Effect of Halogen-terminated Additives on the Performance and the Nanostructure of All-polymer Solar Cells

박순형,남성호,서주역,정재훈,이수영,김화정,김영규 한국물리학회 2015 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.66 No.3

Here, we report the influence of halogen-terminated additives on the performance and the nanostructureof all-polymer solar cells that are made with bulk heterojunction (BHJ) films of poly(3-hexylthiophene) (P3HT) (as an electron donor) and poly(9,9-dioctylfluorene-co-benzothiadiazole)(F8BT) (as an electron acceptor). Diiodooctane (DIO) and dibromooctane (DBO) were employedas additives in order to compare the effect of different halogen groups (bromine and iodine). Resultsshowed that the power conversion efficiency of devices was slightly (15%) improved by usingadditives due to the increased open-circuit voltage and fill factor. The synchrotron radiation grazingincidenceX-ray diffraction (GIXD) measurements disclosed that the performance improvement wasclosely related to the relatively well-evolved nanostructures in the P3HT:F8BT films caused by theadditives.

Efficient Dynamic Object-OrientedProgram Slicing

박순형,박만곤 한국멀티미디어학회 2003 멀티미디어학회논문지 Vol.6 No.4

Traditional slicing techniques make slices through dependence graphs. They also improve the accuracy of slices. However, traditional slicing techniques require many vertices and edges in order to express a data communication link because they are based on static slicing techniques. Therefore the graph becomes very complicated, and size of the slices is larger. We propose the representation of a dynamic object-oriented program dependence graph so as to process the slicing of object-oriented programs that is composed of related programs in order to process certain jobs. We also propose an efficient slicing algorithm using the relations of relative tables in order to compute dynamic slices of object-oriented programs. Consequently, the efficiency of the proposed efficient dynamic object-oriented program dependence graph technique is also compared with the dependence graph techniques discussed previously As a result, this is certifying that an efficient dynamic object-oriented program dependence graph is more efficient in comparison with the traditional object-oriented dependence graphs and dynamic object-oriented program dependence graph.

리소의 에니어그램 유형별 건강수준 분석에 대한 재해석

박순형 대한에니어그램영성학회 2017 대한에니어그램영성학회지 Vol.6 No.-

Purposes: The purpose of this paper is to suggest a way to distinguish health levels of each Enneagram type simply, clearly and more easily by classifying the characteristics of health level into self consciousness, others consciousness, indirect expression and direct expression. Methods: This study is a literature review as a study on re-analysis of health level analysis by Enneagram types. Results: First, we present characteristics of health level that can be commonly applied to each type of Enneagram. In order to distinguish the characteristics according to health level, the level 2 to 5 are divided into self-consciousness, other people's consciousness, direct expression and indirect expression, and the level 6 to 8 are classified into direct expression and indirect expression. The level 1 is classified as 'transcendence' and 'liberty', and the level 9 is classified as 'self-destruction' and 'destruction of others'. And the characteristics of the health level are applied to the results of the actual health status of Riso. As a result, it is found that the characteristics of each level are applied to all types. Conclusions: It is found that there is another measure to classify the health level of the person by looking at the words or behaviors expressed externally regardless of the characteristics of the types.

다중 기준변수를 사용한 동적 프로그램 슬라이싱 알고리즘의 효율성 비교

박순형 부경대학교 기초과학연구소 1999 부경대 기초과학연구논문집 Vol.2 No.-

진주종성 중이염의 진단에서 프로펠러 확산강조영상의 유용성

박순형,이예원,박준완,장호준,남성일 대한이비인후과학회 2016 대한이비인후과학회지 두경부외과학 Vol.59 No.12

Background and Objectives This study was to done to determine the value of PROPELLER diffusion-weighted imaging in detecting cholesteatoma. Subjects and Method Sixty-five patients were evaluated by preoperative magnetic resonance imaging (MRI) with PROPELLER diffusion-weighted imaging. Of 65 patients, 16 patients had chronic otitis media without cholesteatoma and 49 patients with cholesteatoma. Surgical and pathologic findings were compared with the preoperative findings by PROPELLER diffusion-weighted imaging to assess the sensitivity, specificity, positive and negative predictive values. Results In 49 patients with cholesteatoma, high signal intensity compatible with cholesteatoma was found in 46 patients, whereas in 16 patients without cholesteatoma, high signal intensity was not detected in any of them. The sensitivity, specificity, positive and negative predictive values for PROPELLER diffusion-weighted imaging were 94.1%, 100%, 100%, and 84.2%, respectively. Conclusion PROPELLER diffusion-weighted imaging can be a useful tool in detecting cholesteatoma. Korean J Otorhinolaryngol-Head Neck Surg 2016;59(12):813-8

다단계 범주형 데이터의 유사도 측정

박순형,이우기 한국경영과학회 2011 한국경영과학회 학술대회논문집 Vol.2011 No.5

기존의 범주형 데이터 유사도 측정 방식은 단순 범주형 데이터의 유사도를 측정하는 경우가 일반적이었다. 실제 범주형 데이터의 경우 깊이가 2보다 더 깊은 다단계 범주형 데이터의 경우가 많다. 또한 그러한 데이터 구조 사이의 경우 2차 관계가 형성될 수 있다. 이러한 문제를 해결하기 위해 본 논문에서는 가장 처음 분기되는 시점에는 off-diagonal matrix 방식을 사용하고 이후에는 diagonal matrix 방식을 사용하여 다단계 데이터의 유사도 측정을 하고자 한다.

동적 슬라이싱 기법을 이용한 프로그램 버전들의 통합 알고리즘

박순형,정은이,박만곤,Park, Sun-Hyeong,Jeong, Eun-Lee,Park, Man-Gon 한국정보처리학회 2000 정보처리논문지 Vol.7 No.3

For the operation of the practical software systems, the development, extension and modification phases are successively needed through the new requirements added and their errors debugging detected. Therefore, if it is possible to integrated the reusable software components and to reorganize them into the new software systems, we can improve the productivity, quality, and cost-effectiveness for he development of software systems. For these reasons, it will be required to research and develop methodology and tools for programs integration which make some programs merged effectively. In the process of merging two versions of a program into one, we can consider that some parts of the two versions are equivalent under the non-interference between them. According to the previous studies the program selected to determine the criterion of non-interference between them. According to the previous studies the program selected to determine the criterion of non-interference was very large, so we have difficulty in integrating many programs practically. In this paper, we propose a new improved algorithm which can reduce the related program size of non-interference criterion yb use of dynamic slicing techniques for integration of two versions of a program, and prove the efficiency of the proposed algorithm by showing some examples.

다단계 범주형 데이터의 유사도 측정

박순형,이우기 대한산업공학회 2011 대한산업공학회 춘계학술대회논문집 Vol.2011 No.5

기존의 범주형 데이터 유사도 측정 방식은 단순 범주형 데이터의 유사도를 측정하는 경우가 일반적이었다. 실제 범주형 데이터의 경우 깊이가 2보다 더 깊은 다단계 범주형 데이터의 경우가 많다. 또한 그러한 데이터 구조 사이의 경우 2차 관계가 형성될 수 있다. 이러한 문제를 해결하기 위해 본 논문에서는 가장 처음 분기되는 시점에는 off-diagonal matrix 방식을 사용하고 이후에는 diagonal matrix 방식을 사용하여 다단계 데이터의 유사도 측정을 하고자 한다.

Change in Tinnitus after Treatment of Vestibular Schwannoma: Microsurgery vs. Gamma Knife Radiosurgery

박순형,문인석,오희소,전주현,이용주,이원상 연세대학교의과대학 2014 Yonsei medical journal Vol.55 No.1

Purpose: Tinnitus is a very common symptom of vestibular schwannoma, present in 45 to 80% of patients. We evaluated changes in tinnitus after translabyrinthine microsurgery (TLM) or gamma knife radiosurgery (GKS). Materials and Methods: Among 78 patients with vestibular schwannoma who underwent TLM or GKS at Severance Hospital from 2009-2012, 46 patients with pre- or postoperative tinnitus who agreed to participate were enrolled. Pure tone audiometry, tinnitus handicap inventory (THI), visual analogue scale (VAS) scores for loudness, awareness, and annoyance were measured before and after treatment. Changes of THI and VAS were analysed and compared according to treatment modality, tumour volume, and preoperative residual hearing. Results: In the TLM group (n=27), vestibulocochlear nerves were definitely cut. There was a higher rate of tinnitus improvement in TLM group (52%) than GKS group (16%, p=0.016). The GKS group had a significantly higher rate of tinnitus worsening (74%) than TLM group (11%, p<0.001). Mean scores of THI and VAS scores significantly decreased in the TLM group in contrast to significant increases in the GKS group. Tumor volume and preoperative hearing did not affect the changes in THI or VAS. Conclusion: GKS can save vestibulocochlear nerve continuity but may damage the cochlea, cochlear nerve and can cause worsening tinnitus. In cases where hearing preservation is not intended, microsurgery with vestibulocochlear neurectomy during tumor removal can sometimes relieve or prevent tinnitus.

신문기사를 활용한 지역화폐 이슈 도출

박순형,홍순구,김종원,임성배 한국경영정보학회 2021 한국경영정보학회 학술대회논문집 Vol.2021 No.11

대안적 사회운동의 하나로 운영되기 시작된 지역 화폐는 지역경제활성화의 목적을 가지고 매년 발행 규모를 확장시키고 있으며 사회적 관심도 증가하고 있다. 이에 신문기사 분석을 통해 지역화폐가 가지 고 있는 사회적 이슈를 다각도로 살펴볼 필요가 있 다. 본 연구는 지역경제 활성화를 위해 시행되고 있 는 ‘지역화폐’에 관련된 신문기사를 분석하여 사회적 으로 형성되고 있는 주요 이슈가 무엇인지를 파악하 는 것이다. 이를 위하여 지역화폐가 활성화되기 시 작한 2017년부터 2021년까지 보도된 ‘지역화폐’관련 신문기사 14,709건을 수집하고 전처리과정을 거쳐 빈도분석과 LDA분석을 실시하였고 총 7개의 토픽을 도출하였다. 연구 결과, 지자체별 지역화폐 발행을 통한 지역 내 소비 활동은 지역화폐가 가지는 본질 적 목적인 경제적 자립, 지역순환경제 등 사회적 목 적과도 부합하였다. 구체적으로 살펴보면 첫째, 지역 화폐의 정책적 발행을 통해 지역 내 소비를 유도하 여 지역소상공인의 소득 증대의 효과를 가지는 것으 로 나타났다. 둘째, 지역화폐 발행과 유통은 지역전 통시장활성화에 기여하고 지역경제 순환시스템 구축 에 도움이 되는 것으로 나타났다. 셋째, 지역화폐플 랫폼에 블록체인기술을 도입함으로써 지역화폐의 안 정적 운영이 가능하게 되었다. 본 연구는 신문기사 분석을 통하여 지역화폐정책 과 제도에 대한 방향성을 확인했다는데 학술적 의의 가 있다.