The prediction of received power in the adjacent zone of a Dedicated Short Range Communications (DSRC) system operating inside an arched transportation tunnel is discussed. Wideband directional channel sounding was conducted inside the tunnel, and the gain, angleof-arrival and delay of each propagation path were estimated from the measured data. By simulating application antennas according to t...

BACKGROUND There are several clinical and radiological methods available to classify foot posture in research, however there is no clear strategy for selecting the most appropriate measurements. Therefore, the aim of this study was to develop a foot screening protocol to distinguish between participants with normal- and flat-arched feet who would then subsequently be recruited into a series of ...

Conventional wisdom among cave divers is that submerged caves in aquifers, such as in Florida or the Yucatan, are unstable due to their ever-growing size from limestone dissolution in water. Cave divers occasionally noted partial cave collapses occurring while they were in the cave, attributing this to their unintentional (and frowned upon) physical contact with the cave walls or the aforementi...

Background Various foot orthoses have been shown to alter tibialis anterior and peroneus longus electromyographic (EMG) muscle activity during walking. However, it is unclear whether these changes represent optimisation in muscle function. Therefore, two studies were conducted to determine; (i) whether people with flat-arched feet display altered muscle activity compared to those with normal-ar...

Endoscopic anterior cruciate ligament (ACL) reconstruction can be performed through one-incision or two-incision technique. The current one-incision endoscopic ACL single bundle reconstruction techniques attempt to perform an isometric repair placing the graft along the roof of the intercondylar notch, anterior and superior to the native ACL insertion. However the ACL isometry is a theoretical ...

Freestanding high tunnels are cost-effective, plastic film-covered growing structures that use very little to no modern environmental control technology. Natural ventilation is used temperature and humidity. Typically, openings created along the sides by manually rolling up a section of film cover. While common on greenhouses, roof vents not typically part tunnel designs in United States. This ...

During the mining process of fully-mechanized caving faces, roof roadway behind working face easily forms an arched-shape hanging structure with pushed forward, which results in potential hazards such as gas accumulation and large-scale collapse. Based on actual situation a at difficult end top coal through borehole exploration, surrounding rock displacement observation, bolt stress monitoring,...

tunnel syndrome, the second most common compression neuropathy of the upper extremity. Patients often present with pain, paresthesias and/or weakness that if left untreated may lead to significant disability. This article reviews the etiology, diagnosis and management of cubital tunnel syndrome. The ulnar nerve originates from branches of the C8 and T1 spinal nerve roots and is the terminal bra...