APCO Project 25 (“P25”) is a suite of wireless communications protocols used in the US and elsewhere for public safety two-way (voice) radio systems. The protocols include security options in which voice and data traffic can be cryptographically protected from eavesdropping. This paper analyzes the security of P25 systems against both passive and active adversaries. We found a number of protoco...

This article deals with the coexistence of two passive optical standards with video transmission using the CATV technology. The paper shows the cross coexistence of standards that are used for an analysis of critical parameters BER. The results of simulations define border parameters for data services in networks with the BER parameter. The designed model has proven that it is able to transfer ...

Background and Aim: Management of children’s behavior is fundamental to a successful and effective dental treatment for children. This study aimed to evaluate the perceptions of dental students towards behavior guidance techniques in pediatric dentistry. Materials and Methods: This cross-sectional study was carried out on dental students from three different levels of education. A questionnair...

Schwarz, S. 2018. Passive voices. be-, getand prepositional passives in recent American English. 67 pp. Uppsala: Department of English, Uppsala University. ISBN 978-91-506-2682-7. The aim of the thesis is to shed light on the use and development of passive voice in American English. Empirical, corpus methods are employed in order to examine the syntactic, semantic, and stylistic preferences of ...

researchers are of the belief that employee voice has favorable effects for both the employee and the organization. however, the effect of employee voice on creativity, and the process through which it influences creativity, has hitherto received little attention. this study aimed at investigating the relationship between perceived employee voice and creativity. employees of three premier dairy...

BACKGROUND Evidence suggests that hearing-aid users have difficulties with own-voice level control, most likely because their auditory feedback is affected by hearing-aid amplification. PURPOSE The purpose of this study was to investigate how changes to auditory feedback affect the voice level of hearing-aid users. RESEARCH DESIGN A correlational study was set up to investigate the relation...

providing a high-quality service for transmission and playing real-time voice conversations (voice streaming) over wireless ad-hoc networks is no mean feat. buffering together with adjusting the playout time of the packets is a receiver-side solution to overcome this challenge. in this paper, a new adaptive playout adjustment algorithm is proposed to stream the voice conversations over wireless...

it holds true that a flourishing fieldof contrastive rhetoric (cr) research has begun to address theway various text types and/or genres may differ across culturesand languages (corner, 1996).  very much in line withthis development, this study was an attempt to characterizethe linguistic structures of headlines in the sports section of 2 english newspapers: one non-iranian (the times) and one ...

objectives: nasality is one of the important parameters in pathology of voice resonance. voice of normal adults has nasality to some extent. it appears that nasality, like other parameters of voice, can be affected by loudness which can be measured in experimental evaluations. this study was conducted to determine the effect of vocal loudness on nasalance of vowels in normal adults and to ident...