• 대한수학회논문집
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• 제10권1호
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• pp.123-131
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• 1995

The notion of our non-associative algebra is obtained from the Lotka-Volterra system of differential equation describing competitiion between animals or vegetals species and also in the kinetic theory of gasses. For the structure of an algebra, the existence of idempotents is of particular interest. But also from the biological aspect the existence of such elements is of interest because the equilibria of a population which can be described by an algebra correspond to idempotents of this algebra. Thus we present some properties of the general natures for a Lotka-Volterra algebra associated to a weight function and idempotents elements.

• 한국콘텐츠학회논문지
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• 제9권12호
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• pp.164-172
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• 2009

만화, 애니메이션 등 OSMU 기반의 문화콘텐츠를 기획함에 있어서 가장 중요한 것은 원천스토리의 개발과 이를 다양한 매체의 콘텐츠로 제작할 수 있도록 가공하는 스토리텔링이다. 현재 스토리텔링에 대한 이론적인 연구는 다양하게 이루어지고 있으나, 실제 콘텐츠를 제작할 때 필요한 재미요소 설계에 대한 방법론적인 연구는 미흡하다. 따라서 본 논문은 OSMU 기반의 문화콘텐츠를 기획할 때 그 방법론적인 가이드라인을 제시하고자 하는 목적으로, 스토리텔링의 재미요소를 추출하고, 그 재미요소들을 매체에 맞게 가공하여 시각화하는 비주얼 스토리텔링의 설계 방법을 제안하고자 한다.

• 한국수학사학회지
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• 제26권4호
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• pp.259-275
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• 2013

It has been proposed since modern times that we need to consult the history of mathematics in teaching mathematics, and some modifications of this principle were made recently by Lakatos, Freudenthal, and Brousseau. It may be necessary to have a direction which we consult when modifying the history of mathematics for students. In this article, we analyse the elements of the cognitive interest in Hamilton's discovery of the quaternions and in the history of discovery of imaginary numbers, and we investigate the effects of these elements on attention of the students of nowadays. These works may give a direction to the historic-genetic principle in teaching mathematics.

• 통상정보연구
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• 제8권1호
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• pp.283-303
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• 2006

This is the research on the correlation between the marketing activities conducted by the companies participating in the overseas exhibitions in the exhibition and the satisfaction of the visitors. I have been able to obtain the following findings through the positive research on the satisfaction of the visitors to the overseas exhibitions. The research findings show that the external elements of the participating companies such as 'external appearances of booths, interior facilities and the atmosphere', 'designs of exhibits', 'size of the participating companies', and the publicity elements of the participating companies such as 'the degree of application of mass media', 'prior publicity of the participating companies', etc. among the marketing activities conducted by the participating companies in the exhibition affect the interest and repeat business deals of the visitors. The findings also show that the elements to induce the interest of the visitors such as the booth design and display of products where the participating companies may produce their unique image and the prior publicity to the visitors constitute the important elements of marketing. It has also been revealed that the visitors whose purpose of the visits are to purchase the products and to satisfy their interest in 'the events and contents of the events affect the interest and the repeat business deals of the visitors, among the interest and repeat business deals pursuant to the characteristics of the visitors. It has also been found that the visitors who have recognized the representative brands in the exhibitions affect the interest and the repeat business deals and the visitors who have visited the exhibition several times are more satisfied than the visitors who have visited the exhibition for the first time. The comparative evaluation of the degree of importance of the marketing activities of the participating companies before the visitors' visit to the exhibitions and the degree of satisfaction after their visit reveals degrees of satisfaction in the order of 'the booth staff's professional knowledge of the exhibits', 'foreign language proficiency and their techniques of negotiation and demonstration', 'designs of the exhibits (colors and packaging), 'prior publicity of the participating companies. Such being the case, the companies participating in any of the overseas should maximize the result of their participation in the exhibition by training their staff in the products and foreign languages and through the prior publicity. It has also been found out that "the atmosphere of the booth in the exhibition such as 'launching of new products', 'external appearances of the booth, layout of the interior facilities and the atmosphere and events of the participating companies affect the interest and repeat business deals of the visitors, among the factors for the satisfaction of the visitors. Therefore, it has been proven that the external factors such as the external appearances of the booth, display of the products, launching of new products and events producing the atmosphere of the booth of the participating companies among the marketing activities conducted by the participating companies, and the extent of the training of the booth staff and prior publicity are the major factors affecting the interest and repeat business deals of the visitors.

• 한국실내디자인학회논문집
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• 제22권4호
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• pp.70-77
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• 2013

This study has analysed the composition elements in a cafe space where visual transfer-elements are filled and the perceptual characteristics of facade designs with the purpose of drawing any important elements to advertisement and their related items for uniqueness of designs. For the analysis of the perception process shown in the consecutive situations of observing and visiting cafes, the cafe facade was grouped and stereotyped for the analysis of perceptual characteristics and significant composition elements for better designing of cafes through survey with representative facades as subjects. The conclusions from this study are the followings. First, for the uniqueness specific to cafes to be integrated into facade, memory was chosen first as the most significant advertisement factor followed by interest as with male and attention as with female. The memory has much to do with furniture and finishing material of Clause (4), Chapter 4.1 and the types having effects on perception of Clause (1) and the atmosphere having effect on that of Clause (2) were found to be major factors to attention and interest. Second, it was found out that women preferred horizontally stable partition and men clearly divided facades. The factor of shape was observed first among the constituents of facade followed by color. There was no difference with 'shape' between men and women and color was found to be a space constituent having a lot of effects on women. Third, the memory of experience from visiting a cafe was very likely to offer the motivation of visiting it again, on which furniture had the most effect followed by finishing material and color. Such elevation elements as facade and logo were found not to have effect on the memory or the re-visit. Any intention of visiting again seemed to be influenced by such comprehensive images as atmosphere rather than by any concrete facade, furniture, or appliance. From the above viewpoint, facade design should have any uniqueness or impressive feature as well as the effect of making passers-by drop in and attracting them into the shop. The analysis of attributes of facade constituents revealed that the abstract images in addition to the configuration of facade had much to do with interest or behavior.

• Interaction and multiscale mechanics
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• 제3권3호
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• pp.235-255
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• 2010

This paper investigates the heat equation for domains subjected to an internal source with a sharp spatial gradient. The solution is first approximated using linear finite elements, and sufficiently small time-step sizes to yield stable simulations. The main area of interest is then in the ability to approximate the solution using Generalized Finite Elements, and again explore the time-step limitations required for stable simulations. Both high order elements, as well as elements with special enrichments are used to generate solutions. When compared to linear finite elements, the high order elements deliver better accuracy at a given level of mesh refinement, but do not offer an increase in critical time-step size. When special enrichment functions are used, the solution can be approximated accurately on very coarse meshes, while yielding solutions which are both accurate and computationally efficient. The major conclusion of interest is that the significantly larger element size yields larger allowable time-step sizes while still maintaining stability of the time-stepping algorithm.

• 한국의류학회지
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• 제40권4호
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• pp.733-745
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• 2016

This study investigated the effect of clothing interest on party preference and suggested four party unities according to party wear types. A hypothesized model based on consumer innovativeness, clothing interest, party benefit, party interest and party preference was tested to determine the effect of clothing interest on party preference. Party unities were constructed according to party wear types along with party place, party food, and party music. Data was collected through two online surveys. The population of the survey was female consumers in their twenties. Descriptive statistics, factor analysis, reliability, correlations, and regressions were applied to the data of 305 samples. As a result, positive tendency toward consumer innovativeness, clothing interest, party benefit, party interest and party preference was observed in young female consumers with significant relations among five variables. Party preference was well-explained from the hypothesized research model, but the direct path from clothing interest to party interest was identified as insignificant. The most preferred party elements of place, food, music and wear was garden, barbecue, house music and mini dress, respectively. Four party unities according to party wear types were constructed and suggested based on the correlation analysis results between party wear and other party elements. The concept of party unity is useful to establish marketing strategies such as advertising and experience marketing in the party wear industry.

• 한국실내디자인학회논문집
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• 제26권5호
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• pp.65-74
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• 2017

The purpose of this research is to analyze characteristics of street elements when pedestrians have a view in the street. The research was utilized eye-tracking experiment and two times survey before and after experiment. The experiment is composed as follows. The data collection was conducted two days period from March 30 to 31, 2017. There were 43 participants who were all male and undergraduate students. In the data recording, the stimulus image was presented 65 seconds on a 23-inch monitor. Prior to analyzing data, the images were represented into five elements of AOI(area of interest). The fixation rate was divided by a period such as 'fixation time' and 'fixation count' parameters. The results were additionally obtained by linking analysis with the area ratio of AOI, time series analysis, and questionnaire. First of all, both building signs and advertisement standing boards draws attentions in participants. From a comparison between fixation rate and survey, the data have negative perspective view. Second, the advertisement standing boards are more eye-catching than other elements regardless of AOI size. It shows the priority of elements what should be developed in the environment. Third, the pavement is rarely seen in the fixation rate. Fourth, the trees are not a long frequency but viewed as a positive element. People want to keep the natural site in the street. In summative research, this method of extracting eye movement data would be provided a foundation data for developing streetscape plan based on scientific factors.

• 한국CDE학회논문집
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• 제2권3호
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• pp.175-185
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• 1997

Given the widespread use of the Finite Element Method in strength analysis, automatic mesh generation is an important component in the computer-aided design of parts and assemblies. For a given resolution of geometric accuracy, the purpose of mesh generators is to discretize the continuous model of a part within this error limit. Sticking to this condition often produces many small elements around small features in spite that these regions are usually of little interest and computer resources are thus wasted. Therefore, it is desirable to selectively suppress small features from the model before discretization. This can be achieved by low-pass filtering a CAD model. A spatial function of one dimension higher than the model of interest is represented using the Fourier basis functions and the region where the function yields a value greater than a prescribed value is considered as the extent of a shape. Subsequently, the spatial function is low-pass filtered, yielding a shape without the small features. As an undesirable effect to this operation, all sharp corners are rounded. Preservation of sharp corners is important since stress concentrations might occur there. This is why the LPF (low-pass filtered) model can not be directly used. Instead, the distances of the boundary elements of the original shape from the LPF model are calculated and those that are far from the LPF model are identified and removed. It is shown that the number of mesh elements generated on the simplified model is much less than that of the original model.

• 디지털융복합연구
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• 제20권2호
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• pp.407-413
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• 2022

본 연구는 초기 연구를 통해 제작하고 개발한 'COVID-19 SABER' VR 게임의 기술적, 내용적 구성 요소가 사용자의 시각적 몰입감 향상에 영향을 미치는지 알아보기 위해 사용자 체험과 설문을 통해 실증 분석을 진행하였다. 그 결과 먼저, 기술적 구성 요소의 해상도, 시야각, 이펙트, 디자인 품질에 관한 가설은 채택되었고, 프레임 레이트, 조명의 밝기에 관한 가설은 기각되었다. 다음으로, 내용적 구성 요소의 가설은 배경, 연출, 색상과 질감, 흥미와 재미에 관한 가설은 채택되었고, 스토리텔링에 관한 가설은 기각되었다. 정리하면, VR 게임의 시각적 몰입감 향상을 위해서는 기술적 구성 요소의 해상도, 시야각, 이펙트, 디자인 품질과, 내용적 구성 요소의 배경, 연출, 색상과 질감, 흥미와 재미를 중심으로 설계하고 제작해야 한다는 결과를 도출하였다. 본 연구 결과는 향후 사용자의 시각적 몰입을 유도하고 향상할 수 있는 VR 게임의 제작 및 개발 분야에 기초 자료가 될 것으로 기대한다.