• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2014년도 춘계학술대회
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• pp.901-904
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• 2014

센싱 기술이 발달함에 따라, 다양한 도메인에서 각각 다른 목적을 가진 상황인지 기술들이 개발되어 왔다. 많은 서비스들이 개발되고 실제로 사용되고 있지만, 특정한 공간을 도메인으로 둔 서비스는 미흡하였다. 이를 해결하고자 여러 시도들이 있어왔으며 실제로 성과를 거둔 연구도 많이 있었다. 이 중, 온톨로지 기반 추론을 이용한 방법들이 상황인지 시스템에 비교적 신뢰성 있고 적합하였으나, 복잡한 규칙을 사용하지 않는 이상 사용자 별로 상황을 인지하지는 못하였다. 본 논문에서는 기존의 사용자 중심의 상황 모델링에 기반 한 추론에서 벗어나 개체 중심으로 그 범위를 확대하였다. 또한, 사용자 및 홈 프로파일을 사용하여 사용자 별 상황을 인지 할 뿐만 아니라 각 개체 별 상황을 인지함으로써 더욱 구체적인 상황정보를 제공하고자 한다.

• ETRI Journal
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• 제42권2호
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• pp.230-238
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• 2020

Human-object interaction (HOI) detection is a popular computer vision task that detects interactions between humans and objects. This task can be useful in many applications that require a deeper understanding of semantic scenes. Current HOI detection networks typically consist of a feature extractor followed by detection layers comprising small filters (eg, 1 × 1 or 3 × 3). Although small filters can capture local spatial features with a few parameters, they fail to capture larger context information relevant for recognizing interactions between humans and distant objects owing to their small receptive regions. Hence, we herein propose a three-stream HOI detection network that employs a context convolution module (CCM) in each stream branch. The CCM can capture larger contexts from input feature maps by adopting combinations of large separable convolution layers and residual-based convolution layers without increasing the number of parameters by using fewer large separable filters. We evaluate our HOI detection method using two benchmark datasets, V-COCO and HICO-DET, and demonstrate its state-of-the-art performance.

• 말소리와 음성과학
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• 제12권2호
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• pp.17-27
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• 2020

This paper examines kinematic characteristics of /pk/ clusters, as compared to /kk/ and /pp/ with varying vowel contexts and speech rate. The results of EMMA data from eight Seoul-Korean speakers indicate as follows. Firstly, comparing /pk/ to /pp/ sequences, lips closing movement was faster and spatially greater in the /a/-to-/a/ context while temporally longer in the /i/-to-/i/ context. It was smaller in spatial displacement and shorter in temporal duration in /pk/ sequences. Peak velocity did not vary. Secondly, comparing /pk/ with /pp/ and /kk/ controls, lip aperture was less constricted in the /a/-to-/a/ context than /i/-to-/i/, but the maximum contact between the upper and lower lips was invariant across different vocalic contexts within /pk/ sequences (/apka/=/ipki/). Categorical reduction of C1 in /pk/ sequences fell in with the low-vowel and fast-rate conditions with across-/within-speaker variability. Gradient reduction of C1 was observed in all C1C2 types, being more frequent in fast rate. Lastly, the jaw articulator was a stable indicator of rate effects. The implication of the current study is that gestural reduction occurs with categorical reduction and general spatiotemporal weakening in the assimilating contexts, while quantitative properties of gestures may be a reason for gradient reduction, not necessarily confined to place assimilation.

• 한국실내디자인학회논문집
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• 제20권4호
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• pp.145-154
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• 2011

Identity of the place where the physical location and time and spatial context, and is structured as socially agreed symbols to build a consistent image, while fraught with Differentiation can be achieved through integration. And discrimination and the practical and effective deployment of an integrated image to be useful as a guide for the top design 'Design Guidelines' are, The findings, where the identity used to establish guidelines for the design for the following conclusions can be drawn. First, of public space design guidelines agreed upon by the public and social identity as the basis to establish a new identity as a contemporary and practical plan for this is to provide guidance. Second, the design guidelines in principle, the physical elements and activities of the parent and the temporal and spatial context and meaning were overridden. Third, the horizontal axis with respect to the identity and principles to guide development in the detail, and the vertical axis as a place to build an image in order for the specific design items are listed. Fourth, the guidelines can set a specific motif, and coverage including identity of the place. Fifth, by applying image and schematic the identity can be Implemented effectively and clearly. Without interfering with the designer's creativity and implement new image of the place, Design guidelines should study how a reasonable instructions.

• 한국실내디자인학회논문집
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• 제28호
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• pp.17-24
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• 2001

This study aims at the spatial analysis in semiotic architecture focusing on the early works of M. Graves and P. Eisenman, the representative architects of semiotic architecture. This study on the semiotics of architectural space can be started with literaeur's approaches which recognizes it as the language. Thus, to applicate semiotics in architectural space means a methodology reaching for essential architecture. The conclusions of the study as per the above mentioned aims and intentions are as follows: The viewpoint of spatial analysis in M. Graves's semiotic architecture is defined the semantic metaphorical space of denotative context : That of P. Eisenman's described the synthetic deep of connotative self-restraint.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2003년도 봄 학술발표회 논문집
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• pp.123-130
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• 2003

The estimation of key soil properties and subsequent quantitative assessment of the associated uncertainties has always been an important issue in geotechnical engineering. It is well recognized that soil properties vary spatially as a result of depositional and post-depositional processes. The stochastic nature of spatially varying soil properties can be treated as a random field. A practical statistical approach that can be used to systematically model various sources of uncertainty is presented in the context of reliability analysis of slope stability Newly developed expressions for probabilistic characterization of soil properties incorporate sampling and measurement errors, as well as spatial variability and its reduced variance due to spatial averaging. Reliability analyses of the probability of slope failure using the different statistical representations of soil properties show that the incorporation of spatial correlation and conditional simulation leads to significantly lower probability of failure than obtained using simple random variable approach.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2003년도 Proceedings of ACRS 2003 ISRS
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• pp.1046-1048
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• 2003

Recently, various researches in respect of the positioning technologies using satellites and the other sensors have made location-based services (LBS) more common and accurate. Consequently, concern about position information has been increasing. However, since these positioning systems only focus on user's position, it is difficult to know the user's attitude or detailed behaviors at the specific position. It is worthy to study on how to acquire such human attitude or behavior, because those information is useful to know the context of the user. In this paper, the sensor unit consisting of three dimensional accelerometer was attached to human body, and autonomously measured the perpendicular acceleration of ordinary human behaviors including activity modes such as walking, running, and transportation mode using transportation such as a train, a bus, and an elevator. Subsequently, using the classified measurement results, the method to identify the human activity modes was proposed.

• 한국실내디자인학회논문집
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• 제20호
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• pp.105-113
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• 1999

This study intends to analyze the various spatial structures of the Seoul city museum with reference to the layouts and the qualitative mode of exhibition items. Understanding the way of actual exhibition design can be a clue to understand the contents of exhibition story which guarantees to make the pertinent space and visitors route organization between different levels of architectural space and exhibition space. The basic methodological ideas of this study are as follows; 1) Systematic analysis about the characteristics of exhibits, historic context, and hierachy of each thematic zone. 2) Analysis of physical combination of object spatial cell in the view of visitors circulatiov. As an actual example History zone (1F), Life and Culture zone(2F), City zone(2F) in the museum are analyzed and examined

• Spatial Information Research
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• 제8권1호
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• pp.1-14
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• 2000

국토이용계획도, 도시계획도, 농업진흥지역도, 산지이용구분도 등 용도지역·지구 자료는 법적·공간적 특성으로 자료간 연관성을 가지고 있다. 그러나 부처별·부서별 제도운용에 따른 자료공유의 어려움, 수작업체계에 의한 용도지역·지구 경계선의 저확성 한P 등으로 자료간의 관계가 일관성이 결여되어 토지 이용에 많은 문제가 발생하고 있다. 이 연구에서는 GIS의 중첩기법을 이용하여 용도지역·지구 자료간 불부합 실태와 원인을 분석하고, 이러한 문제를 해결할 수 있는 방안으로서 자료간 연관성을 고려한 데이터모델링 방안을 제시하였다.

• ETRI Journal
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• 제40권5호
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• pp.570-581
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• 2018

This work analyzes the performance of implementable detectors for the multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) technique under specific and realistic operation system conditions, including antenna correlation and array configuration. A time-domain channel model was used to evaluate the system performance under realistic communication channel and system scenarios, including different channel correlation, modulation order, and antenna array configurations. Several MIMO-OFDM detectors were analyzed for the purpose of achieving high performance combined with high capacity systems and manageable computational complexity. Numerical Monte Carlo simulations demonstrate the channel selectivity effect, while the impact of the number of antennas, adoption of linear against heuristic-based detection schemes, and the spatial correlation effect under linear and planar antenna arrays are analyzed in the MIMO-OFDM context.