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Architecture's Red Tape : Government Building Construction in Sweden, 1963-1973. The example of the National Board of Public Building, KBS (Kungliga Byggnadsstyrelsen)Sigge, Erik January 2017 (has links)
Architecture’s Red Tape is a critical study of the relation between public architecture and public administration in the 1960s and 1970s. The thesis focuses on the work of the Swedish National Board of Public Building, KBS, which was a government agency in charge of providing premises for the Swedish state at that time. KBS expanded its construction of new buildings during the 1960s and did extensive research and development work to find new rational and efficient working methods and building systems. The development of KBS culminated in the implementation of an official architectural philosophy in 1968, called the “structure philosophy.” The architectural ideas were drafted parallel to new administrative systems that were in turn based on rational choice theories. The thesis studies the developments of KBS’ architecture, both as processes of building production (architecture practice) and as the built result of these processes (buildings), through the analysis of four different instruments. These instruments – Program Budgeting, KBS’ Structure Philosophy, Incentive Contract, and System Building – were important means in KBS’ efforts to rationalize building production and make operations more efficient. KBS highlighted new features in the practices of architecture – emphasizing process, the user, functionality, performance, evaluations, results, etc. – that could be reviewed as a redefinition of the architectural project. This review is explicit on two different levels: firstly, as a redefinition of the architectural object most clearly found in KBS’ publicly announced shift from building construction to “premises production.” Secondly, there is a redefinition of architectural practice that relocates the interest of design, making it more about programming with a heightened interest in the processes of defining the scope and problems of design. / <p>QC 20170825</p>
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Thin-walled composite deployable booms with tape-spring hingesMallikarachchi, H. M. Yasitha Chinthaka January 2011 (has links)
Deployable structures made from ultra-thin composite materials can be folded elastically and are able to self-deploy by releasing the stored strain energy. Their lightness, low cost due to smaller number of components, and friction insensitive behaviour are key attractions for space applications. This dissertation presents a design methodology for lightweight composite booms with multiple tape-spring hinges. The whole process of folding and deployment of the tape-spring hinges under both quasi-static and dynamic loading has been captured in detail through finite element simulations, starting from a micro-mechanical model of the laminate based on the measured geometry and elastic properties of the woven tows. A stress-resultant based six-dimensional failure criterion has been developed for checking if the structure would be damaged. A detailed study of the quasi-static folding and deployment of a tape-spring hinge made from a two-ply plain-weave laminate of carbon-fibre reinforced plastic has been carried out. A particular version of this hinge was constructed and its moment-rotation profile during quasi-static deployment was measured. Folding and deployment simulations of the tape-spring hinge were carried out with the commercial finite element package Abaqus/Explicit, starting from the as-built, unstrained structure. The folding simulation includes the effects of pinching the hinge in the middle to reduce the peak moment required to fold it. The deployment simulation fully captures both the steady-state moment part of the deployment and the final snap back to the deployed configuration. An alternative simulation without pinching the hinge provides an estimate of the maximum moment that could be carried by the hinge during operation. This moment is about double the snap-back moment for the particular hinge design that was considered. The dynamic deployment of a tape-spring hinge boom has been studied both experimentally and by means of detailed finite-element simulations. It has been shown that the deployment of the boom can be divided into three phases: deployment; latching, which may involve buckling of the tape springs and large rotations of the boom; and vibration of the boom in the latched configuration. The second phase is the most critical as the boom can fold backwards and hence interfere with other spacecraft components. A geometric optimisation study was carried out by parameterising the slot geometry in terms of slot length, width and end circle diameter. The stress-resultant based failure criterion was then used to analyse the safety of the structure. The optimisation study was focused on finding a hinge design that can be folded 180 degrees with the shortest possible slot length. Simulations have shown that the strains can be significantly reduced by allowing the end cross-sections to deform freely. Based on the simulations a failure-critical design and a failure-safe design were selected and experimentally verified. The failure-safe optimised design is six times stiffer in torsion, twice stiffer axially and stores two and a half times more strain energy than the previously considered design. Finally, an example of designing a 1 m long self-deployable boom that could be folded around a spacecraft has been presented. The safety of this two-hinge boom has been evaluated during both stowage and dynamic deployment. A safe design that latches without any overshoot was selected and validated by a dynamic deployment experiment.
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Multifunctional carbon fibre flat tape for compositesKoncherry, Vivek January 2014 (has links)
Recently, there has been a significant growth in the use of composites in sectors such as automotive, aerospace and wind energy. Composites are traditionally designed for mechanical performance in terms of strength, stiffness and impact energy absorption; however multifunctionality has become the focus of researchers and designers in recent years. Multifunctional design of composites involve adding functionality such as thermal management, radiation shielding, stealth, structural health monitoring and energy storage at material level rather than adding discrete components afterwards. The aim of the current research is to incorporate multi-functionality at tow-scale both as a processing aid during manufacture and adding additional functionality during subsequent processing. Various laboratory scale machines were developed as a part of this study to identify the ideal way to spread and incorporate metallic materials into the carbon fibre tows, thereby making them multifunctional. Manufacturing processes such as co-mingling of micro-fibres, coating with metallic powder and screen printing of metallic grid lines have been developed in this work. One of the objective of this thesis is to metallise carbon tow in order to use it in conjunction with magnetic tooling, as part of the chopped fibre preforming process developed by the University of Nottingham and Bentley Motors. The performance of the metallised tow has been evaluated using characterisation tests such as magnetic pull force test, bending rigidity test etc. Finite element models have been developed to verify the experimental results of magnetic pull force and bending properties. As observed during the research, the bending properties of the carbon tow were found to influence the accuracy of the finite element modelling significantly. Study into the bending properties of the carbon fibre and Multifunctional carbon tow using two different principles such as carbon tow bending under own weight and bending due to the application of an external force were carried out. In each case the governing mathematical models were also derived.
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Composing with the tape recorder : A case study of My Life in the Bush of Ghosts by Brian Eno & David ByrneÅström, Johanna January 2020 (has links)
This work describes the utilisation of the tape recorder as an instrument, the methods derived by musique concrète and the evolution of these practices. This leads on to its application that opened different creativity streams to many genres of music that we listen to today. This dissertation dives in the further to talk about to the album ‘My Life in the Bush of Ghosts’ by Brian Eno and David Byrne its cult status, revolutionary production and opens doors to discussing cultural appropriation and copyright infringement.
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Moderní technologické prvky pro trubkové výměníky tepla / Modern technological elements for tubular heat exchangersPlánková, Tereza January 2020 (has links)
The aim of this diploma thesis is to get acquainted with modern technological elements currently used in shell-and-tube heat exchanger in the shell-side and tube-side, thermal-hydraulic calculation of selected elements and comparison of thermal-hydraulic properties with classically used competing technological elements. The work deals mainly with EM baffle in the tube-side and tube inserts like the twisted tape type (and its modifications) and coiled wire in the tube-side. The theoretical part is focused on acquaintance with classical technological elements in shell-and-tube heat exchanger and with basic thermal-hydraulic calculations, practical part then on acquaintance with modern elements and thermal-hydraulic calculation of selected elements. These calculations are then compared with the results of the thermo-hydraulic calculation of similar elements.
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Zálohování dat a datová úložiště / Data Backup and Data StoragesSpáčil, Michael January 2021 (has links)
The diploma thesis is focused on the design of a backup system to increase the efficiency of working with stored data and increase the security of stored data. The analysis of the current state describes the company itself and also the backup system using the audit portal Zefis.cz. The following part describes the design of a new backup system that focuses on complexity using the cloud, magnetic tapes, and high server availability.
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Řízení převíječky sádrokartonářské pásky (DWT) / Control of dry wall tape (DWT) rewinderBis, Jan January 2017 (has links)
This thesis deals with a description of the industrial machine of the DWT (drywall tape) rewinder. The winder rewinds and cuts the drywall tape tape into smaller tapes, that are then sold. The first part contains a description of the winder, its structure and functions of its individual parts. The second part contains a description of the control system and the power wiring of winder. The next section contains a description of programming and setting of PLC, frequency inverters, and touch panel. Some modifications are then described when putting the winder into operation. The winder has been successfully implemented and built into a continuous shift operation. However, the development of the rewinder continues to improve its features and user-friendliness.
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Summer Rain Part I Summer Rain - Dawn for Two-channel Tape; Part II After the Summer Rain for Piano and Two-channel TapeKawamoto, Hideko 12 1900 (has links)
This dissertation contains five chapters: 1. Introduction, 2. Basic Digital Processing Used in Summer Rain, 3. Part I Summer Rain - Dawn, 4. Part II After the Summer Rain and 5. Conclusion. Introduction contains a brief historical background of musique concrète, Electronische Musik, acousmatic music and music for instruments and tape, followed by basic descriptions of digital technique used in both parts of Summer Rain in Chapter 2. Also Chapter 2 describes software used in Summer Rain including "Kawamoto's VST," which is based on MAX/MSP, to create new sounds from the recorded samples using a Macintosh computer. In both Chapter 3 and 4, Kawamoto discusses a great deal of the pre-compositional stage of each piece including inspirational sources, especially Rainer Maria Rilke's poems and Olidon Redon's paintings, as well as her visual and sound imageries. In addition Chapter 3 she talks about sound sources, pitch, form and soundscape. Chapter 4 contains analysis on pitch in the piano part, rhythm, form and the general performance practice. Chapter 5 is a short conclusion of her aesthetics regarding Summer Rain, which is connected to literature, visual art and her Japanese cultural background.
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Aesthetic and Technical Analysis on Soar!Wang, Hsiao-Lan 08 1900 (has links)
Soar! is a musical composition written for wind ensemble and computer music. The total duration of the work is approximately 10 minutes. Flocking behavior of migratory birds serves as the most prominent influence on the imagery and local structure of the composition. The cyclical nature of the birds' journey inspires palindromic designs in the temporal domain. Aesthetically, Soar! portrays the fluid shapes of the flocks with numerous grains in the sounds. This effect is achieved by giving individual parts high degree of independence, especially in regards to rhythm. Technically, Soar! explores various interactions among instrumental lines in a wind ensemble, constructs overarching symmetrical structures, and integrates a large ensemble with computer music. The conductor acts as the leader at several improvisational moments in Soar! The use of conductor-initiated musical events in the piece can be traced back through the historic lineage of aleatoric compositions since the middle of the twentieth century. [Score is on p. 54-92.]
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Music for Organ and Electronics: Repertory, Notation, and Performance PracticeBurghart Rice, Heike S. 02 June 2015 (has links)
No description available.
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