• 한국실내디자인학회논문집
• /
• 제22권2호
• /
• pp.131-139
• /
• 2013

The purpose of this study is to propose a new direction for color schemes of city signages to provide psychological stability to business owners and improve business value. Types of city sign color schemes and Feng Shui awareness of business owners were examined. Color schemes for signs were proposed, reflecting city landscape colors, color perception theory, and the Feng Shui Sangsaeng Sanggeuk theory. Results of the study can be summarized as follows. First, in order to secure colorscape quality of existing city buildings, signs should be small and consist of only three or fewer colors. Second, existing signage colors and the Feng Shui ideas of business owners have something in common with the five traditional cardinal colors. Thus, it can be interpreted that Feng Shui ideas are deeply rooted in the color use awareness of the Korean people. Third, background colors of signages can reflect the idea of innate Sangsaeng according to the Bonmyeonggung of business owners. The concept of acquired Sanggeuk can also be applied to other design elements such as characters. Fourth, as a second choice according to the function of sign, city landscape or preference of business owner, etc., the background color can remain a color of Sangsaeng, while other design elements such as characters can use a color scheme corresponding to Bihwasaek. Fifth, signs can create a statement and stand out using lightness contrast or saturation contrast theories. A variety of sign color schemes are also possible just by altering the lightness and saturation levels.

• Steel and Composite Structures
• /
• 제28권5호
• /
• pp.589-606
• /
• 2018

The previous studies reflected the significant effect of neutral-axis position and coupling of in-plane and out-of-plane displacements on behavior of functionally graded (FG) nanobeams. In thin FG beam, this coupling can be eliminated by a proper choice of the reference axis. In shear deformable FG nanobeam, not only this coupling can't be eliminated but also the position of neutral-axis is dependent on through-thickness distribution of shear strain. For the first time, in this paper it is avoided to guess a shear strain shape function and the exact shape function and consequently the exact position of neutral axis for arbitrary gradation of higher order nanobeam are obtained. This paper presents new methodology based on differential transform and collocation methods to solve coupled partial differential equations of motion without any simplifications. Using exact position of neutral axis and higher order beam kinematics as well as satisfying equilibrium equations and traction-free conditions without shear correction factor requirement yields to better results in comparison to the previously published results in literature. The classical rule of mixture and Mori-Tanaka homogenization scheme are considered. The Eringen's nonlocal continuum theory is applied to capture the small scale effects. For the first time, the dependency of exact position of neutral axis on length to thickness ratio is investigated. The effects of small scale, length to thickness ratio, Poisson's ratio, inhomogeneity of materials and various end conditions on vibration and buckling of local and nonlocal FG beams are investigated. Moreover, the effect of axial load on natural frequencies of the first modes is examined. After degeneration of the governing equations, the exact new formulas for homogeneous nanobeams are computed.

• 한국소성가공학회:학술대회논문집
• /
• 한국소성가공학회 2004년도 제5회 압연심포지엄 신 시장 개척을 위한 압연기술
• /
• pp.175-183
• /
• 2004

In hot strip rolling, a capability for precisely predicting roll force is crucial for sound process control. In the past, on-line prediction models have been developed mostly on the basis of Orowan's theory and its variation. However, the range of process conditions in which desired prediction accuracy could be achieved was rather limited, mainly due to many simplifying assumptions inherent to Orowan's theory. As far as the prediction accuracy is concerned, a rigorously formulated finite element(FE) process model is perhaps the best choice. However, a FE process model in general requires a large CPU time, rendering itself inadequate for on-line purpose. In this report, we present a FE-based on-line prediction model applicable to precision process control in a finishing mill(FM). Described was an integrated FE process model capable of revealing the detailed aspects of the thermo-mechanical behavior of the roll-strip system. Using the FE process model, a series of process simulation was conducted to investigate the effect of diverse process variables on some selected non-dimensional parameters characterizing the thermo-mechanical behavior of the strip. Then, it was shown that an on-line model for the prediction of roll force could be derived on the basis of these parameters. The prediction accuracy of the proposed model was examined through comparison with measurements from the hot strip mill.

• 경영과정보연구
• /
• 제32권4호
• /
• pp.103-126
• /
• 2013

기업현장에서 현직교육훈련에 대한 요구가 점점 커지고 있고, 많은 기업들이 현직교육훈련을 실시하고 있거나 추진을 계획하고 있다. 더욱이 최근 기업은 우수인재를 확보 유지를 하기 위해서 기업차원에서 다양한 노력을 기울이고 있다. 하지만 실제구성원들이 어떤 이유에서 현직교육훈련을 선택하고, 이를 시행하는데 어떤 어려움을 겪고 있으며, 성과에 대해서 어떻게 생각하고 있는지에 대한 정보는 미미한 실정이다. 본 연구는 이러한 문제의식을 바탕으로 구성원의 관점에서 현직교육훈련 참여동기 요인을 찾아보고, 현직교육훈련을 선택하는데 영향을 주는 요인을 현직교육훈련 유형 및 통합적인 관점에서 밝히고자 하였다. 분석 결과, 구성원들이 현직교육훈련 참여강도에 영향을 미치는 변인은 OJET 유형 요인, 담당업무 요인, OJET 참여이유 요인, 기업환경 요인 그리고 개인특성 요인들이 이에 유의한 변인으로 밝혀졌다. 분석결과를 기초로 해서, 본 논문은 기업차원에서 현직교육훈련 참여를 활성화할 수 있는 정책적, 제도적 모색방안을 제시하였다.

• 디지털산업정보학회논문지
• /
• 제15권4호
• /
• pp.197-212
• /
• 2019

The purpose of this study is to identify the maturity stages of venture firms through classification analysis, which is widely used as a big data technique. Venture companies should develop a competitive advantage in the market. And the maturity stage of a company can be classified into five stages. I will analyze a difference in the growth stage of venture firms between the survey response and the statistical classification methods. The firm growth level distinguished five stages and was divided into the period of start-up and declines. A classification method of big data uses popularly k-mean cluster analysis, hierarchical cluster analysis, artificial neural network, and decision tree analysis. I used variables that asset increase, capital increase, sales increase, operating profit increase, R&D investment increase, operation period and retirement number. The research results, each big data analysis technique showed a large difference of samples sized in the group. In particular, the decision tree and neural networks' methods were classified as three groups rather than five groups. The groups size of all classification analysis was all different by the big data analysis methods. Furthermore, according to the variables' selection and the sample size may be dissimilar results. Also, each classed group showed a number of competitive differences. The research implication is that an analysts need to interpret statistics through management theory in order to interpret classification of big data results correctly. In addition, the choice of classification analysis should be determined by considering not only management theory but also practical experience. Finally, the growth of venture firms needs to be examined by time-series analysis and closely monitored by individual firms. And, future research will need to include significant variables of the company's maturity stages.

• 대한조선학회지
• /
• 제13권1호
• /
• pp.1-9
• /
• 1976

Using the computer programs for calculation of natural vibrations of ship's hull developed by the authors et al., an investigation into influences of various parameters on the accuracy of calculation was done through example calculations of a 30,000 DWT petroleum products carrier M/S Sweet Brier built by Korea Shipbuilding and Engineering Corporation. The methodical principles employed for the computer program development are as follows; (a) the ship system is reduced to an equivalent discrete elements system conforming to Myklestad-Prohl model, (b) the problem formulation is of transfer matrix method, and (c) to obtain solutions an extended $G\ddot{u}mbel's$ initial value method is introduced. The scope of the investigation is influences of number of discrete elements, choice of significant system parameters such as rotary inertia, bending stiffness and shear stiffness, and simplification of distributions of added mass and stiffness as trapezoidal ones referred to those of midship section on the calculation accuracy. From the investigation the followings are found out; (1) To obtain good results for the modes up to the seven-noded thirty or more divisions of the hull is desirable. For fundamental mode fifteen divisions may give fairly good results. (2) The influence of rotary inertia is negligibly small at least for the modes up to the 5- or 6- noded. (3) In the case of assuming either bending modes or shear modes the calculation results in considerably higher frequencies as compared with those based on Timoshenko beam theory. However, the calculation base on the slender beam theory surprisingly gives frequencies within 10% error for fundamental modes. (4) It is proved that to simplify distributions of added mass and stiffness as trapezoidal ones referred to those of midship section is a promising approach for the prediction of natural frequencies at preliminary design stage; provided good accumulation of data from similar type ships, we may expect to obtain natural frequencies within 5% error.

• 영재교육연구
• /
• 제26권4호
• /
• pp.747-761
• /
• 2016

본 연구의 목적은 수학 창의성에 대한 초등수학영재들의 인식을 알아보는 데 있다. ${\bigcirc}{\bigcirc}$광역시 교육청에서 운영하는 초등수학 영재반에서 영재교육을 받고 있는 초등학생 4, 5, 6학년 200명을 대상으로 수학 창의성에 대한 인식을 분석하였다. Rhodes의 4P 이론에 근거하여 개인, 과정, 산출, 환경 측면에서의 설문 문항을 개발하였고 분석한 설명을 제시하였다. 또한 설문에서 자신들이 받은 교육 프로그램 중에서 가장 창의적인 것이라고 생각하는 것을 지명하도록 요구하였다. 우리는 학생들이 창의성 프로그램을 지명하게 된 이유를 분석하고 그 프로그램을 진행한 교사들을 대상으로 면담을 실시하였다. 자료를 분석한 결과 초등수학영재들은 수학 창의성을 개인 측면에서 창의적 문제 해결, 과제 집착력, 수학에 대한 흥미 그리고 인성으로 꼽았다. 수학영재 학생들의 창의성 인식 연구는 향후 영재교육 프로그램 개발에 그 시사점을 제시한다.

• 대한지역사회영양학회지
• /
• 제26권3호
• /
• pp.155-166
• /
• 2021

Objectives: Driven by a growth of single-person households and individualized lifestyles, solo dining in restaurants is an increasingly recognizable trend. However, a research gap exists in the comparison of solo and group diners' menu-decision making processes. Based on the self-control dilemma and the temporal construal theory as a theoretical framework, this study compared the ordering intentions of solo vs. group diners with healthy vs. indulgent (less healthy) entrées. The mediating role of consumption orientation and the moderating role of amount of menu nutrition information were further explored to understand the mechanism and a boundary condition. Methods: A scenario-based online survey was developed using a 2 (dining social context: solo vs. with others) × 3 (amount of menu nutrition information: no nutrition information vs. calories vs. calories/fat/sodium), between-subjects, experimental design. Consumers' level of nutrition involvement was controlled. A nationwide survey data (n = 224) were collected from a crowdsourcing platform in the U.S. Data were analyzed using multivariate analysis of covariance, independent t-test, univariate analysis of covariance, and moderated mediation analyses. Results: Findings reveal that solo (vs. group) diners have less (vs. more) intentions to order indulgent menu items due to a more utilitarian (vs. more hedonic) consumption orientation in restaurant dining. Findings also show that solo (vs. group) diners have more (vs. less) intentions to order healthy menu items when the restaurant menu presented nutrition information including calories, fat, and sodium. Conclusions: The findings contribute to the literature of foodservice management, healthy eating, and consumer behavior by revealing a mechanism and an external stimuli of solo vs. group diners' healthy menu-decision making process in restaurants. Furthermore, the findings provide restauranteurs and health professionals with insights into the positive and negative impacts of menu nutrition labelling on consumers' menu-decisions.

• 한국인터넷방송통신학회논문지
• /
• 제23권3호
• /
• pp.1-11
• /
• 2023

정보통신의 발달로 온라인 시장 규모는 커지고 있으며, 그와 함께 스마트폰을 활용한 모바일 쇼핑 시장 또한 나날이 그 규모가 증가하고 있다. 즉, 모바일 앱의 효과적인 활용이 기업의 전략적 선택이 될 수 있음을 시사하는데, 이는 관광·여행 산업에서도 동일하게 나타나고 있다. 특히 플랫폼 기반의 OTA 산업의 지속적인 성장은 위드 코로나와 함께 가속화되고 있으며, 그 중요성에 본 연구도 모바일 숙박 앱의 지각된 품질 요인이 감정반응을 통해 재이용 의도에 미치는 영향을 확인하고자 하였다. 가설검증을 위해 모바일 숙박앱 이용자 260명을 대상으로 분석한 결과, 정보 품질이 즐거움과 우세성, 서비스품질이 환기와 우세성에 정(+)의 영향을 미치는 것으로 나타났으며, 즐거움과 우세성이 재이용 의도에 정(+)의 영향을 미치는 것으로 나타났다. 이에 본 연구 결과는 모바일 숙박 앱 품질요인과 재이용 의도의 관계를 명확하게 하였으며, 앱 품질 개선방안을 위한 기초자료를 제공하여 효과적인 마케팅 전략을 제시하였다.

• 경영과정보연구
• /
• 제2권
• /
• pp.47-73
• /
• 1998

According to the structural contingency theories, organizational structures are determined by such a contingency variables as organizational environment, technology, size, power and strategy. Therefore, many scholor believed that organizational effectiveness will be maximized in the condition of the fit between organizational structure and its contingency variables. But contingency theories have limitations in explaining of the manager's discretion by way of environmental determinism. In 1972, Child introduced strategic choice theory, and this perspective spurred significant, systematic studies of the influence of the managerial voluntary will on the organizational performance. Especially, the question of whether tap managers have an impact on business performance has been addressed by the strategic leadership theory that demonstrates strong associations between the characteristics of top managers, strategic orientation. Therefore, this study has investigated a theoretical literature and an empirical survey that explains the impact of top manger characteristics and organizational characteristics about strategic orientation. In order tn do that, this study develops a research model on the subjects, designed manager's characteristics, strategic typology. Managerial characteristics could be operationalized in terms of demographic measures. In this study, strategic orientation was classified using the Miles & Snow typology. This research model provides hypotheses. Hypotheses H1: The demographic characteristics of the tap manager will differ according to the types of strategic types. H2: The organizational characteristics of the firm will differ according to the types of strategic types. To test these hypotheses, this study conducted questionaire surveys on 108 firms in the Korea national wide. This study has utilized ANOVA, Chi-square analysis, cluster analysis, discriminant analysis for testing the hypotheses. The major findings of this study are summarized as follows. First, this study builds on the central tenent of cotingency theory in provide a comprehensive explanation of the process by which top manager's influence. Second, Manager's characteristics(demographics) are different from each other according to 4 strategic types(Prospector, Defender, Analyzer, Reactor). Third, Organizational characteristics are different from each other according to 4 strategic types. In conclusion, the major contributions of this study are to examine the development of a more comprehensive theoretical framework in the strategic leadership theory and to analyze their contingent relationships among managerial characteristics, organizational characteristics and strategic types in the context of Korea's industry.