We introduce CrossY, a simple drawing application developed as a benchmark to demonstrate the feasibility of goal crossing as the basis for a graphical user interface. We show that crossing is not only as expressive a...
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As we have moved to a more technology-based classroom, much attention has been paid to using computers to present material. computer-based presentations can be a powerful tool for faculty, but as more and more student...
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Information-rich virtual environments (IRVEs) have been described as environments in which perceptual information is enhanced with abstract (or symbolic) information, such as text, numbers, images, audio, video, or hy...
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There are a wide variety of ways to present information at the front of a classroom. These include chalk on a blackboard, markers on a whiteboard, pens on transparencies, and computer projection systems. While compute...
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ISBN:
(纸本)1581137982
There are a wide variety of ways to present information at the front of a classroom. These include chalk on a blackboard, markers on a whiteboard, pens on transparencies, and computer projection systems. While computer-based presentation systems provide many opportunities both in and out of the classroom, there may also be many limitations. In-class spontaneity and dynamic exposition might be restricted. Class preparation time might increase dramatically when compared to the amount required to prepare handwritten materials. Certain presentation techniques may no longer be available. This paper will introduce a computer-based presentation system modeled on handwritten transparencies. It will then discuss how it addresses the above issues as well as how it can be used in and out of the classroom. These will be explored in the context of its use while teaching an undergraduate discrete mathematics course. Copyright 2004 ACM.
The fundamental question for an information-rich virtual environment is how to access and display abstract information. We investigated two existing navigation techniques: Hand-Centered Object Manipulation Extending R...
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The fundamental question for an information-rich virtual environment is how to access and display abstract information. We investigated two existing navigation techniques: Hand-Centered Object Manipulation Extending Ray-casting (HOMER) and Go-Go navigation, and two text layout techniques: within-the-world display (WWD) and heads-up display (HUD). Four search tasks were performed to measure participants' performance in a densely packed environment. HUD enabled significantly better performance than WWD and the Go-Go technique enabled better performance than the HOMER technique for most of the tasks. We found that using HOMER navigation combined with the WWD technique was significantly worse than other combinations for difficult naïve search tasks. Users also preferred the combination of Go-Go and HUD for all tasks.
Small-scale classification schemes which are used extensively in the coordination of cooperative work are discussed. The study investigates the creation and use of a classification scheme for handling the system requi...
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Small-scale classification schemes which are used extensively in the coordination of cooperative work are discussed. The study investigates the creation and use of a classification scheme for handling the system requirements during the redevelopment of a nation-wide information system. The requirements classification provide the software engineers with an important means of discretely balancing the contractual aspect of requirements engineering. The requirements classification is analyzed in terms of complementary concepts of boundary objects.
We investigate how users interact with the results page of a WWW search engine using eye-tracking. The goal is to gain insight into how users browse the presented abstracts and how they select links for further explor...
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ISBN:
(纸本)1581138814
We investigate how users interact with the results page of a WWW search engine using eye-tracking. The goal is to gain insight into how users browse the presented abstracts and how they select links for further exploration. Such understanding is valuable for improved interface design, as well as for more accurate interpretations of implicit feedback (e.g. clickthrough) for machine learning. The following presents initial results, focusing on the amount of time spent viewing the presented abstracts, the total number of abstract viewed, as well as measures of how thoroughly searchers evaluate their results set.
We present Citrine, a system that extends the widespread copy-and-paste interaction technique with intelligent transformations, making it useful in more situations. Citrine uses text parsing to find the structure in c...
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We discuss our research into the development and testing of a notification system claims library for assisting designers in interface development. Our research focuses on achieving consistent values among multiple use...
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ISBN:
(纸本)1581138709
We discuss our research into the development and testing of a notification system claims library for assisting designers in interface development. Our research focuses on achieving consistent values among multiple users when adding and searching claims. We discuss the methods used for redesigning the application, techniques used for testing, and reengineering goals for the Claims Library. This work extends previous efforts on design knowledge reuse in the HCI research community, as such our methods and techniques should be reusable by others. We designed the interface to the library for users entering claims, ensuring usability and understandability. Since we noted problems with a particular feature (the IRC input method) through an internal round of testing, we conducted a lab-based test to isolate specific breakdowns. Our results validated portions of claim classification indices, suggest key reengineering changes that should inform ongoing and future development of the claims library - of broad interest of notification systems developers. Copyright 2004 ACM.
Notification interfaces that continuously present peripheral information have received increasing interest within the HCI community, especially those supporting awareness of others' activities. While recent empiri...
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ISBN:
(纸本)1581138709
Notification interfaces that continuously present peripheral information have received increasing interest within the HCI community, especially those supporting awareness of others' activities. While recent empirical studies have focused on information design aspects of peripheral displays, there have been few reported studies that comparatively evaluate actual systems. To this end, this article describes our efforts in comparing three interfaces that inform a remote user about activities within a given setting. Our data allow conclusions about comparative interface usability and preference, and provide an indication about metrics that are valuable to focus on in evaluations for these types of interfaces. In particular, we find that quantitative, performance related metrics, such as the correctness of notification interpretation and interruption to a primary task, are much less conclusive for fully implemented peripheral interfaces than qualitative judgments based on the usage experience. Copyright 2004 ACM.
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