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Matejko, Filip. "Současné UAS a možnosti jejich aplikace do komerčního prostoru v Evropě." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231643.
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The work contains a brief overview of some modern unmanned aerial systems and later their capabilities of integration into controlled airspace in Europe. It discusses the current legislation dealing with different areas of integration of UAS and the update and developing process of legislation. Another section deals with the exploration of the possibilities of using unmanned aircraft in the commercial sector and their impact on the existing air transportation. The last section is devoted to the technical aspects associated with the integration of UAS into controlled areas. It describes the current systems of the CNS and their possible development in conjunction with UAVs and also a significant part of the work is devoted to the technology of the S&A (Sense and Avoid). During the entire work is gradually evaluate the current situation of the operation of UAS and are designed and recommended necessary changes that will need to be perform to their successful integration into the controlled airspace.
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Safaieh, Mehrdad. "STEP-NC enabled cross-technology interoperability for CNC machining." Thesis, University of Bath, 2014. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.619222.
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In recent decades there has been a rapid development of technology in manufacturing industries, in particular through the increasing use of ever more powerful and sophisticated Computer Numerical Controlled (CNC) machines to manufacture complex parts. These machines are supported by a chain of computer based software solutions amongst which manufacturing information is exchanged. With the need for information exchange, interoperability between various computer-aided systems (CAx) has become an important research area. In CNC part programing, innovations by various hardware manufacturers and their reflection in their software have led to the necessity for the existence of different part programs for each machine. Creating these is a time consuming and economically inefficient activity. Implementing genuine interoperability between CNC machines is a way of eliminating this deficiency but, to achieve this, CNC programmers must be able to write a CNC program for a specific machine and effortlessly convert that program to work for other machines. The aim of this research was to enable the exchange of CNC programmes across machines with different technologies and demonstrate this between a C-axis CNC turn-mill machine and a 4-axis CNC machining centre. This has been achieved by designing a cross-technology interoperability framework that is capable of supporting systems that can work with the different types of CNC machines. This framework is the core contribution to knowledge from this PhD research. In order to fully identify the context for the research, this thesis presents a review of existing literature on machining of turn-mill parts and interoperability for CNC manufacturing. This is followed by the specification and realisation of a novel framework for cross-technology interoperability for CNC manufacturing. The demonstration is conducted using test components that can be manufactured using different CNC technologies.
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Hulvej, Matúš. "Návrh výrobní technologie ozubeného hřídele převodovky." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2018. http://www.nusl.cz/ntk/nusl-378867.
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The diploma thesis presents a design of a technical project: design of production technology for a pinion shaft of a gearbox and design of alternative technology. It focuses on the analysis of a component, the selection of materials, machines and tools, and the creation of a manufacturing drawing and technological process of the production. It is concluded by a technical-economic evaluation, based on which are both designs compared and evaluated which design is better for specific conditions.
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Hibberd, Martin Sidney. "The technology and structure of the British wood furniture industry." Thesis, University of Sussex, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.323015.
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Radhakrishnan, Venkataraman. "Design of a low power analog to digital converter in a 130nmCMOS technology." Thesis, Linköpings universitet, Elektroniksystem, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-72700.
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Communication technology has become indispensable in a modernsociety. Its importance is growing day by day. One of the main reasonsbehind this growth is the advancement in the analog and mixed signalcircuit design.Analog to digital converter (ADC) is an essential part in a modernreceiver system. Its development is driven by the progress of CMOStechnologies with an aim to reduce area and power consumption. In thearea of RF integrated circuits for wireless application low operationalvoltage, and less current consumption are the central aspects of thedesign. The aim of this master thesis is the development and design ofa low-power analog to digital converter for RF applications.The basic specifications are:· High Speed, Low Current (1.5 V supply voltage)· Maximum input frequency 3.5 MHz· 8-bit resolution· Sampling rate < 100 MHzThus, this work comprises a theoretical concept phase in whichdifferent ADC topologies will be investigated. Based on which anappropriate ADC architecture will be fixed. Later, the chosen design willbe implemented in an industrial 130 nm CMOS process.
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Eide, Jan. "Rethinking CCS - strategies for technology development in times of uncertainty." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/81119.
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Thesis (S.M. in Technology and Policy)--Massachusetts Institute of Technology, Engineering Systems Division, 2013.Cataloged from PDF version of thesis.
Includes bibliographical references (p. 115-119).
Concerns over climate change and a reliance on CO₂-emitting fossil fuels for a majority of the world's energy supply have motivated the development of carbon dioxide capture and storage (CCS). However, CCS is not yet commercially available, and key technical roadblocks remain. However, the external circumstances for developing the technology, such as weak climate policy and tight public finances, have changed dramatically over the past four years and current RD&D roadmaps are poorly adapted to the new realities. In order to rethink U.S. CCS policy, and to provide a realistic roadmap for technology development, this thesis provides an overview of the key technical roadblocks, an analysis of the impact of the new realities on CCS investments, and a novel method for finding the optimal way of allocating scarce public resources to CCS RD&D. The U.S. has responded to the changing political context in two notable ways. First, Enhanced Oil Recovery (EOR) has received increased attention due to the positive value that EOR storage puts on CO₂. Second, the EPA has proposed a 1000 lbs CO₂/MWh emission standard that would require new coal plants to install CCS. Using a stochastic generation expansion model, this thesis concludes that low natural gas prices make fuel switching rather than CCS investment the most likely compliance method. Moreover, should these standards be gradually tightened, CCS will likely be deployed on natural gas plants before coal plants. More generally, the model highlights the importance of considering uncertainty when analyzing CCS investments, and results differ notably depending on whether probability distributions over parameters are considered or not. With limited funds available for technology development there is a striking need to ensure that limited resources are allocated strategically. Whereas designing optimal technology RD&D portfolios has traditionally been dealt with qualitatively, this thesis develops a quantitative model for choosing optimal portfolios of demonstration projects. The strength of new model is how it incorporates the different uncertainties associated with CCS, allowing decision makers to observe how different underlying assumptions affect project choices. Based on my analyses, I make six recommendations for CCS technology development in times of uncertainty, many of which are major departures from current U.S. CCS policy. First, the U.S. should focus more on pilot-scale development of novel capture concepts promising to significantly reduce cost. Second, if gradually tightening emission standards is to be the primary mechanism to reduce power sector CO2 emissions, then the U.S. should also demonstrate CCS on natural gas plants. Third, granting a limited number of coal plants a higher CO₂ emission standard could help bring CCS plants online in challenging times. Fourth, relying almost exclusively on projects with EOR storage is unlikely to be a sound long-term policy. Because of the significant variability across geologic storage reservoirs, at least some demonstration projects must focus on CO₂ storage in saline formations. Finally, with tightening public finances it becomes increasingly important to coordinate demonstration efforts globally to avoid unproductive overlap.
by Jan Eide.
S.M.in Technology and Policy
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Hau, Chuan-Shou. "Perspectives of computerized numerical control (CNC) machinists on the tasks of CNC machining technology in Taiwan /." The Ohio State University, 1995. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487863429095404.
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Novotný, Michal. "Technologie CNC výroby součásti z hliníkové slitiny." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231248.
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The diploma thesis Technology of CNC production of aluminium alloy part is based on the particular specification of the company FP cz s.r.o. The core of the work lies in the proposal of production technology of the given part made from aluminium alloy which is machined by two universal CNC lathes with operating system FANUC. There is an introduction to the issue of characteristics and machinability of aluminium and its alloys because of coherence of the thesis. Practical part is focusing on the particular proposal of production technology which consists of the casting analysis, method of clamping on the chosen machines, choice of tools and verification of the production. There can be achieved effective production and significant time reduction with proposed technology.
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Karohs, Karoline. "A sustainable technology? : How citizen movements in Germany frame CCS and how this relates to sustainability." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-200577.
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Carbon capture and storage (CCS) is a technology that is developed with the aim of decreasing the emissions of the greenhouse gas carbon dioxide (CO2) in order to mitigate global climate change. However, citizens strongly oppose the technology in areas where carbon storages are supposed to be constructed. With the help of framing theory, this work analyzes four German anti-CCS citizens’ initiatives. Qualitatively studying publicly available material from their websites, their diagnostic, prognostic, and motivational frames on the issue are reconstructed. Guided by a first research question about what frames on CCS are constructed by the citizens’ initiatives, the frames are then compared to each other, showing that political opportunity structures as well as local factors regarding particularly the prevalent type of energy production are taken up to some extent. Systematically retracing the arguments, this study aims on investigating into the connections between local and global issues and interests around CCS. This entails potential for generalization regarding the decision-making process in the area of conflict when society, environment, technology, economic and political actors are involved. Afterwards, a second research question is taken up – the frames’ relation to sustainability. They are discussed in the wider context of sustainable development because of the close connection between the climate change and the sustainability discourse. Moreover, proponents as well as opponents use parts of the sustainability concept for their arguments. This highlights the difficulties of a sustainable decision-making process in which a variety of interests are interwoven and partly contradicting each other. It is concluded that both, comprehensive information and transparent communication, between all actors are the first steps towards a more sustainable decision-making process but that structurally as well as technically more than this is required, especially regarding the acceptance of the outcome. Research on sustainability as an increasingly influential paradigm can pave the way in this regard.
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Meagher, Michael. "The processes of learning in a computer algebra system (CAS) environment for college students learning calculus." Connect to resource, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1124113975.
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Thesis (Ph. D.)--Ohio State University, 2005.Title from first page of PDF file. Document formatted into pages; contains xiii, 204 p.; also includes graphics (some col.). Includes bibliographical references (p. 198-204). Available online via OhioLINK's ETD Center
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Ingvarsdóttir, Anna. "Comparison of direct air capture technology to point source CO2 capture in Iceland." Thesis, KTH, Kemiteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-289164.
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Det är välkänt att klimatförändringar på grund av global uppvärmning är en av de största kriserna som hotar jorden. Det är en enorm utmaning för mänskligheten att minska koldioxidutsläppen, den främsta orsaken till global uppvärmning. Enkelt genomförbara åtgärder är inte tillräckliga och teknik för att ta bort koldioxid från atmosfären anses nödvändig för att temperaturökningen inte ska överstiga de 1,5 °C som anges i Parisavtalet. Direkt infångning av koldioxid från luft (vanligen kallad direkt luftinfångning, (Eng. Direct air capture - DAC)) är en ny teknik som kan ta bort koldioxid direkt från atmosfären. För närvarande är denna metod dyr; upp till 1000 USD per ton avlägsnad koldioxid. Denna höga kostnad beror främst på den relativt låga koldioxidkoncentrationen i luften, vilket leder till att en stor anläggning behövs för att fånga upp gasen och därmed stora investeringar. Tekniken är mycket energiintensiv, antingen elektrisk eller termisk, och för att göra en direkt infångning effektivare, måste anläggningen drivas med energi som inte har några eller mycket låga koldioxidutsläpp. Energin på Island är billig och dess produktion innebär ett mycket lågt koldioxidavtryck. Syftet med arbetet i denna avhandling är att utforska om metoden för direkt infångning av koldioxid från luft kommer att vara en mer genomförbar metod än koldioxidinfångning från punktkällor (eng. point source - PS) på Island på grund av god tillgång till billig och ren energi. Lärandekurvan för direkt luftfångning studerades tillsammans med scenarier för metodens tekniska utveckling. Tre olika fall med punktkällor på Island studerades för jämförelse. Två olika direkta luftinfångningstekniker analyserades också, en som drivs av en stor mängd elektricitet och en som drivs mestadels av termisk energi. Det resulterade i att i bästa fall, där inlärningshastigheten är hög och tekniska förbättringar är signifikanta, så skulle produktionskostnaden för direkt luftinfångning (levelized cost of energy, LCOC) vara lägre än motsvarande för infångning från en punktkälla. Energikostnaden påverkar LCOC för DAC idag men med teknisk utveckling förväntas energibehovet minska och därför kommer energikostnadens påverkan att bli lägre. Det är dock fortfarande viktigt, med tanke på bidraget till att minska globala uppvärmningen, att energin som driver DAC-anläggningen har ett lågt koldioxidavtryck, vilket kan garanteras på Island. Tvärtom, om inlärningshastigheten för DAC-tekniken är låg och inga tekniska förbättringar sker i lösningsmedel eller sorbenter, är och kommer DAC-tekniken att bli dyrare än infångning från punktkällor om båda anläggningarna finns på Island. En hög inlärningshastighet och teknikutveckling är beroende av trycket att nå målen i Parisavtalet. Det är därför mycket viktigt för DAC att efterfrågan på koldioxidinfångning ökar. Dessutom har DAC mer potential att påverka klimatförändringarna eftersom DAC kan vara en kolnegativ teknik om den kombineras med permanent lagring av koldioxid. PS-avskiljningen kan endast vara en kolneutral teknik och detta om den kombineras med permanent lagring av koldioxid.It is well known that climate change due to global warming is one of the greatest crises facing the Earth. It is a huge challenge for mankind to reduce CO2 emissions, the major cause of global warming. Mitigation measures are not enough. Technologies to remove the CO2 from the atmosphere are considered necessary, so the temperature rise does not exceed 1.5°C as stated in the Paris Agreement. Direct air capture (DAC) is a new technology that can remove carbon dioxide directly from the atmosphere. Currently, this method is expensive, up to 1000 USD per ton CO2 removed. This high cost is mostly due to the relatively low concentration of CO2 in the ambient air, leading to a large unit to capture the gas and therefore high capital investment. The technology is very energy-intensive, either electrical or thermal, and to make direct air capture more efficient the plant needs to be powered with energy that has no or very low CO2 emissions. The energy in Iceland is low cost and its production has a very low carbon footprint. This thesis aims to find out if the direct air capture method will be more feasible than a point source CO2 capture in Iceland due to good access to low-cost and clean energy. The learning curve for direct air capture was studied along with scenarios for its technological development. Two different direct air capture technologies were analyzed, one that is powered by a large amount of electricity and one powered mostly by thermal energy. Three different point source cases in Iceland were studied for comparison. For the best-case scenario, where the learning rate is high and technological improvements are significant, the levelized cost of direct air capture is lower than levelized cost of point source capture. The cost of energy affects the levelized cost of direct air capture today but with technical development, the energy needed is expected to go down, and therefore the effect of energy cost will be lower. However, it is still important, concerning contribution to reducing global warming, that the energy powering the direct air capture plant has a low carbon footprint, which can be assured in Iceland. On the contrary, if the learning rate of the direct air capture technology is low and no technical improvements occur in solvents or sorbents the direct air capture technology is and will be more expensive than point source capture considering both located in Iceland. The high learning rate and development in technology are dependent on the pressure to reach the goals of the Paris Agreement. It is therefore vital for direct air capture that the demand for carbon removal measures is enhanced due to pressure to reach the Paris Agreement goals. Furthermore, direct air capture has more potential to affect climate change than point source capture as direct air capture can be a carbon-negative technology if coupled with the permanent storage of CO2. The point source capture can only be a carbon-neutral technology if coupled with the permanent storage of CO2.
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Kapila, Rudra Vidhumani. "International politics of low carbon technology development : carbon capture and storage (CCS) in India." Thesis, University of Edinburgh, 2015. http://hdl.handle.net/1842/11686.
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This thesis explores the international political dynamics of developing low carbon technology. Specifically, Carbon Capture and Storage (CCS) technology as a climate mitigation strategy in a developing country context is examined. CCS is a technological solution that allows for the continued use of fossil fuels without the large amounts of associated CO2 emissions. This entails capturing the CO2 emitted from large point sources, such as a coal-fired power station, and transporting the captured emissions to be injected and stored permanently into geological media. Consequently, CCS is a bridging technology that could provide more time for transitioning to a low-carbon economy. A case study of India is used, which is an emerging industrialising economy, and is also the third-largest coal producer in the world. India faces a dilemma: poverty alleviation and infrastructure development to support its billion plus population requires vast amounts of energy, which is predominantly based on fossil fuels. Therefore, it was envisioned that CCS would be a sustainable option, which could enable industrialisation at the rate required, whilst preventing the exacerbation of the negative effects of climate change. However, during the period of study (2007-2010), CCS was not embraced by India, despite there being a growing impetus to develop, demonstrate and transfer the technology. India was reluctant to consider CCS as part of a mitigation strategy, and this thesis focuses on the reasons why. An interdisciplinary approach is used, coupling perspectives from science, technology and innovation studies (STS) with concepts from International Relations (IR) scholarship. This sociotechnical conceptual framework is applied to gain a more holistic picture of the failed attempt to transfer CCS technology to India. Key technical challenges and blockages are identified within India’s existing energy system, which have restricted CCS technology implementation. In addition, the political challenges associated with the rejection of CCS by the Indian Government are explored. Empirical evidence is on the basis of elite interviews, an expert stakeholder survey and relevant documents. Another case study on the Cambay basin is used to further demonstrate the influence of political factors on CCS implementation, even in an area considered to have suitable technical conditions. The outcomes of this study have implications for policy addressing global challenges, especially by means of international cooperation and technological change.
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Richardson, Michael Grant. "Current business-case for Carbon Capture and Storage technology in New Zealand." Thesis, University of Canterbury. Engineering Management, 2013. http://hdl.handle.net/10092/7550.
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Whittaker, David Hugh. "New technology and employment relations : CNC in Japanese and British factories." Thesis, Imperial College London, 1988. http://hdl.handle.net/10044/1/47301.
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Kubášek, Pavel. "Technologie výroby zápustky." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-230790.
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The aim of the master´s thesis is to adjust the technology of machining of a die on the CNC lathe so that the total time for the production of a die could be reduced significantly and in this way also the production costs. The analyse of the technology of the machining of the inner part of the die is carried out and a change in the machining of this part is suggested. The new technology is elaborated in two variants when the CAD/CAM system is used for the creation of a programme in a variant and the machining cycles in the other. The technical and economical evaluation is performed at the end of the thesis.
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Kapoor, Rishika. "Malaria Detection Using Deep Convolution Neural Network." University of Cincinnati / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1613749143868579.
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Dlouhý, Vít. "Obrábění rotační součásti "těleso" na CNC soustruhu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417080.
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This master's thesis is focused on the technology fundamentals of machining for the use of the CNC lathe which was used for machining the required parts are made of stainless steel. In the introduction are mentioned the historical milestones related to machine tools. In the following chapter is analyzed machining process and related fact. A follow-up chapter contains the parameters common to a modern machine tool CNC machines. Followed by the practical part with the characteristics of the machined components. The next chapter includes a selection of CNC lathe for production. Continued by selecting the appropriate cutting tool and adjusting the machine for the given component. They were applied a total of three variants of production with the subsequent evaluation. In conclusion, it became established fact, for example, the advantages of the shape tools or the use of more spindles during the machining.
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Brázda, Jiří. "Technologie výroby obráběním na CNC strojích." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2009. http://www.nusl.cz/ntk/nusl-228792.
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This diploma thesis deals with a technology of production milling of sample component “ending of generator shaft” by CNC milling in environment of small company. At first common aspects of CNC machines, technology of CNC milling and technology of construction are introduced. Possible problems with milling of sample component are analyzed and their possible solutions are presented. Next technology of CNC milling with operating program for CNC lathe (HAAS SL20) and CNC milling machine (HAAS VF3), production of component in small company with necessary documentation in technology procedure are projected. Using of operating systems HAAS, Fanuc and HEIDEHAIN are compared. Using of cutting tools and cutting condition for component milling is projected. Finally timing of operations and financial calculations necessary for small production of sample component is proposed.
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Raveendran, Sadia P. "The role of CCS as a mitigation technology and challenges to its commercialization." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/81127.
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Thesis (S.M. in Technology & Policy)--Massachusetts Institute of Technology, Engineering Systems Division, 2013.Cataloged from PDF version of thesis.
Includes bibliographical references (p. 103-112).
Greenhouse gases are being emitted at an increasing rate, which may cause irreversible damage to the earth's climate. Considering the magnitude of CO₂ emissions from industrial facilities and power plants, carbon capture and storage (CCS) is expected to play an important role in mitigating climate change. The estimated contribution of CCS to a given emissions reduction target depends on assumptions made about various factors such as the availability of the technology, the availability of substitutes such as nuclear technology, and the stringency of emissions reduction targets. Given that the global energy economy has largely been operating in "business as usual" mode, the effective implementation of a carbon policy is likely to be delayed. In addition, other trends in the energy sector such as the availability of inexpensive gas-based generation and the uncertainty related to nuclear capacity expansion may also have an impact on the role of CCS. Part A of this thesis analyzes the importance of CCS as a mitigation technology under different future policy responses and incorporating these current trends. Using the Emissions Prediction & Policy Analysis (EPPA) model developed by the Joint Program on the Science & Policy of Global Change at the Massachusetts Institute of Technology (MIT), the study finds that the more stringent the emission caps, the more important the role of CCS becomes. In addition, the role of natural gas based generation is found to be transitional in its contribution to emissions reduction. Consequently, the availability of inexpensive gas-based generation does not eliminate the need for CCS towards the end of the century. Furthermore, advanced nuclear technology and CCS are found to be close substitutes for technologies that serve the needs of a low-carbon economy in the latter half of the century. The role of one technology, therefore, is in part determined by how technological development and cost reduction occurs in the other. Part B of this thesis focuses on challenges experienced in the current demonstration phase of CCS technology development. Most demonstration projects are typically supported by a combination of policy incentives such as grants, investment tax credits, production tax credits, loan guarantees, or additional sources of revenue. Regardless, many of these demonstration projects have been cancelled in the recent past primarily due to poor project economics. A financial model was developed and used to analyze the impact of each of these policy incentives on project economics. In addition, case studies have been conducted on two major demonstration projects: ZeroGen (Australia) and the Kemper Country (USA). The study finds that even with the combined impact of all incentives, first-of-a-kind CCS plants are not economical when compared to supercritical pulverized coal plants. CCS and similar low carbon technologies are also facing increasing economic pressure from cheaper natural gas-based electricity. These factors, in addition to endogenous risks associated with first-of-a-kind plants, are likely to deter potential developers. Therefore, CCS demonstration plants may require other policy mechanisms such as a rate-based pay that allow costs to be passed on to consumers. Policymakers may need to consider the distributional impacts of such a mechanism because costs are borne by consumers within a particular jurisdiction whereas the benefits of commercializing CCS accrue to a larger group of consumers. Regardless, incurring costs in the short-term may be inevitable to ensure the availability of CCS as a competitive, longer-term low carbon technology option.
by Sadia P. Raveendran.
S.M.in Technology & Policy
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Hu, Jiaqi. "TARGETING MECHANOTRANSDUCTION-RELATED GENES OF THE HAIR CELLUSING TALEN AND CRISPR/CAS TECHNOLOGY." Case Western Reserve University School of Graduate Studies / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=case1417780489.
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Eklund, Anton. "Cascade Mask R-CNN and Keypoint Detection used in Floorplan Parsing." Thesis, Uppsala universitet, Institutionen för informationsteknologi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-415371.
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Parsing floorplans have been a problem in automatic document analysis for long and have up until recent years been approached with algorithmic methods. With the rise of convolutional neural networks (CNN), this problem too has seen an upswing in performance. In this thesis the task is to recover, as accurately as possible, spatial and geometric information from floorplans. This project builds around instance segmentation models like Cascade Mask R-CNN to extract the bulk of information from a floorplan image. To complement the segmentation, a new style of using keypoint-CNN is presented to find precise locations of corners. These are then combined in a post-processing step to give the resulting segmentation. The resulting segmentation scores exceed the current baseline of the CubiCasa5k floorplan dataset with a mean IoU of 72.7% compared to 57.5%. Further, the mean IoU for individual classes is also improved for almost every class. It is also shown that Cascade Mask R-CNN is better suited than Mask R-CNN for this task.
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Roh, Jae Hun. "User adaptation of a networked technology : internet CNN Newsroom in a high school classroom." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/42669.
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Mwebesa, Abraham. "Improving CNC machine utilization by Robotic machine tending." Thesis, KTH, Tillämpad maskinteknik (KTH Södertälje), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-211721.
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Hoffman, Thomas H. "The Impact of eLearning on Computer Numerical Controls (CNC) Training in U.S. Manufacturing." University of Toledo / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1543920258249553.
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Vondrák, Jan. "Technologie CNC frézování." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2010. http://www.nusl.cz/ntk/nusl-228933.
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Common possibility analysis on milling machine, analysis possibility for programming in workshop oriented milling in system Sinumerik 840D ShopMill. Project alternative manufacturing technology including creation NC programme and technical economic valuation for part of Suspension globular screw in axis X.
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Mešina, Matej. "Možnosti systému Sinumerik 840D sl. při programování CNC obráběcích strojů." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-399364.
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The thesis deals with the design and production technology of the front hub for a mountain bike. The research focuses primarily on the various control systems of CNC machining apparatuses. The second chapter is devoted to the elemental differentiation of hubs, the concept of personal design of the hub, and the characteristics of the materials for its production and its verification using the FEM analysis. The third chapter deals with the design of a workpiece, instruments and the manufacturing process itself. The design of an NC program constructed in the SinuTrain 4.8. software is dealt with in the fourth chapter. The last part is devoted to the technical and economic evaluation of the proposed solution.
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Zhang, Jin. "Low-Cost Industrial Manufacturing of CIS-Based Flexible Solar Panels Using Roll-to-Roll Technology." Thesis, The University of Arizona, 2012. http://hdl.handle.net/10150/244825.
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Harnessing the power of the sun through photovoltaic cells is a new area of research and development and may hold the key to sustainable energy on earth. Currently, solar cells and panels with high efficiencies have been successfully created on a laboratory scale. However, in order for solar panels to be marketable and serve as a realistic replacement for current energy sources, a large-scale, high-throughput, and low-cost production system must be devised that is competitive with very cheap fossil fuels that currently dominate the market. The goal of this project is to mass scale the production and manufacturing of inorganic solar cells using cost-effective, roll-to-roll printing methods. Annually, 676 MW of power will be produced, representing 71% of the total US market share for photovoltaic technology, and sold to market at the price of $1/Watt. The design of the solar cell is based on a CuInS₂ absorber layer, ZnS buffer layer and ZnO and ZnO:Ga window layer. The film is printed on a flexible aluminum substrate, 20 inches wide, at a continuous rate of 100 ft/min and a silver-based metal contact is deposited on top. Over the project lifetime, a net present value assuming a 15% nominal interest of $1.7 billion is anticipated.
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Hiselius, Leo. "Igenkänning av musikalisk genre med CNN-nätverk och transfer learning." Thesis, KTH, Skolan för teknikvetenskap (SCI), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-254764.
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Detta projekt studerar effekterna av transfer learning på inhämtandet av information från CNN-baserade ljuddatarepresentationer. Flera otränade CNN- nätverk matas med melspektrogrammatriser och tränas på tre olika uppgifter, nämligen ’genre’, ’region’ och ’year’ och klassifikationsprestandan mäts. Efter detta appliceras transfer learning och klassifikationsprestandan mäts igen. F1- score för individuella klasser inom de olika uppgifterna mäts också. Genom att jämföra resultaten visas att transfer learning är applicerbart på denna domän.This project studies the effects of transfer learning on music information retrieval tasks of CNN-based audio data representations. Several neural networks are fed melspectrogram matrices and trained with random initial weights on three different classification tasks including ’genre’, ’region’ and ’year’ and classification performance is measured, after which transfer learning is utilized and classification performance is measured again. F1-score for individual classes within the different tasks is also measured. Comparing the results shows that transfer learning is applicable in this task domain.
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Raghavan, Avanthi. "Leveraging CRISPR/Cas Genome Editing Technology to Identify and Characterize Causal GWAS Variants for Blood Lipids." Thesis, Harvard University, 2017. http://nrs.harvard.edu/urn-3:HUL.InstRepos:32676132.
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Genome-wide association studies (GWAS) have identified a number of novel genetic loci linked to serum cholesterol and triglyceride levels. The causal DNA variants at these loci and the mechanism by which they influence phenotype and disease risk remain largely unexplored. Expression quantitative trait locus (eQTL) analyses of patient liver and adipose biopsies indicate that many lipid-associated variants influence gene expression in a cis-regulatory manner. However, linkage disequilibrium (LD) among neighboring single nucleotide polymorphisms (SNPs) at a GWAS-implicated locus makes it challenging to pinpoint the actual variant underlying an association signal. Here we performed high-throughput identification of putative disease-causal loci through a functional reporter-based screen, the massively parallel reporter assay (MPRA). We then validated prioritized variants using a combination of genome edited stem cells, clustered regularly interspaced short palindromic repeats (CRISPR) interference, and in vivo genome edited humanized mouse models to establish rs2277862-CPNE1, rs10889356-ANGPTL3, and rs12740374-SORT1 as causal SNP gene sets. These results highlight a novel experimental framework to discover causal genes and variants contributing to complex human traits.
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Věrný, Luděk. "Technologie CNC výroby součástí z hliníkových slitin." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-229842.
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This diploma thesis is elaborated on the specific assignment of AB Komponenty Ltd. The core of this thesis features the technology of manufacturing of component BASE CROSSBAR of aluminium alloy EN AW 2017 on the vertical machining center. CNC control program for the suggested technology is developed in the CAM software PowerMill 2010th. To complete the work it also includes a brief introduction to the issues and analysis of aluminum, aluminum alloys and coatings. From the perspective of the practice is probably the most beneficial and interesting final technical economic evaluation of selected solution of the given problem. The suggested technology can be a significant saving in production costs.
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Sychra, Jiří. "Návrh nové technologie výroby rotační součásti." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2016. http://www.nusl.cz/ntk/nusl-241230.
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This master’s thesis is focused on a new production technology of a rotational part. The SolidWorks software was used for create the component design. According to the proposed models, CNC program using parametric programming using mathematical functions was created in the CNC Syntax Editor Free Edition program. The final step was the experimental verification of the functionality and components compared with other type and the economical evaluation of manufactured components.
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Paditz, Ludwig. "Using ClassPad-technology in the education of students of electricalengineering (Fourier- and Laplace-Transformation)." Proceedings of the tenth International Conference Models in Developing Mathematics Education. - Dresden : Hochschule für Technik und Wirtschaft, 2009. - S. 469 - 474, 2012. https://slub.qucosa.de/id/qucosa%3A1799.
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By the help of several examples the interactive work with the ClassPad330 is considered. The student can solve difficult exercises of practical applications step by step using the symbolic calculation and the graphic possibilities of the calculator. Sometimes several fields
of mathematics are combined to solve a problem. Let us consider the ClassPad330 (with the actual operating system OS 03.03) and discuss on some new exercises in analysis, e.g. solving a linear differential equation by the help of the Laplace transformation and using the inverse Laplace transformation or considering the Fourier transformation in discrete time (the Fast Fourier Transformation FFT and the inverse FFT). We use the FFT- and IFFT-function to study periodic signals, if we only have a sequence generated by sampling the time signal. We know several ways to get a solution. The techniques for studying practical applications fall into the following three categories: analytic, graphic and numeric. We can use the
Classpad software in the handheld or in the PC (ClassPad emulator version of the handheld).
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Malecha, Michael Markus. "Identification of lubricant contaminants in beverage cans using spectroscopic analysis and chemometrics." Thesis, Cranfield University, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.269638.
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Paditz, Ludwig. "Using ClassPad-technology in the education of students of electrical engineering (Fourier- and Laplace-Transformation)." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-80814.
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By the help of several examples the interactive work with the ClassPad330 is considered. The student can solve difficult exercises of practical applications step by step using the symbolic calculation and the graphic possibilities of the calculator. Sometimes several fields
of mathematics are combined to solve a problem. Let us consider the ClassPad330 (with the actual operating system OS 03.03) and discuss on some new exercises in analysis, e.g. solving a linear differential equation by the help of the Laplace transformation and using the inverse Laplace transformation or considering the Fourier transformation in discrete time (the Fast Fourier Transformation FFT and the inverse FFT). We use the FFT- and IFFT-function to study periodic signals, if we only have a sequence generated by sampling the time signal. We know several ways to get a solution. The techniques for studying practical applications fall into the following three categories: analytic, graphic and numeric. We can use the
Classpad software in the handheld or in the PC (ClassPad emulator version of the handheld).
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Abdulshahed, Ali. "The application of ANN and ANFIS prediction models for thermal error compensation on CNC machine tools." Thesis, University of Huddersfield, 2015. http://eprints.hud.ac.uk/id/eprint/27946/.
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Thermal errors can have significant effects on Computer Numerical Control (CNC) machine tool accuracy. The errors come from thermal deformations of the machine elements caused by heat sources within the machine structure or from ambient temperature change. The effect of temperature can be reduced by error avoidance or numerical compensation. The performance of a thermal error compensation system essentially depends upon the accuracy and robustness of the thermal error model and its input measurements. This thesis first reviews different methods of designing thermal error models, before concentrating on employing Artificial Intelligence (AI) methods to design different thermal prediction models. In this research work the Adaptive Neuro-Fuzzy Inference System (ANFIS) is used as the backbone for thermal error modelling. The choice of inputs to the thermal model is a non-trivial decision which is ultimately a compromise between the ability to obtain data that sufficiently correlates with the thermal distortion and the cost of implementation of the necessary feedback sensors. In this thesis, temperature measurement was supplemented by direct distortion measurement at accessible locations. The location of temperature measurement must also provide a representative measurement of the change in temperature that will affect the machine structure. The number of sensors and their locations are not always intuitive and the time required to identify the optimal locations is often prohibitive, resulting in compromise and poor results. In this thesis, a new intelligent system for reducing thermal errors of machine tools using data obtained from thermography data is introduced. Different groups of key temperature points on a machine can be identified from thermal images using a novel schema based on a Grey system theory and Fuzzy C-Means (FCM) clustering method. This novel method simplifies the modelling process, enhances the accuracy of the system and reduces the overall number of inputs to the model, since otherwise a much larger number of thermal sensors would be required to cover the entire structure. An Adaptive Neuro-Fuzzy Inference System with Fuzzy C-Means clustering (ANFIS-FCM) is then employed to design the thermal prediction model. In order to optimise the approach, a parametric study is carried out by changing the number of inputs and number of Membership Functions (MFs) to the ANFIS-FCM model, and comparing the relative robustness of the designs. The proposed approach has been validated on three different machine tools under different operation conditions. Thus the proposed system has been shown to be robust to different internal heat sources, ambient changes and is easily extensible to other CNC machine tools. Finally, the proposed method is shown to compare favourably against alternative approaches such as an Artificial Neural Network (ANN) model and different Grey models.
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Thérien, Michel. "L'informatisation du travail dans une administration municipale cas : ville de Joliette /." Thèse, Chicoutimi : Université du Québec à Chicoutimi, 1990. http://theses.uqac.ca.
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Sandelin, Fredrik. "Semantic and Instance Segmentation of Room Features in Floor Plans using Mask R-CNN." Thesis, Uppsala universitet, Institutionen för informationsteknologi, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-393348.
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Machine learning techniques within Computer Vision are rapidly improving computers' high-level understanding of images, thus revealing new opportunities to accomplish tasks that previously required manual intervention from humans. This paper aims to study where the current machine learning state-of-the-art is when it comes to parsing and segmenting bitmap images of floor plans. To assess the above, this paper evaluates one of the state-of-the-art models within instance segmentation, Mask R-CNN, on a size-limited and challenging floor plan dataset. The model handles detecting both objects and generating a high-quality segmentation map for each object, allowing for complete image segmentation using only a single network. Additionally, in order to extend the dataset, synthetic data generation was explored, and results indicate that it aids the network with floor plan generalization. The network is evaluated on both semantic and instance segmentation metrics and results show that the network yields good, almost completely segmented floor plans on smaller blueprints with little noise, while yielding decent but not completely segmented floor plans on large blueprints with a large amount of noise. Based on the results and them being achieved from a limited dataset, Mask R-CNN shows that it has potential in both accuracy and robustness for floor plans segmentation, either as a standalone network or alternatively as part of a pipeline of several methods and techniques.
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Tunell, John. "Classification of offensive game-emblem drawings using CNN (convolutional neural networks) and transfer learning." Thesis, Uppsala universitet, Institutionen för informationsteknologi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-348944.
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Convolutional neural networks (CNN) has become an important tool to solve many computer vision tasks of today. The technique is though costly, and training a network from scratch requires both a large dataset and adequate hardware. A solution to these shortcomings is to instead use a pre-trained network, an approach called transfer learning. Several studies have shown promising results applying transfer learning, but the technique requires further studies. This thesis explores the capabilities of transfer learning when applied to the task of filtering out offensive cartoon drawings in the game of Battlefield 1. GoogLeNet was pre-trained on ImageNet, and then the last layers were fine-tuned towards the target task and domain. The model achieved an accuracy of 96.71% when evaluated on the binary classification task of predicting non-offensive or swastika/penis content in Battlefield "emblems". The results indicate that a CNN trained on ImageNet is applicable, even when the target domain is very different from the pre-trained networks domain.
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Fors, Lisa. "Verksamhetsanpassning av IT-baserat finanssystem." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-94187.
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If P&C Insurance Company faces a challenge when their treasury system needs a new interface to a software as a service application. They need a suggestion for configuration for how the system and the application can work together. The work presented in this report is a suggestion for how you can make business configuration of an IT-based Treasury System in general. The exact configuration for the case received from If is presented as a separate report, found in Appendix A and is called the If-report. The If-report presents the suggested technical set-up of the configuration. It is not company specific but system and application specific. The work made in that report will be a standard in future version of the treasury system. The work made in this report is presented to the Royal Institute of Technology and can work as an example of how to approach a business configuration that needs to be done in an IT-based Treasury System.
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Lagerhjelm, Linus. "Extracting Information from Encrypted Data using Deep Neural Networks." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-155904.
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In this paper we explore various approaches to using deep neural networks to per- form cryptanalysis, with the ultimate goal of having a deep neural network deci- pher encrypted data. We use long short-term memory networks to try to decipher encrypted text and we use a convolutional neural network to perform classification tasks on encrypted MNIST images. We find that although the network is unable to decipher encrypted data, it is able to perform classification on encrypted data. We also find that the networks performance is depending on what key were used to en- crypt the data. These findings could be valuable for further research into the topic of cryptanalysis using deep neural networks.
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Aldén, Fanny, and Emil Juopperi. "UX-verktyg för prototyputveckling med AI-baserat automationsstöd för omvandling av skisser till gränssnittskomponenter." Thesis, Linköpings universitet, Medie- och Informationsteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-153846.
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Att skapa prototyper för att testa idéer är vanligt, oavsett vad det är som ska testas. Prototyper kan förekomma i oändligt olika former och vara mer eller mindre verklighetstrogna. Hur verklighetstrogen en prototyp är beror på vad som ska testas och hur mycket tid som läggs på prototypskapandet. I teknikbranschen är prototyperna vanligen digitala och skapas med prototypprogram. Eftersom tid är pengar så försöker företag effektivisera prototyprocessen genom att utforska nya tekniker, som exempelvis artificiell intelligens. Syftet med examensarbetet som beskrivs i den här rapporten är att undersöka hur ett prototypverktyg med automation bör utformas samt vilka eventuella användningsområde verktyget har. Under examensarbetet genomfördes intervjuer med anställda på konsultföretaget Exsitec. Syftet med intervjuerna var att ta reda på hur Exsitec arbetar med prototyper i uppstarten av sina projekt. Med hjälp av informationen identifierades svårigheter i arbetsprocessen. Utifrån den informationen utvecklades prototypverktyget ProtoDraw. Verktyget är utrustat med artificiell intelligens, som känner igen skisser och ger utifrån dem rekommendationer på webbkomponenter. Prototypverktyget utvecklades, tränades och testades som en del av fallstudien. Målet med fallstudien var att testa användares förtroende för verktyget samt hur förtroendet berodde på verktygets automationsnivå. Prototypverktyget utrustades med tre automationsnivåer interaktionsmodell A, interaktionsmodell B och interaktionsmodell C. Interaktionsmodell A gav alla förslag till användaren och rekommenderade de mest lika komponenterna genom att rama in dem. I interaktionsmodell B fick användaren endast de tre bästa resultaten. I interaktionsmodell C fick användaren endast ett förslag från automationen. Totalt genomfördes 15 användartester, fem stycken på varje nivå. Resultatet från användartesterna visade att interaktionsmodell B hade högst och stadigast förtroende. Interaktionsmodell B var även nivån som användarna ansåg var mest användbar. Trots detta var A nivån som användarna utförde uppgifterna i användartesterna på kortast tid. C hade den långsammaste tiden och det berodde på att den höga automationsnivån bidrog till att gränssnittet blev känsligt för fel.
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Okáč, Petr. "Konstrukčně-výrobní řešení upínacího přípravku." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231357.
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The thesis deals with various aspects of the structure - manufacturing solutions fixture in terms of small manufacturing firm. In the thesis are discussed problems which the author of the thesis with small-scale production meets. A substantial part of the thesis is also made by comparation of the production of small series production and large series. Emphasis is placed on efficiency and economy of the entire production process.
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Bashadi, Sarah (Sarah Omer). "Using auxiliary gas power for CCS energy needs in retrofitted coal power plants." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/59667.
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Thesis (S.M. in Technology and Policy)--Massachusetts Institute of Technology, Engineering Systems Division, Technology and Policy Program, 2010.Cataloged from PDF version of thesis.
Includes bibliographical references (p. 93-96).
Post-combustion capture retrofits are expected to a near-term option for mitigating CO 2 emissions from existing coal-fired power plants. Much of the literature proposes using power from the existing coal plant and thermal integration of its supercritical steam cycle with the stripper reboiler to supply the energy needed for solvent regeneration and CO2 compression. This study finds that using an auxiliary natural gas turbine plant to meet the energetic demands of carbon capture and compression may make retrofits more attractive compared to using thermal integration in some circumstances. Natural gas auxiliary plants increase the power output of the base plant and reduce technological risk associated with CCS, but require favorable natural gas prices and regional electricity demand for excess electricity to make using an auxiliary plant more desirable. Three different auxiliary plant technologies were compared to integration for 90% capture from an existing, 500 MW supercritical coal plant. CO2 capture and compression is simulated using Aspen Plus and a monoethylamine (MEA) absorption process. Thermoflow software is used to simulate three gas plant technologies. The three technologies assessed are the gas turbine (GT) with heat recovery steam generator (HRSG), gas turbine with HRSG and back pressure steam turbine, and natural gas boiler with back pressure steam turbine. The capital cost of the MEA unit is estimated using the Aspen Icarus Process Evaluator, and the capital cost of the external GT plants are estimated using the Thermoflow Plant Engineering and Cost Estimator. The gas turbine options are found to lead to electricity costs similar to integration, but their performance is highly sensitive to the price of natural gas and the economic impact of integration. Using a GT with a HRSG only has a lower capital cost but generates less excess electricity than the GT with HRSG and back pressure steam turbine. In order to generate enough steam for the reboiler, a significant amount of excess power was produced using both gas turbine configurations. This excess power could be attractive for coal plants located in regions with increasing electricity demand. An alternate capture plant scenario where a greater demand for power exists relative to steam is also considered. The economics of using auxiliary plant power improve slightly under this alternate energy profile scenario, but the most important factors affecting desirability of the auxiliary plant retrofit remain the cost of natural gas, the full cost of integration, and the potential for sale of excess electricity.
by Sarah Bashadi.
S.M.in Technology and Policy
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Larsson, Gustav, and Wetterstedt Victor Af. "X Y & Z : En undersökning av ytor skapade med CNC." Thesis, Linköpings universitet, Malmstens Linköpings universitet, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-157428.
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Vi har valt att undersöka CNC-teknikens möjligheter i kombination medhantverkskunskap. Syftet med undersökningen är att ge oss själva större kunskap om CNC-tekniken och hur den kan användas för att produceraobjektmed ytor som känns intressanta. Vi har i enlighet mer vårt mål tagit fram ett antal olika produkter i form av fat som vi fann inspiration till i Japan. Vid tillverkningen har vi undersökt olika träslag och olika fräsriktningar för att få fram olika ytor på faten. Vi har också tittat på hur vi kan effektivisera bearbetningen av våra fat. Vi har sedan använt oss av en enkät där åtta personer med varierande förkunskaper har fått värdera faten utifrån personliga preferenser och uppfattningen av de olika ytorna. Det har vi gjort med avsikt för att få en uppfattning om vilka ytor som tilltalar människor.
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He, Fangxue. "ModuleFinder : a computational model for the identification of Cis regulatory modules." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/33081.
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Thesis (S.M.)--Harvard-MIT Division of Health Sciences and Technology, 2005.Includes bibliographical references (leaves 55-57).
Regulation of gene expression occurs largely through the binding of sequence- specific transcription factors (TFs) to genomic DNA binding sites (BSs). This thesis presents a rigorous scoring scheme, implemented as a C program termed "ModuleFinder", that evaluates the likelihood that a given genomic region is a cis regulatory module (CRM) for an input set of TFs according to its degree of: (1) homotypic site clustering; (2) heterotypic site clustering; and (3) evolutionary conservation across multiple genomes. Importantly, ModuleFinder obtains all parameters needed to appropriately weight the relative contributions of these sequence features directly from the input sequences and TFBS motifs, and does not need to first be trained. Using two previously described collections of experimentally verified CRMs in mammals as validation datasets, we show that ModuleFinder is able to identify CRMs with great sensitivity and specificity. We also evaluated ModuleFinder on a set of DNA binding site data for the human TFs Hepatocyte Nuclear Factor HNF1 [alpha], HNF4 [alpha] and HNF6 and compared its performance with logistic regression and neural network models.
by Fangxue He.
S.M.
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Forbelský, Jiří. "Možnosti CAM softwaru NX při programování CNC obráběcích strojů." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231146.
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The thesis details the NX CAM application and its capabilities in the production of specific shapes on selected components. It includes a selection of machinery, respective tools, together with shanks and clamping cones, as well as selection and verification of the cutting conditions. The process is accompanied by a graphic simulation and complemented by an economic evaluation.
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Thif, Yaman, and Olle Rendlert. "AUTOMATED INK : CNC Tattooing Robot." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-279841.
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The art of tattooing has been around for centuries in human history and tattoos are still very popular in today’s society. Tattoos serve as a way to, for example, express people’s personalities, religious beliefs, or culture, and its growing popularity may lead to the need for more technological and automated alternatives. In this project, a computer numerical control plotter was built to investigate the possibilities of automation of tattooing, and the project focused on the possible limitations of performance and safety in an automated tattooing machine. The machine was built using two stepper motors connected with an H-Bot configuration that moved a gantry in the X and Y directions. A third stepper motor connected to a lead-screw was mounted on the gantry enabling movement in Z direction. Several tests were conducted in order to examine the performance of the machine. These tests were done using ink and whiteboard markers to draw different geometries on paper and the subject’s arm. The results showed limitations in the size of the tattoo as the machine could only draw on a flat surface and therefore had trouble adjusting to the uneven surface of an arm. The results also showed that the machine had some trouble drawing rounded geometries, such as circles, which meant that the circles, to a certain extent, got an elliptical appearance. It did however draw straight lines accurately. The main factors of this were believed to be a combination of sub-optimal assembly and the stepper motors being too weak to optimally operate with the H-Bot configuration. The safety risks were considered restricted when using a limit switch sensor and carefully calibrating the speed and movement in the Z-axis.Tatueringskonsten har funnits i århundraden och tatueringar är fortfarande mycket populära i dagens samhälle. Tatueringar fungerar bland annat som ett sätt att uttrycka människors personligheter, religion eller kultur. Dess växande popularitet kan leda till ett behov av tekniska och automatiserade alternativ. I detta projekt byggdes en CNC-plotter för att undersöka möjligheterna till automatisering av tatueringar och projektet fokuserade på möjliga begränsningar av prestanda och säkerhet hos en automatiserad tatueringsmaskin. Maskinen byggdes med två stegmotorer anslutna med en H-Bot-konfiguration som flyttade en brygga i X- och Y-riktningarna. En tredje stegmotor ansluten till en ledskruv monterades på bryggan vilket möjliggjorde rörelse i Z-led. Flera tester genomfördes för att undersöka maskinens prestanda. Dessa tester gjordes med hjälp av bläck- och tuschpennor för att rita olika geometriska former på papper och testpersoners armar. Resultaten visade begränsningar i tatueringsstorleken eftersom maskinen bara kunde rita på en plan yta och därför hade problem med att anpassa sig till den ojämna ytan av en arm. Resultaten visade också att maskinen hade vissa problem med att rita runda geometrier, så som cirklar, vilket medförde att cirklarna, till en viss grad, fick ett elleptiskt utseende. Den ritade dock raka linjer med bra noggrannhet. De största anledningarna till detta tros vara en kombination av bristfällig montering och att stegmotorerna var för svaga för att optimalt kunna fungera med H-Bot-konfigurationen. Säkerhetsriskerna ansågs vara begränsade vid användning av en gränslägesgivare och noggrann kalibrering av hastigheten och rörelsen i Z-led.
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Symeonidi, Efthymia [Verfasser], and Detlef [Akademischer Betreuer] Weigel. "Studying salicylic acid function in natural accessions of Arabidopsis thaliana using CRISPR/Cas technology / Efthymia Symeonidi ; Betreuer: Detlef Weigel." Tübingen : Universitätsbibliothek Tübingen, 2019. http://d-nb.info/1204880018/34.
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Bojö, Erik, and Vincent Edberg. "Koldioxidlagring i Sverige : En studie om CCS, Bio-CCS, DACCS och biokol ur ett 2045-perspektiv." Thesis, KTH, Hållbar utveckling, miljövetenskap och teknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-297570.
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Sverige har som ambition att uppnå nettonollutsläpp av fossilt CO2 till år 2045. För att lyckas med detta ska landet minska sina utsläpp med 85%, samtidigt som så kallade kompletterande åtgärder kommer vidtas för att kompensera för resterande 15%. Denna studie utreder Sveriges arbete med negativa utsläpp som kompletterande åtgärd med fokus på teknikerna bio-energy for carbon capture and storage (Bio-CCS på svenska), Direct air capture for carbon capture and storage (DACCS) och biokol. Även carbon capture and storage (CCS), som kan bidra till att göra anläggningar CO2-neutrala, har studerats. Under arbetets gång har en litteraturstudie samt intervjuer med forskare, politiker, bransch- och företagsrepresentanter samt myndigheter genomförts. För CCS och Bio-CCS, som innefattar avskiljning av CO2 från punktutsläpp, finns fyra olika avskiljningsstrategier som kallas post-, pre-, och oxyfuel combustion samt chemical looping. I fallet med DACCS tillämpas antingen absorption eller adsorption för att avskilja koldioxiden från atmosfären. Biokol produceras genom förbränning av biomassa i en pyrolysanläggning och kan sedan användas som jordförbättringsmedel och kolsänka. Det finns idag en inhemsk biokolsproduktion på kommersiell skala vilket gör att biokol skiljer sig från de övriga tre teknikerna som inte kommit lika långt i sin utveckling. Däremot finns det ett flertal pilotprojekt inom CCS och Bio-CCS i Sverige. Sveriges väletablerade bioekonomi gör att det finns goda förutsättningar för biokol och Bio- CCS att bidra till negativa utsläpp ur ett 2045-perspektiv. DACCS anses däremot inte aktuellt som kompletterande åtgärd till år 2045. Efter intervjuer framgår att det råder en god samstämmighet mellan olika aktörer kring vilka faktorer som behöver behandlas för att implementera teknikerna. Gemensamt för alla tekniker är att det krävs ekonomiska incitament för att möjliggöra storskalig implementering. För CCS-teknikerna krävs även regulatoriska förändringar för att underlätta transporten av CO2.Sweden's ambition is to achieve net zero emissions of fossil CO2 by the year 2045. To reach this target, Sweden aims to reduce its emissions by 85%, while so-called supplementary measures will be taken to compensate for the remaining 15%. This study investigates Sweden's work with negative emissions as a complementary measure with a focus on the technologies bio-energy for carbon capture and storage (Bio-CCS in Swedish), Direct air capture for carbon capture and storage (DACCS) and biochar. Carbon capture and storage (CCS), which can help make industrial plants CO2-neutral, has also been studied. During the project, a literature study and interviews with researchers, politicians, industry and company representatives as well as authorities were carried out, which formed the basis of the report. For CCS and Bio-CCS, which include separation of CO2 from point source emissions, there are four different separation strategies called post-, pre-, and oxyfuel combustion as well as chemical looping. Among these, post combustion is highlighted as the most developed. In the case of DACCS, either absorption or adsorption is applied to separate CO2 from the atmosphere. CCS, Bio-CCS and DACCS all have in common that the captured CO2 must be stored in deep geological formations once it has been separated. Biochar is produced by heating biomass in a pyrolysis plant and can be used as a soil improver and carbon sink. Today Sweden has a domestic biochar production on a commercial scale, which means that biochar differs from the other three technologies that have yet to reach that stage of development. However, there are several pilot projects within Bio-CCS and CCS in Sweden. Sweden's well-established bioeconomy means that the conditions are good for biochar and Bio-CCS to contribute to negative emissions in relation to the 2045 target. DACCS, on the other hand, is not considered relevant as a supplementary measure to the year 2045 due to its technical immaturity and high cost. From interviews with researchers, authorities, companies, industry organizations and politicians, it is clear that there is a consensus between the different actors on which factors need to be addressed in order to enable large-scale implementation of the technologies. Common to all technologies is that financial incentives are required to enable large-scale implementation. The CCS technologies also require regulatory changes to facilitate the transport of CO2.
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Becirovic, Edina, and Samira Sabic. "Utformning av webbportal för tjänstlediga medarbetare vid Volvo Cars Engine och utexaminerade elever från Volvogymnasiet." Thesis, Jönköping University, School of Engineering, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-554.
Full textAbstract:
This report describes the development of a web site for co-workers on leave of absence at Volvo Cars Engine AB and graduated students at Volvo Upper Secondary School in Skövde. The aim of the web site is to be a complement to existing communication channels in the promotion of the contact between the target group and the company. The work was divided into two parts; the first consisting of a preliminary study used to identify the information which the target group finds absent in their absence from their place of work/school, and the second part consisting of the development of a proposition of content layout and web site design. The finished proposition was presented along with a couple of alternatives for the technical implementation. The information department at Volvo Cars Engine AB in consultation with Volvo Cars IT will carry on the implementation, administration and further development of the proposed solutions.
Denna rapport beskriver utformningen av en webbportal för tjänstlediga medarbetare vid Volvo Cars Engine AB och utexaminerade elever vid Volvogymnasiet i Skövde. Syftet med portalen är att fungera som ett komplement till de befintliga kommunikationskanalerna i främjandet av kontakten mellan målgruppen och företaget. På sikt är målet att de tjänstlediga och utexaminerade eleverna ska välja att återkomma och satsa på olika karriärvägar inom Volvo.
Arbetet bestod av två delar. I den första delen genomfördes en förstudie för att identifiera information som målgruppen tycker sig sakna vid deras frånvaro från arbetsplatsen/gymnasiet. Förstudien realiserades med intervjuer med ägarna och nyckelpersoner på företaget, samt med telefonintervjuer med ett slumpmässigt urval från målgruppen. Resultatet av förstudien användes i arbetets andra del som gick ut på att skapa ett förslag på innehållslayout och design av webbportalen. Den andra delen av arbetet delades in i fyra faser. Under de fyra faserna togs det fram ägar- och målgruppsanalys, innehålls- och kravspecifikation, sidstruktur och layout samt grafisk design för webbportalen, med tonvikt på användarvänlighet enligt rekommendationer från Jakob Nielsen. Utformningen av layouten och designen hade p.g.a. företagets policy utgångspunkt i företagskulturen vad gäller design och layout på de externa webblösningarna.
Ett antal alternativ för den tekniska lösningen togs också fram. Dessa är open-source CMS på externt webbhotell, Volvo Cars portallösning på Volvo Cars webbserver, samt Fronter-portal på företaget DoubleClick AB´s server.
Det färdiga förslaget presenterades tillsammans med ett antal alternativ för den tekniska lösningen. Implementationen, förvaltningen och vidareutvecklingen av de föreslagna lösningarna drivs vidare av informationsavdelningen på Volvo Cars Engine AB i samråd med Volvo Cars IT