Abstract Trauma patients are a significant patient group for emergency medical services (EMS). Not only are injuries a significant cause of death, they also have a significant long-term impact on functionality and quality of life. Previous studies have shown that the injury-related mortality rate is higher in sparsely populated areas and that the majority of patients die before the arrival of EMS. Intensive care mortality is significant, and half of seriously injured patients develop multiple organ dysfunction. Airway management is one of the most important procedures that EMS provide for a critically injured patient, but making high-quality care available in a sparsely populated area is challenging. Seriously injured patients also appear to benefit from being transported directly to a trauma centre. In recent years particular attention has been given to the level and availability of EMS. Hospitals’ readiness to provide acute surgery is also being reorganised. More information is needed about the frequency, circumstances, outcome and acute care of serious and fatal injuries so that health care resources can be allotted appropriately and requirements for prevention can be identified. The purpose of this research was to investigate the frequency and circumstances of injury-related deaths in Northern Finland and the prognosis of trauma patients encountered by the Finnish helicopter emergency services (FinnHEMS). A particular objective was to examine differences between rural and urban areas. The National Advisory Committee for Aeronautics (NACA) severity score’s ability to predict 30-day mortality was also examined. The fourth part of the study aimed to investigate the pre-hospital airway management performed by non-physicians in Northern Finland. The study material was comprised of trauma deaths that occurred in Northern Finland in 2007–2011, trauma patients encountered by FinnHEMS units in Northern Finland in 2012–2013, patients encountered by HEMS in Northern Norway in 1999–2009 and a questionnaire regarding pre-hospital airway management to non-physicians. The study concluded that the rate of trauma deaths is high in Northern Finland, and the influence of alcohol was found in nearly half of pre-hospital trauma death cases. A larger portion of pre-hospital deaths also took place in rural areas. Trauma patients encountered by FinnHEMS units in urban areas who survived to hospital, appeared to have higher 30-day mortality than patients injured in rural areas. The most probable explanation for this difference is that patients injured in urban areas survive to hospital, while trauma patients in rural areas die pre-hospital. The NACA score was found to reliably predict 30-day mortality. Due to its simplicity, the NACA score can be used to compare patient material from different HEMS bases. It was found that non-physicians seldom performed airway management. On average, the frequency of performing airway management was low, and there is a need to improve maintenance of skills. / Tiivistelmä Vammapotilaat ovat merkittävä ensi- ja tehohoidon potilasryhmä. Paisi, että vammautumiset ovat merkittävä kuolinsyy, aiheuttavat ne myös merkittäviä pitkäaikaisvaikutuksia toimintakykyyn ja elämänlaatuun. Aikaisemmissa tutkimuksissa on osoitettu, että vammakuolleisuus on yleisempää harvaanasutuilla seuduilla ja valtaosa potilaista kuolee jo ennen ensihoidon saapumista paikalle. Tehohoitokuolleisuus on merkittävää ja puolet vaikeasti loukkaantuneista potilaista kärsii monielinvauriosta. Ensihoidon tärkeimpiä tehtäviä kriittisesti vammautuneilla on hengitystien varmistaminen, mutta korkeatasoisen hoidon saatavuus harvaanasutulla seudulla on haasteellista. Vaikeasti vammautuneet potilaat näyttävät myös hyötyvän kuljetuksesta suoraan lopulliseen hoitopaikkaan. Viime vuosina ensihoidon tasoon ja saatavuuteen on kiinnitetty erityistä huomiota. Lisäksi sairaaloiden päivystysvalmiuden uudelleenorganisointi on käynnissä. Lisätietoa tarvitaan vakavien ja kuolemaan johtavien vammojen esiintyvyydestä ja olosuhteista, ennusteesta sekä akuuttihoidon toteutumisesta, jotta terveydenhuollon resursseja voitaisiin kohdentaa tarkoituksenmukaisesti ja ennaltaehkäisyn tarpeet voitaisiin tunnistaa. Tämän tutkimuksen tarkoituksena oli selvittää vammakuolemien esiintyvyyttä ja olosuhteita Pohjois-Suomessa sekä suomalaisten lääkintä- ja lääkärihelikopteriyksikköjen (FinnHEMS) kohtaamien vammapotilaiden ennustetta. Erityisenä tavoitteena oli tutkia maaseutu- ja kaupunkialueiden eroja. Lisäksi tutkittiin National Advisory Committee for Aeronautics (NACA)- vaikeusasteluokittelun kykyä ennustaa 30 päivän kuolleisuutta. Neljännen osatyön tavoitteena oli tutkia ensihoitajien suorittaman hengitystien varmistamisen käytäntöä Pohjois-Suomessa. Tutkimusaineisto koostui vuosina 2007‒2011 Pohjois-Suomessa tapahtuneista vammakuolemista, FinnHEMS:in yksiköiden kohtaamista vammapotilaista Pohjois-Suomessa vuosina 2012‒2013, Pohjois-Norjan pelastushelikopterin kohtaamista potilaista vuosina 1999‒2009 sekä ensihoitajille tehdystä kyselytutkimuksesta hengitystien hallintaan liittyen. Tutkimuksessa todettiin, että kuolemaan johtaneiden vammojen esiintyvyys on korkea Pohjois-Suomessa. Lisäksi havaittiin, että lähes puoleen sairaalan ulkopuolella tapahtuneisiin vammapotilaiden kuolintapauksiin liittyi alkoholi. Maaseudulla myös suurempi osa menehtyi sairaalan ulkopuolella. FinnHEMS:in yksiköiden kaupunkialueella kohtaamilla vammapotilailla, jotka selvisivät sairaalaan, havaittiin viitettä korkeampaan 30 päivän kuolleisuuteen verrattuna maaseudulla vammautuneihin. Ero johtuu todennäköisemmin siitä, että kaupunkialueella vammautuneet ehtivät sairaalaan kun taas maaseudulla vammapotilaat kuolevat jo ennen ensihoitopalvelun saapumista. NACA-vaikeusasteluokittelun todettiin ennustavan luotettavasti 30 päivän kuolleisuutta. Yksinkertaisuutensa vuoksi se soveltuu potilasmateriaalin vertailemiseen eri tukikohtien välillä. Ensihoitajan suorittama hengitystien varmistaminen havaittiin olevan harvinaista. Keskimääräisesti suoritteita tapahtui harvoin, ja taitojen ylläpitämisessä oli parantamisen varaa.

La boîte de transmission principale (BTP) est une des principales sources dubruit perçu dans les cabines d’hélicoptères et pénalise fortement le confort acoustique deséquipages et passagers. Afin de réduire l’impact de cette source, les phénomènes acoustiqueset vibratoires mis en jeu par les boîtes de transmission à engrenages doivent être compris etsimulés durant les phases de développement. De cette façon, le comportementvibroacoustique des BTP pourra être amélioré dès la conception, réduisant ainsi le coût, lamasse et les difficultés d’intégration des solutions d’insonorisation. Ce travail présente lesBTP d’hélicoptères ainsi que le bruit qu’elles génèrent. Il présente également nosdéveloppements concernant la modélisation du comportement dynamique des BTP afin d’encalculer le bruit. Nous avons développé un code éléments finis permettant d’effectuer desétudes paramétriques afin d’ajuster le design des boîtes de transmission lors des phases dedéveloppement. Notre modèle est capable de calculer les efforts dynamiques aux paliers detransmissions composées de plusieurs engrenages cylindriques et spiro-coniques. Enfin, nousanalysons des mesures acoustiques et vibratoires effectuées autour de deux BTP pourplusieurs conditions de couple et vitesse. Ces mesures nous permettent de mieux comprendrele comportement vibroacoustique des BTP et de confirmer certaines tendances observées avecnotre modèle / Main gearbox (MGB) is one of the main noise sources in helicopter cabinsand it strongly penalizes acoustic comfort of crews and passengers. In order to reduce theimpact of this source, acoustic and vibration mechanisms of gearboxes have to be understoodand simulated during the development phases. By this way, MGB vibroacoustic behaviourcould be improved by design, thus reducing cost, additional weight and integration difficultiesof sound-proofing solutions. This work presents helicopters MGB and the noise they generate.It also presents our developments regarding the modelling of MGB dynamic behaviour fornoise computation. We have developed a finite elements code allowing to conduct parametricstudies to tune the gearboxes design in early development phases. Our model is able tocompute dynamic loads on bearings of any transmission composed of several cylindrical andspiral bevel gears. At last, we analyse acoustic and vibration measurements done around twoMGB for several conditions of torque and speed. These measurements allow to betterunderstand MGB vibroacoustic behaviour and to confirm some trends observed with ourmodel

Cette thèse étudie certains problèmes plus importants dans le sens de guidage, navigation et contrôle présentés dans une catégorie particulière de mini véhicules aériens (MVA) : le MVA convertible avec des ailes fixes et disques pendulaires. Cet aéronef est capable de changer sa configuration de vol, du vol stationnaire au vol palier et vice versa, au moyen d’une manœuvre de transition. Motivé par des applications civiles, on étudie théoriquement et expérimentalement les principes de contrôle en fonction de Lyapunov pour les dynamiques présentées dans le MVA convertible. Des résultats de convergence asymptotique sont obtenus sur l’enveloppe de vol complet du véhicule : d’un vol vertical à basse vitesse à un vol vers l’avant à grande vitesse. Cette thèse est divisée en quatre parties principales : l’étude de 1) les aéronefs à voilure fixe ; 2) le quadrirotor (avion équipe de quatre moteurs) ; 3) l’aéronef convertible ; 4) les applications de vision en utilisant l’aéronef convertible. Dans la première partie, un principe de contrôle en fonction de Lyapunov est développé pour diriger un mini véhicule aérien à voilure fixe tout au long d’un chemin d’accès souhaité. En outre, un générateur de chemin d’accès est proposé. Le résultant de la stratégie du contrôle donne une convergence globale du chemin actuel du MVA au chemin d’accès souhaité. Dans la deuxième partie, un contrôle en fonction de Lyapunov à l’aide de la théorie de la perturbation du singulier est proposé et appliqué sur la dynamique du MVA. En effet, dans cette partie on a abordé le problème diagnostic et la détection de pannes fault detection and diagnosis (FDD) pour un quadrirotor. Dans la troisième partie une nouvelle stratégie de contrôle pour effectuer la transition d’un avion convertible entre le mode avion et le mode hélicoptère, et vice versa, est présenté. L’analyse est effectuée pour le modèle longitudinal du PVHAT (Planar Vertical Helicopter-Airplane Transition) aéronef, lequel est un avion ayant disques pendulaires afin de réaliser la manœuvre de transition. L’algorithme de contrôle de boucle fermée qui en résulte, est prouvé être globalement asymptotiquement stable. Finalement, dans la quatrième partie de cette thèse, le problème de l’estimation et suivi d’un chemin à l’aide de vision système embarqué dans l’avion PVHAT est résolu. La stabilité globale exponentielle de la position sous-système ainsi que le contrôleur de commutation est démontrée. Des simulations illustratives et résultats expérimentaux sont obtenus sur plusieurs plateformes expérimentales développées dans cette thèse, pour évaluer l’applicabilité des principes contrôle proposés et mettre en valeur les mérites de l’approche. / This thesis studies some of the most relevant problems in the sense of guidance,navigation and control presented in a particular class of mini aerial vehicles (MAV) : the convertible MAV with fixed wings and tilting rotors. This aircraft is able to change its flight configuration from hover to level flight and vice-versaby means of a transition maneuver. Motivated by civilian applications, we theoretically and experimentally study Lyapunov-based control laws for dynamics presented in the convertible MAV. Results of asymptotic convergence are obtained over the complete flight envelope of the vehicle : from low-speed vertical flight through high-speed forward flight. We have divided this thesis in four main parts : the study of 1) the fixed-wingaircraft; 2) the quadrotor; 3) the convertible aircraft and 4) vision applications by using the convertible aircraft. In a first part, a Lyapunov-based controllaw is developed to steer a fixed wing mini aerial vehicle along a desired path. Furthermore a path generator is proposed. The resulting control strategy yields global convergence of the current path of the MAV to the desired path. In a second part, a Lyapunov-based control using singular perturbation theory is proposed and applied on dynamics of the MAV. Furthermore, in this part we address the problem of fault detection and diagnosis (FDD) for a quad-rotor. In the third part a new control strategy for the transition between airplane and helicopter mode, and vice versa, in convertible planes is presented. The analysis is carried out for the longitudinal model of the PVHAT (Planar VerticalHelicopter-Airplane Transition) aircraft, which is an airplane having tilting rotors in order to achieve the transition maneuver. The resulting closed loop control algorithm is proved to be globally asymptotically stable. Finally in thefourth part of this thesis the problem of estimation and tracking of a road using avision embedded system in the PVHAT aircraft is solved. The global exponential stability of the position subsystem together with the switching controller is demonstrated. Illustrative simulations and experimental results obtained on several experimental platforms developed in this thesis, assess the implementability of the proposed control laws and highlight the merits of the approach.

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[pt] A Petrobras, maior empresa de óleo e gás do Brasil e uma das maiores do mundo, possui mais de 94 porcento da sua produção proveniente de campos offshore. Na região Sudeste o transporte dos trabalhadores para as unidades marítimas de exploração e produção é realizado por modal aéreo, através de helicópteros afretados de médio a grande porte. Para atender ao grande número de voos, a Petrobras possui uma central de planejamento e programação de voos, cujo objetivo é construir escalas de atendimento eficientes, em relação ao uso de recursos e ao nível de serviço. Um dos desafios enfrentados é gerar, manualmente, programações dos voos em situações de ruptura do atendimento, como por exemplo quando ocorre interrupção de pousos e decolagens devido a condições meteorológicas adversas (exigindo que os voos sejam programados para horários posteriores aos previamente planejados). Nessa dissertação de mestrado, é proposta uma abordagem de programação estocástica para gerar a programação de voos offshore ótima do ponto de vista do nível de serviço, reduzindo os atrasos esperados nos voos. Considerando a característica combinatória dos problemas de agendamento, utilizou-se o método de Aproximação pela Média Amostral (SAA) para gerar os cenários do modelo de programação estocástica. Um modelo de Simulação de Eventos Discretos também foi desenvolvido para avaliar o nível de serviço das programações de voos geradas. Os resultados numéricos indicam que a abordagem estocástica pode reduzir atrasos imprevisíveis, que causam grande impacto nos passageiros e na cadeia de suprimentos. / [en] Petrobras, the largest oil and gas company in Brazil and one of the largest in the world, has more than 94 percent of its production from offshore fields. In the Southeast region, workers are transported to offshore exploration and production units by air, using medium size to large size chartered helicopters. To serve the large number of flights, Petrobras has a flight planning and scheduling center, with the objective of building efficient service scales, related to the use of resources and the level of service. One of the challenges faced is to generate, manually, flight schedules in situations of disruption of service, such as when there is an interruption of landings and takeoffs due to adverse weather conditions (requiring that flights be scheduled for times after those previously planned). In this master s thesis, a stochastic programming approach is proposed to generate the optimal offshore flight schedule from the service level point of view, reducing expected flight delays. Considering the combinatorial characteristic of scheduling problems, the Sample Average Approximation (SAA) method was used to generate the scenarios of the stochastic programming model. A Discrete Event Simulation model was also developed to evaluate the service level of the generated flight schedules. The numerical results indicate that the stochastic approach can reduce unpredictable delays, which have a major impact on passengers and the supply chain.

Helicopter parenting has emerged as a prevalent phenomenon in families with adult children. Due to its developmentally inappropriate nature, helicopter parenting sometimes serves as a risk factor for children. In addition, culture and parents’ gender shape parenting and adult children’s outcomes. The purpose of the present study was to identify multidimensional constructs of helicopter parenting among college students and describe how latent classes of helicopter parenting of mothers and fathers are related to college students’ game and social media addictive behaviors in the United States and China. Using a three-step latent class approach, data from 1402 mother and young-adult child (MC) and 1225 father and young-adult child (FC) pairs in the United States and 527 MC and 426 FC pairs in China were analyzed. Four helicopter parenting latent classes (strong, strong but weak direct intervention, weak but strong academic management, and weak) were identified among MC and FC pairs in the United States, but three latent classes (strong, strong but weak direct intervention, and weak) were identified in China. In addition, college students whose parents were in the strong helicopter parenting class reported a higher level of game and social media addictive behaviors than those in weak and weak but strong academic management classes in the United States, but not in China. These findings indicate that helicopter parenting is multidimensional in nature in both American and Chinese families, but the impact of helicopter parenting on college students’ game and social media addictive behaviors differs between the two countries.

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The thesis will discuss the Systems Engineering phase of an original Conceptual Design Engineering Methodology for Aerospace Engineering-Vehicle Synthesis. This iterative phase is shown to benefit from digitization of Integrated Product&Process Design (IPPD) activities, through the application of Product Lifecycle Management (PLM) technologies. Requirements analysis through the use of Quality Function Deployment (QFD) and 7 MaP tools is explored as an illustration. A "Requirements Data Manager" (RDM) is used to show the ability to reduce the time and cost to design for both new and legacy/derivative designs. Here the COTS tool Teamcenter Systems Engineering (TCSE) is used as the RDM. The utility of the new methodology is explored through consideration of a legacy RFP based vehicle design proposal and associated aerospace engineering. The 2001 American Helicopter Society (AHS) 18th Student Design Competition RFP is considered as a starting point for the Systems Engineering phase. A Conceptual Design Engineering activity was conducted in 2000/2001 by Graduate students (including the author) in Rotorcraft Engineering at the Daniel Guggenheim School of Aerospace Engineering at the Georgia Institute of Technology, Atlanta GA. This resulted in the "Kingfisher" vehicle design, an advanced search and rescue rotorcraft capable of performing the "Perfect Storm" mission, from the movie of the same name. The associated requirements, architectures, and work breakdown structure data sets for the Kingfisher are used to relate the capabilities of the proposed Integrated Digital Environment (IDE). The IDE is discussed as a repository for legacy knowledge capture, management, and design template creation. A primary thesis theme is to promote the automation of the up-front conceptual definition of complex systems, specifically aerospace vehicles, while anticipating downstream preliminary and full spectrum lifecycle design activities. The thesis forms a basis for additional discussions of PLM tool integration across the engineering, manufacturing, MRO and EOL lifecycle phases to support business management processes.