Paweł Świątek

MODELING AND OPTIMIZATION OF COMPLEX SERVICES IN SERVICE-BASED SYSTEMS

Service-based approaches have significantly extended client server applications and allow to assemble a variety of components, services, and systems into multi-tier applications, flexibly supporting increasing business needs and requirements. Deployment of applications, composed of application components and services available in a distributed, heterogeneous environment, highly increased the complexity of systems offering complete, collaborative, continuous, and constraint-free solutions. The aim of this article is to present a model of complex services composed of atomic services available in different versions and offered in a heterogeneous environment. The purpose of the introduced model is to provide a framework to analyze access limitations, services costs, security, and resource constraints, i.e., tasks that must be proactively monitored and resolved in distributed, networked systems. The introduced model is applied to formulate a complex services selection and optimization tasks taking into account different strategies assuring quality of services.

Dynamic Resources Allocation for Delivery of Personalized Services

The aim of this paper is to introduce a problem of e-health services quality management. The process of delivering e-health services to users consists of two major tasks: service personalization and resources allocation. In this paper we introduce a use-cases of e-health system and distinguish services that can be offered. In order to satisfy user requirements one have to manage resources properly especially when communication conditions change (e.g. in an ambulance). An exemplary solution has been presented and conclusions for further work have been formulated.

Supporting content, context and user awareness in future internet applications

We show how the applications utilizing a Future Internet architecture can benefit from its features like quality of service (QoS) provisioning and resources reservation.We demonstrate, how proposed applications address content, context and user awareness basing on the underlying Next Generation Network (NGN) infrastructure and how it can be used to host service-based applications.

ADAPTIVE DECISION SUPPORT SYSTEM FOR AUTOMATIC PHYSICAL EFFORT PLAN GENERATION: DATA-DRIVEN APPROACH

Mathematical models delivered using both expert knowledge and experimental data improve understanding of dynamic properties of the system under consideration. This is useful for different purposes, such as prediction, diagnosis, decision making, and system control. A data-driven approach has been found to be particularly useful in designing adaptive decision support systems. We demonstrate the usefulness of data-driven models in a custom application designed for sport training management. We have developed a system that makes use of expert knowledge together with measurement data (heart rate, electromyography, and acceleration) as well as environmental (Global Positioning System) in order to generate an optimal training plan. The system performs such tasks as modeling of the athletes cardiovascular system, estimation of the athletes parameters, and adaptation of the model to the athlete.

Smart work workbench; integrated tool for IT services planning, management, execution and evaluation

Smart Service Workbench (SSW) is an integrated tool devoted to support business processes in distributed IT environment based on Service Oriented Architecture (SOA) paradigm. The tools scope of functionalities is divided into modules that cover the whole process starting from the arrival of service request and ending with a return results of request. The latter is assumed to be a service composed of well-defined components available in predefined and staging repository. The tools modules are responsible for requirements analysis, services choice or service composition, communication and computational resources allocation in distributed environment as well as for resources utilization monitoring to services quality and security evaluation purposes.

Planning-Based Method for Communication Protocol Negotiation in a Composition of Data Stream Processing Services

Data streaming is often used for video and sensor data delivery, nowadays gaining in popularity along with the development of mobile devices. In this paper we briefly describe a platform for automated composition of distributed data stream processing services. It decreases the complexity of composite service building process from the users point of view by introducing automation mainly in appropriate service selection and their communication protocols negotiation. This paper is focused on automated negotiation of communication protocols, which will be further used to transfer data among services. Data stream processing services are designed independently, often with many possible communication methods and not pointing directly to other services. With the use of the platform, they can be loosely coupled, forming a composite service od-demand. We present several approaches to communication protocol negotiation in a composition of data stream processing services and introduce planning-based approach. Finally, we discuss consequences of various approaches on an example composite service from image processing domain.

USER ASSIGNMENT AND MOVEMENT PREDICTION IN WIRELESS NETWORKS

The article is devoted to the problem of mobility and resource management in heterogeneous wireless networks. It is assumed that in certain areas covered by multiple overlapping wireless networks there are a certain number of mobile clients that consume networks resources by use of the available communication services (e.g., voice or data transmission) delivered by network providers. Moreover, it is assumed that the continuity of communication services may be assured by the use of common handover techniques supporting client mobility (e.g., Mobile IPv6, IEEE 802.21, etc.). The task of mobility and resource management consists of making decisions concerning the moment and the network to which particular clients should be handed over in order to optimize certain quality criterion (e.g., utilization of network resources). In this article we show that gathering knowledge about client movements and prediction of their future positions may significantly improve the overall quality of the services delivered and network resource utilization.

Methodology and Platform for Business Process Optimization

The paper gains is to present a proposed attempt (Business Process Optimization Methodology) to select proper analysis, planning and optimization methods for resource management in the domain-information systems, and, being in the development phase, Business Process Optimization Platform (BPOP), which is an implementation of the proposed Business Process Optimization Methodology (BPOM) logic. The paper addresses an innovative and unique functionality of the introduced solution, including automatic planning, adaptation and optimization of the logical architecture of the domain information systems, the use of reusable software components (services) as well as resulting from the adopted attempt availability to obtain quickly the first results of the analysis and optimization of domain-specific processes.

Specifications and Deployment of SOA Business Applications Within a Configurable Framework Provided as a Service

This chapter presents the concept of development and management of SOA applications within the configurable service platform which supports all phases starting from business process definition. The unique features of the platform include: business process compatibility, easy reconfiguration of composition schemes, visual support for requirements and service definition, QoS assessment (including communication services) and service execution control. Moreover, it illustrates how effective tools for SOA management may be developed within the SOA paradigm itself, and how this paradigm may be used to achieve their interoperability and flexibility.

Wearable smart system for physical activity support

Wearable smart systems that measure and process a human vital sings have become important tool in eHealth, rehabilitation and recreation. This research was about to develop a system that aims to support recreational physical activity by delivering communication and computational services. The system architecture facilitates implementation of advanced data processing methods in the form of computational services and easily include additional services according to the user needs. An eHealth application was developed to demonstrate the system capabilities. The application makes use of expert’s knowledge together with measurement data in order to generate the optimal training plan. The system performs such tasks as: modelling of the sportsmen’s cardiovascular system, estimation of the sportsmen’s parameters, adaptation of the model to the sportsmen.