An Adaptive Jamming Device

2020 ◽  
Vol 13 ◽  
Author(s):  
Carlos Gonzaleza
Keyword(s):  
Geographical Location ◽  
Geographic Area ◽  
Future Research ◽  
Technical Problems ◽  
Research Issues ◽  
Current State ◽  
Covered Area ◽  
Wireless Signal ◽  
Technical Issues ◽  
Compare And Contrast

Background: All currently known wireless signals jammers have in common is the fact that there is no delimiting of the geographical location where the jamming is done. This jamming is delimited only by the power of the generated signal. The covered area is a sphere with center on the emitter of the wireless signal. The reviewed patent provides a solution to the problem of how to restrict the wireless signal in a specific geographic area. Objective: This paper is a Mini-Review of US Patent # 9,787425, we analyze the current technical problems this patent tries to solve, and discuss the solutions presented. Method: We start by analyzing current state of the art for jamming wireless signals. Indicate drawbacks of the previous approaches. Compare and contrast these previous arts with the reviewed patent. Analyze if the proposed solutions are suitable to solve the critical problem of jamming wireless signals on a delimited geographic area. Describe some disadvantages of the reviewed patent, and suggest future research issues. Conclusion: We discuss some non-technical issues with this reviewed patent, like legal issues which are dependent on the country of use of the patent. We describe the current and future use of the reviewed patent.

scholarly journals Wing magnetohydrodynamic facility of aircraft propulsion system

2021 ◽  
Author(s):  
Pavol Miča ◽  
◽  
Jozef Čerňan
Keyword(s):  
Future Research ◽  
Main Function ◽  
Electrically Conductive ◽  
Advantages And Disadvantages ◽  
Current State ◽  
Primary Drive ◽  
Harmful Emissions ◽  
Technical Issues ◽  
Aircraft Propulsion System ◽  
Aircraft Propulsion

Magnetohydrodynamics is one of the relatively new fields of physics studying the dynamics of magnetic fields in electrically conductive fluids. The implementation using magnetohydrodynamic principles applied to aircraft propulsion systems is so far only in a range of experiments. So far, real applications have occurred only a few times and always only at the level of experiments and prototypes. In my paper, I deal with the application of a magnetohydrodynamic device built into the wing of an airplane. This means should work as a secondary type of drive in cooperation with the primary drive, which is represented by a turbofan motor. The device´s main function is to reduce the fuel requirements of the primary drive and reduce noise and other harmful emissions. The work also includes drawings created in the program AutoCAD, where I designed the location and implementation of a wing magnetohydrodynamic device in the wing of general construction. In this work, I also explore the advantages and disadvantages of using different tips of the primary drive. I am also researching the current state of the problem where I am analyzing the Japanese project of the YAMATO-1 semi-catamaran with magnetohydronymous propulsion and a prototype of an ion-powered crawler from IMT scientists. I also examine in detail all the theoretical knowledge concerning magnetohydrodynamics and wing design. Finally, I compare the advantages and disadvantages of using this tool as well as other technical issues related to construction. This work can serve as a basis for further future research into the application of magnetohydrodynamic principles in aviation

scholarly journals Self-Esteem in Second Life: An inWorld Group Intervention for Women with Disabilities

1970 ◽  
Vol 4 (1) ◽  
Author(s):  
Margaret A. Nosek ◽  
Susan Robinson Whelen ◽  
Rosemary B. Hughes ◽  
Erin Porcher ◽  
Giselle Davidson ◽  
...  
Keyword(s):  
Second Life ◽  
Group Intervention ◽  
Physical Disabilities ◽  
Self Esteem ◽  
Internet Technology ◽  
Future Research ◽  
Additional Energy ◽  
Technical Problems ◽  
Research Issues ◽  
Women With Physical Disabilities

We are developing and investigating the feasibility of a self-esteem enhancement intervention in Second Life for women with physical disabilities. We adapted the curriculum of a previously tested workshop intervention to include features unique to this environment. Results of the beta test were very positive. Everyone involved showed considerable enthusiasm for exploring the new world of SL. The group leaders were challenged to resolve technical problems on every occasion, but these diminished and were perceived as manageable as the intervention progressed. Beta testers gave positive ratings to the information presented, organization, and usefulness of the intervention and found it very enjoyable although fatigue and stress limited the participation of some. They appreciated the use of Internet technology as an accommodation to their disability, in place of requiring transportation and additional energy expenditure to attend face-to-face meetings. Research issues related to engagement, measurement, and participant safety, as well as future research directions, are discussed. We conclude that SL has great potential for delivering health promotion interventions to women with physical disabilities.

Brand extension feedback effects: What do we know and where should we go?

2017 ◽  
Vol 26 (7) ◽  
pp. 671-689 ◽  
Author(s):  
Michelle Childs
Keyword(s):  
Design Methodology ◽  
Brand Extension ◽  
Research Articles ◽  
Future Research ◽  
Feedback Effects ◽  
Research Issues ◽  
Content Type ◽  
Current State ◽  
Research Questions ◽  
Review Criteria

Purpose The purpose of this study is to review and summarise the current body of literature on brand extension feedback effects and to identify which research issues are inhibiting advancement in this stream of literature. Based on this analysis, suggestions for future research are provided. Design/methodology/approach In a systematic literature review, criteria were used to identify relevant journal publications that have specifically investigated brand extension feedback effects (n = 53). Research articles were subsequently evaluated for further analysis. Findings Several issues may inhibit advancement in the literature on brand extension feedback effects. These include issues related the conceptual, methodological and context of research, as well as related to the consumer, product, brand and marketing. Specific research questions are provided which address issues found in this literature stream. Research limitations/implications This paper aims to resolve issues in research on brand extension feedback effects to facilitate more rapid advancement in this stream of literature. Originality/value This research fills a need to summarise the current state of the literature and identifies research issues that need to be addressed in the future.

Desolated milieu: exploring the trajectory of workplace loneliness (2006-2019)

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Mantasha Firoz ◽  
Richa Chaudhary ◽  
Aamna Khan
Keyword(s):  
Geographical Location ◽  
Theoretical Development ◽  
Future Research ◽  
Content Type ◽  
Body Of Knowledge ◽  
Current State ◽  
Wide Range ◽  
Comprehensive Picture ◽  
State Of Research ◽  
Tools And Techniques

Purpose The purpose of this paper is to trace the trajectory of research done exclusively on the topic of Workplace Loneliness from 2006 to 2019. Based on the content analysis of 29 articles, this paper critically assesses, summarizes and consolidates the existing body of knowledge in the field of workplace loneliness. Design/methodology/approach This review is organized around five major themes – origin and the conceptual grounding of the construct; emergence of the concept of workplace loneliness, conceptualizations and overlap with the related constructs; measurement tools and techniques; analysis of its predictors, outcomes, mediators and moderators; and development of an integrated model specifying the nomological network of workplace loneliness for clarifying the current state of thinking and guiding future research in the area. Findings The concept of workplace loneliness started receiving attention from the year 2006 and gained momentum in 2016. The studies from wide range of countries show that workplace loneliness is not restricted to one geographical location but is a phenomenon that affects people and economies around the world. The review highlights the conceptualization and measurement challenges along with the need for theoretical development of the field. Further, the existing literature fails to provide a comprehensive picture of the predictors, underlying processes, contingencies and outcomes of workplace loneliness. Originality/value This study being one of the rare attempts to consolidate the existing body of knowledge on loneliness at work will provide academicians and practitioners with a comprehensive account of the state of research and development on an important and yet neglected issue of workplace loneliness.

Modular Reconfigurable Robotics

2019 ◽  
Vol 2 (1) ◽  
pp. 63-88 ◽  
Author(s):  
Jungwon Seo ◽  
Jamie Paik ◽  
Mark Yim
Keyword(s):  
State Of The Art ◽  
Low Cost ◽  
Future Research ◽  
Research Directions ◽  
Current State ◽  
Robot Systems ◽  
Technical Issues ◽  
Future Research Directions ◽  
Reconfigurable Robot ◽  
High Level

This article reviews the current state of the art in the development of modular reconfigurable robot (MRR) systems and suggests promising future research directions. A wide variety of MRR systems have been presented to date, and these robots promise to be versatile, robust, and low cost compared with other conventional robot systems. MRR systems thus have the potential to outperform traditional systems with a fixed morphology when carrying out tasks that require a high level of flexibility. We begin by introducing the taxonomy of MRRs based on their hardware architecture. We then examine recent progress in the hardware and the software technologies for MRRs, along with remaining technical issues. We conclude with a discussion of open challenges and future research directions.

scholarly journals A Systematic Literature Review of Rural Homestays and Sustainability in Tourism

SAGE Open ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 215824402110071
Author(s):  
Zain ul Abedin Janjua ◽  
Gengeswari Krishnapillai ◽  
Mobashar Rahman
Keyword(s):  
Literature Review ◽  
Systematic Literature Review ◽  
Geographical Location ◽  
Asia Pacific ◽  
Future Research ◽  
Current State ◽  
Information And Communication ◽  
Future Research Directions ◽  
Meta Analyses ◽  
Sample Method

This systematic literature review is designed to evaluate the current state of knowledge in rural homestays and tourism academic literature. With reference to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) flowchart, we reviewed 94 studies published in the selected journals from January 1, 2010, to December 31, 2020. Our review explores how sustainable rural homestays have been previously researched in terms of the context, topic, sample, method, geographical location, and theoretical framework. The review provides insights on sustainability and rural homestay tourism from the perspective of co-occurrence beside highlighting the valuable content addressed by authors and suggesting future research directions. In a sustainable rural tourism context, only 51% of the reviewed studies had considered homestay as the core and independent area of inquiry. This review notes an increasing number of researchers from developing countries are working on community-based rural homestays, especially in the Asia-Pacific region. Unfortunately, important topics—like homestay branding, homestay and entrepreneurship, homestays and information and communication technology (ICT) competency, homestay operator’s training and development about sustainability—are rarely addressed in the existing literature.

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.

Two decades of research on nation branding: a review and future research agenda

2019 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Andy W. Hao ◽  
Justin Paul ◽  
Sangeeta Trott ◽  
Chiquan Guo ◽  
Heng-Hui Wu
Keyword(s):  
Design Methodology ◽  
Nation Branding ◽  
Future Research ◽  
Journal Articles ◽  
Research Issues ◽  
Content Type ◽  
Future Research Agenda ◽  
Current State ◽  
Research Themes ◽  
Methodological Approaches

Purpose Despite the growing interest by scholars, practitioners and public policymakers, there are still divergent and fragmented conceptualizations of nation branding as the field is still developing. In response, the purpose of this paper is to review and synthesize nation branding research and to provide directions for future research. Design/methodology/approach The authors review peer-reviewed theoretical and empirical journal articles published during the last two decades – from 1998 to 2018. Selected journal articles on nation branding were subsequently synthesized for further insights. Findings The field of nation branding is fragmented and has developed in the course of the last two decades in different directions. This paper identifies key publication outlets and articles, major theoretical and methodological approaches and primary variables of interest that exist in the nation branding literature. The findings also highlight several research themes for future research. Originality/value This research fills a need to summaries the current state of the nation branding literature and identifies research issues that need to be addressed in the future.

Self-leadership Training Review

2019 ◽  
Author(s):  
Andrew Sidwell ◽  
Michael Perry
Keyword(s):  
Leadership Training ◽  
Future Research ◽  
Training Methods ◽  
Current State ◽  
A Current

The purpose of this article was to examine the current state of self-leadership training. The authors analyzed all published, publicly available studies (in English) pertaining to self-leadership training methods, offering a current state of self-leadership training, and implications for future research.

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