Longitudinal Stability

14,000,000 Leading Edge Experts on the ideXlab platform

Scan Science and Technology

Contact Leading Edge Experts & Companies

Scan Science and Technology

Contact Leading Edge Experts & Companies

The Experts below are selected from a list of 171 Experts worldwide ranked by ideXlab platform

Russell P Tracy - One of the best experts on this subject based on the ideXlab platform.

  • Longitudinal Stability of coagulation fibrinolysis and inflammation factors in stored plasma samples
    Thrombosis and Haemostasis, 2001
    Co-Authors: Michael R Lewis, Peter W Callas, Nancy S Jenny, Russell P Tracy
    Abstract:

    We sought to assess the Longitudinal Stability of risk factors for atherosclerosis and thrombosis, including several coagulation, fibrinolysis, and inflammation factors, in frozen plasma samples stored at -70° C for months or years. We reviewed data collected on 29 different control pools over periods ranging from 7 to 59 months for two functional assays (factor VII and fibrinogen) and seven antigen measurements (C-reactive protein, D-dimer, plasmin-α2-antiplasmin complex, plasminogen activator inhibitor-1, protein C, protein S, and tissue plasminogen activator), totaling more than 15,000 data points. Screening of the data using least squares regression revealed only sporadic associations between monthly means and time, with no consistent trends. Analysis by repeated measures and summary measure methods revealed no evidence of sample degradation over time for the factors studied. Our finding of Longitudinal Stability in the biochemical properties of frozen plasma strengthens the presumption of sample Stability on which molecular epidemiologic studies are based.

Michael R Lewis - One of the best experts on this subject based on the ideXlab platform.

  • Longitudinal Stability of coagulation fibrinolysis and inflammation factors in stored plasma samples
    Thrombosis and Haemostasis, 2001
    Co-Authors: Michael R Lewis, Peter W Callas, Nancy S Jenny, Russell P Tracy
    Abstract:

    We sought to assess the Longitudinal Stability of risk factors for atherosclerosis and thrombosis, including several coagulation, fibrinolysis, and inflammation factors, in frozen plasma samples stored at -70° C for months or years. We reviewed data collected on 29 different control pools over periods ranging from 7 to 59 months for two functional assays (factor VII and fibrinogen) and seven antigen measurements (C-reactive protein, D-dimer, plasmin-α2-antiplasmin complex, plasminogen activator inhibitor-1, protein C, protein S, and tissue plasminogen activator), totaling more than 15,000 data points. Screening of the data using least squares regression revealed only sporadic associations between monthly means and time, with no consistent trends. Analysis by repeated measures and summary measure methods revealed no evidence of sample degradation over time for the factors studied. Our finding of Longitudinal Stability in the biochemical properties of frozen plasma strengthens the presumption of sample Stability on which molecular epidemiologic studies are based.

Guoming Huang - One of the best experts on this subject based on the ideXlab platform.

  • Compensation-Based Robust Decoupling Control System for the Lateral and Longitudinal Stability of Distributed Drive Electric Vehicle
    IEEE ASME Transactions on Mechatronics, 2019
    Co-Authors: Xiaofang Yuan, Guoming Huang
    Abstract:

    The lateral and Longitudinal Stability is important and difficult for a distributed drive electric vehicle (DDEV). Current control methods for the lateral and Longitudinal Stability are designed based on the static model and parameter without considering the uncertain characteristic in the DDEV. To solve this problem, this paper presents a novel compensation-based robust decoupling control system (CRDCS), which consists of a robust decoupling controller (RDC) and a feedback compensation controller (FCC). The RDC can achieve the robust Stability for the DDEV and obtain the decoupling control signals, using a robust inverse model constructed by a radial basis function neural network. The FCC can eliminate the control error caused by the uncertain characteristic in the DDEV, utilizing the compensation control signals obtained by the designed reference model and the model-predictive controller (MPC). The simulation is carried on the Carsim and MATLAB, and the results show that the proposed CRDCS has good robust performance for the lateral and Longitudinal Stability of the DDEV.

Ali Gülhan - One of the best experts on this subject based on the ideXlab platform.

  • Longitudinal Stability measurements of a winged biconic configuration in supersonic flow
    Proceedings of the Institution of Mechanical Engineers Part G: Journal of Aerospace Engineering, 2018
    Co-Authors: Andreas K. Flock, Pascal Heinrich Kringe, Ali Gülhan
    Abstract:

    In this article, a biconic re-entry model was investigated in a blow down wind tunnel at Mach 1.5, 2, 3, and 4. The main focus was on studying the Longitudinal Stability and aerodynamic efficiency in this flying regime. In particular, the influence of wings near the rear part of the model, their wing dihedral, and additional body flaps was investigated. While the purely biconic configuration was unstable, it could be stabilized with wings at a 20° downward pitch and with the additional body flaps. In general, a larger dihedral angle improved pitch stiffness.

Peter W Callas - One of the best experts on this subject based on the ideXlab platform.

  • Longitudinal Stability of coagulation fibrinolysis and inflammation factors in stored plasma samples
    Thrombosis and Haemostasis, 2001
    Co-Authors: Michael R Lewis, Peter W Callas, Nancy S Jenny, Russell P Tracy
    Abstract:

    We sought to assess the Longitudinal Stability of risk factors for atherosclerosis and thrombosis, including several coagulation, fibrinolysis, and inflammation factors, in frozen plasma samples stored at -70° C for months or years. We reviewed data collected on 29 different control pools over periods ranging from 7 to 59 months for two functional assays (factor VII and fibrinogen) and seven antigen measurements (C-reactive protein, D-dimer, plasmin-α2-antiplasmin complex, plasminogen activator inhibitor-1, protein C, protein S, and tissue plasminogen activator), totaling more than 15,000 data points. Screening of the data using least squares regression revealed only sporadic associations between monthly means and time, with no consistent trends. Analysis by repeated measures and summary measure methods revealed no evidence of sample degradation over time for the factors studied. Our finding of Longitudinal Stability in the biochemical properties of frozen plasma strengthens the presumption of sample Stability on which molecular epidemiologic studies are based.