• 대한수학회보
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• 제41권4호
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• pp.609-618
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• 2004

Pseudo-parallel real hypersurfaces in complex space forms can be defined as an extrinsic analogues of pseudo-symmetric real hypersurfaces, that generalize the notion of semi-symmetric real hypersurface. In this paper a classification of the pseudo-parallel real hypersurfaces in a non-flat complex space forms is obtained.

• 대한수학회보
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• 제41권4호
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• pp.699-708
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• 2004

Niebergall and Ryan posed many open problems on real hypersurfaces in complex space forms. One of them is "Are there any Ricci-parallel real hypersurfaces in complex projective space $P_2C$ or complex hyperbolic space $H_2C$\ulcorner" The purpose of present paper is to prove the nonexistence of such hypersurfaces.

• Korean Journal of Mathematics
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• 제13권1호
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• pp.43-50
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• 2005

We introduce the Joint spectrum on the complex Banach space and on the complex Hilbert space and the tensor product spectrums on the tensor product spaces. And we will show ${\sigma}[P(T_1,T_2,{\ldots},T_n)]={\sigma}(T_1{\otimes}T_2{\otimes}{\cdots}{\otimes}T_n)$ on $X_1{\overline{\otimes}}X_2{\overline{\otimes}}{\cdots}{\overline{\otimes}}X_n$ for a polynomial P.

• 충청수학회지
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• 제21권1호
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• pp.29-48
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• 2008

We deal with the classification problem of real hypersurfaces in a complex hyperbolic space. In order to classify real hypersurfaces in a complex hyperbolic space we characterize a real hypersurface M in $H_n(\mathbb{C})$ whose structure vector field is not principal. We also construct extrinsically homogeneous real hypersurfaces with four distinct curvatures and their structure vector fields are not principal.

• 대한수학회보
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• 제55권1호
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• pp.251-266
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• 2018

In this paper, considering the class of complex Kropina metrics we obtain the necessary and sufficient conditions that these are generalized Berwald and complex Douglas metrics, respectively. Special attention is devoted to a class of complex Douglas-Kropina spaces, in complex dimension 2. Also, some examples of complex Douglas-Kropina metrics are pointed out. Finally, the complex Douglas-Kropina metrics are characterized through the theory of projectively related complex Finsler metrics.

• 디지털융복합연구
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• 제18권7호
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• pp.57-71
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• 2020

산업화와 도시화에 따라 지역중심으로 주민들을 위한 복합문화공간이 계발 되어오고 있다. 이러한 변화에 주목하여, 복합문화공간이 어떠한 기능을 가지고 있으며 이러한 기능이 복합문화공간을 이용하는 고객의 고객가치와 재방문의도에 어떤 영향을 미치는지 알아보고자 하였다. 이 연구를 통해 복합문화공간을 운영하는 지자체나 기업에게 복합문화공간을 운영할 때 어떤 기능에 중점을 둘 것인가 하는 운영전략 도출에 실질적인 도움이 되고자 하였다. 이를 위해 복합문화공간 관련 문헌연구를 바탕으로 설문지를 작성하여 자료를 수집하였으며 SPSS Win Ver. 22.0과 PROCESS macro v3.4를 이용하여 분석하였다. 그 결과 복합문화공간의 기능은 고객가치와 재방문의도에 일부 유의미한 영향을 끼치는 것으로 나타났으며, 각각의 기능들이 이용고객의 고객가치와 재방문의도에 어떻게 영향을 주고 있는지가 도출되었다. 도출된 결과는 기업이나 지자체 운영자에게 적용 가능한 운영전략과 경영방향을 세우는데 의미 있는 시사점을 제안하였고, 향후 복합문화공간을 활용한 지역 활성화라는 보다 거시적인 복합문화 공간의 역할을 연구하는데 있어 유용한 자료로 기여할 것이다.

• 대한수학회보
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• 제49권1호
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• pp.49-55
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• 2012

In this paper, we prove that a complex Finsler manifold is a complex locally Minkowski space if and only if it is a strictly K$\ddot{a}$hler-Berwald manifold with zero holomorphic sectional curvature.

• 한국실내디자인학회논문집
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• 제19권6호
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• pp.188-196
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• 2010

The Commercial space are changed gradually large scalized and complexed to introduce different culture exchanges and experience. However, the mass-complex commercial space are limited as of their complexed space composition or degree of space depth, which may become factors causing people to get tired easily. Thus, having a design strategy is important to create economical effectiveness in order to overcome these limitations and for the people to stay longer and do their consumption activities through more experiences and social interchanges. Recently, Jerde Partnership's who designed many complex commercial spaces made a commercial success by their unique design strategy to setup a new space and lead the interaction between space and people. The purpose of this study is based on Jerd's design concept to analyze Jerd Partnership's design strategy and space related structure to propose their space construction and design method for mass-complex commercial spaces. The results are as follows. (1)Jerde Partnership's causes the abundant space experience of the user through mass and space constitution to have a theme and a story. (2)They builds an excursion type line of flow system with an organic curve, and a non-daily experience by the change of the space scale and the application of various programs is enabled and guides the stay for the long time. (3)They builds the doorway of various courses and a circulation system through the open space and controls depth of the space. In addition, various events are performed in the center of such a circulation system, and this event makes a unique place.

• 한국환경복원기술학회지
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• 제13권6호
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• pp.25-38
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• 2010

This study focused on the analysis of satisfaction and preference of residents' for water space as a environmental friendly facility in residential complex. The purpose of this study is to serve design data of water space in residential complex, in order to make water space that residents' satisfaction are high. In this study, residents' satisfaction and preferences of water space in 5 residential complex were analyze through a questionnaire survey of residents. The major findings of the study are as follows. First, in terns of the need of the water space, 60.4% of the respondents answered that water space are need to improve the amenity. Secondly, in terms of satisfaction, 57.3% of the respondents have been satisfied with location of water space in the residential complex, and the maintenance satisfaction degree is above average level. Overall satisfaction degree is above average level too, but it is are not high as compared construction cost. Thirdly, in terms of preference, 26.5% of respondents have been prefer to the combined type of water space, and 25.9% of respondents prefer to dropping water type, and 25.9% of respondents prefer to flowing stream type. It appeared that the preference levels of 3 type is high similarly, so we can assume that residents prefer to moving water type because of having a feeling refreshed through the sound of water. The results of this study can be used as the design data of water space in residentialcomplex and expected to contributed in making the water space that residents' satisfaction are high.

• 한국산학기술학회논문지
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• 제18권12호
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• pp.32-41
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• 2017

본 논문은 천안지역의 아파트단지 외부공간을 분석함에 있어서 공간구문론을 활용하여 구성요소 간의 관계성을 기반으로 하는 각 구성요소들의 배치 속성을 단지 전체 차원에서 해석하는 것을 목적으로 하며, 본 연구에 대한 예비 연구적 성격으로 진행하였다. 아파트단지 외부공간이 모두 연결되어 있는 하나의 공간구조라는 관점으로 거주자의 보행에 기반을 두고 각 공간 및 시설로의 출입공간에 대한 접근성 변화를 분석하였다. 총 5시기로 구분하고, 아파트단지 외부공간에 위치한 시설 및 공간으로의 출입공간을 단위공간으로 설정하였는데, 본 연구에서는 단지주출입공간, 주동 출입공간, 단지내 상가, 관리사무소/경로당, 어린이놀이터, 주민운동시설 등 총 6개의 분석항목을 설정하여 분석하였다. 분석결과 다음과 같은 결론을 얻었다. 첫째, 단지주출입공간의 접근성은 거의 모든 시기에서 높게 나타났으며, 주동 출입공간은 전반적으로 낮은 접근성을 보이고 있다. 둘째, 단지내 상가는 접근성이 향상되고 있는 경향을 보이고 있다. 셋째, 주민공동공간으로 볼 수 있는 관리사무소/경로당, 어린이놀이터, 주민운동시설 중에서 어린이놀이터의 경우는 예외적으로 통합도 순위가 시기별 큰 변화 없이 일정하게 높은 경향을 보이고 있고, 관리사무소/경로당의 경우는 최근으로 올수록 통합도 순위가 높아지는 경향을 보여 접근성이 좋은 위치에 주로 계획되고 있음을 나타내고 있다.