Which term refers to a usability dimension that is concerned with how difficult it is for the user to perform a task for the first time?

12.

The term identifies that quality of a system that makes it easy to learn, easy to use, and encourages the user to regard the system as a positive help in getting the job done. Usability it is defined by five quality components: Learnability, which defines how easy it is for users to accomplish basic tasks the first time they encounter the design; Efficiency, which defines users’ quickness in performing tasks; Memorability, which is important when users return to the design after a period of not using it, in order to define how easily they can reestablish proficiency; Errors, which defines how many errors users make, how severe are these errors, and how easily they can recover from errors; And satisfaction, which that defines the satisfaction of the users using the systems. Learn more in: Improving Multimedia Digital Libraries Usability Applying NLP Sentence Similarity to Multimodal Sentences

19.

The extent to which a product can be used by specified users to achieve specified goals with effectiveness, efficiency and satisfaction in a specified context of use. endnote 1 Cf. (Bullinger et al., 1998, p.30 AU19: The in-text citation "Bullinger et al., 1998" is not in the reference list. Please correct the citation, add the reference to the list, or delete the citation. ]. Learn more in: Barriers to Successful Knowledge Management

20.

Usability is: “The extent to which a product can be used by specified users to achieve specified goals with effectiveness, efficiency, and satisfaction in a specified context of use.” (ISO 9241-11 Ergonomic requirements for office work with visual display terminals: Guidance on usability, 1998). ISO 9241 identifies the following as the most useful indicators in measuring the level of usability of a product: effectiveness in use, efficiency in use, and satisfaction in use. Learn more in: Appropriating Heuristic Evaluation Methods for Mobile Computing

23.

Usability is the effectiveness, efficiency and satisfaction with which specified users achieve specified goals in particular environments (process-oriented definition). Usability is the capability of the software product to be understood, learned, used and attractive to the user, when used under specified conditions (product-oriented definition). Learn more in: Usability-Oriented Quality Model Based on Ergonomic Criteria

27.

ISO 9241-11 defines usability as “the extent to which a product can be used by specified users to achieve specified goals with effectiveness, efficiency and satisfaction in a specified context of use.” Usability of hypertext/Web is commonly measured using established usability dimensions covering categories of usability defects such as screen design, terminology and system information, system capabilities and user control, navigation, and completing tasks. Learn more in: Design and Development of a Taxonomy Generator: A Case Example for Greenstone

31.

A process of determining how effectively and efficiently people are able to use products or systems created by designers. A core aspect of usability is having people use the product or interface and examine how easy or difficult it is to use. Based on these data, designers make refinements to the system. Learn more in: Design, New Media, and Human-Computer Interactions

36.

The term is usually taken to mean that a product is easy to use or “user friendly.” In a more technical sense, the term refers to one of six software characteristics that a product has to have in order to achieve the quality set by the ISO standards. Learn more in: An Integrative Approach to User Interface Design

39.

This focuses on the creating of the system making sure it is useable. Using the user’s experiences and the factors involved this helps to create a better view into the development of technology, and help provide and maintain a better experience for the user with future technologies. Learn more in: Context Awareness in Mobile Devices

40.

A key concept of human-computer interface. ISO standard (1997, 1999) views usability as a measure of the quality of a software system: “Usability is the extent to which a product or a system can be used by specified users to achieve specified goals with effectiveness, efficiency, and satisfaction in a specified context of use” (Bevan, 2001 p. 536). Learn more in: E-Learning Design Quality

46.

The usability concept refers to the time a system takes to perform tasks, to user satisfaction and to the ease with which the user learns to interact with that system. According to the ISO 9126-1 standard, usability is defined as “the capability of a software product to be understood, learned, used, and attractive to the user when used under specified conditions.” Learn more in: Improving User Satisfaction in VO through Systems Usability

47.

The quality of a user's experience when interacting with products or systems, including websites, software, devices, or applications. Usability is about effectiveness, efficiency, and the overall satisfaction of the user. Learn more in: Virtual Training for Scuba Divers

50.

A term used to denote the ease with which people can employ a particular tool or other human-made object in order to achieve a particular goal effectively with efficiency and satisfaction. In the human-computer interaction context of this chapter, usability refers to the elegance and clarity with which the interaction with a Web site is designed Learn more in: UI Design for Mobile Technology in a Closed Environment

51.

Usability is related to interactive tools and their users. Knowing the users, their goals and the context they use the tool in are the main principles of usability. Efficiency of use, learnability, memorability and subjective satisfaction can be considered as dimensions of usability, but also other criteria can be defined. Usability research explores the relationship between the user, his goals or tasks and the use context. The objective in usability design is to find harmony between these elements. Learn more in: Local Internet Forums: Interactive Land Use Planning and Urban Development in Neighbourhoods

57.

Is defined as the ease of use and learnability of a human-made object such as a tool or device. It comprises effectiveness, efficiency, learnability, flexibility, robustness, and utility. A usable system should be easy to learn, easy to remember how to use, effective to use, efficient to use, safe to use and enjoyable to use. In software engineering, is related to the degree to which a software can be used by the end-users to achieve quantified objectives with effectiveness, efficiency, and satisfaction in a quantified context of use. Needs analysis and the study of the principles behind an object's perceived efficiency or elegance are in the frames of usability. In human-computer interaction and computer science, usability studies the elegance and clarity with which the interaction with a computer program or a web site is designed. User satisfaction and utility are quality components of usability. Learn more in: Major Metrics, Concerns, and Assessment Strategy for Mobility Assistive Devices

61.

The degree to which human-technological systems, artifacts, and products are appropriately and efficiently designed for the user (i.e., ease of use) is the indication of that product’s usability. Various heuristics and criteria can provide an objective, empirical basis against which to measure and evaluate the level and degree of design efficiency corresponding to the key construct of usability. Learn more in: Human-Factors Design for Public Information Technology

66.

The extent to which a product can be used by specified users to achieve specified goals with effectiveness, efficiency, and satisfaction in a specified context of use. In order to evaluate usability, five criteria are used: (1) learnability, (2) effectiveness, (3) efficiency, (4) satisfaction, and (5) capability. Learn more in: Computer Music Interface Evaluation

74.

The effectiveness, efficiency, and satisfaction with which specified users of a particular piece of technology can achieve specified goals. Often considered a basic requirement of all new interactive applications and sometimes regulated using ISO9241 11. Learn more in: Designing a Ubiquitous Audio-Based Memory Aid

76.

Usability is defined as the effectiveness, efficiency and satisfaction with which specified users achieve specified goals in particular environments. Effectiveness is the accuracy and completeness with which specified users can achieve specified goals in particular environments. Efficiency is the resources expended in relation to the accuracy and completeness of goals achieved. Satisfaction is the comfort and acceptability of the work system to its users and other people affected by its use. Learn more in: Using a Design Science Research Approach to Develop a HCI Artifact for Designing Web Interfaces: A Case Study

83.

The degree to which human-technological systems, artifacts, and products are appropriately and efficiently designed for the user (i.e., ease of use) is the indication of that product’s usability. Various heuristics and criteria can provide an objective, empirical basis against which to measure and evaluate the level and degree of design efficiency corresponding to the key construct of usability. Learn more in: Human Factors for Networked and Virtual Organizations

84.

The ISO 9241-11 standard states that usability is the “effectiveness, efficiency and satisfaction with which a specified set of users can achieve a specified set of tasks in a particular environment”. Learn more in: Web Usability

85.

Is an equivalent to “user friendliness” and denotes the ease with which people can employ a tool or an object in order to achieve a particular goal. Learn more in: The Ubiquitous Grid

88.

The delivery mechanism must be straightforward to use with minimum effort required. Some general rules to guide these principles are maintain a simple design, reducing the number of tables and frames; summarize the key contents on the display; reduce the pages to an adequate number to vehicle the information to the user; make the navigation easy and the remote-control ergonomic; guarantee an intuitive and simple layout; make the visual and graphics elements have no impact on the timing of downloading; create indexes and supports to the navigation that contribute to fasten the process of searching. Learn more in: Accessibility, Usability, and Functionality in T-Government Services

93.

According to an ISO (ISO, 1998) definition, this term indicates “the extent to which a product can be used by specified users to achieve specified goals with effectiveness, efficiency, and satisfaction in a specified context of use.” More generally, “usability” denotes the ease with which people can employ a particular tool or object in order to achieve a particular goal. The term also refers to techniques for testing ease-of-use of existing products as well as methods for improving simplicity of usage during the design process of new ones. Learn more in: Web Accessibility

94.

Usability is the extent to which a product can be used by specified users to achieve specific goals, with effectiveness, efficiency, and satisfaction in a context of use. Both software and Web sites can be tested for usability. For example, the ease with which visitors are able to use a Web site. Learn more in: Experience Factors and Tool Use in End-User Web Development

124.

The ease with which a user can accomplish a desired task within a Web site. One also talks of a site being user-friendly. Learn more in: Learnability

125.

Usability is a fine and complex concept, quite beyond intuition. In simple terms, usability refers to the qualities of an object related to its use or, rather, it’s “ease-of-use”. Usability is also the science that studies the principles and design rules to be adopted in order to make usable things. Usability is notoriously a critical issue when dealing with the user interfaces of consumer electronics, computers, communication tools and the Web. Learn more in: Ambient Intelligence

127.

ISO 9241-11 defines usability as “the extent to which a product can be used by specified users to achieve specified goals with effectiveness, efficiency, and satisfaction in a specified context of use.” Usability of hypertext/Web is commonly measured using established usability dimensions covering these categories of usability defects, such as screen design, terminology and system information, system capabilities and user control, navigation, and completing tasks. Perceived usability expresses people’s belief to the extent that a system is not too hard to use, and the performance benefits are not outweighed by the effort of using it. Learn more in: Handhelds for Digital Libraries

130.

The ability of a system to interact naturally and transparently with its users. “Naturally” in this context is the way the user is used to act and “transparently” means not interfering with the performed task. Learn more in: Heuristically Evaluating Web-Based ODL

133.

According to the ISO 9241(1998) standard usability is: “The ease with which a user can learn to operate, prepare inputs for, and interpret outputs of a system or component.” Learn more in: Understanding User Experience

134.

According to the ISO standard, usability of a system is evaluated in terms of effectiveness (the extent to which the intended goals of use are achieved), efficiency (the resources, such as mental effort, that have to be expended in order to achieve the intended goals) and satisfaction (the extent to which the user finds the use of the product acceptable) with a particular system in a particular context. Learn more in: Evaluation of a Speech Interactive CALL System