A device-interaction model for users with special needs

Multimedia Tools and Applications - Interaction is a fundamental part of using any computer system but it is still an issue for people with special needs. In order to improve this situation, this...     

Navigation methods of special needs users in multimedia systems

In today’s information society, computer users frequently need to seek for information on home pages as well as to select among software functions. A well-designed interface is essential in order to find everything necessary and meet the requirements of both the average user and users with special needs. Proper placement of objects on the screen is important to decrease perception time. One of the well-known researchers of web ergonomics, Jakob Nielsen (2006) established in an eye-tracking experiment that users scan displayed homepages in an F shape. In the present project the task was to find similar shapes in a number of playful visual search games. Several multimedia tasks were developed for this investigation. Our experiments included normal users and users with intellectual disabilities. We tested whether the characteristic searching routes and navigation methods differed between normal users and those with intellectual disabilities. The results of this investigation can inform the design and position of graphical user interface elements.     

Understanding user interface needs of e-commerce web sites

With the growth in the number of web sites, users must choose among many alternative web sites and designers must face the challenge of keeping the user's duration. Web site design is an iterative process of fine-tuning to enhance user satisfaction. According to the hygiene–motivation theory, the emotions of satisfaction and dissatisfaction are caused by two different categories of characteristics. Lack of dissatisfaction does not mean satisfaction, and lack of satisfaction does not mean dissatisfaction. This study proposes a parsimonious and effective multidimensional evaluation tool: a max–min approach to combine the hygiene–motivation factors and thereby provide a strategy to compare the competitive position of different web sites. The interfaces of eight e-retailer web sites for computer and communication products were targeted for evaluation. Four hygiene factors (navigation, information display, ease of learning and response time) and five motivation factors (interaction with people, screen complexity, user empowerment, visual appearance and achievement) are measured. The evaluations on hygiene and motivation factors were transformed into max and min effectiveness scores using the proposed models. Three zones (zone of intolerance, zone of efficiency and zone of satisfaction) were described to illustrate the role of strategic planning of a site interface in shaping a competitive position among the observed web sites.     

End users as co-designers of their own tools and products

In our Age of exponential technological advance, recent developments are determining an evolution of end users from passive information consumers into information producers. Users are increasingly willing and, indeed, determined to shape the software they use to tailor it to their own needs. Based on a brief review of research activities we performed in the last decade, this paper analyzes some challenges that software designers face to comply with the new roles of end users in the software life cycle, and discusses how to provide end users with software environments that empower them to become co-designers of their own tools and products. The examples reported in the paper show why and how end users are involved in design activities in various application domains.     

Training as regulation and development: An exploration of the needs of enterprise systems users

The view of the organization as a system that ‘processes’ information or ‘solves’ problems is at odds with the dynamics of change associated with the development and use of IS in an organization. A significant consequence of this mismatch is in training that does not meet the needs of either the user or management communities, giving rise to sub optimal organization performance and inertia. We explored such issues by examining recent research into organizational development and training. The particular challenges presented in the development and implementation of large-scale enterprise systems were explored to reveal a discontinuity in the constructs underpinning a development. A theoretic model that bridged some of the gaps between the bodies of research was developed and a brief empirical study provided a proof of concept for the model. The paper concludes with a discussion of the model's implications for theory and practice.     

Understanding the behavior changes in belief and attitude among experienced and inexperienced learning object users

Prior empirical studies in the implementation of general information technologies (IT) have revealed that IT adoption and usage were determined by user beliefs and attitudes. However, little is known about how user beliefs and attitudes form and change over time. To address these issues, this paper reports a study of 481 inexperienced and 120 experienced potential users on learning objects. Technology acceptance model’s constructs were used to conduct a longitudinal study across three phases (introduction, training and direct-use experience) to examine the formation and the changes in users’ beliefs and behavioral intention to use learning objects over time. The results showed that the rates of changes in users’ beliefs and behavioral intention toward learning objects usage were time-variant and were more predominant during the early stage (introduction to training) of learning objects usage than in the later stages (training to direct-use experience). The study confirmed that initial exposure through introduction and training was effective in improving inexperienced users’ beliefs and intentions to use learning objects. It also helped to reduce the belief and intention gaps that existed between experienced and inexperienced users. In addition, the influence of initial introduction and training on users’ beliefs and perceptions was sustained over time, thus further indicating their importance.     

Design for the elderly: user-based evaluation studies involving elderly users with special needs

Although a considerable amount is known about the ageing process, very little is known about the consumer needs of elderly people with special needs. On the whole a large proportion make do with 'ordinary' products to the best of their ability. The Special Needs Research Unit's extensive experience of evaluating such products highlights the fact the access to domestic appliances can be enhanced if attention is paid to basic human factors issues at the drawing-board stage. For manufacturers it is potentially the most effective means of enlarging their markets. A user-based evaluation strategy is described centering on two well-known products. It is suggested that paying attention to specific features in the early stages of design would result in better products for all.     

Understanding post-adoption behaviors of e-service users in the context of online travel services

We developed a model to investigate the factors influencing two different post-adoption behaviors of e-service users based on the Post-Acceptance Model of IS Continuance (IS continuance model): (1) continuance intention to use e-services; and (2) Word of Mouth (WOM) behavior. We tested the research model using a survey of 543 usable responses in China. Our findings show that satisfaction and perceived usefulness positively affect continuance intention, which, together with perceived usefulness, positively influences the WOM behavior. The two different post-adoption behaviors of e-service users, continuance intention and WOM, are closely related. Implications for theory and practice are also discussed.     

Smart homes and their users: a systematic analysis and key challenges

Published research on smart homes and their users is growing exponentially, yet a clear understanding of who these users are and how they might use smart home technologies is missing from a field being overwhelmingly pushed by technology developers. Through a systematic analysis of peer-reviewed literature on smart homes and their users, this paper takes stock of the dominant research themes and the linkages and disconnects between them. Key findings within each of nine themes are analysed, grouped into three: (1) views of the smart home—functional, instrumental, socio-technical; (2) users and the use of the smart home—prospective users, interactions and decisions, using technologies in the home; and (3) challenges for realising the smart home—hardware and software, design, domestication. These themes are integrated into an organising framework for future research that identifies the presence or absence of cross-cutting relationships between different understandings of smart homes and their users. The usefulness of the organising framework is illustrated in relation to two major concerns—privacy and control—that have been narrowly interpreted to date, precluding deeper insights and potential solutions. Future research on smart homes and their users can benefit by exploring and developing cross-cutting relationships between the research themes identified.     

Involving users early on in the design process: closing the gap between mobile information services and their users

Designing mobile information services, including mobile Internet services, mobile banking, interactive mobile television, location-based services etc. that capture a mass market has not been easy, and there have been many disappointments over the past years. There are still uncertainties with regard to the kinds of mobile services users want and need. We argue that users wants and needs depend on their context, which means that users should play an important role in the design process of mobile information services, through a structured approach in which developers and users work together. In this paper, we present a group-based approach to include the user early on in the design process in an efficient way. We have applied the group-based approach in three cases, i.e. mobile services for campus visitors, wireless applications for the process industry and services for crisis management. In all cases, involving users early on in the design process enabled the developers to gather useful information for designing mobile information services.     

Extroversion,neuroticism and self-concept: their impact on internet users in India

The aim of this study was to find out the influence of personality structure of an individual, i.e., extroversion, neuroticism and self-concept on the usage of the Internet in India. Further, it was also aimed to find out the correlation between the three above-mentioned variables in the light of Internet usage. Exploratory research design was used in this study and the tools used were: Eysenck Personality Inventory and Mohsin Self-Concept Inventory. The Internet was the medium for data collection and individuals were invited by e-mail to participate in the study. The method of random sampling was used for selecting the sample size of 200. In this study, Internet users were classified as heavy or light users based on the number of hours spent online. While we found no significant difference between heavy and light users of Internet on extroversion and neuroticism, it was found that the heavy users scored high on self-concept.     

Understanding why users tag: A survey of tagging motivation literature and results from an empirical study

While recent progress has been achieved in understanding the structure and dynamics of social tagging systems, we know little about the underlying user motivations for tagging, and how they influence resulting folksonomies and tags. This paper addresses three issues related to this question. (1) What distinctions of user motivations are identified by previous research, and in what ways are the motivations of users amenable to quantitative analysis? (2) To what extent does tagging motivation vary across different social tagging systems? (3) How does variability in user motivation influence resulting tags and folksonomies? In this paper, we present measures to detect whether a tagger is primarily motivated by categorizing or describing resources, and apply these measures to datasets from seven different tagging systems. Our results show that (a) users’ motivation for tagging varies not only across, but also within tagging systems, and that (b) tag agreement among users who are motivated by categorizing resources is significantly lower than among users who are motivated by describing resources. Our findings are relevant for (1) the development of tag-based user interfaces, (2) the analysis of tag semantics and (3) the design of search algorithms for social tagging systems.     

Understanding why users tag: A survey of tagging motivation literature and results from an empirical study

While recent progress has been achieved in understanding the structure and dynamics of social tagging systems, we know little about the underlying user motivations for tagging, and how they influence resulting folksonomies and tags. This paper addresses three issues related to this question. (1) What distinctions of user motivations are identified by previous research, and in what ways are the motivations of users amenable to quantitative analysis? (2) To what extent does tagging motivation vary across different social tagging systems? (3) How does variability in user motivation influence resulting tags and folksonomies? In this paper, we present measures to detect whether a tagger is primarily motivated by categorizing or describing resources, and apply these measures to datasets from seven different tagging systems. Our results show that (a) users’ motivation for tagging varies not only across, but also within tagging systems, and that (b) tag agreement among users who are motivated by categorizing resources is significantly lower than among users who are motivated by describing resources. Our findings are relevant for (1) the development of tag-based user interfaces, (2) the analysis of tag semantics and (3) the design of search algorithms for social tagging systems.     

Understanding the spread of malicious mobile-phone programs and their damage potential

The fast growing market for smart phones coupled with their almost constant on-line presence makes these devices the new targets of malicious code (virus) writers. To aggravate the issue, the security level of these devices is far below the state-of-the art of what is used in personal computers. It has been recently found that the topological spread of multimedia message service (MMS) viruses is highly restricted by the underlying fragmentation of the call graph—the term topological here refers to the explicit use of the call graph topology to find vulnerable phones. In this paper, we study MMS viruses under another type of spreading behavior that locates vulnerable phones by generating a random list of numbers to be contacted, generally referred to as scanning. We find that hybrid MMS viruses including some level of scanning are more dangerous to the mobile community than their standard topological counterparts. Interestingly, this paper shows that the topological and scanning behaviors of MMS viruses can be more damaging in high and low market share cases, respectively. The results also show that given sufficient time, sophisticated viruses may infect a large fraction of susceptible phones without being detected. Fortunately, with the improvement of phone providers’ monitoring ability and the timely installations of patches on infected phones, one can contain the spread of MMS viruses. Our findings lead to a better understanding on how one could prevent the spread of mobile-phone viruses even in light of new behaviors such as scanning.     

Understanding of website usability: Specifying and measuring constructs and their relationships

Developing a usable website is pivotal for e-business success. Researchers have devoted effort to develop metrics, guidelines and theories of website usability, yet there still is a lack of consensus on the multifaceted dimensions of website usability and lack of investigation of the nomological networks among website usability constructs. This study first investigated the common dimensions of website usability by integrating the findings of previous studies and a focus group study with website usability experts. Instruments to measure the constructs were developed and empirically validated. Then nomological networks between website usability constructs and between those constructs and online purchase intention and purchase were examined. Three field studies including two questionnaire surveys and a causal mapping analysis were conducted. The research identified ten website usability constructs with strong psychometric properties. A number of nomological networks between usability constructs were discovered, contributing to identification of sources of variances of purchase intention and purchase behavior. Findings of this study are expected to provide useful insights for practitioners to develop more usable websites and for researchers to better assess the effect of website usability on online customer behavior.     

Flow on the net–detecting Web users’ positive affects and their flow states

The correlations between positive affects and flow symptoms on the Web are analyzed in an attempt to increase our understanding of the positive aspects of Web users’ on-line behaviors. The digital version of the experience sampling method was employed to collect situated data from 233 Web users with a pop-up questionnaire on subjects’ Web browsers. This study concludes: (1) Web users are more likely to experience positive moods on the Web; (2) positivity of affects and enjoyable feelings are consequences of flow; (3) three factors underlying Web users’ flow experiences labeled as antecedents, experiences, and consequences represent the process that an individual could experience during his/her engagement on the Web. Findings in this study provide insights into Web users’ internal behaviors and the process of approaching optimal flow experience. In addition, the on-line experience sampling method was proven to be a useful and practical data collection tool.     

Impact of similarity between avatar and their users on their perceived identifiability: Evidence from virtual teams in Second Life platform

Research on the application of avatars in the virtual teams is growing. In this study, we examined the effect of perceived similarity of an avatar user with his/her avatar on the perceptions of his/her identifiability within a virtual team. The study utilized a sample of 124 users actively involved in Second Life, a virtual world platform. Results of structural equation modeling utilizing the partial least squares method corroborate the hypothesis. An important contribution of this research is to inform practitioners about the critical role that users’ similarity with the avatar plays in enhancing their identifiability. We draw conclusions based on the result and identify some important avenues for future research.