As information environments grow in complexity, we yearn for simple interfaces that streamline hu... more As information environments grow in complexity, we yearn for simple interfaces that streamline human cognition and effort. Users need to perform complex operations on thousands of objects. Human attention and available screen real estate are constrained. We develop a new fluid interface component for the visualization and adjustment of values while authoring, the In-Context Slider, which reduces physical effort and demand on attention by using fluid mouse gestures and in-context interaction. We hypothesize that such an interface will make adjusting values easier for the user. We evaluated the In-Context Slider as an affordance for adjusting values of interest in text and images, compared with a more typical interface. Participants performed faster with the In-Context Slider. They found the new interface easier to use and more natural for expressing interest. We then integrated the In-Context Slider in the information composition platform, combinFormation. Participants experienced the In-Context Slider as easier to use while developing collections to answer openended information discovery questions. This research is relevant for many applications in which users provide ratings, such as recommender systems, as well as for others in which users' adjustment of values on concurrently displayed objects is integrated with extensive interactive functionality.
Abstract. This paper presents an approach for creating, delivering and managing context-aware net... more Abstract. This paper presents an approach for creating, delivering and managing context-aware network services using programmable networks' facilities. The solution provided is conceived as a ContextWare middleware between service customers, service providers ...
... Policy-based Network Management for Active Networks. GALIS, A and Tan, A and Serrat, J and Ni... more ... Policy-based Network Management for Active Networks. GALIS, A and Tan, A and Serrat, J and Nikolakis, Y and Vivero, J and Denasis, S and Manas, JL and Laarhui, JH Policy-based Network Management for Active Networks. In: (Proceedings) IEEE ICT 2001. ...
AbstractNetwork Management Systems of Ambient Networks must work in an environment where heterog... more AbstractNetwork Management Systems of Ambient Networks must work in an environment where heterogeneous networks cooperates and composes, on demand and transparently, without the need for manual (pre)-configuration or offline negotiations between network ...
The Internet is a remarkable catalyst for creativity, collaboration and innovation providing us w... more The Internet is a remarkable catalyst for creativity, collaboration and innovation providing us with amazing possibilities that just two decades ago would have been impossible to imagine. This work includes a peer-reviewed collection of scientific papers addressing some of the challenges that shape the Internet of the future.
This paper reviews the characteristics and methodologies developed by the programmable network an... more This paper reviews the characteristics and methodologies developed by the programmable network and active network communities as complementary approaches making a significant contribution to the development of new architectures. It reviews the characteristics and methods developed for policy-based network management, specifically in the context of active networks. A network management overview of existing work in active and programmable networks is given. One such architecture is developed in the IST Project FAIN [A.3], [A.20]. FAIN is a three-year project, whose main task is to develop and validate an open, flexible, programmable and dependable network architecture based on novel active node concepts. The FAIN policy based network management is described.
Towards the Future Internet: A European Research Perspective, 2009
The image on the cover is a partial map of the Internet based on the OPTE project started by Barr... more The image on the cover is a partial map of the Internet based on the OPTE project started by Barrett Lyon (www.blyon.com) who kindly let us use it for the front cover of this book. In this graph the lines connect nodes representing IP addresses of some indicative Class C networks color-coded according to their corresponding allocation. For more information see
The Future Internet as a design conception is network and service-aware addressing social and eco... more The Future Internet as a design conception is network and service-aware addressing social and economic trends in a service oriented way. In the Future Internet, applications transcend disciplinary and technology boundaries following interoperable reference model (s). In ...
This chapter presents the need, the requirements, and a design for a monitoring system that is su... more This chapter presents the need, the requirements, and a design for a monitoring system that is suitable for supporting the operations and management of a Federated Cloud environment. We discuss these issues within the context of the RESERVOIR Service Cloud computing project. We first present the RESERVOIR architecture itself, then we introduce the issues of service monitoring in a federated environment, together with the specific solutions that have been devised for RESERVOIR. We end with a review of our experience in this ...
Towards the Future Internet-Emerging Trends from European Research, 2010
Abstract. Service Clouds are a key emerging feature of the Future Internet which will provide a p... more Abstract. Service Clouds are a key emerging feature of the Future Internet which will provide a platform to execute virtualized services. To effectively operate a service cloud there needs to be a monitoring system which provides data on the actual usage and changes in resources of the cloud and of the services running in the cloud. We present the main aspects of Lattice, a new monitoring framework, which has been specially designed for monitoring resources and services in virtualized environments. Finally, we discuss the issues related ...
Serrat, J and Grampín, E and Raptis, L and Karayannis, F and Vaxevanakis, K and Chronis, D and Ka... more Serrat, J and Grampín, E and Raptis, L and Karayannis, F and Vaxevanakis, K and Chronis, D and Katopodis, H and Hoekstra, G and Romijn, WA and Galis, A and Kozlovski, E (2003) Functional Evaluation of an Integrated IP over WDM. In: Goldszmidt, GS and Schönwälder, ...
... Mobile agents can migrate autonomously between different locations whilst stationary agents r... more ... Mobile agents can migrate autonomously between different locations whilst stationary agents reside permanently in their creation agency, offering services to other agents and possibly encapsulating non-agent ... IETF Policy Core Information Model Extensions on web ...
IFIP — The International Federation for Information Processing, 2007
... In traditional network design, services are considered as the one part of the network layer. ... more ... In traditional network design, services are considered as the one part of the network layer. In [6], Gbaguidi et al referred this type of service deployment design as the network-centric based solution. ... Similarly, only the X.25 or Frame Relay networks support data services. ...
When different wireless networks come in close proximity there is often a need for them to logica... more When different wireless networks come in close proximity there is often a need for them to logically combine, or compose. We focus on a known research problem particularly in Ambient Networks (ANs), where heterogeneous Distributed Hash Tables (DHTs) contained in these wireless networks need to merge or divide as a result of these dynamic (de)composition processes, respectively. We present two novel DHT (de)composition models for ANs, known as absorption and gatewaying, that are designed to handle (de)composition of DHTs in different AN network environments, with minimal disturbance to existing member nodes.
International Conference on Autonomic and Autonomous Systems (ICAS'06), 2006
An essential functionality for context-aware networks would be the ability to classify traffic in... more An essential functionality for context-aware networks would be the ability to classify traffic into logical flows and to determine the characteristics of these flows, for various purposes such as QoS provisioning, traffic limiting and shaping, security filtering and access control, policy-based routing, adaptation, service triggering, and long-term network monitoring and management. In this paper we explore a multi-dimensional scheme of classifying flows based on both their intrinsic characteristics and on some relevant external factors, that is, we classify flows based on their context. We demonstrate the use of ontologies to formally model flow context for software design purposes and as a vocabulary for runtime context exchange and processing, and describe the implementation of a system that demonstrates contextbased flow classification.
As information environments grow in complexity, we yearn for simple interfaces that streamline hu... more As information environments grow in complexity, we yearn for simple interfaces that streamline human cognition and effort. Users need to perform complex operations on thousands of objects. Human attention and available screen real estate are constrained. We develop a new fluid interface component for the visualization and adjustment of values while authoring, the In-Context Slider, which reduces physical effort and demand on attention by using fluid mouse gestures and in-context interaction. We hypothesize that such an interface will make adjusting values easier for the user. We evaluated the In-Context Slider as an affordance for adjusting values of interest in text and images, compared with a more typical interface. Participants performed faster with the In-Context Slider. They found the new interface easier to use and more natural for expressing interest. We then integrated the In-Context Slider in the information composition platform, combinFormation. Participants experienced the In-Context Slider as easier to use while developing collections to answer openended information discovery questions. This research is relevant for many applications in which users provide ratings, such as recommender systems, as well as for others in which users' adjustment of values on concurrently displayed objects is integrated with extensive interactive functionality.
Abstract. This paper presents an approach for creating, delivering and managing context-aware net... more Abstract. This paper presents an approach for creating, delivering and managing context-aware network services using programmable networks' facilities. The solution provided is conceived as a ContextWare middleware between service customers, service providers ...
... Policy-based Network Management for Active Networks. GALIS, A and Tan, A and Serrat, J and Ni... more ... Policy-based Network Management for Active Networks. GALIS, A and Tan, A and Serrat, J and Nikolakis, Y and Vivero, J and Denasis, S and Manas, JL and Laarhui, JH Policy-based Network Management for Active Networks. In: (Proceedings) IEEE ICT 2001. ...
AbstractNetwork Management Systems of Ambient Networks must work in an environment where heterog... more AbstractNetwork Management Systems of Ambient Networks must work in an environment where heterogeneous networks cooperates and composes, on demand and transparently, without the need for manual (pre)-configuration or offline negotiations between network ...
The Internet is a remarkable catalyst for creativity, collaboration and innovation providing us w... more The Internet is a remarkable catalyst for creativity, collaboration and innovation providing us with amazing possibilities that just two decades ago would have been impossible to imagine. This work includes a peer-reviewed collection of scientific papers addressing some of the challenges that shape the Internet of the future.
This paper reviews the characteristics and methodologies developed by the programmable network an... more This paper reviews the characteristics and methodologies developed by the programmable network and active network communities as complementary approaches making a significant contribution to the development of new architectures. It reviews the characteristics and methods developed for policy-based network management, specifically in the context of active networks. A network management overview of existing work in active and programmable networks is given. One such architecture is developed in the IST Project FAIN [A.3], [A.20]. FAIN is a three-year project, whose main task is to develop and validate an open, flexible, programmable and dependable network architecture based on novel active node concepts. The FAIN policy based network management is described.
Towards the Future Internet: A European Research Perspective, 2009
The image on the cover is a partial map of the Internet based on the OPTE project started by Barr... more The image on the cover is a partial map of the Internet based on the OPTE project started by Barrett Lyon (www.blyon.com) who kindly let us use it for the front cover of this book. In this graph the lines connect nodes representing IP addresses of some indicative Class C networks color-coded according to their corresponding allocation. For more information see
The Future Internet as a design conception is network and service-aware addressing social and eco... more The Future Internet as a design conception is network and service-aware addressing social and economic trends in a service oriented way. In the Future Internet, applications transcend disciplinary and technology boundaries following interoperable reference model (s). In ...
This chapter presents the need, the requirements, and a design for a monitoring system that is su... more This chapter presents the need, the requirements, and a design for a monitoring system that is suitable for supporting the operations and management of a Federated Cloud environment. We discuss these issues within the context of the RESERVOIR Service Cloud computing project. We first present the RESERVOIR architecture itself, then we introduce the issues of service monitoring in a federated environment, together with the specific solutions that have been devised for RESERVOIR. We end with a review of our experience in this ...
Towards the Future Internet-Emerging Trends from European Research, 2010
Abstract. Service Clouds are a key emerging feature of the Future Internet which will provide a p... more Abstract. Service Clouds are a key emerging feature of the Future Internet which will provide a platform to execute virtualized services. To effectively operate a service cloud there needs to be a monitoring system which provides data on the actual usage and changes in resources of the cloud and of the services running in the cloud. We present the main aspects of Lattice, a new monitoring framework, which has been specially designed for monitoring resources and services in virtualized environments. Finally, we discuss the issues related ...
Serrat, J and Grampín, E and Raptis, L and Karayannis, F and Vaxevanakis, K and Chronis, D and Ka... more Serrat, J and Grampín, E and Raptis, L and Karayannis, F and Vaxevanakis, K and Chronis, D and Katopodis, H and Hoekstra, G and Romijn, WA and Galis, A and Kozlovski, E (2003) Functional Evaluation of an Integrated IP over WDM. In: Goldszmidt, GS and Schönwälder, ...
... Mobile agents can migrate autonomously between different locations whilst stationary agents r... more ... Mobile agents can migrate autonomously between different locations whilst stationary agents reside permanently in their creation agency, offering services to other agents and possibly encapsulating non-agent ... IETF Policy Core Information Model Extensions on web ...
IFIP — The International Federation for Information Processing, 2007
... In traditional network design, services are considered as the one part of the network layer. ... more ... In traditional network design, services are considered as the one part of the network layer. In [6], Gbaguidi et al referred this type of service deployment design as the network-centric based solution. ... Similarly, only the X.25 or Frame Relay networks support data services. ...
When different wireless networks come in close proximity there is often a need for them to logica... more When different wireless networks come in close proximity there is often a need for them to logically combine, or compose. We focus on a known research problem particularly in Ambient Networks (ANs), where heterogeneous Distributed Hash Tables (DHTs) contained in these wireless networks need to merge or divide as a result of these dynamic (de)composition processes, respectively. We present two novel DHT (de)composition models for ANs, known as absorption and gatewaying, that are designed to handle (de)composition of DHTs in different AN network environments, with minimal disturbance to existing member nodes.
International Conference on Autonomic and Autonomous Systems (ICAS'06), 2006
An essential functionality for context-aware networks would be the ability to classify traffic in... more An essential functionality for context-aware networks would be the ability to classify traffic into logical flows and to determine the characteristics of these flows, for various purposes such as QoS provisioning, traffic limiting and shaping, security filtering and access control, policy-based routing, adaptation, service triggering, and long-term network monitoring and management. In this paper we explore a multi-dimensional scheme of classifying flows based on both their intrinsic characteristics and on some relevant external factors, that is, we classify flows based on their context. We demonstrate the use of ontologies to formally model flow context for software design purposes and as a vocabulary for runtime context exchange and processing, and describe the implementation of a system that demonstrates contextbased flow classification.
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Papers by A. Galis