scholarly journals A Survey on QoE-Oriented VR Video Streaming: Some Research Issues and Challenges

Electronics ◽  
2021 ◽  
Vol 10 (17) ◽  
pp. 2155
Author(s):  
Jinjia Ruan ◽  
Dongliang Xie
Keyword(s):  
Video Streaming ◽  
Service Providers ◽  
Future Research ◽  
Research Issues ◽  
Current State ◽  
Large Numbers ◽  
Smart Education ◽  
Future Research Directions ◽  
Streaming Services

With the advent of the information age, VR video streaming services have emerged in large numbers in scenarios such as immersive entertainment, smart education, and the Internet of Vehicles. People are also demanding an increasing number of virtual-reality (VR) services, and service providers must ensure a good user experience. Therefore, the quality of the VR user’s experience is receiving increasing attention from academia and industry. The review in this paper focuses on a comprehensive summary of the current state of quality-of-experience (QoE) technologies applied to VR video streaming. First, we review the main influencing factors of QoE and VR video streaming. Second, the user QoE for VR evaluation is discussed. Third, the modeling of QoE for VR video streaming, the QoE-oriented VR optimization problem, and enabling techniques of machine learning for VR video streaming improvement are summarized. Lastly, we present current challenges and possible future research directions.

scholarly journals The Scarcity of Literature on the Psychological, Social, and Emotional Effects of Gastroparesis in Children

Children ◽  
2020 ◽  
Vol 7 (9) ◽  
pp. 115
Author(s):  
Tiffany H. Taft ◽  
Bethany Doerfler ◽  
Emily Edlynn ◽  
Linda Nguyen
Keyword(s):  
Pediatric Patients ◽  
Significant Risk ◽  
Future Research ◽  
Social And Emotional ◽  
Current State ◽  
Increased Risk ◽  
Psychosocial Impacts ◽  
Future Research Directions ◽  
State Of Research

Gastroparesis (GP) is a chronic, gastric dysmotility disorder with significant morbidity and mortality. The hallmark of GP is the delayed emptying of the contents of the stomach in the absence of any mechanical obstruction. Patients most commonly report chronic symptoms of nausea, vomiting, feeling full quickly when eating, bloating, and abdominal pain. Treatments are limited with relatively poor efficacy. As such, children with GP are at significant risk for the development of psychological co-morbidities. In this paper, we provide a topical review of the scientific literature on the psychological, social, and emotional impacts of gastroparesis in pediatric patients. We aim to document the current state of research, identify gaps in our knowledge with appropriate recommendations for future research directions, and highlight the unique challenges pediatric patients with GP and their families may face as they manage this disease. Based on the current review, research into the psychosocial impacts in children with GP is essentially non-existent. However, when considering research in children with other chronic digestive diseases, children with GP are likely to face multiple psychosocial challenges, including increased risk for anxiety and depression, stigma, and reduced quality of life. These significant gaps in the current understanding of effects of GP across domains of childhood functioning allow for ample opportunities for future studies to address psychosocial outcomes.

The State of Undergraduate Rehabilitation Education: Current Program Coordinator Perspectives

2018 ◽  
Vol 32 (4) ◽  
pp. 253-261 ◽  
Author(s):  
Gina Oswald ◽  
Garrett Huck ◽  
J. Chad Duncan
Keyword(s):  
Quality Of Life ◽  
Future Research ◽  
Research Directions ◽  
Program Coordinator ◽  
Program Coordinators ◽  
Current State ◽  
Current Program ◽  
Future Research Directions ◽  
Satisfactory Quality

PurposeThe current climate of higher education, the implementation of the Workforce Opportunity and Innovation Act, and the 2017 merger of accrediting bodies have created changes within the field of rehabilitation. These changes must be appropriately addressed in order to fortify a profession that has long been instrumental in ensuring that individuals with disabilities are able to achieve a satisfactory quality of life.MethodsThis study was designed to provide current undergraduate rehabilitation education (URE) information to the field for discussion and planning purposes.ResultsThis research represents the results of a survey of URE program coordinators (n = 26) on the current state of their programs and programmatic needs.ConclusionRecommendations for current URE programs and future research directions are provided.

scholarly journals 6G Enabled Smart Infrastructure for Sustainable Society: Opportunities, Challenges, and Research Roadmap

Sensors ◽  
2021 ◽  
Vol 21 (5) ◽  
pp. 1709
Author(s):  
Agbotiname Lucky Imoize ◽  
Oluwadara Adedeji ◽  
Nistha Tandiya ◽  
Sachin Shetty
Keyword(s):  
Wireless Communication ◽  
Psychological Health ◽  
Future Research ◽  
Agriculture Education ◽  
Social Psychological ◽  
Research Issues ◽  
Data Intensive ◽  
Wireless Communication Network ◽  
Data Intensive Applications

The 5G wireless communication network is currently faced with the challenge of limited data speed exacerbated by the proliferation of billions of data-intensive applications. To address this problem, researchers are developing cutting-edge technologies for the envisioned 6G wireless communication standards to satisfy the escalating wireless services demands. Though some of the candidate technologies in the 5G standards will apply to 6G wireless networks, key disruptive technologies that will guarantee the desired quality of physical experience to achieve ubiquitous wireless connectivity are expected in 6G. This article first provides a foundational background on the evolution of different wireless communication standards to have a proper insight into the vision and requirements of 6G. Second, we provide a panoramic view of the enabling technologies proposed to facilitate 6G and introduce emerging 6G applications such as multi-sensory–extended reality, digital replica, and more. Next, the technology-driven challenges, social, psychological, health and commercialization issues posed to actualizing 6G, and the probable solutions to tackle these challenges are discussed extensively. Additionally, we present new use cases of the 6G technology in agriculture, education, media and entertainment, logistics and transportation, and tourism. Furthermore, we discuss the multi-faceted communication capabilities of 6G that will contribute significantly to global sustainability and how 6G will bring about a dramatic change in the business arena. Finally, we highlight the research trends, open research issues, and key take-away lessons for future research exploration in 6G wireless communication.

Life cycle assessment of carbon capture and storage/utilization: From current state to future research directions and opportunities

2021 ◽  
Vol 108 ◽  
pp. 103309
Author(s):  
Tatiane Tobias da Cruz ◽  
José A. Perrella Balestieri ◽  
João M. de Toledo Silva ◽  
Mateus R.N. Vilanova ◽  
Otávio J. Oliveira ◽  
...  
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Carbon Capture ◽  
Carbon Capture And Storage ◽  
Future Research ◽  
Research Directions ◽  
Current State ◽  
Future Research Directions ◽  
And Storage

scholarly journals Estimating PQoS of Video Streaming on Wi-Fi Networks Using Machine Learning

Sensors ◽  
2021 ◽  
Vol 21 (2) ◽  
pp. 621
Author(s):  
Maghsoud Morshedi ◽  
Josef Noll
Keyword(s):  
Machine Learning ◽  
Video Streaming ◽  
Network Performance ◽  
Service Providers ◽  
Perceived Quality ◽  
Internet Service Providers ◽  
Performance Parameters ◽  
Internet Service ◽  
Access Points

Video on demand (VoD) services such as YouTube have generated considerable volumes of Internet traffic in homes and buildings in recent years. While Internet service providers deploy fiber and recent wireless technologies such as 802.11ax to support high bandwidth requirement, the best-effort nature of 802.11 networks and variable wireless medium conditions hinder users from experiencing maximum quality during video streaming. Hence, Internet service providers (ISPs) have an interest in monitoring the perceived quality of service (PQoS) in customer premises in order to avoid customer dissatisfaction and churn. Since existing approaches for estimating PQoS or quality of experience (QoE) requires external measurement of generic network performance parameters, this paper presents a novel approach to estimate the PQoS of video streaming using only 802.11 specific network performance parameters collected from wireless access points. This study produced datasets comprising 802.11n/ac/ax specific network performance parameters labelled with PQoS in the form of mean opinion scores (MOS) to train machine learning algorithms. As a result, we achieved as many as 93–99% classification accuracy in estimating PQoS by monitoring only 802.11 parameters on off-the-shelf Wi-Fi access points. Furthermore, the 802.11 parameters used in the machine learning model were analyzed to identify the cause of quality degradation detected on the Wi-Fi networks. Finally, ISPs can utilize the results of this study to provide predictable and measurable wireless quality by implementing non-intrusive monitoring of customers’ perceived quality. In addition, this approach reduces customers’ privacy concerns while reducing the operational cost of analytics for ISPs.

A model for managing service encounters for neo-luxury consumers

2016 ◽  
Vol 8 (1) ◽  
pp. 41-52 ◽  
Author(s):  
Bonnie Canziani ◽  
Kittichai Watchravesringkan ◽  
Jennifer Yurchisin
Keyword(s):  
Social Class ◽  
Brand Management ◽  
Service Providers ◽  
Future Research ◽  
Service Encounters ◽  
Theoretic Model ◽  
Luxury Brands ◽  
Content Type ◽  
Consumer Markets ◽  
Future Research Directions

Purpose – This paper aims to explore a theoretical relationship among perceptions of consumer social class, the perceived legitimacy of customer requests for service and the delivery of intangible services. It focuses the discussion on service firm encounters with non-traditional consumers seeking to purchase from luxury brands. Design/methodology/approach – The paper reviews the literature for current trends in strategies of luxury brands and characteristics of evolving global and Asian consumer markets for luxury and neo-luxury goods and draws a theoretic model with propositions. Findings – Evidence suggests that service providers can improve efforts to expand services to the newly rich and trading-up neo-luxury consumer markets by focusing on the intangible elements of the service delivery system. Particular emphasis is placed on enhancing employee treatment of neo-luxury customers during service encounters by understanding the influence of employee perceptions of consumer social class and evaluations of the perceived legitimacy of customer requests for service. Originality/value – The paper contributes to the theoretical discussion in luxury brand management by suggesting that employees are influenced by impressions of customer worth and other attributes when determining responses to customers during service encounters. Implications for practitioners and future research directions for academics based on the framework are presented.

scholarly journals Computational Techniques for Eye Movements Analysis towards Supporting Early Diagnosis of Alzheimer’s Disease: A Review

2018 ◽  
Vol 2018 ◽  
pp. 1-13 ◽  
Author(s):  
Jessica Beltrán ◽  
Mireya S. García-Vázquez ◽  
Jenny Benois-Pineau ◽  
Luis Miguel Gutierrez-Robledo ◽  
Jean-François Dartigues
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Eye Movements ◽  
Early Diagnosis ◽  
Future Research ◽  
Computational Techniques ◽  
Research Directions ◽  
Future Research Directions ◽  
Tools And Techniques

An opportune early diagnosis of Alzheimer’s disease (AD) would help to overcome symptoms and improve the quality of life for AD patients. Research studies have identified early manifestations of AD that occur years before the diagnosis. For instance, eye movements of people with AD in different tasks differ from eye movements of control subjects. In this review, we present a summary and evolution of research approaches that use eye tracking technology and computational analysis to measure and compare eye movements under different tasks and experiments. Furthermore, this review is targeted to the feasibility of pioneer work on developing computational tools and techniques to analyze eye movements under naturalistic scenarios. We describe the progress in technology that can enhance the analysis of eye movements everywhere while subjects perform their daily activities and give future research directions to develop tools to support early AD diagnosis through analysis of eye movements.

scholarly journals The Current Situation and Prospect Of Study Quality Evaluation Research in China in The Last 10 Years

2020 ◽  
Vol 2 (1) ◽  
pp. 101-112
Author(s):  
Wu Aixia ◽  
Zhou Ying ◽  
Tommy Tanu Wijaya
Keyword(s):  
Quality Evaluation ◽  
Evaluation Research ◽  
Teaching Quality ◽  
Current Situation ◽  
Annual Number ◽  
Future Research ◽  
Existing Problems ◽  
Content Analysis Method ◽  
Future Research Directions

With the deepening of China's educational reform, the evaluation of teaching quality has become an important aspect of teaching reform.And the evaluation of students'learning quality is an important part of teaching evaluation. Research on it will help to improve the teaching quality of our country and promote the overall improvement of students' morality, intelligence, physical fitness and beauty.Therefore, this study takes 108 literatures related to the study of learning quality evaluation in China as the research object, uses content analysis method, carries out statistical analysis on the annual number of literatures, Journal distribution, author status, paper influence, research content, etc., analyzes the current situation and existing problems of the study of learning quality evaluation in China, and puts forward the need for further deepening.On the basis of these questions, possible future research directions are proposed.

Big 4 Firms as Legal Service Providers: Implications for Audit Practice and Future Research Directions

2021 ◽  
Author(s):  
David N. Herda ◽  
Jonathan H. Grenier ◽  
Billy E. Brewster ◽  
Mary E Marshall
Keyword(s):  
Service Providers ◽  
Current Status ◽  
Future Research ◽  
Legal Services ◽  
Legal Service ◽  
Accounting Firms ◽  
Big 4 ◽  
Rule Changes ◽  
Future Research Directions ◽  
The U.S

The Big 4 accounting firms have expanded their legal service arms to historic proportions over the last decade, employing thousands of lawyers around the world. Although most of the Big 4's revenue from legal services is presently generated outside the U.S., they are now making inroads into the U.S. legal market, and rule changes are being considered that would further allow the Big 4 to offer legal services in the U.S. This essay summarizes the current status of Big 4 firms as legal service providers, discusses potential implications of legal offerings for their U.S. audit practices, and suggests directions for future research. Our proposed research questions are informed by several literatures, interviews with former Big 4 partners and practicing attorneys, and a survey of the general public. They center on the fundamental difference between audit and law practices, brand equity considerations, and culture changes within the Big 4.

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