in the last two decade the use of aerial laser scanner (als) or lidar (light detection and ranging) sensor in geomatics engineering and surveying application has augmented significantly . the main reason of the mentioned phenomenon is the reliability and accuracy of the data obtained by lidar sensors. the output of lidar is unclassified 3d point cloud. classification of the lidar point clouds i...

Recently, the ventilatory variation in pre-ejection period (ΔPEP) was found to be useful in the prediction of fluid-responsiveness of patients in shock. In the present study we investigated the behavior of the ventilation-induced variations in the systolic timing intervals in response to a graded hemorrhage protocol. The timing intervals studied included the ventilatory variation in ventricular...

The voiced speech waveform may be synthesized by exciting an LPC vocal tract filter with a pulse waveform patterned after naturally occurring glottal airflow pulses. Such a pulse waveform may be generated by computing samples of a piecewise polynomial curve at equally spaced time intervals. In this type of synthesis, the pitch period is commonly restricted to an integer multiple of the sample i...

Energy efficiency and safety are key issues to accurately stimulate neural tissues. A novel waveform has lately been proposed: the rising exponential waveform; nevertheless, no experimentation has been done using an active model of the membrane in order to validate these results. This paper proposes this analysis using several types of waveforms. The total power consumption, taking into conside...

BACKGROUND Lower extremity arterial disease (LEAD) is common and underdiagnosed in patients with diabetes mellitus and is associated with higher total mortality. METHODS We compared the accuracy of pulse oximetry, the ankle-brachial index (ABI), and the combination of the two to diagnose LEAD in consecutive outpatients with type 2 diabetes who had no symptoms of LEAD, in a primary care settin...

Diastolic heart failure with preserved systolic ejection fraction is becoming a major health burden and is responsible for 50% of heart failure hospital admissions. Arterial hypertension is one of the most important risk factors for diastolic dysfunction; however, systolic and diastolic blood pressures are the 2 extreme points of the arterial waveform. Arterial stiffness/elasticity derived from...

Diastolic heart failure with preserved systolic ejection fraction is becoming a major health burden and is responsible for 50% of heart failure hospital admissions. Arterial hypertension is one of the most important risk factors for diastolic dysfunction; however, systolic and diastolic blood pressures are the 2 extreme points of the arterial waveform. Arterial stiffness/elasticity derived from...

OBJECTIVE To test the hypothesis that components of heart period variability track autonomic function during simulated hemorrhage in humans. DESIGN Prospective experimental laboratory intervention. SETTING Human physiology laboratory. SUBJECTS A total of 33 healthy, nonsmoking, volunteer subjects (23 men, ten women). INTERVENTIONS Progressive lower body negative pressure was applied in ...

Diastolic heart failure with preserved systolic ejection fraction is becoming a major health burden and is responsible for 50% of heart failure hospital admissions. Arterial hypertension is one of the most important risk factors for diastolic dysfunction; however, systolic and diastolic blood pressures are the 2 extreme points of the arterial waveform. Arterial stiffness/elasticity derived from...