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Effective fault-management in emerging complex distributed applications requires the ability to dynamically adapt resource allocation and fault tolerance policies in response to possible changes in environment, application requirements,... more
Simulation, which creates abstractions of the system is an appropriate approach for studying complex systems that are inaccessible through direct observation and measurement. The problem with simulation of great numbers of interacting... more
Holonic Multi-Agent Systems (HMAS) are a convenient and relevant way to analyze, model and simulate complex and open systems. Accurately simulate in real-time complex systems, where a great number of entities interact, requires extensive... more
Cloud Computing has widely been adopted by the industry or organization though there are many existing issues like Load Balancing, Virtual Machine Consolidation, Energy Management, etc. which have not been fully implemented. Central to... more
Modern societies are pervaded by computerized, heterogeneous devices designed for specific purposes, but also more and more often capable of interacting with other devices for entirely different purposes. For example, a cell phone could... more
The unpredictability of business processes requires that business applications support exception management with the ability to dynamically adapt to the changing environment. Exception management is a kind of complex process, in which... more
Agriculture represents the main source of livelihood for small scale farmers, and a significant fraction of the gross domestic product in the case of intensive commercial agriculture. Because crop performance at the end of a growing... more
In this paper, we focus on advanced classification and data retrieval schemes that are instrumental when processing large taxonomical image datasets. With large number of classes, classification and an efficient retrieval of a particular... more
Reservation based (RB) scheduling is a class of scheduling algorithms that is well-suited for a large class of soft real-time applications. They are based on a "bandwidth" abstraction, meaning that a task is given the illusion of... more
LEAD is a large-scale effort to build a service-oriented infrastructure that allows atmospheric science researchers to dynamically and adaptively respond to weather patterns to produce better-than-real time predictions of tornadoes and... more
ach year across the US, mesoscale weather events-flash floods, tornadoes, hail, strong winds, lightning, and localized winter storms-cause hundreds of deaths, routinely disrupt transportation and commerce, and lead to economic losses... more
LEAD establish an interactive closed loop between the forecast analysis and the instruments: The data drives the instruments, which, to make more accurate predictions, refocus in a repeated cycle. The "Hypothetical CASA-LEAD Scenario"... more
Each year across the United States, floods, tornadoes, hail, strong winds, lightning, and winter storms -so-called mesoscale weather events -cause hundreds of deaths, routinely disrupt transportation and commerce and result in annual... more
The design of adaptive e-learning systems has been approached from different points of view. Adaptive Educational Hypermedia (AEH) conceptual frameworks, usually decompose this problem into separate concerns: a User Model (UM), an... more
The internet of things is predicated on tiny, cheap, lower power computers being embedded in devices everywhere. However such tiny devices by definition have very little memory and computing power available to support user interfaces or... more
Cloud computing is an emerging market place in which computing resources are treated as the utilities and priced for their usage. A huge competition prevails among the cloud Service Providers (SPs) to offer eco-friendly and economically... more
Picoeukaryotes are a taxonomically diverse group of organisms less than 2 micrometers in diameter. Photosynthetic marine picoeukaryotes in the genus Micromonas thrive in ecosystems ranging from tropical to polar and could serve as... more
We describe recently developed Nuclear Magnetic Resonance (NMR) based methods for measuring the concentration of two-or three-component systems as a function of height and time. Results from sedimenting and floating systems with a single... more
This paper discusses a multilayered model for strategies for real-time expressive control of sound and visual output. A particular focus is on multimodal interactive systems for performing arts as user-centred systems able to interpret... more
A new virtual memory management algorithm WSCLOCK has been synthesized from the local working set (WS) algorithm, the global CLOCK algorithm, and a new load control mechanism for auxiliary memory access. The new algorithm combines the... more
This paper presents the design and system architecture of the Ad hoc Context Aware Network (ACAN), a wireless environment with no pre-configuration and with spontaneous applications running according to the contextual situation. The ACAN... more
This paper proposes an Adaptive CORBA Template (ACT), which enables run-time improvements to CORBA applications in response to unanticipated changes in either their functional requirements or their execution environments. ACT enhances... more
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This paper addresses the design of adaptive middleware to support autonomic computing in pervasive computing environments. The particular problem we address here is how to support self-optimization to changing network connection... more
Increasingly, software systems are constructed by composing multiple existing applications. The resulting complexity increases the need for self-management of the system. However, adding autonomic behavior to composite systems is... more
The need for adaptability in software is growing, driven in part by the emergence of pervasive and autonomic computing. In many cases, it is desirable to enhance existing programs with adaptive behavior, enabling them to execute... more
Recomposable software enables a system to change its structure and behavior during execution, in response to a dynamic execution environment. This paper proposes an approach to ensure that such adaptations are safe with respect to system... more
This paper describes TRAP/C++, a software tool that enables new adaptable behavior to be added to existing C++ programs in a transparent fashion. In previous investigations, we used an aspect-oriented approach to manually define aspects... more
A distributed system is modeled as a set of communicating components running on one or more processes. -Adaptive actions: insert, remove, or replace SW elements • Atomic communication: -An interaction, either within a component or between... more
While context-oriented programming technology so far has focused mostly on behavioral adaptation, context-oriented data management has received much less attention. In this paper we make a case for the problem of context-oriented data... more
Unlike static networks, ad-hoc networks have no spatial hierarchy and su er from frequent link failures which prevent mobile hosts from using traditional routing schemes. Under these conditions, mobile hosts must nd routes to destinations... more
We have developed a tool for the authoring of adaptive CAL courses, called "Dynamic Courseware Generator" (DCG). It generates an individual course according to the learner's goals and previous knowledge and dynamically adapts the course... more
Algorithms are presented for fully automatic three-dimensional (3-D) tracing of neurons that are imaged by fluorescence confocal microscopy. Unlike previous voxel-based skeletonization methods, the present approach works by recursively... more
The aim of this work is to evaluate several 3D-VAR assimilation cycles in the limited area model ALADIN, in comparison with the dynamical adaptation of the global model (ARPEGE) analysis, and with a focus on the precipitation forecasts.... more
This paper proposes a novel framework for automated software service composition that can significantly support and enhance collaboration among enterprises in service provision industry, such as in tourism insurance and e-commerce... more
Adherence of Helicobacter pylori to inflamed gastric mucosa is dependent on the sialic acid-binding adhesin (SabA) and cognate sialylated/fucosylated glycans on the host cell surface. By in situ hybridization, H. pylori bacteria were... more
HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or... more
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In this paper we present a novel method for gesture video decomposition based on the depicted content. From the initial content the key-frames are extracted and the neighboring frames are assigned to key-frames of similar content. The... more
Monitoring and adaptation of multilayer systems are challenging, because the mismatches and adaptations are interrelated across the layers. This interrelation introduces two important but difficult questions. 1) When a system change... more
We present the design, correctness, and analysis of SONDe, a simple fully decentralized object deployment algorithm for highly requested systems. Given an object (service or data), SONDe provides a node with a constant upper bound (h) on... more
This paper describes the ongoing development of a Multiagent Adjustable Autonomy Framework (MAAF) for multi-robot, multi-human teams performing tactical maneuvers. The challenge being addressed in this SBIR Phase I R&D project is how to... more
In this article we present a Multi-Objective Genetic Algorithm for Initialization (MOGAI) that finds a starting sensor configuration for Observability Analysis (OA), this study being a crucial stage in the design and revamp of... more
The recently developed Empirical Mode Decomposition (EMD) method is applied to analyzing gravity wave characteristics in the middle atmosphere. By establishing a close connection between the fundamental Intrinsic Mode Functions (IMFs)... more
New approaches in fuzzy modelling in order to solve practical limitations found in classic adaptive fuzzy modelling, are considered an interesting contribution in the fuzzy logic field. In this work, an approach for the development of... more
rocket campaign was conducted from Thumba (8.5"N), India, jointly by India and Russia, to study the vertical distribution of ozone during the International DYANA programme in 1990. Sixteen instrumented payloads were launched using M-100... more