• 전력전자학회:학술대회논문집
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• 전력전자학회 2011년도 전력전자학술대회
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• pp.124-125
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• 2011

현재 지능형 빌딩시스템에 도입되어 있는 스마트 분전반은 스마트 그리드 시스템과 연계하여 전력 수요를 분산시키는 기능 등 다양한 기능을 갖는다. 하지만 예측 불가능한 부하 종류와 운전 패턴에 따른 부하 불평형에 의해 발생하는 전력품질 저하, 전력기기 오작동 등에 능동적인 대처는 역부족이다. 따라서 본 논문에서는 지능형 분전반 운용 알고리즘을 통한 부하관리 시스템을 제안하여 부하 불평형에 따른 피해를 최소화하고자 한다.

• 산경연구논집
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• 제13권11호
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• pp.47-64
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• 2022

Purpose: This study's goal is to investigate how perceived risk of Japanese electronic product affect the negative emotion and the avoidance intentions. In addition, this is difference in the effect of perceived risk on negative emotions and avoidance intentions according to the presence or absence of substitutes. Research design, data and methodology: Perceived risks of Japan products are decided by four dimensions, they are economic risk, social risk, psychological risk and physical risk. The reach model is made by the theory of risk-avoid. We requested this survey to 5808 customers by panel and web site, received 559 replied. We used 528 questionnaires excluding unreliable data. For the analysis, smart PLS is used. Results: Psychological risk has influence on negative emotion and avoidance intension. Social risk and physical risk affected negative emotion, but did not directly affect avoidance intention. Economic risk affects avoidance intension, but it has no effect of negative emotion. The existence of Japanese products' substitute only effects the relationship of economic risk and avoidance intention. Conclusions: Korean consumers behavior their buying and using of Japan product as financial benefit and satisfaction, not only risk. It is suggested that Korean company should make and develop unique product with good price.

• 산경연구논집
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• 제10권5호
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• pp.49-58
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• 2019

Purpose - Consumer behaviors or decision-making process has been changing recently as the consumer environment, including mobile everyday life, has changed. In view of this changing consumer smart environment, this study aims to investigate structural relation about the influence omni-channel propensity and regulatory focus on consideration set formation. Research design, data, and methodology - In order to proceed with this study, we review previous studies and setting hypotheses. The hypothesis was verified through a survey that was conducted for university students with experience in purchasing in less than three months. With reference to previous studies, operational definition was made for the questionnaire design. From 2018 Nov. to 2019 Feb. Survey was conducted on the panel consumers who purchase item within that period. 315 collected survey data were used to verify hypotheses except the data that had incorrect values. This data were used for SPSS/AMOS for confirm hypothesis which developed by researcher. Results - The results of this study are as follows. First, Consumers were considering a more heterogeneous alternatives if they were more omni-channel propensity in the process of forming consideration set. Second, Consumers were more conscious of the price if they were more omni-channel propensity Third, Consumers were considering a more newness alternatives if they were more omni-channel propensity in the process of forming consideration set. Meanwhile, The results of the study on regulatory focus and consideration set relationships are as follows. Consumers were considering a more heterogeneous alternatives if they were more promotion focus tendency in the process of forming consideration set. Second, Prevention focus tendency were more conscious of the price in the process of considering alternatives. Third, Consumers were considering a more newness alternatives if they were more promotion focus tendency. Conclusions - Depending on the changing consumer environment, the omni-channel propensity was shown to influence the formation of the consideration set. Also, Regulatory focus of consumers significantly influence to formation of consideration set. this study also contributes to the development of the theory as well as the practical approach with understanding consumer decision process on smart(mobile) environment.

• The Journal of Asian Finance, Economics and Business
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• 제8권10호
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• pp.361-371
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• 2021

This research aims to analyze the effects of managerial overconfidence and corporate governance on investment decisions. Besides, it also tries to discover the effect of internal financing mediation between managerial overconfidence and corporate governance on investment decisions. This study employed panel data from 44 manufacturing companies from 2014 to 2019, out of a total of 117, thus the total observations are 264. The hypothesis was verified through structural equation modeling (Smart PLS 2). The study revealed as follows: 1) Managerial overconfidence has a positive and significant effect on internal financing, while corporate governance has a negative and significant effect on internal financing, 2) managerial overconfidence, internal financing, and corporate governance have a positive and significant effect on investment decisions, 3) internal financing partially mediated the effect of managerial overconfidence on investment decisions, However, internal financing does not mediate the effect of corporate governance on investment decisions. The findings in this study will help company managers implement good corporate governance to improve investment efficiency. In addition, managers can reduce the proportion of retained earnings and increase the proportion of dividend payout ratios, and increase the use of external sources of funds in making investments to minimize agency costs and manager's opportunistic behavior.

• Smart Structures and Systems
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• 제26권6호
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• pp.721-733
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• 2020

The present study investigates the employing of piezoelectric patches in active control of a sandwich plate. Indeed, the active control and optimal patch distribution on this structure are presented together. A sandwich plate with honeycomb core and composite reinforced by carbon nanotubes in facesheet layers is considered so that the optimum position of actuator/sensor patches pair is guaranteed to suppress the vibration of sandwich structures. The sandwich panel consists of a search space which is a square of 200 × 200 mm with a numerous number of candidates for the optimum position. Also, different dimension of square and rectangular plates to obtain the optimal placement of piezoelectric actuator/senor patches pair is considered. Based on genetic algorithm and LQR, the optimum position of patches and fitness function is determined, respectively. The present study reveals that the efficiency and performance of LQR control is affected by the optimal placement of the actuator/sensor patches pair to a large extent. It is also shown that an intelligent selection of the parent, repeated genes filtering, and 80% crossover and 20% mutation would increase the convergence of the algorithm. It is noted that a fitness function is achieved by collection actuator/sensor patches pair cost functions in the same position (controllability). It is worth mentioning that the study of the optimal location of actuator/sensor patches pair is carried out for different boundary conditions of a sandwich plate such as simply supported and clamped boundary conditions.

• The Journal of Asian Finance, Economics and Business
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• 제8권2호
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• pp.439-451
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• 2021

The study aims to investigate the process employed by companies to intentionally create market categories through implementation of product strategy. Much of the research on market category formation focuses on the spontaneous emergence of market categories, with a few studies focusing on the intentional creation of market categories. In the course of this study, I therefore sought to understand the logic by which companies intentionally create market categories, by treating the process through which market categories are formed as a sensemaking process, and by treating the behavior of a company intentionally forming a market category as an effort to manage this sensemaking process. In empirical study, we conducted an exploratory case analysis through content analysis of company press releases and consumer reviews. It is possible that market categories can be formed or changed if the way in which they are shared among market participants can be changed. In this study, we identified two sense-giving activities for the creation of market categories by firms as follows: (1) reorganizing market categories that flat-panel TV manufacturers in the North American market have attempted to form into subcategories of smart TVs, and (2) connecting them to surrounding categories through strategic labeling to establish new categories.

• Smart Structures and Systems
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• 제13권4호
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• pp.615-636
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• 2014

Aluminium Foam Sandwich (AFS) panels are becoming always more attractive in transportation applications thanks to the excellent combination of mechanical properties, high strength and stiffness, with functional ones, thermo-acoustic isolation and vibration damping. These properties strongly depend on the density of the foam, the morphology of the pores, the type (open or closed cells) and the size of the gas bubbles enclosed in the solid material. In this paper, the vibrational performances of two classes of sandwich panels with an Alulight(R) foam core are studied. Experimental tests, in terms of frequency response function and modal analysis, are performed in order to investigate the effect of different percentage of porosity in the foam, as well as the effect of the random distribution of the gas bubbles. Experimental results are used as a reference for developing numerical models using finite element approach. Firstly, a sensitivity analysis is performed in order to obtain a limit-but-bounded dynamic response, modelling the foam core as a homogeneous one. The experimental-numerical correlation is evaluated in terms of natural frequencies and mode shapes. Afterwards, an update of the previous numerical model is presented, in which the core is not longer modelled as homogeneous. Mass and stiffness are randomly distributed in the core volume, exploring the space of the eigenvectors.

• 마케팅과학연구
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• 제20권1호
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• pp.70-79
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• 2010

现在已有一些旨在解决韩国不道德消费行为的研究, 然而大部分研究把重心放在购买假冒伪劣产品或者入店行窃上. 服装的高额回报率和曾经的服装回扣被认为是时尚产业的问题领域. 然而, 很少研究者致力于这一问题的解决. 因此, 本研究目的在于, 通过使用一种混合的方法路径来探讨消费者零售借贷的经验. 实验一主要通过小组面谈的方式来探讨韩国消费者零售借贷的经验. 实验二通过在线调查的结果显示服装消费者对于零售借贷行为的态度. 调查结果促进了研究人员和从业人员对于零售借贷行为的理解, 同时也深入洞察了服装零售业中的零售借贷问题. 在研究1中, 我们把在过去一年中有零售借贷行为的人分成七组进行五次集中讨论. 参加了这次讨论的韩国消费者中, 有35个在大城市居住. 大部分消费者都是20来岁(21岁), 且以女性居多(24个). 大部分的参与者从一个零售商处购进一批服装, 然后对旧的衣物不是要求全额退款就是就是要求将旧的衣物更换成新的. 零售借贷行为的动机包括社会需要, 工作需要, 时尚需要和 "智能购物" 的理念. 与其他国家现有的研究的结论相似, 在分析时装商店的零售借贷现象时, 最经常被提到的原因是社会需要. 而消费者的道德价值观, 对大公司的态度, 以往的借贷消费经历, 也被认为是影响消费者的零售借贷行为的可能因素. 在研究2中, 收集数据的问卷是基于第一部分研究的成果和其他现有研究结果设计的. 问卷的问题主要关注消费者的道德信仰, 寻求刺激的倾向, 自我价值, 过去的零售工作经验, 零售贷款的经验, 以及他们的一些群体特征等等. 数据的收集是由首尔一家商业网络研究公司的在线调查小组来完成的. 为了保证样本的多样化和有效性, 该公司设计了这样的抽样配额(男: 女= 1:1, 20岁: 30岁: 40岁= 1:1:1, 零售经验: 没有零售经验= 1:3). 共有401个在前6个月有过购买服装经历的消费者参加了这次网上调查. 结果显示19.7%的受访者都表示他们曾经有过借贷购买时尚商品的经历. 在这些受访者中, 男性借贷人约占57%, 多于女性借贷人. 通过年龄的分布来看, x2 显示在拥有或者没有零售借贷经历的受访人之间存在着统计学上的差异: 有41.8%的受访者是在40岁的时候拥有零售借贷经历, 而那些没有零售借贷经历的受访者大约分布在20岁到40岁之间. 在收入方面, 拥有或者没有零售借贷经历的受访者之间也有很大的不同: 前者较于后者, 收入要高一些. T测试主要是在有或者没有零售借贷经验的受访者之间进行比较, 对比他们的时尚购物行为, 道德信念, 感觉寻求的倾向和对零售借贷行为的态度. 与那些没有借贷经验的受访者相比, 有经验者更趋向于频繁的购买时尚物品或者花费更多的钱用在购买时尚物品上. 有借贷购买经验的顾客往往比无经验者有更高的寻求新奇刺激的倾向. 一份回馈的分析表明对于时尚物品零售借贷购买的态度和顾客的道德信仰呈负相关, 但是与每月购买时尚物品的频率, 对新奇事物感觉趋向的走势以及过去的时尚物品零售借贷的经验呈正相关. 在这些变数之中, 过往的零售借贷经验是最重要的预测因素, 道德信念紧随其后. 本次研究作为初次尝试旨在了解零售借贷行为基础背后的动机和影响这些行为的要素. 这次研究的结果可以使我们对消费者零售借贷行为有更深一步的理解, 并为解决方法提供一个基础, 以帮助减少零售借贷行为和时装零售商店的不适当回扣. 这个结果也可以长期为消费者教育提供资料. 为了更好的理解时尚零售借贷行为, 未来还有更多的研究亟待进行.