Luigi Ubezio

Components in an adaptive and QoS-based architecture

This paper aims to present the main software components we have developed in the context of the ARM (Adaptive Resource Management) project at University of Milano-Bicocca for an adaptive, distributed, service-oriented architecture. The goal of ARM is to manage the resources of a system in a way that enables it to dynamically identify and execute services on the available resources. Our approach chooses the most appropriate resource that is able to execute a service with the requested qualities of service (QoSs). To achieve adaptivity, ARM uses reflection at the architectural level. Exploiting the reflective representation of the systems resources and their related QoSs, ARM may organize them accordingly to various criteria and evaluate them based on their QoSs features and their potentiality in executing a requested service with the requested QoSs. To validate the ARM concepts, a prototype based on the peer-to-peer paradigm is currently under development. It aims to provide an adaptive support when using the resources available in our department.

Risk assessment in work environments: modeling and simulation

The paper proposes a characterization of risks and a service‐oriented prototype to face risky situations in work environments, such as in industrial plants or building construction areas. A risk is the overture of emergencies that produce human and/or material damages. Therefore, it is particularly critical to identify and manage risks to avoid their evolution into emergencies. In this paper, we outline the technological features of a risk environment and propose a risk model and a service‐based simulation prototype aimed to improve safety in work environments. We discuss engineering issues concerning risk modeling and management. Furthermore, we propose a risk management system solution and its related implemented prototype composed of services able to detect and also to prevent the occurrence of risk conditions. Copyright

Wearable Services in Risk Management

In this paper, the key ideas of ambient intelligence, wearable objects and service-oriented computing are combined so that appliances and devices can disappear and become part of the work garments and environment of the individual and, as an effect, services emerge to face risky situations through reaction to alarms and to perform risk management. Along this line, we outline the features of a wearable-based services system aimed at improving safety in work places.

Risk characterization and prototyping

The paper proposes a characterization of risk and a service-oriented prototype to face emergencies situations in industrial environments. We outline the technological features of a risk environment and a service system aimed at improving safety in work places. To achieve this goal we overview technologies and discuss engineering issues related to risk modeling. A prototype architecture of a Risk Management System is presented, composed of layered services able to detect (corrective behavior) and to prevent (pro-active behavior) the occurrence of risk conditions in work contexts.

Risk Management through Real-Time Wearable Services

In this paper, we propose an approach to face emergencies and risky situations through real-time wearable services in industrial environments. We outline the social and technological features of a wearable-based service system, which aims to improve safety in workplaces. To achieve this goal, we propose a system composed of real-time wearable services constituting a platform able to prevent the occurrence of emergency and/or unsafe conditions in work contexts. After the presentation of the related work, the paper introduces the most significant social and technological aspects of the risk management. Furthermore, attention is focused on the modeling guidelines we have identified for the architectural approach which exploits the core concepts of the service-oriented paradigm.

Management of Multi-services Structures Through an Access Control Framework

This paper aims to present an architectural model designed to manage the information related to a multi-functional structure offering various types of services through an access control framework. It describes several implementation details of our prototype focusing on the emerging technologies based on radio frequency identification approaches exploited to reveal the presence of customers inside a multi-functional area.

Reflections on Web-Oriented Architectures for Risk Management

One of the challenging topics to address through the advances made in information technology domain is the management of risk in work environments. This is due to the heterogeneity of issues which should be considered such as technological and social just to name two of the most important ones. In this context the key ideas of Web-enabled architectures are approached to face emergencies and risky situations in work places. In the present paper we outline an architectural model based on the Web technology which includes wearable-based services in order to improve safety in work environments. Moreover, we discuss several technological and social features related to the proposed solution.

A Web-service architectural perspective on Risk Management in work environments

This paper provides a Web-service based software architectural perspective on the design of systems able to identify; and solve risky situations that may occur in work environments. The technological and computational advances in the IT world (e.g., service-oriented, wearable services) may provide a significant support for the management of risks, and implicitly the reduction of the accidents in the work environment. This paper discusses how a Web-service architecture can be implemented for a Risk Management System. In this context, the Web-based technologies and solutions are fundamental for the access of critical information, communication of the main decisions, and contact of the actors of the system from anywhere and from any type of device.

Leveraging on strategies to achieve adaptivity in a distributed architecture

In this paper we present our approach to design adaptive systems. Attention is focused on the design of strategies which are considered an efficient way to implement decisions and to ensure the modularity, maintenance, reusability and evolvability of the main concepts and components of an adaptive distributed system. The paper presents three types of strategies: domain, system and connectivity. The last two types of strategies are independent of any application domain; hence, they are presented in the context of our architectural model. The domain strategies are described through a finance case study which provides support to the staff members to enhance the way they interact with the customers.

A Java mobile-enabled environment to access adaptive services

Today information systems provide services which may be accessed through various types of devices and/or networks and from different locations. Services should be adapted at runtime to the features of the requiring device. Moreover, users may specify additional information when claiming for services, information through which they indicate the quality level required and expected from the provided services. For example, users may request the printing of an image by specifying also the expected resolution, format and/or number of colors. In this context, we propose a mobile-enabled approach to design and implement adaptable services. Our solution defines three different service layers: (1) a low-level network communication layer providing connectivity services among the peers available in a system, (2) a middleware managing the system-specific services and defining a communication protocol for the services requests, and (3) a high-level application layer dealing with domain-specific services. In this paper, attention is focused on the middleware and network communication layers.