The purpose of this study is to investigate the user characteristics in different age groups by
investigating the level of satisfaction and preference of design and function of mobile phone …

In the past, Manufacturers used to determine the quality of products, but the trend of today's
market becomesmore into customer-driven. As a result, demands from customers are …

The importance of usability has been increasingly recognized due to the enlargement,
complexity and convergence of product functions. Usability has played a key role in …

The main purpose of this article is to incorporate the JND (Just Notice able Difference) into
the design of mobile device display, especially LCD display of mobile phone. JND is the …

Product developers nowadays must consider not only the technological satisfaction of
consumers but their affective needs as well. These affective needs are greatly affected by …

As information technology is develo**, optional features of mobile phone are increasing
while considerations on basic user interface such as key response time are relatively …

In the past, Manufacturers used to determine the quality of products, but the trend of today's
market becomes more into customer-driven. As a result, demands from customers are …

Due to the rapid development of information and communication technology, the ways of
communication between people have been changed. According to the Korean Ministry of …