0011/2009 - M-Commerce e M-Business: um panorama da Computação Móvel e suas perspectivas

Este trabalho aborda um paradigma que vem crescendo nos últimos anos: a computação móvel. As transações comerciais na Internet (e-business) tendem cada vez mais para os dispositivos móveis (m-business), visto que estes equipamentos têm a capacidade de acessar informações em qualquer lugar e a qualquer momento. O ambiente corporativo também está ganhando produtividade em seus negócios eletrônicos (e-business) com a computação sem fio (m-business). Alguns estudiosos preferem dizer que o m-business é uma evolução do e-business, assim como o m-commerce é a evolução do e-commerce. É importante salientar que existem algumas particularidades nestes equipamentos, que devem ser levadas em consideração no desenvolvimento de projetos e que a usabilidade é uma necessidade absoluta, visto que seu mau uso pode implicar em sua rejeição. Para confirmar esta tendência, são citados também dados atuais de pesquisas de vários institutos, tornando óbvio que esta nova realidade está cada vez mais presente em nosso cotidiano

Web information search and sharing :

制度:新 ; 報告番号:甲2735号 ; 学位の種類:博士(人間科学) ; 授与年月日:2009/3/15 ; 早大学位記番号:新493

Issues in building mobile-aware applications with the Rover Toolkit

Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1996.Includes bibliographical references (p. 69-73).by Joshua A. Tauber.M.S

Mobile computing with the Rover Toolkit

Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1998.Includes bibliographical references (leaves 138-147).by Anthony Douglas Joseph.Ph.D

Re-thinking lifelogging : designing human-centric prosthetic memory devices.

Building Prosthetic Memory (PM) technology has been an active research area for the past few decades, with the primary aim in supporting Organic Memory (OM) in remembering everyday events and experiences. Through building and evaluating new PM tools, this thesis attempts to explore how and when PM tools are used to help OM in everyday memory tasks. The focus of this thesis is to investigate PM tools as an extension of, or a supplement to, OM and to understand why people choose to use PM as opposed to their OM to help them retrieve information. Further aims of this thesis are to investigate the role of Metamemory and social processes. Finally, the work aims to support Autobiographical memory through building new PM tools. The studies apply mixed experimental and naturalistic methods, and include 3 controlled lab studies and 3 field trials involving a total of 217 participants. Overall, there were 5 new PM devices built and evaluated in long-term and controlled contexts. Results obtained through lab studies suggest that PM and OM function in a synergetic relationship. In particular, use of PM increases when OM is particularly weak and this interaction is mediated by organic Metamemory processes. PM properties also have an influence - people prefer efficient over accurate PM devices. Furthermore, PM cues help in two ways: 1) at encoding to help focus OM; and 2) at retrieval to cue partially remembered information. Longer term studies also reveal that PM is not used to substitute for OM. Instead users prefer to use recordings to access specific parts of a lecture rather than listen to the whole thing. Such tools are extensively used by non-native speakers, although only native speakers' coursework benefits from usage. PM tools that support social summarisation demonstrate that people exploit social feedback and cues provided by other users and that these improve recall. IV Finally, evaluations of new autobiographical memory tools show that people upload mementos based on their importance. There is evidence for preference for mementos that are associated with other people and home. I conclude with a discussion of the design and theory implications of this work

User Interface Issues in Mobile Computing

The age of mobile computing with small portable computers is upon us. However, systems researchers continue to focus on transferring their workstation environments to these machines rather than studying what tasks more typical users wish to perform. Furthermore, we argue that even in the unlikely event that these tasks are the same as those performed by researchers on their workstations, desktop environments and applications may still be inappropriate for the wide range of mobile devices that will be marketed. To explore this area, we have built a mobile computing device along with a user interface system that attempts to address some of these issues. 1

User Interface Issues in Mobile Computing

The age of mobile computing with small portable computers is upon us. However, systems researchers continue to focus on transferring their workstation environments to these machines rather than studying what tasks more typical users wish to perform. Furthermore, we argue that even in the unlikely event that these tasks are the same as those performed by researchers on their workstations, desktop environments and applications may still be inappropriate for the wide range of mobile devices that will be marketed. To explore this area, we have built a mobile computing device along with a user interface system that attempts to address some of these issues. 1. Introduction While researchers have speculated on the advent of ubiquitous computing [18], mobile computing is already upon us. This new technology is becoming a reality mostly as a result of seemingly haphazard forces of the consumer marketplace and not of the careful plans of the research community. Mobile computing technology is e..