Dynamic Grid Method for the Interface Design

Cheng,Hong In,Kim,Mi Young (사)한국디지털디자인협의회 2006 (사)한국디지털디자인협의회 conference Vol.2006 No.2

영화홍보 웹 사이트의 재미요소에 관한 감성공학적 분석

이경희,정홍인 경성대학교 공학기술연구소 2003 공학기술연구지 Vol.S2 No.1

Usability has been regarded as the most significant principle at designing web sites. The 'Fun' elements causing fun emotion, however, can be more important for some web sites especially developed for specific purposes. Movie publicizing web sites contain various multimedia such as motion graphic, voice of actor and actress, interactive game inducing users to feel the 'Fun'. Eleven elements which induces the 'fun' feeling was extracted from the magazine jungle web sites and fifteen movie publicizing web sites were evaluated. The elements were then analyzed by using a questionnaire and web design guideline was suggested which might induce the 'Fun' feeling of web sites.

감성평가의 웹 디자인 적용에 관한 연구

김미영,정홍인 경성대학교 공학기술연구소 2003 공학기술연구지 Vol.S2 No.2

New design method has been required for web designers to grasp the proper emotion, impression, and feeling of users evoked by visiting a web site and reflect these elements in web design. It is certain that such a new method can be a useful design tool, since web designers have only relied on their intuition and experience to induce users to perceive specific emotion of web sites. In this study, Kansei Engineering Type Ⅰ(Nagamachi 2002, Park 2000) was introduced to develop the methodology. The statistical methods and quantitative evaluation method using balance, overall density, and homogeneity were also introduced. The cause-and-effect between the results of emotional and quantitative analysis was examined by employing multiple regression and which could applied to the practical web design inducing specific emotion. The research method and procedures applied to this study would be applicable to design studies related to the emotional inducement.

The development of light-responsive, organic dye based, supramolecular nanosystems for enhanced anticancer therapy

Cheng, Hong-Bo,Cui, Yixin,Wang, Rui,Kwon, Nahyun,Yoon, Juyoung Elsevier Publishing Company 2019 Coordination Chemistry Reviews Vol. No.

<P><B>Abstract</B></P> <P>Light-responsive supramolecular nanosystems refer to phototherapeutic agents that could be triggered by light. They have thus shown promising applications and aroused tremendous attention in many fields including drug delivery systems, photodynamic therapy and photothermal therapy. In the review, after a brief introduction of the development of light-responsive organic dye based supramolecular nanosystems for anticancer therapy, an overview of recent advances made during the past five years is provided. Finally, challenges that need to be confronted and new opportunities that exist in the rapidly developing field are discussed.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The recent advances in the development of light-driven turn on cancer-associated supramolecular theragnostic are reviewed. </LI> <LI> Types and characteristics of light-responsive supramolecular nanosystems for anticancer therapy are discussed. </LI> <LI> The main approaches to the constructing of light-responsive supramolecular nanosystems for anticancer therapy are included. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

Effect of Halloysite Clay on Magnetic Carbonyl Iron-Based Magnetorheological Fluid

Cheng Hai Hong,Hyoung Jin Choi IEEE 2014 IEEE transactions on magnetics Vol.50 No.11

<P>Soft magnetic carbonyl iron (CI)-based magnetorheological (MR) fluids with different loadings of halloysite nanoclay were prepared, in which the MR fluid is a complex colloidal suspension consisting of magnetic particles dispersed in a liquid, showing its rapid, reversible, and tunable change between a liquid-like and solid-like state with an applied external magnetic field. The MR characteristics were measured via rotational tests, in which the flow curves exhibited a non-Newtonian behavior for all investigated samples under applied magnetic fields. Flow curves showed not only the dynamic yield stress change measured as a function of magnetic field strength using a power law fit, but also the existence of a solid-like character. Sedimentation of the MR fluid with and without an additive was also examined.</P>

A Pilot Study to Develop an Efficient Film Classification Method

Hong-In Cheng,HyunheeJung,Mahnwoo Kwon,Jae Woong Shim 대한인간공학회 2014 대한인간공학회 학술대회논문집 Vol.2014 No.11

Objective: The possibility of a simpler movie classification method was examined in this study. Background: The Korea Media Rating Board (KMRB), an independent non-governmental organization, classifies more than 1,200 movies and 4,500 videos in a year. All movies should be watched by the board members to be rated and film classification is a very tardy process. Method: Two experiments were conducted to examine the possibility of applying physiological measurements to film classification. In the first experiment, most sexual and violent scenes of 32 movies were captured and classified by university students after brief explanation and training. Eye movements of the participants were recorded and analyzed while they watched 6 movies in the second experiment. Results: The participants evaluated 15+ and R rated movies consistently. Especially for sexual movies, 100% consensus was achieved among the participants. More and longer fixations were given to the more sexual and violent objects and body parts. Conclusion: Extreme scenes of 15+ and R movies could be captured and used for the classification. We observed eye gaze analysis would have potentiality to be used for evaluating the movies. More convenient and accurate physiological indexes need to be examined. Application: We will apply the results to find better physiological measurements for the movie classification.

Vibration Suppression of Flexible Beam Using Electromagnetic Shunt Damper

Cheng Tai-Hong,Oh Il-Kwon 한국자기학회 2008 한국자기학회 학술연구발표회 논문개요집 Vol.- No.-

Coil-based Electromagnetic Damper and Actuator for Vibration Suppression of Cantilever Beams

Cheng, Tai-Hong,Oh, Il-Kwon SAGE Publications 2009 Journal of intelligent material systems and struct Vol.20 No.18

<P>In this study, both an eddy current coil damper and an electromagnetic actuator were developed for the vibration suppression of a cantilever beam integrated with a copper coil and a permanent magnet. The control system for the vibration suppression of the electro-magneto-mechanically coupled beam that consists of a coil attached to an aluminum beam and a permanent magnet installed below the coil was proposed. Alternatively, the conductive coil can be passively and actively used as a damper and an actuator. The effects of various coil shapes including a cylindrical tube, a square tube and a circular sheet were investigated to determine optimal vibration suppression for the cantilever beam. The frequency response function of a beam with the theoretical model of the magnetic eddy current damping system was predicted and its accuracy was compared to the experimentally measured frequency response. Also, the results of the active control with a positive position feedback method were compared with those of the passive eddy current dampers with open and closed circuits. The experimental data showed that the tube type coils had much higher vibration suppression efficiency than the sheet type coil and the active vibration control strategy can be alternatively used to improve the electromagnetic damper system.</P>

A current-flowing electromagnetic shunt damper for multi-mode vibration control of cantilever beams

Cheng, Tai-Hong,Oh, Il-Kwon Institute of Physics Publishing 2009 Smart materials & structures Vol.18 No.9

<P>In this paper, a multi-mode electromagnetic shunt damper employing the current-flowing method is newly developed for the semi-active vibration control of flexible structures. The electromagnetic shunt damper, which is used for the electromagneto-mechanical coupling transduction between vibrating structures and the electrical shunt circuit, consists of a coil and a permanent magnet. The conducting coil is attached to the cantilever beams and the two ends of the coil are connected to the current-flowing shunt circuit for the reduction of vibration. For the analytical and experimental validation of the multi-mode electromagnetic shunt damper, the first two modes of the cantilever beam are semi-actively controlled. In light of the frequency responses, the vibration and damping characteristics of the flexible beams with the electromagnetic shunt damper are investigated with reference to changes in the circuit parameters. Also, the time responses of the integrated systems with an initial condition are experimentally examined for validation of the proposed damper. The effect of the magnetic intensity on the shunt damping is studied by varying the gap between the aluminum beam and the permanent magnet. The theoretical prediction of the frequency response of the electromagneto-mechanically coupled beams shows good agreement with the experimental results. The present results show that the current-flowing electromagnetic shunt damper can be successfully applied to reduce the multi-mode vibration of flexible structures. </P>

매트리스 종류에 따른 돌아눕기 자세의 근전도 분석

Hong-In Cheng,Young-Hee Kim 대한인간공학회 2018 대한인간공학회 학술대회논문집 Vol.2018 No.5