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CHINZ Tables of Contents: 05060708091011121315

Proceedings of CHINZ'07, the ACM SIGCHI New Zealand Chapter's International Conference on Computer-Human Interaction

Fullname:Proceedings of the 8th ACM SIGCHI New Zealand Chapter's International Conference on Computer-Human Interaction
Editors:Mark Apperley
Location:Hamilton, New Zealand
Dates:2007-Jul-02 to 2007-Jul-04
Publisher:ACM
Standard No:ISBN 1-59593-836-2; 978-1-59593-836-7; ACM DL: Table of Contents hcibib: CHINZ07
Papers:11
Pages:79
Links:Conference Home Page
Making paperless work BIBAFull-Text 1-8
  Beryl Plimmer; Mark Apperley
Despite well documented advantages, attempts to go truly "paperless" seldom succeed. This is principally because computer-based paperless systems typically do not support all of the affordances of paper, nor the work process that have evolved with paper-based systems. We suggest that attention to users' work environments, activities and practices are critical to the success of paperless systems. This paper describes the development and effective utilization of a software tool for the paperless marking of student assignments which does not require users to compromise on established best practice. It includes a significant advance in the task management support.
Using a mobile phone for 6 DOF mesh editing BIBAFull-Text 9-16
  Anders Henrysson; Mark Billinghurst
This paper describes how a mobile phone can be used as a six degree of freedom interaction device for 3D mesh editing. Using a video see-through Augmented Reality approach, the mobile phone meets several design guidelines for a natural, easy to learn, 3D human computer interaction device. We have developed a system that allows a user to select one or more vertices in an arbitrary sized polygon mesh and freely translate and rotate them by translating and rotating the device itself. The mesh is registered in 3D and viewed through the device and hence the system provides a unified perception-action space. We present the implementation details and discuss the possible advantages and disadvantages of this approach.
Evaluation of spatial abilities through tabletop AR BIBAFull-Text 17-24
  Moffat Mathews; Madan Challa; Cheng-Tse Chu; Gu Jian; Hartmut Seichter; Raphael Grasset
Research has been done into improving the means by which we organise and manage information. The usefulness of 2D versus 3D interfaces and environments has also been debated and evaluated. Human spatial abilities can be used to store more information about particular objects including their position in space. Our hypothesis states that as 3D objects contain more information about themselves and their relative position in space than 2D objects, although users take longer to process this information, they should be more accurate when searching and retrieving 3D objects.
   The evaluation study conducted compared spatial abilities between a 2D version of a memory game and an Augmented Reality (AR) version. Results showed that participants took significantly longer to complete the AR 3D version of the game than the 2D version, but did so with significantly fewer attempts i.e. they were more accurate. These results are specifically relevant for the design and development process of interfaces for AR applications.
Hands-on sharing: collaborative document manipulation on a tabletop display using bare hands BIBAFull-Text 25-31
  Masood Masoodian; Sam McKoy; Bill Rogers
Working on electronic shared documents on a tabletop display is an effective form of collaborative work, which is likely to become a common practice in the future. A limiting factor in using tabletop displays at present, however, is their lack of support for multiple direct input by several users, or their reliance on expensive devices for supporting multiple user inputs. This paper describes a simple set of hardware and software solutions for creating a back-projection tabletop display with bare hand input mechanism to allow users to gesture at and select positions in a shared collaborative document. The system provides for a mixture of private and public workspaces for each collaborator.
Graphic designers' quest for the right music BIBAFull-Text 33-40
  Alexander Lang; Masood Masoodian
Graphic designers often need to find suitable pieces of music for their motion graphic designs, animations, etc. Existing music collection search tools and techniques are at best only suitable for ordinary users, and lack powerful mechanisms needed by advanced users such as graphic designers when they are searching for music. To be able to develop such search systems, however, we need to better understand how graphic designers in fact formulate and carry out their search for the right music. Unfortunately very little research has been done in this area. This paper describes a pilot study which was carried out to identify some of the strategies that graphic designers adopt when searching for the music they need. Although the study was rather limited in its scope, nevertheless, it sheds some light on the largely unknown process by which graphic designers search for music.
Mobility interfaces for the visually impaired: what's missing? BIBAFull-Text 41-47
  T. Claire Davies; Catherine M. Burns; Shane D. Pinder
Individuals with visual impairments must rely on information from their other senses to provide them with obstacle preview. Although the long cane has become the most common primary device for detecting obstacles on the ground, other systems have gained acceptance by cane users who already have a high degree of travel ability as secondary mobility devices to detect obstacles that are not ground-based. Echolocation, on the other hand, has been a method of localisation in the past that enables a traveller to orient themselves relative to obstacles in a room and successfully avoid them. Echolocation has recently been rejected due to environmental influences that make it more difficult in noisy environments and social restrictions imposed by orientation and mobility instructors. Localisation could be attained through downconverted ultrasound echoes in the auditory domain, thus echolocation by ultrasound. This paper examines the interfaces that are currently used to display information to visually impaired individuals.
Exploring direct downconversion of ultrasound for human echolocation BIBAFull-Text 49-54
  Shane D. Pinder; T. Claire Davies
Human-computer interfaces for mobility devices to aid visually impaired individuals are deficient in the ease of use of systems. This paper examines the techniques used by blind individuals to spatialize naturally in their environments and seeks to explore the possibility of providing the same information in a manner that may be otherwise more socially acceptable.
Challenges in interface and interaction design for context-aware augmented memory systems BIBAFull-Text 55-58
  Andrea Schweer; Annika Hinze
The human long-term memory is astonishingly powerful but fallible at the same time. This makes it very easy to forget information one is sure one actually knows. We propose context-aware augmented memory systems as a solution to this problem. In this paper, we analyse the user interface and interaction design challenges that need to be overcome to build such a system. We hope for fruitful interdisciplinary discussions on how best to address these challenges.
Exploring interaction patterns of cohesive subgroups during organizational disintegration BIBAFull-Text 59-66
  Shahriar Hasan Murshed; Liaquat Hossain
We suggest that changes in the interactions patterns of communications networks have implications for exploring the phases of organisational disintegration. We develop a set of criteria for measuring the phases of organisational disintegration and apply that to Enron e-mail communications data for testing our preliminary assumptions. We explore the roles of cohesive subgroups (or cliques) and the changes in the composition of clique structure during organisational disintegration. Our preliminary assumptions that drive the work are as follows: (i) the number of cliques increase during organisational disintegration; (ii) structural changes occur in the composition of clique structure and its membership (i.e., we see more contributing actors for the disintegration state clique structure than during the normal state of an organisation).
Users dealing with spam and spam filters: some observations and recommendations BIBAFull-Text 67-72
  Christopher Lueg; Sam Martin
The email communication system is threatened by unsolicited commercial email aka spam. In response, spam filters have been deployed widely to help reduce the amount of spam users have to cope with. This paper describes work towards helping users better understand the often complex decision making that is spam filtering. An investigation of a number of popular web-based email services suggests that the filtering process is typically implemented as a black box allowing very little user involvement. In order to explore how we could help users understand how spam filters work and how they assess messages we conducted a number of user experiments using a simulated email interface providing richer spam filtering information than the webmail interfaces we investigated. Feedback indicates that additional information provided by the interface would be welcome and suggests to further investigate ways to involve users in the filtering process.
Implementation of a multimedia object (MMO) in a variety of web environments BIBAFull-Text 73-79
  Michael Verhaart; John Jamieson
The internet is an environment made up of many digital assets, including text, images, animations, audio and videos. Context is often managed by association, that is, the text on the web page provides a description of the digital-asset. However, this ad-hoc arrangement can lead to a loss of context for the digital asset, particularly if the element has no association with the text.
   Benefits can be found in describing a digital asset in alternative formats. For example, an image of a person can be enhanced if a business card were attached.
   This paper describes a model for describing digital assets, by creating a wrapper for the digital asset that is made up of a manifest containing descriptive data, and related files. Possible human-computer interfaces to existing software are described that allow the digital asset to be displayed on the internet.