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- Kachlami, Habib M.
(författare)
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Social Entrepreneurship and Influence on Regional Firm Demography
- 2017
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- The central interest of this thesis is the emergence of social ventures. In this regard, it investigates two types of questions: what regional factors influence the emergence of social ventures? and what types of interaction may emerge between the emergence of social ventures and the demography (entry, exit and migration) of commercial ventures in a region? The thesis also aims to adopt a macro-oriented approach to studying the research questions.To answer those questions, this thesis applies both theoretical and empirical analysis. For the theoretical analysis, instead of a single theory it applies three middle-range theories: theory of organisational ecology, market failure theory, and the demand and supply theory of entrepreneurship. The empirical analysis is based on two large-scale databases from Sweden and the U.S. The Swedish database includes nonprofit social ventures and commercial ventures for the 1990-2014 period from all of the 290 municipalities across Sweden, while the database from U.S. includes 88 counties in the State of Ohio between 2003-2007.The answers to the research questions are presented in the form of six papers. Paper 1 provides an overall picture of the different possible functions of social ventures within communities and their contributions to regional development. With this overall view, Papers 2 and 3 answer the first research question, that is the factors influencing the emergence of social ventures. Thus, while Paper 2 provides a review of previous research, Paper 3 empirically examines some of the regional factors that may influence the emergence of social ventures in a region. The results of Paper 3 revealed that factors such as gender, education, entrepreneurial role models, wealth, unemployment rate, age, and urbanisation positively influence the emergence rate of the of social venture in a region.Papers 4, 5 and 6 are dedicated to answering the second type of research question, in other words the interaction between the emergence of social ventures and the demography (entry, exit and migration) of commercial ventures. As such, Paper 4 studies how the emergence of social ventures is influenced by the entry and exit of commercial ventures, Paper 5 investigates how the emergence of social ventures influences the entry of commercial ixventures, and Paper 6 examines how the emergence of social ventures influences the migration of commercial ventures. In summary, the results of these three papers reveal that while the emergence of social ventures negatively influences the commercial ventures inside a region, it has a positive influence on the commercial ventures outside the region. Paper 6 further investigates the influence of the emergence of commercial ventures on the migration of commercial ventures. The results show that while the emergence of social ventures attracts commercial ventures from outside into a region, the emergence of commercial ventures repels them from moving into the region.
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| 2. |
- Lindh, Ida, 1981-
(författare)
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An Entrepreneurial Mindset : Self-Regulating Mechanisms for Goal Attainment
- 2017
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Comprised of a cover story and five separate but interrelated articles, this dissertation explores entrepreneurial learning. By connecting multiple theoretical perspectives, reviewing extant literature, using four qualitative datasets, and building theory inductively, the articles explain components to and mechanisms of entrepreneurial learning. This dissertation is one of the first to explore the essence of entrepreneurial learning by incorporating non-entrepreneurs and entrepreneurs simultaneously, cognitive processes, and contextual variables. Learning lies at the core of entrepreneurship, and scholars have even argued that a theory of entrepreneurship requires a theory of learning. The literature suggests that experiences in the context of entrepreneurship triggers entrepreneurial learning, and that such learning relates to achieving ambitious goals, the discovery of new opportunities and better overall performance. Entrepreneurial learning has also been highlighted in contexts outside entrepreneurship and as a mean to fostering future entrepreneurs and developing people’s entrepreneurial attributes and characteristics. The idea is that entrepreneurship is a way of thinking and acting and that entrepreneurial learning can be of use to anyone, even to those lacking entrepreneurial experience.Entrepreneurial learning literature, both inside and outside the context of entrepreneurship, emphasizes triggers of entrepreneurial learning, but does not recognize components that enable those triggers to be recognized and acted on and the underlying mechanisms that distinguish entrepreneurial learning from other types of learning. This gap makes it difficult to assess what entrepreneurial learning is and how it can be enhanced for both entrepreneurs and people preparing for entrepreneurship. This dissertation explains how and why entrepreneurial learning can be understood as a simultaneous and active regulation of cognition, motivation, and emotions to achieve goals. This elaboration captures core components and the mechanism of entrepreneurial learning, and illustrates how it can be understood and enhanced in various contexts.
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| 3. |
- Hai, Ling
(författare)
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Hydrodynamic Modelling of Wave Power using Electrical Equivalent Circuit Theory
- 2014
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Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Ocean wave energy can be harnessed and converted into electric energy nowadays. This provides a possibility for populations that live on islands or along coastlines to utilize the renewable and safe power produced by ocean waves. Point absorbing wave energy converter (WEC) is one example of such devices for electrical power production from ocean waves. It is composed of a floating buoy on the water surface, and a linear generator that sits on seabed and is connected with the buoy via a line. Electricity is generated when the buoy moves up and down in the waves.The geometry and dimensions of the floating buoy have dominant influences on the energy absorption. This thesis introduces an equivalent electric circuit for modelling the hydrodynamic interaction between the wave and a cylindrical buoy. The model allows a rapid assessment of the velocity, force in the connection line and output power, by which the system design and optimization can be performed faster and easier.The electric circuit model is based on the WEC's dynamic force analysis, and the electric components' parameters are determined from analytical approximations of the hydrodynamic coefficients. The simulation results of the equivalent circuit for one typical wave climate in Lysekil has been presented, and the results indicate a good fitting with former experimental results.The thesis also includes a hydrodynamic study for a torus shaped buoy, which aims at applying a theoretical background for a force measurement experiment. A comparison has been conducted between the torus buoy and two similar cylindrical buoys. Preliminary WAMIT simulation results demonstrate that the force in the connection line will be 5% bigger by using the torus buoy. It is also found that the torus buoy is advantageous for its larger excitation force and smaller added mass. A brief introduction of the 500kN force measurement system and the communication test have been introduced as well.
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| 4. |
- Larsson, Anton, 1994-
(författare)
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Landslide Archaeology : Past hazards and disasters in the Göta River Valley and beyond
- 2023
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Exploring the impact of landslides on past human communities, their landscapes, and their material remains, this thesis focuses on the most landslide-prone region of Sweden: the Göta River Valley (Sw. Göta älvdalen). It is argued that through a multi-source methodology and by employing ideas concerning geoculturality and disasterscapes, we can begin to approach the lived experiences of both distant and recent history. The thesis further outlines the risk posed by landslides to cultural heritage and archaeological sites, a threat significantly exacerbated by ongoing processes of anthropogenic climate change. This compilation thesis contributes to the study of past hazards and disasters with relevance on both regional, national, and international levels. The comprehensive summary of the thesis provides both an overview of the field and an in-depth study of how landslides have been perceived and interacted with throughout time. Additionally, five research papers, each dealing with different aspects of landslide archaeology within Western Sweden from prehistory into the present day, address separate aspects of landslide archaeology.The first paper presents new dating evidence for the Late Iron Age trading site of Köpingen and, in turn, uses these results to provide a minimum age for a prehistoric landslide on the same site. The second paper outlines the research history of the great medieval landslide at Jordfallet, employing archival studies and legacy data to reassess its traditional dating. Most likely, the event occurred in the year 1249 AD, a conclusion with relevance for Scandinavian geopolitics in the Middle Ages. The third and fourth papers are historical-archaeological studies of two Early Modern disasters, the 1648 Intagan and 1703 Skrehall landslides, respectively, providing new understandings of these events. In the case of the former landslide, it is found to have left few easily identifiable archaeological traces behind, while newly discovered remains are described at the latter site. The fifth and final paper examines major landslides across Western Sweden in the 20th and 21st centuries, showing that several of these have destroyed archaeological sites, while others have prompted archaeologists to conduct emergency fieldwork. This illustrates the risks posed by landsliding in the region and emphasizes the need for cohesive contingency planning within the cultural heritage management sector.
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