The Behavioral Risk Factor Surveillance System (BRFSS) was originally conducted by using a landline telephone survey mode of data collection. To meet challenges of random-digit-dial (RDD) surveys and to ensure data quality and validity, BRFSS is integrating multiple modes of data collection to enhance validity. The survey of adults who use only cellular telephones is now conducted in parallel w...

The impact of cellular telephone use on driver performance was tested using an interactive driving simulator. While drivers followed a 15-mile route containing curves, obstacles and signs, they sent and received mobile calls and tuned a radio. Type of cellular telephone varied (i.e., manual dialing/ hand-held: memory dialing/hands-free; or voiceactivated/hand-held), as did cellular telephone mo...

Any system which contains some form of cryptographic authentication, conndentiality and/or identii-cation requires the provisioning of a secure key generation and distribution capability. The key distribution mechanism for wireless cellular systems, such as IS-95 CDMA, IS-136 TDMA and IS-91 Analog, has recently been investigated by the Telephone Industry Associ-ation's standards working groups....

Retinoids are synthetic and natural analogues of vitamin A that have various effects on cellular differentiation, cellular proliferation, immune system, and embryonic development. The present study reviews the history of systemic retinoids in medicine, the structure of syn

Objective(s): The use of antisense oligonucleotides (AOs) to restore normal splicing by blocking the recognition of aberrant splice sites by the spliceosome represents an innovative means of potentially controlling certain inherited disorders affected by aberrant splicing. Selection of the appropriate target site is essential in the success of an AO therapy. In this study, in search for a splic...

Cellular manufacturing system (CMS) is highly important in modern manufacturing methods. Given the ever increasing market competition in terms of time and cost of manufacturing, we need models to decrease the cost and time of manufacturing. In this study, CMS is considered in condition of dynamic demand in each period. The model is developed for facing dynamic demand that increases the cost of ...

This paper demonstrates the performance gap between speaker verification over land-line telephone networks and speaker verification over cellular networks. The paper shows that the cellular coding accounts for only a fraction of the observed performance gap. A dual-channel corpus, with speakers recorded simultaneously in a land-line phone and a cellular phone, is used to study the effect of the...

Neurobehavioral disorders are increasingly prevalent in children, however their etiology is not well understood. An association between prenatal cellular telephone use and hyperactivity in children has been postulated, yet the direct effects of radiofrequency radiation exposure on neurodevelopment remain unknown. Here we used a mouse model to demonstrate that in-utero radiofrequency exposure fr...

Cellular frequency reuse is known to be an efficient method to allow many wireless telephone subscribers to share the same frequency band. However, for wireless data and multi-media communications optimum cell layouts differ essentially from typical solutions for telephone systems. We argue that wireless radio systems for bursty message traffic preferably use the entire bandwidth in each cell. ...

Troubleshooting problems Moves, adds and changes to telephone equipment or service New service, voicemail, caller menus, special calling features and plans, caller ID, music on hold, international dialing Fax machines and codes, headsets [2], conference calls [3], speaker phone rental [4] Call accounting and billling Telephone bill login [5] We also manage plans, orders, service, billing and tr...