possess low bandgaps (∼1.6 eV) and deep energy levels for both the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO). Organic field-effect transistors (OFETs) device measurements indicate that PIDTPyT and PIDTDTPyT have high hole carrier mobilities of 0.066 and 0.045 cm<SUP>2</SUP> V<SUP>−1</SUP> s<SUP>−1</SUP>, respectively, with the on/off ratio on the order of 10<SUP>6</SUP>. Bulk heterojunction photovoltaic devices consisting of the copolymers and PC<SUB>71</SUB>BM gave power conversion efficiencies (PCE) as high as 3.91% with broadband photo-response in the range of 300–800 nm. The relationships between the photovoltaic performance and film morphology, energy levels, hole mobilities are discussed.</P> <P>Graphic Abstract</P><P>Low bandgap regiorandom polymers based on indacenodithiophene and thiadiazolo[3,4-<I>c</I>]pyridine units showed excellent OFET hole mobilities and promising photovoltaic device performance as high as 3.91%. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c1jm11564b'> </P>
Zhang, Yong,Zou, Jingyu,Yip, Hin-Lap,Chen, Kung-Shih,Zeigler, David F.,Sun, Ying,Jen, Alex K.-Y. American Chemical Society 2011 Chemistry of materials Vol.23 No.9
<P>Two new low-band-gap conjugated polymers based on the polymerization between indacenodithiophene and 2,3-diphenylquinoxaline or phenanthrenequinoxaline were synthesized. Due to the fused phenanthrenequinoxaline unit, the polymer (PIDT-phanQ) possesses better planarity than PIDT-diphQ, resulting in an improved hole mobility in organic field-effect transistors and power conversion efficiency in polymer solar cells.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/cmatex/2011/cmatex.2011.23.issue-9/cm200316s/production/images/medium/cm-2011-00316s_0006.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/cm200316s'>ACS Electronic Supporting Info</A></P>
Cho, Namchul,Yip, Hin-Lap,Hau, Steven K.,Chen, Kung-Shih,Kim, Tae-Wook,Davies, Joshua A.,Zeigler, David F.,Jen, Alex K.-Y. Royal Society of Chemistry 2011 Journal of materials chemistry Vol.21 No.19
<P>A novel [6,6]-phenyl-C<SUB>61</SUB>-butyric acid methyl styryl ester (PCBM-S) was synthesized and employed as an electron transporting interfacial layer for bulk heterojunction polymer solar cells with an inverted device configuration. After the deposition of PCBM-S film from solution, the styryl groups of PCBM-S were polymerized by post-thermal treatment to form a robust film which is resistive to common organic solvents. This allows the solution processing of upper bulk heterojunction film without eroding the PCBM-S layer. Additionally, the PCBM-S was n-doped with decamethylcobaltocene (DMC) to increase the conductivity of the film, which resulted in a significantly improved power conversion efficiency from 1.24% to 2.33%. The improved device performance is due to the decrease of series resistance and improved electron extraction property of the n-doped PCBM-S film.</P> <P>Graphic Abstract</P><P>Electrically doped fullerene-based interfacial layer can improve the performance of polymer solar cells with inverted configuration. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c1jm10214a'> </P>