Quality Of Human-computer Interaction Research Articles

Enhancing Perceived Value in Human-Computer Interaction: The Mediating Role of User Participation and the Moderating Role of Task Complexity

The study investigates the interplay of human-computer interaction (HCI) quality, user participation, and perceived value in technology interactions. The authors aim to elucidate the mediating role of user participation and the moderating effect of task complexity. Using structural equation modeling, we analyzed a diverse dataset of user feedback. The measurement and structural models are employed to determine the structural paths and predictive capability of the proposed model. Our findings indicate that user participation significantly mediates the impact of HCI quality on perceived value. Further, task complexity moderates these relationships, highlighting its role in enhancing or attenuating the perceived value of digital experiences. These findings provide insights for HCI design, emphasizing the need for user-centered systems that adapt to task complexity. Enhancing perceived value in technology interactions is essential, impacting user satisfaction, loyalty, and ultimately, the success of digital services.

Teachers' perceptions of interactive Islamic Prayer (iIP)

This paper explores from the teachers’ point of view how new interactive technology for teaching the Islamic Prayer in Primary Schools can enhance engagement and interaction in the classroom. An interesting aspect of the research in Human Computer Interaction (HCI) is that it focuses on both the human and computer perspectives. From the technological side, the focus is on how the computer hardware can improve the quality of HCI. Computer graphics for example, aims to ensure the graphics of a game is of a good standard so users will enjoy their game play, whilst operating systems are also considered in order to ensure good multiprocessing and to tune system response times to human interaction times. From the human side, HCI is primarily focused on the cognitive relationship with computers by ensuring the design is suitable for humans to operate successfully. The interactive Islamic Prayer (iIP) system designed for Xbox 360 Kinect with this specific goal in mind, and as an alternative to traditional learning methods. The participants for the research are Saudi Arabian primary school teachers in Jeddah, who currently teach the prayer using a traditional method. The teachers were experienced in all methods of learning (the controlled traditional method, and the iIP software) before making an informed decision on which method they prefer through a qualitative analysis of the participants teaching experiences. In addition, observations of each teaching session were organized to see how the methods engage the learners. The results show that learning by doing is extremely effective in helping the pupil’ practice, interact and remember the prayer movements.

The acceptance of the clinical photographic posture assessment tool (CPPAT)

BackgroundThere is a lack of evidence-based quantitative clinical methods to adequately assess posture. Our team developed a clinical photographic posture assessment tool (CPPAT) and implemented this tool in clinical practice to standardize posture assessment. The objectives were to determine the level of acceptance of the CPPAT and to document predictors as well as facilitators of and barriers to the acceptance of this tool by clinicians doing posture re-education.MethodsThis is a prospective study focussing on technology acceptance. Thirty-two clinician participants (physical therapists and sport therapists) received a 3–5 h training workshop explaining how to use the CPPAT. Over a three-month trial, they recorded time-on-task for a complete posture evaluation (photo - and photo-processing). Subsequently, participants rated their acceptance of the tool and commented on facilitators and barriers of the clinical method.ResultsTwenty-three clinician participants completed the trial. They took 22 (mean) ± 10 min (SD) for photo acquisition and 36 min ± 19 min for photo-processing. Acceptance of the CPPAT was high. Perceived ease of use was an indirect predictor of intention to use, mediated by perceived usefulness. Analysis time was an indirect predictor, mediated by perceived usefulness, and a marginally significant direct predictor. Principal facilitators were objective measurements, visualization, utility, and ease of use. Barriers were time to do a complete analysis of posture, quality of human-computer interaction, non-automation of posture index calculation and photo transfer, and lack of versatility.ConclusionThe CPPAT is perceived as useful and easy to use by clinicians and may facilitate the quantitative analysis of posture. Adapting the user-interface and functionality to quantify posture may facilitate a wider adoption of the tool.

AQUArIUM - A suite of software measures for HCI quality evaluation of ubiquitous mobile applications

Five characteristics for HCI evaluation in ubiquitous applications are selected.Twenty-four quality measures to evaluate these five characteristics are proposed.A theoretical and empirical validations were performed. Ubiquitous computing has changed the way users interact with technology. Its applications are everywhere, supporting users in everyday activities in a transparent way with little or no need for attention. To ensure the adoption of these applications, it is essential to assess the quality of the interaction with its users. To do that, measurements can be applied to obtain data about quality characteristics in a software product. In a previous study about quality characteristics and software measures for ubiquitous computing, we have identified a gap in the literature regarding software measures for evaluating essential quality characteristics in ubiquitous systems. Therefore, this paper proposes a suite of well-defined software measures (twenty-four in total), called AQUArIUM, to evaluate human-computer interaction (HCI) in ubiquitous applications for mobile devices. These measures address five quality characteristics of ubiquitous computing: Context-awareness, Mobility, Attention, Calmness and Transparency. The proposed suite was validated theoretically and empirically. The results showed not only that the suite is feasible, but also that it indicates specific problems of HCI quality, which are helpful in improving the evaluated ubiquitous mobile application.

Speech Classification Using Mfcc, Power Spectrum And Neural Networkand.

Speech signal carries rich emotional information except semantic information. Speech and emotion recognition improve the quality of human computer interaction and allow more easy to use interfaces for every level of user in software applications. Common emotion namely exclamatory, neutral and question mark were discussed and recognize through a propose frame work which combines of Mel Frequency Cepstrum Coefficients (MFCC) and Power spectrum are used for feature extraction and back propagation neural network are used for recognition of the emotional speech signals. This further will be used for transplanting that emotion in synthetic speech so that output quality of synthesis is improved.

Visual momentum redux

Over 25 years ago Woods (1984) introduced the concept of visual momentum: the extent to which an interface supports a practitioner in transitioning between various information-seeking activities that are required for understanding and exploring work domains. Increasing visual momentum requires the consideration of a range of “cognitive couplings” that span all levels of the interface: between multiple screens, within individual screens, and within a display on a screen. Although the concept has been well received, we believe that its potential to improve the quality of human computer interaction may be under-appreciated. Our purpose in this review is to provide a better understanding of visual momentum: to provide concrete and diverse examples of its successful application, to review empirical findings, to refine and expand the original design techniques that were proposed, and to integrate diverse terms that appear across different research communities.

Quality of human-computer interaction - results of a national usability survey of hospital-IT in Germany

BackgroundDue to the increasing functionality of medical information systems, it is hard to imagine day to day work in hospitals without IT support. Therefore, the design of dialogues between humans and information systems is one of the most important issues to be addressed in health care. This survey presents an analysis of the current quality level of human-computer interaction of healthcare-IT in German hospitals, focused on the users' point of view.MethodsTo evaluate the usability of clinical-IT according to the design principles of EN ISO 9241-10 the IsoMetrics Inventory, an assessment tool, was used. The focus of this paper has been put on suitability for task, training effort and conformity with user expectations, differentiated by information systems. Effectiveness has been evaluated with the focus on interoperability and functionality of different IT systems.Results4521 persons from 371 hospitals visited the start page of the study, while 1003 persons from 158 hospitals completed the questionnaire. The results show relevant variations between different information systems.ConclusionsSpecialised information systems with defined functionality received better assessments than clinical information systems in general. This could be attributed to the improved customisation of these specialised systems for specific working environments. The results can be used as reference data for evaluation and benchmarking of human computer engineering in clinical health IT context for future studies.

MVC+Prefetch Controller 패턴을 사용한 모바일 기기의 성능향상 기법

Current mobile devices have surpassed its boundaries as a more communication tool to a smart device which provides additional features. These features have supported the smart life of its users, but have reached its limit from low-performance processors and short-battery time. These issues can be resolved b implementing higher performing hardware, but they come with a burden of high cost. This paper introduces a new way of managing computing resources in a mobile device by enhancing the quality of human-computer interaction. The real-speed felt by users are mainly influenced by the time it takes form a user`s input to the device to display the completed result on the screen. Since the size of the screen for mobile devices are small, if the processor only fetch data to be used for displaying on screen, the time can be significantly reduced. MVC+Prefetch Controller pattern accomplished this goal by using the minimum amount of data from DB to fetch display and still manages to support high-speed data transfer to achieve seamless display. This idea has been realized by practice using Samsung mobile phone S8500, which demonstrated the superior performance on user`s perspective.

A comparison of neural networks for real-time emotionrecognition from speech signals A comparison of neural networks for real-time emotionrecognition from speech signals

Speech and emotion recognition improve the quality of human computer interaction and allow easier to use interfaces for every level of user in software applications. In this study, we have developed two different neural networks called emotion recognition neural network (ERNN) and Gram-Charlier emotion recognition neural network (GERNN) to classify the voice signals for emotion recognition. The ERNN has 128 input nodes, 20 hidden neurons, and three summing output nodes. A set of 97920 training sets is used to train the ERNN. A new set of 24480 testing sets is utilized to test the ERNN performance. The samples tested for voice recognition are acquired from the movies Anger Management and Pick of Destiny. ERNN achieves an average recognition performance of 100%. This high level of recognition suggests that the ERNN is a promising method for emotion recognition in computer applications. Furthermore, the GERNN has four input nodes, 20 hidden neurons, and three output nodes. The GERNN achieves an average recognition performance of 33%. This shows us that we cannot use Gram-Charlier coefficients to discriminate emotion signals. In addition, Hinton diagrams were utilized to display the optimality of ERNN weights.

The Psychometric Evaluation of Educational Intranets

A major determinant of the success of educational intranet sites is their usability. In addition to measures of task performance and navigation behavior, psychometric instruments are used to evaluate usability and the quality of human-computer interaction more generally. However, there is a lack of validated instruments for the evaluation of sites. The aim of the present study was to establish the psychometric properties of scales for measuring the quality of interaction with educational intranets. In two experiments, undergraduates ( n = 81 and n = 109, respectively) performed an information retrieval task using different versions of the same university intranet site. Psychometric properties of the instruments were analyzed. The quality of the scales is evaluated, recommendations for their use are given, and further research into the scales is outlined.

Five Psychometric Scales for Online Measurement of the Quality of Human-Computer Interaction in Web Sites

The use of a comprehensive set of psychometric instruments for measuring the quality of interaction in Web sites is proposed. Five existing scales for Web site evaluation, each measuring a key construct in human-computer interaction, were used together. The set of 5 scales demonstrated good distinguishability of factor structure, and all scales possessed adequate reliability. Evidence for validity of the scales was obtained, but additional work is necessary to establish the conditions under which these properties are best demonstrated. Aesthetic quality emerged as a separate scale that moderately correlated with other scales and level of task performance, highlighting the importance of aesthetics in interaction with Web pages. The results suggest the 5 scales can be used to measure the quality of interaction in Web sites for both monitoring and continual improvement of these sites.

Improving Information Search Using Natural Language and Direct Manipulation Tools in a Multimodal Interface

Clutter has an increasing impact on the quality of human-computer interaction, as more and more objects are represented on-screen. This study evaluated the usability of an existing, information-dense workspace, which places burdensome search requirements on its users. Direct manipulation is the standard method of search among multiple screen objects and has shown itself to be effective for point-and-act tasks. This study contrasts performance using natural language and multimodal interaction with this standard concept. The results reported here indicate that natural language is an effective search tool in a complex information workspace, because of its high level of specificity. However, regardless of its suggested merits, natural language is often criticized as being difficult to learn and utilize. The study reported here shows that users were easily able to combine modalities, natural language and direct manipulation, in a way predicted by the nature of screen clutter.

Taking SIGCHI to Amsterdam

When we started this column last year, we had fully intended on trying to corner some of the overseas SIGCHI membership and capture their views on key distinctions between North American and "other" brands of HCI work (both research and applied). This has proven difficult to do, not because differences do not exist, but because in most areas we are more similar than different. In broad terms we are all interested in improving the quality of human computer interaction, though we may focus in different areas when we measure such quality. For example, I still think it is safe to say that North Americans place more emphasis on minimizing user effort in applied HCI work, while Scandinavians place more effort on improving quality of work (which may mean something different than minimizing keystrokes). That this is not "news" is related to the fact that these different communities have been in communication for some time now. Scandinavians are better able to discuss GOMS models, and North Americans better able to discuss participatory design.