Game theoretical models for cloud federations

2019 ◽  
Author(s):  
◽  
Ahmad Tarek Hammoud
Keyword(s):  
Quality Of Service ◽  
Real World ◽  
Virtual Machines ◽  
Evolutionary Game ◽  
Theoretical Models ◽  
Cloud Federation ◽  
Cloud Providers ◽  
Total Profit ◽  
Main Factors

Cloud federation is an architecture that allows cloud providers to make use of their unallocated virtual machines, by combining their resources to serve a pool of cloud consumers whose requests cannot be handled by any of these providers alone. A client is willing to rent computing resources from the cloud providers or federations due to the advantages they can provide. The quality of service (QoS) is one of the main factors that attracts or discourages the clients from renting such services. What complicates the process is having the actual QoS delivered being worse than the promised QoS. Such could lead to the client changing federation, and the latter getting dissociated. Some of the main reasons that could result in worsening the QoS are encountering passive malicious cloud providers after the federation formation, and having unstable federation formation. In this thesis, we present solutions for such problems in order to increase the lifespan of the formed federations, by introducing a maximin game to prevent the malicious providers from accomplishing their wicked schemes without getting penalized, and advancing a genetic and an evolutionary game theoretical models for the federation formation process to bypass the dynamicity boundaries. Experiments conducted using CloudHarmony real-world dataset revealed that both of our solutions were able to increase the total profit obtained by the federations and ameliorate the QoS delivered, granting the cloud consumer a great experience with the service.

scholarly journals Historic and geographic peculiarities of the hotel sphere development in Lviv

2013 ◽  
pp. 53-63
Author(s):  
Nataliya Hanych
Keyword(s):  
Quality Of Service ◽  
Key Words ◽  
Future Development ◽  
Services Quality ◽  
Historical Background ◽  
Main Factors ◽  
Time Periods ◽  
Lodging Services ◽  
Architectural Planning

The historic preconditions of the lodging sites development are analyzed. The historic periods in the hotel sphere development are described. The main factors that lead to the formation and development of the hotel establishments are singled out. The development of services, quality of service, features of hotels architectural planning is characterized. The historic references on the first hotels in Lviv are submitted. The development of accommodation facilities in different time periods is traced. The influence of the historical background on the development of hotel infrastructure is analyzed. The recommendations on the future development of hotel infrastructure in Lviv are worked out. Key words: lodging, accommodation, lodging services.

Optimum Volume of Freeway Corridors

2020 ◽  
Vol 2674 (3) ◽  
pp. 27-36
Author(s):  
Siavash Shojaat ◽  
Justin Geistefeldt ◽  
Brian Wolshon
Keyword(s):  
Quality Of Service ◽  
Real World ◽  
Flow Index ◽  
Traffic Demand ◽  
Probability Of Survival ◽  
Freeway Corridors ◽  
Freeway Corridor ◽  
Different Characteristics ◽  
Optimum Volume

Conventional methods to assess the quality of service on freeways are based on the comparison of a specific peak hour traffic demand to the capacity of the facility, which is usually measured at a single uniform bottleneck section. However, estimating the quality of service of one bottleneck section may not be sufficient to assess the performance of an entire freeway facility. A driver traveling along a freeway corridor may actually encounter multiple flow breakdowns at independent bottleneck sections, which affect the overall quality of service. This paper introduces a comprehensive approach that considers an entire freeway corridor as a system consisting of successive independent bottlenecks with different characteristics, and can be used to estimate the optimum sustainable volume. The methodology is based on the sustained flow index, which is defined as the product of traffic volume and the probability of survival at this volume. Optimum volumes of two real-world corridors are estimated based on the new derivations. The empirical results reveal that the optimum volume and the capacity of an entire corridor is less than those of its most restrictive bottleneck.

scholarly journals Analysis and Design of Advance Scalable QoS Based Resource Provisioning Framework

2021 ◽  
Author(s):  
Pallavi Shelke ◽  
Rekha Shahapurkar
Keyword(s):  
Quality Of Service ◽  
Resource Provisioning ◽  
Analysis And Design ◽  
Qos Parameters ◽  
Cloud Providers ◽  
Quality Of Service Parameters ◽  
Load Balancer ◽  
Resource Scheduler ◽  
Cloud User

In today’s growing cloud world, where users are continuously demanding a large number of services or resources at the same time, cloud providers aim to meet their needs while maintaining service quality, an ideal QoS-based resource provisioning is required. In the consideration of the quality-of-service parameters, it is essential to place a greater emphasis on the scalability attribute, which aids in the design of complex resource provisioning frameworks. This study aims to determine how much work is done in light of scalability as the most important QoS attribute. We first conducted a detailed survey on similar QoS-based resource provisioning proposed frameworks/techniques in this article, which discusses QoS parameters with increasingly growing cloud usage expectations. Second, this paper focuses on scalability as the main QOS characteristic, with types, issues, review questions and research gaps discussed in detail, revealing that less work has been performed thus far. We will try to address scalability and resource provisioning problems with our proposed advance scalable QoS-based resource provisioning framework by integrating new modules resource scheduler, load balancer, resource tracker, and cloud user budget tracker in the resource provisioning process. Cloud providers can easily achieve scalability of resources while performing resource provisioning by integrating the working specialty of these sub modules.

scholarly journals An Attribute-Oriented Task Scheduling Strategy for Improvement of Quality of Service in Cloud Computing

2021 ◽  
Author(s):  
Jianying Miao
Keyword(s):  
Cloud Computing ◽  
Quality Of Service ◽  
Task Scheduling ◽  
Virtual Machines ◽  
Cloud Environment ◽  
Simulation Environment ◽  
Attribute Matching ◽  
Resource Allocation Strategy ◽  
And Task

This thesis describes an innovative task scheduling and resource allocation strategy by using thresholds with attributes and amount (TAA) in order to improve the quality of service of cloud computing. In the strategy, attribute-oriented thresholds are set to decide on the acceptance of cloudlets (tasks), and the provisioning of accepted cloudlets on suitable resources represented by virtual machines (VMs,). Experiments are performed in a simulation environment created by Cloudsim that is modified for the experiments. Experimental results indicate that TAA can significantly improve attribute matching between cloudlets and VMs, with average execution time reduced by 30 to 50% compared to a typical non-filtering policy. Moreover, the tradeoff between acceptance rate and task delay, as well as between prioritized and non-prioritized cloudlets, may be adjusted as desired. The filtering type and range and the positioning of thresholds may also be adjusted so as to adapt to the dynamically changing cloud environment.

scholarly journals Predicting the Perception of SMEs on the Selection of Bank Decision in Pakistan: A Partial Least Square (PLS) Model

2021 ◽  
Vol 5 (1) ◽  
pp. 309-320
Author(s):  
Zafar Iqbal ◽  
Dr. Saima Batool ◽  
Dr. Muhammad Khalique ◽  
Dr. Mushtaq A. Sajid
Keyword(s):  
Quality Of Service ◽  
Sampling Technique ◽  
Partial Least Square ◽  
Least Square ◽  
Independent Variables ◽  
Selection Decision ◽  
Main Factors ◽  
Selection Of ◽  
Structured Questionnaire

The main objective of this study was to examine the main factors which may have influence on the bank selection decision in Pakistan. Quality of service, quality of service provider, interaction dimensions and relationship image recommendations experience were employed as independent variables while the bank selection decision SMEs was used as a dependent variable. The data were gathered through structured questionnaire survey. A total of 300 questionnaires were distributed to the targeted respondents while 223 were involved in the study. The respondents were selected through purposive sampling technique. Four research hypotheses were established. Smart Partial Least Square (PLS) 3 was used to test the proposed research hypotheses. The empirical findings of this study showed that the four research hypotheses were supported. This is the first study in Pakistan to address this issue.

scholarly journals Priority-Based Virtual Machine Selection Algorithm in Cloud Computing

2019 ◽  
Vol 8 (3) ◽  
pp. 1457-1462
Keyword(s):  
Cloud Computing ◽  
Quality Of Service ◽  
Virtual Machine ◽  
Virtual Machines ◽  
Service Level Agreement ◽  
Cloud Service ◽  
Service Level ◽  
Cloud Services ◽  
Cloud Service Provider

Cloud computing technology has gained the attention of researchers in recent years. Almost every application is using cloud computing in one way or another. Virtualization allows running many virtual machines on a single physical computer by sharing its resources. Users can store their data on datacenter and run their applications from anywhere using the internet and pay as per service level agreement documents accordingly. It leads to an increase in demand for cloud services and may decrease the quality of service. This paper presents a priority-based selection of virtual machines by cloud service provider. The virtual machines in the cloud datacenter are configured as Amazon EC2 and algorithm is simulated in cloud-sim simulator. The results justify that proposed priority-based virtual machine algorithm shortens the makespan, by 11.43 % and 5.81 %, average waiting time by 28.80 % and 24.50%, and cost of using the virtual machine by 21.24% and 11.54% as compared to FCFS and ACO respectively, hence improving quality of service.

scholarly journals Factors Influencing Reader Satisfaction and Quality of Service in Modern Libraries

2021 ◽  
pp. 15-20
Author(s):  
Kazimi Parviz Firudin Oqlu ◽  
Azad Qurbanov
Keyword(s):  
Quality Of Service ◽  
Customer Satisfaction ◽  
Satisfaction Index ◽  
Customer Satisfaction Index ◽  
Factors Influencing ◽  
New Information ◽  
Main Factors

The article examines the factors influencing the overall satisfaction of readers and the quality of service in order to identify the strengths and weaknesses of the library and information activities of Azerbaijan. The research was carried out on the basis of the "SERVQUAL" model. The Customer Satisfaction Index (CSI) was calculated, evaluated on a 7-point Laykert scale for 5 dimensions and a “threshold” index was determined. Based on the analysis of the results obtained, the ergonomic environment, the provision of new information, the professionalism of the staff and openness to managerial innovations were identified as the main factors influencing the satisfaction of readers and the quality of service.

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