			Home About us Contact

Phone System (phone + system)

Distribution by Scientific Domains

Medical Sciences	50%

Selected Abstracts

"I Am Not Alone": The Feasibility and Acceptability of Interactive Voice Response-Facilitated Telephone Peer Support Among Older Adults With Heart Failure

CONGESTIVE HEART FAILURE, Issue 3 2007
Michele Heisler MD
Patient self-management is a critical determinant of heart failure (HF) outcomes, yet patients with HF are often frail and socially isolated, factors that may limit their ability to manage self-care and access clinic-based services. Mobilizing peer support among HF patients is a promising strategy to improve self-management support. In this pilot, the authors evaluated the feasibility and acceptability of an interactive voice response (IVR)-based platform to facilitate telephone peer support among older adults with HF. Participants completed a baseline survey, were offered a 3-hour training session in peer communication skills, and were paired with another patient who had HF. Participants were asked to contact their partner weekly using a toll-free IVR phone system that protected their anonymity and provided automated reminders if contacts were not made. Times and duration of participants' telephone contacts were monitored and recorded. After the 7-week intervention, participants completed surveys and brief face-to-face interviews. The authors found high levels of use and satisfaction and improvements in depressive symptoms among the 20 pilot study participants. An IVR peer-support intervention is feasible, is acceptable to patients, and may have positive effects on patients' HF social support and health outcomes, in conjunction with structured health system support, that warrant more rigorous evaluation in a randomized trial. [source]

TK-AKA: using temporary key on Authentication and Key Agreement protocol on UMTS

INTERNATIONAL JOURNAL OF NETWORK MANAGEMENT, Issue 4 2009
Hsia-Hung Ou
Mobile communication is definitely one of the major high-technology applications that offer present-day people a modern life of appropriate convenience. In recent years, the third-generation cell phone system has approached maturity. The Universal Mobile Telecommunication System (UMTS) is currently the most widely used system around the world. The Third Generation Partnership Project is equipped with the Authentication and Key Agreement (AKA) protocol to maintain secrecy and security both during the authentication process and during the telecommunication session through UMTS. However, Hung and Li have pointed out that the UMTS-AKA protocol has three problems, involving bandwidth consumption, space overhead and synchronization of the sequence number, which are yet to be resolved. In addition, they have proposed an extension of the UMTS-AKA protocol, named the X-AKA protocol, to overcome these obstacles. Nevertheless, the X-AKA protocol too appears to have problems of its own. In this article, the weaknesses of X-AKA are enumerated. In addition, a more practical AKA protocol for UMTS is presented. The new protocol, based on the same framework as its predecessor, proves to be more efficient and practical, satisfying the requirements of modern living. Copyright © 2008 John Wiley & Sons, Ltd. [source]

Evaluation of cognitively accessible software to increase independent access to cellphone technology for people with intellectual disability

JOURNAL OF INTELLECTUAL DISABILITY RESEARCH, Issue 12 2008
S. E. Stock
Abstract Background There are over two billion telephones in use worldwide. Yet, for millions of Americans with intellectual disabilities (ID), access to the benefits of cellphone technology is limited because of deficits in literacy, numerical comprehension, the proliferation of features and shrinking size of cellphone hardware and user interfaces. Developments in smart phone technology and PDA-based cellphones provide an opportunity to make the social and safety benefits of cellphones more independently accessible to this population. Method This project involved employment of universal design and other specialised software development methods to create a multimedia cellphone interface prototype which was compared with a typical mainstream cellphone in a usability evaluation for individuals with ID. Participants completed a structured set of incoming/outgoing phone tasks using both the experimental and control conditions. Usability measurements included the amount of assistance needed and errors made in completing the cellphone use sequence. Results A total of 22 individuals with ID participated in the research by engaging in a series of incoming and outgoing cellphone calls using both the multimedia cellphone prototype system and a mainstream Nokia 6360 cellphone. Test subjects required significantly less help (P = 0.001) and made significantly fewer errors (P < 0.001) when completing eight calls using the specialised multimedia phone system as compared with the mainstream phone. Conclusions The statistical evidence of both usability results provide promising evidence of the feasibility of implementing universal design and other specialised software development methodologies for increasing independent access to the benefits of cellphone technologies for students and adults with ID. Issues related to designing cognitively accessible interfaces, study limitations and future directions are discussed. [source]

Effects of W-CDMA 1950,MHz EMF emitted by mobile phones on regional cerebral blood flow in humans

BIOELECTROMAGNETICS, Issue 7 2009
Yoko Mizuno
Abstract Use of the third generation mobile phone system is increasing worldwide. This is the first study to investigate the effects of the third generation system on regional cerebral blood flow (rCBF) in humans. We compared effects of the electromagnetic field (EMF) emitted from the Wideband Code Division Multiple Access (W-CDMA) cellular system versus sham control exposure on rCBF in humans. Nine healthy male volunteers participated in this study. Positron emission tomography (PET) scans were obtained before, during, and after unilateral 30,min EMF exposure. The subtraction analysis revealed no significant rCBF changes caused by the EMF conditions compared with the sham exposure, suggesting that EMF emitted by a third generation mobile phone does not affect rCBF in humans. Bioelectromagnetics 30:536,544, 2009. © 2009 Wiley-Liss, Inc. [source]