The impact of the video cassette recorder on media use within families of urban dwellers

VCR ownership is growing at a fast pace in the US, yet little is known about its impact upon the family. The impact of the VCR may be analyzed in terms of three interrelated aspects of family life, decision making, normative development and media choices. Believing that VCR\u27s impact upon the family might vary according to status, role, sex, age and education of its members, a random telephone survey of parents and children in the City of Ames, Iowa, was designed to measure the differences of parent and child perceptions and their agreement of disagreement about the impact of the VCR upon family decisions, rules and choices. The resulting data were treated in four ways: firstly, a global view of parent\u27s and children\u27s perceptions was obtained through summary statistics; secondly, variables were crosstabulated, controlling for status, sex and grade in order to make comparisons between classes; thirdly, paired parent/child responses were crosstabulated to determine how much agreement there was in families; fourthly, associations between decision making, normative development and media choice variables were tested. Relationships between parents\u27 and childrens\u27 perceptions were tested by means of Pearson correlation coefficients and the Lambda statistic; agreement between parent/child pairs was tested by means of Scheaffer\u27s confidence interval formula and Dale\u27s agreement scale. Associations between decision making, normative development and media choice variable were tested with Pearson correlations, chi-square tests and the gamma statistic. Analysis shows that parents\u27 and childrens\u27 perceptions are often polarized and vary according to different aspects of decision making, normative development and media choices within the family. Agreement between paired parents and children also varies in strength according to decisions, rules and choices. What similarities and agreements there are, are most evident in media choices but less so in decision making and normative development. Though many families have developed norms of television use, the use of the VCR is either subsumed under them or free of regulation in most families. Analysis of data outlined above has been strongly influenced by the insights of coorientation and convergence theory. Perspectives of exchange theory and field theory have been used to discuss the implications of the research findings

Human factors in instructional augmented reality for intravehicular spaceflight activities and How gravity influences the setup of interfaces operated by direct object selection

In human spaceflight, advanced user interfaces are becoming an interesting mean to facilitate human-machine interaction, enhancing and guaranteeing the sequences of intravehicular space operations. The efforts made to ease such operations have shown strong interests in novel human-computer interaction like Augmented Reality (AR). The work presented in this thesis is directed towards a user-driven design for AR-assisted space operations, iteratively solving issues arisen from the problem space, which also includes the consideration of the effect of altered gravity on handling such interfaces.Auch in der bemannten Raumfahrt steigt das Interesse an neuartigen Benutzerschnittstellen, um nicht nur die Mensch-Maschine-Interaktion effektiver zu gestalten, sondern auch um einen korrekten Arbeitsablauf sicherzustellen. In der Vergangenheit wurden wiederholt Anstrengungen unternommen, Innenbordarbeiten mit Hilfe von Augmented Reality (AR) zu erleichtern. Diese Arbeit konzentriert sich auf einen nutzerorientierten AR-Ansatz, welcher zum Ziel hat, die Probleme schrittweise in einem iterativen Designprozess zu lösen. Dies erfordert auch die Berücksichtigung veränderter Schwerkraftbedingungen

Technology 2002: The Third National Technology Transfer Conference and Exposition, volume 2

Proceedings from symposia of the Technology 2002 Conference and Exposition, December 1-3, 1992, Baltimore, MD. Volume 2 features 60 papers presented during 30 concurrent sessions

Twentieth Annual Conference on Manual Control, Volume 1

The 48 papers presented were devoted to humanopeator modeling, application of models to simulation and operational environments, aircraft handling qualities, teleopertors, fault diagnosis, and biodynamics

Policies, methods and tools for visitor management proceedings of the second International Conference on Monitoring and Management of Visitor Flows in Recreational and Protected Areas, June 16 20, 2004, Rovaniemi, Finland

The second International Conference on Monitoring and Management of Visitor Flows in recreational and protected areas (MMV 2) -conference provided a forum for research presentations and for exchange of information and experience of managerial policies, problems, practices and solutions regarding issues related to monitoring and management of visitor flows in recreational and protected areas. These proceedings cover ten research topics, which were chosen to reflect current on-going research work internationally in the field of visitor monitoring and management. Monitoring visitor flows and also other types of recreational inventories are discussed in 16 articles and four posters on visitor monitoring methods, experiences of national, regional and on-site visitor inventories and visitor flow modeling and data management. Nineteen papers and three posters are discussing visitor management research from several perspectives. Articles related to issues of visitor conflicts, implementation of visitor information in management processes, different aspects of sustainability and carrying capacity issues in recreational settings make the largest group of papers. The third major subject group of articles (16) deal with visitor management policy issues, and nature tourism policies in recreational and protected areas. The last topics include economic and social impacts of recreation and nature tourism in the surroundings communities, regions and countries

Aeronautical engineering: A continuing bibliography with indexes (supplement 258)

This bibliography lists 536 reports, articles, and other documents introduced into the NASA scientific and technical information system in October 1990. Subject coverage includes: design, construction and testing of aircraft and aircraft engines; aircraft components, equipment and systems; ground support systems; and theoretical and applied aspects of aerodynamics and general fluid dynamics

Proceedings of the NASA Conference on Space Telerobotics, volume 3

The theme of the Conference was man-machine collaboration in space. The Conference provided a forum for researchers and engineers to exchange ideas on the research and development required for application of telerobotics technology to the space systems planned for the 1990s and beyond. The Conference: (1) provided a view of current NASA telerobotic research and development; (2) stimulated technical exchange on man-machine systems, manipulator control, machine sensing, machine intelligence, concurrent computation, and system architectures; and (3) identified important unsolved problems of current interest which can be dealt with by future research