Phd Degree / Doktora
Permanent URI for this collectionhttps://hdl.handle.net/11147/2869
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Doctoral Thesis The Impact of Organizationaol Learning on Turkish Architectural Design Firms' Performance: a Structural Equation Model Doctor of Philosophy(Izmir Institute of Technology, 2010) Günaydın, Hüsnü Murat; Günaydin, Hüsnü Murat; 02.02. Department of Architecture; 02. Faculty of Architecture; 01. Izmir Institute of TechnologyOrganizational learning is fundamental for improving performance within a rapidly changing and competitive business environment. The dissertation develops a model that assesses the impact of organizational learning on performance of architectural design firms. An extensive literature review was realized on organizational learning, performance, and architectural design firms. The impact of organizational learning on performance of the architectural design firms was measured with an instrument. The structured questionnaire includes information about organizational learning constructs namely; learning flows (feed-forward and feedback), learning stocks (learning at individual, project, and firm levels), and performance of the firm. After a pilot study was conducted in Northern Cyprus, the main questionnaire survey was administered to 165 architectural design firms in Turkey. A structural equation model was developed by using Structural Equation Modeling (SEM) to determine how organizational learning can be prioritized in driving performance improvement. The direct effect of .learning at firm level on performance of the firm. was high (.81). The 10 claimed hypotheses were accepted. It was found that there is a high correlation between .learning flows. (.90). The direct effect of .feed-forward on learning at individual level. and .feedback on learning at firm level. is high (.70 and .74 respectively). This research provides reference for architectural design firms on measuring the impact of organizational learning on performance of the firm. The dissertation was concluded with confirming the interrelations of organizational learning constructs and significant impact of organizational learning on performance of the firm.Doctoral Thesis A Method on Energey-Efficient Retrofitting for Existing Building Envelopes(Izmir Institute of Technology, 2010) Günaydın, Hüsnü Murat; Günaydin, Hüsnü Murat; 02.02. Department of Architecture; 02. Faculty of Architecture; 01. Izmir Institute of TechnologyStarting in 1970s with the two major oil crises, conservation of non-renewable energy sources became an important concern. Buildings, which hold a large portion of energy consumed in the world, became subject to significant reductions through the energy consuming processes, especially for space heating and cooling energy consumption end uses. Strong initiatives are set in the world, promoting energy efficiency in buildings, both for new designs and existing building stock. However, energy-efficient improvement of existing building stock is a more challenging process for existing buildings; due to lack of energy conscious decisions, which were disregarded during design process. Energy-efficient retrofitting thus becomes an important focus of the research areas that aim to endorse efficiency in buildings Principally with Energy Performance in Buildings Directive of European Union, methodologies to optimize design decisions for energy-efficient retrofitting emerged. In Turkey, energy performance of buildings is recently introduced with a regulation in 2008. Prior to this regulation TS 825 Thermal Insulation in Buildings was the main control mechanism, which was only mandatory a decade ago. The lack of methodological approach and control mechanisms caused the relatively young Turkish building stock, become non-insulated or poorly insulated. Therefore this research focuses on proposing a methodology for energy-efficient retrofitting of public building envelopes, particularly as building types which may raise public awareness on the necessity of energy efficiency in buildings. The dissertation aims to fill the gap of a structured methodology which can be applied throughout defined set of actions to diagnose the existing performance of a building, to propose retrofitting options and evaluate these options to assess an advantageous solution to energy-efficient retrofit of public building envelopes. The thesis aims to indicate the savings in annual energy consumption, reduction in CO2 emissions and improvement in indoor thermal comfort as a result of a retrofitting action applied due to a structured methodology.