On the Management Performance of Networked Environments Using Web Services Technologies

We propose a basic innovation to current telecommunication management network (TMN) infrastructures. While management architectural principles and functional models continue to quote the industry-standard TMN didactic statements, no technological innovation promotes them in the real world. The fragmented view and hierarchical nature of the manager-agent paradigm and the lack of a dominant management interoperation technology bring on the issues of exchanging management knowledge between the vertical silos of management system interoperability. The proposed framework conceptually transforms a layered TMN architecture into a simply manageable, distributed 'flat network' while efficiently integrating TMN components and the functions that they perform. The introduction of technologies and standards commonly referred to as 'Web services' into the generalized TMN interface allows TMN management applications to provide complex TMN management services to users easily via user-friendly Web browsers. We further propose the introduction of the purposive agent technology in order to embrace an innovative strategy to manage agent-mediated grid services for a TMN application framework. This leads to a grid-like, cooperative, and purposeful management system with reduced management burden, simplified human intervention, and limited overall complexity. We finally present the prototype implementation of a multiple-agent TMN system. To strengthen the advantages, the grid technology innovation for TMN brings all the operational benefits of a distributed, full service-oriented TMN system, while reducing management expenditures, and time to market for network operators.

While some years ago the focus of many groupware systems has been the support of "Web computing", i.e. to support access with Web browsers, the focus today is shifting towards a programmatic access to "software services", regardless of their location and the application used to manipulate those services. Whereas the goal of "Web computing" has been to support group work on the Web (browser), Web services support for groupware has the goal to provide interoperability between many groupware systems. The contribution is threefold: (i) to present a framework consisting of three levels of Web services for groupware support, (ii) to present a novel Web services management and configuration architecture with the aim of integrating various groupware systems in one overall configurable architecture, and (iii) to provide a use case scenario and preliminary proof-of-concept implementation example. Our overall goal is to provide a sound and flexible architecture for gluing together various groupware systems using Web services technologies.

This paper proposes Web Service based network management. The Web Service based network management system is analyzed. It consists of network management layer, collaborative management implementation layer, and management function layer mainly. The complex management network tasks can be accomplished respectively by more than one Web Service distributed on Internet and the Web Services interchange information based on XML message. The SNMP/XML gateway and the translation between GDMO/ASN.1 and XML/Schema are designed and implemented to implement the integration between the legacy network management systems and the network management developed by Web Service technologies. The service management in Web Service based network management is discussed. Service composition/re-composition in Web Service based network management is analyzed based on the QoS requirements negotiation between the network management requirements and the statement of Web Service and network, OWL-S being used to described the network management requirements to discover the suitable Web Service, BPEL being used to describe the Web Service composition.

Summary form only given. Industry has been wrestling with the complexity of managing business systems for years. The challenge stems from the variety of application and IT resource providers that enterprises use to build their business systems. A range of management systems co-exist to manage the breadth of resources. The management industry and customers have an opportunity to take advantage of the industry trend towards using Web services for business integration and moving to service oriented architectures for business. It is now possible to garner these same advantages seen in business for management. Building manageable resources and management systems on a Web services foundation is going to cause a profound shift in how enterprises and vendors manage their IT resources in the future. Embracing this shift is going to create more flexible IT infrastructures, better integration of business and IT objectives, and greater end to end management of both IT infrastructures and business processes. This presentation provides a bottoms-up tutorial of Web services distributed management (WSDM), the new OASIS Standard that provides the first step in solving this classic management integration problem. The session will begin with an overview of the SOA based management architecture and WSDM's place in that architecture relative to other industry standards and initiatives. The technical tutorial will begin with an introduction on WSDL and WS-addressing, specifications on which WSDM depends. The presenters will build on this with an overview of the Web services for resource framework (WSRF) and Web services notification (WSN) OASIS specifications and discuss how they are used by WSDM. Finally, the session will explore WSDM components, management using WS (MUWS) and WSDM management of Web services (MOWS). MUWS defines how to represent and access the manageability interfaces of any IT resource as Web services. MOWS defines how to manage Web services as resources and how to describe and access that manageability using MUWS. Concrete customer issues solved by WSDM will also be highlighted as well as how CIM modeled resources can be accessed using WSDM. Apache MUSE and IBM Developerworks Toolkits will be used to illustrate the programming techniques

In this paper we present a way of making web services and ontologies work together. We have developed a software that exploits the ontology descriptions of web services in order to help their composition. Our system automatically generates and stores the whole ontology layer in a relational database; within this approach, a sort of caching system is created which, starting from managed web services, creates a knowledge base without continuously convert the Web Service description to its ontology equivalent. We choose to make this logic layer invisible and to let the final user interact with a simple and straightforward graphical interface that both manages the ontology and the actual composition. We will point out pros and cons of using some specific implementations of the state of the art languages that can be used to build such a system, also underlining that we adopt open source solutions only.

Management applications of the Web Service Offerings Language (WSOL)

Web services technologies change the software industry drastically by developing and integrating enterprise web services and applications in order to enable the users to access them. There are several research initiatives in the field of Web services for enterprise applications. However, none of the initiatives have attempted for web applications pertaining to academic institution using Web services technology. Web service composition is the combination of web services from different service providers to create a more sophisticated, value added web service to the web users. Researchers put on efforts to bring out the state-of-the art in web services technologies and security technologies for web services. The composition of web services is another promising area for research and development. A study reveals that there are number of approaches providing secure web services. However, there is no attempt made so far to secure the services at multi-level. This paper proposes a Multi-level Secured Framework (MLSF) for the students, faculty and employees of the academic institutions which provides secured composite web services such as admission service, fees payment service, library service, personalized service and so on. The MLSF enhances the security at various levels such as user level, device level, web services level and institution level.

With the rapid development of Internet, Web Service technology is gradually applied to many areas of life. The security problems occurred in practical applications of Web Service has received more and more attention from the public. Aiming at the security problems existing in the application process of Web Service, a secure real-time internal and external network data exchange method based on Web Service protocol is proposed in this paper, it is agreed that the external network only allows data exchange with the internal network through the Web Service interface, that is, the internal network starts the Web Service service, the external network accesses the service, and then obtains the internal network data or informs the internal network for business processing. Web attack detection is put to the front end to ensure maximum security of Web Service system, which can meet the requirements of more secure and robust web applications while guaranteeing the business security of visitors.

Web service technology (WST) is a service-oriented architecture implementation framework that makes designing component-based internet applications possible. At present, many providers offer their services as web services. Current WST suffers from the lack of an integrated tool to assist web service developers. In WST, the services are published publicly, and their descriptions are stored in service directories. These descriptions contain valuable information about the work of different software teams throughout the world. However, with the increasing number of web services, searching for services is difficult and time-consuming. Furthermore, in current service directories, there is a little knowledge about the services, and extraction of useful information to be utilised by developers is not easy. In this paper, in order to increase the knowledge of what is available in service directories, a structure is presented by interlinking WST entities by using some defined semantic relations. The proposed structure provides a framework and a tool named WSDATool to develop new web services using information from published services or to refine current published web service descriptions. In experiments, services designed with the assistance of the WSDATool are more coherent and well designed.

In service-oriented computing, applications are often created by integrating third-party Web Services. Current integration approaches, however, require client applications to hardcode references to specific Web Services, thereby affecting adaptability and robustness. Moreover, support for client-side management is rarely provided. To enable the development of more flexible and robust applications, we propose to insert a new layer between the client applications and the Web Services: the Web Services Management Layer (WSML). This layer decouples Web Services from client applications and enables hot-swapping between semantically equivalent Web Services based on availability. This mechanism allows for dynamic switching between Web Services based on selection policies that encapsulate changing business requirements. In addition, with WSML, client-side management concerns (e.g., caching, billing and logging) can be decoupled from the applications. In this paper, we identify a list of requirements for WSML to realize dynamic integration and client-side service management, and provide support for service criteria to govern the selection, integration and composition of Web Services. We also show that dynamic Aspect-Oriented Programming (AOP) is well suited to implement the core functionality of WSML.

Enterprises willing to develop Service-Oriented Software (SOS) need to manage their Web Services (WSs) for flexible, agile, quality composition. This paper presents architecture and a specification of a CASE tool for: (1) WSs development and deployment, (2) software composition, and (3) management of WSs, compositions, and the platform on which they run. It specifies the components of the CASE tool architecture that are: (1) a meta-model representing WSs from different perspectives, namely WSs description, legacy systems they wrap, software composed out of them, and their running platform, and (2) a set of management artifacts built on top of the meta-model.

Internet and Mobile technologies have greatly changed our lives in the past decade. However, the power and patentlals of the cambined capabilities offered by these two major inventions remain untapped. This paper looks into how we can turn these capabilities into service components that can be assembled into various composite services and enable people to have a simple way to enjoy camprehensive services anytime, anywhere, anyway with user and context relevance. We will explain in this paper how Web Services technologies and Service Oriented Architecture enables rapidly service creation; and the power of combining web technologies and mobile capabilities for service execution. Tourism is ane vertical industry chosen to apply this Service Provisioning concept. A packaged tour prototype is built to demonstrate the creation and execution of various tour services. These packaged tour services inciude both web and mobile service components and are described in service logic. Utilising the published services co...

The new technology of Web services is beginning to impact the global business approaches and trends in which the services are being offered and consumed. The advancement of Web services and its wide spread use require that its quality of service (QoS) components to be highly dependable and robust. It is clear that one of the major inevitable challenges facing the business organizations today is to provide adequate QoS aspects for Web services. This paper gathers together the various techniques that can be used for measuring and optimizing the major QoS requirements for Web services proposed by the World Wide Consortium (W3C), while presenting a methodology to build QoS-aware Web services. A software model was designed and implemented to test a Web service and perform the experiments to quantitatively measure the QoS requirements involved in a Web service. Various modeling tests and experiments were designed and conducted to illustrate the proposed QoS measurement metrics. The techniques discussed in this paper can be incorporated into the planning, design, implementation, deployment, operational and maintenance phases during a Web service development lifecycle.

Smart grid aims to empower the current power grid with the capability of supporting two-way energy and information flow; and facilitating the integration of advanced computer technology and renewable energy sources into the grid. We assume a smart home with a wireless sensor network based on Zigbee. The smart home contains elements like light or temperature sensors at every room, HVAC (heating, ventilation, and air conditioning), smart appliances, thermostat and smart meter. Furthermore, there is a central computer that can communicate with all these elements. Web service is implemented on central computer and it can be accessed over the internet. The paper proposes an approach that makes use of the web services technologies to remotely interact with smart home elements in a smart grid environment. These interactions include adjusting the temperature according to personal preference or reading energy consumption. Furthermore, utility provider can interact with the smart home via web services and can facilitate demand response or selling energy back to the grid. Some scenarios are shown to describe the interactions in more detail. The performance, advantage and limitations of the radio communications between user (e.g., utility provider) and elements via web services are demonstrated in this paper.

Web Services technologies have over a period of time replaced expensive EDI links and have come to stay as the backbone for collaboration between various enterprises. While currently majority of Web Services are available free, over a period of time increased business dependencies of customers on Web Services are resulting in demands for better Quality of Service. Investments in newer technologies to improve Quality of Service results in increasing Cost of Service, which needs to be offset by revenues. While service providers seek predictability in revenues, customers and users of the Web Services seek flexibility in pricing by not being charged for services not used and service features that are not provided. QoS thus becomes a key determinant of pricing in Web Services. This paper attempts to define a framework for pricing Web Services based on the QoS features provided, the underlying Cost of Service and the level of predictability of revenues that accrue to the service provider based on the transaction volumes of various services. The proposed framework suggests a Subscription-based Pricing for Commoditized Web Services, Transaction-based Pricing for Channelized Web Services and Risk-Based Pricing for Customized Web Services.