Добірка наукової літератури з теми "Conception de mission"
Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями
Ознайомтеся зі списками актуальних статей, книг, дисертацій, тез та інших наукових джерел на тему "Conception de mission".
Біля кожної праці в переліку літератури доступна кнопка «Додати до бібліографії». Скористайтеся нею – і ми автоматично оформимо бібліографічне посилання на обрану працю в потрібному вам стилі цитування: APA, MLA, «Гарвард», «Чикаго», «Ванкувер» тощо.
Також ви можете завантажити повний текст наукової публікації у форматі «.pdf» та прочитати онлайн анотацію до роботи, якщо відповідні параметри наявні в метаданих.
Статті в журналах з теми "Conception de mission":
1
Benton, Gregory M. "Multiple Goal Conveyance in a State Park Interpretive Boat Cruise." Journal of Interpretation Research 16, no. 2 (November 2011): 7–21. http://dx.doi.org/10.1177/109258721101600202.
Анотація:
The qualitative case study examined interpretive programs for four sets of management goals. A proposed model, Four Conceptions of Interpretation, previously tested in national parks, was retested in a state park. The four conceptions are (a) connecting visitors to resources, (b) conveying agency mission and influencing behavior, (c) encouraging environmental literacy, and (d) promoting tourism. The hypothesis was that evidence of all four conceptions would be found in visitor recall of interpretive programs. Analysis found conceptions one and two strongly recalled by visitors. Conception three, environmental literacy, was conveyed by staff and moderately recalled by visitors. Conception four, tourism, identified in the Arkansas State Parks mission and opening dedication speeches, did not find its way into programs. Findings suggest that all four conceptions identified in foundational literature, mission, overall park vision, and staff interview did not trickle down into interpretive practice; it was not recalled by visitors in programs.
2
Shen, Ying, Jun Hai Cao, Zhi Wei Shan, and Fu Sheng Liu. "Study on System Reliability Allocation Based on Adaptive Agent Simulation." Applied Mechanics and Materials 448-453 (October 2013): 2411–15. http://dx.doi.org/10.4028/www.scientific.net/amm.448-453.2411.
Анотація:
In the given mission environment, the reliability models of materiel system are mixed and made up of series, paralleling and by-pass, and usually dynamic in the mission profile with multi-task phases, with some uncertainty. The method must be combined with Conception Comprehensive Evaluating Model, Conception Optimizing and Improving Method, and formats closed loop process of conception optimization. The method applies to either basic reliability allocation or mission reliability allocation, considers the change of system environment to the effect on mission, and determines system reliability allocation conception oriented on mission, with relative optimization and better application.
3
Verquin-Savarieau, Béatrice. "Formation à distance et activité du stagiaire de la formation professionnelle continue." Phronesis 3, no. 1-2 (April 17, 2014): 49–57. http://dx.doi.org/10.7202/1024588ar.
Анотація:
Quels contenus des lettres de missions pour quelles démarches et activités d’ingénierie de formation, pour des étudiants salariés en activité et suivant leurs études à distance ? Cet article questionne le stage de formation professionnelle continue dans le cadre d’une formation hybride. Il s’agit d’interroger en particulier la conception de la mission de stage, en tant que contenu opératoire facilitant les transformations des sujets dans l’action. Nous présenterons le rôle crucial joué par la lettre de mission, en tant qu’outil d’ajustement et de régulation d’une commande ou d’une auto-commande aux attentes de l’université. La méthodologie présentée consiste dans une grille d’analyse des démarches d’ingénierie de formation, construite à partir de la lecture de quatre domaines d’activités. L’analyse des activités n’est pas dans ce dispositif une modalité de formation, mais nous permet de questionner la conception du dispositif de formation.
4
Staniūnas, Eugenijus. "Modern Conception of the Mission of Architecture in Architectural Theory and Practice." Architecture and Urban Planning 12, no. 1 (December 1, 2016): 6–10. http://dx.doi.org/10.1515/aup-2016-0008.
Анотація:
Abstract The article aims to analyse the contemporary conception of mission of architecture. The analysis is done by comparing the conception with principles of rationally organised activity, first of all clarity. The analysis revealed that the description of the mission is unclear and there are logical contradictions between the general definition and elaborated details of it. Two different “philosophies” govern architecture – the theoretically declared one and the one that is used in practice. It was concluded that there is a need for the modernisation of paradigm of architecture.
5
Vidal, Gilles. "Maurice Leenhardt, explorateur de l’altérité." Revue d'histoire du protestantisme 9, no. 1 (April 4, 2024): 111–25. http://dx.doi.org/10.47421/rhp_9.1_111-125.
Анотація:
Maurice Leenhardt (1878-1954), est missionnaire de la Société des Missions Évangéliques de Paris en Nouvelle-Calédonie et ethnologue, ami de Lucien Lévy-Bruhl et de Marcel Mauss. Tout en étant inséré dans la mentalité coloniale des années 1930, il développe une conception originale de la mission chrétienne. Gilles Vidal montre comment, pour Leenhardt, la conversion spirituelle passe d’abord par une prise de conscience morale qui élève tout être, sans distinction de « race », à la dignité humaine. Il faut pour cela mobiliser les ressources des sciences sociales afin de parvenir à une connaissance authentique de la culture de l’autre. Leenhardt soutient une position humaniste et idéaliste qui prétend découvrir l’« âme » de l’autre et articuler ainsi « harmonieusement » mission et colonisation.
6
Alegre, Inés, Jasmina Berbegal-Mirabent, and Adrian Guerrero. "Mission statements: what university research parks tell us about timing." Journal of Business Strategy 40, no. 5 (September 3, 2019): 46–53. http://dx.doi.org/10.1108/jbs-11-2018-0191.
Анотація:
Purpose Mission statements are a key element of any organization. Ideally, the mission statement should be written at the initial stages of an organization’s life to be a useful tool to guide future organization’s decisions and strategy. However, at the early stages of an organization’s life, the organization might still be under development with the objective and stakeholders not yet well-defined, and therefore, stating the mission so early on, might neglect some important elements. In this paper, the authors explore the difference in mission statement quality between missions that have been created at the birth stage of an organization versus missions that are just explicitly formulated once the organization is already well-established and an underlying implicit mission already exists. The authors use as an empirical setting university research parks. Design/methodology/approach The authors evaluate mission statement quality using content analysis. The authors then test the differences on mission statement quality between two groups of research parks, those that have followed a creation strategy versus those that have followed a formulation strategy, using mean of differences test. Findings The authors find that a formulation strategy produces more complete mission statements than the creation strategy. Research parks that have followed a formulation strategy include in their mission statements more references to relevant stakeholders, such as investors, than parks following a creation strategy with respect to their mission statement. Research limitations/implications The research setting is Spanish Science Parks. This research setting is appropriate to answer the research question, as two Park creation strategies, planned and unplanned, allow the researchers to clearly differentiate between two mission conception strategies. However, the sample size is rather small. Practical implications Research has shown that a well-defined mission helps organizations focus and strategy formulation. The authors’ research offers some guidance on how to achieve a high-quality mission statement which will, in turn, help organizations have a better definition of their purpose. Originality/value Research until now has assumed that the mission statement should be formulated at the initial stages of the organization’s life. The authors’ research shows that defining the mission statement later in the process creates higher-quality mission statements that better reflect the organizations purpose and relevant stakeholders.
7
Parker, Walter C. "“Advanced” Ideas about Democracy: Toward a Pluralist Conception of Citizen Education." Teachers College Record: The Voice of Scholarship in Education 98, no. 1 (September 1996): 104–25. http://dx.doi.org/10.1177/016146819609800101.
Анотація:
Citizenship education is probably the most popular stated mission for public schooling in the United States, but it rests on a feeble conception of democratic citizenship that skirts social and cultural diversity. The effect, oddly enough, is a citizenship education that is unclear about its relationship with multicultural education, and sometimes positioned defensively toward it. Here I outline a conception of democratic citizenship that is appropriate to pluralist societies—a conception on which a renewed, deepened citizenship education might proceed.
8
Brouant, Jean-Philippe. "Du logement à l’habitat : la conception de la mission des Offices." Cahiers du GRIDAUH N° 24, no. 1 (January 1, 2014): 43–49. http://dx.doi.org/10.3917/cdg.024.0043.
9
Tumino, G., S. Mancuso, J.-M. Gallego, S. Dussy, J.-P. Preaud, G. Di Vita, and P. Brunner. "The IXV experience, from the mission conception to the flight results." Acta Astronautica 124 (July 2016): 2–17. http://dx.doi.org/10.1016/j.actaastro.2016.02.014.
10
Dias, Nicole Gomes, Beltran Nadal Arribas, Paulo Gordo, Tiago Sousa, João Marinho, Rui Melicio, António Amorim, and Patrick Michel. "LIDAR altimeter conception for HERA spacecraft." Aircraft Engineering and Aerospace Technology 93, no. 6 (July 26, 2021): 1018–28. http://dx.doi.org/10.1108/aeat-12-2020-0300.
Анотація:
Purpose This paper aims to report the first iteration on the Light Detection and Ranging (LIDAR) Engineering Model altimeter named HELENA. HELENA is a Time of Flight (TOF) altimeter that provides time-tagged distances and velocity measurements. The LIDAR can be used for support near asteroid navigation and provides scientific information. The HELENA design comprises two types of technologies: a microchip laser and low noise sensor. The synergies between these two technologies enable developing a compact instrument for range measurements of up to 14 km. Thermal-mechanical and radiometric simulations of the HELENA telescope are reported in this paper. The design is subjected to vibrational, static and thermal conditions, and it was possible to conclude by the results that the telescope is compliant with the random vibration levels, the static load and the operating temperatures. Design/methodology/approach The Asteroid Impact & Deflection Assessment (AIDA) is a collaboration between the NASA DART mission and ESA Hera mission. The aim scope is to study the asteroid deflection through a kinetic collision. DART spacecraft will collide with Didymos-B, while ground stations monitor the orbit change. HERA spacecraft will study the post-impact scenario. The HERA spacecraft is composed by a main spacecraft and two small CubeSats. HERA will monitor the asteroid through cameras, radar, satellite-to-satellite doppler tracking, LIDAR, seismometry and gravimetry. Findings The HELENA design comprises two types of technologies: a microchip laser and low noise sensor. The synergies between these two technologies enable developing a compact instrument for range measurements of up to 14 km. Originality/value In this paper is reported the first iteration on the LIDAR Engineering Model altimeter named HELENA. HELENA is a TOF altimeter that provides time-tagged distances and velocity measurements. The LIDAR can be used for support near asteroid navigation and provides scientific information. The HELENA design comprises two types of technologies: a microchip laser and low noise sensor. The synergies between these two technologies enable developing a compact instrument for range measurements of up to 14 km.
Дисертації з теми "Conception de mission":
1
Jaafar, A. "Traitement de la mission et des variables environnementales et intégration au processus de conception systémique." Phd thesis, Institut National Polytechnique de Toulouse - INPT, 2011. http://tel.archives-ouvertes.fr/tel-00646708.
Анотація:
Ce travail présente une démarche méthodologique visant le " traitement de profils " de " mission " et plus généralement de " variables environnementales " (mission, gisement, conditions aux limites), démarche constituant la phase amont essentielle d‟un processus de conception systémique. La " classification " et la " synthèse " des profils relatifs aux variables d‟environnement du système constituent en effet une première étape inévitable permettant de garantir, dans une large mesure, la qualité du dispositif conçu et ce à condition de se baser sur des " indicateurs " pertinents au sens des critères et contraintes de conception. Cette approche s‟inscrit donc comme un outil d‟aide à la décision dans un contexte de conception systémique. Nous mettons en particulier l‟accent dans cette thèse sur l‟apport de notre approche dans le contexte de la conception par optimisation qui, nécessitant un grand nombre d‟itérations (évaluation de solutions de conception), exige l‟utilisation de " profils compacts " au niveau informationnel (temps, fréquence,...). Nous proposons dans une première phase d‟étude, une démarche de " classification " et de " segmentation " des profils basée sur des critères de partitionnement. Cette étape permet de guider le concepteur vers le choix du nombre de dispositifs à concevoir pour sectionner les produits créés dans une gamme. Dans une deuxième phase d‟étude, nous proposons un processus de " synthèse de profil compact ", représentatif des données relatives aux variables environnementales étudiées et dont les indicateurs de caractérisation correspondent aux caractéristiques de référence des données réelles. Ce signal de durée réduite est obtenu par la résolution d‟un problème inverse à l‟aide d‟un algorithme évolutionnaire en agrégeant des motifs élémentaires paramétrés (sinusoïde, segments, sinus cardinaux). Ce processus de " synthèse compacte " est appliqué ensuite sur des exemples de profils de missions ferroviaires puis sur des gisements éoliens (vitesse du vent) associés à la conception de chaînes éoliennes. Nous prouvons enfin que la démarche de synthèse de profil représentatif et compact accroît notablement l'efficacité de l‟optimisation en minimisant le coût de calcul facilitant dès lors une approche de conception par optimisation.
2
Jaafar, Amine. "Traitement de la mission et des variables environnementales et intégration au processus de conception systémique." Thesis, Toulouse, INPT, 2011. http://www.theses.fr/2011INPT0070/document.
Анотація:
Ce travail présente une démarche méthodologique visant le «traitement de profils» de «mission» et plus généralement de «variables environnementales» (mission, gisement, conditions aux limites), démarche constituant la phase amont essentielle d’un processus de conception systémique. La «classification» et la «synthèse» des profils relatifs aux variables d’environnement du système constituent en effet une première étape inévitable permettant de garantir, dans une large mesure, la qualité du dispositif conçu et ce à condition de se baser sur des «indicateurs» pertinents au sens des critères et contraintes de conception. Cette approche s’inscrit donc comme un outil d’aide à la décision dans un contexte de conception systémique. Nous mettons en particulier l’accent dans cette thèse sur l’apport de notre approche dans le contexte de la conception par optimisation qui, nécessitant un grand nombre d’itérations (évaluation de solutions de conception), exige l’utilisation de «profils compacts» au niveau informationnel (temps, fréquence,…). Nous proposons dans une première phase d’étude, une démarche de «classification» et de «segmentation» des profils basée sur des critères de partitionnement. Cette étape permet de guider le concepteur vers le choix du nombre de dispositifs à concevoir pour sectionner les produits créés dans une gamme. Dans une deuxième phase d’étude, nous proposons un processus de «synthèse de profil compact», représentatif des données relatives aux variables environnementales étudiées et dont les indicateurs de caractérisation correspondent aux caractéristiques de référence des données réelles. Ce signal de durée réduite est obtenu par la résolution d’un problème inverse à l’aide d’un algorithme évolutionnaire en agrégeant des motifs élémentaires paramétrés (sinusoïde, segments, sinus cardinaux). Ce processus de «synthèse compacte» est appliqué ensuite sur des exemples de profils de missions ferroviaires puis sur des gisements éoliens (vitesse du vent) associés à la conception de chaînes éoliennes. Nous prouvons enfin que la démarche de synthèse de profil représentatif et compact accroît notablement l’efficacité de l’optimisation en minimisant le coût de calcul facilitant dès lors une approche de conception par optimisationThis work presents a methodological approach aiming at analyzing and processing mission profiles and more generally environmental variables (e.g. solar or wind energy potential, temperature, boundary conditions) in the context of system design. This process constitutes a key issue in order to ensure system effectiveness with regards to design constraints and objectives. In this thesis, we pay a particular attention on the use of compact profiles for environmental variables in the frame of system level integrated optimal design, which requires a wide number of system simulations. In a first part, we propose a clustering approach based on partition criteria with the aim of analyzing mission profiles. This phase can help designers to identify different system configurations in compliance with the corresponding clusters: it may guide suppliers towards “market segmentation” not only fulfilling economic constraints but also technical design objectives. The second stage of the study proposes a synthesis process of a compact profile which represents the corresponding data of the studied environmental variable. This compact profile is generated by combining parameters and number of elementary patterns (segment, sine or cardinal sine) with regards to design indicators. These latter are established with respect to the main objectives and constraints associated to the designed system. All pattern parameters are obtained by solving the corresponding inverse problem with evolutionary algorithms. Finally, this synthesis process is applied to two different case studies. The first consists in the simplification of wind data issued from measurements in two geographic sites of Guadeloupe and Tunisia. The second case deals with the reduction of a set of railway mission profiles relative to a hybrid locomotive devoted to shunting and switching missions. It is shown from those examples that our approach leads to a wide reduction of the profiles associated with environmental variables which allows a significant decrease of the computational time in the context of an integrated optimal design process
3
Kang, Bo Young. "Heralds and community : an enquiry into Paul’s conception of mission and its indebtedness to the Jesus-tradition." Thesis, University of Bristol, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.573747.
Анотація:
This dissertation aims (a) to explore the shape and nature of Paul's conception of mission explaining his understanding of the church's mission in relation to his understanding of his own mission as an apostle, and (b) to show the influence of the Jesus-tradition on the apostle's conception. The thrust of the thesis is encapsulated in the title - Heralds and Community: An Enquiry into Paul's Conception of Mission and Its Indebtedness to the Jesus-Tradition. This reflects a conviction that constructing a plausible conceptuality of mission as understood by Paul and considering influential factors, particularly the Jesus-tradition, are essential for understanding Paul's ecclesial understanding and its relationship to his self-conception. The findings and positions taken in this study are as follows: I) Scholars have exaggerated the functional continuity between the apostle and the church in terms of evangelistic mission by using exegetically unsustainable arguments; in fact, Paul's letters are silent about proactive verbal evangelism by the church qua the church. 2) Paul's silence about congregational evangelism is due to his particular two-pronged (bifurcating) conception of mission, one prong being the event of eschatological heralds, the other prong being that of eschatological community. 3) In this conception of mission Paul maintains that God's inaugurated and ongoing salvation is to be implemented by proactive proclamation of the gospel by the heralds on the one hand, and by ontological/ethical actualization of the gospel by the community of the people of God on the other hand. 4) Jewish scriptures and traditions are formative for Paul's conception of mission, but Paul shows at various points his deep indebtedness to the Jesus-tradition, particularly to the context and contents of the synoptic mission discourse (for his concept of the heralds) and the sermon on the mount (for his concept of the community).
4
Trosseille, Clément. "Conception d’un interféromètre de Fabry Perot pour la mesure des vitesses radiales solaires sur la mission Solar Orbiter." Paris 11, 2008. http://www.theses.fr/2008PA112293.
Анотація:
Cette thèse a été consacrée à l'étude des caractéristiques requises de l'analyseur spectral de l'instrument PHI (Polarimetric and Helioseismic Imager) embarqué sur la mission Solar Orbiter de l'Agence Spatiale Européenne. Après une rapide revue de la théorie des oscillations solaires, des visées de l'héliosismologie, la discipline qui leur est consacrée et de ses principaux résultats, nous étudierons les critères définissant le dimensionnement de l'analyseur spectral de PHI, un interféromètre de Fabry Perot. Nous verrons comment les conditions particulières de la mission et ses exigences scientifiques contraignent les paramètres instrumentaux et les choix technologiques, et proposerons un concept de double analyseur vérifiant les spécifications imposées. Pour valider ce concept, nous avons travaillé sur un modèle de laboratoire, une cavité Fabry Perot accordable à cales piézoélectriques. Nous décrirons les expériences menées pour déterminer les caractéristiques de cet interféromètre, effectuer certaines calibrations et vérifier sous quelles conditions un modèle similaire pourrait être utilisé en vol. Nous verrons également comment nous avons cherché à utiliser cette cavité pour mesurer les oscillations solaires. Nos mesures, effectuées à Ténérife au printemps 2008, nous ont permis de vérifier les bonnes performances de l'instrument, malgré l'impossibilité d'obtenir un diagramme k-ω satisfaisant. Nous comparerons nos résultats à ceux issus de données du réseau GONG que nous prendrons comme référenceThis thesis was devoted to the study of the specifications of the spectral analyzer of the PHI instrument (Polarimetric and Helioseismic Imager) aboard the Solar Orbiter mission of the European Space Agency. We will review briefly the theory of solar oscillations and the birth, goals and results of helioseismology, the domain of astrophysics that studies them. Afterwards, we will have a look at the different criteria that define the main characteristics of PHI’s spectral analyzer, a Fabry Perot interferometer (FPI). We will see how the peculiar environmental conditions of the mission, together with the scientific objectives, constrain the instrumental parameters and the technological choices, and we will propose a concept of spectral analyzer based on two FPIs meeting the requirements. A proof of concept was studied in the lab, in the form of a piezoelectric tunable Fabry Perot cavity. We will describe the experiments performed in order to determine the characteristics of this interferometer, proceed to calibration measurements, and address the issue of in-flight usability. We have taken our FPI to a solar observatory in Tenerife in spring 2008 in order to measure solar oscillations. Performance was satisfactory, although we were not able to obtain a nice enough k-ω diagram. We compare our results with ones obtained with data of the GONG network that stand as a reference
5
Newman, Lascelles George. "Mission from the margin : a critical analysis of the participation of West Indians as agents of Christian mission in the western missionary enterprise in Africa in the nineteenth century, with special reference to their conception of Christian mission." Thesis, Oxford Centre for Mission Studies, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.732960.
6
Schmollgruber, Peter. "Enhancement of the conceptual aircraft design process through certification constraints management and full mission simulations." Thesis, Toulouse, ISAE, 2018. http://www.theses.fr/2018ESAE0036.
Анотація:
La conception d'un nouvel avion est initiée durant la phase avant-projet. Dans un premier temps, lesconcepteurs d’aéronefs identifient un ensemble de concepts potentiels pouvant répondre aux exigencesdu client en s’appuyant sur des informations fournies par les spécialistes disciplinaires et expertssystème. Ensuite, les solutions sont évaluées via un processus de dimensionnement basé sur uneanalyse multidisciplinaire. Dans le domaine des avions de transport civil, les objectifs ambitieux entermes de consommation de carburant amènent à étudier des configurations innovantes incluant denouvelles technologies. Cependant, peu de données sur de telles architectures sont disponibles dans lesphases amont de la conception. Ainsi, afin d'éviter une sélection ou élimination erronée d'unesolution, un objectif clé de la recherche en conception d'aéronefs est l’ajout de connaissances dansl'analyse multidisciplinaire.Aujourd’hui, cet objectif est atteint avec différentes approches: application d’optimisationsmultidisciplinaires, ajout de précision grâce aux analyses haute fidélité, introduction de nouvellesdisciplines ou systèmes et enfin, gestion de l'incertitude. Le rôle du concepteur est alors de combinerces options dans un processus de conception multidisciplinaire afin de converger vers le concept leplus performant tout en répondant aux contraintes de certification. Afin d’illustrer ce processus,l’optimisation d'un avion de transport avec assistance au sol pour le décollage qui a mis en évidencel'impact des contraintes de certification sur la conception du véhicule a été effectuée. La revuesuccessive des textes réglementaires et de recherches associées de la gestion du trafic aérien ont concluà la nécessité d’inclure des simulations au sein de l’analyse multidisciplinaire. Tenant compte de cesconclusions, la recherche effectuée dans le cadre de cette thèse propose alors d’ajouter desconnaissances en développant l’analyse et l’optimisation de la conception multidisciplinaire avec unnouveau module de contrainte de certification et des fonctionnalités de simulation complètes.Développé dans le cadre de la thèse, le module de contraintes de certification (CCM) a été utilisé pourrésoudre quatre problèmes d’optimisation associés à un avion de transport civil classique basé surl’outil de dimensionnement ONERA / ISAE-SUPAERO appelé FAST. Grâce à l'interface utilisateurdu CCM, un gain de temps au niveau de la mise en place de ces optimisations a constaté. De plus, lesrésultats ont confirmé la nécessité de définir au mieux et dès que possible les contraintes decertification.Pour atteindre des capacités de simulation complètes, l'analyse multidisciplinaire au sein de FAST aété améliorée. Premièrement, l'outil d'analyse aérodynamique a été modifié afin de générer la base dedonnées complète pour alimenter un modèle à 6 degrés de liberté. Ensuite, un nouveau module decalcul des propriétés d'inertie a été ajouté. Enfin, le simulateur open source JSBSim a été utilisé avecdifférentes lois de contrôle pour augmenter la stabilité et permettre la navigation automatisée. Lacomparaison entre les trajectoires de vol obtenues avec FAST et les données réelles sur les avionsenregistrées avec une antenne ADS-B a confirmé la validité de l'approcheThe design of a new aircraft is initiated at the conceptual design phase. In an initial step, aircraftdesigners, disciplinary and subsystems experts identify a set of potential concepts that could fulfill thecustomer requirements. To select the most promising candidates, aircraft designers carry out the sizingprocess through a Multidisciplinary Design Analysis. Nowadays, in the field of civil transport aircraft,environmental constraints set challenging goals in terms of fuel consumption for the next generationsof airplanes. With the “tube and wing” configuration offering low expectations on furtherimprovements, disruptive vehicle concepts including new technologies are investigated. However,little information on such architectures is available in the early phases of the design process. Thus, inorder to avoid mistakenly selecting or eliminating a wrong concept, a key objective in Aircraft Designresearch is to add knowledge in the Multidisciplinary Design Analysis.Nowadays, this objective is achieved with different approaches: implementation of MultidisciplinaryDesign Optimization, addition of accuracy through high fidelity analyses, introduction of newdisciplines or systems and uncertainty management. The role of the aircraft designer is then tocombine these options in a multidisciplinary design process to converge to the most promising conceptmeeting certification constraints. To illustrate this process, the optimization of a transport aircraftfeaturing ground based assistance has been performed. Using monolithic optimization architecture andadvanced structural models for the wing and fuselage, this study emphasized the impact ofcertification constraints on final results. Further review of the regulatory texts concluded that aircraftsimulation capabilities are needed to assess some requirements. The same need has been identified inthe field of Air Traffic Management that provides constraints for aircraft operations. This researchproposes then to add knowledge through an expansion of the Multidisciplinary Design Analysis andOptimization with a new Certification Constraint Module and full simulation capabilities.Following the development of the Certification Constraint Module (CCM), its capabilities have beenused to perform four optimization problems associated to a conventional civil transport aircraft basedon the ONERA / ISAE-SUPAERO sizing tool called FAST. Facilitated by the Graphical UserInterface of the CCM, the setup time of these optimizations has been reduced and the results clearlyconfirmed the necessity to consider certification constraints very early in the design process in order toselect the most promising concepts.To achieve full simulation capabilities, the multidisciplinary analysis within FAST had to beenhanced. First, the aerodynamics analysis tool has been modified so that necessary coefficients for a6 Degrees-of-Freedom model could be generated. Second, a new module computing inertia propertieshas been added. Last, the open source simulator JSBSim has been used including different controllaws for stability augmentation and automated navigation. The comparison between flight trajectoriesobtained with FAST and real aircraft data recorded with ADS-B antenna confirmed the validity of theapproach
7
Ounis, Houdhayfa. "Conception intégrée par optimisation multicritère multi-niveaux d'un système d'actionnement haute vitesse pour l'avion plus électrique." Phd thesis, Toulouse, INPT, 2016. http://oatao.univ-toulouse.fr/18400/1/OUNIS_Houdhayfa.pdf.
Анотація:
Les avantages que présentent les systèmes électriques par rapport aux autres systèmes (mécaniques, hydrauliques et pneumatiques) ont permis d’intensifier l’électrification des systèmes embarqués à bord des aéronefs : c’est le concept d’avion plus électrique. Dans ce contexte, l’approche de conception intégrée par optimisation (CIO) de ces systèmes s’avère aujourd’hui une nécessité pour pouvoir répondre aux exigences en termes d’efficacité énergique, de fiabilité et de masse... Dans cette thèse, nous avons appliqué la CIO à une chaine de conversion électromécanique utilisée dans le système de conditionnement d’air d’un avion. Deux objectifs sont ciblés : la minimisation de la masse du système et l’augmentation de son efficacité énergétique. Ces objectifs sont intégrés à diverses contraintes hétérogènes, allant de la qualité réseau au respect de la mission de vol dans le plan couple – vitesse, en passant par la thermique,… Compte tenu de la complexité du système étudié et de son caractère multidisciplinaire, des approches de conception par optimisation dites « MDO » (pour Multidisciplinary Design Optimization) sont étudiées. En effet, au delà des compétences physiques et techniques, la conception intégrée par optimisation des systèmes complexes nécessite des efforts supplémentaires en termes de méthodologies de conception. Nous avons présenté dans cette thèse trois approches : Approches mono-niveau : séquentielle et globale ; Approche multi-niveaux, couplant niveaux système et niveau constituants (filtre, onduleur, machine) ; des formulations adaptées à notre problème de conception sont présentées afin de résoudre les problèmes liés aux optimisations mono-niveau. Les performances des différentes approches de conception sont présentées analysées et comparées. Les résultats obtenus montrent clairement les avantages que présente la formulation multi-niveaux par rapport aux approches classiques de conception.
8
Levillain, Kevin. "Les entreprises à mission : Formes, modèle et implications d’un engagement collectif." Thesis, Paris, ENMP, 2015. http://www.theses.fr/2015ENMP0010/document.
Анотація:
Depuis plusieurs années, on observe une vague d'adoption de nouveaux statuts de société dans le droit commercial de plusieurs Etats. En stipulant dans leurs statuts leurs finalités, ces sociétés réinterrogent les buts de l'entreprise et apparaissent comme un paradoxe pour la littérature sur la gouvernance : un tel engagement n'est-il pas de nature à restreindre la flexibilité stratégique et à nuire au contrôle de l'action des dirigeants ? Ne risque-t-il pas de dissuader les associés ? L'objet de cette thèse est d'expliquer le phénomène des « entreprises à missions », leurs motivations, mais aussi de caractériser le modèle de gouvernance alternatif qu'elles dessinent et sa portée en sciences de gestion.L'analyse du processus de conception des premières formes de société à mission américaines vient, en premier lieu, enrichir le modèle du contrat de société, en montrant que celui-ci peut avoir des effets restrictifs sur les finalités du collectif s'il ne contient que des engagements sur les ressources investies, ou une répartition des droits et des intérêts des parties prenantes.La thèse propose, en second lieu, une modélisation de la mission : en spécifiant des propriétés désirables, mais potentiellement inédites, de l'action collective, la mission appelle la conception de nouvelles stratégies pour construire des intérêts collectifs et des biens communs nouveaux. Ce modèle rend visible, au-delà des nouvelles formes de société, une classe plus large d'organisations « à missions » dont on retrouve de nombreuses déclinaisons, dans l'histoire et actuellement.Enfin, la thèse examine les outils de gouvernance des entreprises à mission. L'étude d'une série de cas contrastés montre des dispositifs originaux articulant contrôle de l'exploration stratégique et mécanismes de solidarité. La mission ouvre ainsi des perspectives fécondes sur les régimes possibles de la solidaritéIn recent years, several states have introduced new corporate forms into their commercial law, which requires the commitment of shareholders towards a “mission”. By stipulating their purposes in their documents, these companies appear as a paradox for literature on corporate governance: would such a commitment not hamper strategic flexibility and undermine the monitoring of management? Is it not likely to deter shareholders' investments? The aim of this thesis is to explain the emergence of "mission-driven companies", to understand their motivations, but also to characterize the alternative model of governance they draw and the significance of this model in management science.First, the analysis of the process of emergence and design of these mission-driven forms in the United States enables us to enrich the classical model of the corporate contract, by showing that such a contract can have restrictive effects on the collective purposes if it only contains a commitment on invested resources, or provisions on the distribution of decision rights or value created to stakeholders.The thesis proposes, in a second step, a model of the "mission": by specifying desirable, yet potentially inventive, properties of the upcoming collective action, the mission calls for the design of novel strategies aiming at building new commons and collective interests. This model reveals, beyond the new legal forms, a wider class of “mission-driven” organizations, of which we can observe numerous variations both historically and currently.Finally, the thesis examines the systems of governance of mission-driven companies. A study of contrasting cases shows original devices combining control of the strategic exploration and solidarity mechanisms. The mission thus opens fruitful perspectives to explore new possible systems of solidarity
9
Ferreira, silva Eduardo. "Conception d’architecture de système-de-systèmes à logiciel prépondérant dirigée par les missions." Thesis, Lorient, 2018. http://www.theses.fr/2018LORIS509/document.
Анотація:
La formulation des missions est le point de départ du développement de systèmes-de- systèmes, étant utilisée comme base pour la spécification, la vérification et la validation d’architectures de systèmes-de-systèmes. Élaborer des modèles d’architecture pour systèmes-de-systèmes est une activité complexe, cette complexité reposant spécialement sur les comportements émergents, c'est-à-dire, des comportements issus des interactions entre les parties constituantes d’un système-de-systèmes qui ne peuvent pas être prédits même si on connaît tous les comportements de tous les systèmes constituants. Cette thèse adresse le lien synergique entre mission et architecture dans le cadre des systèmes-de-systèmes à logiciel prépondérant, en accordant une attention particulière aux comportements émergents créés pour réaliser les missions formulées. Nous proposons ainsi une approche pour la conception d’architecture de systèmes-de-systèmes dirigée par le modèle de mission. Dans notre approche, le modèle de mission sert à dériver et à valider les architectures de systèmes-de-systèmes. Dans un premier temps, nous générons la structure de l’architecture à l’aide de transformations de modèles. Ensuite, lors que l’architecte spécifie les aspects comportementaux, la description de l’architecture résultante est validée à l’aide d’une démarche conjointe qui comprend à la fois la vérification des propriétés spécifiées et la validation par simulation des comportements émergents. La formalisation en termes de logique temporelle et la vérification statistique de modèles sont les fondements formels de l’approche. Un outil mettant en œuvre l’ensemble de l’approche a été également développé et expérimentéThe formulation of missions is the starting point to the development of Systems-of-Systems (SoS), being used as a basis for the specification, verification and validation of SoS architectures. Specifying, verifying and validating architectural models for SoS are complex tasks compared to usual systems, the inner complexity of SoS relying specially on emergent behaviors, i.e. features that emerge from the interactions among constituent parts of the SoS which cannot be predicted even if all the behaviors of all parts are completely known. This thesis addresses the synergetic relationship between missions and architectures of software-intensive SoS, giving a special attention to emergent behaviors which are created for achieving formulated missions. We propose a design approach for the architectural modeling of SoS driven by the mission models. In our proposal, the mission model is used to both derive, verify and validate SoS architectures. As first step, we define a formalized mission model, then we generate the structure of the SoS architecture by applying model transformations. Later, when the architect specifies the behavioral aspects of the SoS, we generate concrete SoS architectures that will be verified and validated using simulation-based approaches, in particular regarding emergent behaviors. The verification uses statistical model checking to verify whether specified properties are satisfied, within a degree of confidence. The formalization in terms of a temporal logic and statistical model checking are the formal foundations of the developed approach. A toolset that implements the whole approach was also developed and experimented
10
Kwok, Hon Lee. "Use of Isaiah in the Pauline letters : with special reference to his self-conception of being an Apostle to the Gentiles." Thesis, University of Edinburgh, 2009. http://hdl.handle.net/1842/4154.
Анотація:
Many may have noticed that Paul employs large number of passages from the book of Isaiah in his various Epistles. Some of those Isaianic texts are used as explicit citations whilst others are used in a more nuanced manner such as allusions and intertextual echoes. Yet, in spite of the importance of Isaiah in Paul’s letters and the centrality of Paul’s vocation as an apostle to the Gentiles in Paul’s life, no specialized study of the relationship between these two significant aspects has appeared to date. More specifically, amongst those who notice the significance of Isaiah in Paul’s Epistles, it has been widely held that Paul identifies himself with the Isaianic Servant in the way that he sees himself as the fulfilment of the Isaianic Servant. The present study seeks to explore how Paul reads Isaiah as reflected in Galatians, Romans, and 1 and 2 Corinthians, four of his undisputed authentic letters, where explicit citations and clear allusions are detected. It is not so much a study of the mechanics of citation or allusion per se as of seeing Paul as a reader and interpreter of the scriptural text. Special attention is paid to the interplay of Paul’s reading of the Isaianic texts, the role of the servant figure portrayed in Isaiah 40-66, and his understanding of Jesus as well as his own Gentile mission in the light of Isaiah. Based on a slightly modified model set out by Richard Hays, the study proceeds by looking at some of the major instances of Paul’s using of Isaianic texts within the larger literary contexts, both in Isaiah and in the flow of Paul’s argument. The goal of the study is fourfold: First, to see whether Paul’s use of these ancient texts is ‘atomistic’, taken the text out of context and applied it to his argument to serve his own purpose or given consideration of the wider context of the original text. Second, to explore how Paul reads Isaiah in the light of his special called ministry as an apostle to the Gentiles, and how the reading of the scriptural text provides him insights to God’s ongoing salvific work in the history of Israel and the person of Jesus. Third, to clarify Paul’s sense of identification with the Isaianic servant figure in relation to the ministry of Jesus and his own mission; and finally, how Paul views the Gentile mission in which he is involved in relation to the final salvation of Israel and humanity. Particular attention has been paid to Paul’s identification of the Isaianic Servant. It has been argued that he sees Jesus as the eschatological fulfilment of the Isaianic Servant. Jesus’ death and resurrection established the foundation of hope and provided a paradigm for his apostolic existence. He sees himself as the Isaianic servant in the sense that he lives a life in total identification with that of Christ, who, though experiences suffering and death, will be vindicated eventually by God.
Книги з теми "Conception de mission":
1
ʼEʺ, Joʻ Maṅʻʺ, ed. An account of the Catholic mission of Southern Burma and of the cathedral of the immaculate conception, Rangoon. [Ranʻ kunʻ: s.n., 2009.
2
ʼEʺ, Joʻ Maṅʻʺ, ed. An account of the Catholic mission of Southern Burma and of the cathedral of the immaculate conception, Rangoon. [Ranʻ kunʻ: s.n., 2009.
3
Gauthier, Chantal. Femmes sans frontières: L'histoire des Soeurs missionnaires de l'Immaculée-Conception, 1902-2007. Outremont: Carte blanche, 2008.
4
Gravier, Jacques. Relation de ce qui s'est passé dans la Mission de l'Immaculée Conception au pays des Ilinois [sic]: Depuis le mois de mars 1693, jusqu'en février 1694. [Manate, New York?: s.n.], 1985.
5
Centre national d'études spatiales (France), ed. Missions, technologies et conception des véhicules mobiles planétaires =: Missions, technologies, and design of planetary mobile vehicles. Toulouse, France: Cépaduès, 1993.
6
Sondo, Rose-Marie. Monseigneur Joanny Thévenoud: Pére fondateur des Sœurs de l'Immaculée Conception de Ouagadougou. Ouagadougou, Burkina Faso: Societe generale d'impr. du Faso (SOGIF), 1998.
7
Hernández, Angel Santos. Teología sistemática de la misión: Progresiva evolución del concepto de misión. Estella: Editorial Verbo Divino, 1991.
8
Barrette, Georgette. Délia Tétreault et l'Église canadienne. Montréal: Soeurs missionnaires de l'Immaculée-Conception, Maison généralice, 1987.
9
Cecchi, Roberta. Artlantis R & studio: The missing book. Milan, Italy: Edizioni FAG Milano, 2007.
10
Marina, Alejandro Luis. Misión, una nueva mirada para nuevos tiempos: Estudio del campo semántico del concepto de misión. Cochabamba: Instituto Latinoamericano de Misionología, 2008.
Частини книг з теми "Conception de mission":
1
Paisant, Chantal. "Le premier envoi des sœurs de l’Immaculée Conception de Castres (1847)." In La mission au féminin, 69–78. Turnhout: Brepols Publishers, 2009. http://dx.doi.org/10.1484/m.atdm-eb.4.00040.
2
Randriamaro, Zo. "4. African women challenging neo-liberal economic orthodoxy: the conception and mission of the GERA programme." In Women Reinventing Globalisation, 44–51. Oxford, United Kingdom: Oxfam Publishing, 2003. http://dx.doi.org/10.3362/9780855988814.004.
3
Stornig, Katharina. "Cultural Conceptions of Purity and Pollution." In European Missions in Contact Zones, 107–24. Göttingen: Vandenhoeck & Ruprecht, 2015. http://dx.doi.org/10.13109/9783666101410.107.
4
Becker, Judith. "Conceptions of Humanity in Nineteenth-Century German Protestant Missions." In Humanity, 107–30. Göttingen: Vandenhoeck & Ruprecht, 2016. http://dx.doi.org/10.13109/9783666101458.107.
5
Thompson, Paul, Mike Jones, and Chris Warhurst. "From Conception to Consumption: Creativity and the Missing Managerial Link." In Creative Labour, 51–71. London: Macmillan Education UK, 2009. http://dx.doi.org/10.1007/978-1-137-12173-8_3.
6
Bance, Philippe, Jean-Philippe Milesy, and Christelle Zagbayou. "The development in France of partnerships between public and social economy organizations and the new paradigm of public action." In Providing public goods and commons, 163–83. Liège: CIRIEC, 2018. http://dx.doi.org/10.25518/ciriec.css1chap8.
Анотація:
The chapter explains why and how the institutional and social transformations that have taken place in France during the last decades with the advent of the new public management are at the origin of new forms of cooperation between social economy organisations provided in the past by public organisations or private companies providing public services and in charge of the missions entrusted to them. Today, public and social economy partnerships are encouraged by public enterprises, public non-market organisations or public authorities, which see it as a means to extend public service delivery in a context of reducing financial resources. These transformations have the advantage of the cooperation of different organisations to maintain or increase public service provisions for the benefit of citizens. However, the future of this emerging model raises three main interrogations: the capacity of social economy organisations to retain their own identity by becoming largely providers of public organisations or authorities; the resilience of the fundamentally centralist conception which permeates the French model and limits the scope of these new partnerships; and last the banalization of social economy organisations as a result of the deployment of new public management and the neoliberal conception that limit the ability to co-construct the general interest with the different partners.
7
Christensen Hughes, Julia. "Academic Integrity Across Time and Place: Higher Education’s Questionable Moral Calling." In Academic Integrity in Canada, 25–59. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-83255-1_2.
Анотація:
AbstractIn this chapter, I call on Canada’s higher education institutions to embrace Veritas (truth), in every aspect of the academy. Academic integrity must transcend discussions of student misconduct and apply to all that we are—our history, our research, our curriculum, our pedagogy, our purpose. Tracing Western higher education’s development from medieval times in Europe, through to the US and Canada, I make the case that the academy has paradoxically been both a dominating and liberating force since its inception. While imposing Western conceptions of morality and truth that have shifted over time, and supporting the imperialist ambitions of Church, monarchy and state, higher education has also elevated its graduates to positions of influence within society and advanced national aims. Despite credos of truth telling and missions of character development, higher education’s moral calling has been—and remains—highly questionable. Given the complex challenges the world is facing today, and the need for Canadian institutions of higher learning to confront their colonial roots, it is time for us to critically examine this history and explicitly (re)position integrity at the core of Canada’s higher education institutions.
8
Ruhnau, Eva. "What Is Missing? — The Fundamental Role of Time in C.F. von Weizsäcker’s Conception of Physics and Some Insights from Modern Neuroscience." In Time, Quantum and Information, 203–17. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-662-10557-3_13.
9
Zhang, Jianjun, and Jing Li. "Conception of spacecraft autonomous mission management system." In High-Reliability Autonomous Management Systems for Spacecraft, 149–62. Elsevier, 2023. http://dx.doi.org/10.1016/b978-0-443-13283-4.00003-2.
10
O'Driscoll, Cian. "Mission Accomplished." In Victory, 108–25. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198832911.003.0006.
Анотація:
The penultimate problem that just war theorists find with victory pertains to the contingencies of modern warfare. Insofar as today’s wars are configured in such a way that they are fundamentally ‘unwinnable’, it would be anachronistic to address them in the idiom of victory. This chapter assesses this contention. It confirms that, to the degree that victory is understood through the prism of so-called ‘decisive battles’, which is the standard way it has historically been conceived, there is a sound historical basis for declaiming victory as an obsolete concept. While this is true, it is not, however, the entire story. It overlooks the moral weight that this idealized vision of victory carries today, and indeed has always carried. Reflecting on this insight, this chapter concludes that what the examination of the relevance of victory to modern war reveals is the dated conception of war that underpins just war thinking.
Тези доповідей конференцій з теми "Conception de mission":
1
Gaudin-Delrieu, Catherine, Jean-Philippe Fayret, Jean-Luc Lamard, Christophe Devilliers, and Vincent Costes. "Conception d’instrument pour une mission d’observation haute resolution et grand champ." In International Conference on Space Optics 2000, edited by Georges Otrio. SPIE, 2017. http://dx.doi.org/10.1117/12.2307905.
2
Cioffarelli, Emiliano, and Enrico Sciubba. "A New Type of Gas Turbine Based-Hybrid Propulsion System: Part 1—Concept Development, Definition of Mission Parameters and Preliminary Sizing." In ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-1359.
Анотація:
Abstract A hybrid propulsion system of new conception for medium-size passenger cars is described and its preliminary design developed. The system consists of a turbogas set operating at fixed rpm, and a battery-operated electric motor that constitutes the actual “propulsor”. The battery pack is charged by the thermal engine which works in an electronically controlled on/off mode. Though the idea is not entirely new (there are some concept cars with similar characteristics), the present study has important new aspects, in that it bases the sizing of the thermal engine on the foreseen “worst case” vehicle mission (derived from available data on mileage and consumption derived from road tests and standard EEC driving mission cycles) that they can in fact be accomplished, and then proceeds to develop a control strategy that enables the vehicle to perform at its near–peak efficiency over a wide range of possible missions. To increase the driveability of the car, a variable-inlet vane system is provided for the gas turbine. After developing the mission concept, and showing via a thorough set of energy balances (integrated over various mission profiles), a preliminary sizing of the turbogas set is performed. The results of this first part of the development program show that the concept is indeed feasible, and that it has important advantages over both more traditional (Hybrid Vehicles powered by an Internal Combustion Engine) and novel (All-Electric Vehicle) propulsion systems.
3
Méndez G., Javier E., Albert M. K. Cheng, and Santiago Muñoz. "FACSAT: Conception as a cyber-physical system for satellite observation of the Earth: Automated mission planning and scheduling." In ICCPS '23: ACM/IEEE 14th International Conference on Cyber-Physical Systems (with CPS-IoT Week 2023). New York, NY, USA: ACM, 2023. http://dx.doi.org/10.1145/3576841.3589616.
4
Knight, Tristan, Axel Rousse, Clémence Allietta, and Benjamin Bérat. "TOLOSAT project: Gravimetry and communication." In Symposium on Space Educational Activities (SSAE). Universitat Politècnica de Catalunya, 2022. http://dx.doi.org/10.5821/conference-9788419184405.009.
Анотація:
The use of Constellations for weather science, security and disaster monitoring is a major challenge for space application services. Satellite to satellite communication using existing constellations has not been extensively explored yet. It can improve the communication times for small-satellite missions which have limited access to ground stations. Thus, a mission to demonstrate the feasibility of this link is required. Another element of interest in space application is Earth Observation, especially in the context of Climate Change. Gravimetry allows an understanding of mass transport in the Earth System through the remote sensing of the time variation of the Earth gravity field. CubeSats are low-cost small-scale and hence lower risk solutions to Earth Observation missions. University CubeSats have shown their success in demonstration and scientific missions, and have a great potential in providing students with practice and application on real space systems. In this context, the student associations ASTRE and SUPAERO CubeSat Club have joined in a CubeSat program called TOLOSAT, with the hope of demonstrating such technologies. Gathering 70 students from Toulouse, the team was split into subsystems in accordance with the concurrent engineering principles. The work performed followed recommendations from experts from the French National Centre for Space Studies (CNES) and the industry. The TOLOSAT payloads have to test and demonstrate new means of measuring gravity and addressing communication issues. Firstly, for the gravimetry mission, our approach relies solely on GNSS to compute the gravity field, avoiding expensive gravimeters. For the communication mission: the Iridium constellation will be used as an intermediate between the CubeSat and the ground station. Off-the-shelf components such as patch antennas are planned to prove their efficiency in orbit. This would improve the coverage and the communication window. The preliminary design was completed. TOLOSAT was designed as a 3-unit nanosatellite, on a 97.4° inclined, 500km high orbit. Margins were also ensured to allow a third payload to be defined in the future, that will be used for finance and partnerships. Detailed designs are still required, but the educational purposes have been fulfilled, in terms of discovery of the development of space missions as well as in the teamwork culture. The team is now moving on to a new phase, dedicated to a more detailed conception with an on-going focus on the introduction to students to technical - but not only - fields of knowledge applied to space systems
5
Casu, Davide, Anthea Comellini, Vincent Dubanchet, Hervé Renault, Lorenzo Bitetti, and Pierre Dandré. "Safety in GNC systems design for In-Orbit Servicing during Rendezvous and close proximity operations." In ESA 12th International Conference on Guidance Navigation and Control and 9th International Conference on Astrodynamics Tools and Techniques. ESA, 2023. http://dx.doi.org/10.5270/esa-gnc-icatt-2023-035.
Анотація:
Although interest is rising in the execution of rendezvous, proximity, and capture operations for on- orbit services, the definition of accepted technical and safety standards for in-orbit servicing (IOS) to carry out in a safe and responsible manner these operations is still an on-going process. The need for safety standardization has been identified by major agencies. Stakeholders, organizations (e.g., CONFERS), and working groups such as the ESA-led Close Proximity Operations working group are working in this direction, to derive guidelines for safe close proximity operations. In all cases the economic context of these projects is challenging, and design rules and verification methods inherited from crewed rendezvous mission are probably over constraining. On the other hand, either from space debris mitigation point of view or a commercial service point a view, an adequate level of safety shall be implemented and demonstrated. Availability of adequate design and verification tool is thus considered essential to support in an exhaustive and cost effective way theses verifications. The final aim is to perform IOS missions in a safe and sustainable way. The current paper focuses on the impact of best practices and guidelines for safe close proximity operations on the conception, the design, and the validation and verification (V&V) of the GNC system. The GNC system is a high critical system for this kind of missions making use of autonomous guidance and navigation capabilities, coordinated control of robotic arm and Servicer’s platform, overall FDIR strategies and autonomous Collision Avoidance Maneuvers (CAM). The process of ensuring Safety with a low probability of collision is far to be taken for granted for these very complex missions. This paper will firstly address the majors problems and criticalities for In-Orbit Servicing missions, the major design drivers for the GNC system, key common IOS missions requirements and constrains. Secondly, the overall GNC workflow from design and development to validation and verification principles to ensure a safe but cost-effective IOS GNC product will be presented. GNC analyses, methodologies and tools proposed to be used along this workflow will be detailed. For example, early preliminary Safety and FDIR analyses on the design of GNC system are of paramount importance in order to avoid major architecture deviation changes in later phases. Also the entire Mission Analysis and Concept Of Operations of the Rendezvous strategy approach must take into account Safety from concept design (e.g., ensuring passive safety through safe orbits design approaches). The sharing of operational tasks between Ground commands and monitoring & autonomous on-board actions has to be thought thoroughly from early project phases. Different kind of analyses from Linear Covariance analyses to Monte Carlo Analyses applied to increasingly accurate models of environment and spacecraft have been used in different phases of the design and development of the GNC system. These tools are useful to verify that the derived concept of operations and mission analysis strategy for the rendezvous approach are consistent and the trajectory dispersion are within acceptable limits (e.g. there is no occurrence of involuntarily crossing of predefined zones such as the Approach Ellipsoid or the Keep-Out-Sphere). The analysis of specific sets of worst case scenarios for the nominal cases is not sufficient alone, but has to be complemented with a thorough analysis of contingency cases (e.g. recovery after navigation chain loss, thruster failure, collision avoidance from anomalous initial conditions). Contingency analyses shall cover for different situations contemplating FDIR detection & recovery, addressing all phases of the mission from phasing and long range navigation to capture, servicing operations, disposal, but also recovery from emergency collision avoidance maneuvers. Advanced phases of the IOS project make extensive use of several GNC tools from Robust control synthesis, frequency analyses, scattering and worst case analyses to extensive performance, robustness and sensitivity campaign with the Functional Engineering Simulator (FES) developed in auto-coding framework to facilitate also early porting and testing in space hardware and robotic test bench HIL tests. Moreover, the validation of the GNC complex functions for IOS (such as the autonomous navigation relying on optical sensors, computer vision, and image processing algorithms) requires a dedicated workflow from open to closed loop simulations in Model-In-the-Loop (MIL), Software-In-the-Loop (SIL) (using different rendering tools such as PANGU or SpiCam), Processor-In-the-Loop (PIL), and Hardware-In-the-Loop (HIL) (relying on robotic test benches) test campaigns. The final aim of this paper is to allow for a better understanding of the criticalities of IOS mission, and how the GNC design shall comply with safety requirements and address safety guidelines. It will be shown how main critical requirements are verified through the workflow of the GNC system from early conception to validation and verification.
6
Gens, Frédéric, and Ludivine Comeliau. "“La Belle Liégeoise”, the new footbridge in Liège." In IABSE Congress, Ghent 2021: Structural Engineering for Future Societal Needs. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2021. http://dx.doi.org/10.2749/ghent.2021.0741.
Анотація:
<p>The newest footbridge in Liège, known as "La Belle Liégeoise", was opened on 2nd May 2016. Located upstream of the landscape window created by Guillemins esplanade, this bridge provides a connection for soft transport modes from the railway station across the Meuse to La Boverie park, maintaining clearance for navigation.</p><p>The main span over the Meuse is 163 metres for a total length of 294 metres. The 5.5 metre wide decking is positioned laterally to the supporting structure.</p><p>Bureau Greisch, in association with the landscape architect Corajoud, was responsible for the complete design mission for the bridge.</p><p>The aim of this article is to detail the whole process of the conception of the bridge, from first sketches to erection control.</p>
7
Gens, Frédéric, and Ludivine Comeliau. "“La Belle Liégeoise”, the new footbridge in Liège." In IABSE Congress, Ghent 2021: Structural Engineering for Future Societal Needs. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2021. http://dx.doi.org/10.2749/ghent.2021.0741.
Анотація:
<p>The newest footbridge in Liège, known as "La Belle Liégeoise", was opened on 2nd May 2016. Located upstream of the landscape window created by Guillemins esplanade, this bridge provides a connection for soft transport modes from the railway station across the Meuse to La Boverie park, maintaining clearance for navigation.</p><p>The main span over the Meuse is 163 metres for a total length of 294 metres. The 5.5 metre wide decking is positioned laterally to the supporting structure.</p><p>Bureau Greisch, in association with the landscape architect Corajoud, was responsible for the complete design mission for the bridge.</p><p>The aim of this article is to detail the whole process of the conception of the bridge, from first sketches to erection control.</p>
8
Xiaoping, Wu. "PROBLEMS, TASKS AND COUNTERMEASURES FOR TEACHING SECONDARY WRITING BASED ON CHINESE PROFICIENCY GRADING STANDARDS — FROM THE PERSPECTIVE OF MEMETI." In Chinese Studies in the 21st Century. Buryat State University Publishing Department, 2022. http://dx.doi.org/10.18101/978-5-9793-1802-8-2022-52-59.
Анотація:
Writing is a personalized creative activity. From the perspective of memetics, the collection-conception-expression process in writing behavior is consistent with the as-similation-memory-expression-dissemination process of memes. Compared with the ele-mentary level, the language ability index points of the intermediate level have a large span. Due to the limitation of the Chinese level, the learners cannot realize the equivalence between personal cognitive information and Chinese expression. The lack of willingness of Chinese learners to write in Chinese is the main problem faced by the intermediate writ-ing teaching. Based on the description of medium writing ability in the Chinese proficien-cy level standard, writing teaching helps students build cognitive memes and language memes. In the middle stage, language memes are mainly applied stylistic training to im-prove the accuracy of word expression and the integrity of content Sex is the core mission. In teaching, countermeasures such as strengthening the cultivation of students' cognitive ability, strengthening the cognitive connection between Chinese and students' mother tongue, and improving the accuracy of students' Chinese expression can be adopted.
9
Socoloski, Paul, Michael Maier, and Michael Lamberto. "Life-Cycle Engineering Support From the US Navy Gas Turbine Ship Complex." In ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/96-gt-496.
Анотація:
The United States Navy has tested propulsion plants since the beginning of the century. There is a long record of successful test programs which have either proven new systems for introduction to the fleet or demonstrated the inability of new systems to meet the requirements of the fleet. Traditionally these test programs concluded with the introduction of the propulsion system into service. With the conception of the Gas Turbine Ship Complex in the mid 1980s, the Navy recognized the need to maintain a facility for conducting life cycle engineering activities to support the more complex gas turbine plants and control systems in the fleet. The Gas Turbine Ship Complex successfully tested the DDG-51 Class propulsion plant before the introduction of the Arleigh Burke and now continues to provide testing of gas turbine plant upgrades, allows training for DDG-51 Class precommissioning crews, enables In-Service Engineers to conduct plant operations to resolve emergent fleet problems and conducts Research and Development on new and upgraded systems. This paper recounts the premiss for developing the Gas Turbine Ship Complex and shows how the plant has gone beyond traditional propulsion plant test programs to fulfill its mission as a facility for life cycle support of gas turbine ships.
10
Frezza, Lorenzo, Paolo Marzioli, Andrea Gianfermo, Niccolo Picci, Emanuele Bedetti, Federico Curiano, Diego Amadio, Fabio Santoni, and Fabrizio Piergentili. "Lessons learned during the development of LEDSAT from the students of the S5Lab." In Symposium on Space Educational Activities (SSAE). Universitat Politècnica de Catalunya, 2022. http://dx.doi.org/10.5821/conference-9788419184405.073.
Анотація:
The LEDSAT 1U Cubesat, a satellite roughly 10x10x11cm, was developed between late 2016 and 2021 by students of Sapienza University of Rome. The project was conceived with the help of the University of Michigan and started being developed by space engineering master students of Sapienza in a class context. The team of the S5Lab (Sapienza Space System and Space Surveillance Laboratory) continued the project and applied for the Fly Your Satellite! Programme of ESA Education, which has followed the development of the CubeSat, providing important expert support and periodic reviews. The approach brought to the students an invaluable educational experience as they participated actively in the development of a spacecraft with the typical milestones of satellite projects. The mission objectives of LEDSAT include the use of onboard LEDs for improved orbit determination, experimental attitude determination and backup light communication. Each of the six sides of the CubeSat houses an LED board of a different color (red, green, and blue) with opposite sides with paired color. The LEDs can flash a pattern predefined by radio telecommand and the light is observed using ground telescopes. The design of the spacecraft started in late 2016 and was presented at the selection workshop of the Fly Your Satellite! Programme in May 2017. Final assembly took place in mid-2020 after which the team performed functional and environmental testing between October and December 2020, with the objective of ensuring the survivability of the spacecraft in the space environment and characterization of its behavior. After successful testing, the spacecraft was integrated inside the deployer in July 2021 in Brno, Czech Republic and was launched from Kourou, French Guiana on August 17th, 2021, aboard the Vega VV19 launcher. The spacecraft is now in orbit and operating nominally, with the LED flashes having been observed several times. The development of the spacecraft was not without difficulty, with preventable issues arising through testing that imposed design changes and further analysis - the paper will walk through the project since its conception, throughout the development, the functional and environmental testing of the payload and at system level, emphasizing the lessons learned by the students.
Звіти організацій з теми "Conception de mission":
1
Mehrotra, Santosh. Monitoring India’s National Sanitation Campaign (2014–2020). Institute of Development Studies (IDS), June 2021. http://dx.doi.org/10.19088/slh.2021.011.
Анотація:
In 2011, India had more phone users (around 54 per cent of households) and television access (33 per cent) in rural areas than people with access to tap water (31 per cent) and toilet facilities (31 per cent), according to Census 2011. This clearly indicates the failure of government programmes to change the centuries-old practice of defecation in the open. This neglect of safe sanitation has had catastrophic outcomes in terms of human well-being. This case study is an analysis of the latest central government Swachch Bharat Mission - Gramin (Clean India Mission - Rural) (or SBM-G), which has achieved much greater success than any hitherto government effort in providing access to and use of toilets, especially in rural areas where the need is greatest. However, any conception of achieving ODF status, or free of open defecation, in a village (or any limited geography) is more than merely building toilets. The Sanitation Learning Hub commissioned case studies of sanitation campaigns in both India and Nepal, drawing out the lessons learnt for other countries wishing to implement similar initiatives. Both case studies focus on how target setting and feedback and reporting mechanisms can be used to increase the quality of campaigns.