User Experiences in ThrowIt: A Natural UI for Sharing Objects between Mobile Devices

In this article, we are going to illustrate the GNSS raw measurement on the latest MediaTek platform in 2017 with Android-N or the later version of Android releases. With the opening of the raw measurement in the location framework of Android-N in 2016, the GNSS raw measurement and navigation message are much easier to be obtained on the mobile devices. The new interfaces on mobile device provide the possibility to develop some advanced applications on single device or between multiple devices. The kinds of application almost could not be done on the mobile devices in the past. The raw measurement also could be used for improving positioning accuracy with combining the cloud based services or small cluster of devices. Sub-meter level accuracy on mobile devices is also becoming possible. Since 2016, Google announced the first version of GNSS raw measurements API along with the ‘N’ release (Android-N). This allows the end users of Android-platform and APP developers finally have the opportunity to directly access the un-processed/un-filtered GNSS raw measurement. This information was used to be obtained in single-chip GNSS solution or geodetic purpose receiver. With the new API of GNSS raw measurement, the traditional tricks on signal-chip solution become possible on the mobile phone as well. The further applications and integration in the application level is also expected through combining the raw measurement with multiple sensor sources on mobile devices. With the MediaTek new designed chipset, the GNSS raw measurements from four GNSS constellations can be provided simultaneously, including GPS, GLONASS, BeiDou and Galileo. The more GNSS constellations mean more satellite visibility. In point of raw measurement, the device will have more chance to get the well-locked raw measurement, including code-phase and carrier-phase. The most straightforward possible improvement is on speeding up the convergence of RTK (Real-Time-Kinematic) application with more well-locked raw measurements from different constellations. The sub-meter level positioning accuracy is also becoming possible on mobile devices with the proper aiding information or algorithm. As a mobile chipset vendor, the raw measurement API is not only for the positioning or application purpose. Furthermore, it provides a unified interface to collect data for examining the quality of hardware design on mobile devices. Especially, there are multiple radio devices coexisting with GNSS RF devices. Any improper hardware design might harm the measurement quality of GNSS signal. Before Android-N, the manufactory of mobile devices only can qualify the GNSS performance for the final positioning result in cheap way. After Android-N, this new API provides a new way to allow the manufactory has the chance to aware the hardware design quality in really early stage and have the chance to improve it if necessary. We are going to share what kind of benefits can be obtained. In summary, we will illustrate some of possible applications by using the new API on single mobile or between multiple devices on the MediaTek latest platform. The corresponding concepts and results will be shared. The possible ways to validate the design of hardware will also be discussed.

A comparison of mobile form controls for different tasks

An end-use’s experience of any software is typically influenced by the interface presented by the application to the user. For Mixed Reality Environments such as Augmented and Virtual Reality, the user interface is highly visual, and a poor interface can significantly degrade the user experience. Adequate attention is required when designing or creating interfaces and user experience within Mixed Reality Environments as traditional interface design goals and specifications often need to be adjusted. Furthermore, for mixed reality environments on Mobile devices there are additional interface constraints and considerations that would considerably improve the user experience when properly addressed. This research paper discusses the evolution(s) of user interface(s) and user experience of Augmented and Virtual Reality applications on Mobile devices and contributes a framework for improving user interfaces and experience when using Mixed Reality Environments.

Controlling assistive robots can be challenging for some users, especially those lacking relevant experience. Augmented Reality (AR) User Interfaces (UIs) have the potential to facilitate this task. Although extensive research regarding legged manipulators exists, comparatively little is on their UIs. Most existing UIs leverage traditional control interfaces such as joysticks, Hand-Held (HH) controllers and 2D UIs. These interfaces not only risk being unintuitive, thus discouraging interaction with the robot partner, but also draw the operator’s focus away from the task and towards the UI. This shift in attention raises additional safety concerns, particularly in potentially hazardous environments where legged manipulators are frequently deployed. Moreover, traditional interfaces limit the operators’ availability to use their hands for other tasks. Towards overcoming these limitations, in this article, we provide a user study comparing an AR Head-Mounted Display (HMD) UI we developed for controlling a legged manipulator against off-the-shelf control methods for such robots. This user study involved 27 participants and 135 trials, from which we gathered over 405 completed questionnaires. These trials involved multiple navigation and manipulation tasks with varying difficulty levels using a Boston Dynamics’s Spot, a 7 df Kinova robot arm and a Robotiq 2F-85 gripper that we integrated into a legged manipulator. We made the comparison between UIs across multiple dimensions relevant to a successful human–robot interaction. These dimensions include cognitive workload, technology acceptance, fluency, system usability, immersion and trust. Our study employed a factorial experimental design with participants undergoing five different conditions, generating longitudinal data. Due to potential unknown distributions and outliers in such data, using parametric methods for its analysis is questionable, and while non-parametric alternatives exist, they may lead to reduced statistical power. Therefore, to analyse the data that resulted from our experiment, we chose Bayesian data analysis as an effective alternative to address these limitations. Our results show that AR UIs can outpace HH-based control methods and reduce the cognitive requirements when designers include hands-free interactions and cognitive offloading principles into the UI. Furthermore, the use of the AR UI together with our cognitive offloading feature resulted in higher usability scores and significantly higher fluency and Technology Acceptance Model scores. Regarding immersion, our results revealed that the response values for the AR Immersion questionnaire associated with the AR UI are significantly higher than those associated with the HH UI, regardless of the main interaction method with the former, i.e., hand gestures or cognitive offloading. Derived from the participants’ qualitative answers, we believe this is due to a combination of factors, of which the most important is the free use of the hands when using the HMD, as well as the ability to see the real environment without the need to divert their attention to the UI. Regarding trust, our findings did not display discernible differences in reported trust scores across UI options. However, during the manipulation phase of our user study, where participants were given the choice to select their preferred UI, they consistently reported higher levels of trust compared to the navigation category. Moreover, there was a drastic change in the percentage of participants that selected the AR UI for completing this manipulation stage after incorporating the cognitive offloading feature. Thus, trust seems to have mediated the use and non-use of the UIs in a dimension different from the ones considered in our study, i.e., delegation and reliance. Therefore, our AR HMD UI for the control of legged manipulators was found to improve human–robot interaction across several relevant dimensions, underscoring the critical role of UI design in the effective and trustworthy utilisation of robotic systems.

Evaluation of Premium Ultrasound Systems With Sonographers: How Comparative Usability Testing Can Reveal Human Factors Issues Prior to Errors in the Exam Room1

The powerful digital forensics tool cellebrite universal forensics extraction device (UFED) extracts and analyzes mobile device data, helping investigators solve criminal and cybersecurity cases. Advanced methods and algorithms allow Cellebrite UFED to recover data from erased or obscured devices. Cellebrite UFED can pull data from call logs, texts, emails, and social media, providing valuable evidence for investigations. The use of smartphones and tablets in personal and professional settings has spurred the development of mobile device forensics. The intuitive user interface speeds up data extraction and analysis, revealing crucial information. It can decrypt encrypted data, recover deleted files, and extract data from multiple devices. The sector's best data extraction functionality, Cellebrite UFED, helps forensic analysts gather crucial evidence for investigations. Legal and ethical considerations are crucial in mobile device forensics. Legal considerations include allowing access to data, protecting privacy, and adhering to chain of custody protocols. Ethics include transparency, defamation, and information exploitation protection. Using Cellebrite UFED, researchers can navigate complex data on mobile devices more efficiently and precisely. Artificial intelligence (AI) and machine learning (ML) algorithms may automate data extraction in future tools. Examiners must train, maintain, and establish clear protocols for using Cellebrite UFED in forensic investigations.

Automotive user interfaces have been designed within the limitations of driving activity. Therefore, there has been a lack of infotainment solutions that target the front-seat passenger as another car occupant with his/her own needs, interests and capabilities. This research is built on the motivation of empowering the front-seat passengers in luxury car journeys through infotainment systems. It handles front-seat passenger’s empowerment through the investigation of how a pleasant and luxury infotainment experience is manifested via new functionalities and interactions. This research tackles the challenge of understanding how these unprecedented infotainment solutions will add to front-seat passenger’s travel experience with experience prototyping through VR simulation. It follows the ‘research through design approach’ by i) presenting a design proposal for the front-seat passenger infotainment system, ii) developing a VR simulation to communicate the infotainment system interactions within a travel scenario in an immersive way, and iii) conducting experience prototyping study where participants reflect on the design proposal (VR simulation) through administration of mixed data collection methods including semantic differential questionnaires and semi-structured interviews. To achieve the above-mentioned objectives, the research makes use of an extensive literature on User Experience (UX)-Human Computer Interaction (HCI), Automotive UX, Luxury Marketing, and Simulation. The synthesis of the UX and marketing literature enables deconstruction of pleasant and luxury user experience into a set of qualities/metrics to be referred in design and design evaluation. The synthesis of aesthetics of interaction studies in the UX literature helps to categorize the diverse aspects of the infotainment system. The analysis of the academic and industrial efforts to empower front-seat passengers through automotive user interfaces is used for identification of promising technologies and trends for the infotainment system. The literature review on experience prototyping with VR constitutes a reference in prototyping-related decisions and using VR as part of the user study. The thesis finally presents the analysis of the experience prototyping study through i) the quantitative representation and discussion of the diverse aspects of the infotainment system (functionalities and interaction aesthetics) that play role in delivery of the various qualities of luxury experience, ii) structured analysis of the participants’ suggestions for the system with specification of the underlying motivations and iii) development of a framework that conceptualizes the front-seat passengers’ changing role and relations with the infotainment system. Based on these investigations of the link between the infotainment system aspects and the participants’ expectations/concerns, the research concludes with key design considerations and recommendations for the future (luxury) front-seat passenger-oriented infotainment system solutions. It also presents recommendations for integration of VR simulation into future car HMI appraisals by reflecting on the experience prototyping study conducted as part of the PhD research.

Resource Sharing in Mobile Cloud-computing with Coap

A novel software application, Blip, was created to combine and display diabetes data from multiple devices in a uniform, user-friendly manner. The objective of this study was to test the usability of this application by adults and caregivers of children with type 1 diabetes (T1D). Patients (n = 35) and caregivers of children with T1D (n = 30) using an insulin pump for >1 year ± CGM were given access to the software for 3 months. Diabetes management practices and the use of diabetes data were assessed at baseline and at study end, and feedback was gathered in a concluding questionnaire. At baseline, 97% of participants agreed it was important for patients to know how to interpret glucose data. Most felt that clinicians and patients should share the tasks of reviewing data, finding patterns, and making changes to their insulin plans. However, despite valuing shared responsibility, at baseline, 43% of participants never downloaded pump data, and only 9% did so at least once per month. At study end, 72% downloaded data at least once during the 3-month study, and 38% downloaded at least once per month. Regarding the software application, participants liked the central repository of data and the user interface. Suggestions included providing tools for understanding and interpreting glucose patterns, an easier uploading process, and access with mobile devices. Collaboration between developers and researchers prompted iterative, rapid development of data visualization software and improvements in the uploading process and user interface, which facilitates clinical integration and future clinical studies.

An alternative solution for Indosport, considering the increasingly advanced smartphone development and also followed by the rapid growth of its users in Indonesia. The purpose of this study project is to produce a product in the form of a user interface (UI) and user experience (UX) design in helping to realize targeted mobile applications and not forgetting to apply the principles of visual communication design namely unity and variety, hierarchy, contrast, proportion and balance. The UI and UX design methods go through several stages of work in sequence: pre-production process, production process, and post-production. This design results in UI and UX designs that are equipped with user flow, interface designs, illustrations and prototypes. The main page of the Indosport mobile application is News, Activity, Calendar, and Profile which later on these pages there are several features that are different from the previous page. The making of this UI uses several visual languages such as medium close up, full shot, long shot, close up and medium long shot in the image section contained in the article as well as the depiction of field styles used to almost all visual UI elements. Using several principles in design, namely time to learn, speed of performance, rate of errors by users, retention over time, and subjective satisfaction. The resulting design forms will be distributed directly to the Research and Development division and the IT division from Indosport to be made a native.

We present two experiments comparing selection techniques for low-cost mobile VR devices, such as Google Cardboard. Our objective was to assess the feasibility of computer vision tracking on mobile devices as an alternative to common head-ray selection methods. In the first experiment, we compared three selection techniques: air touch, head ray, and finger ray. Overall, hand-based selection (air touch) performed much worse than ray-based selection. In the second experiment, we compared different combinations of selection techniques and selection indication methods. The built-in Cardboard button worked well with the head ray technique. Using a hand gesture (air tap) with ray-based techniques resulted in slower selection times, but comparable accuracy. Our results suggest that camera-based mobile tracking is best used with ray-based techniques, but selection indication mechanisms remain problematic.

Current authoring environments provide the possibility of developing user interfaces with limited adaptation capacities. The most widely adopted tools follow the responsive design approach and allow developers to obtain user interfaces that can adapt mainly to the screen size and orientation. We present a solution able to support development of user interfaces able to adapt to the various types of contextual events (that can be related to users, devices, environments, and social relationships), with the added possibility of distributing the user interface elements across multiple devices. The context-dependent behavior is modelled through trigger / action rules, and can even be applied to Web applications that were not originally designed to be context-aware. This paper describes the design and main features of the novel authoring environment and reports on a first user study.

The popular view of software engineering focuses on managing teams of people to produce large systems. This paper addresses a different angle of software engineering, that of development for re-use and portability. We consider how an essential part of most software products - the user interface - can be successfully engineered so that it can be portable across multiple platforms and on multiple devices. Our research has identified the structure of the problem domain, and we have filled in some of the answers. We investigate promising solutions from the model-driven frameworks of the 1990s, to modern XML-based specification notations (Views, XUL, XIML, XAML), multi-platform toolkits (Qt and Gtk), and our new work, Mirrors which pioneers reflective libraries. The methodology on which Views and Mirrors is based enables existing GUI libraries to be transported to new operating systems. The paper also identifies cross-cutting challenges related to education, standardization and the impact of mobile and tangible devices on the future design of UIs. This paper seeks to position user interface construction as an important challenge in software engineering, worthy of ongoing research.

— User interface is a term used to describe the appearance of a computer or equipment that the user interacts with. User experience isn't just what consumers see; This can not only provide a design that appeals to the eye, but can also explain why the design is the way it is, a design that can make users feel comfortable when achieving their goals when utilizing the services provided by websites and applications. The purpose of this study is to find out whether the user centered design approach has a positive impact on the analysis and design of user interface and user experience on the Inspire Portal of Sam Ratulangi University.. Researchers have received the final results, namely, the mean value in the attractiveness aspect which was initially -1.61 the value became 0.71, for the second aspect, namely perspicuity (clarity) the initial value -1.72 rose to 0.68, and for the next aspect, namely the third efficiency value before improvement -1.67 to 0.61, and the fourth aspect dependability (accuracy) value before improvement -1.64 and after improvement the value became 0.67, The fifth aspect is stimulation before the improvement of the mean value of -1.64 after improvement to 0.58 and for the last aspect, namely novelty before improvement the value is -1.69 and after improvement the value becomes 0.64. The measurement tool in this study uses a user experience questionnaire, and for the final results of the benchmark comparison there are four aspects that are below average, namely attractiveness, efficiency, stimulation, and novelty. Key words — UNSRAT INSPIRE Portal; User Centered Design Methods; User Experience; User Experience Questionnaire; User Interface. Abstrak — User interface adalah istilah yang digunakan untuk menggambarkan tampilan komputer atau peralatan yang berinteraksi dengan pengguna. Pengalaman pengguna bukan hanya apa yang dilihat konsumen; Ini tidak hanya dapat memberikan desain yang menarik bagi mata, tetapi juga dapat menjelaskan mengapa desainnya seperti itu, desain yang dapat membuat pengguna merasa nyaman ketika mencapai tujuan mereka ketika memanfaatkan layanan yang disediakan oleh situs web dan aplikasi. Tujuan dari penelitian ini adalah untuk mengetahui apakah pendekatan user centered design memberikan dampak positif terhadap analisis dan desain user interface dan user experience pada Portal Inspire Universitas Sam Ratulangi. Peneliti telah menerima hasil akhir yaitu, nilai mean pada aspek attractiveness (daya tarik) yang awalnya -1.61 nilainya menjadi 0.71, untuk aspek yang kedua yaitu perspicuity (kejelasan) nilai awalnya -1.72 naik menjadi 0.68, serta untuk aspek berikutnya yaitu yang ketiga efficiency (efisiensi) nilai sebelum perbaikan -1.67 menjadi 0.61, dan aspek yang keempat dependability (ketepatan) nilai sebelum perbaikan -1.64 dan setelah perbaikan nilainya menjadi 0.67, aspek yang kelima yaitu stimulation (stimulasi) sebelum dilakukan perbaikan nilai meannya -1.64 setelah dilakukan perbaikan menjadi 0.58 dan untuk aspek yang terakhir yaitu novelty (kebaruan) sebelum perbaikan nilainya -1.69 dan setelah dilakukan perbaikan nilainya menjadi 0.64. Alat pengukuran dalam penelitian ini menggunakan user experience questionnaire, dan untuk hasil akhir dari comparison benchmarknya ada empat aspek yang dibawah rata-rata yaitu attractiveness, efficiency, stimulation, dan novelty. Kata kunci — Antarmuka Pengguna; Kuisioner Pengalaman Pengguna; Metode Desain yang Berpusat pada Pengguna; Portal INSPIRE UNSRAT; Pengalaman Pengguna.

An empirical study on user experience evaluation of VR interface in digital museums