background: considering differences in head size and shape of different equine breeds, biometric parameters can be an attribute to a particular race. objectives: the purpose of the present paper is to give a numerical definition of morphological characteristics of head region of the darehshori horse. methods: twenty mature darehshori horses were studied biometrically. the ear length, ears dista...

OBJECTIVES This study aims to assess possible wound complications of tympanoplasty and tympanomastoidectomy with or without postoperative mastoid dressing. PATIENTS AND METHODS A total of 37 patients (22 females, 15 males; mean age: 23.88 years; range 9 to 64 years) who underwent middle ear or mastoid operations via postauricular incision were included in this prospective, randomized, control...

1. The time of arrival of the wave front of a sound event at the ears, or more specifically, the difference in arrival times at the two different ears. A sound source anywhere on a line from due front, through due above to due back (the median plane) will have its wave front arrive at the two ears simultaneously. Move the source away from this line and one ear will begin to receive the wave fro...

the photoanthropometric method was used to study the facial features in 136 iranian children with down syndrome, aged 4 to 14 years. nineteen parameters were investigated and compared to an age related control group of 100 normal iranian children. the obtained measurements were related to reference values in the same faces. the normal range was defined by age related index values between the 20...

Russian roulette and splitting are widely used techniques to increase the efficiency of Monte Carlo estimators. But, despite their popularity, there is little work on how best apply them. Most existing approaches rely simple heuristics based on, e.g., surface albedo roughness. Their often hinges user-controlled parameters. We instead iteratively learn optimal factors during rendering, using a l...

The Ormia ochracea is able to locate a cricket's mating call despite the small distance between its ears compared with the wavelength. This phenomenon has been explained by the mechanical coupling between the ears. In this paper, it is first shown that the coupling enhances the differences in times of arrival and frequency responses of the ears to the incoming source signals. Then, the accuracy...

Introduction Observing the obliquity of stapes by closely scrutinizing the HRCT temporal bone in otosclerosis revealed a reliable and consistent finding. This finding can add to the existing radiological criteria in diagnosis of otosclerosis. Objective The objective of this study is to establish the obliquity of stapes in otosclerosis by radiological measurements using HRCT temporal bone by com...

OBJECTIVE Prominent ears are a common congenital deformity of the external ear, derived from a combination of defects in the antihelix and concha. The majority of cases are treated surgically, but one of major difficulties associated with otoplasty regards the achievement of lasting aesthetic results. With the present study we propose an effective combination of four surgical techniques of cart...