Evaluating system utility and conceptual fit using CASSM

There is a wealth of user-centred evaluation methods (UEMs) to support the analyst in assessing interactive systems. Many of these support detailed aspects of use – for example: Is the feedback helpful? Are labels appropriate? Is the task structure optimal? Few UEMs encourage the analyst to step back and consider how well a system supports users’ conceptual understandings and system utility. In this paper, we present CASSM, a method which focuses on the quality of ‘fit’ between users and an interactive system. We describe the methodology of conducting a CASSM analysis and illustrate the approach with three contrasting worked examples (a robotic arm, a digital library system and a drawing tool) that demonstrate different depths of analysis. We show how CASSM can help identify re-design possibilities to improve system utility. CASSM complements established evaluation methods by focusing on conceptual structures rather than procedures. Prototype tool support for completing a CASSM analysis is provided by Cassata, an open source development

Interactive Digital Image Manipulation System (IDIMS)

The implementation of an interactive digital image manipulation system (IDIMS) is described. The system is run on an HP-3000 Series 3 minicomputer. The IDIMS system provides a complete image geoprocessing capability for raster formatted data in a self-contained system. It is easily installed, documentation is provided, and vendor support is available

Data Mining the SDSS SkyServer Database

An earlier paper (Szalay et. al. "Designing and Mining MultiTerabyte Astronomy Archives: The Sloan Digital Sky Survey," ACM SIGMOD 2000) described the Sloan Digital Sky Survey's (SDSS) data management needs by defining twenty database queries and twelve data visualization tasks that a good data management system should support. We built a database and interfaces to support both the query load and also a website for ad-hoc access. This paper reports on the database design, describes the data loading pipeline, and reports on the query implementation and performance. The queries typically translated to a single SQL statement. Most queries run in less than 20 seconds, allowing scientists to interactively explore the database. This paper is an in-depth tour of those queries. Readers should first have studied the companion overview paper Szalay et. al. "The SDSS SkyServer, Public Access to the Sloan Digital Sky Server Data" ACM SIGMOND 2002.Comment: 40 pages, Original source is at http://research.microsoft.com/~gray/Papers/MSR_TR_O2_01_20_queries.do

MIRAGE: The data acquisition, analysis, and display system

Developed for the NASA Johnson Space Center and Life Sciences Directorate by GE Government Services, the Microcomputer Integrated Real-time Acquisition Ground Equipment (MIRAGE) system is a portable ground support system for Spacelab life sciences experiments. The MIRAGE system can acquire digital or analog data. Digital data may be NRZ-formatted telemetry packets of packets from a network interface. Analog signal are digitized and stored in experimental packet format. Data packets from any acquisition source are archived to a disk as they are received. Meta-parameters are generated from the data packet parameters by applying mathematical and logical operators. Parameters are displayed in text and graphical form or output to analog devices. Experiment data packets may be retransmitted through the network interface. Data stream definition, experiment parameter format, parameter displays, and other variables are configured using spreadsheet database. A database can be developed to support virtually any data packet format. The user interface provides menu- and icon-driven program control. The MIRAGE system can be integrated with other workstations to perform a variety of functions. The generic capabilities, adaptability and ease of use make the MIRAGE a cost-effective solution to many experimental data processing requirements

E-consulting of Small and Medium Agribusiness Enterprises: The case of eEurope Godigital application into the Peloponnese Region

This study describes the design and development of a web-based electronic training system aiming at business operations of small and medium-sized agribusiness enterprises (SMAEs). The proposed system will meet current and future needs of SMAEs for timely, accurate, and customised training removing the barriers of geographical solitude and economies of scale. The objectives of this system are: (a) to offer training and consultancy to SMAEs on how to use information and communication technologies as business tools in order to improve their operations and gain competitive advantage (b) to provide education material customised to the special needs of each SMAE, (c) to provide on-line training, advice and consultancy using special-trained operators, and (d) to provide on-line training, advice and consultancy by skilled operators who have been trained to offer those services. ETS will be an Internet-based system. The system will operate as a third-party trusted intermediate between SMAEs, consultants, and content providers. The system design will be extended to cover the needs of the programme "Training support for Go-Digital Project" funded by Greek Ministry of Development which aims to offer training and support in the usage of Internet services to 50.000 SMEs

Studying Law Students’ Information Seeking Behaviour to Inform the Design of Digital Law Libraries

In this paper, we describe our ongoing work which involves examining the information seeking behaviour of legal professionals. This work involves studying the behaviour of both academic and practicing lawyers with the long-term aim of integrating user-centred legal information seeking support into digital law libraries. We report preliminary findings from the initial phase of the study, which comprised a series of semistructured interviews and naturalistic observations of academic law students looking for information that they require for their work. This group of academic lawyers often found it difficult to find the information that they were looking for when using digital law libraries. A potential symptom of this difficulty was that hazy and incorrect knowledge of the digital library system and information sources within the system were rife. This suggests the need for students to understand more about the digital library systems that they use (within-systems knowledge). We also found that although this group of academic lawyers often used several electronic resources in a complementary fashion to conduct legal information seeking, they often chose to rely primarily on one of either the LexisNexis or Westlaw digital law library platforms. Their preference was often based upon vague or sometimes flawed rationale and suggests the need for students to appreciate the situations in which different electronic resources might be useful (between-systems knowledge)