• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2007년도 추계학술대회 논문집
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• pp.63-66
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• 2007

Reformers which produce hydrogen from natural gas are essential for the operation of residential PEM fuel cells. For this purpose, steam-methane reforming reactions with Ni catalysts is primarily utilized. Commercial Ni catalysts are generally made to have porous pellet shapes in which Ni catalyst particles are uniformly dispersed over Alumina support structures. This study numerically investigates the reduction of catalyst effectiveness due to the mass transport resistances posed by porous structures of spherical catalyst pellets. The multi-component diffusion through porous media and the accurate kinetics of reforming reaction is fully considered in the numerical model. The preliminary results on the variation of the effectiveness factor according to different operation conditions are presented, which is planned to be used to develop correlations in future studies.

• Asia pacific journal of information systems
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• 제26권1호
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• pp.124-142
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• 2016

Companies operating in social network platforms continue to improve and expand their marketing techniques. This study examines the practice of "gating", which involves virtual barriers between social network users and company content. Gates demand mandatory user endorsements, in the form of a Facebook "Likes", Twitter "retweets" etc., to gain access to company content, such as coupons and rewards,. Gating practices demand a mandatory endorsement before any content consumption takes place. Thus, while user endorsements are assumed to arise voluntarily from trusted known sources, gating practices would appear to violate this assumption. However, whether this violation lessens the effectiveness of gating practices still requires empirical validation. We investigate this question through the use of a unique panel data set that includes data on "like" endorsements obtained from a number of real-world Facebook business pages. Results of the study show that gating practices are effective for endorsement solicitation; however, gates may interfere with more traditional marketing activities.

• Interaction and multiscale mechanics
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• 제6권2호
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• pp.107-125
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• 2013

A strain smoothing meshfree formulation with stabilized conforming nodal integration is presented for modeling the consolidation process in saturated porous media. In the present method, nodal strain smoothing is consistently introduced into the meshfree approximation of strain and pore pressure gradient variables associated with the saturated porous media. Meanwhile, in order to achieve a consistent numerical implementation, a smoothing approximation of the meshfree shape function within a nodal representative domain is also proposed in the stiffness construction. The resulting discrete system of equations is all expressed in smoothed nodal measures that are very efficient for numerical evaluation. Subsequently the space-time fully discrete equations are further established by the generalized trapezoidal rule for time integration. The effectiveness of the proposed meshfree consolidation analysis method is systematically illustrated by several benchmark problems.

• 스마트미디어저널
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• 제11권8호
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• pp.29-36
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• 2022

디지털 미디어를 활용한 스마트 광고는 지난 수년간 매우 활발한 연구 분야로 자리하고 있으며 끊임없이 새로운 형태의 스마트 광고가 등장하고 있다. 본 논문은 스마트 광고의 한 형태인 래플(Raffle)광고에 대한 이해의 틀을 마련하고자 광고메시지 유형과 브랜드 친숙도의 상호작용 효과에 대해 다루고 있다. 본 연구의 가설을 검증하기 위해 2(래플광고 메시지 표현 유형: 한정된 시간vs. 타인의 응모현황) × 2(브랜드 친숙도 수준: 고 vs. 저) 실험설계를 적용하였다. 연구결과 광고메시지 표현 유형이 래플광고효과에 미치는 영향은 브랜드 친숙도 수준에 따라 달라지는 것으로 나타났다.

• International journal of advanced smart convergence
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• 제11권3호
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• pp.72-78
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• 2022

The aim of this research is to improve the effectiveness of digital media advertising because current advertisements -in digital signage - indiscriminately appeals to the general public rather than to a specific target. In order to deliver efficient and customized advertisement information, an IoT human body detection sensor mounted on digital signage detected human faces and then classified them firstly by gender. The digital signage here is a smart digital signage that can analyze facial signals, discriminate them based on patterns, and apply the extracted data by displaying the corresponding information to the user. In addition, by identifying the customer's location approaching the smart digital signage and displaying the optimized content information for the customer's location through an algorithm, the digital signage can dramatize the advertisement Thus, this is a study meant forimproving information efficiency while reducing noise and driving power waste generated from unnecessary digital information reproduction.

• 교육시설
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• 제2권1호
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• pp.7-14
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• 1995

The importance of church school education is becoming more emphasized. To maximize the effectiveness and efficiency of church school education, frequent utilization of instructional media is more desirable. Systematic approach to media utilization will be developed by the extabilishment of church media center. The purpose of this study was to review the concept and components of church media center and to survey the current status and hope for the facility of church media center. For the survey the 400 questionnaries were distributed to pastors or missionaries who are responssible for education, or personnels in church media center in Korea. The churches that they belong to have above approximately 500 church members. Among the distributed questionnaires, the 202 were collected. The results of the survey are as follows. The printed media and the AV media were managed separately in most churches. Many church media center was shared the space with other programs. The space was allocated mainly for storage. Most respondants hoped that they have a variety of areas in their churches. Many church media center have no separation between the area for the adults and that for children. However, most respondants hoped the separation of that areas. Followings are suggestions for the plan of church media center facilities. The space only for the church media center should be allocated. Church media center should be located in the first floor of the building as soon as possible. (If there is elevators in the building, it may be located above first floor). If enough space for the church media center is allocated, the areas for the adults and children should be separated by partitions or separate room. The space should consist of various areas like circulation area, reading area, working area for the personnel, production area, and storing area.

• 디지털융복합연구
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• 제14권3호
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• pp.105-114
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• 2016

미디어환경의 급변에 따라 최근 광고시장에서는 전통매체의 영향력이 점차 감소되고 PC 기반 인터넷, 모바일미디어, 소셜미디어 등의 뉴미디어를 활용한 프로모션의 성장이 두드러지고 있다. 특히 소비자가 상시적으로 접근할 수 있는 디지털미디어를 전통매체와 결합하여 활용하는 마케팅커뮤니케이션 활동이 가능해 짐으로써 교차광고(또는 크로스미디어광고) 전략이 새로운 마케팅환경에서의 효과적인 소구기법으로 크게 주목 받고 있다. 이에 본 연구는 온-오프라인 교차광고의 효과에 있어 제품관여도와 매체간 연계속성, 그리고 성별이 광고 노출 후의 브랜드태도와 행동적 의향에 어떤 영향을 미치는지 실증분석하고자 하였다. 실험설계상으로는 내적 타당성의 확보를 위해 가상의 제품을 정하고, 제품관여도와 매체간 연계속성이란 두 독립변인을 조작하여 실험광고물을 제작한 후 20~30대 성인 남녀를 대상으로 실험조사를 실시하였다. 분석 결과, 제품관여도와 매체간 연계속성의 상호작용이 성별의 조절효과에 따라 브랜드 태도와 행동적 의향에 유의미한 영향을 미치는 것으로 나타났다. 이 같은 연구결과를 토대로 이론적 실무적 시사점을 논의하고 후속연구의 방향성을 제안하였다.

• 한국콘텐츠학회논문지
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• 제10권9호
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• pp.478-486
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• 2010

많은 지방전문대학들이 온 오프라인 매체를 활용하여 대학을 홍보하고 있으나 홍보매체에 대한 효과를 검증하고 효율성을 극대화할 수 있는 구체적인 홍보 방안에 대한 연구는 부족한 실정이다. 본 연구는 지방전문대학에서 실시하는 다양한 홍보매체 중에서 인터넷 매체의 중요성을 대학신입생을 대상으로 설문조사한 결과를 제시하였다. 연구결과, 지방전문대학 신입생들은 온라인 매체의 중요성이 오프라인 매체보다 낮았으며, 추가모집시 여학생들의 인터넷 입시사이트 활용도가 높았다. 그리고 전문계 고등학교 학생들은 수시, 인문계 고등학교 학생들은 추가모집 시기에 인터넷 매체의 활용도가 높았으며, 대학홈페이지의 경우 추가모집 시기에 활용도가 다른 모집시기에 비해 가장 낮은 것으로 나타났다.

• 한국실내디자인학회논문집
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• 제13권5호
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• pp.114-124
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• 2004

Most previous studies, in general, related to housing needs have analyzed the data from self-administered survey or interview using questionnaire or simple 2D floor plan. This study was Intended to suggest how to increase the reliability and effectiveness of such survey methods in examining the residents' housing needs. In order to accomplish the purpose, the two kinds of surveys using Web based VR media and typical questionnaire were peformed. The same questions were used for these two surveys, and they included the furniture characteristics, use of each room, adjustment of room size, preferences for interior colors, preferred furniture in living room, space layout of floor plan, housing life style, and preference for housing characteristics. The answer differences between these two were analyzed. The subjects were 402 housewives who lived in apartment houses in Haeundae, Busan. Finding were as follows: first, the media method was more likely to be effective than typical questionnaire survey in explaining housing needs for the adjustment of room size in housing unit plan. Second, the media method was more realistic and reliable than the other in comprehending the needs for the interior colors. Last, the VR media tended to be more effective than the other in understanding the space layout of floor plan. This research sheds light on the utilization of visual instrument for the analysis of needs related to space use.

• International Journal of Advanced Culture Technology
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• 제8권2호
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• pp.116-128
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• 2020

In this study, we introduce a multi-modal mixed reality (MR) application for advertising the main touristic landmarks on Jeju Island, and evaluate its effectiveness based on the Technology Acceptance Model (TAM) with a focus on the user's involvement in Korean culture (K-Culture). Specifically, we deployed several stimuli to enable users to retrieve information, visualize a variety of heritage content such as text, images, videos, virtual artifacts, and immerse in a VR environment to experience the heritage locations. The results of the online survey with 436 participants showed that for consumers with low K-Culture involvement, Perceived Usefulness and Perceived Ease-of-Use did not affect their Intention to Visit the island. Still, it had a significant impact on their Intention to Use the application. On the other hand, for the group with high K-Culture involvement, Perceived Usefulness had no effect on the Intention to Use and Intention to Visit. However, Perceived Ease-of-Use had a significant impact on their Intention to Use the application and Intention to Visit Jeju Island. Therefore, when user involvement in K-Culture is high, convenience of use has played a significant role in sensory media usage and the intention to visit, regardless of the usefulness of the mixed reality content. In contrast, users with low K-Culture involvement primarily focused on the functional aspects of the application. These findings open the path for follow-up studies on K-Culture involvement and immersive media tourism marketing, which will benefit digital tourism marketing and Korea's tourism industry.