This paper investigates the capability of the Extended Projected Profile (EPP) trajectory down-link definition to facilitate air-ground trajectory synchronisation. It will be demonstrated that the EPP allows for practically unambiguous description of aircraft intent, but that unknown aircraft performance characteristics such as climb thrust derate, anti-ice and tail-specific drag adjustments ca...

Although vibration monitoring is a popular method to monitor and assess dynamic structures, quantification of linearity or nonlinearity of the dynamic responses remains a challenging problem. We investigate the delay vector variance (DVV) method in this regard in a comprehensive manner to establish the degree to which a change in signal nonlinearity can be related to system nonlinearity and how...

Semi-active control systems are becoming more popular because they offer both the reliability of passive systems and the versatility of active control systems without imposing heavy power demands. In particular, it has been found that magnetorheological (MR) fluids can be designed to be very effective vibration control actuators, which use MR fluids to produce controllable damping force. The ob...

The main characteristics of the numerical methods for dynamic response analysis of single degree of freedom (SDOF) system in both frequency-domain and time-domain are briefly reviewed in this paper. Based on the uniform recursive formula, four methods (Central difference method, Newmark’s method, Ztransform method and Duhamel’s step integral method) are systematically studied. The advantages, d...

The paper examines the possibility of using a nonlinear Quasi-Zero-Stiffness (QZS) spring in vehicle suspension. response Single Degree Freedom (SDOF) model to harmonic base excitations is obtained which may be unstable and unbounded depending on excitation level damping ratio. This followed by obtaining SDOF with an amplitude that varying according road profile spectrum. Such dependency freque...

The ability of neuromuscular junctions in old animals to maintain tetanic output was tested in phasic and tonic limb muscles and the physiologic mechanism of maintenance was elucidated by analysis of the turnover of a false transmitter during prolonged tetani. Transmitter release during and after tetani was compared in limb muscles of young (8-9 month) and old (28-30 month) male CBF-1 mice. Amp...

In this paper we show that the ferrochelatase defect in erythropoietic protoporphyria (EPP) can readily be identified in mitogen-stimulated lymphocytes since such cells from patients with EPP accumulate approximately twice as much protoporphyrin IX as cells from normal subjects when incubated with a porphyrin precursor, gamma-aminolevulinic acid (ALA). Treatment of cultures with ALA and with th...

The modeling of abnormal behavior in 'normal' subjects (often animals) has a long history in pharmacological research for the screening of novel drug compounds. Systematic criteria have been outlined in that literature to estimate the external validity of a model, that is to estimate how closely the model is linked to the disorder of interest. Experimental psychopathology (EPP) also uses behavi...

Quantitative genetic analysis is often fundamental for understanding evolutionary processes in wild populations. Avian populations provide a model system due to the relative ease of inferring relatedness among individuals through observation. However, extra-pair paternity (EPP) creates erroneous links within the social pedigree. Previous work has suggested this causes minor underestimation of h...