• Title/Summary/Keyword: event-based

Search Result 3,179, Processing Time 0.033 seconds

Supervisor for Real-Time Nondeterministic Discrete Event Systems Under Bounded Time Constraints

  • Park, Seong-Jin;Cho, Kwang-Hyun;Lim, Jong-Tae
    • 제어로봇시스템학회:학술대회논문집
    • /
    • 2001.10a
    • /
    • pp.104.4-104
    • /
    • 2001
  • This paper addresses a supervisory control problem to meet bounded time constraints in real-time nondeterministic discrete event systems (DESs) represented as timed transition models. For a timed language specification representing a bounded time constraint, this paper introduces the notions of trace-controllability and time-controllability. Based on the notions, this paper presents the necessary and sufficient conditions for the existence of a supervisor for a real-time nondeterministic DES to achieve the specification.

  • PDF

An Implementation and Performance Analysis of a CORBA Compliant Reflective Memory based Real-Time Communication Service (반영 메모리 기반 코바 실시간 통신 서비스 구현 및 성능 분석)

  • 최영근;정선태
    • 제어로봇시스템학회:학술대회논문집
    • /
    • 2000.10a
    • /
    • pp.32-32
    • /
    • 2000
  • We present CReMeS, a CORBA-compliant design and implementation of a new real-time communication service. It provide for of a new real-time communication service. It provide for efficient, predictable, and scalable communication between information producers and consumers. Experimental results demonstrate that CReMeS can achieve better performance, predictability and scalability than a Real-Time implementaion of the CORBA Event Service.

  • PDF

The Active Way of Trauma: Receiving the Return of the Past (도래하는 과거를 수용하는 트라우마의 능동적인 방편)

  • Seoh, Gil-Wan
    • Cross-Cultural Studies
    • /
    • v.41
    • /
    • pp.33-56
    • /
    • 2015
  • Trauma studies have provided useful models for dealing with the catastrophic and disastrous events that an individual and collective group experience. Most important of all, the perspective of post-structuralist trauma study, including Cathy Caruth, became a paradigmatic model and it has been applied to almost all contexts of life. The perspective of this study model, which is called an "event-based model of trauma," focuses on the literal registration of the traumatic event and the accurate and immediate recall of the past. The person directly involved in the event becomes the passive bearer transmitting the truth of a traumatic event. From this perspective, the traumatic subject only undergoes and endures the event and cannot play an active role in constructing trauma and dealing with it. Eventually, the truth of trauma has to be obtained at the cost of the traumatic subject's autonomy and the possibility of his/her agency. The problem here is that the truth, which is reencountered through the literal return of the past, obtained at the cost of the subject's autonomy, strikes a rather fatal blow to the person, than gives help for resolving many of matters surrounding traumatic experience and curing trauma. This suggests that the active way of dealing with trauma on the part of the traumatic subject, rather than the traumatic event itself, is demanded. Furthermore, because more recently, images of disastrous events were viewed "live" by audiences and an immediacy to the event is replicated in public discourse about them, the event becomes more immediately traumatic and there is a more strong presumption that people regard themselves as traumatic victims than before. This is the reason that we must explore an active way dealing with trauma on more human position at this time. This essay aims to examine the limits of the paradigmatic model of trauma study, an "event-based model of trauma," critically through a literary, theoretical text in which it reveals how the literal return of the traumatic past have a fatal effect on the victim; and hopes to suggest "the narrative memory" as a way to deal with trauma from a more humanistic perspective.

A COG Variable Analysis of Air-rolling-breakfall in Judo (유도 공중회전낙법의 COG변인 분석)

  • Kim, Eui-Hwan;Chung, Chae-Wook;Kim, Sung-Sup
    • Korean Journal of Applied Biomechanics
    • /
    • v.15 no.3
    • /
    • pp.117-132
    • /
    • 2005
  • It was to study a following research of "A Kinematic Analysis of Air-rolling-breakfall in Judo". The purpose of this study was to analyze the Center of Gravity(COG) variables when performing Air-rolling-breakfall motion, while passing forward over(PFO) to the vertical-hurdles(2m height, take off board 1m height) in judo. Subjects were four males of Y. University squad, who were trainees of the demonstration exhibition team, representatives of national level judoists and were filmed by four 5-VHS 16mm video cameras(60field/sec.) through the three dimensional film analysis methods.COG variable were anterior-posterior directional COG and linear velocity of COG, vertical directional COG and linear velocity of COG. The data collections of this study were digitized by KWON3D program computed The data were standardized using cubic spline interpolation based by calculating the mean values and the standard deviation calculated for each variables. When performing the Air-rolling-breakfall, from the data analysis and discussions, the conclusions were as follows : 1. Anterior-posterior directional COG(APD-COG) when performing Air-rolling-breakfall motion, while PFO over to the vertical-hurdles(2m height) in judo. The range of APD-COG by forward was $0.31{\sim}0.41m$ in take-off position(event 1), $1.20{\sim}1.33m$ in the air-top position(event 2), $2.12{\sim}2.30m$ in the touch-down position(event 3), gradually and $2.14{\sim}2.32m$ in safety breakfall position(event 4), respectively. 2 The linear velocity of APD-COG was $1.03{\sim}2.14m/sec$. in take-off position(event 1), $1.97{\sim}2.22m/sec$. gradually in the air-top position(event 2), $1.05{\sim}1.32m/sec$. in the touch-down position (event 3), gradual decrease and $0.91{\sim}1.23m/sec$. in the safety breakfall position(event 4), respectively. 3. The vertical directional COG(VD-COG) when performing Air-rolling-breakfall motion, while PFO to the vertical-hurdles(2m height) in judo. The range of VD-COG toward upward from mat was $1.35{\sim}1.46m$ in take-off position(event 1), the highest $2.07{\sim}2.23m$ in the air-top position(event 2), and after rapid decrease $0.3{\sim}0.58m$ in the touch-down position(event 3), gradual decrease $0.22{\sim}0.50m$ in safety breakfall position(event 4), respectively. 4. The linear velocity of VlJ.COG was $1.60{\sim}1.87m/sec$. in take-off position(event 1), $0.03{\sim}0.08m/sec$. gradually in the air-top position(event 2), $-4.37{\sim}\;-4.76m/sec$. gradual decrease in the touch-down position(event 3), gradual decrease and -4.40${\sim}\;-4.77m/sec$. in safety breakfall position(event 4), respectively. When performing Air-rolling-breakfall showed parabolic movement from take-off position to air-top position, and after showed vertical fall movement from air-top position to safety breakfall. In conclusion, Ukemi(breakfall) is safety fall method Therefore, actions need for performing safety fall movement, that decrease and minimize shock and impact during Air-rolling-breakfall from take-off board action to air-top position must be maximize of angular momentum, and after must be minimize in touch-down position and safety breakfall position.

Apparatus Design for event record of digital substation based on SCL (SCL 기반 디지털 변전소 이벤트 기록장치 설계)

  • Lee, N.H.;Cho, Y.I.;Jang, B.T.;An, Y.H.;Hwang, K.C.
    • Proceedings of the KIEE Conference
    • /
    • 2007.11b
    • /
    • pp.60-62
    • /
    • 2007
  • This paper presents apparatus and its method for event record of digital substation based on SCL files, which can save communication messages of a variety of IEC61850 international standard applied substation events such as fault. In particular, the device has ability to analyze all of the events and faults, and performs its functions based on SCL files.

  • PDF

Event based session timeout management policy (사건 기반 세션 Timeout 관리 정책)

  • Choi, Chang-Seok;Cho, Hak-Bong;Moon, Jong-Wook;Jung, Gi-Hyun;Choi, Kyung-Hee
    • Proceedings of the Korea Information Processing Society Conference
    • /
    • 2003.11a
    • /
    • pp.439-442
    • /
    • 2003
  • 세션 관리 시스템에서 많은 세션에 대한 timeout 처리 시 발생하는 오버헤드를 줄이기 위한 방법으로 기존의 time based timeout 관리 방식이 아닌, 세션 관리 시스템의 성격에 적합한, event based timeout 관리 방법을 제시하고 실험을 통해 확인해 본다.

  • PDF

Conditional Event Matching Prediction of Nonlinear Phenomena of Insulator Pollution in Coastal Substations Based on Actual Database

  • Nakamura, Masatoshi;Goto, Satoru;Katafuchi, Tatsuro;Taniguchi, Takashi
    • 제어로봇시스템학회:학술대회논문집
    • /
    • 1999.10a
    • /
    • pp.157-160
    • /
    • 1999
  • A prediction method of conditional event matching pre-diction (EMP) for a purpose of predicting nonlinear phenomena of insulator pollution was proposed in this paper. The EMP was used if the conditional probability for increase of insulator pollution exceeded a threshold value. A performance of the EMP was strongly related to selection of database of events and a closeness function. By use of the prediction of the insulator pollution based on the conditional EMP, reliable decision making for the washing timing of the polluted insulators was e-valuated based on actual data in Kasatsu substation, Japan.

  • PDF

Human error analysis in nuclear power plants based on a cognitive model (인지과정모형에 기반한 원자력발전소 인적오류 분석)

  • 윤완철;이용희;김영수
    • Journal of the Ergonomics Society of Korea
    • /
    • v.13 no.2
    • /
    • pp.33-41
    • /
    • 1994
  • The paper presents a new scheme and a support system for the analysis sof hyman errors in nuclear power plants based on a cognitive model. We discusse the problems identified in current managerial analysis, and propose a new approach that frames the description of human activities according to a human decision making modle, so that it could provide a better reconstruction of a sequence of event suspected of involving human errors. This sophistcated approach becomes practical for the field application with the support of a computerized aiding system. The model-based event re-construction method is expected to enable the analysts to produce more informative reports, which in turn heop to derive appropriate counter- measures to reduce the possibility of the analyzed human errors.

  • PDF