1,720,956 research outputs found
Interpreting Romans 13 in Modern Korea
Get PDFThis essay introduced and examined the thesis “Politics of Romans 13” in which Korean historian Kang Seongho described the interpretations of Romans 13: 1-7 in Korea from the time beginning under Japan’s Imperial rule to the postwar era of the 1980s. The author evaluated Kang's long historical and self-critical analysis of Korean Protestantism, with an interesting examination relating to political confrontations of the time. At the same time, the author argued that Kang’s pioneer work would have more impact, if its theoretical framework was sophisticated and if it included “practical interpretations” of Romans 13.departmental bulletin pape
韓国におけるローマ書13章解釈史の試み ――カン・ソンホ「ロマ書13章の政治学」について
No full textThis essay introduced and examined the thesis “Politics of Romans 13” in which Korean historian Kang Seongho described the interpretations of Romans 13: 1-7 in Korea from the time beginning under Japan’s Imperial rule to the postwar era of the 1980s. The author evaluated Kang's long historical and self-critical analysis of Korean Protestantism, with an interesting examination relating to political confrontations of the time. At the same time, the author argued that Kang’s pioneer work would have more impact, if its theoretical framework was sophisticated and if it included “practical interpretations” of Romans 13
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Deterministically-grown GaN microrods on a mask-free plateau patterned substrate
No full textIn this study, a polished plateau-patterned sapphire substrate (PP-PSS) was developed to grow epitaxial GaN microrods using an AlN buffer layer via pulsed metal-organic chemical vapor deposition. The diameter of the plateau region could be easily adjusted in the range of 600-1600 nm by altering the polishing time, allowing the selective growth of the GaN microrods in only the plateau region and subsequent deposition on the AlN layer. The GaN microrod growth mechanism on the PP-PSS was explained using the morphology of the grown GaN microrods. Transmission electron microscopy revealed that the single-crystalline GaN microrods had a GaN (0002) d spacing of 0.263 nm, and a measured lattice constant ratio of the (0001) and (10 1 0) planes of 0.535, which is similar to the theoretical value of 0.532 for a fully relaxed GaN. Through Raman spectroscopy, the GaN microrod E2 (high) mode was 566.70 cm 1, which was shifted by only 0.50 cm -1 compared to that of the strain -free reference. These results suggest that stress-free GaN microrod epitaxial growth is possible on PP-PSS.
하이브리드 모델링과 베이지안 최적화를 이용한 엔진 마운트 응답개선
Get PDF학위논문 (석사) -- 서울대학교 대학원 : 공과대학 기계항공공학부, 2020. 8. 강연준.This paper presents the results of a study conducted to predict and improve the response of an engine mount using a hybrid model that combines both experimental data and finite element (FE) analysis. The engine mount is the main point of transmission of engine vibration forces to the vehicle body. Therefore, improving the dynamic response of the engine mount improves the overall NVH performance of the vehicle. The hybrid modeling method adopts the substructure synthesis method based on the frequency response function based substructuring (FBS) theory, in this method, a complex dynamic structure is divided into multiple substructures, and the frequency response function (FRF) of the entire system is predicted using the FRFs of individual substructures. This method allows engineers to predict the changes in the experimental FRF of an existing physical system by applying FE analysis only to the substructures that have undergone a design modification. The change in the overall dynamic performance of the system can be predicted by modifying the CAD model of the substructure without preparing a physical model. Furthermore, the optimal design is proposed by applying the Bayesian optimization technique in this paper.본 논문에서는 차량 엔진 구조물에 대해 실험 데이터와 유한요소 해석 데이터를 모두 이용하는 Hybrid 모델의 부분구조합성법을 통해 엔진 마운트에서의 응답을 예측하는 연구를 수행하였다. Hybrid 모델 부분구조 합성법은 복잡한 전체 시스템을 여러 개의 부분구조로 나누어 각각의 Frequency Response Function(FRF)만으로 전체 시스템의 FRF를 예측하는 FRF Based Sub-structuring(FBS)이론을 기반으로 하며, 특정 부분 구조물은 실험 데이터를 다른 부분 구조물은 유한요소해석 데이터를 사용한다. 이러한 방법은 시스템 일부분의 변화가 시스템 전체에 미치는 영향을 빠르게 파악 할 수 있기 때문에 여러 분야에서 활발하게 연구하고 적용되고 있다. 특히, 제품이 개발된 후 성능개선을 위한 부분 구조물의 설계변경에 따른 전체 시스템의 FRF를 예측하는 데 유용하게 사용된다. 일반적으로 설계변경이 이뤄지는 부분 구조물의 경우 유한요소해석 데이터를 사용하는데 이는 실험 데이터와 달리 실제 물리적 모델 제작 없이 컴퓨터를 이용한 간단한 모델링 변경만으로도 전체 시스템의 성능을 예측할 수 있기 때문이다. 본 연구에서는 엔진 마운트의 응답을 예측하고 감소시키기 위해 Hybrid 모델의 부분구조합성법이 적용되었다. 엔진 마운트의 경우 그 응답이 차체로 유입되는 가진력이 되므로 차량 전체의 NVH성능 개선을 위해선 엔진 마운트의 응답 레벨을 줄이는 것이 필요하다. 유한요소해석이 적용되는 알터네이터 브라켓의 구조변경에 따라 엔진 마운트 응답이 어떻게 달라지는지 예측하고 이러한 경향성을 통해 엔진 마운트 응답을 줄이는 방안을 제시한다. 더 나아가 Hybrid 모델링 기법을 통해 많은 데이터를 빠르게 얻을 수 있다는 장점을 활용하여, Bayesian optimization 기법을 적용 하였고 이를 통해 알터네이터 브라켓의 최적화된 구조강성을 도출하였다.CHAPTER 1 INTRODUCTION 1
CHAPTER 2 LITERATURE REVIEW 4
2.1 Introduction 4
2.2 Frequency Response Function (FBS) Theory 5
CHAPTER 3 OPERATIONAL DEFLECTION SHAPE ANALYSIS 12
3.1 Introduction 12
3.2 ODS and waterfall analysis 12
CHAPTER 4 HYBRID MODELING 15
4.1 Introduction 15
4.2 Hybrid modeling formulation 15
4.3 Reliability verification of hybrid modeling method 16
4.4 Alternator bracket design modification 18
CHAPTER 5 BAYESIAN OPTIMIZATION 30
5.1 Bayesian optimization 30
5.2 Optimization of structural stiffness of alternator bracket using Bayesian optimization 31
CHAPTER 6 CONCLUSION 34
6.1 Contribution 34
6.2 Future work 35
REFERENCES 37
국문 초록 39Maste
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