The amount of incoming solar energy to earth is greater than any other source. Among existing technologies to harness solar energy there is concentrating solar power (CSP). One advantage of CSP is that is dispatchable, meaning that it can provide power even when the sun is not shining. However, CSP is undergoing challenges which hinder its development such as operating variabilities caused by the fluctuations of the sun or the fact that these systems are not yet cost competitive with respect to other technologies.   One way of improving the performance of CSP plants (CSPPs) is by increasing their operational flexibility, specifically their capability for fast starts. In this way it is possible for the CSPP to harness the solar energy as soon as possible, thus producing more energy and increasing its profitability. Over 90% of CSPPs use a steam turbine to generate electricity. Steam turbines are not currently designed with the flexibility required by the CSP application. Steam turbine start-up is limited by thermal stress and differential expansion. If not carefully controlled, these phenomena either consume lifetime or even result in machine failure. The aim of this work was to understand the improvement potential of steam turbine start-up and quantify this in terms of CSPP performance indicators. For this, a thermo-mechanical steam turbine model was developed and validated. The model was then used to analyze potential improvements and thermal constraints to steam turbine start-up operation. Furthermore, a CSP plant techno-economic model was developed including steam turbine details. This modeling approach including two levels of detail allowed for the particularities of the component to be included within the dynamics of the plant and thus be able to connect the perspectives of the equipment manufacturer with those of the plant operator. Reductions of up to 11.4% in the cost of electricity were found in the studies carried out. / <p>QC 20170814</p>

M.Ed. (Adult Education) / To address the need for early childhood education in a small rural settlement in Gauteng, South Africa, a crèche was established by external development agents with corporate donor funding. Three untrained mothers from the community volunteered as lay practitioners at the crèche. An organic process of training of these teachers and of developing a curriculum ensued. From the challenges presented by and the tensions arising from this initial process the following research questions emerged: What is the process of developing an (organic) ECD curriculum with practitioner training in a rural community? and; What are the emerging tensions in such a process and how are they managed in Participatory Action Research (PAR) mode? A review of literature included aspects of early childhood education in South Africa and elsewhere and explored issues of community development, ECD and teacher development as well. Several examples of early childhood curriculum approaches from abroad and from Africa were compared and investigated for their possible relevance to the context of rural South Africa. The study was designed as a case and, because the situation at the site involved several stakeholders such as parents, development practitioners and the community committee, involved in a rural community development project, it predisposed the investigation to PAR as research design. Participation and collaboration between the researcher and all stakeholders through recurring cycles of planning, action and reflection distinguish the process of data collection of this inquiry. The perceptions and voices of the members of the community and the teachers form an integral part of this process. In-depth interviews with teachers, parents and the community leader; participant observation by the co-researcher, and documents and artefact collection were used as data collecting strategies. An inductive process of content analysis was employed during which the different data sets were first coded separately where after provisional categories were induced from the codes. The categories for the different data sets were then integrated and refined to themes. From these themes a pattern was identified from which the main findings of the inquiry were drawn. During the actual data collection process the researcher collaborated with a co-researcher who was also the teacher trainer. This collaboration served to address possible obstacles such as a language barrier and the challenges presented by the researcher‟s position as development practitioner. The participatory nature of this inquiry is further reiterated by the data sources that were selected. These include perceptions of different role players in the intervention, such as the teachers, parents, teacher-trainer, the development practitioners and community leader were elicited by means of some existing and some purposefully designed data sources. Because it was one of the main units of analysis for this study, the experiences of the teachers were explored in-depth over time and by means of data from several different data sources. Data from different sources were also integrated and the articulation of these different sources contributed to the validity of the study.

L’innovation et le contrôle de gestion sont tous deux considérés comme des déterminants de la performance des entreprises. Pourtant, ces deux concepts apparaissent à première vue comme antinomiques, et certains chercheurs les ont présentés comme difficilement conciliables, préconisant aux organisations innovantes d’avoir recours à d’autres modes de contrôle. La question du rôle et de l’influence du contrôle de gestion en contexte innovant se pose alors et motive ce travail doctoral. Au-delà de la littérature s’intéressant à l’influence du contrôle de gestion sur l’innovation, nous empruntons les cadres théoriques et conceptuels portant sur l’innovation managériale et l’ambidextrie organisationnelle afin de traiter de cette question du lien entre contrôle de gestion et innovation produit. La méthodologie retenue est de nature exploratoire, qualitative et adductive correspondant ainsi à un positionnement épistémologique de type interprétativiste. Elle consiste en une démarche en deux temps : une étude exploratoire auprès de dix-neuf start-ups et PME innovantes, puis deux études de cas de PME récemment inscrites dans une stratégie d’innovation. Les résultats de cette recherche montrent que, innovation et contrôle de gestion sont loin d’être antagonistes. D’abord, le contrôle de gestion, qu’il soit de type interactif ou cybernétique, apparaît comme favorable à l’innovation, mais l’innovation semble également impacter les systèmes de contrôle de gestion, en poussant les entreprises à mettre en place des outils de contrôle d’une part, des outils refaçonnés et adaptés d’autre part. Au final, on observe que l’innovation produit et l’innovation managériale se soutiennent mutuellement, mais également que le contrôle de gestion apparaît comme support d’ambidextrie contextuelle. Par ailleurs, cette étude souligne le rôle clé du dirigeant, en tant qu’acteur hybride ou ambidextre. / Innovation and management control are both considered as determinants of business performance. Yet, these two concepts appear at first sight contradictory, and some researchers have presented them as difficult to reconcile, advocating innovative organizations to have recourse to other modes of control. The issue of the role and influence of management control in innovative context arises and motivates this doctoral work.Beyond the literature concerned with the influence of management control on innovation, we use the theoretical and conceptual frameworks bearing on managerial innovation and organizational ambidexterity in order to deal with this issue of the link between management control and product innovation. The methodology is exploratory, qualitative and adductive corresponding thus to an interpretativist epistemological positioning. It consists of a two-stage approach : an exploratory study with nineteen start-ups and SMEs innovative and two case studies of SME which are both recently entered into an innovation strategy.The results of this research show that innovation and management control are far from being antagonistic. First, management control whether interactive or cybernetic type appears as favorable to innovation, but innovation also appears to impact the management control systems, pushing companies to develop tools of control on the one hand, tools which are reshaped and adapted on the other hand. Finally, we observe that product innovation and managerial innovation support each other, but also that management control appears as contextual ambidexterity support. Moreover, this study highlights the key role of the leader as hybrid or ambidextrous actor.

The purpose of this study was to find what appropriate Management Control Systems exist that can help fast-growing start-ups to achieve a controlled and healthy growth. We also studied how the control systems can be used together, and balanced between each other. To find appropriate control systems, we conducted a literature review of important factors for implementing management control, that ended with a tentative framework of control systems. After that, we conducted a multiple case study including several fast-growing technology start-ups to see how they use the collection of control systems in our tentative control framework, and analyzed what effect they have on the organization’s activities and how they balance between them. After the case study, a cross-case analysis was conducted were differences and similarities between the cases were analyzed and related to the theoretical concepts from the literature review. This led to conclusions regarding how start-ups tend to use and balance the control systems, which in turn led to the finalized control framework for fast-growing start-ups. The framework provides a set of control systems that start-ups can use that are relevant for supporting growth and managing the most common challenges that fast-growing start-ups face. By using different levers of control, the control systems complement each other and create a dynamic tension, which increases performance. For start-ups that are in a product development phase, the balance of the control systems is mostly on growth and innovation, which supports exploration of opportunities. However, there is still a little focus on control and efficiency to keep the organization focused. For start-ups with an already developed and commercialized product, the balance of control systems is more towards the middle. The most focus is put on growth and efficiency, with a little less emphasis on innovation and control. This is a way to keep an even balance between exploration of opportunities and exploitation of current resources.

A case study of a start-up company was performed. The study analysed the New Product Development Process at the start-up. The start-up under investigation was Zyray Wireless, a start-up in San Diego California. Zyray makes processors for the next generation of mobile phones. The research done with the particular start-up company will identify what the differences are between generally accepted best practise methods and the best practise methods implemented by a particular start-up company. The study will therefore aim to answer the following questions. How does the product development process change over the life cycle of the company? How do the best practise processes implemented in the industry differ from those implemented during the life cycle of the company under investigation. Why does the company implement best practise processes at a specific time in its life cycle and not during other times? What percentage of best practise processes are accepted and implemented by the company, why were they chosen and why were others not. Multiple types of evidence were used including participant observations, documentation and surveys. The survey taken at Zyray was compared with the industry averages. Results were also obtained at three different points in time (Concept/Seed, Product Development and Market phases). By comparing these results with the industry results it was possible to gauge the differences between the industry and Zyray Wireless in general. Zyray Wireless scored above the industry average in the following categories: continuous quality improvement, product success, project success, cycle time improvement, customer involvement questions, project selection, product strategy questions, technological leadership and product goal questions. The best practises for metrics, human resource development, documentation and change control implemented by Zyray Wireless scored at or below the industry average. The best practise results showed that the start-up focused more on strategy and engineering and less on process control. The study revealed the following important points: 1. In the initial phases the start-up’s customers were the venture funds. 2. The project selection process was informal but driven by economic criteria. 3. The company discovered that it had to choose a product strategy early on and then develop the product according to this strategy. 4. Marketing created the design concept but it also influenced the future of the company because it dictated the company’s product strategy. 5. The company followed a technology follower strategy. The technological competency was of such a high standard that a product was developed after very few iterations. 6. The start-up showed that internal documentation was limited but that external documentation to clients and manufacturers had to be of a high standard. 7. The company showed that change control was limited to the engineering function. 8. The start-up showed that over-achieving on goals set by itself and investors was of critical importance. 9. The start-up showed that process control was kept to a minimum and that it could react very quickly to changing situations. 10. The start-up showed that the establishment of a strong team is of critical importance to the success of the company. / Dissertation (MSc Technology Management)--University of Pretoria, 2007. / Graduate School of Technology Management (GSTM) / unrestricted

The GlueX experiment aims to study meson photoproduction while utilizing the coherent bremsstrahlung technique to produce a 9 GeV linearly polarized photon beam incident on a liquid $\mathrm{H_{2}}$ target. A Start Counter detector was fabricated to properly identify the accelerator electron beam buckets and to provide accurate timing information. The Start Counter detector was designed to operate at photon intensities of up to $\mathrm{10^{8}\gamma/s}$ in the coherent peak and provides a timing resolution $\mathrm{\sim 300\ ps}$ so as to provide successful identification of the electron beam buckets to within 99\% accuracy. Furthermore, the Start Counter detector provides excellent solid angle coverage, $\sim 90 \%\ \mathrm{of}\ 4 \pi\ \mathrm{hermeticity}$, and a high degree of segmentation for background rejection. It consists of a cylindrical array of 30 scintillators with pointed ends that bend towards the beam at the downstream end. Magnetic field insensitive silicon photomultiplier detectors were selected as the readout system. An initial measurement of the beam asymmetry $\Sigma$ in the exclusive reaction $\vec{\gamma}p \rightarrow \pi^{0}p$, where $\pi^{0} \rightarrow \gamma \gamma$ has been carried out utilizing the GlueX spectrometer during the Spring 2015 commissioning run. The tagged photon energies ranged from $2.5 \leq E_{\gamma} \leq 3.0\ \mathrm{GeV}$ in the coherent peak. These measurements were then compared to the world data set and show remarkable agreement with only two hours of physics production running.

The aim of the thesis is comparison of conditions for establishment and start of new enterprise at Slovakia and in Czech Republic. Comparison should answer the question if it is better to establish business at Slovakia or in Czech Republic. I compared economic conditions including gross domestic product, unemployment rate, inflation and interest rates. In following part of the thesis I compared tax rates and basic possibilities for entrepreneurs to obtain capital for the start of the business. In the end of the thesis I described process of establishing limited liability company in both countries.

Disruption innovation theory has been the zeitgeist for building globally disruptive tech companies since 1997. One decade later, disruptive tech start-ups are moving away from traditional marketing strategies in favour of growth hacking. There is a seemingly growing consensus by online tech experts, tech entrepreneurs, advisors and investors, that suggests that growth hacking is becoming increasingly important practice for disruption based tech start-ups. Furthermore, Sweden is becoming the Silicon Valley of the Nordics, producing more unicorns per capita than any other country in the world. This case study research is an investigation of the relevance and enactment of growth hacking by disruptive tech start-ups in Sweden. The main objective is to determine whether growth hacking is actually being used and how it is enacted by the start-ups. The goal is to explore how relevant this new term is, if it as popular as suggested in online literature and if so which growth hacks are being used. The study is conducted by carrying out a qualitative case study on five tech start-ups in Sweden: Fidesmo, a smart-chip payment system based on NFC technology that can be implanted into everyday objects such as watches, bracelets and cards, and that allows users to update and add new digital services as well as open doors or pay with a simple tap; TaskRunner, a geo-location based ‘help on demand’ platform that allows people to post ads for help with tasks while nearby task runners can bid to be hired to complete those tasks; Beleco, a unique marketplace for furniture rentals with a modern white-glove approach, that allows people to change or rent, rent-to-own or buy their furniture with the utmost ease; &amp;frankly, a continuous tracking application software that helps create happier and productive workspaces by triggering and measuring engagement and surveys between employees and employers in a non-hierarchical manner; and Wunderino; a Malta-based online casino platform started by Swedish entrepreneurs with the goal of taking the traditional pressures associated with gambling away and replacing it with an element of fun and gaming. Empirical data collection consisted of the interviews and observational study of their innovation on their platform or website. The results were interpreted and contextualized within the disruption innovation theory framework. The results of the study reveal that growth hacking is relevant to disruptive tech start-ups, and is becoming increasingly important to them as their companies develop. Additionally the study reveals that growth hacking occurs organically within these start-up structures, already integrated into their marketing and strategy, without a separate or official definition of the practices. Additionally, growth hacking may have initially been seen as lower cost approach to marketing, however the research reveals that it is not lower cost if there isn’t someone who is highly technical on the founding team. Finally, the results reveal that growth hacking is not fully operationalized or defined as growth hacking to the extent of its popularity online and in popular texts, however it does lay on the horizon as a goal for tech start-ups.

The present thesis focuses on founding and evolution of information technology startups. Special attention is given to the personality of the founder and the options of financing a startup in the Czech Republic. A survey among the students of the University of Economics, Prague regarding the general awareness of the issues related to the founding of a startup and the main obstacles to it is an integral part of the thesis. The main contribution of the thesis is a method for building up the IT startups, which may serve as a hand-book for potential future founders. As a secondary contribution, this thesis serves as a compact overview of the issues related to startups, especially to the person of the founder and financing possibilities in the Czech Republic.

The aim of the thesis is to find out whether it is possible to succeed on a design market with a new brand and with minimal financial resources. A Czech design startup Czevitrum is considered as model company in this situation. I focus on the development of Czevitrum's brand during the past two years mapping the brand's strategy on foreign markets and analyzing the product and its marketing communication. Based on the findings, I propose next steps for Czevitrum's brand building.