• Journal of the Korean Mathematical Society
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• v.53 no.1
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• pp.233-246
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• 2016

In this paper, we introduce the class of analytic extensions of M-hyponormal operators and we study various properties of this class. We also use a special Sobolev space to show that every analytic extension of an M-hyponormal operator T is subscalar of order 2k + 2. Finally we obtain that an analytic extension of an M-hyponormal operator satisfies Weyl's theorem.

• The Pure and Applied Mathematics
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• v.7 no.1
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• pp.1-6
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• 2000

An extension of $H\"{o}lder's$ inequality whose discrete form is described as follows is given. Let $\nu$ be a positive measure on a space Y, $\nu(Y)\;\neq\;0$, and let $f_{j}$(j = 1,2,...,n) be positive ν-integrable functions on Y. If ${\alpha}_j$ > 0(j = 1,2,...,n) and ${\beta}_j$(j = 1,2,...,k < n) are related to be (equation omitted) then (equation omitted).

• Journal of Ocean Engineering and Technology
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• v.8 no.2
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• pp.151-156
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• 1994

The equations of motion of a submarine pipeline with the internal flowing fluid and subject to hydrodynamic loadings are derived by using Hamilton's principle. Coupling between the bending and the longitudinal extension due to axial load and thermal expansion are considered. Coupling between the twisting and extension are not considered. The equations of motion are well agreed with the results which are derived by the vector method.

• Communications of the Korean Mathematical Society
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• v.10 no.1
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• pp.49-55
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• 1995

This paper is the third of a series in which smoothness properties of function in several variables are discussed. The germ of the whole theory was laid in the works by Folland and Stein [4]. On nilpotent Lie groups, they difined analogues of the classical $L^p$ Sobolev or potential spaces in terms of fractional powers of sub-Laplacian, L and extended several basic theorems from the Euclidean theory of differentaiability to these spaces: interpolation properties, boundedness of singular integrals,..., and imbeding theorems. In this paper we study the analogue to the extension theorem for the Folland-Stein spaces. The analogue to Stein's restriction theorem were studied by M. Mekias [5] and Y.M. Kim [6]. First, we have the space of Bessel potentials on the Heisenberg group introduced by Folland [4].

• Korean Journal of Computational Design and Engineering
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• v.10 no.2
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• pp.121-132
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• 2005

There have been several efforts for the investigation of the formal development team which was formed in the IAI to develop a common 2D standard specification between ISO/STEP and IAI/IFC since 2002. As a result, a drafting model has been included in the IFC2.x2 model. However, to be used actively in the construction practice for construction drawing exchange, the IFC model should be extended to the paper space for multiple views, drawing output, and delivery of drawings. Therefore, in this paper, the methodology of relating STEP and IFC has been investigated and schema extension of paper space(drawing sheet, presentation view, view pipeline), complex entity(leader), and dimension(associative) have been achieved. The resulting, IFC model will enable a basic harmonization with KOSDIC. SCADEC, and STEP-CDS by retaining the current IFC architecture. In addition, IT systems for the construction industry can be beneficial from the developed data model.

• Proceeding of Spring/Autumn Annual Conference of KHA
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• 2006.11a
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• pp.443-447
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• 2006

The purpose of this study is to present basic data that can assist on projecting the plans of use of balcony space, by identifying the problems derived from balcony remodelling for the sole purpose of securing practical space, and to further research on the role of balcony space in an apartment. The results of this study revealed a high demand on balcony space, thus the key area of research would be on developing various methods of utilizing such balcony space differing among the different types of available residential space, rather than a standardized extension of balcony space.

• International Journal of High-Rise Buildings
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• v.10 no.1
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• pp.17-28
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• 2021

In Harbin, a network of underground commercial spaces has been developed to occupy spaces that were originally created as civil defense shelters. With the gradual extension of the local metro rail system, the existing underground commercial space is no longer an isolated regional development, but a space that represents "three-dimensional city" and coordinated development taking place in many Chinese cities. Based on the analysis of the unique development process taken in underground space of Harbin, this paper summarizes three characteristics of its early model of "fragmented development" of underground space. By conducting a comprehensive field research and survey, the researchers analyzed 472 questionnaires related to the development trend, and proposed multi-level synergistic elements for the renewal and development of underground commercial space. The paper concludes by discussing the trend of "three-dimensional and collaborative development," suitable for the development needs of the new era, and the corresponding development strategies for the renewal of underground space.

• Journal of Agricultural Extension & Community Development
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• v.17 no.1
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• pp.1-23
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• 2010

The purpose of this study is to verify and carry out action plan and issues on how local amenity can be revealed through rural village planning and design especially in the local resources such as nature, history, culture. Especially, this lead to macro view of the rural village plan i.e. related to rural identity and space planning via estimating the local resources. According to this study will plan of 4 phrase steps 1. Analyse nature, environment, human sociology environment, space etc., and comprehensive analysis 2. compare the results of estimation and find the planing factors after that set the planning process 3. plan and create to rural community i.e. considering harmony with space function, environmental circumstance, landscape etc, 4. suggest the rural community action plan by considering amenity attributes.

• Journal of Agricultural Extension & Community Development
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• v.14 no.2
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• pp.417-436
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• 2007

The purpose of this study was to prepare for developing rural house remodeling techniques utilizing the traditional residence factor. The study was carried out through both literature research and on-site research. The traditional residence space factors were identified through literature research and on-site research was carried out through analysis of the rural house remodeling cases. The results of this study was as follows ; 1) Traditional space factors were derived by literature research i. e. space arrangement (topography, direction, plane arrangement), exterior factors; walls, madang, interior factors; roofs, ondol, floors, colours. 2) The traditional residence factor utilizations of remodeling were applied a result through investigation case and analysis. Five rural houses in Namsa village, Danseong-myeon, Sangcheong-gun, Gyeongsangnam-Do were analyzed as remodeling cases including traditional residence factors. There were limitation of budget problems and material selection in the traditional residence factor utilizations of remodeling. The researchers have chosen target rural houses which applied for traditional residence factors to remodel the rural houses, and the most important factor to consider was harmony with rural unique characteristics. The researchers suggested considerations should be placed on development with energy savings and convenience in rural house remodelling.

• Journal of Agricultural Extension & Community Development
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• v.17 no.4
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• pp.851-875
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• 2010

Rural Experiential Tourism is the medium that connect a town and country. Through the form of these Rural Experiential Tourism people live in country sell indigenous products and tourism services. Both people maintain friendly relations with their friendship based on mutual trust. The aim of space planing for experience and development of experience program is make visitors learn many valuable lessons in countryside. So, Two things must discussed closely related. Also it is necessary to mention people to conduct in there. Visitors who live in Gyonggi and Chungcheong province come to frequently Geumgang Nongbau village for a day. They enjoy going for a swimming and fishing in Geumgang. In order to activate specialized experience program, it is necessary to increase the number of those exclusively responsible for that experience program and organization visitors make stay overnight in village. Also to enhancing village people's income must have agricultural stand and activate village internet site.