• Structural Engineering and Mechanics
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• 제62권4호
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• pp.443-453
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• 2017

The performance of bolted side-plated (BSP) beams is affected by the degree of transverse partial interaction, which is a result of the interfacial slip caused by transverse shear transfer between the bolted steel plates and the reinforced concrete beams. However, explicit formulae for the transverse shear transfer profile have yet to be derived. In this paper, a simplified piecewise linear shear transfer model was proposed based on force superposition principle and simplification of shear transfer profiles derived from a previous numerical study. The magnitude of shear transfer was determined by force equilibrium and displacement compatibility condition. A set of design formulae for BSP beams under several basic load cases was also derived. Then the model was verified by test results. A worked example was also provided to illustrate the application of the proposed design formulae. This paper sheds some light on the shear force transfer mechanism of anchor bolts in BSP beams, and offers a practical method to evaluate the influence of transverse partial interaction in strengthening design.

• 한국추진공학회:학술대회논문집
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• 한국추진공학회 2004년도 제23회 추계학술대회 논문집
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• pp.137-140
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• 2004

주기적인 와류화염과 열방출 진동의 연관성에 대한 실험적인 연구가 수행되었다. 난류제트화염은 덤프 연소기에서 재순환 되는 뜨거운 생성물에 의해서 안정화되며, 큰 스케일의 주기적 와류가 음파에 의해서 제트화염에 부가되었다. 실제적인 연소기에서의 불안정 현상을 모사하기 위해 가진주파수와 실험변수들을 조절하였다. 본 연구의 목적은 원치 않는 열방출의 진동을 유도시키는 와류-열방출의 연관성을 분석하여, 연소불안정의 능동제어를 위해 사용될 수 있는 알맞은 연료분사 패턴을 조사하는 것이다. 주기적인 패턴을 측정할 수 있는 슐리렌 기법과 CH* chemiluminescence 기법이 사용되었으며, 실험결과는 와류 생성 사이클의 위상에 따라서 서로 비교되었다.

• Structural Engineering and Mechanics
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• 제10권6호
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• pp.517-532
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• 2000

A direct output feedback control scheme was recently proposed by the authors for single-story building structures resting on flexible soil body. In this paper, the control scheme is extended to mitigate the seismic responses of multi-story buildings. Soil-structure interaction is taken into account in two parts: input at the soil-structure interface/foundation and control algorithm. The former reflects the effect on ground motions and is monitored in real time with accelerometers at foundation. The latter includes the effect on the dynamic characteristics of structures, which is formulated by modifying the classical linear quadratic regulator based on the fundamental mode shape of the soil-structure system. Numerical result on the study of a $\frac{1}{4}$-scale three-story structure, supported by a viscoelastic half-space of soil mass, have demonstrated that the proposed algorithm is robust and very effective in suppressing the earthquake-induced vibration in building structures even supported on a flexible soil mass. Parametric studies are performed to understand how soil damping and flexibility affect the effectiveness of active tendon control. The selection of weighting matrix and effect of soil property uncertainty are investigated in detail for practical applications.

• 한국프랜차이즈경영연구
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• 제15권2호
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• pp.1-15
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• 2024

Purpose: Service quality plays an important role in the credibility of consumer behavior as it enhances brand loyality in hospitality business. The objective of this study is to determine the effects of service quality, positive emotion, brand affection, and brand loyalty in restaurant sector by applying the S-O-R model. The study also introduces a new integrated structural model that combines service quality's dimensions of physical quality, interaction quality, and outcome quality. Research design, data, and methodology: This study was analyzed in a quantitative way using the survey results of 395 customers who had experience of visiting restaurants. All constructs were measured with multiple items developed and validated in prior studies. In this study, SmartPLS 4.0 was used to evaluate the research model. The reliability, convergent validity, and discriminant validity of the measurement tool were verified. Result: Result was found that service quality(physical quality, interaction quality, outcome quality) had a positive effect on positive emotion and brand affection. Also both of positive emotion and brand affection had a positive effect on brand loyalty. This study contributes to the service quality literature and has practical managerial implications.

• International Journal of Internet, Broadcasting and Communication
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• 제16권1호
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• pp.80-85
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• 2024

The concept of single-modal digital art originated in the 20th century and has evolved through three key stages. Over time, digital art has transformed into multi-modal interaction, representing a new era in art forms. Based on multi-modal theory, this paper aims to explore the characteristics of interactive digital art in innovative art forms and its impact on user experience. Through an analysis of practical application of multi-modal interactive digital art, this study summarises the impact of creative models of digital art on the physical and mental aspects of user experience. In creating audio-visual-based art, multi-modal digital art should seamlessly incorporate sensory elements and leverage computer image processing technology. Focusing on user perception, emotional expression, and cultural communication, it strives to establish an immersive environment with user experience at its core. Future research, particularly with emerging technologies like Artificial Intelligence(AR) and Virtual Reality(VR), should not merely prioritize technology but aim for meaningful interaction. Through multi-modal interaction, digital art is poised to continually innovate, offering new possibilities and expanding the realm of interactive digital art.

• 한국강구조학회 논문집
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• 제10권3호통권36호
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• pp.437-449
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• 1998

합성형구조에서 콘크리트와 강재가 일체로 거동하기 위해서 전단연결재는 충분한 강성과 강도를 지니고 있어야 한다. 만약 콘크리트와 판형의 경계면에서 수직 또는, 수평방향으로 미끄러짐이 발생하지 않는다면 전단연결재는 무한강성으로 표현되어지고, 이상적으로 완전합성거동을 하게 된다. 그러나, 모든 전단연결재는 어느 정도의 범위내에서 유연성을 가지게 되며, 항상 불완전합성작용을 하게 된다. 본 논문에서는 3가지 방법에 의해서 불완전합성작용을 하는 합성형을 해석하는 실용적인 방법에 대하여 연구하였다. 미분방정식의 일반해로부터 유도된 강도매트릭스법과 경계부분의 스프링상수를 뼈대구조로 대체한 유한요소법, 가상일의 원리를 이용한 유한요소법의 3가지 방법에 의하여 합성형의 처짐특성을 고찰하였다. 또한, 불완전합성형에서 단면특성과 전단연결재의 스프링상수를 이용하여 합성형의 합성정도를 추정할수 있는 간이법을 제시하였다.

• 유통과학연구
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• 제14권12호
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• pp.99-105
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• 2016

Purpose - In the present study, it has become the most important necessity in our daily lives that consumers' psychological factors affect the use of smartphones, and it has been analyzed through behavioral economic approaches. In this respect, the present study is intended to apply the heuristic theory and the prospect theory among behavioral economics theories to examine how psychological factors affect consumers' product selection. Research design, data, and methodology - In the present study, using smartphone repurchase as a dependent variable, whether regulatory focus effects have interaction effects on behavioral economic theories and behavioral economic effects such as possession (ownership) effects, framing effects, and brand recollection. As an analysis method, questionnaire surveys conducted with university students in Incheon were examined through Two-Way ANOVAs using the SPSS23 package. Results - The analysis from the results are as follows. Using smartphone repurchase as a dependent variable, the main effects and interaction effects on two variables; satisfaction difference with product functions and positive framing variable were statistically significant. Using repurchase as a dependent variable was statistically significant, there was no interaction effect between the two variables; satisfaction difference with product functions and the difference of brands in possession. Using smartphone repurchase as a dependent variable, interaction effects on two variables; satisfaction difference with product functions and the lengths of product possession periods were not statistically significant. The results from the analyses of interaction effects of brand recollection and brands type were statistically significant in possession using repurchase as a dependent variable. The results from the analyses of the main effect of the brands type were statistically significant in possession using repurchase as a dependent variable. Conclusions - The implication of the present study is that it suggests the factors that became important for customers' smartphone purchase following the change in the meaning of smartphones from practical products in the past to hedonic products. Limitations of the present study are first, the study subjects are limited to students and the number of copies in questionnaires is only approximately 130, which is insufficient, so that the present study is not sufficient as a study for entire smartphone users.

• 한국산학기술학회논문지
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• 제16권4호
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• pp.2450-2464
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• 2015

본 연구는 교사의 창의적 교수행동 및 역할수행과 교사-학생 간 상호작용이 중학생의 문제해결능력을 미치는 영향을 분석하였다. 연구결과, 교사의 창의적 교수행동과 역할수행은 중학생의 문제해결능력에 유의한 영향을 미치는 것으로 나타났으며, 교사-학생 간 상호작용에 유의한 영향을 미치는 것을 알 수 있었다. 또한 교사-학생 간 상호작용은 중학생의 문제해결능력에 유의한 영향을 미치는 것을 알 수 있었으며, 교사의 창의적 교수행동과 역할수행은 중학생의 문제해결능력 사이에서 유의한 매개효과가 있음을 확인할 수 있었다. 이러한 연구결과는 교사의 창의적 교수행동 및 역할수행과 교사-학생 간 상호작용을 향상시킬 수 있는 교육 및 연수 프로그램이 필요함을 시사하며, 중학생의 문제해결능력에 도움을 줄 수 있는 학교교육의 이론적 실천적 함의로서 학교교육 발전에 많은 시사점을 제공한다.

• 융합경영연구
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• 제11권2호
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• pp.23-32
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• 2023

Purpose: This study examines the effect of full information disclosure on seller profit when there exists information asymmetry between sellers and buyers, focusing on the risk averseness of buyers. By investigating the interaction between product quality and perceived risk through online sales data, we attempt to figure out the incentive structure of full information disclosure specifically when buyers are risk-averse, so that we can suggest more feasible information disclosure strategy to sellers. Research design, data and methodology: Our empirical model analyzes the sales data of collectible goods from a major online seller using Poisson regression. In our model, we have specifically considered risk-averseness of buyers by estimating the interaction effect between the product quality and perceived risk on seller profit, aiming for a more precise empirical analysis on sellers' incentive structure of full disclosure. Results: Our empirical analysis strongly supports the effect of interaction between product quality and perceived risk, showing that the incentive for full disclosure is much stronger when product quality is higher, and vice versa. Therefore, sellers are strongly encouraged to voluntarily reveal product weaknesses when their product quality is higher than average, while it is more profitable to hide any product defects when quality claim is lower than average. Conclusions: This study supports the related literature by confirming economic incentives for full disclosure, and also supplements and strengthens previous studies by presenting that the effect of interaction between product quality and perceived risk strongly affects seller profit. Our unique finding supports both mandatory disclosure and voluntary disclosure arguments and presents practical implications to marketing managers by suggesting that seller's incentive for revealing weaknesses depends on the level of seller's product quality.

• 수산해양교육연구
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• 제26권2호
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• pp.284-295
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• 2014

The purpose of the study was to validate the components of practical collaborative competencies by analyzing the perceptions of corporate personnel on practical collaborative competencies. The study reviewed the theories of collaborative intelligence, collective intelligence, cooperative learning, and learning communities. Based on the results of the literature review, the study derived seven categories of participative motivation for group activities, ability to share thinking and consciousness, motivation to share experiences, ability to control emotion, ability to promote interaction, creativity, and collaborative performance as the core competencies. To validate the elements, survey was conducted for 186 corporate personnels. The results showed that the personnels perceived the following elements as important collaborative competencies: participative motivation for group activities, motivation to form participatory atmosphere, ability to manage conflict effectively, ability to form relationships, ability to form positive team atmosphere.