Design guidelines review and conceptual design of an user-centered information display for mobile agricultural machines

2014 ◽  
Keyword(s):  
Conceptual Design ◽  
Design Guidelines ◽  
Information Display ◽  
Agricultural Machines ◽  
User Centered

Design of a compact statically balanced direct-drive manipulator

Robotica ◽  
1990 ◽  
Vol 8 (4) ◽  
pp. 347-353
Author(s):  
Tarek M. Abdel-Rahman ◽  
M.A. Elbestawi
Keyword(s):  
Conceptual Design ◽  
Dynamic Characteristics ◽  
High Speed ◽  
Design Methodology ◽  
Dynamic Behaviour ◽  
Design Guidelines ◽  
Kinematics And Dynamics ◽  
Direct Drive ◽  
Static Balancing ◽  
Design Considerations

SUMMARYThis paper addresses the conceptual design of direct-drive manipulators which have good promise for high speed, high precision manipulation. In the design methodology presented, the procedure begins by considering the kinematic aspects and ends by configuring manipulator structures with promising kinematic and dynamic characteristics. Based on the conceptual design considerations, a novel 3 DOF (RRR) direct-drive manipulator is proposed and analyzed. The manipulator structure has only five links and a compact configuration. Manipulator kinematics and dynamics are analyzed. Design guidelines are derived for static balancing of the manipulator and for minimizing the inertias driven by the motors. Operational configurations that either improve or worsen the kinematic and dynamic behaviour or characteristics of the manipulator are identified. The proposed design has an advantage over many currently known direct-drive manipulators for achieving two desirable mechanical features, namely: static balancing and compactness (smaller driven inertias).

scholarly journals A User-Centered Approach to Design a Mobile Application for Chronic Pain Management

2020 ◽  
Vol 81 (1-4) ◽  
pp. 24-29
Author(s):  
Yingdong Liu ◽  
Benoît Encelle ◽  
Karim Sehaba
Keyword(s):  
Chronic Pain ◽  
Pain Management ◽  
Mobile Application ◽  
Evaluation Process ◽  
Design Guidelines ◽  
Chronic Pain Management ◽  
Usability Tests ◽  
Computer Scientists ◽  
Persona Development ◽  
User Centered

This paper presents a user-centered approach for the design/re-design of a mobile application for chronic pain management, with a focus on chronic low back pain, sometimes referred to as "invisible disability". Within the framework of a multidisciplinary project involving physicians, patients and computer scientists, the work presented here describes firstly an identification and representation process of the needs/expectations of the users of such an application (patients/physicians), based on a data-driven persona development method and, secondly, an evaluation process of the user experience (UX) of the current version of the application, using among others usability tests. The aim of the approach is to establish (re-)design guidelines in order to improve this kind of application.

scholarly journals Virtual reality-based cognitive healthcare interventions: User-centered design considerations, guidelines and framework

2019 ◽  
Author(s):  
Rebeca I. García-Betances ◽  
María Fernanda Cabrera-Umpiérrez ◽  
María Teresa Arredondo Waldmeyer
Keyword(s):  
Virtual Reality ◽  
Design Process ◽  
Substantial Improvement ◽  
Design Guidelines ◽  
User Centered Design ◽  
General Acceptance ◽  
Road Map ◽  
Healthcare Interventions ◽  
The One ◽  
User Centered

Design of computer-based non-pharmacological cognitive healthcare interventions for people afflicted by chronic neurodegenerative impairments must be soundly informed by and clearly centered on users’ distinctive disabilities. In this article we present a use-oriented analysis of those cognitive interventions intended for healthcare of patients with Alzheimer’s dementia and related disorders that use human-computer interaction based on virtual reality technology. The analysis identifies the most important strengths and weakness, and describes and assesses the main key opportunities and challenges inherent to the use of this type of cognitive healthcare interventions. The most critical specific usability concerns that considerably affect these interventions are described in order to be directly addressed during a user-centered design process. Significant evaluation issues that still trouble these interventions’ general acceptance are also included. On the basis of this analysis, appropriate actions are recommended to help minimize accessibility and usability issues. Finally, concrete design guidelines, and a framework with its road map are proposed to direct the design process. The proposed framework’s more outstanding features and functionalities are described in relation to user-centered design conceptualization, implementation and assessment. The use of a consistent user-centered design methodology, such as the one proposed here to tackle the main critical obstacles, could turn out to become the key that allows to achieve a substantial improvement of VR-based cognitive healthcare interventions effectiveness.

Designing Speech Displays for Telephone Information Systems

1988 ◽  
Vol 32 (4) ◽  
pp. 215-218 ◽  
Author(s):  
David W. Herlong ◽  
Beverly H. Williges
Keyword(s):  
Information Systems ◽  
Speech Rate ◽  
Design Guidelines ◽  
User Preference ◽  
Specific Information ◽  
Search Performance ◽  
Male And Female ◽  
Information Display ◽  
Female Voices ◽  
Different Levels

This study used a computer-driven telephone information system as a real-time human-computer interface to simulate applications where synthetic speech is used to access data. Subjects used a telephone keypad to search though an automated department store database to locate and transcribe specific information messages. Because speech provides a sequential and transient information display, users may have difficulty navigating through auditory databases. One issue investigated in this study was whether the alternate use of male and female voices to code different levels of the database would improve user search performance. Other issues investigated were the basic intelligibility of these male and female voices as influenced by different levels of speech rate. All factors were assessed as functions of search or transcription task performance and user preference. Analysis of transcription accuracy, user search efficiency and time, and subjective ratings revealed an overall significant effect of speech rate on all groups of measures but no significant effects for voice type or coding scheme. Results were used to recommend design guidelines for developing speech displays for telephone information systems.

User-Centered Label Design Guidelines for Child Restraint Systems

2017 ◽  
Vol 61 (1) ◽  
pp. 1399-1403 ◽  
Author(s):  
Chelsea Kramer ◽  
Shelley Kelsey ◽  
Christina Rudin-Brown ◽  
Robin Langerak ◽  
Andrea Scipione ◽  
...  
Keyword(s):  
Motor Vehicle ◽  
Evaluation Process ◽  
Design Guidelines ◽  
User Centered Design ◽  
Design Standards ◽  
Safety Standards ◽  
Car Seats ◽  
Design Concepts ◽  
Child Restraint ◽  
User Centered

Child Restraint Systems (CRS; car seats) are designed to prevent injuries in motor vehicle collisions. CRS misuse and installation errors are common and may seriously reduce or nullify safety benefits. Poorly designed labels and instructions contribute to CRS misuse, and CRS manufacturers are not held to an evidence-based label design standard. This paper describes a user-centered design (UCD) and evaluation process for infant/child convertible (rear-facing/forward-facing) CRS installation labels. The labels focused on two primary tasks: installing a CRS into a vehicle and securing a child into the CRS. The label design concepts were based on literature identifying primary areas for CRS misuse, Human Factors and UCD principles, product warning and label design standards, and current Canadian and US motor vehicle safety standards. A follow-up study will evaluate the reduction of CRS installation errors based on the hypothesized enhanced label usability and effectiveness.

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.

Usability Evaluation of Alzheimer’s mHealth Applications for Caregivers

2018 ◽  
Vol 62 (1) ◽  
pp. 503-507 ◽  
Author(s):  
Janetta Brown ◽  
Hyung Nam Kim
Keyword(s):  
The United States ◽  
Design Guidelines ◽  
User Centered Design ◽  
Card Sorting ◽  
App Development ◽  
Home Based ◽  
Healthcare Interventions ◽  
Home Based Care ◽  
Mhealth Apps ◽  
User Centered

As the sixth leading cause of death within the United States, Alzheimer’s disease affects over 15 million caregivers administering home-based care for loved ones having this illness. The rise in advocacy for mobile health (mHealth) applications (apps) to facilitate chronic disease management presents a tremendous platform for Alzheimer’s caregivers to utilize mHealth apps while administering care. Although mHealth apps serve as potential healthcare interventions, little is known regarding their usability. This study will advance knowledge on the apps’ usability and provide user-centered design guidelines for future app development. Keyword searches in Apple and Google App Stores yielded 43 Alzheimer’s apps. Card sorting then generated three levels of categories for app classification. Stratified random sampling produced a sample size of six apps selected for review. Lastly, a heuristic evaluation of the six sampled apps was conducted according to Nielsen’s ten usability heuristics. User-centered design guidelines were constructed to remedy problematic usability issues for the intended users of these apps.

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