• 한국우주과학회:학술대회논문집(한국우주과학회보)
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• 한국우주과학회 2004년도 한국우주과학회보 제13권2호
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• pp.62-62
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• 2004

• 한국결정학회지
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• 제7권2호
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• pp.196-200
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• 1996

단사정계에서 비표준공간군의 단위포 자료, Miler 지수 그리고 원자좌표들을 표준공간군의 것으로의 변환과정과 그들의 표준편차의 계산과정을 제시하고 computer program화 하였다. 이 program들은 7개 결정계 모두에게 적용할 수 있다.

• 한국실내디자인학회논문집
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• 제18권5호
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• pp.164-174
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• 2009

Since the end of 19th century, The form and inner space for the religious ceremony; liturgical space of Catholic churches in Busan diocese have been changed as various styles by several outer and inner factors. The changing of historical, social, and religious environment, such as Opening Harbor, Japanese Occupation, Korean War & Rehabilitation Period, and Vatican II are generally regarded as main outer factors, and the locality that lay behind the flux of those events is considered as the main inner factor. The former has usually operated as a momentum for showing general trend of Catholic church, while the latter has made local singularity expressed as unusual style and somewhat modified liturgical space compared with Its contemporary churches. In the context, this paper attempt to analyze the transformation process of style and liturgical space of Catholic churches in Busan diocese focused on revealing local singularity with main five churches, Bumil Church, Samrangjin Church, Milyang Church, Jungang Church, and Dongrae Church, constructed between the end of 19th century and 1962.

• 한국가구학회지
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• 제22권3호
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• pp.160-173
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• 2011

Increased internet use under a ubiquitous environment may be called as a great human information space revolution followed by Industrial Revolution. This revolution is exerting its significant influence over all the industry as a whole with speed faster than that of any other times. Along with this trend, if furniture design field that leads living culture should fail to jump on this main stream without noticing it, it may be reduced to a unpopular field some day without any sign of recovery. Under this background, this study is intended to recognize a goal aiming at understanding our rapidly changing living environment and leading our way positively. Currently, our surrounding living environment is immersed in computers here and there and Mark Weiser once defined a system that moves in advance before an action as ubiquitous computing and in this respect, I am going to observe a detailed transformation process of space. First nature of the space may be defined as atoms, a physical space equivalent to a spatial element and Bits space that is untouchable is usually called as 2nd space and a combination of atoms and Bits is an intelligent space - 3rd space - that can be intelligible without touching it and finally, this space is called as a ubiquitous space. This spatial transformation is developed by several changes of living environment and we may call it as living trend or interior design trend. Transformation in terms of social perspective, space structural perspective and digital technique perspective may be enumerated. These transformations were surveyed based on its contents being implemented at a future housing exhibition hosted by 5 construction companies along with fusion of information furniture and furniture depending on each housing space. In conclusion, it could be realized that most of the companies were decorating future space by implementing ubiquitous environment as a success factor of future housing market. It may be meaningful to note once again that under an interior environment, a fusion of furniture and information furniture is required considering interior trend elements.

• 한국경제지리학회지
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• 제11권1호
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• pp.24-44
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• 2008

지금까지 조절이론은 주로 경제적 및 사회적 측면의 조절과정에 주목해 온 반면, 공간적 측면의 조절과정은 간과해 왔다. 특히 탈사회주의 체제전환 과정에 대한 조절이론적 접근은 거의 이루어진 바가 없다. 이에 본 논문은 탈사회주의 체제전환 과정에서 나타나는 공간경제의 전환을 조절이론의 관점에서 이론화하고자 한다. 공간경제는 경제체제에 따른 사회적 관계를 반영하고 이를 조건지우는 맥락으로서 사회적 재생산이 일어나는 배경이다. 따라서 국가 사회주의에서 자본주의로의 체제전환 과정이 일어나면, 이와 관련한 사회적 관계의 변동이 수반될 뿐만 아니라 구체적 수준의 기업 및 산업 네트워크의 변동이 초래된다. 이와 같은 맥락에서, 우선 본 논문은 기업을 둘러싼 각종의 네트워크를 집합적 의미의'조절양식'으로 간주하는'기업 조절양식'개념 틀을 바탕으로 탈사회주의 체제전환과 관련한 기업 내, 기업 간, 기업 외 관계의 구체적인 분석 내용을 논의하였다. 다음으로 사회경제체계의 거버넌스와 관련한 제도 및 네트워크의 특성에 따라서, 탈 착근적(단선적 성격의 체제이행), 착근적(연속적 성격의 체제전환), 과잉 착근적(과거 유산에 고착된 성격의 체제전환)인 공간경제 유형을 제시하고 이를 이론적 수준에서 설명하였다.

• 전자공학회논문지B
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• 제33B권1호
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• pp.96-107
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• 1996

본 논문에서는 직교 벡터 공간 변환을 이용한 새로운 음성 개성 변환 알고리즘을 제안하였다. 음성 개성 변환이란 임의 환자(source)가 가지고 있는 몇 개의 특징 변수를 다른 화자(target)의 특징 변수로 변환하는 기법이다. 본 논문에서는 LPC 켑스트럼 계수와 여기 신호의 스펙트럼, 그리고 피치 궤적을 변환하여 음성 개성변환을 구현하였다. LPC 켑스트럼 계수의 변환을 위해 직교 벡터 공간 변환 기법이 제안되었다. 이 기법은 KL(Karhunen-Loeve)변환을 이용한 principle component의 분리와 최소 자승 오차를 갖는 선형 좌표 변환을 통해 LPC 켑스트럼의 변환을 수행한다. 또한, 화자간의 운율적인 특징을 변환하기 위해 피치 궤적 변환 기법이 제안되었다. 피치 궤적 변환을 위하여 먼저 두 화자간의 기준 피치 패턴의 작성하고 기준 패턴간의 대응 관계를 추정한 후 이를 이용하여 source 화자의 피치 패턴이 target 피치 패턴으로 변환되도록 하였다. 컴퓨터를 이용한 모의 실험 결과 제안된 알고리즘은 객관적인 평가와 주관적인 평가에 있어서 우수한 성능을 나타내었다.

• Journal of the Korean Society for Industrial and Applied Mathematics
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• 제14권1호
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• pp.35-42
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• 2010

A goal of Magnetic Resonance Imaging is reproducing a spatial map of the effective spin density from the measured Fourier coefficients of a specimen. The imaging procedure can be done by inverse Fourier transformation or backward fast Fourier transformation if the data are sampled on a regular grid in frequency space; however, it is still a challenging question how to reconstruct an image from a finite set of Fourier data on irregular points in k-space. In this paper, we describe some mathematical and numerical properties of imaging techniques from non-uniform MR data using the pseudo-inverse or the diagonal-inverse weight matrix. This note is written as an easy guide to readers interested in the non-uniform MRI techniques and it basically follows the ideas given in the paper by Greengard-Lee-Inati [10, 11].

• 대한기계학회논문집A
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• 제21권2호
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• pp.352-360
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• 1997

An inverse dynamic procedure for spatial multibody systems containing flexible bodies is developed in the relative joint coordinate space. Constraint acceleration equations are derived in terms of relative coordinates using the velocity transformation technique. An inverse velocity transformation operator, which transforms the Cartesian velocities to the relative velocities, is derived systematically corresponding to the types of kinematic joints connecting the bodies and the system reference matrix. Using the resulting matrix, the joint reaction forces and moments are analyzed in the Cartesian coordinate space. The formulation is illustrated by means of two numerical examples.

• 음성과학
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• 제11권4호
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• pp.75-88
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• 2004

In this paper, we propose a new approach to sequential linear regression adaptation of continuous density hidden Markov models (CDHMMs) based on transformation space model (TSM). The proposed TSM which characterizes the a priori knowledge of the training speakers associated with maximum likelihood linear regression (MLLR) matrix parameters is effectively described in terms of the latent variable models. The TSM provides various sources of information such as the correlation information, the prior distribution, and the prior knowledge of the regression parameters that are very useful for rapid adaptation. The quasi-Bayes (QB) estimation algorithm is formulated to incrementally update the hyperparameters of the TSM and regression matrices simultaneously. Experimental results showed that the proposed TSM approach is better than that of the conventional quasi-Bayes linear regression (QBLR) algorithm for a small amount of adaptation data.

• 제어로봇시스템학회논문지
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• 제17권1호
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• pp.22-30
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• 2011

Plane detection is very important information for mission-critical of robot in 3D environment. A representative method of plane detection is Hough-transformation. Hough-transformation is robust to noise and makes the accurate plane detection possible. But it demands excessive memory and takes too much processing time. Iterative randomized Hough-transformation has been proposed to overcome these shortcomings. This method doesn't vote all data. It votes only one value of the randomly selected data into the Hough parameter space. This value calculated the value of the parameter of the shape that we want to extract. In Hough parameters space, it is possible to detect accurate plane through detection of repetitive maximum value. A common problem in these methods is that it requires too much computational cost and large number of memory space to find the distribution of mixed multiple planes in parameter space. In this paper, we detect multiple planes only via data sampling using Self Organizing Map method. It does not use conventional methods that include transforming to Hough parameter space, voting and repetitive plane extraction. And it improves the reliability of plane detection through division area searching and planarity evaluation. The proposed method is more accurate and faster than the conventional methods which is demonstrated the experiments in various conditions.