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At least 163 records · Page 9Linked to original sources
PubMed1993

Teleconferencing for cost-effective sharing of radiology educational resources: potential and technical development.

To develop a cost-effective method of sharing educational resources, a dial-up teleconferencing network was implemented between three radiologic sites for a 30-day period of evaluation. By means of standard dial-up telephone channels, compressed video and audio signals displayed radiologic images, slides, and text, allowing residents and faculty from the three sites to participate in sight and sound interactions. Each of the three sites used compressed video/audio coder-decoders (codecs) conforming to the Consultative Committee on International Telegraphy and Telephony H.261 standard. Four video cameras were used at each site, and the audio was run in full duplex mode. A multipoint video bridge was used to broadcast codec output signals to the input lines of the other codecs. Our evaluation found audio quality to be suboptimal, but capable of being improved; diagnostic image quality was adequate when a video zoom mode was used; the digital-archive mode of the codec proved advantageous; the H.261 codec permitted participation from all sites; and all conference lecturers were able to conduct their conferences as they were accustomed. Although audio quality and spatial resolution need to be improved, the results of this pilot study imply that dial-up compressed video conferencing has the potential to become a practical, cost-effective method of sharing educational resources by means of interactive radiologic multisite educational programs.

Computer Communication Networks↗
PubMed1993

Fertility awareness as a component of sexuality education. Preliminary research findings with adolescents.

Fertility awareness refers to the observation and interpretation of cervical mucus, often called vaginal discharge. A woman's cervical-mucus pattern indicates the time of ovulation and differentiates the fertile and infertile phases of the menstrual cycle from each other. Fertility awareness enables a woman to know when pregnancy can and cannot occur on a daily basis during each menstrual cycle. There has been, to date, almost no exploration of the appropriateness of fertility-awareness instruction for adolescents. A review of the literature on adolescent cognitive development, sexual activity, knowledge of fertility and contraceptive risk-taking behavior is presented. Based on the literature review, a theoretical rationale for fertility-awareness instruction as a unique sex-education curriculum for adolescents is proposed. The content and teaching techniques of a fertility-awareness presentation for teenagers is described. Directions for future research in fertility-awareness instruction for teenagers, and the need for long-term follow-up to assess the effects of such education on teenagers' sexual activity and contraceptive use are discussed.

Adolescent↗