Design and Evaluation of Individual Elements of the Interface for an Agricultural Machine

2018 ◽  
Vol 24 (1) ◽  
pp. 27-42
Author(s):  
Aadesh K. Rakhra ◽  
Danny D. Mann
Keyword(s):  
User Interface ◽  
Situation Awareness ◽  
Interface Design ◽  
Information Needs ◽  
Mental Workload ◽  
Mean Difference ◽  
Human Operator ◽  
Interface Elements ◽  
Agricultural Machines ◽  
User Centered

Abstract. If a user-centered approach is not used to design information displays, the quantity and quality of information presented to the user may not match the needs of the user, or it may exceed the capability of the human operator for processing and using that information. The result may be an excessive mental workload and reduced situation awareness of the operator, which can negatively affect the machine performance and operational outcomes. The increasing use of technology in agricultural machines may expose the human operator to excessive and undesirable information if the operator’s information needs and information processing capabilities are ignored. In this study, a user-centered approach was used to design specific interface elements for an agricultural air seeder. Designs of the interface elements were evaluated in a laboratory environment by developing high-fidelity prototypes. Evaluations of the user interface elements yielded significant improvement in situation awareness (up to 11%; overall mean difference = 5.0 (4.8%), 95% CI (6.4728, 3.5939), p < 0.0001). Mental workload was reduced by up to 19.7% (overall mean difference = -5.2 (-7.9%), n = 30, a = 0.05). Study participants rated the overall performance of the newly designed user-centered interface elements higher in comparison to the previous designs (overall mean difference = 27.3 (189.8%), 99% CI (35.150, 19.384), p < 0.0001). Keywords: Agricultural machines, Interface design principles, Situation awareness, User-centered design, User interface design, User experience.

Effect of Audio-Visual Alerts on Situation Awareness and Workload in a Net-Centric Warfare Scenario

2007 ◽  
Vol 51 (18) ◽  
pp. 1205-1209
Author(s):  
Jennifer M. Ross ◽  
John S. Barnett ◽  
Larry L. Meliza
Keyword(s):  
Situation Awareness ◽  
Mental Workload ◽  
Human Operator ◽  
Moderating Effects ◽  
Critical Events ◽  
Perceived Workload ◽  
The Common ◽  
Information Advantage ◽  
Inherent Nature

The goal of net-centric warfare (NCW) is to give soldiers an information advantage that leads to a war-fighting advantage. However, the inherent nature of NCW systems is often quite complex and dynamic, which leads to impaired situation awareness (SA) and heightened levels of mental workload for the human operator. The following study investigated the moderating effects of automated audio-visual alerts on user SA and perceived workload while using a net-centric warfare system. Twenty-six participants observed battlefield scenarios on a simulation of the common NCW system, Force XXI Battle Command Brigade and Below (FBCB2), and were required to pay attention and remember critical events (e.g., the appearance of an enemy unit). The system was presented with or without an automated alerting aid that provided combined auditory and visual alerts when certain critical events occurred (i.e., System to Help Implement and Empower Leader Decisions; SHIELD). Results revealed that contrary to current assumptions the use of an automated alerting aid did not impact user SA; however, perceived workload was significantly lower with the addition of the alerting aid. This work demonstrates that the automated alerts used in this NCW experiment do not affect SA (either positively or negatively) and decreased perceived workload.

User Interface Design Guidelines for Marine Autonomous Operations Involving a Large Number of Actors, Devices and Sensors

2018 ◽  
Author(s):  
Hanna Poranen ◽  
Giancarlo Marafioti ◽  
Gorm Johansen ◽  
Eivind Sæter
Keyword(s):  
User Interface ◽  
Situation Awareness ◽  
User Interfaces ◽  
Interface Design ◽  
User Interface Design ◽  
Design Guidelines ◽  
Work Process ◽  
User Experience Design ◽  
Content Part ◽  
User Friendly

User interface (UI) is a platform that enables interaction between a human and a machine, a visual part of an information device, such as a computer or software, which user interacts with. A good user interface design makes operating a machine efficient, safe and user friendly in a way that gives the desired result. This paper describes a set of guidelines defined for marine autonomous operations where many actors, devices and sensors are interacting. The UI should manage and present in a user-friendly manner a large amount of data, ensuring situation awareness for the operator/user. The design guidelines of the user interface consist of both a work process part and a content part, also called user experience design (UX). The work process consists of four sections: manage, plan, operate and evaluate, while the content part focuses on how to show the information. Both parts will be detailed and discussed and can be taken as a reference for designing user interfaces in particular for marine autonomous operations.

scholarly journals HTML5 in Development of Assessment Tasks for e-Learning

2014 ◽  
Vol 16 (1) ◽  
pp. 105-110
Author(s):  
Kateryna Synytsya ◽  
Natalya Prokofyeva ◽  
Aleksejs Grocevs ◽  
Vladimirs Tomko
Keyword(s):  
User Interface ◽  
Learning Environments ◽  
Interface Design ◽  
User Interface Design ◽  
Learning Systems ◽  
Interface Elements ◽  
Assessment Tasks ◽  
E Learning

Abstract The paper describes various types of assessment tasks that are used in e-learning environments and studies the use of HTML5 in the development of user interface elements for e-learning systems. Popular existing practices of HTML5 user interface design are examined, and some examples relevant to e-learning environments are provided.

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