• 마케팅과학연구
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• 제20권2호
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• pp.179-187
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• 2010

对营销和广告经理来说, 理解消费者的偏好和使用的媒体类型是非常有必要的, 尤其是在如今市场细分的情况下. 清晰的理解能帮助经理更有效的选择合适的媒体. 而且由于性格特征的不同, 个人对媒体类型的选择和使用都不相同. 本文测试了一个性格特征, 即感知追求. 这是在测试 "新" 媒体偏好和使用的文献中尚未出现的. 感知追求是被定义为 "一种对变化, 新颖和复杂的感觉的需要和经历. 以及为承担这些经历愿意承受生理的和社会的风险" (Zuckerman 1979). 根据文献回顾, 我们提出了6个假设. 我们尤其关注使用与满足理论(Katz 1959), 这个理论解释了为什么人们选择媒体类型和他们使用不同媒体类型的动机的原因. 目前的理论表明高感知追求者(HSS), 由于他们对新颖, 激励和非传统的内容和想象的需要, 他们会更多的使用新媒体. 因此, 我们假设高感知追求者比低感知追求者(LSS)(H2a)或中等感知追求者(MSS)(H2b)会更多的使用网络而不是广播(H1a)或印刷媒体(H1b). 另外, 高感知追求者有更多的社交活动及朋友, 因此他们会比低感知追求者(a) 和中等感知追求者(b)更多的使用社交网络网页例如Facebook/MySpace(H3) 以及聊天室(H4). 感知追求者可以显示出一系列的行为包括抑制解除. 我们认为具有高水平去抑制的人们比低水平或中等水平的人们会更多的使用社交网络如Facebook/MySpace (H5) 和聊天室(H6). 我们的数据来源于对参加极限运动的参与者的网上调查. 为得到这个群组的信息, 我们使用雪球样本技术的提高版, 即连锁推荐方法来选择应答者. 这种方法被认为是对隐藏人群进行有效估算的方法(Heckathorn, 1997). 最终的有效样本包括1108名应答者. 主要是年轻人(56.36%在34岁以下), 男性(86.1%)和中产阶级(58.7%的家庭收入超过50,000美元). 我们用这个样本来进行感知追求的研究. 我们用简要感知追求量表来测试感知追求(Hoyle et al. 2007). 我们用自我报告使用过的不同媒体类型来测量媒体使用. 结果并不支持H1a和b. 高感知追求者并没有更多的使用网络这样的媒体. 事实上, 同其他的媒体类型相比, 这个平均水平是较低的. 高感知追求者使用最多的媒体类型时印刷媒体, 这说明了一种对主流的反抗. 结果支持H2a和b. 高感知追求者比低感知或中等感知追求者更多的使用网络. 进一步的分析揭示了在高感知和低感知追求者之间在使用印刷媒体方面有显著不同. 高感知追求者在他们感兴趣的极限运动方面会追求更专业的印刷出版物. 假设3a和b 揭示了高感知追求者比低感知或中等感知追求者更多的使用Facebook/MySpace. 在使用聊天室方面低感知和高感知追求者之间没有显著差距. 所以结果也不支持假设H4a, 但是H4b的结果是显著的. 不同抑制解除水平的应答者被认为使用Facebook/MySpace 和聊天室的水平也不同. 去抑制水平高比低水平或中等水平的使用Facebook/MySpace的水平高. 所以H5a和b 被支持. 类似的, H6b也被支持. 去抑制水平高的人们使用聊天室的概率显著多于中等水平的但并不多于低水平的人们(H6a). 这些结果为管理者提供了一些有趣的见解. 第一, 尽管高感知追求者比低感知或中等感知追求者更多的使用在线媒体, 但他们使用在线媒体仍然少于印刷或广播媒体. 广告执行者们不应该对这个重要的客户群过分的强调在线媒体. 第二, 社交媒体, 例如Facebook/MySpace和聊天室会是接近这个群体的有潜力的方法. 最后, 对去抑制水平高的群体, 有公共关系方面的启示. 这些个体更倾向于一些社会风险的行为. 这些直接的启示包括因特网捕食者和未来的雇主. 本研究的一个不足是受访者都是参与极限运动的. 这本身就是一个高感知追求者活动. 更大范围的人群需要被测试.

• ETRI Journal
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• 제24권4호
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• pp.280-289
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• 2002

In this work, we present a novel approach to the bit allocation problem that aims to minimize overall distortion subject to a bit rate constraint. The optimal solution can be found by the Lagrangian method with dynamic programming. However, the optimal bit allocation for block-based interframe coding is practically unattainable because of the interframe dependency of macroblocks caused by motion compensation. To reduce the computational burden while maintaining a result close to the optimum, i.e., near optimum, we propose an alternative method. First, we present a partitioned form of the bit allocation problem: a "frame-level problem" and "one-frame macroblock-level problems." We show that the solution to this new form is also the solution to the conventional bit allocation problem. Further, we propose a bit allocation algorithm using a "two-phase optimization technique" with an interframe dependency model and a rate-distortion model.

• 디지털융복합연구
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• 제6권4호
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• pp.73-81
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• 2008

Market penetration of media capital and with domestic broadcasting and communication fusion affect from the contents competitive situation which is general, the digital conversion of ground group broadcasting which follows in like this change tried to point out the hereafter direction of broadcasting contents industry with Korean-American FTA compromises. Further with role of the program heightening of competitiveness plan for the ground group digital contents activation of local broadcasting and loca broadcasting accomplishes the funeral of succession development and area public opinion integration of politics, economy and culture of the community and being understood for a harmony, and proposed a politic alternative in the Broadcast Communications Commission which starts newly and Local Broadcasting Developmental Commission.

• ETRI Journal
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• 제33권1호
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• pp.110-120
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• 2011

As information technology rapidly develops and the period required to enter new technology shortens, there emerges a wide variety of alternatives for consumers. When there are many alternatives in the market, users choose after making comparisons. This process of making comparisons is our research key. We established a research model to find a mixed effect that comes from new attitudes to technology adoption and alternative's continuous usage intention. The effect is revealed through a relative attractiveness (RA) factor to explain a user's process of comparison. We empirically test our research model in the new media services, such as mobile TV, web TV, and mobile IPTV. According to our research results, a continuous usage intention of an existing technology is an important factor to explain the adoption of a new technology. So, the contribution of our research is in finding a role for the RA factor in research in new technology adoption.

• 한국실내디자인학회논문집
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• 제15권4호
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• pp.147-155
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• 2006

Recently, because of the rapid remarkable development of the digital media, contemporary society is continuously extending and changing over the limitation of the human recognition. But in the field of architectural form creation, a diagram used in the design process of the past is not enough to reflect a complication, contingent and multiple quality of these contemporary society. So, to reveal the rhizomorphous and non-hierarchial qualify of the contemporary digital network society, architecture became necessary to use the diagram with digital media which have various possibilities to present architect's abstract images that the diagram of the past couldn't do. Therefore, this study proposes that the process for creating architectural form with the digital diagram be a alternative to conquest the limits of contemporary architecture, so it present the complicate and contingent quality of contemporary society. Furthermore, it examines the quality and possibility of the diagram by understanding the creation and transformation of the digital diagram, and how to apply to the actual architecture process of the creating form.

• The Plant Pathology Journal
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• 제38권6호
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• pp.673-678
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• 2022

Vapours from origanum oil (O) and thyme oil (T) were applied to the four soil-borne strawberry pathogens Fusarium oxysporum f. sp. fragariae, Colletotrichum fructicola, Lasiodiplodia theobromae, and Phytophthora cactorum, causing Fusarium wilt, anthracnose, dieback, and Phytophthora rot, respectively. Increasing T vapour doses in the presence of O vapour strongly inhibited mycelial growths of the four pathogens and vice versa. When mycelia of F. oxysporum f. sp. fragariae and P. cactorum exposed to the combined O + T vapours were transferred to the fresh media, mycelial growth was restored, indicating fungistasis by vapours. However, the mycelial growth of C. fructicola and L. theobromae exposed to the combined O + T vapours have been slightly retarded in the fresh media. Prolonged exposure of strawberry pathogens to O + T vapours in soil environments may be suggested as an alternative method for eco-friendly disease management.

• Nuclear Engineering and Technology
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• 제55권2호
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• pp.391-407
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• 2023

This article provides a survey of wet (aqueous) methods for recovery, separation, and purification of uranium from fission products in carbonate solutions during the reprocessing of spent nuclear fuel and methods for removal of radionuclides from alkaline radioactive waste. The main methods such as selective direct precipitation, ion exchange, and solvent extraction are considered. These methods were compared and evaluated for reprocessing of spent nuclear fuel in carbonate media according to novel alternative non-acidic methods and for treatment processes of alkaline radioactive waste.

• ETRI Journal
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• 제32권5호
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• pp.819-822
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• 2010

Supporting QoS over multihop wireless mesh networks is difficult because end-to-end delay increases quickly with the increasing number of hops. This paper introduces a novel multichannel time-division multiple-access media access control (McTMAC) protocol that can help to efficiently reduce delay over multihop networks. Performance evaluation results demonstrate that McTMAC outperforms existing alternative protocols. The max-delay can be reduced by as much as 60% by using McTMAC.

• Communications for Statistical Applications and Methods
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• 제11권2호
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• pp.329-343
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• 2004

With advancement of computer and network, world wide web(WWW) as a medium of information communication is generalized in many fields. In educational aspect, applications of WWW as alternative media for class teachings or printed matters are increasing. In this article, we demonstrate a web-based electronic text on the 'probability and statistics' which is one of six fields of mathematics in the 7th curriculum. This text places importance on comprehension of concepts of probability and statistics as an applied science.

• Journal of Magnetics
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• 제1권2호
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• pp.86-89
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• 1996

The dc magnetron sputter deposited (Pt/Co/Pt/Ni) multilayers which exhibited Curie temperatures in the range of 150-$300^{\circ}C$ were studied as possible alternative multilayers for magneto-optical recording to the widely studied Co/Pt, whose Curie temperatures are in the range of 200~$400^{\circ}C$. The Coercivities of these multilayers were between 450 Oe and 800 Oe. These multilayers exhibited comparable magnetic and magneto-optical properties to Co/Pt multilayers with enhancement of the Kerr rotation at lower wavelengths and negligible Kerr ellipticity over a wide range of the spectrum (4000~7000$\AA$ ).