Estimation of the impact of quality of service parameters on multimedia transmissions

2018 ◽  
Author(s):  
Daniel Sawicki ◽  
Anna Derecka
Keyword(s):  
Quality Of Service ◽  
Multimedia Transmissions ◽  
Quality Of Service Parameters ◽  
The Impact

scholarly journals The impact of quality of service parameters to the subjective and objective video quality assessment

2018 ◽  
Vol 15 (1) ◽  
pp. 97-114 ◽  
Author(s):  
Danilo Stanojevic ◽  
Boban Bondzulic ◽  
Boban Pavlovic ◽  
Vladimir Petrovic
Keyword(s):  
Quality Of Service ◽  
Subjective Experience ◽  
Objective Assessment ◽  
Video Quality ◽  
Destructive Effect ◽  
Objective Quality ◽  
Scatter Plots ◽  
Quality Of Service Parameters ◽  
The Impact

This paper deals with the delay, delay variation - jitter, packet loss rate and bandwidth as quality of service parameters, in the form of four types of video quality degradations. The impact of defined levels of degradation on subjective impressions (given as mean opinion scores) is analyzed. ReTRiEVED video dataset with publicly available subjective scores is used in the analysis. Three full-reference measures are used for objective assessment of video quality. The degree of consistency of subjective and objective quality scores is shown through scatter plots and quantitative measures (linear correlation coefficient and correlation of the ranks). Based on the interpolation functions, quality of service parameters are mapped to subjective experience. We show that jitter is a much more destructive effect than other degradation types.

Demand of Wireless Network and Security in Current Research

2015 ◽  
Vol 14 (6) ◽  
pp. 5809-5813
Author(s):  
Abhishek Prabhakar ◽  
Amod Tiwari ◽  
Vinay Kumar Pathak
Keyword(s):  
Wireless Networks ◽  
Quality Of Service ◽  
Wireless Network ◽  
Network Performance ◽  
Wireless Security ◽  
Human Intervention ◽  
Unauthorized Access ◽  
Quality Of Service Parameters ◽  
Wireless Infrastructure

Wireless security is the prevention of unauthorized access to computers using wireless networks .The trends in wireless networks over the last few years is same as growth of internet. Wireless networks have reduced the human intervention for accessing data at various sites .It is achieved by replacing wired infrastructure with wireless infrastructure. Some of the key challenges in wireless networks are Signal weakening, movement, increase data rate, minimizing size and cost, security of user and QoS (Quality of service) parameters... The goal of this paper is to minimize challenges that are in way of our understanding of wireless network and wireless network performance.

Simulation and Emulation Tools for Fog Computing

2020 ◽  
Vol 13 ◽  
Author(s):  
Simar Preet Singh ◽  
Rajesh Kumar ◽  
Anju Sharma ◽  
S. Raji Reddy ◽  
Priyanka Vashisht
Keyword(s):  
Quality Of Service ◽  
Programming Languages ◽  
Traffic Management ◽  
Fog Computing ◽  
Research Work ◽  
Research Experience ◽  
Computing Paradigm ◽  
Quality Of Service Parameters ◽  
User Friendly

Background: Fog computing paradigm has recently emerged and gained higher attention in present era of Internet of Things. The growth of large number of devices all around, leads to the situation of flow of packets everywhere on the Internet. To overcome this situation and to provide computations at network edge, fog computing is the need of present time that enhances traffic management and avoids critical situations of jam, congestion etc. Methods: For research purposes, there are many methods to implement the scenarios of fog computing i.e. real-time implementation, implementation using emulators, implementation using simulators etc. The present study aims to describe the various simulation and emulation tools for implementing fog computing scenarios. Results: Review shows that iFogSim is the simulator that most of the researchers use in their research work. Among emulators, EmuFog is being used at higher pace than other available emulators. This might be due to ease of implementation and user-friendly nature of these tools and language these tools are based upon. The use of such tools enhance better research experience and leads to improved quality of service parameters (like bandwidth, network, security etc.). Conclusion: There are many fog computing simulators/emulators based on many different platforms that uses different programming languages. The paper concludes that the two main simulation and emulation tools in the area of fog computing are iFogSim and EmuFog. Accessibility of these simulation/emulation tools enhance better research experience and leads to improved quality of service parameters along with the ease of their usage.

scholarly journals HOSPITALITY MANAGEMENT AS A PREREQUISITE OF EFFECTIVE TOURISM DEVELOPMENT IN UKRAINE

2021 ◽  
Author(s):  
Olena Khytra
Keyword(s):  
Quality Of Service ◽  
Corporate Culture ◽  
Management System ◽  
Hospitality Industry ◽  
Professional Competence ◽  
Tourism Industry ◽  
Hospitality Management ◽  
Social Orientation ◽  
The Impact

The hospitality industry acquires the features of an integrative industry, which combines material resources and intangible factors to meet the needs of modern man for comfortable travel and recreation. Hospitality is interpreted as a complex economic, social, cultural, psychological phenomenon, the impact of which on the development of the tourism industry determines the effect of synergy from the combination of tourist resources and quality of service. The author of article proposes to consider hospitality management as a multilevel dynamic management system for the process of providing services to tourists and vacationers, based primarily on the principles of humanism, tolerance, personalization of hospitality, respect for cultural diversity, priority to meet human needs for quality recreation and physical strength as well as cultural self-development. The social orientation of this system to some extent balances the commercial, purely pragmatic aspect of managing the development of tourism enterprises. A holistic model of hospitality management is based on a harmonious combination of four concepts. They are humanitarian, technological, functional and commercial. The system-forming component of the hospitality sector is a mechanism for managing consumer behaviour, which ensures an optimal balance of supply and demand in the market of hospitality services. The specifics of service in the hospitality industry is that the quality of service affects the emotional perception of tourists in the area and, accordingly, affects the image of the state. Therefore, the mechanism for implementing the service policy should be established through public administration measures. Among the key areas of hospitality management development is the formation of a rational organizational structure, improvement of hospitality marketing and support of corporate culture, the values of which are adequate to the socio-cultural environment of the hospitality industry. The specificity of the hospitality industry is also that an important role in ensuring competitiveness is played by an attractive brand, which stipulates the allocation in the management system of such a component as brand management. Considerable attention should be paid to the innovative development of hospitality enterprises and the constant improvement of professional competence of managers of socio-cultural activities.

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