• Title/Summary/Keyword: story model

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A Design of Robust Vibration Control System for a Four-story Shear Structure (4층 층상 구조물에 대한 강인한 진동 제어 시스템 설계)

  • Yang, J.H.;Jeong, H.H.;Jeong, H.J.
    • Journal of Power System Engineering
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    • v.7 no.1
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    • pp.60-67
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    • 2003
  • This paper introduces basic study how to restrain the vibration of a four story shear structure. We have modeled a four story shear structure mathematically and have identified each parameters by experiment. We have gotten a reduced nominal model through modal analyzing method and the $H_{\infty}$ control theory is used in the control system design to get the robust controller. It's shown that the desirable performances is confirmed through the mathematical simulation. And a designed controller applying the $H_{\infty}$ control theory shows the good performance for the impulse disturbance through the simulation results. That is, the robustness of this control system is confirmed for the ability of disturbance rejection and modeling error.

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Vibration Control of Shear Wall-Frame System using Energy Dissipation Devices (에너지 소산형 감쇠기를 이용한 철근콘크리트 전단벽-골조 시스템의 진동제어)

  • Park, Ji-Hun;Kim, Gil-Hwan
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2007.05a
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    • pp.578-581
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    • 2007
  • In this study, the seismic control performance of energy dissipation devices installed in a shear all-frame structure is investigated through nonlinear time history analysis of a 12-story building. Inelastic shear walls are modeled using the multiple vertical line element model (MVLEM) and inelastic columns and girders were modeled using fiber beam elements. For a seismic load increased by 38% compared to the design load, the seismic control performance was analyzed based on the results of a nonlinear time history analysis in terms of the inter-story drift, the story shear and the flexural strain. Friction type dampers was found to performs best if they are installed in the form of a brace adjacent to the shear wall with the friction force of 15 % of the maximum story shear force induced in the original building structure without dampers.

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Seismic vulnerability evaluation of a 32-story reinforced concrete building

  • Memari, A.M.;Motlagh, A.R. Yazdani;Akhtari, M.;Scanlon, A.;Ashtiany, M. Ghafory
    • Structural Engineering and Mechanics
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    • v.7 no.1
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    • pp.1-18
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    • 1999
  • Seismic evaluation of a 32-story reinforced concrete framed tube building is performed by checking damageability, safety, and toughness limit states. The evaluation is based on Standard 2800 (Iranian seismic code) which recommends equivalent lateral static force, modal superposition, or time history dynamic analysis methods to be applied. A three dimensional linearly elastic model checked by ambient vibration test results is used for the evaluation. Accelerograms of three earthquakes as well as linearly elastic design response spectra are used for dynamic analysis. Damageability is checked by considering story drift ratios. Safety is evaluated by comparing demands and capacities at the story and element force levels. Finally, toughness is studied in terms of curvature ductility of members. The paper explains the methodology selected and various aspects in detail.

Story Drift of a Frame with Column Flange Bolted-Beam Web Welded Double Angle Connections (더블앵글로 접합된 골조의 수평처짐)

  • Yang, Jae-Guen;Kim, Ho-Keun;Kim, Ki-Hwan
    • Journal of Korean Association for Spatial Structures
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    • v.3 no.3 s.9
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    • pp.95-103
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    • 2003
  • Frame is one of the most commonly used structural systems for the resistance of applied loads. Many researchers have recently conducted their studies to investigate the effect of several parameters such as the connection flexibility, boundary condition of each support, beam-to-column stiffness ratio. These parameters play important roles on the characteristic behavior of frames. A simplified spring model is proposed to obtain the story drifts of frames with various beam-to-column connection stiffnesses in this research. A point bracing system with adequate spring stiffness is also suggested to establish the relationship between the applied load and the resisting translational spring stiffness within the limit state of story drift.

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A method for dynamic analysis of frame-hinged shear wall structures

  • Bozdogan, Kanat Burak;Ozturk, Duygu
    • Earthquakes and Structures
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    • v.11 no.1
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    • pp.45-61
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    • 2016
  • Structures with soft story irregularity have been seriously damaged in earthquakes. Therefore, the analysis of dynamic behavior of structures with soft story irregularity is of great value and relevance. In this study, a certain method will be used to discover the displacements and internal forces and to find out results about soft story irregularity. For this study, the multi-story frame-hinged shear wall system has been used as a model according to the continuous calculation system. The dynamic characteristics of the system have been obtained by analyzing the governing differential equation of the system. The dynamic characteristics have been calculated for a practical and quick analysis as indicated in tables. The suggested method is wholly based on manual calculation. A spectral analysis can be easily conducted with the help of Tables provided by this study. A sample has been solved and compared to the finite elements method to study the suitability of the method suggested at the end of this study.

A Study of Story Visualization Based on Variation of Characters Relationship by Time (등장인물들의 시간적 관계 변화에 기초한 스토리 가시화에 관한 연구)

  • Park, Seung-Bo;Baek, Yeong Tae
    • Journal of the Korea Society of Computer and Information
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    • v.18 no.3
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    • pp.119-126
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    • 2013
  • In this paper, we propose and describe the system to visualize the story of contents such as movies and novels. Character-net is applied as story model in order to visualize story. However, it is the form to be accumulated for total movie story, though it can depict the relationship between characters. We have developed the system that analyzes and shows the variation of Character-net and characters' tendency in order to represent story variation depending on movie progression. This system is composed by two windows that can play and analyze sequential Character-nets by time, and can analyze time variant graph of characters' degree centrality. First window has a function that supports to find important story points like the scenes that main characters appear or meet firstly. Second window supports a function that track each character's tendency or a variation of his tendency through analyzing in-degree graph and out-degree. This paper describes the proposed system and discusses additional requirements.

Modelling of reinforced concrete flat slab-column connections for system-scale seismic analyses of high-rise buildings

  • T.Y. Yang;O. AlHarras;L. Tobber;O. Sargazi
    • Computers and Concrete
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    • v.31 no.1
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    • pp.23-32
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    • 2023
  • Reinforced concrete flat slab (RCFS) with columns is a standard gravity floor system for tall buildings in North America. Typically, RCFS-column connections are designed to resist gravity loads, and their contribution to resisting seismic forces is ignored. However, past experimental research has shown that RCFS-column connections have some strength and ductility, which may not be ignored. Advanced numerical models have been developed in the past to determine the nonlinear cyclic behavior of RCFS-column connections. However, these models are either too complicated for nonlinear dynamic analysis of an entire building or not developed to model the behavior of modern RCFS-column connections. This paper proposes a new nonlinear model suitable for modern RCFS-column connections. The numerical model is verified using experimental data of specimens with various material and reinforcement properties. A 40-story RC shear wall building was designed and analyzed to investigate the influence of RCFS on the global response of tall concrete buildings. The seismic responses of the building with and without the RCFS were modelled and compared. The results show that the modelling of RCFS has a significant impact on the inter-story drifts and force demands on both the seismic force-resisting and gravity elements.

Story-based Information Retrieval (스토리 기반의 정보 검색 연구)

  • You, Eun-Soon;Park, Seung-Bo
    • Journal of Intelligence and Information Systems
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    • v.19 no.4
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    • pp.81-96
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    • 2013
  • Video information retrieval has become a very important issue because of the explosive increase in video data from Web content development. Meanwhile, content-based video analysis using visual features has been the main source for video information retrieval and browsing. Content in video can be represented with content-based analysis techniques, which can extract various features from audio-visual data such as frames, shots, colors, texture, or shape. Moreover, similarity between videos can be measured through content-based analysis. However, a movie that is one of typical types of video data is organized by story as well as audio-visual data. This causes a semantic gap between significant information recognized by people and information resulting from content-based analysis, when content-based video analysis using only audio-visual data of low level is applied to information retrieval of movie. The reason for this semantic gap is that the story line for a movie is high level information, with relationships in the content that changes as the movie progresses. Information retrieval related to the story line of a movie cannot be executed by only content-based analysis techniques. A formal model is needed, which can determine relationships among movie contents, or track meaning changes, in order to accurately retrieve the story information. Recently, story-based video analysis techniques have emerged using a social network concept for story information retrieval. These approaches represent a story by using the relationships between characters in a movie, but these approaches have problems. First, they do not express dynamic changes in relationships between characters according to story development. Second, they miss profound information, such as emotions indicating the identities and psychological states of the characters. Emotion is essential to understanding a character's motivation, conflict, and resolution. Third, they do not take account of events and background that contribute to the story. As a result, this paper reviews the importance and weaknesses of previous video analysis methods ranging from content-based approaches to story analysis based on social network. Also, we suggest necessary elements, such as character, background, and events, based on narrative structures introduced in the literature. We extract characters' emotional words from the script of the movie Pretty Woman by using the hierarchical attribute of WordNet, which is an extensive English thesaurus. WordNet offers relationships between words (e.g., synonyms, hypernyms, hyponyms, antonyms). We present a method to visualize the emotional pattern of a character over time. Second, a character's inner nature must be predetermined in order to model a character arc that can depict the character's growth and development. To this end, we analyze the amount of the character's dialogue in the script and track the character's inner nature using social network concepts, such as in-degree (incoming links) and out-degree (outgoing links). Additionally, we propose a method that can track a character's inner nature by tracing indices such as degree, in-degree, and out-degree of the character network in a movie through its progression. Finally, the spatial background where characters meet and where events take place is an important element in the story. We take advantage of the movie script to extracting significant spatial background and suggest a scene map describing spatial arrangements and distances in the movie. Important places where main characters first meet or where they stay during long periods of time can be extracted through this scene map. In view of the aforementioned three elements (character, event, background), we extract a variety of information related to the story and evaluate the performance of the proposed method. We can track story information extracted over time and detect a change in the character's emotion or inner nature, spatial movement, and conflicts and resolutions in the story.

An Intervention Model to Help Clients to Seek Their Own Hope Experiences: The Narrative Communication Model of Hope Seeking Intervention

  • Kim, Dal Sook;Kim, Hesook Suzie;Thorne, Sally
    • Journal of Hospice and Palliative Care
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    • v.20 no.1
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    • pp.1-7
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    • 2017
  • The paper describes The Narrative Communication Model of Hope Seeking Intervention developed by the authors as an approach to help clients to have individually specific hope experiences. The Model is founded upon the existential conceptualization of hope that views hope as subjective, unique experiences of meaning and processes. The Model has been developed based on the findings both in the literature and the authors' work on the nature of hope and hope experiences and integrating the concept of hope as subjective meanings and experiences, the processes of story-telling and the concept of narrative configuration as a way to engage in person-specific experiences, and person-centered communication. The results of the experiences with the application of the model in a study are used to clarify the model further. The Model incorporating story-telling and narrative construction through person-centered communication is identified in three components-the story-telling, the narrative intervention, and the communication components. These components are processed as an intervention to culminate into person-specific hope experiences in which active participation of clients as the story-teller and of interventionist as the communicative facilitator is required to produce narratives of hope with individual specific thematic plots that become the basis for hope experiences. The application of the Model has shown positive outcomes in clients with successful seeking of own hope experiences. The success of the Model application seems to depend upon interventionists' understanding of the model and the competency with the application of person-centered communication strategies.

Development of Fashion Show Model using the Historical Culture (역사문화를 활용한 패션쇼 모형 개발)

  • Park, Hyun-Jung
    • Journal of the Korean Society of Costume
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    • v.57 no.10
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    • pp.142-155
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    • 2007
  • The purpose of this study is to develop a fashion show model as a local festival program by designing the costumes of Chosun dynasty from later 16th century to early 17th century and planning a fashion show. The designed costumes are based on the life of the representative poetess, Maechang Lee, from Buan-gun, Jeollabukdo. The planning of the fashion show consists of seven stages, that is, finding a theme, composing the story, designing costumes, choosing music, planning intermission events, producing visuals and booklet, and directing model performances. This paper focuses mainly on finding a theme, composing the story, and designing costumes.