• Title/Summary/Keyword: temporal relationship

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A Multimedia Query Language for Object-Oriented Multimedia Databases (객체 지향 멀티미디어 데이타베이스를 위한 멀티미디어 질의어)

  • 노윤묵;이석호;김규철
    • Journal of the Korean Institute of Telematics and Electronics B
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    • v.32B no.5
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    • pp.671-682
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    • 1995
  • In this paper, we propose a multimedia query language MQL which defines and manipulates multimedia data as integration of monomedia data in time and space. The MQL is designed for a multimedia data model, called the object-relationship model, and based on the multimedia object calculus which formally describes operations on multimedia data. The SQL- like syntax for class definition and object manipulation, such as retrieval, insert, update, and delete, is defined. We show how the MQL can represent the user queries using composite temporal-spatial class structures and various relationships, such as equivalence and sequence.

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Video Modeling Supporting Spatio-Temporal Relationship (시공간 관계를 지원하는 비디오 모델링)

  • 복경수;유재수
    • Proceedings of the Korean Information Science Society Conference
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    • 2001.10a
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    • pp.256-258
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    • 2001
  • 최근 컴퓨터 응용 기술의 발달로 비디오 데이터에 대한 처리의 필요성이 증가하고 있다. 비 정형화된 비디오에 대한 검색을 효율적으로 처리하기 위해서는 비디오의 논리적 구조와 의미적 내용을 표현할 수 있는 비디오 모델링 기법이 필요하다. 본 논문에서는 비디오의 논리적 구조는 물론 비디오 내에 포함된 의미적인 내용을 표현하기 위한 비디오 모델링 방법을 제안한다. 제안하는 모델링 기법은 의미적 내용을 효과적으로 표현하지 못하는 기존의 구조 모델링의 문제점을 해결하고 의미적인 내용들간의 시공간적 관계를 정의한다. 또한 시공간적 관계를 통한 의미적 내용에 대한 검색을 효과적으로 수행할 수 있도록 한다.

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Multimedia Presentation using TSR Tree (TSR 트리를 이용한 멀티미디어 프리젠테이션)

  • 김찬홍;박유현;이중화;김경석
    • Proceedings of the Korean Information Science Society Conference
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    • 1999.10a
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    • pp.24-26
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    • 1999
  • 멀티미디어 데이터베이스 시스템에서 프리젠테이션은 질의 결과 멀티미디어 데이터들을 처리하여 사람이 인식할 수 있는 형태로 사용자에게 보여주는 것을 말한다. 멀티미디어 데이터간에는 시간적인 관계와 공간적인 관계가 존재하고, 이 두 관계는 상호 긴밀히 연관되어 있으므로, 시간 관계와 공간 관계를 통합적으로 표현할 수 있는 기법이 필요하다. 특히, 여러 미디어들이 시간적으로 중요하므로 본 논문에서는 시간 관계와 공간 관계를 통합적으로 표현하여 프리젠테이션 할 때에 사용자가 제시한 미디어의 앞/ 뒤 관계를 동적으로 나타낼 수 있는 TSR(Temporal and Spatial Relationship) 트리를 제안한다.

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Longitudinal relationship between depression and parents' child-rearing attitudes for adolescent (부모의 양육방식이 성별 청소년의 우울에 미치는 영향)

  • Yee, Nan Hee;Song, Tae-Min
    • Korean Journal of Health Education and Promotion
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    • v.32 no.1
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    • pp.45-55
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    • 2015
  • Objectives: This study is aimed at exploring the temporal developmental relationship of adolescent depression and parents' child-rearing attitudes, and to examine gender differences in the relationship. The middle school students of the 2011-2013 1st Korea Children and Youth Panel data were used for analysis and the sample consisted of 2.073 individuals. Methods: Research questions were answered through the Latent Growth Model and Autoregressive Cross-Lagged Model. Results: As the results of the Latent Growth Model show, adolescent depression declines as time goes by and there are differences in the depression felt by individuals. An autoregressive cross-lagged model and multiple group analysis were executed by gender. The results show significant gender differences in the relationship between depression and Parents' child-rearing attitudes. Parental neglect has shown differences influencing adolescents depression between males and females. However, in case of parental abuse, no differences between males and females were observed. Conclusion: The results of this study imply that the policy on depression should be carefully considered when preparing for interventions targeting adolescents by gender.

A Study on the Characteristics of Natural Organic Matter and Disinfection By-Product Formation in the Juam Reservoir

  • Shin, Dae-Yewn;Moon, Ok-Ran;Yoon, Mi-Ran;Kim, Nam-Joung;Kang, Gang-Unn;Seo, Gwang-Yeob
    • Proceedings of the Korean Environmental Health Society Conference
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    • 2005.06a
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    • pp.259-262
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    • 2005
  • This study aims to identify the relationship between characteristics of aqueous organic matter and chlorination by-products formation potential according to temporal effect of Juam reservoir in Sun-Choen. The molecular weight distribution and chemical composition of precursors and their relationship with disinfection by-products(DBPs) were investigated. Most of the organic matters was responsible for the major DBP precursors in the raw water are small compounds with a molecular weight less than IKDa, Aromatic contents determined by SUVA correlated well with DBPs, THMs, and HAAs formation. Especially, THMFP/DOC showed better correlation with SUVA than HAAFP/DOC and DBPFP/DOC with SUVA in Juam reservoir. Therefore, effective removal of small molecules or hydrophobic organic matter prior to disinfection process will significantly reduce the DBP concentration in the finished water.

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Issues Related to the Use of Time Series in Model Building and Analysis: Review Article

  • Wei, William W.S.
    • Communications for Statistical Applications and Methods
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    • v.22 no.3
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    • pp.209-222
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    • 2015
  • Time series are used in many studies for model building and analysis. We must be very careful to understand the kind of time series data used in the analysis. In this review article, we will begin with some issues related to the use of aggregate and systematic sampling time series. Since several time series are often used in a study of the relationship of variables, we will also consider vector time series modeling and analysis. Although the basic procedures of model building between univariate time series and vector time series are the same, there are some important phenomena which are unique to vector time series. Therefore, we will also discuss some issues related to vector time models. Understanding these issues is important when we use time series data in modeling and analysis, regardless of whether it is a univariate or multivariate time series.

Gödel's Hermeneutics of the Relationship between Relativity Theory and Idealistic Philosophy (괴델이 해석하는 상대성이론과 관념론철학의 관계)

  • Hyun, Woosik
    • Journal for History of Mathematics
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    • v.27 no.1
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    • pp.59-66
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    • 2014
  • This interdisciplinary study explores G$\ddot{o}$del's hermeneutics of the relationship between relativity theory and idealistic philosophy in terms of time. For G$\ddot{o}$del, Einstein's contribution to the physical realization of idealistic philosophy would be remarkable. We start with a historical background around G$\ddot{o}$del's paper for Einstein(1949a). From the perspective of G$\ddot{o}$del's cosmology, the second part addresses the relative nature of time, and the next then investigates the rotating model of universes. G$\ddot{o}$del's own results show that the temporal conditions of relativity and idealistic philosophy are satisfiable in the mathematical model of rotating universes. Thus, it could be asserted to travel into any region of the past, present or future, and back again.

Infants and Toddlers' Logico-mathematical Thinking Processes in a Block Building Activity (블록 쌓기 활동에서 나타난 만 0, 1, 2세반 영유아의 논리·수학적 사고)

  • Shin, Eun Soo;Kim, Hyun Jin;Lee, Sun Myoung
    • Korean Journal of Child Studies
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    • v.36 no.2
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    • pp.75-94
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    • 2015
  • The main purpose of this study was to examine the various aspects of logico-mathematical thinking and its development by observing a block building activity undertaken by infants and toddlers. The subjects comprised 73 young children from between the ages of 12- to 41-months-old. The interviewee was individually asked to build "something tall", making use of 20 blocks. The results of this study were, first, a regular increase by age is seen in congruence, the vertical use of flat blocks, and innovative ways of using triangular blocks. Second, many types of logico-mathematical thinking processes, such as classification, seriation, spatial relationship and temporal relationship, were shown during the block building activities on the part of the 12- to 41-months-olds who took part in this study.

Video Meta-data model for Adaptive Video-on-Demand System (적응형 VOD 시스템을 위한 비디오 메타 데이터 모델)

  • Jeon, Keun-Hwan;Shin, Ye-Ho
    • 한국컴퓨터산업교육학회:학술대회논문집
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    • 2003.11a
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    • pp.127-133
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    • 2003
  • The data models which express all types of video information physically and logically. and the definition of spatiotemporal relationship of video data objects In This paper, we classifies meta-model for efficient management on spatiotemporal relationship between two objects in video image data, suggests meta-models based on Rambaugh's OMT technique, and expanded user model to apply the adaptive model, established from hyper-media or web agent to VOD. The proposed meta-model uses data's special physical feature: the effects of camera's and editing effects of shot, and 17 spatial relations on Allen's 13 temporal relations, topology and direction to include logical presentation of spatiotemporal relation for possible spatiotemporal reference and having unspecified applied mediocrity.

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Evaluation of color reproduction characteristics of CRT display system (CRT 디스플레이 시스템의 색재현성 평가)

  • 김홍석;박승옥;백정기
    • Korean Journal of Optics and Photonics
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    • v.10 no.3
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    • pp.259-264
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    • 1999
  • The relationship is derived for color CRT display system between the spectral radian existence emitted and digital inputs. The amount of spectral radiant existence depends on the characteristics of the video board, electric circuits, and CRT as well as digital inputs. Especially, the function of this relationship changes as the amplifier gain and offset voltage of electric circuits. In this study, we set the test display system on the optimum state which satisfies gun independence characteristics by using the contrast and the brightness controls of display. Temporal stability, special uniformity, and color distinction of CRT display system are evaluated at the optimum state. Also contrasts in dark room and illuminated room are compared.

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