Modélisation d'un système dynamique. Les contraintes climatiques en milieu viti-vinicole (A model for a dynamic system. The climatic constraints in viticulture)

1986 ◽  
Vol 63 (5) ◽  
pp. 381-391
Author(s):  
Y. Crespin
Keyword(s):  
Dynamic System ◽  
Système Dynamique ◽  
Climatic Constraints

scholarly journals Un modèle de tâches exploitable à l'exécution pour une assistance à l'utilisateur dans les environnements ambiants

2015 ◽  
Vol Volume 3, Issue 3, Special... (Special issue on Task Models) ◽  
Author(s):  
Asma Gharsellaoui ◽  
Yacine Bellik ◽  
Christophe Jacquet
Keyword(s):  
Dynamic System ◽  
Support System ◽  
Dynamic Characteristics ◽  
Intervention Strategy ◽  
Nous Proposons ◽  
Supervision System ◽  
Système Dynamique ◽  
Task Model ◽  
International Audience ◽  
User Actions

International audience Existing task models have often been used in the context of graphic systems. In this paper, we propose to use the task model at runtime to monitor user actions, to verify that he/she has not made a mistake when performing his/her actions and to give him/her help when necessary. In particular, we present, as a first contribution, a task model specific to interactions in ambient environments. This model enables to assign dynamic characteristics to each task thereby allowing to a supervision system to assign states to tasks at runtime based on the information exchanged with the environment (start of a task, end of a task, preconditions states...). Our second contribution is a monitoring and support system that exploits our task model. More precisely we specify the intervention strategy of our system in order to guide the user. We present then an illustration of our system through the execution of a scenario on our simulator. This simulation shows how the interactions with the task model at runtime allow us to produce a dynamic system that takes into consideration the context and provides assistance to the users while carrying out their daily tasks. Finally, we end with a conclusion and perspectives of our approach. Les modèles de tâches existants ont souvent été utilisés dans le cadre des systèmes interactifs gra-phiques. Dans cet article, nous proposons d'utiliser le modèle de tâches dans un environnement ambiant au moment de l'exécution des tâches par l'utilisateur, afin de suivre les actions de l'utilisateur, vérifier qu'il n'a pas fait d'erreurs lors de l'accomplissement de ses tâches et lui procurer de l'aide quand cela est nécessaire. En particulier, nous présentons, dans une première contribution, un modèle de tâches spécifique aux environnements ambiants. Ce modèle permet d'associer des caractéristiques dynamiques à chaque tâche permettant ainsi à un système de supervision d'attribuer des états aux tâches au moment de l'exécution en fonction des informations échangées avec l'environnement (démarrage d'une tâche, fin de réalisation d'une tâche, états des pré-conditions...). Notre deuxième contribution consiste en un système de suivi et d'assistance qui exploite notre modèle de tâches. Plus précisément nous spécifions la stratégie d'intervention du système qui va orienter l'utilisateur. Nous présentons par la suite une illustration de notre système à travers le déroulement d'un scénario sur notre simulateur. Cette simulation montre comment les interactions avec le modèle de tâches à l'exécution nous permettent de produire un système dynamique, qui prend en considération le contexte et fournit une aide à l'utilisateur pour la réalisation de ses tâches quotidiennes. Enfin, nous terminons par une conclusion sur notre approche et les perspectives ouvertes pour ce travail.

ANALYSIS OF THE UNIVERSITY S VIABILITY AS COMPLEX DYNAMIC SYSTEM

2018 ◽  
Vol 27 (103) ◽  
pp. 264-272 ◽  
Author(s):  
V. P. Mygal, ◽  
◽  
G. V. Mygal
Keyword(s):  
Dynamic System ◽  
Complex Dynamic ◽  
Complex Dynamic System ◽  
The University

OPTIMAL LINEAR CONTROL APPLIED IN A ENERGY HARVESTING DYNAMIC SYSTEM WITH PERIODIC EXCITATION

2019 ◽  
Author(s):  
Estevão Fuzaro de Almeida ◽  
Fabio Roberto Chavarette ◽  
Douglas da Costa Ferreira
Keyword(s):  
Energy Harvesting ◽  
Dynamic System ◽  
Linear Control ◽  
Periodic Excitation ◽  
Optimal Linear

Development of Sales Modules for Agricultural E-Commerce Using Dynamic System Development Method

2019 ◽  
Vol 5 (2) ◽  
pp. 95-103
Author(s):  
Rosa Delima ◽  
Halim Budi Santoso ◽  
Gerry Herbiyan Aditya ◽  
Joko Purwadi ◽  
Argo Wibowo
Keyword(s):  
Dynamic System ◽  
Communication Technology ◽  
Process Model ◽  
System Development ◽  
Functional Model ◽  
Agricultural Products ◽  
Development Method ◽  
Short Development Time ◽  
Information And Communication ◽  
Business Study

E-Commerce is a process model of selling and buying goods using information and communication technology. This business model offers a broad market for products owned by the seller. However this sales model is not yet common for agricultural products. Most of the process of buying and selling agricultural products is still done conventionally. The lack of agricultural e-commerce sites is the main reason for the research conducted. This research will develop an agricultural e-commerce system. This system has two main modules that are sales module and purchasing module. This article specifically develops sales modules for agricultural e-commerce. In the development of modules applied Dynamic System Development Method. The used of this model is based on characteristic of the project which have limited number of development team and short development time. The development stages consist of pre-project, feasibility study, business study, functional model iteration, and design and build iteration. In this study a prototype has been produced for the sales module on agricultural e-commerce that is being developed

Commandabilité d'un système dynamique linéaire

1975 ◽  
Vol 26 (5) ◽  
pp. 839-847
Author(s):  
J.-P. Guérin ◽  
B. Lamrani ◽  
B. A. Oudet
Keyword(s):  
Système Dynamique

Transient response of the 1-st order dynamic system with fluctuating parameters

1979 ◽  
Vol 44 (7) ◽  
pp. 2184-2195
Author(s):  
Vladimír Herles ◽  
Jan Čermák ◽  
Antonín Havlíček
Keyword(s):  
Dynamic System ◽  
Dynamic Behavior ◽  
Transient Response ◽  
Flow Model ◽  
Stirred Tank ◽  
Order System ◽  
Random Parameters ◽  
Stirred Tank Reactor ◽  
Tank Reactor ◽  
Theoretical Results

The paper deals with the analysis of the dynamic behavior of the 1st order system with two random parameters. The theoretical results have been compared with experiments on flow model of a stirred tank reactor.

scholarly journals Set-membership identifiability of nonlinear models and related parameter estimation properties

2016 ◽  
Vol 26 (4) ◽  
pp. 803-813 ◽  
Author(s):  
Carine Jauberthie ◽  
Louise Travé-MassuyèEs ◽  
Nathalie Verdière
Keyword(s):  
Mathematical Model ◽  
Parameter Estimation ◽  
Dynamic System ◽  
Nonlinear Models ◽  
Differential Algebra ◽  
Related Parameter ◽  
Set Membership ◽  
Estimation Problems ◽  
The Mathematical Model

Abstract Identifiability guarantees that the mathematical model of a dynamic system is well defined in the sense that it maps unambiguously its parameters to the output trajectories. This paper casts identifiability in a set-membership (SM) framework and relates recently introduced properties, namely, SM-identifiability, μ-SM-identifiability, and ε-SM-identifiability, to the properties of parameter estimation problems. Soundness and ε-consistency are proposed to characterize these problems and the solution returned by the algorithm used to solve them. This paper also contributes by carefully motivating and comparing SM-identifiability, μ-SM-identifiability and ε-SM-identifiability with related properties found in the literature, and by providing a method based on differential algebra to check these properties.

Sign in / Sign up

Export Citation Format

Share Document