61043025
Auditory icons in large-scale collaborative environments
45789414
A Simple and Unifying Approach to Subjective Objects
Abstract Most object-oriented languages are objective: an object always responds to the same message in the same way. Subjective objects more closely match naturally occurring systems, and they provide consistent solutions to a wide range of problems, problems that otherwise must be solved by varied and specialized mechanisms. Applying a perspective-receiver symmetry principle in designing the subjectivity semantics of an object-oriented language results in a semantically uncluttered language with a surprisingly wide range of utility. We employ this approach in creating the language Us, a subjective version of Self.
5462210
Programming as an Experience: The Inspiration for Self
The Self system attempts to integrate intellectual and nonintellectual aspects of programming to create an overall experience. The language semantics, user interface, and implementation each help create this integrated experience. The language semantics embed the programmer in a uniform world of simple objects that can be modified without appealing to definitions of abstractions. In a similar way, the graphical interface puts the user into a uniform world of tangible objects that can be direcdy manipulated and changed without switching modes. The implementation strives to support the world-of-objects illusion by minimizing perceptible pauses and by providing true source-level semantics without sacrificing performance. As a side benefit, it encourages factoring. Although we see areas that fall short of the vision, on the whole, the language, interface, and implementation conspire so that die Self programmer lives and acts in a consistent and malleable world of objects.
41296063
Prototype-based languages: object lessons from class-free programming
5111320
Work rhythms: analyzing visualizations of awareness histories of distributed groups
We examined records of minute-by-minute computer activity coupled with information about the location of the activity, online calendar appointments, and e-mail activity. We present a number of visualizations of the data that exhibit meaningful patterns in users' activities. We demonstrate how the patterns vary between individuals and within individuals according to time of day, location, and day of the week. Some patterns augment the schedule information found in people's online calendars. We discuss applications for group coordination (especially across time zones) plus opportunities for future research. In light of the popularity of instant messaging, this research identifies some of the benefits and privacy risks associated with the uses of online presence and awareness information.
18645963
Robust gloves for 3D interaction in mobile outdoor AR environments
This paper describes the design of hand-worn gloves for interacting with mobile outdoor augmented reality systems. Most existing systems rely on more traditional 2D input devices such as mice and keyboards. Since augmented reality information is typically registered in 3D to the environment, user interfaces need to be designed that are capable of supporting the more complex operations possible. This paper describes how we used metallic thread and adhesive fabric to add conduction sensing to a standard set of gloves which can survive harsh treatment; how Bluetooth and MSP430 microcontrollers are used to build a small circuit that is wireless and highly portable; and how AR-ToolKit is used for 3D tracking of fiducial markers on the thumbs. While we have previously demonstrated this technology with a number of our previous systems, this paper explains the various techniques we use in the implementation.
7346462
Ontology-based extraction and structuring of information from data-rich unstructured documents
We present a new approach to extracting information from unstructured documents based on an application ontology that describes a domain of interest. Starting with such an ontology, we formulate rules to extract constants and context keywords from unstructured documents. For each unstructured document of interest, we extract its constants and keywords and apply a recognizer to organize extracted constants as attribute values of tuples in a generated database schema. To make our approach general, we fix all the processes and change only the ontological description for a different application domain. In experiments we conducted on two different types of unstructured documents taken from the Web, our approach attained recall ratios in the 80% and 90% range and precision ratios near 98%.
2984394
Augmented Reality Chinese Checkers
This paper presents an application, Augmented Reality Chinese Checkers that we created to investigate user interface issues for table top projected augmented reality entertainment applications. A new tangible interaction device, the wireless button enhanced fiducial, is introduced to support selection tasks in mixed reality environments. The Augmented Reality Chinese Checkers game is built on a framework which can be used to create other computer supported collaborative games. The system is built using the Passive Detection Framework to track the 6 degrees of freedom position in real time of marked objects in the environment. The game supports up to six players at a time.
38459829
Mandatory protection for Internet server software
Server software on the Internet is today's high point for software at risk. Ongoing reports of security flaws suggest that conventional Internet server software packages are intrinsically vulnerable to "server overrun", an attack that subverts the server's behavior and causes it to run attack code instead. The attack code then penetrates other portions of the server host or site unless there are additional defenses. Mandatory protection mechanisms, like those developed for multilevel security applications, can limit the risks of server overrun to a site. Commercial systems have been developed that use three distinct mechanisms: Unix "chroot" isolation, multilevel security (MLS), and type enforcement. The paper compares and contrasts these three mechanisms for server protection.
31744347
Undergraduate Software Engineering - An Innovative Degree at Swinburne
In this paper we outline the context for the development of an undergraduate degree in Software Engineering in Australia, reflect on curriculum development ideas relevant to such a degree, and describe aspects of the Computer Science degree at Swinburne which, despite its title, may be viewed as a Software Engineering degree. We emphasise the role of project-based units within the degree.