Background: High-energy linear accelerator (linac) is a valuable tool and the most commonly device for external beam radiation treatments in cancer patients. In the linac head, high-energy photons with energies above the threshold of interaction produce photoneutrons. These photoneutrons deliver the extra dose to the patients in the planning treatment and increase the risk of secondary cancer.O...

We report the development and application of a microfluidic random access memory (RAM) that enables fully programmable formulation of an array of 95 nanolitre-scale reactions and subsequent random access to any reaction for addition of reagents or selective extraction of reaction products. This functionality is enabled by a novel droplet docking mechanism that exploits the physics of droplet fl...

in today’s competitive word, it is so important to offer a new way in the cycle of production and supply by which the maximum efficiency will be achieved. the problem of applying cross-docking operations in logistics and supply chain network design, as a new and applicable approach, has attracted much attention in both academic and industrial areas. the matter making this strategy be highly wel...

Background: The presence of accelerometers in smartphones has enabled low-cost balance assessment. Smartglasses, which contain an accelerometer similar to that of smartphones, could provide a safe and engaging platform for virtual and augmented reality balance rehabilitation; however, the validity of headmounted measurement of balance using smartglasses has not been investigated. Objective: To ...

During normal viewing of an object, a human observer will typically make small movements in the position of the head resulting in small parallax-related image changes. The significance of these changes is apparent when viewing a static stereographic display. Since the observer expects modifications in viewing direction that accompany side to side head movements, the lack of such changes in view...

Cummiskey, Brian R. MSME, Purdue University, May 2015. Characterization and Evaluation of Head Impact Sensors and Varsity Football Helmets. Major Professor: Eric A. Nauman, School of Mechanical Engineering. An increased understanding of the effects of brain injury in recent years has led to greater attention being given to the topic. A desire to investigate the causal agents of these injuries i...

This paper investigates and compares the effectiveness of haptic and audio modality for navigation in low visibility environment using a sensory augmentation device. A second generation head-mounted vibrotactile interface as a sensory augmentation prototype was developed to help users to navigate in such environments. In our experiment, a subject navigates along a wall relying on the haptic or ...

The Electronic Fox Ears helmet is a listening device that changes its wearer’s experience of hearing. A pair of headmounted, independently articulated parabolic microphones and built-in bone conduction transducers allow the wearer to sharply direct their attention to faraway sound sources. Joysticks in each hand control the orientations of the microphones, which are mounted on servo gimbals for...