scholarly journals Web Services Quality Assurance: A XML-Based Quality Model

2007 ◽  
Author(s):  
José Jorge L. Dias Jr. ◽  
José Adson O. G. da Cunha ◽  
Alexandre Álvaro ◽  
Roberto S. M. de Barros ◽  
Silvio Romero de Lemos Meira
Keyword(s):  
Web Services ◽  
Services Quality ◽  
Quality Model ◽  
Certification Process ◽  
Effective Evaluation ◽  
Proposed Model ◽  
Development Approach ◽  
Available Information ◽  
The Web

The task of reusing Web services that meet quality attributes requirements is a challenging issue in service-based development approach. In such a context, a quality model can provide the means to effectively evaluation of services, enabling the certification of these services. In this sense, this paper proposes a quality model based on the ISO 9126 standard, defining a set of attributes and metrics for an effective evaluation of Web services. A XML-based representation and security schema for the model was created to support a service certification process. Moreover, a preliminary case study was elaborate in order to verify the gap between the proposed model and the available information by the Web services providers.

The Future of Portals in E-Science

2011 ◽  
pp. 413-418 ◽  
Author(s):  
Andrea Bosin ◽  
Nicoletta Dessì ◽  
Maria Grazia Fugini ◽  
Diego Liberati ◽  
Barbara Pes
Keyword(s):  
Web Services ◽  
Information And Communication Technologies ◽  
Communication Technologies ◽  
Organizational Dynamics ◽  
Grid Structure ◽  
Scientific Experiments ◽  
Information And Communication ◽  
Cooperative Enterprise ◽  
The Web

Scientific experiments are executed through activities that create, use, communicate and distribute information whose organizational dynamics are similar to processes performed by distributed cooperative enterprise units. On this premise, the aim of this article is to discuss how a portal-based approach can support the design and management of cooperative scientific experiments executed with a strong information and communication technologies (ICT) support and in a distributed manner, hence named e-experiments. The approach assumes the Web, Web services and the grid as the enacting paradigm for formalizing e-experiments as cooperative services on various computational nodes of a network. A framework is proposed that defines the responsibility of actors of the e-experiment and of the e-nodes in offering services, as well as the portal architecture through which the e-experiment resources can be accessed. By discussing a case study in the field of bioinformatics, the article shows how an e-experiment can be planned and executed starting from a set of Web services inserted in a portal and invoked upon the possibly underlying grid structure.

A Framework for Semantic Grid in E-Science

2009 ◽  
pp. 235-240
Author(s):  
Diego Liberati
Keyword(s):  
Web Services ◽  
Open Source ◽  
Organizational Dynamics ◽  
Semantic Grid ◽  
Collaborative Environment ◽  
Cooperative Enterprise ◽  
Open Source Systems ◽  
The Web ◽  
Generally True

A framework is proposed that creates, uses, and communicates information, whose organizational dynamics allows performing a distributed cooperative enterprise in public environments, even over open source systems. The approach assumes the web services as the enacting paradigm possibly over a grid, to formalize interactions as cooperative services on various computational nodes of a network. The illustrated case study shows that some portions, both of processes and of data or knowledge, can be shared in a collaborative environment, which is also more generally true for any kind of either complex or resource demanding (or both) interaction that will benefit any of the approaches.

Trapping Runtime Faults from Web Service Fault Ontology

2020 ◽  
Vol 17 (8) ◽  
pp. 3759-3764
Author(s):  
K. Jayashree
Keyword(s):  
Web Services ◽  
Web Service ◽  
Service Users ◽  
Intended Behavior ◽  
Proposed Model ◽  
Different Types ◽  
Service Application ◽  
Common Understanding ◽  
Types Of Faults ◽  
The Web

The ontology offers a clear considerate of the runtime faults in web services and helps to share this common understanding with users and applications. This paper presents Web Service Fault Ontology and to trap the runtime faults from the Web Services Fault Ontology. Web Service Fault Ontology has been developed to represent the different types of faults that can occur during the interactions between service users, service publishers and service registries: publishing, discovery, binding and execution of web services. Ontology has been proposed to define the intended behavior of web services from the service provider. A sample web service application was developed for testing the proposed model.

scholarly journals Multi-Tier Framework for Management of Web Services' Quality

2011 ◽  
pp. 1745-1767
Author(s):  
Abdelghani Benharref ◽  
Mohamed Adel Serhani ◽  
Mohamed Salem ◽  
Rachida Dssouli
Keyword(s):  
Web Services ◽  
Web Service ◽  
Services Quality ◽  
Composite Web Service ◽  
The Web

Web services are a new breed of applications that endorse large support from main vendors from industry as well as academia. As the Web services paradigm becomes more mature, its management is crucial to its adoption and success. Existing approaches are often limited to the platforms under which management features are provided. In this chapter, we propose an approach to provide a unique central console for management of both functional and nonfunctional aspects of Web services. In fact, we aim at the development of a framework to provide management features to providers and clients by supporting management activities all along the lifecycle. The framework allows/forces providers to consider management activities while developing their Web services. It allows clients to select appropriate Web services using different criteria (e.g., name, quality, etc.). Clients also make use of the framework to check if the Web services they are actually using or planning to use are behaving correctly. We evaluate the Web services management features of our framework using a composite Web service.

scholarly journals Online web navigation assistant

2021 ◽  
Vol 31 (1) ◽  
pp. 116-131
Author(s):  
N.M. Ali ◽  
A.M. Gadallah ◽  
H.A. Hefny ◽  
B.A. Novikov
Keyword(s):  
Information Overload ◽  
Specific Weight ◽  
The Internet ◽  
Fully Integrated ◽  
Web Navigation ◽  
Proposed Model ◽  
Alternative Approaches ◽  
Available Information ◽  
The Web ◽  
Online Web

The problem of finding relevant data while searching the internet represents a big challenge for web users due to the enormous amounts of available information on the web. These difficulties are related to the well-known problem of information overload. In this work, we propose an online web assistant called OWNA. We developed a fully integrated framework for making recommendations in real-time based on web usage mining techniques. Our work starts with preparing raw data, then extracting useful information that helps build a knowledge base as well as assigns a specific weight for certain factors. The experiments show the advantages of the proposed model against alternative approaches.

scholarly journals SERVICE-ORIENTED DESIGN: A MULTI-VIEWPOINT APPROACH

2004 ◽  
Vol 13 (04) ◽  
pp. 337-368 ◽  
Author(s):  
REMCO DIJKMAN ◽  
MARLON DUMAS
Keyword(s):  
Web Services ◽  
Control Flow ◽  
Proof Of Concept ◽  
Static Verification ◽  
Verification Tool ◽  
Proposed Model ◽  
Service Oriented ◽  
Composite Services ◽  
Interface Behaviour ◽  
The Web

As the technology associated with the "Web Services" trend gains significant adoption, the need for a corresponding design approach becomes increasingly important. This paper introduces a foundational model for designing (composite) services. The innovation of this model lies in the identification of four interrelated viewpoints (interface behaviour, provider behaviour, choreography, and orchestration) and their formalization from a control-flow perspective in terms of Petri nets. By formally capturing the interrelationships between these viewpoints, the proposal enables the static verification of the consistency of composite services designed in a cooperative and incremental manner. A proof-of-concept simulation and verification tool has been developed to test the possibilities of the proposed model.

scholarly journals CALIBRATION OF WATER‐QUALITY MODEL “WODA” – CASE STUDY OF THE WARTA RIVER

2007 ◽  
Vol 15 (2) ◽  
pp. 93-98 ◽  
Author(s):  
Marek Sowinski ◽  
Anna Neugebauer
Keyword(s):  
Parameter Estimation ◽  
Data Model ◽  
Model Simulation ◽  
Least Square ◽  
Automatic Calibration ◽  
Quality Model ◽  
Concentration Data ◽  
Measured Concentration ◽  
Proposed Model

The main feature of the proposed model implemented by a computer package WODA, that distinguishes it from other commonly used models like QUALE 2E or WASP5, is a possibility of its automatic calibration i e parameter estimation taking into account simultaneously several sets of measured concentration data. Model WODA, developed by A. Kraszewski and R. Soncini‐Sessa, enables fitting simulated values to measured concentrations of BOD and DO based on the least‐square criterion. This model was applied for parameter estimation of the Warta River in Poland. Measured concentration data used for parameter estimation were obtained from monthly monitoring. The results are presented in the form of BOD and DO lines against measured concentrations along the analysed stretch of the Warta River. Adaptation of the model simulation results to measured data is described by quantifying characteristics. They indicate relatively good adjustment. The reasons of some differences are discussed and explained.

Building an Online Security System with Web Services

2005 ◽  
pp. 371-397
Author(s):  
Richard Y.R. Wu ◽  
Mahesh Subramanium
Keyword(s):  
Software Engineering ◽  
Web Services ◽  
Security System ◽  
Online Security ◽  
Security Technologies ◽  
User Centric ◽  
Technical Challenges ◽  
Practical Experiences ◽  
The Web

This chapter presents a case study where Web services are used to build a user-centric online security system. It explores complex technical challenges encountered with the use of the Web services and online security technologies. Furthermore, the authors hope that their practical experiences and findings will shed some lights on how the online security system should and can be built in the approach of being user-centric instead of vendor-centric and on the implications of embracing Web services to conventional software engineering processes.

A Proposed SOAP Model in WS-Security to Avoid Rewriting Attacks and Ensuring Secure Conversation

2018 ◽  
Vol 12 (1) ◽  
pp. 74-88 ◽  
Author(s):  
Rajni Mohana
Keyword(s):  
Web Services ◽  
Service Oriented Architecture ◽  
Message Processing ◽  
Proposed Model ◽  
Xml Signature ◽  
Service Oriented ◽  
Soap Message ◽  
Shared Key ◽  
A Current ◽  
The Web

Service oriented architecture is a current and popular software engineering paradigm providing agile web services to consumers in a dynamically changing enterprise environment. The SOAP messages are used to establish communication between the web services which are vulnerable to rewriting attacks and insecure conversation. XML Signature as specified in WS-Security provides security to the contents of the SOAP messages but is insufficient. This paper proposes a SOAP model where rewriting attacks can be avoided and a secure conversation can be established as well. This paper recommends three steps, firstly using shared key for encrypting timestamp in the message body for generating corresponding signature; Secondly, using value referencing both for signature validation and message processing; and finally encrypting the whole SOAP body instead of sending an open SOAP Message in the network to prevent unauthorized access. The paper concludes that the proposed model successfully detects rewriting attacks and establishes secure conversation in the to-and-fro message transmission.

scholarly journals Ethical challenges in online research: Public/private perceptions

2016 ◽  
Vol 13 (3-4) ◽  
pp. 184-199 ◽  
Author(s):  
Lisa Sugiura ◽  
Rosemary Wiles ◽  
Catherine Pope
Keyword(s):  
Digital Data ◽  
Online Research ◽  
Ethical Challenges ◽  
Online Forums ◽  
Ethical Guidelines ◽  
Doctoral Research ◽  
Available Information ◽  
Privacy And Anonymity ◽  
The Web

With its wealth of readily and often publicly available information about Web users’ lives, the Web has created new opportunities for conducting online research. Although digital data are easily accessible, ethical guidelines are inconsistent about how researchers should use them. Some academics claim that traditional ethical principles are sufficient and applicable to online research. However, the Web poses new challenges that compel researchers to reconsider concerns of consent, privacy and anonymity. Based on doctoral research into the investigation of online medicine purchasing, this article presents a case study involving online forums, and reviews the existing ethical guidance surrounding the Web. The suggestion is that new ethical guidelines, particularly in relation to informed consent and participants’ own perceptions of what is public or private, are needed owing to the unique challenges of online research.

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