This paper describes a study in which HTML style guides were characterized, compared to established HCI style guides, and evaluated against findings from HCI reviews of web pages and applications. Findings showed little consistency among the 21 HTML style guides assessed, with 75% of recommendations appearing in only one style guide. While there was some overlap, only 20% of HTML relevant recommendations from established style guides were found in HTML style guides. HTML style guides emphasized common look and feel, information display, and navigation issues with little mention of many issues prominent in established style guides such as help, message boxes and data entry. This difference is reinforced by other results showing that HTML style guides addressed concerns of web information content pages with much greater success than web-based applications. It is concluded that while the WWW represents a unique HCI environment, development of HTML style guides has been less rigorous, with issues associated with web-based applications largely ignored.
Reported is an experiment which was designed to (1) test the strength-precision relationship of grip and shoulder strength with competitive pistol shooting scores using a nationally ranked collegiate pistol team and (2) determine the effects of a very brief, specifically focused, intense grip and shoulder strength training program (10 min, 3 times per week for 8 weeks) on strength and shooting performance. All members of the Pennsylvania State University Navy ROTC Pistol Team (n = 12) were divided into two matched groups according to pre-test shooting scores. Both groups received identical shooting instruction and practice, but the training group participated in an eight-week strength development program while the control group did not. Maximum isometric strength (peak and 4-sec average force) measures were obtained from electronic output of a hand dynamometer and strain gauge (deltoid contraction from a lateral horizontal shooting position against an arm cuff). Shooting scores (slow fire, timed fire, rapid fire, and total) were used as performance measures. The 24 intense but brief exercise bouts did not produce group training effects, despite painstaking efforts to use (1) exercises documented to produce training effects, (2) subjects who were highly motivated, (3) accurate and reliable strength testing equipment, and (4) a program which exercised to fatigue each day the target muscles. This finding is particularly alarming because of the strong body of literature suggesting the effect should have occurred. It also suggest that the time spent in strength training might better be spent in shooting. Nonetheless, robust strength-performance correlations were obtained, particularly in two areas: (1) slow fire shooting scores with grip strength and (2) timed and rapid fire with deltoid strength. Furthermore, individual subject analysis revealed that those that improved in strength also improved in shooting skill. This training was effective for improving strength and scores in some subjects, especially in producing increases in deltoid strength concomitant with improvements in timed and rapid fire scores. This work has implications for all types of free-limb shooting activities, for military and civilian populations, and for novice and elite performers.
Six college-age male subjects performed one hundred, two-minute trials on a second-order tracking task. After each trial, subjects estimated perceived workload using both the NASA TLX and SWAT workload assessment procedures. Results confirmed an expected performance improvement on the tracking task which followed traditional learning curves within the performance of each individual. Perceived workload also decreased for both scales across trials. While performance variability significantly decreased across trials, workload variability remained constant. One month later, the same subjects returned to complete the second experiment in the sequence which was a retention replication of the first experiment. Results replicated those for the first experiment except that both performance error and workload were at reduced overall levels. Results in general affirm a parallel workload reduction with performance improvement, an observation consistent with a resource-based view of automaticity.
This paper describes a study in which Web style guides were characterized, compared to traditional human-computer interface (HCI) style guides, and evaluated against findings from HCI reviews of web pages and applications. Findings showed little consistency among the 21 Web style guides assessed, with 75% of recommendations appearing in only one style guide. While there was some overlap, only 20% of Web-relevant recommendations from traditional style guides were found in Web style guides. Web style guides emphasized common look and feel, information display, and navigation issues, with little mention of many issues prominent in traditional style guides such as help, message boxes, and data entry. This difference is reinforced by other results showing that Web style guides address Web information-only pages with much greater success than web-based control enabling features, like buttons and entry fields. It is concluded that while the WWW represents a unique graphical user interface (GUI) environment, development of Web style guides has been less rigorous, with issues associated with web-based control enabling features neglected.
The increasing use of on-site inspection (OSI) to meet the nation's obligations with recently signed treaties requires the nation to manage a variety of inspection requirements. This document describes a prototype automated system to assist in the preparation and management of these inspections. DISCLAIMER Portions of this document may be illegible in electronic image products. Images are produced from the best available original document. DISCLAIMER This report was prepared as an account of work sponsored by a n agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, make any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disdosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commeraal product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessan'ly comtitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. Notice AutoCAD, AutoDesk, and AutoLISP are registered trademarks and ACAD, Animator Pro, and DXF are trademarks of AutoDesk, Inc. ARC/INFO and ESRI are registered trademarks and ArcCAD and ArcVIEW are trademarks of Environmental Systems Research Institute, Inc.. dBase is a registered trademark of Ashton-Tate Corporation Folio Views is a registered trademarks of Folio Corp. HP is a registered trademark of Hewlett-Packard Corporation. Intergraph is a registered trademark of Intergraph Corporation. Microsoft and MS-DOS are registered trademarks and Windows is a trademark of Microsoft Corporation. ORACLE is a registered trademark of Oracle Corp. POSTSCRIPT is a registered trademark of Adobe Systems, Inc. SPARC is a registered trademark of SPARC International, Inc. Sun Workstation and PC-NFS are registered trademarks and OpenWindows, Sun, Sun OS, and NFS are trademarks of Sun Microsystems, Inc. Toshiba is a registered trademark of Kabushiki Kaisha Toshiba. Tracer for AutoCAD and CADCORE are registered trademarks of Information Graphics Systems Inc. UNIX is a registered trademark of UNIX Systems Laboratories. All other brand and product names are trademarks or registered trademarks of their respective holders.
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