The Experts below are selected from a list of 324 Experts worldwide ranked by ideXlab platform

Mu Der Jeng - One of the best experts on this subject based on the ideXlab platform.

  • ERCN-merged nets and their analysis using siphons
    IEEE Transactions on Robotics and Automation, 1999
    Co-Authors: Mu Der Jeng
    Abstract:

    This paper generalizes the modular approach proposed by Jeng and DiCesare (1995) for modeling manufacturing systems with shared resources. First, the-dynamic behavior of each resource is modeled separately using extended resource control nets (ERCNs). An important feature of ERCNs is their capability to express explicitly assembly operations and parallel processes, which is not possible with resource control nets. Interactions among the resources are then modeled through merging of common transitions and common transition subnets. This paper provides conditions, expressed in terms of siphons, under which reversibility and liveness of the integrated model are obtained. Relations between siphons, Circular Structure and Circular-wait are formally established.

  • Synthesis of extended resource control nets using siphons
    SMC'98 Conference Proceedings. 1998 IEEE International Conference on Systems Man and Cybernetics (Cat. No.98CH36218), 1998
    Co-Authors: Mu Der Jeng
    Abstract:

    This paper generalizes the modular approach proposed by Jeng and DiCesare (1995) for modelling manufacturing systems with shared resources. First the dynamic behaviour of each resource is modelled separately using extended resource control nets. An important feature of ERCN is their capability to express explicitly assembly operations and parallel processes, which is not possible with resource control nets. Interactions among the resources are then modelled through merging of common transitions and common transition subnets. This paper provides conditions, expressed in terms of siphons, under which reversibility and liveness of the integrated model are obtained. Relations between siphons, Circular Structure and Circular-wait are formally established.

  • Synthesis of resource control nets using siphons
    1997 IEEE International Conference on Systems, Man, and Cybernetics. Computational Cybernetics and Simulation, 1997
    Co-Authors: Mu Der Jeng, Xiaolan Xie
    Abstract:

    This paper addresses the synthesis of Petri nets for modelling manufacturing systems with shared resources. It takes a resource point of view and adopts a modular modelling approach. First the dynamic behaviour of each resource is modelled separately using resource control nets, strongly connected state machines with one place being marked initially. Interactions among the resources are then modelled through merging of common transitions and common transition subnets. This paper provides conditions, expressed in terms of siphons, under which reversibility and liveness of the integrated model are obtained. Relations between siphons, Circular Structure and Circular-wait are formally established

Jin Jang - One of the best experts on this subject based on the ideXlab platform.

  • Circular Structure for High Mechanical Bending Stability of a-IGZO TFTs
    IEEE Journal of the Electron Devices Society, 2017
    Co-Authors: Mallory Mativenga, Younwoo Choe, Jae Gwang Um, Jin Jang
    Abstract:

    We employ a Circular (Corbino) thin-film transistor (TFT) Structure, in which the outer-ring is the drain and the inner-ring is the source, to improve the stability of amorphous-indium-gallium- zinc-oxide TFTs under tensile bending strain. We attribute the stability improvement to a more uniform electric field distribution across the Circular channel, as it is isolated from local electric field crowding at sharp corners or channel edges. In addition, the effect of strain-induced increase in channel charge concentration is small in Corbino TFTs, owing to the larger outer-ring electrode, which depletes more electrons than the drain of rectangular TFTs. Furthermore, the Circular shape results in bending direction independence, which is very important in multi-TFT circuits, where TFT orientation varies with position.

Mingxin Wang - One of the best experts on this subject based on the ideXlab platform.

  • A Backstepping Based Dynamic Surface Control Method for a Class of Non-lower Triangular Nonlinear Systems
    2019 Chinese Control Conference (CCC), 2019
    Co-Authors: Mingxin Wang
    Abstract:

    An approach of tracking control design was presented for a class of non-lower triangular nonlinear systems by combining techniques of backstepping and dynamic surface control. At each step of design, a backstepping based virtual control law or actual control law was established to stabilize the corresponding subsystem. To deal with Circular Structure problem of control, a first-order low-pass filter was employed to process virtual control signal at each intermediate step of recursive design. Stability results of the closed-loop system showed that all signals are semi-globally uniformly ultimately bounded. Further more, the steady-state tracking error can be guaranteed to converge to an arbitrarily small neighborhood of zero by choosing parameters appropriately. The efficacy of the design was demonstrated via a simulation example.

  • A DSC Based Adaptive Control Scheme for A Class of Uncertain Non-lower Triangular Nonlinear Systems
    2019 IEEE 8th Data Driven Control and Learning Systems Conference (DDCLS), 2019
    Co-Authors: Mingxin Wang
    Abstract:

    An adaptive tracking controller design method is developed for a class of nonlinear systems with non-lower triangular form and linear parameterized uncertainties by combining backstepping and dynamic surface control (DSC) technology. In the design, traditional backstepping design process is used to establish control laws recursively, and unknown parameters of control laws are estimated online. By using DSC technology, the problem of Circular Structure of the controller is eliminated. Stability results of closed-loop system show that the uniform ultimate boundedness of closed-loop system signals can be guaranteed. Besides, the steady state tracking error of the system can be adjusted to a small neighborhood of zero by selecting appropriate control parameters. The efficacy of the designed approach is demonstrated via a numerical simulation example.

M.e. Zervakis - One of the best experts on this subject based on the ideXlab platform.

  • Robust controller design: mixed H/sup 2/ performance optimization for linear discrete-time systems
    Proceedings of 1995 American Control Conference - ACC'95, 1995
    Co-Authors: Jiann-shiou Yang, M.e. Zervakis
    Abstract:

    The feedback controller design for linear time-invariant discrete-time systems via minimizing the H/sup 2/-norm of a mixed sensitivity criterion is revisited. By borrowing some of the techniques from signal/image processing, a new approach is presented to tackle the H/sup 2/-norm control problem. Operating in the discrete Fourier transform (DFT) domain, we construct a minimization problem in the l/sup 2/-space to approximate the original H/sup 2/-norm problem. The approximation in such a setting is sufficient for a reasonably small number of DFT-point chosen due to the stability and short-duration characteristics of the matrix elements involved in the design problem. Via the partially block Circular Structure of the matrices involved in the DFT domain, the l/sup 2/ vector-optimization problem can be efficiently solved through matrix algebraic techniques.

Shalom H. Schwartz - One of the best experts on this subject based on the ideXlab platform.

  • Basic Human Values: theory, methods, and application
    2020
    Co-Authors: Shalom H. Schwartz
    Abstract:

    Basic Human Values: theory, methods, and application (by Shalom H. Schwartz) - ABSTRACT: This paper presents the Values Theory in its conceptual and applicative aspects. The Values Theory identifies ten basic motivationally distinct values recognized by people in virtually all cultures, and it specifies the dynamics of conflicts and congruence among these values, and values priority. Especially striking is the emergence of the same Circular Structure of relations among values across countries and measurement instruments, and the same also applies to conflicts between specific values. The Values Theory provides a framework for relating the system of ten values to behaviour, personality and attitudinal variables. Suggestion for future research are also proposed, such as the need of addressing the possible interactions among background variables.

  • Testing the Circular Structure and importance hierarchy of value states in real-time behaviors
    Journal of Research in Personality, 2018
    Co-Authors: Ewa Skimina, Jan Cieciuch, Shalom H. Schwartz, Eldad Davidov, René Algesheimer
    Abstract:

    Abstract This research is the first to assess directly Schwartz’s claim that the Circular Structure of values derives from value compatibilities or conflicts experienced in real-time behaviors. We differentiate two types of values: value traits guide perception and behavior over time and situations and value states guide real-time behavioral acts. We measured the value states of 374 participants for 13,873 behavioral acts with experience sampling, distinguishing volitional from non-volitional acts. As hypothesized, value states for volitional acts, but not for non-volitional acts reproduced the Circular value Structure. The importance hierarchies of value states differed substantially from the importance hierarchy of value traits, suggesting that the importance of value states depends more on situations than on the hierarchy of value traits.

  • stability and change of basic personal values in early adulthood an 8 year longitudinal study
    Journal of Research in Personality, 2016
    Co-Authors: Michele Vecchione, Shalom H. Schwartz, Guido Alessandri, Anna K Doring, Valeria Castellani, Maria Giovanna Caprara
    Abstract:

    We examined four types of stability and change in values during young adulthood. 270 respondents (aged 20–28, 54% female) completed the Portrait Values Questionnaire at three time points, separated by 4 years. Rank-order stability coefficients of the 10 values averaged 0.69 (T1-T2) and 0.77 (T2-T3). The mean importance of conservation, self-transcendence, and power values increased over time, the mean importance of achievement values decreased, and openness to change values remained stable. For 75% of respondents, the correlations of the within-person value hierarchies exceeded 0.45 from T1 to T2 and 0.61 from T2 to T3. Correlations among individual change scores for the 10 values formed coherent patterns of value change that mirror the Circular Structure of Schwartz’s theory.