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.

Roles of University Support for International Students in the United States: Analysis of a Systematic Model of University Identification, University Support, and Psychological Well-Being

Abstract: Unlike previous research on international students’ social support, this current study applied the concept of organizational support to university contexts, examining the effects of university support. Mainly based on the social identity/self-categorization stress model, this study developed and tested a path model composed of four key variables—university identification, university support, school-life satisfaction, and psychological stress. Results from structural equation modeling (SEM) supported most paths among those four variables, particularly presenting the critical roles of university support for international students’ psychological well-being.

Framework for Integrating Safety into Construction Methods Education through Interactive Virtual Reality

Abstract: Construction accidents, injuries, and fatalities have not declined significantly, despite arduous efforts of researchers, safety professionals, and strongly-enforced safety laws. Safety education is crucial in promoting safe and healthy construction work environments; however, current pedagogical methods and tools at the tertiary level do not sufficiently engage students or provide practical experience to support the acquisition of safety knowledge. This paper aims to address the problem by proposing a novel approach that integrates safety with construction materials and methods education. A system is proposed comprising of three sequential modules: (1) safety and hazard lecture (SHL) module; (2) hazard identification game (HIG) module; and (3) student evaluation and assessment (SEA) module. The pedagogical suitability of the system is evaluated by a series of trials where students interacted with instructors. Interim results indicate that the system offers an innovative medium for experientially ...

Efficacy and Safety of Radiofrequency Ablation for Treatment of Locally Recurrent Thyroid Cancers Smaller than 2 cm

Abstract: On the basis of comparable recurrence-free survival and complication rates between radiofrequency ablation (RFA) and reoperation groups, RFA may be performed as an effective and safe alternative to reoperation in patients with localized small recurrent thyroid cancers.

Energy harvesting model of moving water inside a tubular system and its application of a stick-type compact triboelectric nanogenerator

Abstract: As the first invention to efficiently harvest electricity from ambient mechanical energy by using contact electrification, the triboelectric nanogenerator has elicited worldwide attention because of its cost-effectiveness and sustainability. This study exploits a superhydrophobic nanostructured aluminum tube to estimate electrical output for solid-water contact electrification inside a tubular system. The linearly proportional relationship of short-circuit current and open-circuit voltage to the detaching speed of water was determined by using a theoretical energy harvesting model and experimentation. A pioneering stick-type solid-water interacting triboelectric nanogenerator, called a SWING stick, was developed to harvest mechanical energy through solid-water contact electrification generated when the device is shaken by hand. The electrical output generated by various kinds of water from the environment was also measured to demonstrate the concept of the SWING stick as a compact triboelectric nanogenerator. Several SWING sticks were connected to show the feasibility of the device as a portable and compact source of direct power. The developed energy harvesting model and the SWING stick can provide a guideline for the design parameters to attain a desired electrical output; therefore, this study can significantly increase the applicability of a water-driven triboelectric nanogenerator.

Cs 3 VO(O 2 ) 2 CO 3 : an exceptionally thermostable carbonatoperoxovanadate with an extremely large second-harmonic generation response.

Abstract: A novel nonlinear optical (NLO) carbonatoperoxovanadate, Cs3VO(O2)2CO3, with an exceptionally high thermostability was successfully synthesized by introducing highly polarizable Cs+ cations and inorganic polydentate carbonate anions into asymmetric peroxovanadates. The structure of Cs3VO(O2)2CO3 is composed of distorted [VO(O2)2CO3]3− units and charge balancing Cs+ cations. The title compound exhibits the largest NLO intensity ever found in the current carbonate NLO materials, i.e., 23.0 times that of KH2PO4 (KDP). The remarkably strong second-harmonic generation (SHG) response originates from the synergistic effect of the exceedingly polarizable Cs+ cations, distortive polyhedra of the V5+ cation, delocalized π orbitals in CO3 groups, and distorted localized π orbitals in O2 groups. First-principles calculations indicated that introducing the polarizable cations into peroxovanadates not only induces the enhancement of the SHG response but also improves the thermal stability of the framework.