Spelling suggestions: "subject:"electrical mobility""
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Business Model Innovation - the solution for EV producers : A qualitative study on Business Model Innovation in the context of Electric Vehicles int he NordicsMalchev, Velislav, Buchtojarovas, Jakubas January 2018 (has links)
Electric Vehicles are a growing trend globally and are currently disrupting the conventional automotive industry, therefore firms in the sector need new business models around their new value propositions. The concept of business model innovation presents an interesting point of view towards the challenges those firms face and provide possible solutions for them. The literature on this relatively new topic is scarce and needs more cumulative empirical research. We engage in a multiple-case study and explore how entrepreneurial and incumbent electric vehicle companies in the Nordics use BMI to overcome their biggest challenges and advance the development of the sector. With our findings, we provide an insight of some of the newest advancements in the EV technology, investigate what are the key antecedents, moderators, and outcomes of the BMI process for the researched companies and build on the existing literature on the topic. Finally, practitioners can gain a better understanding of the concepts of BM and BMI process and their importance for surviving in the dynamic electric vehicle market.
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De l'automobilité à l'électromobilité : des conservatismes en mouvement ? : la fabrique d'une politique publique rurale entre innovations et résistances / From automobility to e-mobility : moving conservatisms?Cranois, Aude 11 October 2017 (has links)
Les sociétés rurales sont caractérisées par des modes de vie et de déplacement quotidiens particulièrement dépendants du mode automobile, et la mobilité est, depuis longtemps déjà, un enjeu central des politiques publiques qui leur sont destinées. Les collectivités rurales sont prises dans une tension entre l'injonction à adopter des mobilités plus diversifiées, plus économes, et, en même temps, un climat d'incertitudes et des contraintes politiques et budgétaires qui freinent les choix de rupture. La thèse analyse les conditions d'émergence d'une offre de publique en faveur de l'électromobilité alors qu’une multitude de dispositifs encouragent l'introduction de voitures électriques, de vélos à assistance électrique et de bornes de recharge. Les acteurs ruraux s'en saisissent-ils pour autant ? Et de quelle manière ? La recherche questionne donc les modalités particulières du saisissement des instruments d’incitation liés à l’électromobilité dans les petites collectivités rurales et étudie la manière dont celles-ci acceptent, en la reformulant, cette injonction à la modernité et au changement. L'hypothèse centrale de cette thèse est que l'émergence de l'offre électromobile dans le monde rural fait l'objet d'une construction et d'une mise en forme conjointe, mais loin d'être consensuelle, entre le monde local (usagers, élus, opérateurs privés) et les acteurs extérieurs. En mobilisant une approche pluridisciplinaire, le déploiement très progressif de l’électromobilité est analysé dans le cadre d'une démarche de recherche menée dans la Manche et en Aveyron. Après une contextualisation de l’émergence des politiques électromobiles dans les deux territoires étudiés, la thèse montre comment ce nouveau champ de l'action publique permet aux élus ruraux d'adopter avec prudence et sans renier l'automobilité auxquels ils restent attachés, un nouveau référentiel de mobilité durable. L’électromobilité est une proposition saisie ou détournée, discutée et expérimentée avant d'être éventuellement intégrée à une stratégie territoriale en fonction des ressources et du rôle de l’acteur local. Ensuite, après avoir constaté la très grande diversité des thématiques qui introduisent l'offre politique de l’électromobilité dans les territoires ruraux, la thèse propose une typologie pour mieux comprendre le foisonnement de micro-projets électromobiles et les visées auxquelles est censé répondre du point de vue des élus. L’appropriation de l’électromobilité est engagée via une pragmatique locale par des acteurs à la recherche d’un nouveau modèle d’aménagement rural. Nous montrons, à travers quelques projets de plus grande envergure visant à déployer des bornes de recherche ou des véhicules à hydrogène, que le déploiement électromobile est aussi un objet de pouvoir. Dans deux départements marqués historiquement par la production électrique (l'une d'origine nucléaire, l'autre hydroélectrique) et donc par les proximités historiques de l'industriel et du monde politique local, la thèse montre le saisissement stratégique de l’électromobilité par des acteurs locaux, comme les syndicats départementaux d’énergie. Il s’agit de promouvoir un nouveau modèle économico-énergétique territorial tout en maintenant les proximités politico-industrielles de toujours. L'un des principaux résultats est le constat de l'écart entre l'apparence d'intense renouvellement que relaient les discours et la mise en scène de l'offre politique et le saupoudrage presque anecdotique des projets réels. Ces démarches semblent porter les ferments d’une réinvention économique, territoriale et sociale du monde rural très ambiguë. D'un côté, l'électromobilité est utilisée au profit de stratégies de conservation de rapports de pouvoir, même si certaines formes d'appropriation de l'électromobilité reconfigurent discrètement les cadres de production des politiques publiques d'aménagement rural, débouchant sur une image de la transition mobilitaire rurale plurielle, sinon divergente / Renewed mobility policies have been developed since the mid-2000s in French rural areas, which are particularly car dependent. Local authorities have chosen to offer alternatives to automotive mobility. This thesis analyzes the emergence of public electric mobility policies, while national or European incentives encourage their development (cars, bicycles, charging stations). Do rural actors seize these incentives? And how? This study questions therefore the particular ways in which the incentive mechanisms related to electromobility in small rural communities are taken advantage of and how local authorities consent to this encouragement to change. The main hypothesis of this research is that the emergence of e-mobility in rural territories is elaborated and shaped by both local stakeholders and external actors, not always in consensual ways. With a multidisciplinary approach, we study the gradual deployment of e-mobility in two French territories, the Manche department and the Aveyron department. This study is based on the monitoring of several projects, and on interviews of local stakeholders.Our results show how e-mobility is used by local stakeholders to negotiate the turn toward a more sustainable rural transportation network and to reconsider the automobility system. It is seized, discussed, tested or rejected and might be integrated into a territorial strategy, depending on the resources and on the role of local actors.E-mobility is undertaken in several ways. First, it is implanted in a diversity of local public policies (tourism, social inclusion, environment), within smaller projects such as electric bike rental or electric car sharing system. It emerges through practical initiatives which stakeholders come up with in search of new mobility systems for the territory.Secondly, we show that e-mobility is a strategic tool, in larger projects (hydrogen, charging stations) in order to promote an energy system for the territory. In two territories historically shaped by electrical production (nuclear power and hydroelectric power), we demonstrate that e-mobility represents a powerful tool in the context of an energy transition, as it enables stakeholders to secure their role within these territories.The movement toward this innovation is made in the continuity of the rural and local policies, targetting isues such as tourism or local economy, and in connection with the national energy policies of energy transition. Finally, we hypothesize that these projects can also lead to discontinuities, to a reinvention of the rural, toward a new energy network, and new mobilities.
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Aligning sustainability and corporate strategies: the case of hybrid-electric vehicles and Fiat-Chrysler AutomobilesNarullo, Andrea 10 March 2015 (has links)
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I kindly ask you to do these changes:
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2) Regarding the knowledge field. There are only 3 field of knowledge of MPGI registered in CAPES (The Government Department responsible for the rules of Masters Programs) and they are: Economia e Finanças Internacionais, Internacionalização de Empresas e Gestão e Competitividade em Empresas Globais.
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Previous issue date: 2015-03-10 / This study analyses the integration of environmental sustainability into corporate strategy in the context of the car industry. The implementation of sustainability strategies and the development of hybrid-electric vehicles are investigated with reference to the case of a major player in the industry. Among the applications of electric mobility, which will increase the market presence in the forthcoming years due to stringent regulations and customer preferences, the research focused on hybrid-electric vehicles. The sustainability strategies of major car manufacturers and the subsequent implications in terms of product development, with a particular attention to hybrid-electric vehicles, were analysed via secondary data. Additionally, primary data was collected about the sustainability strategy of a major player in the industry and used to perform a case study. The analysis focused on critical drivers and aspects that impact on sustainability strategies aimed at reducing the environmental footprint of the car industry and on the development of hybrid vehicles. The analysis of the data showed that Fiat-Chrysler Automobiles (FCA) had a minor emphasis on electric mobility in terms of sustainability reporting. The conclusion presents an assessment of FCA’s corporate strategy in terms of environmental sustainability and a framework for HEV development with four different approaches that impact on the sustainability strategy of a carmaker. / Este estudo analisa a integração da sustentabilidade ambiental na estratégia das empresas no contexto da indústria automobilística. A implementação de estratégias de sustentabilidade e o desenvolvimento de veículos híbrido-elétricos são investigados com referência ao caso de um ator principal na indústria. Entre as aplicações de mobilidade eléctrica, que irá aumentar a presença no mercado nos próximos anos devido às regulamentações rigorosas e as preferências dos clientes, a pesquisa está focada em veículos híbrido-elétricos. As estratégias de sustentabilidade das grandes fabricantes de automóveis e as implicações subsequentes em termos de desenvolvimento de produtos, com uma atenção especial aos veículos elétricos híbridos, foram analisados através de dados secundários. Além disso, os dados primários foram coletados sobre a estratégia de sustentabilidade de um ator importante na indústria e usados para realizar um estudo de caso. A análise incidiu sobre os fatores críticos e os aspectos que têm impacto sobre as estratégias de sustentabilidade, que visam reduzir o impacto ambiental da indústria automobilística, e sobre o desenvolvimento de veículos híbridos. A análise dos dados mostrou que a Fiat-Chrysler Automobiles (FCA) teve uma ênfase menor na mobilidade eléctrica em termos de relatórios de sustentabilidade. A conclusão apresenta uma avaliação da estratégia corporativa da FCA, em termos de sustentabilidade ambiental, e apresenta um quadro para o desenvolvimento de veículos híbridos com quatro abordagens diferentes que têm impacto sobre a estratégia de sustentabilidade de uma montadora.
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Design elektrického skútru pro seniory / Design of Electric Mobility Scooter for ElderlyKašná, Marie January 2021 (has links)
The work deals with a design of an electric mobility scooter for seniors or people with limited mobility with regard to technical, ergonomic and aesthetic requirements. The final design is based on the results of design and technical analysis. Emphasis is placed on the needs of the target user, for whom the scooter means freedom of movement. The design solves insufficient storage space even for larger luggage, thanks to the different arrangement of internal components. We managed to create a product with a more psychologically friendly expression, with optimal ergonomics, acceptable to the wider environment
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Developing Infrastructure to Promote Electric MobilitySandin, Carl-Oscar January 2010 (has links)
Electric mobility, E-mobility, will play a central role in a sustainable future transport system. The potential of curbing climate change in both short and long term are significant. Emobility will also offer the possibility to leapfrog the Internal Combustion car, IC-car, economy for developing countries. The low dependence of oil will be a benefit but E-mobility will demand a well functional electricity grid. Development of this grid will be beneficial for the developing world. For the European society E-mobility will in long term offer lower operating costs, decreased dependence of oil and lower emission of pollutants and Green House Gases, GHGs. All these factors are beneficial for the European society. The transition to E-mobility will depend upon a set of different factors and will call for different actions in order to overcome the barriers of E-mobility. A well developed charging infrastructure will be important in order to offer the full potential of E-mobility. The infrastructure will develop along with the market introduction of Electrical Vehicles, EVs. It is important that there are existing charging alternatives in the early introduction phase of EV in order to avoid the stagnation in the transition toward E-mobility. In order to provide the proper conditions for E-mobility, the determining factors must be investigated and evaluated. The four main factors are economical, social, R&D and infrastructure. The European driving patterns meet the offered operating range of an EV with ease. This means that EV has the potential to become an inner city vehicle under existing conditions. The investigation of the four determining factors leads to a base from which an implementation plan is suggested. The implementation plan is directed toward governments, energy utilities and other active participants in the development. The key factors of the implementation plan are to actively engage in the market, see E-mobility as a disruptive technology, use spin-off companies and social transparency. In order to gain the most from the implementation plan it is important that the correct actions are taken at the correct time. Therefore the transition period is divided into three phases; the introduction phase, the commercial phase and the re-development phase. The introduction phase will create the basic conditions for E-mobility. Government’s main action will be to invest in EVs and offer subsidies and other incentives to major companies that will equip their vehicle fleets with EVs. These actions will send signals toward vehicle Original Equipment Manufactures, OEMs, and other actors that the market of EVs is worth investing in. During the introduction phase try-out sessions, demonstrations and hearings will be important in order to communicate the advantages of E-mobility to society. Energy utilities will work to create roaming deals and standardization of important components and characteristics. The commercial phase is the most important phase for social adoption of E-mobility. During this phase commercial businesses will use EV charging a competitive advantage. New business models will be one of the keys to fully adoption of E-mobility. Cross industry alliances will reduce the initial cost, offer the service of a vehicle without owning it and leasing deals. The perception of travelling will shift and reduction of operating cost will be evaluated against travel time and planning. The re-development phase is based on a society that has adopted E-mobility. The development will proceed in order to offer more advantages to drivers but also to increase efficiency and to use the full potential of E-mobility.
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Electrically-assisted bikes: Potential impacts on travel behaviourCairns, Sally, Behrendt, Frauke, Raffo, David, Beaumont, C., Kiefer, C. 17 November 2020 (has links)
This paper reports on a review of the European literature about the impacts of having an electrically-assisted bike available to use, together with results from a trial in the UK city of Brighton, where 80 employees were loaned an electrically-assisted bike for a 6–8 week period. In the Brighton trial, three-quarters of those who were loaned an e-bike used them at least once a week. Across the sample as a whole, average usage was in the order of 15–20 miles per week, and was accompanied by an overall reduction in car mileage of 20%. At the end of the trial, 38% participants expected to cycle more in the future, and at least 70% said that they would like to have an e-bike available for use in the future, and would cycle more if this was the case. This is consistent with the results of the European literature which shows that when e-bikes are made available, they get used; that a proportion of e-bike trips typically substitutes for car use; and that many people who take part in trials become interested in future e-bike use, or cycling more generally.
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THE POLICY-TECHNOLOGY NEXUS FOR MITGATING PASSENGER ON-ROAD TRANSPORTATION GHG EMISSIONS: E-BUS, E-RIDE-SHARE, OR OTHER ALTERNATIVES / ASSESSMENT OF TRANSPORTATION GHG MITGATING SOLUTIONSSoukhov, Anastasi January 2021 (has links)
The passenger transportation sector is notoriously difficult to decarbonize. In this thesis, two distinct and novel methodologies to estimate the environmental impact of alternative and conventional transportation technologies are developed.
In Chapter 2, a provincial fleet policy-driven linear programming model is developed to minimize the cost of three passenger vehicle electrification policies in Ontario under a 30% GHG reduction target by 2030. Provincial life-cycle emissions and total-cost-of-ownership associated with policy allocation is estimated. The results highlight that electrification of on-road passenger transportation will not be sufficient to meet the 30% reduction target despite Ontario's low-carbon electricity grid. Instead, reductions of between 24% to 26% are forecasted at an annual cost (for ten years) of between CAD 0.29 to 0.3 billion annually indicating that additional policies are necessary to realize a 30% reduction target.
In Chapter 3, a trip-level vehicle framework is developed to determine under what operating conditions transit buses and passenger cars will be environmentally beneficial across the dimensions of technology, service mode, and power source pathway. The well-to-wheel energy consumption and GHG emissions are simulated for over 450 operating scenarios. Emissions are then normalized through passenger-trip emission thresholds to facilitate equivalent comparison across all dimensions. The results indicate that the most beneficial solution are fuel-cell electric car-share, battery electric car-share, and battery electric bus all powered by low-carbon intensity power sources at average occupancy (7.9-19.7 gCO2e passenger-service-mode-trip-km-travelled-1). Furthermore, transit bus technologies have the potential to reduce up to 2.3 times more GHG per passenger-trip than comparable ride-share passenger cars at average occupancies.
The results of Chapter 2 and 3 highlight that technology alone may not be sufficient to achieve significant GHG reductions; policy which leverage local operating data and target GHG reduction associated with passenger-trips are critical to informing under what conditions a mobility solution is environmentally beneficial. / Thesis / Master of Civil Engineering (MCE) / There is a dire need to evaluate the effectiveness of transportation GHG mitigation policies as alternative mobility solutions are being adopted and the pressure to respond to climate change intensifies. This work evaluates the effectiveness of policy optimization and vehicle-level simulation techniques to inform GHG mitigation decision-making.
A two-step approach is adopted herein. At the strategic level, a cost optimization model for passenger vehicle electrification policies in Ontario is calibrated to identify the optimal allocation of provincial policy to achieve a 30% GHG reduction by 2030. Next, a micro level focuses on the energy consumption of eight vehicle technologies over 450 operational scenarios is simulated and trip-level passenger emissions are estimated to reveal the environmentally beneficial mobility option, corresponding passenger thresholds, and extent of variability associated with local operating conditions.
Overall, optimization and trip-level vehicle simulation can be used to demystify optimal decision-making related to mobility solutions.
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<b>ADVANCING OPERATIONAL ALGORITHMS FOR ELECTRIC MOBILITY SYSTEMS MODELING</b>Xiaowei Chen (19179424) 20 July 2024 (has links)
<p dir="ltr">The transportation industry is undergoing a significant transformation with the widespread adoption of electric vehicles (EVs). This transition has spurred the development of innovative methodologies aimed at addressing operational challenges and optimizing infrastructure planning for EV mobility. However, the availability of comprehensive EV trajectory datasets remains limited, leading to potentially biased solutions. Moreover, persistent consumer concerns such as range anxiety and inadequate charging infrastructure hinder widespread EV adoption. Therefore, to accelerate the adoption of EVs and improve the efficiency of electrified mobility operations, there is a pressing need for a comprehensive framework that encompasses dataset preparation, system performance evaluation, and the development of EV operational strategies.</p><p dir="ltr">This dissertation endeavors to advance the field of energy-efficient EV mobility systems through a comprehensive approach integrating data analysis, machine learning & reinforcement learning techniques, and optimization methodologies. Initially, a framework is proposed to overcome the challenge of limited and unreliable EV trajectory datasets by accurately detecting and generating EV trips from mixed vehicle trajectory datasets. Subsequently, the study investigates the impact of EVs on existing mobility systems, particularly within the ride-hailing systems where EVs play a significant role. The analysis includes consideration of taxi drivers' charging costs in queueing models to reveal the influence of electricity rates on system performance, such as driver supply and passenger demand. Additionally, practical algorithms are developed to optimize EV efficiency operations, including energy consumption estimation, energy-efficient routing, and charging control strategies. Specifically, this dissertation analyzes correlations between EV energy consumption and various factors to devise prediction intervals that accommodate uncertainties in road-level energy consumption estimation. Besides, a novel model for EV online energy-efficient routing is proposed, facilitating the identification of minimal expected energy consumption paths for multiple origin-destination pairs simultaneously. These algorithms, augmented with a path elimination mechanism and variance-covariance information, exhibit superior performance compared to traditional methods, significantly reducing energy consumption and enhancing overall operational efficiency. Finally, a framework for EV charging control recommendation is designed under a power-sharing strategy, considering multiple objectives, such as charging time & costs and the pressure on the power grid.</p><p dir="ltr">The methodologies and insights presented in this dissertation advance the understanding and implementation of energy-efficient EV operations and lay the scientific foundations of a more sustainable and efficient EV mobility system. Furthermore, this dissertation offers valuable guidance for policymakers, urban planners, and industry stakeholders in developing more efficient and environmentally friendly transportation networks.</p><p><br></p>
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Desempenho de meios filtrantes na remoção de partículas nanométricas de aerossóisFeitosa, Natália dos Reis 12 March 2009 (has links)
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Previous issue date: 2009-03-12 / Universidade Federal de Sao Carlos / The interest of studies on the development of techniques for removal of particles in the nanosized scale was promoted by concern about air quality and human health, in addition to restrictions on the control of ultrafine particles, wich are more intransigent by environmental laws. Additionally, the increasing application of nanoparticles in various areas of science and technology has stimulated the development of studies on the subject. Amongst the several equipments capable to operate with efficiency on the particle removal, the fibrous filters are distinguished. Such filters are, in principle, capable to act in sub-micrometer scale, but there is little information about its performance in the nano-sized scale. In this work the performance of a polyester filter, of a HEPA cellulose filter, of a quartz microfiber filter and also of cylindrical filtering membrane, provided by Pam-Membranas Seletivas Ltda, were evaluated. The experimental system was able to simulate a contamination of nanometric particles in a stream of ultrapure air, with the aim of investigating the efficiency of filter media in the removal of nanoparticles. The test aerosol was constituted by NaCl polydisperse nanoparticles, ranging from 6.15 to 245.1 nm. The performance of the filter was evaluated through the analysis of the efficiency of removal of nanoparticles, for the counting of particles before and after to cross the filtering media, using the electric mobility technique. This procedure was performed using the TSI Scannig Mobility Particle Sizer (SMPS), model 3936, which provides the particles concentration, in size range. The results, in general, have showed that the filter media loses efficiency with the increasing filtration velocity and increasing particle size, in the ranged studied, indicating the typical behavior of difusional mechanism. The filtering membranes have showed better performance in the removal of particles unlike the others filters analysed there was no tendency to increase the penetration of particles with increasing the velocity of filtration or particle diameter. / O interesse de estudos acerca do desenvolvimento de técnicas de remoção de materiais particulados na escala nanométrica foi impulsionado pela preocupação com a qualidade do ar e da saúde humana, somada às restrições do controle de particulados ultrafinos, cada vez mais intolerantes pelas leis ambientais. Adicionalmente, a crescente aplicação de partículas nanométricas em diversas áreas da ciência e tecnologia estimulou o aprofundamento de estudos sobre o assunto. Dentre os vários equipamentos capazes de operar com eficiência na remoção de partículas ultrafinas, destacam-se os filtros fibrosos. Tais filtros são, em princípio, capazes de atuar em escala submicrométrica, mas as informações referentes ao seu desempenho em escala nanométrica ainda são pouco conhecidas. No presente trabalho avaliou-se o desempenho de filtros de poliéster, de celulose HEPA, de microfibras de quartzo e, também, de membranas filtrantes cilíndricas, fornecidas pela empresa Pam-Membranas Seletivas Ltda. O sistema experimental disponível era capaz de simular uma contaminação de partículas nanométricas em uma corrente de ar ultrapuro, a fim de que, posteriormente, fosse possível investigar a eficiência dos meios filtrantes na operação de remoção das mesmas. O aerossol de teste era constituído por nanopartículas polidispersas de NaCl, produzidas na faixa de diâmetros de 6,15 a 245,1 nm. O desempenho do filtro foi avaliado através da análise da eficiência de remoção das partículas nanométricas, pela contagem das partículas antes e após a passagem pelo meio filtrante, utilizando a técnica de mobilidade elétrica. Tal procedimento foi realizado por meio de um equipamento da TSI, o Scannig Mobility Particle Sizer (SMPS), modelo 3936, que fornece o número de partículas por faixa de tamanho. Os resultados, em geral, mostraram que a eficiência dos meios filtrantes diminui com o aumento da velocidade de filtração e com aumento do diâmetro, na faixa em estudo, indicando o comportamento típico do mecanismo difusional. As membranas apresentaram um melhor desempenho na remoção das partículas, visto que, diferentemente dos demais meios filtrantes analisados, não se observou tendência para o aumento da penetração de partículas, com o aumento da velocidade de filtração ou diâmetros das partículas, sendo que, em relação à faixa de tamanho, a penetração ocorreu de forma aleatória.
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Acceptance of Electric Mobility System Components and the Role of Real-Life Experience / Akzeptanz von Elektromobilitätssystemkomponenten und die Rolle von praktischer ErfahrungSchmalfuß, Franziska 19 December 2017 (has links) (PDF)
Neben der Verringerung von Verkehrsunfällen und Staus ist ein wichtiges Ziel der Verkehrspsychologie, die Luftverschmutzung durch den Verkehr zu reduzieren. Elektrofahrzeuge (BEVs) könnten die CO2-Emissionen deutlich reduzieren. Der weltweite BEV-Bestand nimmt zwar stetig zu, aber die Marktanteile in den meisten EU-Ländern lag 2016 dennoch nur bei rund 1% (International Energy Agency, 2016). Eine weitreichende Verbreitung von Elektrofahrzeugen birgt nicht nur Vorteile in sich, sondern kann auch zur Belastung der Stromnetze führen. ‚Intelligente Ladesysteme‘, die den Ladeprozess an die Netzbelastung und Nutzeranforderungen (z.B. Ladestand bei Abfahrtszeit) anpassen, gelten als vielversprechende Lösung. Vor dem Hintergrund der bisher geringen Verbreitung von Elektrofahrzeugen und der mit einem Erfolg der Elektromobilität steigenden Relevanz intelligenter Ladesysteme entsteht die Notwendigkeit psychologische Faktoren zu identifizieren, die die Evaluation und Akzeptanz von Komponenten des Elektromobilitätssystems beeinflussen. An dieser Stelle knüpft die vorliegende Dissertation an.
Der (praktische) Erfahrungshorizont vieler Menschen in Bezug auf Elektrofahrzeuge und intelligente Ladesysteme ist sehr limitiert. Unerfahrene Nutzer solch neuer Systeme begegnen bisher unbekannten Herausforderungen in der Mensch-Maschine-Interaktion. Beispielsweise geht das elektrische Fahren, im Vergleich zum Fahren herkömmlicher Fahrzeuge, mit einer wesentlich niedrigeren Reichweite, einer geringeren Geräuschkulisse, neuen „Nachtankprozessen“ und Fahrfunktionen wie der Rekuperation (d.h. regeneratives Bremsen bei dem kinetische in elektrische Energie umgewandelt wird) einher. Dieses Thema wird ebenfalls in der vorliegenden Dissertation aufgegriffen.
Das erste Forschungsziel fokussierte die allgemeine Bewertung und Akzeptanz von Elektrofahrzeugen sowie den Einfluss von praktischer Erfahrung. Im Rahmen einer Feldstudie mit zwei 6-monatigen Studienphasen (Artikel II), einer Onlinestudie (Studie I von Artikel III) sowie einer 24-Stunden Testfahrt (Studie II von Artikel III) wurde dieses Ziel untersucht. Für die verschiedenen Arten von Erfahrung (langzeitig mit gleichem Fahrzeug vs. unkontrolliert vs. kurzzeitig mit gleichem Fahrzeug) zeigten sich unterschiedliche Effekte auf die Akzeptanz von Elektrofahrzeugen, die detailliert diskutiert werden. Die Berichte der Feldstudienteilnehmer (langzeitige Erfahrung) zu Vor- und Nachteilen von Elektrofahrzeugen zeigten, dass sich die Salienz bestimmter Vor- und Nachteile über die Nutzungszeit hinweg ändert. Vor allem die Vorteile, die beim Alltagstest direkt erlebt werden können (z.B. das angenehme Fahrgefühl, die geringe Geräuschkulisse), waren in ihrer Salienz gestiegen. Es gibt erlebbare Barrieren, wie die Ladedauer, die innerhalb der Feldstudie an Prägnanz verloren, aber auch andere, wie die Reichweite, die in ihrer Bedeutsamkeit konstant blieben. Die Vorher-Nachher-Studien (Artikel II & Studie II von Artikel III) zeigten, dass die Erwartungen der Tester an solch ein Fahrzeug im Alltagstest insgesamt erfüllt werden und die Einstellung gegenüber Elektrofahrzeugen positiv bleibt. Im Rahmen der 24-Stunden-Testfahrt (kurzzeitige Erfahrung) zeigte sich zudem ein Anstieg in der Zufriedenheit mit Elektrofahrzeugen. Dem gegenüber stehen die geringen Kaufabsichten der Befragten. Der Alltagstest mit einem Elektrofahrzeug, egal ob kurz- oder langzeitig, zeigte keine Effekte auf die Kaufintention. Allerdings wiesen die Ergebnisse der Onlinebefragung darauf hin, dass Personen, die bereits ein Elektrofahrzeug gefahren sind, gegenüber dem Kauf eines Elektrofahrzeugs nicht so stark abgeneigt sind wie Unerfahrene, aber dennoch keine klare Intention zeigen.
Das zweite Forschungsziel bestand in der Untersuchung wie praktische Erfahrung mit dem Nutzerverhalten und der Evaluation bezüglich der Elektrofahrzeugcharakteristika zusammenspielt. Am Beispiel der Rekuperation wurde untersucht wie sich die Menschen im Rahmen einer 6-monatigen Feldstudie an solch eine Funktion gewöhnen, ihre Nutzung erlernen und ob sich dies in der Bewertung der Funktion widerspiegelt (Artikel I). Die Ergebnisse aus den Fahrzeugdaten weisen darauf hin, dass die Adaption an diese Funktion recht zügig abgeschlossen ist und dem Power Law of Practice (Newell & Rosenbloom, 1981) folgt. Die Rekuperationsfunktion wird durch die Nutzer positiv bewertet und die Zufriedenheit mit der Rekuperation steigt mit der Nutzungszeit. In zwei weiteren Studien wurde die Bewertung von Elektrofahrzeugcharakteristika zwischen Elektrofahrzeug-Erfahrenen und –Unerfahrenen verglichen. In der Onlinestudie (Studie I in Artikel III) mit dem unkontrollierten Erfahrungsfaktor zeigten sich kaum Unterschiede. Lediglich ‚Reichweite und Laden‘ bewerteten die Erfahrenen positiver. Kontrollierte, kurzfristige Erfahrung (Studie II in Artikel III) führte zu einer positiveren Bewertung von Beschleunigung und Fahrspaß, Geräuschlosigkeit, Sicherheit und Reliabilität, Umweltfreundlichkeit sowie des Rufs von Elektrofahrzeugen. Die Bewertung von Reichweite und Laden blieb unverändert.
Das dritte, übergeordnete Ziel dieser Dissertation bestand darin, akzeptanzbeeinflussende Faktoren zu identifizieren, die als Ansatzpunkte für zukünftige Weiterentwicklungen und Strategien zur Erhöhung der Akzeptanz genutzt werden können. Dazu wurde das Potential der Bewertung verschiedener Elektrofahrzeugattribute, der Faktoren der Theorie des geplanten Verhaltens (Ajzen, 1991) sowie der Erfahrung mit Elektrofahrzeugen zur Vorhersage der Akzeptanz im Rahmen der beiden Studien in Artikel III untersucht. Der soziale Faktor (subjektive Norm) und die Bewertung von ‚Reichweite und Laden‘ wirkten sich am stärksten auf die Vorhersage von Einstellungs- und Verhaltensakzeptanz aus. In der Onlinestudie mit between-subjekt Design, zeigte sich zudem ein starker Erfahrungseffekt auf die Kaufabsicht. Zudem erwies sich auch der Faktor ‚Beschleunigung und Fahrspaß‘ als relevante Größe für die Akzeptanz. Vor dem Hintergrund der aktuellen Entwicklungen, im Detail den sinkenden Batteriekosten und damit günstiger werdenden Reichweiteressourcen, eröffnen die Ergebnisse Ansatzpunkte, um die Akzeptanz zu steigern. Die Bewertung der Performanz und das angenehme Fahrgefühl beim elektrischen Fragen weisen einen nicht zu vernachlässigbaren Einfluss auf die Akzeptanz von Elektrofahrzeugen auf und konnten durch ein kurzzeitiges Erfahrungserlebnis positiv beeinflusst werden.
Das letzte Forschungsziel dieser Dissertation fokussierte das intelligente Laden. Die Ergebnisse der 5-monatigen Feldstudie (Artikel IV) zeigten, dass ein intelligentes Ladesystem (mit aktiver Nutzerbeteiligung) nutzbar und akzeptabel ist. Allerdings zeigten die Ergebnisse auch, dass eine positive Kosten-Nutzen-Bilanz für die Nutzer von hoher Relevanz ist. Der zusätzliche Aufwand beim Laden erwies sich als signifikant höher und die finanziellen Anreize durch die Nutzung des Systems als niedriger als erwartet. Zudem fühlten sich die Nutzer durch das System zusätzlich in ihrer Mobilität eingeschränkt. Demnach sollten zukünftige, intelligente Ladesysteme sorgfältig gestaltet werden, so dass der Aufwand und die Reduzierung von Flexibilität und Mobilität nicht so hoch sind, dass die Barriere "Reichweite und Laden" für die Akzeptanz von Elektrofahrzeugen erhöht wird.
Basierend auf den Ergebnissen wurden verschiedene Implikationen abgeleitet. Die Weiterentwicklung des Elektromobilitätssystems sollte sich darauf konzentrieren, die Barrieren bezüglich Reichweite und Laden zu reduzieren sowie die positiven Aspekte des elektrischen Fahrens zu vermitteln. Zudem sollten zukünftige Akzeptanzmodelle, vor allem für bisher eher unbekannte Objekte oder Technologien, einen Erfahrungsfaktor und die Bewertung verschiedener, objekt-/technologie-spezifischer Attribute enthalten, da dadurch wichtige Aspekte zur Verbesserung des Forschungsobjektes identifiziert werden können. Die Ergebnisse zeigten außerdem, dass der soziale Einfluss in zukünftigen Strategien zur Akzeptanzförderung von Elektrofahrzeugen adressiert werden sollte und eine Testfahrt mit einem Elektrofahrzeug, das dem aktuellen Entwicklungsstand entspricht, ein strategisches Werkzeug zur Akzeptanzsteigerung darstellt.
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