Antoine Aiello - Academia.edu (original) (raw)

Papers by Antoine Aiello

The University of Corsica decided to create in 2010 the platform STELLA MARE (Sustainable TEchnol... more The University of Corsica decided to create in 2010 the platform STELLA MARE (Sustainable TEchnologies for LittoraL Aquaculture and MArine Research) and its platform CNRS-Università di Corsica leads a project called AMB.I.EN.T.E (AMBient Intelligence for Environment using Technical Efficiency) to develop some tools to follow the terrestrial and underwater activities of animal. Global Positioning System (GPS) is considered as an essential key in the monitoring of animal activity. Indeed, the knowledge of the movement, the reproduction and spawning areas are important for the researchers. We were able to study some research on GPS tracking system however the energy consumption, a quick deployment and real-time data visualization are not clearly expressed in a same technical solution. In this paper, we introduce a prototype of GPS tracker system using LoRa (for Long Range) technology according to these three previous needs.

Simulation Tools and Techniques

We present the aggregated abstract simulators for the Dynamic Structure Discrete Time System Spec... more We present the aggregated abstract simulators for the Dynamic Structure Discrete Time System Specification (DSDTSS) formalism. These simulators allow to simulate large scale cell spaces undergoing structural changes efficiently. A generic algorithm for the optimisation of large scale transport processes simulation is provided. This algorithm consists in dynamically controlling the calculation domain (the set of cells whose state is computed at a given time step) during the simulation. Finally, a fire spreading application using the DSDTSS formalism is provided to pinpoint the advantages of using the DSDTSS formalism for modelling and simulating large dynamic structure cell spaces.

L Objet Logiciel Base De Donnees Reseaux, 1997

The fire-spreading phenomenon is highly complex, and existing mathematical models of fire are so ... more The fire-spreading phenomenon is highly complex, and existing mathematical models of fire are so complex themselves that any possibility of analytical solution is precluded. Instead, there has been some success when studying fire spread by means of simulation. However, precise and reliable mathematical models are still under development.They require extensive computing resources, being adequate to run in batch mode but making it difficult to meet real-time deadlines. As fire scientists need to learn about the problem domain through experimentation, simulation software needs to be easily modified. The authors used different discrete event modeling techniques to deal with these problems. They have qualitatively compared the Discrete Event System Specification (DEVS) and Cell-DEVS simulation results against controlled laboratory experiments, which allowed them to validate both simulation models of fire spread. They were able to show how these techniques can improve the definition of fire models.

We present an approach allowing the simulation of fire spread on parallel computers. The speedup ... more We present an approach allowing the simulation of fire spread on parallel computers. The speedup obtained shows that the technique used is efficient. Our algorithm is based on the DEVS formalism for Discrete EVent Simulation. Two levels of abstraction are considered: a low and a high level. The low level takes into account particular conditions (vegetation, slope, wind, etc.) through cellular independent components which have their own states and behavior. The high level of abstraction considers an area of land with a fire front as a whole unit that evolves in time and space. Our design consists in proposing a multicomponent model. A set of active elements is defined and added to the multicomponent in order to improve the parallelism and to limit computations. We develop a two levels parallel approach. The first level, relying on fork() function calls, allows portable placement parallelism on real processors. The second level based on the parallelization of the active elements is adapted for hyperthreading processors, which authorize independent threads running at the same time. We use here POSIX thread library. The full advantage of all available CPUs and a significant speedup on shared memory multiprocessor machines are obtained. Experiments and results are commented on, in the last section.

International Journal of Phytocosmetics and Natural Ingredients, 2015

Marine macroalgae are important ecological and commercial biomass resources to many regions of th... more Marine macroalgae are important ecological and commercial biomass resources to many regions of the world. They are valuable food resources and are most promising sources of bioactive compounds for the cosmetic industries. Phytochemical off-line investigation by the separation and identification of secondary metabolites are time, material and human resource consuming. Thus, in our studies, a rapid gas chromatography-mass spectrometry (GC-MS) on-line analysis with pretreatment (chemical derivatisations) was adapted for chemical profiling of two wild growing algae: Gracilaria dura and Hypnea musciformis from Corsica (France). Two GC-MS derivatisation methods were used: transmethylation for the fatty acids (FAs), and trimethylsilylation for compounds which bear-OH/-NH function. The application of the method on Gracilaria dura, and Hypnea musciformis leads to an identification of FAs, phytosterols, esters, simple phenolic compounds, and sugars from n-pentane, ethyl acetate (EtOAc) and n-butanol (n-BuOH) extracts. This method is quick and low-cost for chemical profiling of marine biomass. It could be applied not only by the fundamental but also cosmetic industrial research. In addition, this study showed that all algae extracts had modest DPPH (2,2-diphenyl-1-picrylhydrazyl) scavenging activities and the n-BuOH extract of Hypnea musciformis had a high total phenol content.

Environmental Modelling and Software, 2000

Animportant class of ecological problems concerns propagation processes. In ecological modelling,... more Animportant class of ecological problems concerns propagation processes. In ecological modelling, these phenomena,generally occur on large scales and are generally difficult to efficiently simulate be- cause of the number,of entities and connections between entities. Studies of this kind of phenomena lack genericity and reusability because they are often presented through the point of view of a single domain expert.

International Journal of Phytocosmetics and Natural Ingredients, 2015

Introduction Mediterranean Sea is recognized to be a global biodiversity hotspot. Its surface rep... more Introduction Mediterranean Sea is recognized to be a global biodiversity hotspot. Its surface represents only a small percentage (0.8%) of World Ocean surface; but the biodiversity is paradoxically rather high. More than 25% of Mediterranean marine plants are endemic (26.6%). 1 The Chaetomorpha genus belongs to the Chlorophyta division. Chaetomorpha means stiff hairs. Around 76 species are known from the Chaetomorpha genus. Fatty acids composition has been reported from C. linum from California (USA), 2 from C. minima from Japan 3 and steroids from C. basiretorsa from China. 4 However, the linum (Miller) Kütz. species, a green alga growing wild in the Mediterranean sea and pond has never been subjected to a phytochemical investigation. In the course of our ongoing work on the potential valorisation of Mediterranean resources in the cosmetic industry, we investigate the chemical composition and biological activities of various macroalgae from the three divisions: Chlorophyta, Rhodophyta and Chromophyta (Dinophytes and Pheophytes). We report here on the chemical composition of C. linum apolar (pentane) and medium polar (ethyl acetate) extracts. Materials and Methods Material and Isolation Chaetomorpha linum (Miller) Kütz. was collected at 20 cm deep in Urbino pond in the East coast of Corsica (France), on September 2013 and has been authenticated by Pr. Vanina Pasqualini (Université de Corse). Alga were dried and then extracted with solvent extracts of increasing polarities (pentane and ethyl acetate) using a Soxhlet apparatus during 4 hours. Solvent was evaporated under reduced pressure to yield a dark yellow (pentane extract) and dark green (ethyl acetate) extract with a low yield (respectively 0.37 and 0.50%). Each extract were chromatographed using a Grace Reveleris ® flash chromatography system using a gradient pentane/chloroform/chloroform/ethyl acetate and finally ethyl acetate-methanol. Thirty fractions were collected from the pentane extract and 41 from the ethyl acetate extract. Saponification Ethyl Acetate extract (90 mg) was heated to 85°C in a 25 ml round-bottomed flask for 2 hours after adding NaOH (5 ml) water solutions. After the reaction, the mixture was

Embedded System Applications, 1997

INFORMATICS IN CONTROL, AUTOMATION AND ROBOTICS I, 2006

Studying complex propagation phenomena is usually performed through cellular simulation models. U... more Studying complex propagation phenomena is usually performed through cellular simulation models. Usually cellular models are specific cellular automata developed by non-computer specialists. We attempt to present here a mathematical specification of a new kind of CA. The latter allows to soundly specify cellular models using a discrete time base, avoiding basic CA limitations (infinite lattice, neighborhood and rules uniformity of the cells, closure of the system to external events, static structure, etc.). Object-oriented techniques and discrete event simulation are used to achieve this goal. The approach is validated through a fire spreading application.

2005 IEEE International Conference on Systems, Man and Cybernetics, 2005

Complex spatially-extended systems consist of numerous sub-systems leading to large simulation ex... more Complex spatially-extended systems consist of numerous sub-systems leading to large simulation execution times. One approach to reducing these execution times is designing a simulation engine to allocate its attention to subsystems in proportion to their activity levels. In this paper, we consider a large scale simulation of a physics-based fire spread model. This model is discretized using a recently developed

International Journal of Systems Science, 2008

... View all references, Vasconcelos et al. 199516. Vasconcelos, MJ, Pereira, JMC and Zeigler, BP... more ... View all references, Vasconcelos et al. 199516. Vasconcelos, MJ, Pereira, JMC and Zeigler, BP. 1995. ... To modify the physical fire-spread model to include wind and slope (Marcelli et al. 19998. Marcelli, T, Aïello, A, Santoni, PA and Balbi, JH. 1999. ...

Environmental Modelling & Software, 2005

... MDA provides both an environment to define platform-independent models (PIM) and generation s... more ... MDA provides both an environment to define platform-independent models (PIM) and generation services to map these models to a particular platform ... 1996] and [Lopes et al., 2002] ) and simulations of fire spreading on large-scale ( [Wu et al., 1996] , [Albright and Meisner, 1999 ...

The University of Corsica decided to create in 2010 the platform STELLA MARE (Sustainable TEchnol... more The University of Corsica decided to create in 2010 the platform STELLA MARE (Sustainable TEchnologies for LittoraL Aquaculture and MArine Research) and its platform CNRS-Università di Corsica leads a project called AMB.I.EN.T.E (AMBient Intelligence for Environment using Technical Efficiency) to develop some tools to follow the terrestrial and underwater activities of animal. Global Positioning System (GPS) is considered as an essential key in the monitoring of animal activity. Indeed, the knowledge of the movement, the reproduction and spawning areas are important for the researchers. We were able to study some research on GPS tracking system however the energy consumption, a quick deployment and real-time data visualization are not clearly expressed in a same technical solution. In this paper, we introduce a prototype of GPS tracker system using LoRa (for Long Range) technology according to these three previous needs.

Simulation Tools and Techniques

We present the aggregated abstract simulators for the Dynamic Structure Discrete Time System Spec... more We present the aggregated abstract simulators for the Dynamic Structure Discrete Time System Specification (DSDTSS) formalism. These simulators allow to simulate large scale cell spaces undergoing structural changes efficiently. A generic algorithm for the optimisation of large scale transport processes simulation is provided. This algorithm consists in dynamically controlling the calculation domain (the set of cells whose state is computed at a given time step) during the simulation. Finally, a fire spreading application using the DSDTSS formalism is provided to pinpoint the advantages of using the DSDTSS formalism for modelling and simulating large dynamic structure cell spaces.

L Objet Logiciel Base De Donnees Reseaux, 1997

The fire-spreading phenomenon is highly complex, and existing mathematical models of fire are so ... more The fire-spreading phenomenon is highly complex, and existing mathematical models of fire are so complex themselves that any possibility of analytical solution is precluded. Instead, there has been some success when studying fire spread by means of simulation. However, precise and reliable mathematical models are still under development.They require extensive computing resources, being adequate to run in batch mode but making it difficult to meet real-time deadlines. As fire scientists need to learn about the problem domain through experimentation, simulation software needs to be easily modified. The authors used different discrete event modeling techniques to deal with these problems. They have qualitatively compared the Discrete Event System Specification (DEVS) and Cell-DEVS simulation results against controlled laboratory experiments, which allowed them to validate both simulation models of fire spread. They were able to show how these techniques can improve the definition of fire models.

We present an approach allowing the simulation of fire spread on parallel computers. The speedup ... more We present an approach allowing the simulation of fire spread on parallel computers. The speedup obtained shows that the technique used is efficient. Our algorithm is based on the DEVS formalism for Discrete EVent Simulation. Two levels of abstraction are considered: a low and a high level. The low level takes into account particular conditions (vegetation, slope, wind, etc.) through cellular independent components which have their own states and behavior. The high level of abstraction considers an area of land with a fire front as a whole unit that evolves in time and space. Our design consists in proposing a multicomponent model. A set of active elements is defined and added to the multicomponent in order to improve the parallelism and to limit computations. We develop a two levels parallel approach. The first level, relying on fork() function calls, allows portable placement parallelism on real processors. The second level based on the parallelization of the active elements is adapted for hyperthreading processors, which authorize independent threads running at the same time. We use here POSIX thread library. The full advantage of all available CPUs and a significant speedup on shared memory multiprocessor machines are obtained. Experiments and results are commented on, in the last section.

International Journal of Phytocosmetics and Natural Ingredients, 2015

Marine macroalgae are important ecological and commercial biomass resources to many regions of th... more Marine macroalgae are important ecological and commercial biomass resources to many regions of the world. They are valuable food resources and are most promising sources of bioactive compounds for the cosmetic industries. Phytochemical off-line investigation by the separation and identification of secondary metabolites are time, material and human resource consuming. Thus, in our studies, a rapid gas chromatography-mass spectrometry (GC-MS) on-line analysis with pretreatment (chemical derivatisations) was adapted for chemical profiling of two wild growing algae: Gracilaria dura and Hypnea musciformis from Corsica (France). Two GC-MS derivatisation methods were used: transmethylation for the fatty acids (FAs), and trimethylsilylation for compounds which bear-OH/-NH function. The application of the method on Gracilaria dura, and Hypnea musciformis leads to an identification of FAs, phytosterols, esters, simple phenolic compounds, and sugars from n-pentane, ethyl acetate (EtOAc) and n-butanol (n-BuOH) extracts. This method is quick and low-cost for chemical profiling of marine biomass. It could be applied not only by the fundamental but also cosmetic industrial research. In addition, this study showed that all algae extracts had modest DPPH (2,2-diphenyl-1-picrylhydrazyl) scavenging activities and the n-BuOH extract of Hypnea musciformis had a high total phenol content.

Environmental Modelling and Software, 2000

Animportant class of ecological problems concerns propagation processes. In ecological modelling,... more Animportant class of ecological problems concerns propagation processes. In ecological modelling, these phenomena,generally occur on large scales and are generally difficult to efficiently simulate be- cause of the number,of entities and connections between entities. Studies of this kind of phenomena lack genericity and reusability because they are often presented through the point of view of a single domain expert.

International Journal of Phytocosmetics and Natural Ingredients, 2015

Introduction Mediterranean Sea is recognized to be a global biodiversity hotspot. Its surface rep... more Introduction Mediterranean Sea is recognized to be a global biodiversity hotspot. Its surface represents only a small percentage (0.8%) of World Ocean surface; but the biodiversity is paradoxically rather high. More than 25% of Mediterranean marine plants are endemic (26.6%). 1 The Chaetomorpha genus belongs to the Chlorophyta division. Chaetomorpha means stiff hairs. Around 76 species are known from the Chaetomorpha genus. Fatty acids composition has been reported from C. linum from California (USA), 2 from C. minima from Japan 3 and steroids from C. basiretorsa from China. 4 However, the linum (Miller) Kütz. species, a green alga growing wild in the Mediterranean sea and pond has never been subjected to a phytochemical investigation. In the course of our ongoing work on the potential valorisation of Mediterranean resources in the cosmetic industry, we investigate the chemical composition and biological activities of various macroalgae from the three divisions: Chlorophyta, Rhodophyta and Chromophyta (Dinophytes and Pheophytes). We report here on the chemical composition of C. linum apolar (pentane) and medium polar (ethyl acetate) extracts. Materials and Methods Material and Isolation Chaetomorpha linum (Miller) Kütz. was collected at 20 cm deep in Urbino pond in the East coast of Corsica (France), on September 2013 and has been authenticated by Pr. Vanina Pasqualini (Université de Corse). Alga were dried and then extracted with solvent extracts of increasing polarities (pentane and ethyl acetate) using a Soxhlet apparatus during 4 hours. Solvent was evaporated under reduced pressure to yield a dark yellow (pentane extract) and dark green (ethyl acetate) extract with a low yield (respectively 0.37 and 0.50%). Each extract were chromatographed using a Grace Reveleris ® flash chromatography system using a gradient pentane/chloroform/chloroform/ethyl acetate and finally ethyl acetate-methanol. Thirty fractions were collected from the pentane extract and 41 from the ethyl acetate extract. Saponification Ethyl Acetate extract (90 mg) was heated to 85°C in a 25 ml round-bottomed flask for 2 hours after adding NaOH (5 ml) water solutions. After the reaction, the mixture was

Embedded System Applications, 1997

INFORMATICS IN CONTROL, AUTOMATION AND ROBOTICS I, 2006

Studying complex propagation phenomena is usually performed through cellular simulation models. U... more Studying complex propagation phenomena is usually performed through cellular simulation models. Usually cellular models are specific cellular automata developed by non-computer specialists. We attempt to present here a mathematical specification of a new kind of CA. The latter allows to soundly specify cellular models using a discrete time base, avoiding basic CA limitations (infinite lattice, neighborhood and rules uniformity of the cells, closure of the system to external events, static structure, etc.). Object-oriented techniques and discrete event simulation are used to achieve this goal. The approach is validated through a fire spreading application.

2005 IEEE International Conference on Systems, Man and Cybernetics, 2005

Complex spatially-extended systems consist of numerous sub-systems leading to large simulation ex... more Complex spatially-extended systems consist of numerous sub-systems leading to large simulation execution times. One approach to reducing these execution times is designing a simulation engine to allocate its attention to subsystems in proportion to their activity levels. In this paper, we consider a large scale simulation of a physics-based fire spread model. This model is discretized using a recently developed

International Journal of Systems Science, 2008

... View all references, Vasconcelos et al. 199516. Vasconcelos, MJ, Pereira, JMC and Zeigler, BP... more ... View all references, Vasconcelos et al. 199516. Vasconcelos, MJ, Pereira, JMC and Zeigler, BP. 1995. ... To modify the physical fire-spread model to include wind and slope (Marcelli et al. 19998. Marcelli, T, Aïello, A, Santoni, PA and Balbi, JH. 1999. ...

Environmental Modelling & Software, 2005

... MDA provides both an environment to define platform-independent models (PIM) and generation s... more ... MDA provides both an environment to define platform-independent models (PIM) and generation services to map these models to a particular platform ... 1996] and [Lopes et al., 2002] ) and simulations of fire spreading on large-scale ( [Wu et al., 1996] , [Albright and Meisner, 1999 ...