Particulate number (PN) standards in current and future emissions legislation pose a challenge for designers and calibrators during the warm-up phases of cold direct injection spark ignition (DISI) engines. To achieve catalyst light-off conditions in the shortest time, engine strategies are often employed that inherently use more fuel to attain higher exhaust temperatures. These can lead to the generation of locally fuel-rich regions within the combustion chamber and hence the formation and emission of particulates. To meet these emissions requirements, further understanding of the DISI in-cylinder processes during cold-start are required. This thesis investigates the effect of cooling an optical research engine to temperatures as low as -7°C, one of the legislative test conditions. A high-speed 9 kHz optical investigation of the in-cylinder combustion and fuel spray along with in-cylinder pressure measurements was completed with the engine motored and fired at 1500 rpm during combustion conditions that were essentially homogeneous and stoichiometric. Results showed significant differences between the flame growth structures at various operating temperature conditions with the notable presence of fuel-rich regions, which are understood to be prominent areas of particulate formation. Measured engine performance parameters such as indicated mean effective pressure (IMEP) and mass fraction burned (MFB) times correlated with the observed differences in combustion characteristics and flame growth speed. It was shown that flash boiling of the fuel spray was present in the fully heated engine case and significantly reduced the penetration of the spray plume and the likelihood of piston crown and cylinder liner impingement. The flow and combustion processes of a transient production cold start-up strategy were analysed using high-speed particle image velocimetry (HSPIV). Results highlighted a broad range of flame structures and contrasting flame stoichiometry occurring at different times in the start-up process. Turbulent flow structures were identified that have an effect on the fuel spray development and combustion process as well as providing a path for cold-start emissions reduction. PN and transient hydrocarbon (HC) emissions were measured at cold conditions to further elucidate the effect of operating temperature and correlate emissions data with in-cylinder measurements. A clear link between the quantity and size range of particulate and HC emissions and operating temperature was shown and the precise in-cylinder location of HC emissions, caused by fuel impingement, was inferred from the HC emissions data.

As emissões de poluentes atmosféricos decorrentes de veículos automotores representam um grave problema ambiental. O modo de operação do veículo influencia diretamente a quantidade de poluentes emitidos. Quando um veículo inicia sua operação com motor frio, efeito denominado de partida a frio, a quantidade de poluentes emitidos torna-se consideravelmente maior em comparação às condições estabilizadas de temperatura do motor. O efeito da partida a frio é bastante representativo em viagens de curta duração, como é o caso dos deslocamentos urbanos. Este estudo propõe um método para a determinação e distribuição espacial do adicional de emissões de poluentes em partida a frio. Este método foi aplicado em Porto Alegre, utilizando informações de tráfego e da frota local coletados na pesquisa de entrevistas domiciliares, realizada no ano de 2003. Os fatores de emissão utilizados embasaram-se em um estudo realizado com veículos brasileiros. Os resultados da aplicação do método indicaram que a maior parte das partidas a frio ocorre na região central de Porto Alegre e suas adjacências, sendo maior no período matinal. Observou-se também que os maiores responsáveis pelo adicional por partida a frio são os veículos equipados com conversores catalíticos e injeção eletrônica de combustível. Entretanto, os veículos mais antigos, sem conversor catalítico e equipados com carburador, são os maiores responsáveis pela emissão total, adicional por partida a frio e emissão estabilizada de CO e HC nos períodos analisados. Através do método proposto neste estudo foi possível identificar áreas críticas que necessitam de ações de controle de emissões em partida a frio. Os resultados deste estudo podem subsidiar o planejamento e gerenciamento das condições ambientais provocadas pelas emissões veiculares em áreas urbanas. / Atmospheric pollution from vehicle emissions is a serious environmental problem. The vehicle operation mode influences directly in the amount of emitted pollutants. When a vehicle begins its operation with the cold engine, called as cold start effect, the amount of emitted pollutant becomes considerably higher than when in stabilized conditions of engine’s temperature. Cold start effect are very representative in short travels, such as urban trips. This study proposes a method to estimate the amount and spacial distribution of the additional cold start pollutant emissions. This method was applied to Porto Alegre, Brazil, using traffic and local fleet data from a household travel survey of 2003. Emissions factors were based on a study of Brazilian fleet. The results from the method application showed that cold start emissions in Porto Alegre are higher in the morning peak and most of the cold start emissions are concentrated in the town center and its adjacencies. The results also showed that the catalyst fuel injection vehicles are the main responsible for the additional cold start emissions. However, old vehicles, without catalyst and equipped with carburetor, are the main responsible for the total, cold start and running emissions, CO and HC emissions in both analyses periods. Through the proposed method, it was possible to identify critical areas that need control actions of cold start emissions. The results from this study can assist planning and management of the environmental conditions deriving from vehicular emissions in urban areas.

Abstract Swedish start-ups seem to efficiently develop new products and services but less successful when it comes to taking them to the market and launching them globally. This research aims to address this gap through investigating Swedish start-ups. In light of this problem, the author argues that there is a need for increasing knowledge regarding the financial success factors and challenges facing Swedish start-ups in the go-to-market phase. The research question is thus: What are the significant challenges and success factors affecting the financing of Swedish start-ups during the go-to-market phase? Four major challenges facing start-ups during the go-to-market phase are identified. These are lack ofsufficient capital,lack of support from the banking sector, lack of support from the regional public leveland, finally, regulations and legal issues. On the other hand, four success factors have been identified, which are support from private investors, shared financial private/public risk, efficient internal operationsand non-traditional financing methods. In order to facilitate the go-to-market financing, it is recommended that start-ups be established in a business incubator environment in order to have access to investor networks and other financial support. Besides, having investors with financial experience in the start-up boards increases the chances of success in the go-to-market phase. The banking sector in Sweden should also play a bigger role in the strategic issues in order to accelerate the start-up’s growth. For further studies, more knowledge regarding the underlying motivations of private capitalists, public funders and loan lenders is desirable. Furthermore, the business incubator’s role in facilitating the financing of start-ups and understanding how start-ups in different sectors should act to increase the rate of success are two important areas for future studies.  Keywords: start-ups, go-to-market, financing, growth, early growth, success factors

This thesis examines what impact digitalization can have on the trustworthiness of the leader through the lens of managers and employees in Dutch start-ups. The study explores the intersection set of trust, leadership and digitalization. As there was no prior research on the research issue at hand, a model that incorporated a process of trust and its interaction with digitalization has been constructed by the authors. The model relied on previous research on models of the trust process and characteristics of digitalization in the light of leadership. First a theoretical framework is built through a literature survey. A qualitative inquiry through interviews was carried out in order to be able to analyze the trustworthiness of the leader. The objective of the authors during the research was to document how leaders and followers perceived a trustee (leader) in a trust process with digitalization involved. The analysis revealed that even though digitalization has pervaded our lives; its impact on the trustworthiness of the leader has remained limited so far. Empirical data from this research indicated that the impact of digitalization on the three attributes of trustworthiness of the trustee was the strongest: objectives and intentions, competence and integrity. There were also digitalization related implications that could be drawn from the accounts of the interviewees. Thesis findings contribute to a better understanding of the role of the leader in a trust process in digitalized organizational environments and encourage further research in the field of trust especially when digital technologies have become so pervasive in the work life.

Traditional investment practices have been revamped with more and more modern methodsto fit entrepreneurial settings. The evolution of equity crowdfunding has created an alternative to venture capital,bank loans and business angels. Due its novelty, recent studieshave onlyfocusedon its mechanisms and financial regulations. We draw from crowdfunding concept and social theories to develop an understandingonthe connection between social media networkand equity crowdfunding success.Utilizingdata from LinkedIn and a leading equity crowdfunding platform in the Nordics, we explore the impact of social media network to funding campaigns’ success. We collected data on every company on the platform, and we collected data on the key members’ LinkedIn connections. The results propose that it is possible to predict certain types of success in equity crowdfunding based on the number of LinkedIn connections. This study contributes to existing literature by providing better understanding on another social network, LinkedIn, which is often connected to project pages on crowdfunding platforms. We contribute even for improved insight in decision making processes behind the investments; which is in high interest of entrepreneurs, investors and platforms

This thesis is about entrepreneurial leadership and how entrepreneurs are affected by social media. Our aim with this study is to investigate how social media affects entrepreneurial leadership. One of the main questions we are trying to figure out is, can social media be used as a tool for entrepreneurial leadership and if that is the case, how? To be able to answer the aim, the thesis takes a qualitative researched approach, we conducted individual face-to-face semi-structured interviews with entrepreneurs. The data from the interviews will be analysed using grounded theory coding with the approach of finding 1st order concepts to look for patterns in the data.  The 1st order concepts led us to the 2nd ordered themes, which became three aggregated dimensions; cast expander, leadership enhancer and new social context.   The result gave us a deeper understanding of entrepreneurial leadership and how the entrepreneurial leader perceives social media as a leadership tool. By combining our three aggregate dimensions, cast expander, leadership enhancer and new social context we were able to build a model of how these three dimensions intersect. What makes this model useful is that it gives us some insight into how social media affects entrepreneurial leadership

The diploma thesis is focused on coworking, creative and innovative centres in Brno and their importance for the development of the city. The aim is to describe the current state of these centres, then to analyze their impact on the development of the city and determine their contribution to potential users. The first part deals with the definition of basic business concepts and business environment in Czech republic and is also dedicated to the importance of innovation and creativity within organization. It also discusses the historical development of coworking, creative and innovative centres in Brno and Czech republic, their definitions with paying attention on the vision and values of the entities, principles of their functioning, then showing and examples of realized projects and benefits. The practical part is devoted to the actual quantitative and qualitative research, evaluation and formulation of the final recommendations, which are focused not only on the further development of these centres, but also to established deeper cooperation with the city administration, so that there is a synergic growth between city and its inhabitants.

Diploma thesis is focused on an analysis of venture capital financing support in the Czech Republic and European Union. The first part of the thesis is dedicated to defining terms related to venture capital financing,an impact analysis of venture capital on the state economy and an analysis of current situation in the venture capital market of European Union. Afterwards typology of the states of European Union according the activity on venture capital markets and comparison of the Czech Republic with selected countries are accomplished. Based on analysis results conclusions and recommendations are proposed in order to improve the situation in the Czech Republic and European Union.

As emissões de poluentes atmosféricos decorrentes de veículos automotores representam um grave problema ambiental. O modo de operação do veículo influencia diretamente a quantidade de poluentes emitidos. Quando um veículo inicia sua operação com motor frio, efeito denominado de partida a frio, a quantidade de poluentes emitidos torna-se consideravelmente maior em comparação às condições estabilizadas de temperatura do motor. O efeito da partida a frio é bastante representativo em viagens de curta duração, como é o caso dos deslocamentos urbanos. Este estudo propõe um método para a determinação e distribuição espacial do adicional de emissões de poluentes em partida a frio. Este método foi aplicado em Porto Alegre, utilizando informações de tráfego e da frota local coletados na pesquisa de entrevistas domiciliares, realizada no ano de 2003. Os fatores de emissão utilizados embasaram-se em um estudo realizado com veículos brasileiros. Os resultados da aplicação do método indicaram que a maior parte das partidas a frio ocorre na região central de Porto Alegre e suas adjacências, sendo maior no período matinal. Observou-se também que os maiores responsáveis pelo adicional por partida a frio são os veículos equipados com conversores catalíticos e injeção eletrônica de combustível. Entretanto, os veículos mais antigos, sem conversor catalítico e equipados com carburador, são os maiores responsáveis pela emissão total, adicional por partida a frio e emissão estabilizada de CO e HC nos períodos analisados. Através do método proposto neste estudo foi possível identificar áreas críticas que necessitam de ações de controle de emissões em partida a frio. Os resultados deste estudo podem subsidiar o planejamento e gerenciamento das condições ambientais provocadas pelas emissões veiculares em áreas urbanas. / Atmospheric pollution from vehicle emissions is a serious environmental problem. The vehicle operation mode influences directly in the amount of emitted pollutants. When a vehicle begins its operation with the cold engine, called as cold start effect, the amount of emitted pollutant becomes considerably higher than when in stabilized conditions of engine’s temperature. Cold start effect are very representative in short travels, such as urban trips. This study proposes a method to estimate the amount and spacial distribution of the additional cold start pollutant emissions. This method was applied to Porto Alegre, Brazil, using traffic and local fleet data from a household travel survey of 2003. Emissions factors were based on a study of Brazilian fleet. The results from the method application showed that cold start emissions in Porto Alegre are higher in the morning peak and most of the cold start emissions are concentrated in the town center and its adjacencies. The results also showed that the catalyst fuel injection vehicles are the main responsible for the additional cold start emissions. However, old vehicles, without catalyst and equipped with carburetor, are the main responsible for the total, cold start and running emissions, CO and HC emissions in both analyses periods. Through the proposed method, it was possible to identify critical areas that need control actions of cold start emissions. The results from this study can assist planning and management of the environmental conditions deriving from vehicular emissions in urban areas.

Submitted by Octhavio Martins (octhavio@gmail.com) on 2016-01-11T19:39:24Z No. of bitstreams: 1 MPGI Thesis - Octhavio Martins - jan2016.pdf: 689522 bytes, checksum: 94a3d686879f99f8dc15466021b9d2ff (MD5) / Approved for entry into archive by Ana Luiza Holme (ana.holme@fgv.br) on 2016-01-11T19:43:58Z (GMT) No. of bitstreams: 1 MPGI Thesis - Octhavio Martins - jan2016.pdf: 689522 bytes, checksum: 94a3d686879f99f8dc15466021b9d2ff (MD5) / Made available in DSpace on 2016-01-12T11:41:17Z (GMT). No. of bitstreams: 1 MPGI Thesis - Octhavio Martins - jan2016.pdf: 689522 bytes, checksum: 94a3d686879f99f8dc15466021b9d2ff (MD5) Previous issue date: 2015-12-17 / O fenômeno das empresas born globals e a internacionalização de empresas brasileiras de base tecnológica são tópicos recentes na literatura acadêmica, devido também ao fenômeno ser recente. Não existem muitos estudados feitos com foco no mercado brasileiro, e os poucos que foram feitos, possuem um viés quantitativo. Esse estudo, entretanto, tem como objetivo analisar startups de maneira qualitativa. Uma extensa revisão de literatura foi desenvolvida a fim de melhor analisar as fundações nas quais o estudo seria desenvolvido, revisando os métodos de internacionalização, empreendedorismo no Brasil, e o fenômeno born global no geral. Entrevistas foram conduzidas com empreendedores no Brasil, que passaram pelo processo de internacionalização de seus modelos de negócios, a fim de reunir introspecções a respeito das peculiaridades do mercado brasileiro. Foram também analisados os fatores de escalabilidade de modelos de negócios dependentes de tecnologia, motivadores para a internacionalização, critério de seleção de mercados, programas governamentais, e o papel das startups brasileiras em uma perspectiva global. / The born-global phenomenon and the internationalization of Brazilian technology-based start-ups are very recent topics in the academic literature due to the phenomenon itself also being relatively recent. Not many studies have been made focusing on the Brazilian market, and the few ones that do focus on Brazil, have been made from a quantitative perspective. This study, on the other hand, aims to analyze start-ups qualitatively. An extensive literature review was developed to better analyze the foundations on which the study would be built on, reviewing internationalization methods, entrepreneurship in Brazil, and the born-global phenomenon in general. In addition, interviews were conducted with entrepreneurs in Brazil who have been through internationalizing their business models, in order to gather in-depth insights regarding the nuances of the Brazilian reality. The scalability of technology-dependent business models, internationalization triggers, criteria for selecting target markets, governmental programs, and the role of Brazilian start-ups in a global perspective, were also factors analyzed.