• 디지털융복합연구
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• 제16권11호
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• pp.495-500
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• 2018

본 연구는 멀티 디바이스 환경에서 사용자 경험의 연속성을 높일 수 있는 요인들에 대해 알아보았다. 우선 구조적 차이와 태스크의 연속성에 관해서는 크로스 미디어의 특성에 따른 OS의 차이와 마우스의 사용과 터치 제스처라는 기능적인 차이가 연속성을 방해하는 요소로 나타났으며 연속성을 높이기 위해서는 메타포와 어포던스로 시각 단서를 제공해 상관성과 가시성을 높여주어야 한다. 시각 기억과 인지의 연속성 부분에서는 시지각적 요소의 동일성과 유사성으로 익숙함을 부여하여 친숙성의 요인이 연속성과 밀접한 관련이 있음을 알 수 있었다. 마지막으로 사용자 경험의 연속성을 위해서는 시지각적 요소는 물론 정보의 의미와 배치의 일관성이 사용자 경험의 연속성을 위한 요인이 되는 것을 알 수 있었다. 이를 바탕으로 사용자 경험의 연속성 차원의 친숙성, 일관성, 상관성, 가시성의 요인으로 회귀 분석을 실시한 결과 친숙성, 일관성, 상관성은 유의미한 영향 요인인 반면 가시성은 연속성에 큰 영향을 미치지 않음을 알 수 있었다.

• Asia pacific journal of information systems
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• 제22권3호
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• pp.1-27
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• 2012

Many companies have recently become interested in using social networking sites such as Twitter and Facebook as a new channel to communicate with their customers. For example, companies often offer "special deals" (e.g., coupons, discounts, free samples, etc.) to their customers who participate in promotions or events on social networking sites. Companies often make important announcements on their products or services on social networking sites. By doing so, customers are encouraged to continue to have relationships with companies on social networking sites and to recommend the companies' presence on social networking sites to other potential customers. Moreover, customers who keep close relationships with companies on social networking sites often provide the companies with valuable suggestions and feedback. For instance, Starbucks has more than 2 million followers on Twitter, and often receive suggestions and feedback for their product offerings and services from the followers on Twitter. Although companies realize potential benefits of using social networking sites as a channel to communicate with their customers, it appears that many companies have difficulty forging long-lasting relationships with customers on social networking sites. It is often reported that many customers who had followed companies on Twitter later stopped following them for various reasons. Therefore, it is an important issue to understand what motivates customers to continue to keep relationships with companies on social networking sites. Nonetheless, due attention has yet paid to this issue until recently. This study intends to contribute to our understanding on customers' intention to continue to follow companies on Twitter and to spread positive word-of-mouth about companies on Twitter. Specifically, we identify seven potential factors that customers perceive as important in evaluating their experience with companies on Twitter. The seven factors include similarity, receptivity, interactivity, ubiquitous connectivity, enjoyment, usefulness and transparency. We posit that the seven perception factors can affect the two types of satisfaction, emotional and cognitive, which can in turn influence on customers' intention to follow companies on Twitter and to spread positive word-of-mouth about companies on Twitter. Research hypotheses formulated in this study were tested with data collected from a questionnaire survey administered to customers who had been following companies on Twitter. The data was analyzed with the partial least square (PLS) approach to structural equation modeling. The results of data analysis based on 177 usable responses were generally supportive of our predictions for the effects of the seven factors identified and the two types of satisfaction. In particular, out results suggest that emotional satisfaction was strongly influenced by perceived similarity, perceived receptivity, perceived enjoyment, and perceived transparency. Cognitive satisfaction was significantly influenced by perceived similarity, perceived interactivity, perceived enjoyment, and perceived transparency. While cognitive satisfaction was found to have significant and positive effects on both continued following and word-of-mouth intentions, emotional satisfaction had a significant and positive effect only on word-of-mouth intention.

• 건축역사연구
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• 제7권4호
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• pp.49-60
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• 1998

The first aim of this paper is to investigate and analyze Alan Colquhoun's architectural hermeneutics of tradition, 'conceptual displacement of the past.' The second aim is to overcome the limit of it, and to suggest new architectural hermeneutics of tradition, 'the reactivation of the past.' The architectural work is reduced by Colquhoun to typology or arbitrary language because he believes that without arbitrary language natural language is not able to work effectively. However, he ignores that two languages cannot be separable. When they are separated the key to natural language is understood to be an unverifiable similarity between a sense perception and its correspondence in the architectural object, while the key to arbitrary language becomes mere artificial agreement on the value and function of the linguistic sign. Therefore, natural language is appropriate only when it permits spontaneous combinations of sensory data within complex structures which emerge from, and support, complex human interaction and communication(the shining of the world and of the possibility of creative being in each individual thing). Only when architecture is translated into this kind of language, can it reactivate the world's past, and become poetic.

• 대한가정학회지
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• 제38권1호
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• pp.59-73
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• 2000

The purposes of this study were to determine the factors that influence consumer concerns for safety to cow's milk produced using food-related biotechnology and to find the similarity and difference among concern factors relating short-term and long-term risk perception. Telephone interviews were conducted and the data were collected from households(n=1,466) nationwide in the U.S. And the data were analyzed by probit model and LIMDEP softare package. The data demonstrated that consumers were concerned about food safety from consuming milk produced using food-related biotechnology. The concerns were found to be influenced by demographic factors(gender in short-term, gender and age in long-term) as well as psychological aspect such as outrage(heard about bGH, milk belief about naturalness, expected benefit in short-term, heard about bGH, expected benefit in long-term) and attitudinal factors(animal rights group, locus of control in short-term, animal rights group, cancer history, locus of control in long-term). The results suggest that consumers have concerns for safety to cow's milk produced by biotechnology and the most factors influencing consumer concerns were similar between short-term and long-term period, though a few factors such as cancer history, milk belief about naturalness and age were different.

• 한국의류학회지
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• 제27권11호
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• pp.1260-1269
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• 2003

This paper endeavors to examine the most suitable formal dress design for mid-aged men who lives in Kwangju, the Republic of Korea. Visual effect in associate design is considered with adjustment, figured and the body type. There are partly similarity differences in associate design visual effect by one's shape and clothes design. Firstly, in thin type, striped figured suit is the most attractive. Single adjustment suit with striped figured tend to be attractive, young and modernistic. Single adjustment without figured is felt the mellowest. Secondly, in standard type, the suit without figured is perceived the most attractive and masculine. The suit with striped figured is looked more young. Single adjustment suit without figured is the most attractive and mellow also single adjustment with figured is felt the youngest. Double adjustment without figured is felt mellow and with striped figured is felt the most modernistic and familiar. Also double adjustment suit with check figured is felt more modernistic. Thirdly, in pyknic type, the solid figured and striped figured of the suits are felt more masculine and single without figured is thought attractive. Single adjustment with check figured is common image. Also, double adjustment with stripe figured is perceived attractive. In conclusion, the adjustment, number of button and figure are very important facts for the clothes for giving whole visual effect of men's suit.

• 한국의류학회지
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• 제33권1호
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• pp.33-44
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• 2009

This study is a survey of college students who have been exposed to a variety of clothing consumption environments such as online transactions through the Internet, with the purpose of examining the influence of salespersons attributes on college students' relationship commitment and perception of salespersons performance. The study conducted a questionnaire survey on 464 male and female students and used SPSS 12.0 for statistical data analyses such as mean, standard deviation, frequency analysis, reliability analysis, factor analysis, and multiple regression analysis. The results of this study can be summarized as follows: First, salespersons attributes such as appearance, expertise, customer orientation, and customer management fumed out as the factors that influence the satisfaction under relationship commitment at statistically significant levels. Likeability, customer orientation, and customer management were found to have statistically significant influence on perceived reliability of salespersons. Second, with respect to the influence of relationship commitment on customer performance, statistically significant factors included satisfaction and reliability. Customer orientation is considered most important by both male and female students among the salespersons attributes, followed in order by expertise, customer management, appearance, ethic and similarity. Likeability was found to be the least important attribute.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제10권4호
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• pp.1877-1891
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• 2016

In video coding, the goal of rate control (RC) is not only to avoid the undesirable fluctuation in bit allocation, but also to provide a good visual perception. In this paper, a novel frame-level rate control algorithm for High Efficiency Video Coding (HEVC) is proposed. Firstly a model that reveals the relationship between bit per pixel (bpp), the bitrate of the intra frame and the bitrate of the subsequent inter frames in a group of pictures (GOP) is established, based on which the target bitrate of the first intra frame is well estimated. Then a novel frame-level bit allocation algorithm is developed, which provides a robust bit balancing scheme between the intra frame and the inter frames in a GOP to achieve the visual quality smoothness throughout the whole sequence. Our experimental results show that when compared to the RC scheme for HEVC encoder HM-16.0, the proposed algorithm can produce reconstructed frames with more consistent objective video quality. In addition, the objective visual quality of the reconstructed frames can be improved with less bitrate.

• Healthcare Informatics Research
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• 제24권4호
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• pp.276-282
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• 2018

Objectives: Due to the uncontrolled increase of the mobile health applications and their scarce use by elderly for reason of absence credibility of measurements by lack scientific support, the aim of this study was to evaluate the differences between the biophysical measurements based on standard instrument against a mobile application using controlled experiments with elderly to propose an effective validation model of the developed apps. Methods: The subjects of the study (50 people) were elderly people who wanted to check their weight and cardiac status. For this purpose, two mobile applications were used to measure energy expenditure based on physical activity (Activ) and heart rate (SMCa) during controlled walking at specific speeds. Minute-by-minute measurements were recorded to evaluate the average error and the accuracy of the data acquired through confidence intervals by means of statistical analysis of the data. Results: The experimental results obtained by the Activ/SMCa apps showed a consistent statistical similarity with those obtained by specialized equipment with confidence intervals of 95%. All the subjects were advised and trained on the use of the applications, and the initial registration of data to characterize them served to significantly affect the perceived ease of use. Conclusions: This is the first model to validate a health-app with elderly people allowed to demonstrate the anthropometric and body movement differences of subjects with equal body mass index (BMI) but younger. Future studies should consider not only BMI data but also other variables, such as age and usability perception factors.

• The Journal of Asian Finance, Economics and Business
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• 제9권5호
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• pp.397-407
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• 2022

The informal economy is a large part of the urban economy. The informal economy accounts for about half of Pakistan's GDP. This research examined nine different areas of Rawalpindi's Central Business District's business sector (CBD). A survey of 404 respondents from 16 CBD marketplaces enables a comprehensive examination of who works in the informal and formal economic sectors, how much they earn, their goals, perception of their job, and their degree of similarity to the rest of the working population. Furthermore, the statistics illustrate the pro-cyclical connections between the informal economic sector and the formal economy. The Multinomial Logistic Regression (MLR) technique is used for the analysis. The MLR results indicated the informal economic sector holds positive relation with earning members in a family, business expertise, average business sale, and negative relation with education level, satisfaction with government tax policies, household expense, and average investment in the business. From a resilience standpoint, governance is considered an intentional collective action to preserve a stable system condition. Hence, the current study recommends tax reforms and government institution reorganization to mobilize the informal sector and make effective institutional governance.

• 방송공학회논문지
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• 제20권6호
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• pp.818-826
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• 2015

인간 시각 체계(Human Visual System: HVS)의 영상 화질 인지 특성을 정교하게 반영하는 객관적 영상 화질 측정(Image Quality Assessment: IQA)방법들이 최근 활발히 연구되어 왔다. 이와 관련된 HVS의 특성 중, 광적응(Luminance Adaptation: LA)효과는 HVS의 왜곡에 대한 민감도가 영상 배경 밝기에 따라 달라지는 특성을 가리키며, 이 효과는 베버의 법칙(Weber's law) 모델을 통해 많은 IQA 방법들에 반영되어져 왔다. 본 논문에서는 처음으로 이러한 베버의 법칙 모델을 기반으로 하는 기존 IQA 방법들이 LA 효과를 부정확하게 반영해 왔다는 점을 수학적/정신물리학적 분석을 통해 밝힌다. 이러한 분석을 기반으로 우리는 IQA 방법에 LA 효과가 정교하게 적용될 수 있는 새로운 LA 효과 기반 국부 가중치 함수(LA effect-based Local weight Function: LALF)를 제안한다. 우리는 제안 LALF를 SSIM(Structural SIMilarity) 및 PSNR 척도(metric)에 적용하여 제안 방법의 효과를 검증하였다. 실험 결과, LALF가 적용된 SSIM은 기존 SSIM 대비 측정된 주관적 화질 점수와의 스피어 랭크 순위 상관계수 기준 약 5% 포인트가 향상될 정도로 제안 방법의 큰 효과성을 입증하였다. 또한, 제안한 LALF는 PSNR에 적용된 경우에도 기존 PSNR 대비 약 2.5% 포인트의 성능 향상을 보였다.