• Clean Technology
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• v.17 no.2
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• pp.117-123
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• 2011

In this study, evaluation tests for cleaning performance of various cleaning agents and selection of optimal ultrasonic cleaning parameters were executed to develop an efficient cleaning process in remanufacturing of laser copy machine. Cleaning performance tests were executed with 8 cleaning agents (A~H) to remove the contaminants of oil-ink, toner particles, and shoe polish. Physical properties and foamability tests were also applied. For 3 types of contaminants, cleaning agent G showed superior cleaning performance compared to agent A which has being used at a remanufacturing of laser copy machine in Korea. With cleaning agents selected in pre-tests, ultrasonic cleaning tests were executed to remove real contaminants on the parts of used digital laser copy machine parts. Cleaning agent G at 28 kHz ultrasonic frequency showed faster cleaning performance compared to agent A and other frequencies. The productivity and economic efficiency in remanufacturing of laser copy machine are expected to increase by adapting agent G and 28 kHz frequency at ultrasonic cleaning process.

• 한국디지털정책학회:학술대회논문집
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• 2004.05a
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• pp.205-228
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• 2004

오늘날 정보와 정보서비스 나아가 정보거래는 경제의 중심에 그 자리를 잡아가고 있다. 이러한 변화중의 하나가 방법의 다양화이다. 현대적 시장의 수요를 충족하는 정보제품을 제작하고 이를 배포함에 있어 그 방법의 다양화가 이루어지고 있는 것이다. 개인용 컴퓨터의 사용이 일반화됨에 따라 범용컴퓨터소프트웨어가 일반소매시장에서 거래되는데, 사용자는 이를 대부분 소프트웨어 상점에 매매의 형식으로 구입한다. 그러나 이 소프트웨어를 사용하기 위해서는 사용자가 동 소프트웨어의 출판인(publisher) 으로부터 라이센스를 득해야 하고, 이를 위해 출판인과사용자 사이에 라이센스 계약이 체결된다. 이러한 라이센스계약의 체결에 있어 소위 "쉬링크랩" (shrink-warp) 방식이 널리 사용되는데, 이 방식의 라이센스계약, 즉 쉬링크랩 라이센스 혹은 쉬링크랩라이센스계약이 미국 계약 법하에서 완전한 효력 즉 강제력을 가지는 지가 문제되어 왔다. 쉬링크랩라이센스는 소프트웨어거래의 효율성을 높이고 거래비용을 감소시킴으로써 규모의 경제를 가능케 하고 나아가 다양한 지적재산권의 보호를 받는 소프트웨어의 탄력적인 라이센스를 가능케 함으로써 결국 소프트웨어출판인과 최종사용자 모두가 그 혜택을 누리게 된다. 쉬링크랩라이센스에 의한 소프트웨어 거래의 경우 라이센스이용자에 의한 대금지급이 선행하고 그 이후에 비로소 계약조건의 검토가 행하여진다는 사정에 기하여 종래 판례법에서 그 강제력이 부인되어 오다가 정보 산업의 급속하게 성장하고 이에 따라 그 사용에 불가피하다는 현실적인 요구에 응하여 판례법은 물론 UCITA 라는 제정법에 의하여 그 강제력을 인정받게 되었다. UCITA 는 컴퓨터소프트웨어 등의 컴퓨터정보거래와 관련하여 체결되는 라이센스 계약의 모호한 법적 상태를 명확히 한다는 점에서 중요한 입법이라 평가된다. UCITA 는 쉬링크랩라이센스의 효력 문제와 동 라이센스에 적용될 법의 해결이라는 통일법으로서의 주요한 목적 중의 하나를 달성하고 있다. 더욱이 오늘날 우리 경제는 소위 정보혁명(information revolution) 이라 하는 또 다른 근본적 변화를 경험하고 있다.

• Journal of Digital Convergence
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• v.12 no.6
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• pp.155-160
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• 2014

When we collect marketing data, we can only obtain the bimonthly or quarterly data but the monthly data be available. If we evaluate or predict monthly market condition or establish monthly marketing strategies, we need to disaggregate these bimonthly or quarterly data to the monthly data. In this paper, for bimonthly or quarterly data, we introduce some methods of disaggregation to monthly data. These disaggregation methods include the simple average method, the growth rate method, the weighting method by the judgment of experts, and variable decomposition method using 12 month moving cumulative sum. In this paper, we applied variable decomposition method to disaggregate for bimonthly data of sum of electronics sales in a European country. We, also, introduce how to use this method to predict the future data.

• Journal of Digital Convergence
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• v.18 no.8
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• pp.29-35
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• 2020

This study identified the impact of augmented reality advertising on attitude toward advertising and memory according to the type of presence and flow level. The presence (cognitive, emotional, media) and flow level (high vs. low) of the augmented reality(AR) advertising were set as independent variables and analyzed by Two-Way MANOVA. As a result of the research, first, the augmented reality advertising attitude was positive when the emotional presence and flow level were high. Second, when the flow level is high, the ARM such as product attribute information increases, but when the flow level is low, the evaluation-oriented GRM increases. Third, emotional presence increases GRM when the flow level is high, but ARM increases when the flow level is low. Fourth, the memory effect was low regardless of the flow level. In the future research, it would be desirable to produce augmented reality advertisements through virtual brands in the generalization of research.

• Journal of Digital Contents Society
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• v.15 no.5
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• pp.595-602
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• 2014

Cloud computing is already well known paradigm that a support computing resource flexible and scalable to users as the want in distributed computing environment. Actually, cloud computing can be implemented and provided by virtualization technology. Also, various products are released or under development. In this paper, we built the teaching practice system using cloud computing and evaluated practical environment which constructed over a virtual machine. Virtualization-based cloud computing provides optimized computing resources, as well as easy to manage practical resource and result. Therefore, we can save the time for configuration of practice environment. In the view of faculty, they can easily handle the practice result. Also, those practice condition reuse comfortably and apply to various configuration simply. And then we can increase capabilities and availabilities of limited resources. Additionally, we measure the performance requirements for educational applications through evaluation of virtual-based teaching practical system in advance.

• Journal of Digital Convergence
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• v.9 no.2
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• pp.89-100
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• 2011

The purpose of this paper is to see whether a corporate's social activity has any influence on purchase intention and corporate image, and how it affects consumers' feelings with that correlation. This study empirically proves that the influence of purchase intention and corporate image can be different according to the corporate's social activities. The study suggested for a crucial marketing direction on a practical affairs level, along with a need of corporate social activities. Corporate social activities affects to build a positive corporate image, product image and purchase intention. When companies need to improve the corporate's image enhance, corporate social activities will be bring social and economic benefits and to be a very useful activity other than the corporate's communications activities. Therefore, corporate needs to pursue a more systematic and strategic social activities under a perception that a corporate social activities.

• Journal of radiological science and technology
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• v.42 no.4
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• pp.291-299
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• 2019

The International Electrotechnical Commission (IEC) has regulated the definition and requirements of the exposure index (EI). In this study, we calculated the EI of several image receptors in digital radiography system of two different manufacturers according to the method as per IEC, and evaluated the relationship with incident air kerma. To calculate the EI, w e obtained the characteristics curve of each image receptor by increasing the incident air kerma at RQA 3, 5, 7 and 9, respectively. As a result, there was no significant difference in the EI values between different image receptors of the same manufacturer, but EI values of different manufacturer was different despite the same air kerma was incident. Therefore, understanding the characteristics of the digital radiography systems is important in order to use EI as a tool for measuring and managing the radiation dose.

• Archives of design research
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• v.18 no.1 s.59
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• pp.39-48
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• 2005

In the age of digital culture, TV broadcasting is exercising more influence as a information and communication medium compared to past. With the appearance of satellite broadcasting service in 2002, the broadcasting environment became a diversified field of local TV, cable TV, satellite, internet, etc. and created the time of multi-media and multi-channel. This ongoing change of broadcasting environment made the passive audience of the past, active image makers and new accepters, participants and users of communications, who know how to choose and use media as the active centerpiece, The active acceptor as the centerpiece of channel selections has become the center of the broadcasting, whereby they pick up and enjoy their favorite TV programs and came to remember the list of their favorite channels and zap them finally. In this point of spotting their favorite channels and improving the degree of recognition for the channels, the development of the noticeable brand for a particular program has made a great contribution. The aim of this study, therefore, is to recognize the factors, which are important in the habits of watching TV and to develop professional brands for TV broadcasting programs. The range of the survey for this study was home news programs and broadcasting stations abroad, which were on air from March to May in 2004. The focus of the survey was universal and professional news programs. Through this study, it was ascertained that, in the case of news, developing a brand for an anchor as well as for a professional brand of TV program could be an important element.

• Journal of Digital Convergence
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• v.15 no.6
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• pp.121-132
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• 2017

In this study, there is a purpose of research to secure competitiveness through the effective utilization of intangible corporate resources of founded enterprises. For this research, we conducted a survey on the way the customers who used the products of the BI center and founders less than 7 years evaluated the founded company. Schmitt's empirical element was examined as a theoretical background, and it was examined whether these empirical factors and attitudes acted as a preprocess in the decision-making process as a repurchase intention. The Result of research is as follows. First, It clearly indicated that customer experience and search experience affected the degree of re-purchase. Second, customer's experience (use experience, search experience, contact experience) were grasped with significant influence on customer's attitude. Third, we discovered that customer's attitude had mediated between customer's experience (use experience, search experience) and re-purchase. This research suggests that if we manage empirical factors well, we can increase the degree of re-purchase and cope appropriately with the limitations of small and medium enterprises.

• Journal of the Korean Crystal Growth and Crystal Technology
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• v.24 no.4
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• pp.169-175
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• 2014

Digital ink-jet printing system has many advantages such as fast and fine printing of various images, high efficiency and low cost process. Generally digital ink-jet printing requires ceramic pigments of cyan, magenta, yellow and black with thermal and glaze stability above $1000^{\circ}C$ for the application of porcelain product design. In this study, pink-red colored $CaO-SnO_2-Cr_2O_3-SiO_2$ pigment was synthesized using solid state reaction. The synthesis conditions of $Ca(Cr,Sn)SiO_5$ pigment such as annealing temperature, amount of mineralizer and non-stoichiometric composition were optimized. Crystal structure and morphology of the obtained $Ca(Cr,Sn)SiO_5$ pigment were analyzed using XRD, SEM, PSA, FT-IR and effect of Cr substitution on the pigment color was analyzed using Uv-vis. spectrophotometer and CIE $L^*a^*b^*$ measurement.