Chung-Ang University

About: Chung-Ang University is a education organization based out in Seoul, South Korea. It is known for research contribution in the topics: Population & Thin film. The organization has 13381 authors who have published 26978 publications receiving 416735 citations. The organization is also known as: CAU & Chung.

The 2019 Revised Version of Association Research Circulation Osseous Staging System of Osteonecrosis of the Femoral Head

Abstract: Background The Association Research Circulation Osseous (ARCO) presents the 2019 revised staging system of osteonecrosis of the femoral head (ONFH) based on the 1994 ARCO classification. Methods In October 2018, ARCO established a task force to revise the staging system of ONFH. The task force involved 29 experts who used a web-based survey for international collaboration. Content validity ratios for each answer were calculated to identify the levels of agreement. For the rating queries, a consensus was defined when more than 70% of the panel members scored a 4 or 5 rating on a 5-point scale. Results Response rates were 93.1%-100%, and through the 4-round Delphi study, the 1994 ARCO classification for ONFH was successfully revised. The final consensus resulted in the following 4-staged system: stage I—X-ray is normal, but either magnetic resonance imaging or bone scan is positive; stage II—X-ray is abnormal (subtle signs of osteosclerosis, focal osteoporosis, or cystic change in the femoral head) but without any evidence of subchondral fracture, fracture in the necrotic portion, or flattening of the femoral head; stage III—fracture in the subchondral or necrotic zone as seen on X-ray or computed tomography scans. This stage is further divided into stage IIIA (early, femoral head depression ≤2 mm) and stage IIIB (late, femoral head depression >2 mm); and stage IV—X-ray evidence of osteoarthritis with accompanying joint space narrowing, acetabular changes, and/or joint destruction. This revised staging system does not incorporate the previous subclassification or quantitation parameters, but the panels agreed on the future development of a separate grading system for predicting disease progression. Conclusion A staging system has been developed to revise the 1994 ARCO classification for ONFH by an expert panel-based Delphi survey. ARCO approved and recommends this revised system as a universal staging of ONFH.

An empirical examination of perceived retail crowding, emotions, and retail outcomes

Abstract: Crowded retail shopping conditions can result from many shoppers being present during a given time and at a given place, as well as from limited customer space owing to inadequate floor layout design and allocation of fixtures and merchandise on the floor. This study investigated the effects of the perception of human crowding and spatial crowding on consumer shopping behavior through mediation of emotions of pleasure, arousal, dominance, and a feeling of satisfaction in an international market. A store intercept survey was conducted on 554 hypermarket consumers in Taipei, Taiwan. The proposed structural relationships among perceived retail crowding, emotions, and retail outcomes were analyzed by using confirmatory factor analysis and structural equation modeling with Lisrel 8.54. The results of the study demonstrated the effectiveness of the proposed model in delineating the relationships of retail crowding-emotions-satisfaction-retail outcomes under actual retail environments. The study found that while...

Carbon nanotube and graphene hybrid thin film for transparent electrodes and field effect transistors.

Abstract: S. H. Kim, [+] Dr. W. Song, [+] M. W. Jung, M.-A. Kang, K. Kim, Dr. S. S. Lee, Dr. J. Lim, Dr. S. Myung, Dr. K.-S. An Thin Film Materials Research Group Korea Research Institute of Chemical Technology (KRICT) Yuseong Post Offi ce Box 107 Daejeon 305-600 , Republic of Korea E-mail: msung@krict.re.kr Dr. S.-J. Chang Department of Chemistry Chung-Ang University 84 Heukseok-ro , Dongjak-gu, Seoul 156-756 , Korea Prof. J. Hwang Department of Materials Science and Engineering Hongik University Seoul 121-791 , Republic of Korea

A structural equation analysis of the QSL relationship with passenger riding experience on high speed rail: An empirical study of Taiwan and Korea

Abstract: Taiwan High Speed Rail (THSR) began operations in early 2007 after nearly three decades spent initiating project, planning and acquiring land, creating detailed designs and undergoing civil construction. Currently, the franchised corporation operates trains at a top speed of 300km/h when running from north to south in Taiwan. Service Quality, customer Satisfaction, and Loyalty (QSL) continue to be the critical factors that influence long-term operation, growth, and profits of service-oriented transportation systems. In this article, a structural equation model (SEM) is first proposed and then respecified in order to measure the impact of mediating variables in the passenger continuance behavior on the QSL chain with high speed rail (HSR) service. Furthermore, a cross-country comparison of the actual riding experience on the THSR and Korea Train eXpress (KTX) was demonstrated by analyzing different groups of respondents. The empirical study verified that the QSL relationship is influenced by the introduction of mediating variables, such as corporate image and passenger complaints, into the HSR service industry. This analysis provides an evidential basis with the evaluating indicators so that the management team can deploy an effective marketing strategy, achieve continuous quality improvement, and efficiently manage customer relationships to ensure passengers' future commitment and confidence in the HSR systems.