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Designing motion marking menus for people with visual impairments
Dim, Nem Khan,Kim, Kibum,Ren, Xiangshi Elsevier 2018 International Journal of Human-Computer Studies Vol.109 No.-
<P><B>Abstract</B></P> <P>Current smartphone accessibility for people with visual impairments relies largely on screen readers and voice commands. However, voice commands and screen readers are often not ideal because users with visual impairments rely mostly on hearing ambient sound from the environment for their safety in mobile situations. Recent research has shown that marking menus in mobile devices provide fast and eyes-free access for sighted users Francone et al., 2010; Oakley and Park, 2007, 2009. However, the literature is lacking design implications and adaptations that meet the needs of users with visual impairments. This paper investigates the capabilities of visually impaired people to invoke smartphone functions using marking menus via 3D motions. We explore and present the optimal numbers of menu items (breadth) and menu levels (depth) for marking menus that people with visual impairments can successfully adopt. We also compared a marking menu prototype to TalkBack™ which is an accessibility menu system in Android smartphones. The experimental results show that our participants could perform menu selections using marking menus faster than when using TalkBack. Based on the study results, we provide implications and guidelines for designing marking menus and motion gesture interfaces for people with visual impairments.</P> <P><B>Highlights</B></P> <P> <UL> <LI> We explored the potential of marking menus as a solution to current problems of people with visual impairments in using mobile devices. </LI> <LI> We proposed motion-based marking menus (MMM) for eyes-free interactions in smartphones for people with visual impairments. </LI> <LI> We investigated suitable number of menu items and levels of MMM that are usable for people with visual impairments. </LI> <LI> Users were able to perform marking menu selections in up to 8 directions. Based on the system criteria, we also suggested suitable menu levels. </LI> <LI> We assessed the efficiency of MMM relatively to current smartphone accessibility menu, TalkBack. </LI> <LI> Users could perform menu selections with MMM than with TalkBack. Users were also receptive to the new menu system, MMM. </LI> </UL> </P>
RTMOCVD법에 의해 제조된 Ta₂O(5) 박막의 특성
소명기,Kwong, D.L 江原大學校 産業技術硏究所 1999 産業技術硏究 Vol.19 No.-
Ultra thin Ta₂O5 gate dielectrics were prepared by RTMOCVD (rapid thermal metal organic chemical vapor deposition) using Ta source TaC12H30O5N and O₂ gaseous mixtures. As a result, Ta₂O5 thin films showed significantly low leakage current compared to SiO₂ of identical thickness, which was due to the stabilization of the interfacial layer by NO (SiOxNy) passivation layer. The conduction of leakage current in Ta₂O5 thin films was described by the hopping mechanism of Poole-Frenkel (PF) type.
N-and P-MOSFETs woth CVD and Thermal Gate Oxides : Comparison of Performance and Reliability
Ahn, Jin-ho,Kwong, Dim-Lee 한국재료학회 1995 Fabrication and Characterization of Advanced Mater Vol.2 No.e3
This paper reports the performance and reliability of both n-and p-channel MOSFETs with ultrathin$(65^{\circ}C)$ LPCVD gate oxides annealed in $N_2$ ambinet as compared to MOSFETs with thermal gate oxides. It is shown than n-and p-MOSFETs with CVD gate oxides ahve better initial device performance ($higher\;g_m$, current dirivability, and effective electron and hole mobilities) and enhanced device reiability(${\Delta}g_{m}$, ${\Delta}V_{th}$ and stress-induced GIDL enhancement) than the MOSFETs with thermal gate oxides. Furthemore, signigicantly improved time-dependent dielectric breakdown characteristics of CVD gate oxide has been demonstrated. Strainless CVD $SiO_2$ after proper post-deposition annealing and the film formation mechanism(deposited-on rather than grown from the substrate) are speculated to results in the improvements in performance and reliability of CVD oxide devices.
송유정 ( Yu-jeong Song ),임선영 ( Sun-young Dim ),박영호 ( Young-ho Park ) 한국정보처리학회 2015 한국정보처리학회 학술대회논문집 Vol.22 No.1
최근 GPS를 통한 위치 정보를 이용하여 사용자들에게 편리한 서비스를 제공하기 위한 개발이 활발하다. 그 중 스마트 폰은 대중들이 쉽고 편리하게 접할 수 있는 GPS 탑재 기기이다. 이에 본 논문에서는 스마트 폰으로 찍은 사진의 장소를 눈으로 보기 쉽게 지도에 나타내어 사용자로 하여금 사진 관리를 쉽게 할 수 있도록 하는 사진 위치 뷰어를 구현하였다. 기존의 서비스가 웹으로만 제공되는 단점을 보완하여 스마트 폰 애플리케이션으로 서비스를 제공할 수 있으며, 해당 서비스를 통해 자신이 찍은 사진의 장소를 한눈에 시각적으로 확인함으로써, 사용자는 사진의 시각적인 관리와 정리가 가능하다.