Academic literature on the topic 'Web-based virtual walking challenge'
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Journal articles on the topic "Web-based virtual walking challenge"
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Griffin, Brent, and Jessy Grizzle. "Nonholonomic virtual constraints and gait optimization for robust walking control." International Journal of Robotics Research 36, no. 8 (May 23, 2017): 895–922. http://dx.doi.org/10.1177/0278364917708249.
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A key challenge in robotic bipedal locomotion is the design of feedback controllers that function well in the presence of uncertainty, in both the robot and its environment. This paper addresses the design of feedback controllers and periodic gaits that function well in the presence of modest terrain variation, without over-reliance on perception and a priori knowledge of the environment. Model-based design methods are introduced and subsequently validated in simulation and experiment on MARLO, an underactuated three-dimensional bipedal robot that is of roughly human size and is equipped with an inertial measurement unit and joint encoders. Innovations include an optimization method that accounts for multiple types of disturbances and a feedback control design that enables continuous velocity-based posture regulation via nonholonomic virtual constraints. Using a single continuously defined controller taken directly from optimization, MARLO traverses sloped sidewalks and parking lots, terrain covered with randomly thrown boards, and grass fields, all while maintaining average walking speeds between 0.9 and 0.98 m/s and setting a new precedent for walking efficiency in realistic environments.
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Wagner, Stefan R., Rasmus R. Gregersen, Line Henriksen, Ellen-Margrethe Hauge, and Kresten K. Keller. "Smartphone Pedometer Sensor Application for Evaluating Disease Activity and Predicting Comorbidities in Patients with Rheumatoid Arthritis: A Validation Study." Sensors 22, no. 23 (December 2, 2022): 9396. http://dx.doi.org/10.3390/s22239396.
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Smartphone-based pedometer sensor telemedicine applications could be useful for measuring disease activity and predicting the risk of developing comorbidities, such as pulmonary or cardiovascular disease, in patients with rheumatoid arthritis (RA), but the sensors have not been validated in this patient population. The aim of this study was to validate step counting with an activity-tracking application running the inbuilt Android smartphone pedometer virtual sensor in patients with RA. Two Android-based smartphones were tested in a treadmill test-bed setup at six walking speeds and compared to manual step counting as the gold standard. Guided by a facilitator, the participants walked 100 steps at each test speed, from 2.5 km/h to 5 km/h, wearing both devices simultaneously in a stomach pouch. A computer automatically recorded both the manually observed and the sensor step count. The overall difference in device step counts versus the observed was 5.9% mean absolute percentage error. Highest mean error was at the 2.5 km/h speed tests, where the mean error of the two devices was 18.5%. Both speed and cadence were negatively correlated to the absolute percentage error, which indicates that the greater the speed and cadence, the lower the resulting step counting error rate. There was no correlation between clinical parameters and absolute percentage error. In conclusion, the activity-tracking application using the inbuilt Android smartphone pedometer virtual sensor is valid for step counting in patients with RA. However, walking at very low speed and cadence may represent a challenge.
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Videla-Reyes, Ronnie, and Claudio Aguayo. "Pedagogy of uncertainty." Pacific Journal of Technology Enhanced Learning 4, no. 1 (February 8, 2022): 29–30. http://dx.doi.org/10.24135/pjtel.v4i1.147.
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Educators around the world are facing the challenges and opportunities of 21st Century education, such as the COVID-19 pandemic, STEAM education, and the rise of digital immersive technologies presenting a promising field for the development of new ways to maximize the learning experience (Bakker, Cai & Zenger, 2021) The integration of science, technology, engineering, art and mathematics (STEAM) offers an approach to educational design based on curricular integration and learning by doing with analog and virtual technologies (Quigley et al., 2020). In turn, STEAM promotes important pedagogical changes that encourage the development of new skills focused on collaborative work, inquiry and creativity in the face of a challenge or problem to be solved, as well as optimal sensorimotor deployment through haptic and visual perception when using emerging digital immersion technologies such as virtual and augmented reality (Videla-Reyes, Aguayo & Veloz, 2021). All these changes lead to a new framework of pedagogical action based on uncertainty, since they are unfamiliar or unknown in the field of traditional education.
Based on the above, we propose here the idea of a ’pedagogy of uncertainty’, which can be read in light of the latest and unpredictable changes that 21st Century education is experiencing due to the COVID-19 pandemic, the emergence of technological tools and unfamiliar virtual and online platforms that teachers and students had to learn and use during the march of the virus. The approach that we suggest here is based on the potential of STEAM educational environment design that focuses on providing signs or patterns of an emerging world, unlike traditional teaching methods in which the path to which students should arrive is already laid down in advance. From a STEAM educational design approach, the teacher and her/his students lay down a path in walking together, a motto used by the enactive approach to cognition that considers "cognition as embodied action that is always oriented towards something absent: on the one hand, there is always a next step for the system in its perceptually guided action; for the rest, the acts of the system are always directed towards situations that are not yet in act” (Varela, Thompson & Rosch, 1991, p.238). In this presentation, we explore the notion of pedagogy of uncertainty in the light of enactivism, based on theoretical and empirical evidence about how teachers and students deal with an uncertain world by actively participating in integrated educational environments based on learning by doing approaches (Abrahamson, Dutton & Bakker, 2021). In particular, we make special reference to how teachers can make their students learn from clues, impoverished traces, or traces of information available within their learning environments to solve a challenge or problem, to the extent that they investigate, create, manufacture and/or actively participate in technology inside and beyond the classroom.
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Chiu, Hsiao-Hui, Pi-Ching Wei, Man-Ling Lin, Yi-Chun Chen, Shu-Yuan Chou, Yu-Cheng Yao, and Ying-Ying Yang. "Current Status and Challenge for Implementation in Clinical Application of Augmented Reality in Orthopedics Department at a Medical Center." International Journal of Studies in Nursing 6, no. 3 (September 22, 2021): 38. http://dx.doi.org/10.20849/ijsn.v6i3.923.
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With technical development, artificial intelligence (AI) has been actively involving in the healthcare industry. Augmented reality (AR) is an interactive experience with the combination of virtual objects and a real-world environment, and the objects reside in the environment of the real world through computer-generated images for the purpose to enhance perceptual effects, which can be applied in the fields of medical education and clinical practice. Researchers have found that learning motives and interests may be raised by AR. At a medical center, the inter-specialty team from the Teaching Department and Rehabilitation Department jointly developed an AR Medical Education App, which involves 44 muscle strength and walking exercises, including 6 upper limb movements, 28 lower limb exercises, and 10 cardiorespiratory exercises. Various exercise packages can be designed by health caregivers based on patient’s needs in exercise. The Orthopedics Ward applied it in the respiration training for patients who underwent spinal surgery, preventing respiratory comorbidities. The improved postoperative pulmonary function has been found when compared with that before surgery, with statistical significance. Respiration, upper and lower limbs exercises were persistently performed in patients who underwent spinal surgery, which also has been incorporated in routine nursing care to add diverse options of patient education materials for nursing personnel. In the future, aspects that required further efforts include: expanded software equipment, simplified operation mode, increased user-friendly features for equipment, and expended plentifulness of contents.
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Gong, Jian, Xinyu Zhang, Yuanjun Huang, Ju Ren, and Yaoxue Zhang. "Robust Inertial Motion Tracking through Deep Sensor Fusion across Smart Earbuds and Smartphone." Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies 5, no. 2 (June 23, 2021): 1–26. http://dx.doi.org/10.1145/3463517.
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IMU based inertial tracking plays an indispensable role in many mobility centric tasks, such as robotic control, indoor navigation and virtual reality gaming. Despite its mature application in rigid machine mobility (e.g., robot and aircraft), tracking human users via mobile devices remains a fundamental challenge due to the intractable gait/posture patterns. Recent data-driven models have tackled sensor drifting, one key issue that plagues inertial tracking. However, these systems still assume the devices are held or attached to the user body with a relatively fixed posture. In practice, natural body activities may rotate/translate the device which may be mistaken as whole body movement. Such motion artifacts remain as the dominating factor that fails existing inertial tracing systems in practical uncontrolled settings. Inspired by the observation that human heads induces far less intensive movement relative to the body during walking, compared to other parts, we propose a novel multi-stage sensor fusion pipeline called DeepIT, which realizes inertial tracking by synthesizing the IMU measurements from a smartphone and an associated earbud. DeepIT introduces a data-driven reliability aware attention model, which assesses the reliability of each IMU and opportunistically synthesizes their data to mitigate the impacts of motion noise. Furthermore, DeepIT uses a reliability aware magnetometer compensation scheme to combat the angular drifting problem caused by unrestricted motion artifacts. We validate DeepIT on the first large-scale inertial navigation dataset involving both smartphone and earbud IMUs. The evaluation results show that DeepIT achieves multiple folds of accuracy improvement on the challenging uncontrolled natural walking scenarios, compared with state-of-the-art closed-form and data-driven models.
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Ahsan, Mohammed, Rishav Drolia, and Ananda Kumar S. "Smart Walking Stick for the Visually Challenged." Indonesian Journal of Electrical Engineering and Computer Science 12, no. 3 (December 1, 2018): 1282. http://dx.doi.org/10.11591/ijeecs.v12.i3.pp1282-1288.
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<span>Internet of things mixed with Radio Frequency identification generation permit a whole new context for whole new devices that are capable of combining their bodily and virtual existences. Radio Frequency identification, placing an identification label into every object, allows a clever device to get information, both actual-time or digital-connected statistics, without any physical touch. Information retrieved from such an object, turns it right into a capacity smart object, clearly able to car pick out itself and, if protection problems are certainly handled, maximum in all likelihood capable to connect to the worldwide net. This way, one can get a ubiquitous framework to get admission to, display and manipulate any of these smart items over a web of linked things. RFID tags in scientific context enable a fast and specific identification of each clever entity, permitting a ubiquitous and brief get admission to personal fitness data over an internet of factors [1-2]. People have been struggling with sicknesses weird. Visually challenged human beings are blind people who are very common and difficult to cope with of their way. The principle aim of this project is to aid the visually challenged human beings with a better navigation device. This clever strolling stick is greater state-of-the-art device with many embedded features.</span>
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Danielson, Helen E., and Sandra B. Wilson. "Interactive Web-based Plant Identification and Use." HortScience 40, no. 4 (July 2005): 1133E—1133. http://dx.doi.org/10.21273/hortsci.40.4.1133e.
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University of Florida's Department of Environmental Horticulture offers undergraduate and graduate courses at seven locations throughout the state. To ensure students have access to a sufficient variety of classes, many courses are delivered by distance education. Distance education has significantly expanded student enrollment while unifying lecture content and minimizing duplication of faculty resources. However, delivering hands-on laboratory portions of courses continues to be a challenge, thus necessitating the need for web-based supplemental learning tools. An interactive, web-based tour of the 1-acre Indian River Research and Education Center (IRREC) Teaching Garden was created, allowing students at all distance education sites to learn similar plant material and landscape design principles. The virtual tour was developed by converting digital panoramic images of the landscape to movie files. The movies are navigated using a computer mouse, and plants within the tour are hyperlinked to information sheets highlighting plant characteristics. Although the website was initially developed for a Florida native landscaping course, it can be utilized in other plant identification and landscape courses, as well as by those who wish to virtually explore the garden.
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Franke, Martin, Ingo Keller, and Thomas Schlegel. "Enabling Cloud-Based and Personalized Sensors in Assisted Living Environments." International Journal of Organizational and Collective Intelligence 4, no. 4 (October 2014): 1–23. http://dx.doi.org/10.4018/ijoci.2014100101.
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In this work, the authors combine the field of cloud computing with assisted living to improve activity classification. The proposed system addresses the challenge of enabling heterogeneous, cloud-based sensors in domestic environments. With a semantic and model-based approach, the authors seamlessly integrate web services as virtual sensors and, therefore, increasing the accuracy of human activity classifiers. They solve the most important compelling issue of interoperability, by using generated wrapper classes and semantically unify all heterogeneous sensor events within the system. Their approach is evaluated with a test installation by means of the requirements for Sensor Web Infrastructures combined with the one for assisted living environments.
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Hao, Zikang, Xiaodan Zhang, and Ping Chen. "Effects of Different Exercise Therapies on Balance Function and Functional Walking Ability in Multiple Sclerosis Disease Patients—A Network Meta-Analysis of Randomized Controlled Trials." International Journal of Environmental Research and Public Health 19, no. 12 (June 11, 2022): 7175. http://dx.doi.org/10.3390/ijerph19127175.
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The objective of this research is to assess the effects of seven different exercise therapies (aquatic exercise, aerobic exercise, yoga, Pilates, virtual reality exercise, whole-body vibration exercise, and resistance exercise) on the balance function and functional walking ability of multiple sclerosis disease patients. Materials and Methods: The effects of different exercise interventions on the balance function and functional walking ability in people with multiple sclerosis were assessed by searching five databases: PubMed, Embase, Cochrane Library, Web of Science, and CNKI; only randomized controlled trials were included. The included studies were assessed for risk of bias using the Cochrane assessment tool. Results: The RCTs were collected between the initial date of the electronic databases’ creation and May 2022. We included 31 RCTs with 904 patients. The results of the collected data analysis showed that yoga can significantly improve patients’ BBS scores (SUCRA = 79.7%) and that aquatic exercise can significantly decrease patients’ TUG scores (SUCRA = 78.8%). Conclusion: Based on the network meta-analysis, we suggest that although each type of exercise is useful, yoga, virtual reality training, and aerobic training are more effective in improving the balance function of people with MS; aquatic exercise, virtual reality training, and aerobic training are more effective in improving the functional walking ability of people with MS.
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Patham, Bhargavi, and Martha Guerra. "Web Based Interactive Tutorials in Obstetrics and Gynecology." Donald School Journal of Ultrasound in Obstetrics and Gynecology 3, no. 4 (2009): 7–10. http://dx.doi.org/10.5005/jp-journals-10009-1028.
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Abstract The challenge of integrating basic science and clinical knowledge contents has become an educational imperative at Paul L Foster School of Medicine clinical presentation based curriculum. During the first two years of our curriculum, students are introduced to clinical applications of basic science knowledge. For better understanding and appreciation of the important links between the basic science principles and clinical medicine, students return to basic science topics. To support such a progression of students' knowledge and skills, the curriculum should allow and support individual learning. Interactive tutorials created by authors of different backgrounds and expertise facilitate clinical application of basic science knowledge and provide multiple pathways in learning and inductive reasoning. Web based learning modules do not supplement traditional lectures, small groups sessions and team based learning activities, but they may significantly enrich students' learning experience. Physical and content boundaries between basic science and clinical departments are sometimes difficult to breach. In virtual space, thematically organized modules and collective approach of interdisciplinary teaching teams allow full integration of core content. This concept of distance learning contributes to educational continuity, longitudinal experience and educational mobility.
Dissertations / Theses on the topic "Web-based virtual walking challenge"
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(9812249), David Lapere. "‘Children off the couch’ : the efficacy of a curriculum-supported, web-based walking challenge to increase children’s participation in physical activity and improve psychosocial correlates of physical activity." Thesis, 2012. https://figshare.com/articles/thesis/_Children_off_the_couch_the_efficacy_of_a_curriculum-supported_web-based_walking_challenge_to_increase_children_s_participation_in_physical_activity_and_improve_psychosocial_correlates_of_physical_activity/13437155.
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Background. This thesis reports upon research that utilized qualitative and quantitative methods for the design and then subsequent evaluation of a primary school curriculum package that integrated the core concepts of the 10,000 Steps - Workplace Challenge with the existing syllabi of the Queensland education system. This research involved two inter-related studies: the first, - a feasibility study; the second, - a quasi-experimental efficacy study.
Books on the topic "Web-based virtual walking challenge"
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Kim, Jihoon. Documentary's Expanded Fields. Oxford University Press, 2022. http://dx.doi.org/10.1093/oso/9780197603819.001.0001.
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Documentary's Expanded Fields: New Media and the Twenty-First-Century Documentary offers a theoretical mapping of contemporary non-standard documentary practices enabled by the proliferation of new digital imaging, lightweight and non-operator digital cameras, multiscreen and interactive interfaces, and web 2.0 platforms. These emergent practices encompass digital data visualizations, digital films that experiment with the deliberate manipulation of photographic records, documentaries based on drone cameras, GoPros, and virtual reality (VR) interfaces, documentary installations in the gallery, interactive documentary (i-doc), citizens' vernacular online videos that document scenes of the protests such as the Arab Spring, the Hong Kong Protests, and the Black Lives Matter Movements, and new activist films, videos, and archiving projects that respond to those political upheavals. Building on the interdisciplinary framework of documentary studies, digital media studies, and contemporary art criticism, Jihoon Kim investigates the ways in which these practices both challenge and update the aesthetic, epistemological, political, and ethical assumptions of traditional film-based documentary. Providing a diverse range of case studies that classify and examine these practices, the book argues that the new media technologies and the experiential platforms outside the movie theater, such as the gallery, the world wide web, and social media services, expand five horizons of documentary cinema: image, vision, dispositif, archive, and activism. This reconfiguration of these five horizons demonstrates that documentary cinema in the age of new media and platforms, which Kim labels as the “twenty-first-century documentary,” dynamically changes its boundaries while also exploring new experiences of reality and history in times of the contemporary crises across the globe, including the COVID-19 pandemic.
Book chapters on the topic "Web-based virtual walking challenge"
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Stein, David S., Hilda R. Glazer, and Constance E. Wanstreet. "The Virtual University." In Web-Based Education, 51–58. IGI Global, 2010. http://dx.doi.org/10.4018/978-1-61520-963-7.ch004.
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By offering self-designed, guided independent study, for-profit virtual universities began as alternatives to traditional graduate education that emphasized full-time study and ignored the life demands of adult students. However, through the process of gaining accreditation, recognition by the academy, and acceptance in themarketplace, virtual universities now more closely resemble traditional institutions. Their challenge to traditional academic practices predominately rests with the use of electronic tools for learning and the access virtualuniversities provide thousands of part-time learnerspursuing doctoral degrees.
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El Houssaini, Charafeddine, Mahmoud Nassar, and Abdelaziz Kriouile. "A Governance Based Architecture for Enterprise Cloud Computing Adoption." In Web-Based Services, 668–82. IGI Global, 2016. http://dx.doi.org/10.4018/978-1-4666-9466-8.ch029.
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In the trendy wide adoption of the cloud computing solutions, the relevant challenge has changed from the opportunities and capabilities offered to the governance issues when moving to this new computing paradigm. Since, the enterprises are considerably interested about keeping control even in the virtual environment. To fulfill this objective an architectural approach is introduced: Governance-based Architecture for Enterprise Cloud Computing Adoption. As an alternative to the big organism's Cloud Computing Reference Architecture (CCRA) which is provider-centric, the proposed architecture is consumer-centric and tries to deal with the enterprise requirements and needs. The core architecture is articulated in seven modules which are enveloped by a Unified Cloud Service Interface.
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Edwards, Patricia, Mercedes Rico, Eva Dominguez, and J. Enrique Agudo. "Second Language E-Learning and Professional Training with Second Life®." In Web-Based Education, 867–87. IGI Global, 2010. http://dx.doi.org/10.4018/978-1-61520-963-7.ch060.
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Web 2.0 technologies are described as new and emerging for all fields of knowledge, including academia. Innovativee-learning formats like on-demand video, file sharing, blogs, Wikis, podcasting and virtual worlds are gaining increasing popularity among educators and students due to their emphasis on flexible, collaborative and community-building features, a promising natural channel for the social constructivist learning theory. This chapter addresses the application of e-learning in university degree programs based on exploiting the practical, intensive and holistic aspects of Second Life® (SL™). Although the specific framework dealt with is English as a foreign language, it seems feasible to assume that the learning processes are equally transferable to other disciplines. In light of the aforementioned premises, the outlook of e-learning 2.0 approaches require action research and shared experiences in order to back up or challenge the claims andexpectations of the academic community concerned withbest practices in education.
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Lee, Choongseok, Woojong Suh, and Heeseok Lee. "A Customer Analysis-Based Methodology for Improving Web Business Systems." In Web Engineering, 282–308. IGI Global, 2005. http://dx.doi.org/10.4018/978-1-59140-432-3.ch013.
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The Web has enabled many companies to create new business from individual customers in a variety of forms, as well as to expand their traditional contact points with them into virtual workplaces dramatically. For the success of customer-oriented businesses on the Web, it is necessary to make a continuous effort to adapt Web business systems to ever-changing customers’ needs. For this challenge, this chapter proposes a customer analysis-based improvement methodology (CAIM) to help evolve customer-oriented Web business systems; this methodology employs scenario-based and object-oriented approaches. The methodology consists of five phases: customer analysis, value analysis, Web design, implementation design, and construction. Scenarios are used to analyze customers’ needs in a natural fashion. A real-life community Web site is illustrated to demonstrate the usefulness of the methodology.
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Tomadaki, Eleftheria, Peter J. Scott, and Kevin A. Quick. "Live Virtual Technologies to Support Extended Events in Online Communities of Practice." In Web-Based Learning Solutions for Communities of Practice, 95–112. IGI Global, 2010. http://dx.doi.org/10.4018/978-1-60566-711-9.ch008.
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Online communities of practice often require support for collaboration over extended periods of time, in what are effectively very long meetings. While there are a wide range of support systems for ‘foreground’ interactions, such as phone calls and video meetings, and a similar range of tools for ‘background’ interactions, such as email and instant messaging, there is a lack in tools that exclusively cater for extended events without switching to different platforms. The current study presents qualitative and quantitative data from a naturalistic insight into the use of two online synchronous communication tools, FM for videoconference and Hexagon for ambient awareness, to support an extended event in a working online community. A complex mix of planned and opportunistic interactions require a new set of working synchronous tools, managing the trade-off between awareness and disruption. Switching between foreground and background ‘meeting activity’ remains a very big challenge.
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Collier, Gordana, Andy Augousti, and Andrzej Ordys. "The Roadmap for Experimental Teaching of Science and Engineering Based Subjects." In Virtual Reality in Education, 801–23. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-8179-6.ch038.
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The continual development of technology represents a challenge when preparing engineering students for future employment. At the same time, the way students interact in everyday life is evolving: their extra-curricular life is filled with an enormous amount of stimulus, from online data to rich Web-based social interaction. This chapter provides an assessment of various learning technology-driven methods for enhancing both teaching and learning in the science and engineering disciplines. It describes the past, present, and future drivers for the implementation of hands-on teaching methods, incorporating industry standard software and hardware and the evolution of learning experiments into all-encompassing online environments that include socializing, learning, entertainment, and any other aspect of student life when studying science and engineering.
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Hüttel, Hans, and Dorina Gnaur. "The Challenge of Building Communities About PBL Supervision." In Collaborative Convergence and Virtual Teamwork for Organizational Transformation, 177–94. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-4891-2.ch009.
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Problem-based learning (PBL) is central to the degree programmes at Aalborg University (AAU), but if one is a member of the teaching faculty with a degree from another institution, it is unlikely that one is familiar with PBL. In this chapter, the authors describe the development of an ongoing experiences with PBL Exchange, a web-based platform whose goal is to facilitate the transfer and development of knowledge and skills within PBL project supervision by means of a web-based crowdsourcing approach that makes it easy to exchange and discuss one's specific problems and experience with project supervision. The goal was to build a new community of practice from a network of practice, but this has turned out to be difficult. The authors discuss and analyze their experiences and suggest technical and social developments that may be able to facilitate the creation of community of practice.
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Tan, Felix B., Helen J. Lin, and Cathy Urquhart. "An Exploratory Study of the Design Preferences of U.S. and Chinese Virtual Communities." In Virtual Technologies, 503–29. IGI Global, 2008. http://dx.doi.org/10.4018/978-1-59904-955-7.ch031.
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With the increasing popularity of electronic commerce, businesses are starting to recognise that developing a good virtual community can help to generate more profits. Virtual communities can be an instrument for building relationships with customers, and retaining customers’ loyalty. Of interest are the similarities and differences in the design preferences of virtual communities across cultural groups. This paper, therefore, examined the design preferences of virtual communities in two cultural groups. The design preferences studied are Web design, tools used, and types of virtual communities preferred. Content analysis was employed to study 20 of the most popular Chinese and U.S. virtual communities. The study found that there are differences in the preference for the type of virtual communities and the tools used by Chinese and U.S. communities. The findings challenge aspects of Web site design across these cultural groups thought to be dissimilar based on prior research, indicating that designers of virtual communities must treat cultural differences with caution. Implications for research and practice are also discussed.
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Dorn, Jürgen, Peter Hrastnik, and Albert Rainer. "Web Service Discovery and Composition for Virtual Enterprises." In Agent and Web Service Technologies in Virtual Enterprises, 190–207. IGI Global, 2008. http://dx.doi.org/10.4018/978-1-59904-648-8.ch011.
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One main characteristic of virtual enterprises are short-term collaborations between business partners to provide efficient and individualized services to customers. The MOVE project targets at a methodology and a software framework to support such flexible collaborations based on process oriented design and communication by Web services. MOVE’s framework supports the graphical design and verification of business processes, the execution and supervision of processes in transaction-oriented environment, and the dynamic composition and optimization of processes. A business process may be composed from a set of Web services, deployed itself as Web service and executed in the framework. The composition of processes from Web services is implemented with methods from AI-planning. We apply answer set programming (ASP) and map Web service descriptions and customer requests into the input language of the ASP software DLV. Composition goals and constraints guide a composition challenge. We show the performance of our program and give some implementation details. Finally we conclude with some insights.
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Vat, Kam Hou. "Building Virtual Communities Through a De-Marginalized View of Knowledge Networking." In Virtual Technologies, 488–502. IGI Global, 2008. http://dx.doi.org/10.4018/978-1-59904-955-7.ch030.
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The chapter investigates an actionable context of knowledge networking, from the perspective of sustainable development which should accommodate the building of communities in cyberspace so much exemplified in today’s Internet and World Wide Web. The premise of this exploration is that members, or participants, in any community are engaged in learning that is critical to the survival and reproduction of that community. Through community participation, learners find and acquire models and have the opportunity themselves to become models and apprentices of others. This investigation provides a basis for thinking about the possibilities of a virtual community and the dynamics of its construction across a variety of computer-based contexts. The design and refinement of technology as the conduit for extending and enhancing the possibilities of virtual community building is an essential issue, but the role of the individuals as participants in such a community is as important. The idea of sustainable knowledge networking is to bring about continual learning and change for the community in need. The emergent challenge of such a mission is to de-marginalize many of the non-technical issues of building virtual communities for knowledge transfer and learning. The chapter concludes by reiterating the challenge of expositing what it means to create an appropriate context of knowledge networking through which purposeful actions can be supported with the elaboration of suitable information technologies.
Conference papers on the topic "Web-based virtual walking challenge"
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Shah, Prachi, and Vivek Sangwan. "Study of Symmetric Solutions of an Underactuated Bipedal Robot." In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-87723.
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Underactuated bipedal walking has been intensively studied for the past few decades and several methods have been proposed to design trajectories; however, quickly generating trajectories with varying speeds remains a challenge. One solution is to have a library of trajectories precomputed from which a new one can be picked or constructed quickly based on specific requirements. For this to become feasible one needs to develop a good understanding of the solution space. This is non-trivial for a non-linear hybrid system such as a walking robot. The goal of this study is to explore a two parameter solution space of simple underactuated biped, under a specific virtual constraint, used in literature, to enforce a symmetric gait. The family of feasible walking solutions identified is further evaluated for performance and energy efficiency. This analysis can potentially facilitate quick selection of walking trajectories for meeting specific walking speed and efficiency requirements.
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Paredes, Victor, and Ayonga Hereid. "Dynamic Locomotion of a Lower-Limb Exoskeleton Through Virtual Constraints Based ZMP Regulation." In ASME 2020 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/dscc2020-3170.
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Abstract Robotic lower-limb exoskeletons have the potentials to assist individuals with paraplegia to perform normal ambulatory functions and to provide exceptional health benefits. While modern-day hardware for exoskeletons is becoming more powerful, there are still significant challenges in implementing a practical exoskeleton motion control framework that helps paraplegic individuals to complete regular ambulatory tasks stably, safely, and efficiently without the use of arm-crutches. Inspired by the current development in dynamic walking controllers for a bipedal robot, this paper proposes a Hybrid Zero Dynamics (HZD) based control approach for powered lower-limb exoskeletons to achieve dynamic hand-free locomotion. Due to the unmodelled dynamics and exerted forces from the user upon the exoskeleton, the model-based approaches such as Hybrid Zero Dynamics struggles when implementing on the actual hardware. In this paper, we systematically formulate a virtual-constraints-based regulation framework in order to robustly stabilize the system around a stable periodic gait within the HZD framework. This regulator is then used to regulate the zero moment point (ZMP) to improve the lateral stability of the bipedal robot by indirectly regulating the center of mass (CoM) position of the exoskeleton due to the lack of available force sensors at the bottom of the feet. The proposed approach presents a general structure with which the virtual constraints can be heuristically regulated to satisfy the stability condition imposed by the ZMP criteria without compromising the hybrid invariance of the walking gaits. The effectiveness of the regulators was demonstrated through stable walking of a powered lower-limb exoskeleton in simulation and experimentation.
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Yuan, Zhaoguang, Yahya Hashemian, Jorge Morana, Alexander Celis, and Karen Ying Chiao Tee. "Overcoming Virtual Training Challenges to Promote the Adoption of Cloud Solutions." In SPE Annual Technical Conference and Exhibition. SPE, 2022. http://dx.doi.org/10.2118/210337-ms.
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Abstract Cloud solutions play an essential role in digital transformation in the oil and gas industry. Training is key to promote cloud solutions and accelerate digital transformation. Unlike legacy computer-based software, agile development, which continuously releases new features of cloud solutions, makes the learning process more challenging because of the necessarily fast-paced adoption of the knowledge. Another challenge was that we had to virtually deliver the training sessions because of the pandemic during 2020 and 2021, which made the interaction with students very difficult without face-to-face contact. To be ready for the virtual training challenges, a self-guided quick-learning page was created and leveraged to bridge the gap between the continuous release of new features in cloud solutions and the fast-paced knowledge adoption. Training materials, including the self-training page, were updated once every quarter to reflect the new features in the cloud solutions. Unlike traditional software, after each training, the web-based training environment (tenant) was occupied by many training projects created by students, which made it difficult to be used by the new group of students. To solve this issue, a new procedure was developed to efficiently reset the tenant to ensure a smooth and data-secured training. As the training requests grew exponentially, more than 35 training tenants were created to meet the high demand and frequency of training from different customers across the world. The self-guided quick-training page has more than 17,454 visits and 600 unique users, with positive feedback from students. In 2021, more than 630 users from 40 countries were successfully trained. This is a two-fold increase from 2020 and a five-fold increase from 2019. In this paper, we provide new insight to successfully deliver virtual training and promote the adoption of cloud solutions in the digital transformation of the exploration and production industry.
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Folgieri, Raffaella, Tea Baldigara, and Sergej Gričar. "DESIGN OF A WORKBENCH AND GUIDELINES TO IMPROVE THE EFFICACY OF ADVERTISING MESSAGES." In Tourism in Southern and Eastern Europe 2021: ToSEE – Smart, Experience, Excellence & ToFEEL – Feelings, Excitement, Education, Leisure. University of Rijeka, Faculty of Tourism and Hospitality Management, 2021. http://dx.doi.org/10.20867/tosee.06.18.
Full textAbstract:
Purpose – This study is aimed at proposing the design of an efficient workbench and guidelines to help content providers in tourism to address proper messages both in managing ordinary activities and in facing unpredictable events and external shocks. Recent Covid-19 related events have particularly stressed the importance of tools supporting, guiding and directing message providers in designing advertising campaigns to attract visitors providing proper information and contrasting the possible negative influence of misinformation. Social media and the Internet can give a wide picture of current trends. Nevertheless, without appropriate tools suitable to analyse a huge quantity of data, the research of information on trends and mood by advertising providers constitutes a challenge difficult to face unless limited to the analysis of selected websites with consequent possible loss of details. Such a choice, based on humans’ subjective selection of sources, could introduce bias compromising the efficiency of the message. Methodology – Several studies state that the composition of an advertising campaign should be a conjoint activity including both creative and scientific work, involving also methodologies and tools helping messages provider to improve the efficacy and the impact of advertising campaigns. The present study aims to introduce an innovative methodology based on combining ideas from Information Technology and Econometrics. In particular Artificial Intelligence methods, such as Machine Learning and sentiment analysis, through the Artificial Neural Networks (ANN) and Vector Autoregressive models (VAR). Findings – The language used and emotions elicited in tourism advertising messages have a strong impact on attracting visitors and tourists, particularly when international events create concerns in the population. Indeed, a multimodal approach, supported by tools from Econometrics, Machine Learning and Sentiment Analysis showed the efficacy in capturing the mood and the trend in prospect visitors to allow to redistribute tourist flows towards different destinations and within wider periods of the year. Contribution – The work gives a theoretical and practical contribution. Indeed, the combination of Econometrics, Artificial Neural Networks and Sentiment Analysis tools can constitute a scientific base to analyse trends and to compose advertising texts, websites and campaigns taking into account the impact of unexpected events and maximising Linguistics suggestions to improve the efficiency of messages. Besides, the tools also allow suggesting guidelines of the features and the structure that should be always considered. Last but not least, these tools could be used to select the main topics arising on the web and social networks around current issues perceived by visitors, allowing the selection of a list of Q&A practical indications which can be translated into effective virtual assistants particularly useful when the personnel is reduced due to unexpected events and constraints, as during Covid-19 periods.