International Journal of Human Computer Studies, Volume 50

Volume 50, Number 1, January 1999

• Hector B. Antillanca, David A. Fuller:
  Refining temporal criteria to classify collaborative systems. 1-40
  
• Kenton O'Hara, Stephen J. Payne:
  Planning and the user interface: the effects of lockout time and error recovery cost. 41-59
  
• Cynthia L. Corritore, Susan Wiedenbeck:
  Mental representations of expert procedural and object-oriented programmers in a software maintenance task. 61-83
  
• Kate S. Hone, Chris Baber:
  Modelling the effects of constraint upon speech-based human-computer interaction. 85-107
  

Volume 50, Number 2, February 1999

• Shari Trewin, Helen Pain:
  Keyboard and mouse errors due to motor disabilities. 109-144
  
• Matthew C. Humphrey:
  A graphical notation for the design of information visualizations. 145-192
  
• Hede Helfrich:
  Human reliability from a social-psychological perspective. 193-212
  

Volume 50, Number 3, March 1999

• Alistair G. Sutcliffe, John M. Carroll:
  Designing claims for reuse in interactive systems design. 213-241
  
• Magnus Lif:
  User-interface modelling--adding usability to use cases. 243-262
  
• M. C. Maguire:
  A review of user-interface design guidelines for public information kiosk systems. 263-286
  

Volume 50, Number 4, April 1999

• Patrice Terrier, Jean-Marie Cellier:
  Depth of processing and design-assessment of ecological interfaces: Task nalysi. 287-307
  
• Christopher S. Campbell, Paul P. Maglio:
  Facilitating navigation in information spaces: Road-signs on the World Wide Web. 309-327
  
• Ilia A. Ovsiannikov, Michael A. Arbib, Thomas H. Mcneill:
  Annotation technology. 329-362
  

Volume 50, Number 5, May 1999

• Gennaro Costagliola, Sergio Orefice, Giuseppe Polese, Maurizio Tucci, Genoveffa Tortora:
  On the generation of interactive iconic environments. 363-390
  
• Denis Besnard, Mireille Bastien-Toniazzo:
  Expert error in trouble-shooting: an exploratory study in electronics. 391-405
  
• Frances M. T. Brazier, Jan Treur:
  Compositional modelling of reflective agents. 407-431
  

Volume 50, Number 6, June 1999

• M. M. Taylor:
  Editorial: Perceptual Control Theory and its application. 433-444
  
• W. Thomas Bourbon, William T. Powers:
  Models and their worlds. 445-461
  
• William T. Powers:
  A model of kinesthetically and visually controlled arm movement. 463-479
  
• Richard S. Marken:
  PERCOLATe: Perceptual control analysis of tasks. 481-487
  
• P. S. E. Farrell, J. G. Hollands, M. M. Taylor, H. D. Gamble:
  Perceptual control and layered protocols in interface design: I. Fundamental concepts. 489-520
  
• M. M. Taylor, P. S. E. Farrell, J. G. Hollands:
  Perceptual control and layered protocols in interface design: II. The general protocol grammar. 521-555
  
• Reinder Haakma:
  Towards explaining the behaviour of novice users. 557-570
  
• R. J. Robertson, D. M. Goldstein, M. Mermel, M. Musgrave:
  Testing the self as a control system: Theoretical and methodological issues. 571-580
  
• Charles W. Tucker, David Schweingruber, Clark Mcphail:
  Simulating arcs and rings in gatherings. 581-588