Magnetic resonance imaging (BARI) is used to map the distribution and dynamics of nuclei such as hydrogen. Imaging can be adapted to shalw blood in contrast to the surrounding sationary tissues. This application of MRI referred to as MR angiography @IRA) has become widely used in cardiovascular assessment beciiuse of its sensitivity to disease states and lack of ionising radiation or iodinated ...

The realization of general aviation Free Flight requires advanced cockpit systems to assist pilots in managing information and decision-making. In this paper, the application of cognitive engineering concepts to cockpit system design for general aviation is discussed. The design of an Aircraft Approach and Landing Assistant is presented as an example of this method. Its purpose is to enhance pi...

a time-of-flight mass spectrometer (tof-ms) developed in our laboratory at isfahan university of technology is described here. the tof-ms instrument uses laser as the ionization source which provides an opportunity to investigate the ions formed in laser ablation or desorption. the tof-ms has an ionization chamber containing an accelerator and an ion lens to focus the ions into a one meter line...

A method is presented for the stress analysis of flight vehicles under different flight conditions including gust and control surface deflection (or maneuver) using the governing equations of rigid-body motions and elastic deformations. The Lagrangian approach is used to derive the governing equations of motions. For this purpose, the basic equations of motions are derived in terms of potential...

Behavioral performance, subjective assessment based on NASA Task Load Index (NASA-TLX), as well as physiological measures indexed by electrocardiograph (ECG), event-related potential (ERP), and eye tracking data were used to assess the mental workload (MW) related to flight tasks. Flight simulation tasks were carried out by 12 healthy participants under different MW conditions. The MW condition...

against the range-dependent accuracy of the tracking radar measurements including range, elevation and bearing angles, a new hybrid adaptive kalman filter is proposed to enhance the performance of the radar aided strapdown inertial navigation system (ins/radar). this filter involves the concept of residual-based adaptive estimation and adaptive fading kalman filter and tunes dynamically the fil...

A method for automatically calculating the flight kinematics of a flapping bird flying on a relatively dense background environment was developed. The algorithm is able to calculate the bird’s flapping frequency, wingbeat phase, forward velocity, and forward acceleration with good accuracy with the use of only one camera. Image processing was used for extracting the bird’s silhouette from the b...

The fruit fly Drosophila melanogaster relies on feedback from multiple sensory modalities to control flight maneuvers. Two sensory organs, the compound eyes and mechanosensory hindwings called halteres, are capable of encoding angular velocity of the body during flight. Although motor reflexes driven by the two modalities have been studied individually, little is known about how the two sensory...