Transformers are the most critical and costly components in AC power systems. Insulation is weakest link transformers, design quality of a transformer's insulation system shall be confirmed by performingdielectric tests according to National or International standards. The impulse test more among dielectric tests, as it verifies integrity whole transformer. However, concluding result difficult ...

Introduction: Traditionally vestibular function has been assessed using caloric irrigations; new methods have failed to reach the same level of accuracy. Vestibular nerve dysfunction occurs with 'acoustic neuroma' or 'vestibular schwannoma. Quantitative testing of hearing by audiometry is much more widely available than quantitative vestibular testing, although consideration of vestibular dysfu...

Objectives: Video head impulse test (vHIT) can evaluate function of the vestibuloocular reflex for high frequency range rotation. We aimed to characterize abnormal patterns canal dysfunction by vHIT in vestibular migraine (VM) and relationship between presence symptomatic improvement.Methods: Eighty-seven patients with VM were included. Abnormality at initial examination was determined gain deg...

Abstract In order to explore the intracranial pressure response under different sensor fixation modes, experimental study on measurement based physical head surrogate shock wave is carried out. The influence of methods was analyzed. results show that mode has little test results. deviation between peak and impulse only 3.62% 4.54% in two modes hot melt supporting free suspension. value metal su...

Many spatial audio (“3D sound”) systems are based on the use of Head-Related Transfer Functions (HRTFs). Since the measurement of these HRTFs for each prospective listener is impractical in many applications, developers frequently use “generic” HRTFs (e.g., from a mannequin), sacrificing the superior spatialization that could be provided by “individual” HRTFs. This paper presents an improved me...

OBJECTIVES/HYPOTHESIS To evaluate the vestibulo-ocular reflex and its relationship with subjective balance in a long-term follow-up after vestibular schwannoma surgery. STUDY DESIGN Retrospective cohorts study in a tertiary referral hospital. Forty-nine consecutive patients on which vestibular schwannoma surgery was performed at least 1 year before. METHODS Patients are classified in accord...