The takeaway Frenzel goggles: A Fresnel-based device

The takeaway Frenzel goggles

OBJECTIVE To develop and evaluate new thin and light glasses for the examination of patients with nystagmus and to compare them with Frenzel goggles. METHODS First, we designed new examination glasses: a Fresnel-based device with a short focal length that is not as heavy or bulky as Frenzel goggles. Second, visual-fixation suppression of postrotatory nystagmus with Frenzel goggles and the Fre...

MFDL: A Multicarrier Fresnel Penetration Model based Device-Free Localization System leveraging Commodity Wi-Fi Cards

Device-free localization plays an important role in many ubiquitous applications. Among the different technologies proposed, Wi-Fi based technology using commercial devices has attracted much attention due to its low cost, ease of deployment, and high potential for accurate localization. Existing solutions use either fingerprints that require labor-intensive radio-map survey and updates, or mod...

the significance of conjunction as a cohesive device in teaching writing

the research questions were as follows: 1. is there any relationship between the students concious awareness of the form and implications of the conjuncations and their improvement in using appropriate conjunctions? 2. does students knowledge of the from and the implications of the conjunctions help them to produce more coherent writings. 3. does a comparison between english conjunctions and th...

Fresnel tomography: a novel approach to the wave function reconstruction based on Fresnel representation of tomograms

New type of tomographic probability distribution which contains complete information on the density matrix (wave function) related to the Fresnel transform of the complex wave function is introduced. Relation to symplectic tomographic probability distribution is elucidated. Multimode generalization of the Fresnel tomography is presented. Examples of applications of the present approach are give...

Simulation of the Admittance Control Based Haptic Interface Device