scholarly journals Optimal Decomposition of Service Level Objectives into Policy Assertions

2015 ◽  
Vol 2015 ◽  
pp. 1-9
Author(s):  
Yousef Rastegari ◽  
Fereidoon Shams
Keyword(s):  
Customer Satisfaction ◽  
Web Services ◽  
Decomposition Method ◽  
Performance Indicator ◽  
Service Level ◽  
Quality Aspects ◽  
Run Time ◽  
Service Level Objectives ◽  
Securities Settlement

WS-agreement specifies quality objectives that each partner is obligated to provide. To meet quality objectives, the corresponding partner should apply appropriate policy assertions to its web services and adjust their parameters accordingly. Transformation of WS-CDL to WSBPEL is addressed in some related works, but neither of them considers quality aspects of transformation nor run-time adaptation. Here, in conformance with web services standards, we propose an optimal decomposition method to make a set of WS-policy assertions. Assertions can be applied to WSBPEL elements and affect their run-time behaviors. The decomposition method achieves the best outcome for a performance indicator. It also guarantees the lowest adaptation overhead by reducing the number of service reselections. We considered securities settlement case study to prototype and evaluate the decomposition method. The results show an acceptable threshold between customer satisfaction—the targeted performance indicator in our case study—and adaptation overhead.

Case Study II

2009 ◽  
pp. 243-268
Author(s):  
Matthew Guah
Keyword(s):  
Airline Industry ◽  
Business Strategy ◽  
Direct Relationship ◽  
Service Industry ◽  
Performance Indicator ◽  
New Technology ◽  
Service Level ◽  
Commercial Airline ◽  
Selection Factors

VLITP can shift the direction of organizations by introducing new systems and emerging technologies that can serve as a trigger for change to the entire business strategy of an organization. Using VLITP simply for creating new possibilities, new markets, or enabling existing alternatives to be reachable can also trigger much needed change. The implementation of a new technology like RFID implies a direct relationship between business and IT—something that has become of increased importance in the last decade. Airlines are a vital part of the service industry, focusing on the transportation of people, their luggage, and goods from one point to another. RFID brought into the airline industry a system that tracks the location of passengers’ luggage, directly impacting the level of service an airline can provide its customer. RFID introduced new possibilities in luggage handling that are beginning to impact the entire airline industry. In the commercial airline industry, where fiercely competition has been well established, customer satisfaction and service level are important selection factors for passengers. Like its predecessor—the barcode system—RFID tracks luggage and is used to identify which baggage belongs to which customer but using a different technique to do so. RFID, being a lot more accurate then the barcode system, makes the decision by an airline to implement it a move to establish its critical performance indicator.

Design of Quality Aspects in Service Oriented Architecture through Service Level Agreements

2011 ◽  
pp. 1-21
Author(s):  
Marco Massarelli ◽  
Claudia Raibulet ◽  
Daniele Cammareri ◽  
Nicolò Perino
Keyword(s):  
Service Oriented Architecture ◽  
Service Level ◽  
Application Domain ◽  
Service Level Agreements ◽  
Actual Case ◽  
Service Oriented Architectures ◽  
Quality Aspects ◽  
Service Oriented

This chapter gives a solution to design Service Oriented Architectures which defines and manages Service Level Agreements to enforce Quality of Services and achieves adaptivity at runtime. The validation of this proposed approach is performed through an actual case study in the context of the multimedia application domain.

Parallelizing Web Service Upload \ Download files

2018 ◽  
Vol 8 (3) ◽  
pp. 15
Author(s):  
Mustapha Mohammed Baua'a
Keyword(s):  
Web Services ◽  
Response Time ◽  
Web Service ◽  
File System ◽  
Programming Environment

The I\O file system Read\Write operations are considered the most significant characteristics. Where, many researchers focus on their works on how to decrease the response time of I\O file system read\write operations. However, most articles concentrate on how to read\write content of the file in parallelism manner. Here in this paper, the author considers the parallelizing Read\Write whole file bytes not only its contents. A case study has been applied in order to make the idea more clear. It talks about two techniques of uploading\downloading files via Web Service. The first one is a traditional way where the files uploaded and downloaded serially. While the second one is uploaded\ downloaded files using Java thread in order to simulate parallelism technique. Java Netbeans 8.0.2 have been used as a programming environment to implement the Download\Upload files through Web Services. Validation results are also presented via using Mat-lab platform as benchmarks. The visualized figures of validation results are clearly clarifying that the second technique shows better response time in comparison to the traditional way.

What Matters to South African Bank Customers? A Case Study of four Main South African Banks

2015 ◽  
Vol 6 (1and2) ◽  
Author(s):  
Kingstone Mutsonziwa
Keyword(s):  
Customer Satisfaction ◽  
South African ◽  
Language Usage ◽  
Face To Face ◽  
Bank Resolution ◽  
African Context ◽  
Key Drivers ◽  
Investment Advice

This paper is a follow-up article based on the first article titled Customers speak for themselves: A case of Customer Satisfaction in the four Main South African Banks. Customer satisfaction within the banking industry is very important in the South African context. Although banks are trying their best to give their customers the best service, it is important to continuously measure customer satisfaction and identify service attributes that contribute to overall customer satisfaction for the banks. The data used in the analysis is based on a quantitative survey of 500 randomly selected customers in Pretoria, Johannesburg, Durban and Cape Town were interviewed using a face to face methodology. The key drivers of overall customer satisfaction based on regression analysis for the different banks were helpfulness and innovativeness (ABSA), helpfulness, innovativeness of the bank, resolution of problems and investment advice (FNB), language usage and friendliness of service consultants (Nedbank), innovativeness of the bank, investment advice and use of language (Standard bank). These attributes were important to the overall customer satisfaction and need to be closely monitored by the management of these banks.

Carnival Corporation: The Challenges of Cutting Costs While Maintaining Quality and Customer Satisfaction

2018 ◽  
pp. 1-16
Author(s):  
Dick Verbeek
Keyword(s):  
Supply Chain ◽  
Supply Chain Management ◽  
Customer Satisfaction ◽  
Customer Service ◽  
Chain Management ◽  
Cruise Line ◽  
Management Issues

This case study has been developed to facilitate discussion about current supply chain management issues and potential solutions. The scenario presented in this case is very representative of the pressures experienced by supply chain managers. Namely, the need to reduce costs while maintaining quality and customer service. This case presents some unusual challenges and constraints that are unique to the cruise line industry. These constraints can provide an opportunity to explore new supply chain paradigms.

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