Готові списки джерел за темами / Adaptative modeling

Добірка наукової літератури з теми "Adaptative modeling"

Автор: Grafiati

Опубліковано: 28 травня 2022

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Статті в журналах з теми "Adaptative modeling":

Labeas, G. N., S. D. Belesis, I. Diamantakos, and K. I. Tserpes. "Adaptative Progressive Damage Modeling for Large-scale Composite Structures." International Journal of Damage Mechanics 21, no. 3 (May 6, 2011): 441–62. http://dx.doi.org/10.1177/1056789511400928.

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Bonfoh, Napo, Edem Novinyo, and Paul Lipinski. "Modeling of bone adaptative behavior based on cells activities." Biomechanics and Modeling in Mechanobiology 10, no. 5 (December 7, 2010): 789–98. http://dx.doi.org/10.1007/s10237-010-0274-y.

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Bouzid, Chiraz, Naoufel Kraiem, and Camille Salinesi. "Using Product Lines Techniques to Specify Self-Adaptative Systems." INTERNATIONAL JOURNAL OF MANAGEMENT & INFORMATION TECHNOLOGY 5, no. 2 (August 30, 2013): 470–77. http://dx.doi.org/10.24297/ijmit.v5i2.762.

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Dynamic software adaptability is one of the central features leveraged by autonomic computing. However, developing software that changes its behavior at run time in response to dynamically varying user needs and resource constraints is a challenging task. With the emergence of mobile and service oriented computing, such variation is becoming increasingly common, and the need for adaptivity is increasing accordingly. Software product line engineering has proved itself as an efficient way to deal with varying user needs and resource constraints. In this paper we present an approach to specifying adaptive systems based on product line oriented technique such as variability modeling: we propose to combine goal modeling techniques to represent architectural and environmental variability, with constraint programming to provide the analyst with a means to identify the system variants best suited to the various environmental contexts that a system might encounter at runtime.

Gagliano, Antonio, Francesco Nocera, Maria Bruno, and Ignazio Blanco. "Effectiveness of thermodynamic adaptative equilibrium models for modeling the pyrolysis process." Sustainable Energy Technologies and Assessments 27 (June 2018): 74–82. http://dx.doi.org/10.1016/j.seta.2018.03.006.

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Liu, Meng, and Linqing Yang. "Northward expansion of fire-adaptative vegetation in future warming." Environmental Research Letters 17, no. 2 (January 26, 2022): 024008. http://dx.doi.org/10.1088/1748-9326/ac417d.

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Abstract Fire frequency and intensity are increasing due to higher temperatures and more droughts. The distributions of fuels (vegetation in natural conditions) are also changing in response to climate change. The vegetation in cold environments such as high latitudes and high altitudes is found to move upward or northward due to global warming. However, few studies have investigated the distribution changes of fire adaptive species in warm environments. This study estimated and compared the distributions of a typical fuelwood, the Eucalyptus globulus, under different climate scenarios. The species distribution modeling techniques were adopted to estimate the current distributions of the Eucalyptus globulus and the future distributions under scenarios of both SSP245 and SSP585 in 2060. Results show that the probability of the existence of the Eucalyptus globulus in the Northern Hemisphere increases significantly (p < 0.001) under both SSP245 and SSP585, especially in North America and Europe. However, the probability in the Southern Hemisphere decreases. The distribution of the Eucalyptus globulus expands in the mid-latitude (40 N–60 N) of the Northern Hemisphere. High carbon emissions contribute to the boost of the establishment of the Eucalyptus globulus in the Northern Hemisphere. These findings demonstrate that the fire adaptive species shows the tendency of shifting northward in response to climate change, highlighting the challenge of northward expansion of fires in future warming.

Louzada, Francisco, Taciana KO Shimizu, and Adriano K. Suzuki. "The Spike-and-Slab Lasso regression modeling with compositional covariates: An application on Brazilian children malnutrition data." Statistical Methods in Medical Research 29, no. 5 (July 23, 2019): 1434–46. http://dx.doi.org/10.1177/0962280219863817.

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There are considerable challenges in analyzing large-scale compositional data. In this paper, we introduce the Spike-and-Slab Lasso linear regression in the presence of compositional covariates for parameter estimation and variable selection. We consider the well-known isometric log-ratio (ilr) coordinates to avoid misleading statistical inference. The separable and non-separable (adaptative) Spike-and-Slab Lasso penalties are compared to verify the advantages of each approach. The proposed method is illustrated on simulated and on real Brazilian child malnutrition data.

Lorenzo-Aparicio, Andrés. "The Potential of Modeling Process for Social Sciences and Social Work." Ehquidad Revista Internacional de Políticas de Bienestar y Trabajo Social, no. 15 (January 10, 2021): 113–34. http://dx.doi.org/10.15257/ehquidad.2021.0005.

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Simplification and necessary reductionism in a model cannot lead to detailed descriptions of social phenomena with all their complexity, but we can obtain useful knowledge from their application both in specific and generic contexts. Human ecosystems, that perform as adaptative complex systems, have features which make it difficult to generate valid models. Amongst them, the emergency phenomena, that presents new characteristics that cannot be explained by the components of the system itself. But without this knowledge derived from modelling, we, as social workers, cannot suggest answers that ignore the structural causes of social problems. Faced with this challenge we propose Agent Based Modelling, as it allows us to study the social processes of human ecosystems and in turn demonstrates new challenges of knowledge and competences that social workers might have.

Ferreira, V. G., A. C. Brandi, F. A. Kurokawa, P. Seleghim Jr., A. Castelo та J. A. Cuminato. "Incompressible Turbulent Flow Simulation Using theκ-ɛModel and Upwind Schemes". Mathematical Problems in Engineering 2007 (2007): 1–26. http://dx.doi.org/10.1155/2007/12741.

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In the computation of turbulent flows via turbulence modeling, the treatment of the convective terms is a key issue. In the present work, we present a numerical technique for simulating two-dimensional incompressible turbulent flows. In particular, the performance of the high Reynoldsκ-ɛmodel and a new high-order upwind scheme (adaptative QUICKEST by Kaibara et al. (2005)) is assessed for 2D confined and free-surface incompressible turbulent flows. The model equations are solved with the fractional-step projection method in primitive variables. Solutions are obtained by using an adaptation of the front tracking GENSMAC (Tomé and McKee (1994)) methodology for calculating fluid flows at high Reynolds numbers. The calculations are performed by using the 2D version of theFreeflowsimulation system (Castello et al. (2000)). A specific way of implementing wall functions is also tested and assessed. The numerical procedure is tested by solving three fluid flow problems, namely, turbulent flow over a backward-facing step, turbulent boundary layer over a flat plate under zero-pressure gradients, and a turbulent free jet impinging onto a flat surface. The numerical method is then applied to solve the flow of a horizontal jet penetrating a quiescent fluid from an entry port beneath the free surface.

Samper-García, Paula, Vicenta Mestre-Escrivá, Elisabeth Malonda-Vidal, and Belén Mesurado. "Victimización en la escuela: relación de la crianza y variables funcionales- disfuncionales del desarrollo." Anales de Psicología 31, no. 3 (September 16, 2015): 849. http://dx.doi.org/10.6018/analesps.31.3.173291.

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<p>This study has the aim to analyze the different role of parental styles (affect and communication versus control), of functional developmental variables (empathy and adaptative coping styles) and dysfunctional variables (emotional instability and inefficient coping styles) in school victimization, or conversely with peer attachment. Participants were 418 Spanish adolescents, 224 girls and 194 boys, aged between 13 - 14 years old and attending year 7 and year 8 of secondary school. Structural equation modeling was carried out using the EQS program.</p>Results shows that parenting styles of affect and communication versus negative control are both directly related to functional and dysfunctional developmental variables. Negative control is also directly related to the school victimization. Also, functional variables are directly related to the school victimization and peer attachment, while dysfunctional variables only are related to school victimization. Finally, results and their possible implications are discussed.

Figorilli, Simone, Federico Pallottino, Giacomo Colle, Daniele Spada, Claudio Beni, Francesco Tocci, Simone Vasta, et al. "An Open Source Low-Cost Device Coupled with an Adaptative Time-Lag Time-Series Linear Forecasting Modeling for Apple Trentino (Italy) Precision Irrigation." Sensors 21, no. 8 (April 9, 2021): 2656. http://dx.doi.org/10.3390/s21082656.

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Precision irrigation represents those strategies aiming to feed the plant needs following the soil’s spatial and temporal characteristics. Such a differential irrigation requires a different approach and equipment with regard to conventional irrigation to reduce the environmental impact and the resources use while maximizing the production and thus profitability. This study described the development of an open source soil moisture LoRa (long-range) device and analysis of the data collected and updated directly in the field (i.e., weather station and ground sensor). The work produced adaptive supervised predictive models to optimize the management of agricultural precision irrigation practices and for an effective calibration of other agronomic interventions. These approaches are defined as adaptive because they self-learn with the acquisition of new data, updating the on-the-go model over time. The location chosen for the experimental setup is a cultivated area in the municipality of Tenna (Trentino, Alto Adige region, Italy), and the experiment was conducted on two different apple varieties during summer 2019. The adaptative partial least squares time-lag time-series modeling, in operative field conditions, was a posteriori applied in the consortium for 78 days during the dry season, producing total savings of 255 mm of irrigated water and 44,000 kW of electricity, equal to 10.82%.

Більше джерел

Дисертації з теми "Adaptative modeling":

Faisal, Behadili Suhad. "Adaptative modeling of urban dynamics with mobile phone database." Thesis, Le Havre, 2016. http://www.theses.fr/2016LEHA0017/document.

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Dans cette étude, on s’intéresse à l’étude de la mobilité urbaine à partir de traces de données de téléphonie mobile qui ont été fournies par l’opérateur Orange. Les données fournies concernent la région de la ville de Rouen, durant un événement éphémère qui est l’Armada de 2008. Dans une première étude, on gère une masse importante de données pour extraire des caractéristiques permettant de qualifier des usages de la ville lors d’évènements éphémères, en fonctions des jours d’activités ou de repos des individus. Des visualisations sont données et permettent de comprendre les mobilités engendrées de manière spécifique ou non par l’événement. Dans une seconde partie, on s’intéresse à la reconstitution de trajectoires avec des approches agrégées inspirées des techniques de physique statistique afin de dégager des comportements en fonction des périodes d’activités et d’un découpage spatial en grandes zones urbaines. On tente ainsi de dégager des lois en observant des distributions en loi de puissance caractéristiques de la complexité des systèmes étudiés
In this study, we are interested in the study of urban mobility from traces of mobile data that were provided by the operator Orange. The data provided relate to the region of the city of Rouen, during an ephemeral event that is the Armada of 2008. In a first study, a large amount of data is managed to extract characteristics allowing to qualify the uses of the city during ephemeral events, depending on the days of activity of the individuals. Visualizations are given and make it possible to understand the mobilities generated in a specific way during the event. In the second part, we study the reconstruction of trajectories with aggregated approaches inspired by statistical physics techniques in order to reveal behaviors according to periods of activity and a spatial division in large urban areas. In order to obtain the general mobility law by observing distributions in power law characteristic for the studied complex system

ARAUJO, TEREZA DENYSE PEREIRA DE. "ELASTO-PLASTIC ADAPTATIVE ANALYSIS FOR MODELING FRACTURE PROCESSES OF TWO-DIMENSIONAL STRUCTURES." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1999. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=1885@1.

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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
A análise de problemas mecânicos e estruturais, pelo método dos elementos finitos,requer do analista certa experiência na discretização do modelo para minimizar os erros das soluções. A geração da malha é uma tarefa árdua, que torna- se ainda mais difícil quando trincas estão presentes no modelo. Em um modelo discreto, cada vez que a trinca propaga, a geometria do modelo muda e a malha deve ser atualizada. Neste trabalho é apresentado um sistema gráfico interativo, para modelagem bidimensional de problemas de fraturamento estrutural. O sistema permite introduzir trincas em qualquer posição no modelo, regenerando sua malha e executando um processo auto-adaptativo de elementos finitos. Este sistema pode ser usado para problemas mecânicos, com ou sem trincas, elásticos lineares ou elastoplásticos. O processo auto-adaptativo está baseado em estimadores de erro a posteriori, com refinamento do tipo h. Três tipos de estimadores estão disponíveis. O primeiro, baseado na norma de energia, é aplicado na análise de problemas elásticos lineares. O segundo e o terceiro, baseados em tensão efetiva e na razão do trabalho plástico, respectivamente, são aplicados na análise de problemas elastoplásticos. A geração da malha está baseada em técnicas de enumeração espacial recursiva, que consiste de uma partição em árvore binária (binary tree) para as curvas do contorno, incluindo as curvas das trincas, e uma partição em árvore quaternária (quadtree) para a geração da malha no domínio. O sistema integra diferentes ferramentas: um modelador geométrico que cria a geometria do modelo, um pré-processador que gera a malha e aplica os atributos, um módulo de análise numérica que avalia a resposta de elementos finitos e um módulo, chamado de módulo adaptativo, que faz o gerenciamento do processo adaptativo das malhas e que também é um pós-processador que auxilia na visualização dos resultados, inclusive dos parâmetros de fratura. No processo adaptativo não linear, uma interpolação das variáveis de solução é realizada entre malhas para que a análise incremental da plasticidade continue. O critério deA análise de problemas mecânicos e estruturais, pelo método dos elementos finitos, requer do analista certa experiência na discretização do modelo para minimizar os erros das soluções. A geração da malha é uma tarefa árdua, que torna-se ainda mais difícil quando trincas estão presentes no modelo. Em um modelo discreto, cada vez que a trinca propaga, a geometria do modelo muda e a malha deve ser atualizada. Neste trabalho é apresentado um sistema gráfico interativo, para modelagem bidimensional de problemas de fraturamento estrutural. O sistema permite introduzir trincas em qualquer posição no modelo, regenerando sua malha e executando um processo auto-adaptativo de elementos finitos. Este sistema pode ser usado para problemas mecânicos, com ou sem trincas, elásticos lineares ou elastoplásticos. O processo auto-adaptativo está baseado em estimadores de erro a posteriori, com refinamento do tipo h. Três tipos de estimadores estão disponíveis. O primeiro, baseado na norma de energia, é aplicado na análise de problemas elásticos lineares. O segundo e o terceiro, baseados em tensão efetiva e na razão do trabalho plástico, respectivamente, são aplicados na análise de problemas elastoplásticos. A geração da malha está baseada em técnicas de enumeração espacial recursiva, que consiste de uma partição em árvore binária (binary tree) para as curvas do contorno, incluindo as curvas das trincas, e uma partição em árvore quaternária (quadtree) para a geração da malha no domínio. O sistema integra diferentes ferramentas: um modelador geométrico que cria a geometria do modelo, um pré-processador que gera a malha e aplica os atributos, um módulo de análise numérica que avalia a resposta de elementos finitos e um m
The numerical analysis of structural and mechanical problems by the finite element method requires, by the analyst, some knowledge and experience on mesh refinement. Mesh generation is a difficult task, especially when the model contains cracks. As the crack propagates in the discret model, the geometry of the model changes and the mesh must be updated. This work presents an interactive graphics system for modeling fracture processes of two-dimensional structures. This system may consider any number of cracks that can be inserted in the model at any position, with automatic and adaptive finite element mesh generation. The system can be used for linear and elastic-plastic mechanical problems, with and without cracks. The self-adaptive process is based on an h-type refinement, with an a posteriori error estimation. Three types of error estimators are available. The first, which is based on the energy norm, is used for elastic- linear analysis. The second and the third, which are based on effective stress and on ratio of plastic work, respectively, are used for elastic-plastic analysis. Mesh generation is based on spatial decomposition techniques, which consists on a binary tree partition of boundary curves, including crack curves, and on a quadtree partition for the domain refinement. The system incorporates the following components: a geometric modeler to create the model geometry, a pre- processor that generates the initial mesh and applies model attributes, a numerical analysis module that evaluates the finite element response, and a module, called the adaptive module, that manages the adaptive process of mesh generation. The latter module also incorporates post-processing features that assist in the visualization of analysis results, including fracture parameters. In the non- linear adaptive process for incremental plasticity analysis, it is used a technique for interpolating analysis variables across distinct meshes. The von Mises yielding criterion, with isotropic hardening, is used. Some examples are presented to evaluate the methods for computing fracture analysis parameters and the performance of the adaptive process.
El análisis de problemas mecánicos y extructurales, por el método de los elementos finitos, requiere del analista cierta experiencia en la discretización del modelo para minimizar el error de la solución. La generación de la malla es una tarea árdua, que resulta todavía más difícil cuando grietas están presentes en el modelo. En un modelo discreto, cada vez que la grietas se propaga, la geometría del modelo muda y se debe actualizar la malla. En este trabajo se presenta un sistema gráfico interactivo, para modelaje bidimensional de problemas de fractura extructural. El sistema permite introducir grietas en cualquier posición en el modelo, regenerando su malla y ejecutando un proceso autoadaptativo de elementos finitos. Este sistema puede ser usado en problemas mecánicos, con o sin grietas, elásticos lineales o elastoplásticos. EL proceso autoadaptativo está basado en estimadores a posteriori del error, con refinamientodel tipo h. Tres tipos de estimadores están disponibles. El primeiro, basado en la norma de energía, se aplica en el análisis de problemas elásticos lineales. El segundo y el tercero, basados en tensión efectiva y en la razón del trabajo plástico, respectivamente, se aplican en el análisis de problemas elastoplásticos. La generación de la malla está basada en técnicas de enumeración espacial recursiva, que consiste de una partición en árbol binaria (binary tree) para las curvas del contorno, incluyendo las curvas de las grietas, y una partición en árbol cuaternaria (quadtree) para la generación de la malla en el dominio. El sistema integra diferentes herramientas: un modelador geométrico que crea la geometría del modelo, un préprocesador que genera la malla y aplica los atributos, un módulo de análisis numérico que evalúa la resposta de elementos finitos y un módulo, llamado de módulo adaptativo, que se encarga de gerenciar el proceso adaptativo de las mallas y que también constituye un posprocesador que auxilia en la visualización de los resultados, incluso de los parámetros de fractura. En el proceso adaptativo no lineal, la interpolación de las variables de solución se realiza entre mallas para que el análisis incremental de la plasticidad continue. Se presentan ejemplos que permiten evaluar los métodos de cálculo de los parámetros de fractura y el desempeño del proceso adaptativo.

Ahmad, Manzoor. "Modeling and verification of functional and non functional requirements of ambient, self adaptative systems." Phd thesis, Université Toulouse le Mirail - Toulouse II, 2013. http://tel.archives-ouvertes.fr/tel-00965934.

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The overall contribution of this thesis is to propose an integrated approach for modeling and verifying the requirements of Self Adaptive Systems using Model Driven Engineering techniques. Model Driven Engineering is primarily concerned with reducing the gap between problem and software implementation domains through the use of technologies that support systematic transformation of problem level abstractions to software implementations. By using these techniques, we have bridged this gap through the use of models that describe complex systems at multiple levels of abstraction and through automated support for transforming and analyzing these models. We take requirements as input and divide it into Functional and Non Functional Requirements. We then use a process to identify those requirements that are adaptable and those that cannot be changed. We then introduce the concepts of Goal Oriented Requirements Engineering for modeling the requirements of Self Adaptive Systems, where Non Functional Requirements are expressed in the form of goals which is much more rich and complete in defining relations between requirements. We have identified some problems in the conventional methods of requirements modeling and properties verification using existing techniques, which do not take into account the adaptability features associated with Self Adaptive Systems. Our proposed approach takes into account these adaptable requirements and we provide various tools and processes that we developed for the requirements modeling and verification of Self Adaptive Systems. We validate our proposed approach by applying it on two different case studies in the domain of Self Adaptive Systems.

Andrade, Restrepo Martín. "Mathematical modeling and evolutionary processes." Thesis, Sorbonne Paris Cité, 2019. http://www.theses.fr/2019USPCC021.

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La recherche présentée dans cette thèse concerne différents sujets dans le domaine de la biomathématique. J’aborde diverses questions en biologie (et liées aux systèmes complexes) avec des méthodes mathématiques et numériques. Ces questions sont les suivantes: (i) Les processus passifs sont-ils suffisants pour justifier la distribution asymétrique des protéines endommagées pendant et après la cytokinèse de la levure? (ii) Quels processus sont à l’origine des schémas complexes d’expansion de l’amyloïde bêta dans le cerveau des patients atteints de la maladie d’Alzheimer? (iii) Qu’y a-t-il derrière la dichotomie de ‘clusters’ vs. ‘cline-like’ dans les modèles d’évolution le long de gradients environnementaux? (iv) Comment cette dichotomie affecte-t-elle la dynamique spatiale des invasions? (v) Comment la multi-stabilité se manifeste-t-elle dans ces modèles? Ces questions sont abordées (à différentes échelles, certaines totalement et certaines partiellement) avec différentes méthodes théoriques. Les résultats devraient permettre de mieux comprendre les processus biologiques analysés et de motiver la poursuite des travaux expérimentaux et empiriques susceptibles de contribuer à résoudre les incertitudes persistantes
The research presented in this thesis concerns different topics in the field of Biomathematics. I address diverse questions arising in biology (and related to complex systems) with mathematical and numerical methods. These questions are: (i) Are passive-processes enough to justify the asymmetric distribution of damaged proteins during and after yeast cytokinesis? (ii) What processes are behind the complex patterns of expansion of Amyloid beta in the brains of patients with Alzheimer’s disease? (iii) What is behind the clustering and cline-like dichotomy in models of evolution along environmental gradients? (iv) How does this dichotomy affect the spatial dynamics of invasions and range expansions? (v) How does multi-stability manifest in these models? These questions are approached (at different scales, some fully and some partially) with different theoretical methods. Results are expected to shed light on the biological processes analyzed and to motivate further experimental and empirical work which can help solve lingering uncertainties

Ghnemat, Rawan. "Modélisation adaptative pour l'émergence spatiale dans les systèmes complexes." Phd thesis, Université du Havre, 2009. http://tel.archives-ouvertes.fr/tel-00429162.

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L'objectif de ce travail consiste à mettre en place des modèles d'intelligence en essaim pour l'étude de l'émergence spatiale d'organisations dans des systèmes complexes auto-organisés, sous des contraintes multi-critères. Le contexte scientique de la formalisation dans le cadre de la modélisation des systèmes complexes est développé dans ce document. Une méthodologie est présentée et conduit au développement d'une heuristique complexe tissant des liens entre des modèles élémentaires bio-inspirés des algorithmes de type fourmis. Une application est développée et concerne la modélisation de l'usage de services - notamment des services culturels - en dynamique urbaine, ainsi que la modélisation des mécanismes d'adaptation de ces services en fonction de leurs usages.

Dutot, Antoine. "Distribution dynamique adaptative à l'aide de mécanismes d'intelligence collective." Phd thesis, Université du Havre, 2005. http://tel.archives-ouvertes.fr/tel-00453910.

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Ce travail présente une méthode de distribution dynamique et adaptative, pour des applications distribuées constituées de multiples entités en interaction, dans un environnement de calcul versatile. L'équilibrage de charge ainsi que la minimisation des coûts de communication sont pris en compte. La méthode proposée repose sur la détection d'organisations au sein de l'application afin de mieux la distribuer. Les organisations sont identifiées comme des groupes d'entités en très forte communication. Les organisations évoluent, apparaissent, se renforcent, s'affaiblissent et disparaissent. Les ressources disponibles de calcul sur lesquelles l'application s'exécutent varient également. Ces contraintes imposent à la distribution de s'adapter dynamiquement. La méthode est basée sur des colonies de fourmis numériques qui tentent de recruter les entités de l'application. Les fourmis coopèrent au sein d'une même colonie et sont en compétition lorsqu'elles n'appartiennent pas à une même colonie. Elles tentent de s'approprier les organisations au sein de l'application, chaque colonie travaillant pour une ressource de calcul distincte. La compétition inter-colonies permet la répartition de la charge. La collaboration au sein de chaque colonie permet la détection des organisations, en plaçant les très fortes communications ensembles sur la même ressource de calcul. Enfin la gestion de la population permet de prendre en compte l'hétérogénéité des ressources de calcul.

Huynh, Ngoc Tho. "A development process for building adaptative software architectures." Thesis, Ecole nationale supérieure Mines-Télécom Atlantique Bretagne Pays de la Loire, 2017. http://www.theses.fr/2017IMTA0026/document.

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Les logiciels adaptatifs sont une classe de logiciels qui peuvent modifier leur structure et comportement à l'exécution afin de s'adapter à des nouveaux contextes d'exécution. Le développement de logiciels adaptatifs a été un domaine de recherche très actif les dix dernières années. Plusieurs approches utilisent des techniques issues des lignes des produits afin de développer de tels logiciels. Ils proposent des outils, des frameworks, ou des langages pour construire des architectures logicielles adaptatives, mais ne guident pas les ingénieurs dans leur utilisation. De plus, ils supposent que tous les éléments spécifiés à la conception sont disponibles dans l'architecture pour l'adaptation, même s'ils ne seront jamais utilisés. Ces éléments inutiles peuvent être une cause de soucis lors du déploiement sur une cible dont l'espace mémoire est très contraint par exemple. Par ailleurs, le remplacement de composants à l'exécution reste une tâche complexe, elle doit assurer non seulement la validité de la nouvelle version, mais aussi préserver la terminaison correcte des transactions en cours. Pour faire face à ces problèmes, cette thèse propose un processus de développement de logiciels adaptatifs où les tâches, les rôles, et les artefacts associés sont explicites. En particulier, le processus vise la spécification d'informations nécessaires pour construire des architectures logicielles adaptatives. Le résultat d'un tel processus est une architecture logicielle adaptative qui contient seulement des éléments utiles pour l'adaptation. De plus, un mécanisme d'adaptation est proposé basé sur la gestion de transactions pour assurer une adaptation dynamique cohérente. Elle assure la terminaison correcte des transactions en cours. Nous proposons pour cela la notion de dépendance transactionnelle : dépendance entre des actions réalisées par des composants différents. Nous proposons la spécification de ces dépendances dans le modèle de variabilité, et de l'exploiter pour décider des fonctions de contrôle dans les composants de l'architecture, des fonctions qui assurent une adaptation cohérente à l'exécution
Adaptive software is a class of software which is able to modify its own internal structure and hence its behavior at runtime in response to changes in its operating environment. Adaptive software development has been an emerging research area of software engineering in the last decade. Many existing approaches use techniques issued from software product lines (SPLs) to develop adaptive software architectures. They propose tools, frameworks or languages to build adaptive software architectures but do not guide developers on the process of using them. Moreover, they suppose that all elements in the SPL specified are available in the architecture for adaptation. Therefore, the adaptive software architecture may embed unnecessary elements (components that will never be used) thus limiting the possible deployment targets. On the other hand, the components replacement at runtime remains a complex task since it must ensure the validity of the new version, in addition to preserving the correct completion of ongoing activities. To cope with these issues, this thesis proposes an adaptive software development process where tasks, roles, and associate artifacts are explicit. The process aims at specifying the necessary information for building adaptive software architectures. The result of such process is an adaptive software architecture that only contains necessary elements for adaptation. On the other hand, an adaptation mechanism is proposed based on transactions management for ensuring consistent dynamic adaptation. Such adaptation must guarantee the system state and ensure the correct completion of ongoing transactions. In particular, transactional dependencies are specified at design time in the variability model. Then, based on such dependencies, components in the architecture include the necessary mechanisms to manage transactions at runtime consistently

Carcreff, Ewen. "Déconvolution adaptative pour le contrôle non destructif par ultrasons." Thesis, Le Mans, 2014. http://www.theses.fr/2014LEMA1009/document.

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Nous nous intéressons au contrôle non destructif par ultrasons des matériaux industriels. En pratique, les signaux réceptionnés par le transducteur ultrasonore sont analysés pour détecter les discontinuités de la pièce inspectée. L'analyse est néanmoins rendue difficile par l'acquisition numérique, les effets de la propagation ultrasonore et la superposition des échos lorsque les discontinuités sont proches. La déconvolution parcimonieuse est une méthode inverse qui permet d'aborder ce problème afin de localiser précisément les discontinuités. Ce procédé favorise les signaux parcimonieux, c'est à dire ne contenant qu'un faible nombre de discontinuités. Dans la littérature, la déconvolution est généralement abordée sous l'hypothèse d'un modèle invariant en fonction de la distance de propagation, modalité qui n'est pas appropriée ici car l'onde se déforme au cours de son parcours et en fonction des discontinuités rencontrées. Cette thèse développe un modèle et des méthodes associées qui visent à annuler les dégradations dues à l'instrumentation et à la propagation ultrasonore, tout en résolvant des problèmes de superposition d'échos. Le premier axe consiste à modéliser la formation du signal ultrasonore en y intégrant les phénomènes propres aux ultrasons. Cette partie permet de construire un modèle linéaire mais non invariant, prenant en compte l'atténuation et la dispersion. L'étape de modélisation est validée par des acquisitions avec des matériaux atténuants. La deuxième partie de cette thèse concerne le développement de méthodes de déconvolution efficaces pour ce problème, reposant sur la minimisation d'un critère des moindres carrés pénalisé par la pseudo-norme L0. Nous avons développé des algorithmes d'optimisation spécifiques, prenant en compte, d'une part, un modèle de trains d'impulsions sur-échantillonné par rapport aux données, et d'autre part le caractère oscillant des formes d'onde ultrasonores. En utilisant des données synthétiques et expérimentales, ces algorithmes associés à un modèle direct adapté aboutissent à de meilleurs résultats comparés aux approches classiques pour un coût de calcul maîtrisé. Ces algorithmes sont finalement appliqués à des cas concrets de contrôle non destructif où ils démontrent leur efficacité
This thesis deals with the ultrasonic non destructive testing of industrial parts. During real experiments, the signals received by the acoustic transducer are analyzed to detect the discontinuities of the part under test. This analysis can be a difficult task due to digital acquisition, propagation effects and echo overlapping if discontinuities are close. Sparse deconvolution is an inverse method that aims to estimate the precise positions of the discontinuities. The underlying hypothesis of this method is a sparse distribution of the solution, which means there are a few number of discontinuities. In the literature, deconvolution is addressed by a linear time-invariant model as a function of propagation distance, which in reality does not hold.The purpose of this thesis is therefore to develop a model and associated methods in order to cancel the effects of acquisition, propagation and echo overlapping. The first part is focused on the direct model development. In particular, we build a linear time-variant model that takes into account dispersive attenuation. This model is validated with experimental data acquired from attenuative materials. The second part of this work concerns the development of efficient sparse deconvolution algorithms, addressing the minimization of a least squares criterion penalized by a L0 pseudo-norm. Specific algorithms are developed for up-sampled deconvolution, and more robust exploration strategies are built for data containing oscillating waveforms. By using synthetic and experimental data, we show that the developed methods lead to better results compared to standard approaches for a competitive computation time. The proposed methods are then applied to real non destructive testing problems where they confirm their efficiency

Biot, Claire. "BCG immunotherapy for bladder cancer : characterization and modeling of the bladder immune response to BCG identify strategies for improving anti-tumor activity." Paris 6, 2012. http://www.theses.fr/2012PA066009.

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L’instillation intravésicale de BCG comme traitement adjuvant du cancer de la vessie est l’un des seuls exemples efficaces d’immunothérapie utilisée en clinique, mais ses mécanismes d’action ne sont pas précisément définis. J’ai établi un modèle de souris pour étudier la dynamique de la réponse immune induite par l’administration intravésicale de BCG. Si une seule instillation est suffisante pour induire la dissémination du BCG dans les ganglions lymphatiques drainant la vessie et l’activation de lymphocytes T, des instillations répétées de BCG vivant sont nécessaires pour obtenir une robuste infiltration de lymphocytes T dans la vessie. Toutefois, l’immunisation préalable des souris par voie sous-cutanée conduit à un processus inflammatoire aigu accentué dès la première instillation, suggérant une réaction d’hypersensibilité de type retardé, et accélère le recrutement des lymphocytes T. Cela se traduit par l’amélioration considérable de la réponse anti-tumorale, et l’analyse de données cliniques révèle un avantage pour les patients ayant la signature d’une réponse immune au BCG avant traitement. Ainsi je suggère que l’immunisation parentérale par le BCG des patients négatifs pour le test tuberculinique, avant la thérapie intravésicale, pourrait améliorer la réponse au traitement. Par ailleurs, j’ai contribué à la construction et au paramétrage d’un modèle mathématique décrivant les interactions entre le BCG, le système immunitaire, la vessie et les cellules tumorales. Notre modèle souligne l’importance de la réponse immune adaptative pour l’extinction tumorale et contribue à prédire des paramètres cliniques optimaux pour la BCG thérapie
Intravesical instillation of bacillus Calmette-Guérin (BCG) for bladder cancer is one of the few examples of successful immunotherapy in the clinic, though its precise mechanisms of action remain unclear. I established a mouse model to study the dynamics of the immune response following intravesical BCG. I demonstrated that BCG dissemination to bladder draining lymph nodes and T cell priming could occur following a single instillation; yet, repeated instillations with live BCG were necessary for a robust T cell infiltration in the bladder. Subcutaneous immunization with BCG prior to intravesical instillation overcame this requirement, triggering enhanced inflammation, suggestive of a delayed-type hypersensitivity reaction, and accelerating T cell entry into the bladder. Such findings translated into an improved anti-tumor response in mice that were subcutaneously immunized with BCG prior to intravesical treatment of an orthotopic tumor, while analysis of clinical data showed that patients with pre-existing immunity to BCG had significantly longer recurrence-free survival. I also contributed to construct and parameterize a mathematical model describing the interactions between BCG, the immune system, bladder mucosa and tumor cells. The model suggested a requirement for the adaptive immune response to achieve tumor extinction rates similar to the clinic, and helped predict optimal clinical parameters for BCG therapy. Together these data provide new insights into a long-standing clinically effective immunotherapy and predict strategies that may improve patient management, such as the parenteral exposure of patients without immune signature to BCG prior to intravesical therapy

Xie, Meiling. "Indoor radio propagation modeling for system performance prediction." Thesis, Lyon, INSA, 2013. http://www.theses.fr/2013ISAL0074/document.

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Cette thèse a pour but de proposer toutes les avancées possibles dans l’utilisation du modèle de propagation Multi-Resolution Frequency-Domain ParFlow (MR-FDPF). Etant un modèle de propagation radio déterministe, le modèle MR-FDPF possède un haut niveau de précision, mais souffre des limitations communes à tous les modèles déterministes. Par exemple, un canal radio réel n’est pas déterministe, mais un processus aléatoire à cause par exemple des personnes ou objets mobiles, et ne peut donc être décrit fidèlement par un modèle purement déterministe. Dans cette thèse, un modèle semi-déterministe est proposé, basé sur le modèle MR-FDPF, qui introduit une part stochastique pour tenir compte des aspects aléatoires du canal radio réaliste. La partie déterministe du modèle est composée du path loss (atténuation d’espace), et la partie stochastique venant du shadow fading (masquage) et du small scale fading (évanouissement). De même, de nombreux simulateurs de propagation radio ne proposent que la prédiction de la puissance moyenne. Mais pour une simulation précise de la propagation radio il convient de prédire également des informations de fading permettant dès lors une prédiction précise du taux d’erreur binaire (BER) potentiel. Dans cette thèse, l’information de fading est déduite des simulations MR-FDPF et par la suite des valeurs réalistes de BER sont données. Enfin, ces données réalistes de BER permettent d’évaluer l’impact de schémas de modulation adaptatifs. Des résultats sont présentés dans trois configurations : systèmes SISO (mono-antenne à l’émission et à la réception), systèmes à diversité de type MRC, et systèmes large bande de type OFDM
This thesis aims at proposing all the possible enhancements for the Multi-Resolution Frequency-Domain ParFlow (MR-FDPF) model. As a deterministic radio propagation model, the MR-FDPF model possesses the property of a high level of accuracy, but it also suffers from some common limitations of deterministic models. For instance, realistic radio channels are not deterministic but a kind of random processes due to, e.g. moving people or moving objects, thus they can not be completely described by a purely deterministic model. In this thesis, a semi-deterministic model is proposed based on the deterministic MR-FDPF model which introduces a stochastic part to take into account the randomness of realistic radio channels. The deterministic part of the semi-deterministic model is the mean path loss, and the stochastic part comes from the shadow fading and the small scale fading. Besides, many radio propagation simulators provide only the mean power predictions. However, only mean power is not enough to fully describe the behavior of radio channels. It has been shown that fading has also an important impact on the radio system performance. Thus, a fine radio propagation simulator should also be able to provide the fading information, and then an accurate Bit Error Rate (BER) prediction can be achieved. In this thesis, the fading information is extracted based on the MR-FDPF model and then a realistic BER is predicted. Finally, the realistic prediction of the BER allows the implementation of the adaptive modulation scheme. This has been done in the thesis for three systems, the Single-Input Single-Output (SISO) systems, the Maximum Ratio Combining (MRC) diversity systems and the wideband Orthogonal Frequency-Division Multiplexing (OFDM) systems

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Masthoff, Judith, Bamshad Mobasher, Michel C. Desmarais, and Roger Nkambou, eds. User Modeling, Adaptation, and Personalization. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-31454-4.

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De Bra, Paul, Alfred Kobsa, and David Chin, eds. User Modeling, Adaptation, and Personalization. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-13470-8.

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Ricci, Francesco, Kalina Bontcheva, Owen Conlan, and Séamus Lawless, eds. User Modeling, Adaptation and Personalization. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-20267-9.

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Dimitrova, Vania, Tsvi Kuflik, David Chin, Francesco Ricci, Peter Dolog, and Geert-Jan Houben, eds. User Modeling, Adaptation, and Personalization. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-08786-3.

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Carberry, Sandra, Stephan Weibelzahl, Alessandro Micarelli, and Giovanni Semeraro, eds. User Modeling, Adaptation, and Personalization. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-38844-6.

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Houben, Geert-Jan, Gord McCalla, Fabio Pianesi, and Massimo Zancanaro, eds. User Modeling, Adaptation, and Personalization. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-02247-0.

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Surampalli, Rao Y. Climate change modeling, mitigation, and adaptation. Reston, Virginia: American Society of Civil Engineers, 2013.

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Martín, Estefanía, Pablo A. Haya, and Rosa M. Carro, eds. User Modeling and Adaptation for Daily Routines. London: Springer London, 2013. http://dx.doi.org/10.1007/978-1-4471-4778-7.

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Bürgler, Josef F. Discretization and grid adaptation in semiconductor device modeling. Konstanz: Hartung-Gorre, 1990.

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Boschian, V., A. Pruski, and C. Laurent. "Adaptative Grid for Autonomous Robot, Environment Modeling." In Advances in Robot Kinematics, 28–36. Vienna: Springer Vienna, 1991. http://dx.doi.org/10.1007/978-3-7091-4433-6_4.

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Flores-Moreno, J. M., Cosme Furlong, and John J. Rosowski. "Adaptative reconstruction distance in a lensless Digital Holographic Otoscope." In Optical Measurements, Modeling, and Metrology, Volume 5, 229–34. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4614-0228-2_27.

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Lamolle, Myriam, Maurizio Mancini, Catherine Pelachaud, Sarkis Abrilian, Jean-Claude Martin, and Laurence Devillers. "Contextual Factors and Adaptative Multimodal Human-Computer Interaction: Multi-level Specification of Emotion and Expressivity in Embodied Conversational Agents." In Modeling and Using Context, 225–39. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/11508373_17.

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Duval, Arnaud, Yves Chemisky, Mohamed Haboussi, and Tarak Ben Zineb. "Modeling of the Martensite Transformation and Reorientation in SMA under Thermomechanical Loading. Design of Finite Element Adaptative Micro-Components." In ICOMAT, 677–82. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118803592.ch104.

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Müller, Gilbert. "Workflow Adaptation." In Workflow Modeling Assistance by Case-based Reasoning, 109–65. Wiesbaden: Springer Fachmedien Wiesbaden, 2018. http://dx.doi.org/10.1007/978-3-658-23559-8_5.

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Dalpiaz, Fabiano, Estefanía Serral, Pedro Valderas, Paolo Giorgini, and Vicente Pelechano. "A NFR-Based Framework for User-Centered Adaptation." In Conceptual Modeling, 439–48. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-34002-4_34.

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Manousis, Petros, Panos Vassiliadis, and George Papastefanatos. "Automating the Adaptation of Evolving Data-Intensive Ecosystems." In Conceptual Modeling, 182–96. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-41924-9_17.

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Wang, Zheng, Ruimin Hu, Chao Liang, Junjun Jiang, Kaimin Sun, Qingming Leng, and Bingyue Huang. "Person Re-identification Using Data-Driven Metric Adaptation." In MultiMedia Modeling, 195–207. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-14442-9_17.

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Wang, Fei, Youdong Ding, Huan Liang, and Jing Wen. "Discriminative and Selective Pseudo-Labeling for Domain Adaptation." In MultiMedia Modeling, 365–77. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-67832-6_30.

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Holmes, Seth H. "Resilient Design Modeling." In Climate Adaptation and Resilience Across Scales, 6–34. New York: Routledge, 2021. http://dx.doi.org/10.4324/9781003030720-2.

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Habieb-Mammar, Halima, Franck Tarpin-Bernard, and Patrick Prevot. "Modeling hypermedia documents for adaptative presentation." In the 15th French-speaking conference on human-computer interaction. New York, New York, USA: ACM Press, 2003. http://dx.doi.org/10.1145/1063669.1063685.

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Castillo, O., and D. Blatter. "Modeling and Inversion 3D Electromagnetic Datasets on HPC Platforms." In 10th International Conference on Adaptative Modeling and Simulation. CIMNE, 2021. http://dx.doi.org/10.23967/admos.2021.056.

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Muñoz, D., E. Nadal, J. Albelda, and J. Ródenas. "Prosthesis Optimization Using Contact Formulation in the Cartesian Grid Finite Element Method (cgFEM) Framework." In 10th International Conference on Adaptative Modeling and Simulation. CIMNE, 2021. http://dx.doi.org/10.23967/admos.2021.069.

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Legentil, C., J. Pellerin, P. Cupillard, and G. Caumon. "Testing Scenarios on Geological Models: Local Interface Insertion in a 2D Mesh and its Impact on Seismic Wave Simulation." In 10th International Conference on Adaptative Modeling and Simulation. CIMNE, 2021. http://dx.doi.org/10.23967/admos.2021.077.

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Звіти організацій з теми "Adaptative modeling":

Yang, Jie, Weier Lu, and Alex Waibel. Skin-Color Modeling and Adaptation,. Fort Belvoir, VA: Defense Technical Information Center, May 1997. http://dx.doi.org/10.21236/ada327881.

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Zimmerman, Albert H. Adaptation and Speciation in Genetic Modeling of Physical Systems. Fort Belvoir, VA: Defense Technical Information Center, September 2009. http://dx.doi.org/10.21236/ada514694.

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Russell, H. A. J., and S. K. Frey. Canada One Water: integrated groundwater-surface-water-climate modelling for climate change adaptation. Natural Resources Canada/CMSS/Information Management, 2021. http://dx.doi.org/10.4095/329092.

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Canada 1 Water is a 3-year governmental multi-department-private-sector-academic collaboration to model the groundwater-surface-water of Canada coupled with historic climate and climate scenario input. To address this challenge continental Canada has been allocated to one of 6 large watershed basins of approximately two million km2. The model domains are based on natural watershed boundaries and include approximately 1 million km2 of the United States. In year one (2020-2021) data assembly and validation of some 20 datasets (layers) is the focus of work along with conceptual model development. To support analysis of the entire water balance the modelling framework consists of three distinct components and modelling software. Land Surface modelling with the Community Land Model will support information needed for both the regional climate modelling using the Weather Research & Forecasting model (WRF), and input to HydroGeoSphere for groundwater-surface-water modelling. The inclusion of the transboundary watersheds will provide a first time assessment of water resources in this critical international domain. Modelling is also being integrated with Remote Sensing datasets, notably the Gravity Recovery and Climate Experiment (GRACE). GRACE supports regional scale watershed analysis of total water flux. GRACE along with terrestrial time-series data will serve provide validation datasets for model results to ensure that the final project outputs are representative and reliable. The project has an active engagement and collaborative effort underway to try and maximize the long-term benefit of the framework. Much of the supporting model datasets will be published under open access licence to support broad usage and integration.

Anderson, Timothy, A. R. Aminzadeh, Jennifer Drexler, and Wade Shen. Improved Phrase Translation Modeling Using Maximum A-Posteriori (MAP) Adaptation. Fort Belvoir, VA: Defense Technical Information Center, July 2013. http://dx.doi.org/10.21236/ada604450.

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Chen, Yan, Christopher Nwagboso, and Panagiotis Georgakis. Modelling Integrated Safety Systems With Collision Avoidance and Intelligent Speed Adaptation. Warrendale, PA: SAE International, May 2005. http://dx.doi.org/10.4271/2005-08-0260.

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Guertin, Patrick J., Scott A. Tweddale, and George Z. Gertner. Prediction and Adaptation of Military Natural Infrastructure in Response to Climate Change: Forest Modeling. Fort Belvoir, VA: Defense Technical Information Center, September 2012. http://dx.doi.org/10.21236/ada586630.

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Pirohov, Vladyslav M., Anna M. Horlo, and Iryna S. Mintii. Software development of the algorithm of adaptating of the website design for people with color-blindness. [б. в.], December 2018. http://dx.doi.org/10.31812/123456789/2888.

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The purpose of the study is the program implementation of the basic algorithms of the website design adaptation for people with color perception. This article examines the implementation of the following algorithms: the conversion algorithm from the rgb color model to the lms model (there is a special algorithm precisely in the color model lms for modeling various types of color perception violations), simulation of different color blindness types in the lms-model (this is the transformation of normal values in the color model lms to values with different types of color perception violations), convert data from lms color model to rgb model, conversion from color rgb to hsl model, color filtering in hsl-model and conversion from hsl model to rgb color model.

Neymark, J., M. Kennedy, R. Judkoff, J. Gall, D. Knebel, R. Henninger, M. Witte, et al. Airside HVAC BESTEST. Adaptation of ASHRAE RP 865 Airside HVAC Equipment Modeling Test Cases for ASHRAE Standard 140. Volume 1, Cases AE101-AE445. Office of Scientific and Technical Information (OSTI), March 2016. http://dx.doi.org/10.2172/1244668.

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Tuller, Markus, Asher Bar-Tal, Hadar Heller, and Michal Amichai. Optimization of advanced greenhouse substrates based on physicochemical characterization, numerical simulations, and tomato growth experiments. United States Department of Agriculture, January 2014. http://dx.doi.org/10.32747/2014.7600009.bard.

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Over the last decade there has been a dramatic shift in global agricultural practice. The increase in human population, especially in underdeveloped arid and semiarid regions of the world, poses unprecedented challenges to production of an adequate and economically feasible food supply to undernourished populations. Furthermore, the increased living standard in many industrial countries has created a strong demand for high-quality, out-of-season vegetables and fruits as well as for ornamentals such as cut and potted flowers and bedding plants. As a response to these imminent challenges and demands and because of a ban on methyl bromide fumigation of horticultural field soils, soilless greenhouse production systems are regaining increased worldwide attention. Though there is considerable recent empirical and theoretical research devoted to specific issues related to control and management of soilless culture production systems, a comprehensive approach that quantitatively considers all relevant physicochemical processes within the growth substrates is lacking. Moreover, it is common practice to treat soilless growth systems as static, ignoring dynamic changes of important physicochemical and hydraulic properties due to root and microbial growth that require adaptation of management practices throughout the growth period. To overcome these shortcomings, the objectives of this project were to apply thorough physicochemical characterization of commonly used greenhouse substrates in conjunction with state-of-the-art numerical modeling (HYDRUS-3D, PARSWMS) to not only optimize management practices (i.e., irrigation frequency and rates, fertigation, container size and geometry, etc.), but to also “engineer” optimal substrates by mixing organic (e.g., coconut coir) and inorganic (e.g., perlite, pumice, etc.) base substrates and modifying relevant parameters such as the particle (aggregate) size distribution. To evaluate the proposed approach under commercial production conditions, characterization and modeling efforts were accompanied by greenhouse experiments with tomatoes. The project not only yielded novel insights regarding favorable physicochemical properties of advanced greenhouse substrates, but also provided critically needed tools for control and management of containerized soilless production systems to provide a stress-free rhizosphere environment for optimal yields, while conserving valuable production resources. Numerical modeling results provided a more scientifically sound basis for the design of commercial greenhouse production trials and selection of adequate plant-specific substrates, thereby alleviating the risk of costly mistrials.

Banerjee, Onil, Martin Cicowiez, Ana Rios, and Cicero De Lima. Climate Change Impacts on Agriculture in Latin America and the Caribbean: An Application of the Integrated Economic-Environmental Modeling (IEEM) Platform. Inter-American Development Bank, November 2021. http://dx.doi.org/10.18235/0003794.

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In this paper, we assess the economy-wide impact of Climate Change (CC) on agriculture and food security in 20 Latin American and the Caribbean (LAC) countries. Specifically, we focus on the following three channels through which CC may affect agricultural and non-agricultural production: (i) agricultural yields; (ii) labor productivity in agriculture, and; (iii) economy-wide labor productivity. We implement the analysis using the Integrated Economic-Environmental Model (IEEM) and databases for 20 LAC available through the OPEN IEEM Platform. Our analysis identifies those countries most affected according to key indicators including Gross Domestic Product (GDP), international commerce, sectoral output, poverty, and emissions. Most countries experience negative impacts on GDP, with the exception of the major soybean producing countries, namely, Brazil, Argentina and Uruguay. We find that CC-induced crop productivity and labor productivity changes affect countries differently. The combined impact, however, indicates that Belize, Nicaragua, Guatemala and Paraguay would fare the worst. Early identification of these hardest hit countries can enable policy makers pre-empting these effects and beginning the design of adaptation strategies early on. In terms of greenhouse gas emissions, only Argentina, Chile and Uruguay would experience small increases in emissions.