http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
A Holistic Understanding of Web Design Elements : User Experience Design Units
Park,Jiyong 한국디지털디자인학회 2009 디지털디자인학연구 Vol.9 No.1
디자이너에게 있어 웹 디자인 요소를 정의하는 것은 비주얼 커뮤니케이션 (Visual Communication) 관점에서 대상 사용자를 이해하고, 성공적인 웹사이트 제작을 이끌어 내는 무엇보다도 중요한 단계이다. 그러나 일반적으로 알려진 웹 디자인 요소는 매우 광범위하고 다양하여 이를 구성하고 분류하는 것 또한 어려운 일이다. 실제로 많은 웹 디자이너와 디자인 연구자는 웹 디자인 요소를 이해함에 있어 인쇄 미디어에 기반한 그래픽 또는 시각 디자인에 근거하여 그 요소를 정의한다. 분명히 웹 미디어는 인쇄 미디어와 다르며, 특히 사용자 경험의 관점에서 볼 때 더욱 더 그렇다. 이 논문은 온라인 사용자 경험의 관점에서 웹 디자인 요소를 논의하고, 웹 디자이너가 웹 사이트 개발 목적에 따라 웹 디자인 요소를 정의할 수 있도록 하는 근본적이며 새로운 개념인, '사용자 디자인 단위' (UEDUs: User Experience Design Units)를 제안한다. Web design elements are significantly important for web designers to understand target users in terms of effective communication design and to develop a successful web site. However, web design elements generally known are broad and various that are hardly conceived and classified, so many practitioners and design researchers approach to web design elements based on graphic and visual design that mainly focus on print media design. This paper discusses about web design elements in terms of online user experience, as web media certainly differs from print media. It aims to propose a fundamentally new concept, called 'UEDUs: User Experience Design Units' which enables web designers to define web design elements and conceptualise user experience depending on the purpose of web site development.
Subacute oral toxicity of Dendropanax morbiferus H.Lév leaf extracts in Sprague-Dawley rats
Jiyong Park(Jiyong Park),Chang-Soo Cho(Chang-Soo Cho),Jun-Ho Song(Jun-Ho Song),Kwang Il Park(Kwang Il Park),Yeung Bae Jin(Yeung Bae Jin),Woo Hyun Kim(Woo Hyun Kim),Suk Kim(Suk Kim),Hu-Jang Lee(Hu-Jang 한국예방수의학회 2023 예방수의학회지 Vol.47 No.1
This study examined the subacute oral toxicity of Dendropanax morbiferus H.Lév leaves hot-water extracts (DMWE) using male and female Spargue-Dawley rats. Rats were orally administered the DMWE at dose levels of 0, 250, 500, 1,000, and 2,000 mg/kg body weight (BW) for four weeks. For experimental period, clinical signs and the number of deaths were examined, and feed intake and BW of all experimental animals were measured once a week for four weeks. At the end of the experiment, blood samples were collected from all rats, and all animals were euthanized and autopsies were performed to collect major organs. No dead animals were found during the experimental period. In addition, no differences were found between control and DMWE-treated groups in feed intakes, BW changes, organ weights, clinical signs, hematological parameters, and serum biochemical parameters. The results of this study provided evidence that oral administration of DMWE at the dose of 2,000 mg/kg BW is safe in rats and may not exert severe toxic effects.
Acute oral toxicity of Dendropanax morbiferus H.Lév leaf extracts in ICR mice
Chang-Soo Cho(Chang-Soo Cho),Jiyong Park(Jiyong Park),Jun-Ho Song(Jun-Ho Song),Yeung Bea Jin(Yeung Bea Jin),Kwang Il Park(Kwang Il Park),Woo Hyun Kim(Woo Hyun Kim),Suk Kim(Suk Kim),Hu-Jang Lee(Hu-Jang 한국예방수의학회 2023 예방수의학회지 Vol.47 No.1
In this study, the acute toxicity of Dendropanax morbiferus H.Lév leaf hot-water extracts (DMWE) was examined in male and female ICR mice. Mice were orally administered the DMWE at dose levels of 0, 250, 500, 1,000 and 2,000 mg/kg body weight (BW) for single-dose toxicity test. There were no significant differences in change of BW between control and all DMWE treated-groups. In hematological and blood biochemical analysis, none of the parameters were affected by the DMWE. Similarly, there were no significant effects on markers for liver and kidney functions in all DMWE treated-groups. Since there were no adverse effects of the DMWE in single oral toxicity tests, even at the highest doses, it was concluded that the lethal dose 50 (LD50) of DMWE is estimated at > 2,000 mg/kg BW.
Park, Jiyong,Chun, Sunny,Bobik, Thomas A.,Houk, Kendall N.,Yeates, Todd O. American Chemical Society 2017 The journal of physical chemistry. B, Condensed ma Vol.121 No.34
<P>Bacterial microcompartments are giant protein-based organelles that encapsulate special metabolic pathways in diverse bacteria. Structural and genetic studies indicate that metabolic substrates enter these microcompartments by passing through the central pores in hexameric assemblies of shell proteins. Limiting the escape of toxic metabolic intermediates created inside the microcompartments would confer a selective advantage for the host organism. Here, we report the first molecular dynamics (MD) simulation studies to analyze small molecule transport across a microcompartment shell. PduA is a major shell protein in a bacterial microcompartment that metabolizes 1,2-propanediol via a toxic aldehyde intermediate, propionaldehyde. Using both metadynamics and replica exchange umbrella sampling, we find that the pore of the PduA hexamer has a lower energy barrier for passage of the propanediol substrate compared to the toxic propionaldehyde generated within the microcompartment. The,energetic effect is consistent with a lower capacity of a serine side chain, which protrudes into the pore at a point of constriction, to form hydrogen bonds with propionaldehyde relative to the more freely permeable propanediol. The results highlight the importance of molecular diffusion and transport in a new biological context.</P>
Jiyong Park,Daegon Cho,Jae Kyu Lee,Byungtae Lee 한국경영정보학회 2016 한국경영정보학회 학술대회논문집 Vol.2016 No.11
When is the Internet used maliciously for criminal activity? This study examines the conditions under which the Internet is associated with cybercriminal offense. Using comprehensive state-level data in the United States during 2003-2010, our findings demonstrate that there is no clear empirical evidence that Internet penetration is correlated with the Internet crime perpetrators, though the effects of Internet on cybercriminal activities are contingent upon connection speed and socioeconomic factors. Contrary to narrowband, broadband connections are significantly and positively associated with the Internet crime perpetrators. Strikingly, the moderating effects of socioeconomic status are significant only in the absence of social capital. In U.S. states with low social capital, the Internet crime perpetrators increase with the Internet usage when the local economy grew with more education, less unemployment rate, and less population in poverty. Income inequality there also positively moderates the effects of Internet on cybercrime perpetrators. Some implications to reconcile the conflicting consequences of Internet penetration are discussed.