• 한국조리학회지
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• 제19권2호
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• pp.190-202
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• 2013

인터넷이 발달하고 대중화됨에 따라 소비자들은 지출에 앞서 온라인 내 타인의 정보를 반영하고 활용한다. 본 연구에서는 사회과학 실험을 통해, 레스토랑 방문 계획을 가진 소비자들이 인터넷에서 1) 정보의 작성자가 누구인지에 따라(일반 익명의 소비자 또는 전문가), 2) 정보의 방향성에 따라(긍정적인 것 또는 부정적인 것) 레스토랑 방문의도와 정보의 신뢰도에 차이가 있는지를 알아보았다. 연구목적에 부합되도록 4개의 시나리오를 작성하였다. SPSS WIN(v.16.0)을 이용하여 빈도분석과 t-test등으로 분석하였다. 2(긍정적 정보vs. 부정적 정보)*2(소비자 작성 정보 vs. 전문가 작성 정보) 실험디자인을 통해 본 연구에서는 정보 작성자에 따른 레스토랑 방문의도(p<.001)와 정보의 신뢰정도(p<.001)에 유의한 차이가 있음을 보였다. 또한 각각 긍정적 정보와 부정적 정보를 읽은 실험참가자 사이에 레스토랑 방문의도(p<.001)와 정보의 신뢰도(p<.01)에는 유의한 차이가 있음을 확인하였다. 그 밖의 연구 결과와 한계점, 후속 연구의 방향에 대해서도 논의하였다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제13권12호
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• pp.6097-6120
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• 2019

Online consumer reviews (OCRs) provide product information and recommendations especially pictures in reviews depict the true information about the product. This study investigates the influence of pictured reviews on online seller (for a particular product of a seller) rating with moderating effect of price, brand type (foreign vs local), goods type (experience vs search), and brand familiarity. Multiple robust linear regression analysis with moderation interaction and quadratic effect used to explain the relationship of the explanatory variables with the criterion variable. We collected cross-sectional data from the two most renowned Chinese online shopping platforms (B2C) of total 15,621 product links. Results show that higher number of reviews with a low ratio of picture reviews response negative effect on rating, whereas the lower number of reviews with a high ratio of picture reviews response positive effect on the rating. In overall picture in the reviews improve the online seller product rating. For the moderation effect, results show that price and brand familiarity have a positive interaction effect on the relation of pictured reviews and rating whereas experience goods have less negative effect comparing search goods. Finally, local brand has less negative interaction effect comparing foreign brand to pictured reviews and rating.

• 한국전자파학회논문지
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• 제27권4호
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• pp.350-357
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• 2016

본 논문에서는 5.8 GHz에서 동작하는 기생패치를 이용한 소형 메타구조 기반의 뮤-제로 영차공진 안테나를 제안한다. 제안된 안테나는 뮤-네거티브(MNG: Mu-negative) 전송선로의 직렬 인덕턴스와 커패시턴스를 사용하는 뮤-제로 영차공진 안테나이며, 간단한 구조의 기생패치를 추가함으로써 직렬 커패시턴스를 증가시켜 소형화 하였다. 추가된 기생패치는 기존의 직렬 커패시턴스에 추가적인 병렬로 커패시턴스를 만들어 공진 주파수를 결정하는 직렬 커패시턴스를 등가적으로 증가시킨다. 기생패치는 HFSS를 이용한 모의실험을 통하여 최적화되었다. 제안된 안테나는 0.59의 kr값을 가지며, 기존 뮤-제로 영차공진 안테나 크기 대비 24 % 소형화 되었으며, 92 %의 효율과 6.57 dBi의 이득을 보였다. 최종 설계된 안테나는 제작 및 측정되었으며, 측정 결과는 모의실험 결과와 잘 일치함을 확인하였다.

• 한국콘텐츠학회논문지
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• 제21권4호
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• pp.153-165
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• 2021

연구 목적은 조직 구성원의 정보보안 준수의도에 긍정적, 부정적 영향을 주는 선행요인을 찾는 것이다. 세부적으로, 연구는 준수의도에 부정적 영향을 미치는 걱정을 감소시키기 위한 선행 요인을 찾고, 걱정과 준수의도간의 부정적 관계를 피드백이 조절하는 것을 확인하고자 한다. 설문 대상은 정보보안 정책을 보유한 조직에 근무하는 직장인을 대상으로 하였으며, 구조방정식모델링을 기반으로 주효과 분석과 조절효과 분석을 실시한다. 연구 결과, 걱정은 준수의도에 부정적 영향을 미쳤으며, 경영진의 지원을 통해 높아진 조직문화가 걱정을 감소시키는 것을 확인하였다. 또한, 피드백이 걱정과 준수의도간의 부정적 영향 관계를 조절하는 것을 확인하였다. 연구의 시사점은 정보보안 기술 도입을 통해 발생한 걱정의 부정적 영향을 찾았고, 걱정을 완화하기 위한 방안을 제시하였다. 즉, 연구는 조직 내부의 정보보안 수준 향상을 위해 고려해야 할 전략 방향을 제시한다.

• 경영과학
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• 제28권3호
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• pp.95-112
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• 2011

The Internet has generated a number of online review sites where dissatisfied consumers can easily articulate their opinions and comments on products or services. Little attention, however, has been directed to investigating the relationship between negative electronic word-of-mouth (eWOM) and its critical determinants that affect consumers' purchasing behaviors. This study attempts to explore the influence of the key determinants of consumers' negative eWOM behaviors, including their social relationships online. The results show that tie strength is positively associated with the proposed determinants, such as information credibility, external search efforts, and product involvement. Further, we find that perceived risk plays a mediating role in the relationship between consumers' intention to spread eWOM and its key determinants.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2003년도 하계종합학술대회 논문집 V
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• pp.2753-2756
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• 2003

A convenient, tunable loop-gain negative impedance circuit that increases input impedance of a front-end in a bioimpedance measurement has been proposed. Since the proposed circuit comprises wide-band operational amplifiers, selecting operational amplifiers is easy, while an operational amplifier of proper bandwidth should be chosen to use conventional circuit. Also, since loop-gain can be controlled by a feedback resistor connected serially with a feedback capacitor, loop-gain is tunable with a potentiometer. The input impedance of the proposed circuit is two times larger than that of the conventional circuit. Furthermore, closed loop phase response of the proposed circuit is better than that of the conventional circuit or without a negative capacitance circuit. The implemeted, proposed circuit showed stable operation and a zero input capacitance.

• 한국IT서비스학회지
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• 제14권2호
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• pp.111-128
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• 2015

In this paper, we examined the effects of emotional and individual variables on flow in the usage of mobile application. We selected four relevant emotional and individual factors such as positive affect, negative affect, addiction and habituation. We also attempted to figure out the moderating role of communication in the effect of positive affect, negative affect, and addiction on the flow. For empirical analysis, we surveyed real users of mobile application and applied PLS (Partial Least Square) methodology for SEM (Structural Equation Modeling). As a result, we found that positive affect, addiction, and habituation have significant and positive impact on the flow. Furthermore, we also found that the moderating effects of communication on the relationships between positive/negative affect and communication are significant. Our findings provide important theoretical grounds for the effects of human behavior and emotion on the flow of mobile applications. Lastly, we also suggest significant managerial implications for the development mobile applications industry.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2001년도 춘계학술대회 논문집 센서 박막재료
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• pp.35-37
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• 2001

The Al etching was studied employing negative ions generated in the downstream $Cl_2$ plasma. In order to etch the Al film practically on an insulator covered electrode coupled with RF power, reduction of the negative self bias voltage (Vdc) was examined using a magnetic filter which trapped electrons. Addition of $SF_6$ and $H_2$ to a $Cl_2/BCl_3$ mixture reduced significantly Vdc.

• Journal of Information Technology Applications and Management
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• 제19권2호
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• pp.233-247
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• 2012

There are so many studies on perceived risk and purchasing intention. But the results of those studies were inconsistent; some studies showed the positive effect of perceived risk on purchasing intention; others showed the negative effect. This research supposed that the inconsistence of studies resulted from the difference of group innovativeness and set up research hypotheses : among users from the lower innovativeness group, perceived risk has a negative effect on purchasing intention, but from the higher group, perceived risk has a positive effect on purchasing intention. We compared Internet shopping mall users of South Korea representing low innovativeness with those of China representing high innovativeness. The results provided that among South Korean users, perceived risk had the statistically insignificant negative effect on purchasing intention, but among Chinese users, it had the statistically significant positive effect on purchasing intention. Additionally, this study found that perceived risk influenced users' fun which in turn influenced purchasing intention.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2008년도 하계종합학술대회
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• pp.439-440
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• 2008

A high-speed DCO is proposed that uses the negative-skewed delay scheme. The DCO consists of a ring of inverters with each PMOS transistor driven from the output of 3 earlier stage through a set of minimum-sized pass-transistors. The digitization of negative-skewed delay is achieved by selecting pass-transistors turned on and digitizing the gate voltages of the selected pass-transistors. The proposed 7-stage DCO has been simulated using 1.8V, $0.18\;{\mu}m$ TSMC CMOS process to obtain a resolution of 3ps and an operation range of 2.88-5.03GHz.