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Showing 41 to 48 of 48 (0.035 seconds)Spelling suggestions: "subject:"wrapped""
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Kapcitetsanalys i Emballeringen : Emballeringslinjen: Kapacitetsanalys och flödesåtgärder inför potentiellproduktionsökning / Capacity Analysis in the Wrapping Line : Wrapping Line: An Analysis of Capacity and Arrangements in Flow for aPotential Increase in ProductionÖstlund, Hugo January 2021 (has links)
This project was implemented during spring 2021 as a bachelor thesis for the Bachelor Engineering Program in Mechanical Engineering at Karlstads University. The project wascarried out in collaboration with Stora Enso Skoghall Mill, which produces different types of cardboard material. In 2020, the overall production capacity was 875 000 tons of cardboard material. In November 2020 Skoghall Mill was authorized to precede an investigation regarding a possible production increase, which would result in a self-sufficient pulp production and an increase of 120 000 tons cardboard material per year. The cardboard is winded into rolls before they are being transported to the customers. Before the transportation, the reels are given a protecting wrapping. This procedure occurs in a production segment called the Wrapping Line, which is a part of the Finishing Department. The Wrapping Line is one of the production areas that would be affected by a potential increase of production. Therefore, the responsible of the unit wanted to examine if the Wrapping Linehad enough capacity for a potential increase of this size. The purpose of this paper was to carry out a capacity analysis for the line, identify bottlenecks in the flow and to present arrangements to make the production line more effective. Furthermore, an additional purpose was to identify how long the maintenance stops could beif the potential production increase is approved. The capacity analysis was carried out using a simulation software called JaamSim. A model of the existing system was built in JaamSim, which afterwards was analyzed. The capacity analysis showed that Emballeringen has the needed capacity if the production increase isapproved. The capacity analysis also displayed the possible length of maintenance stops. Arrangements in flow was presented and prioritized so that the capacity in the Wrapping Linewould increase further.
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Reengenharia de interfaces utilizando Wrapping.Affonso, Frank José 05 September 2003 (has links)
Made available in DSpace on 2016-06-02T19:05:18Z (GMT). No. of bitstreams: 1
DissFJA.pdf: 3257954 bytes, checksum: 6cf58fbd124ba9dd6b97f1f8ea5b6b2a (MD5)
Previous issue date: 2003-09-05 / With the technological evolution and the increasing utilization of the Internet, companies and governmental institutions have been looking for modern solution to replace and improve their legacy systems. These kind of solutions require high investments, being able to use the reengineering process in these cases. A maner to modify these systems is through reengineering of their interfaces, by wrapping of their logic. This technique preserves the native environment of system and its functionalities, reducing in time and cost the reengineering process. To support the migration of legacies systems in a general way, there is an Interface Reengineering Process (IRP), whose accomplish the wrapping of its functionalities and connect them with a new user Web interface. This Web interface connects itself with the identified components of the legacy system following the special resources that they offer. The IRP is summarized by the study of the interface and logic of the system. In this way, it possible to accomplish the system organization for the wrapping to be done, which is composed by the legacies functionalities covered by a new software layer. This new layer makes possible the communication with the new user interface, which has developed according to the usability criteria. The systems used as case studies were developed using Delphi environment, with or without object orientation characteristics. In this work only systems developed without object orientation characteristics are presented in details. With the use of the new process proposed here, the interface can be developed in any paradigm, while the legacy code remains as the original, simplyfing the system maintenance. / Com a evolução tecnológica e com a crescente utilização da Internet, empresas e instituições governamentais desejam migrar seus sistemas desenvolvidos com recursos computacionais antigos (legados) para mais modernos. No entanto, essa é uma tarefa que requer investimentos elevados, podendo o processo de reengenharia ser utilizado nesses casos. Uma forma de modificar esses sistemas é por meio da reengenharia da sua interface, através do empacotamento de sua lógica (wrapping). Essa técnica preserva o ambiente nativo do sistema e suas funcionalidades, reduzindo em tempo e custo o processo de reengenharia. Para apoiar a migração de sistemas legados propõe-se um Processo de Reengenharia de Interface (PRI) que apóia a migração de sistemas legados de maneira geral, realizando o empacotamento de suas funcionalidades e acoplando uma nova interface do usuário para Web. A nova interface do usuário será disponibilizada para Web, que se comunica com os componentes identificados no sistema legado de acordo com os recursos especiais que eles oferecem. O PRI resume-se no estudo da interface e da lógica do sistema. Com isso, pode-se realizar a organização do sistema para que seja realizado seu empacotamento, que corresponde ao revestimento das funcionalidades legadas por uma camada de software, viabilizando a comunicação com a nova interface do usuário, desenvolvida segundo critérios de usabilidade. Os sistemas utilizados como estudo de casos são desenvolvidos no ambiente Delphi com ou sem características da orientação a objetos. Neste trabalho somente os desenvolvidos sem características da orientação a objetos são apresentados em detalhes. Com a aplicação desse processo, somente a interface passa a ser desenvolvida em um outro paradigma, mas o código legado permanece como o original, facilitando a tarefa dos mantenedores do sistema.
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Posouzení železobetonového prvku použitím pravděpodobnostního přístupu / Probability based method of reinforced concrete member approachSigmund, Václav January 2014 (has links)
This thesis deals with the assessment of reinforced concrete elements using a fully probabilistic approach and its comparison with the method of partial reliability factors. This method of ultimate limit state design will be applied to determine the ultimate limit state of reinforced concrete column loaded by a combination of "N + M", the normal force and bending moment. Specifically, I will solve a circular reinforced concrete column with and without the effect of wrapping unidirectional carbon fiber fabrics and comparing the theoretically determined values with the values determined by experiment, which is carried out at the Institute of Concrete and Masonry Structures Faculty of Civil Engineering of the Technical University in Brno.
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Integrace hlasových technologií na mobilní platformy / Integration of Voice Technologies on Mobile PlatformsČerničko, Sergij January 2013 (has links)
The goal of the thesis is being familiar with methods a techniques used in speech processing. Describe the current state of research and development of speech technology. Project and implement server speech recognizer that uses BSAPI. Integrate client that will use server for speech recognition to mobile dictionaries of Lingea company.
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Structural Performance and Corrosion Resistance of Fiber Reinforced Polymer Wrapped Steel Reinforcing BarsLess, Thomas Matthew 08 August 2013 (has links)
No description available.
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Structure and optical properties of complex aggregate-structures of amphiphilic dye-systemsAl-Khatib, Omar 18 October 2012 (has links)
In dieser Arbeit werden Untersuchungen an selbstorganisierten, tubulären J-Aggregaten amphiphiler Cyaninfarbstoffe, 3,3’-bis(2-sulfopropyl)-5,5’,6,6’-tetrachloro-1,1’-dioctylbenzimidacarbocyanine, im Weiteren C8S3 genannt, dargestellt. Ziel der Arbeit ist es an die Aggregate eine Lage Polyelektrolyte zu adsorbieren, sowie nachzuweisen, dass diese Methode geeignet ist, um einen Energietransfers zwischen dem Aggregat und funktionellen Gruppen in der Adsorbatschicht zu erreichen. Die tubulären Aggregate sind supramolekulare Strukturen, die sich spontan und selbstorganisiert aufgrund des amphiphilen Charakters der Cyaninfarbstoffe in wässrigen Lösungen bilden. Die Farbstoffe ordnen sich in einer Doppelschicht an, die die Wand der Röhren bildet mit etwa 13 nm Durchmesser und Längen bis zu 1 µm und mehr. Die Aggregate bilden exzitonische Anregungen aus, die sich in einer typischen Rotverschiebung (J-Aggregat) der optischen Absorption sowie einer charakteristischen Aufspaltung in mehrere schmale Banden zeigt. Die negative Oberflächenladung der Aggregate wird genutzt, um positiv geladene Polyelektrolyte (PE) anzulagern. Drei exemplarische PE, die sich in Ladungsdichte und Persistenzlänge unterscheiden, werden untersucht. In allen drei Fällen ist es gelungen Aggregate mit einer 2-3 nm dicken Polyelektrolytschicht zu umhüllen, wobei die molekulare Ordnung der Aggregate nur geringfügig gestört wird. Durch Einsatz von Farbstoffdotierten Polyelektrolyten konnten Experimente zum Nachweis des Förster-Energietransfer durchgeführt werden. Die Farbstoffdotierungen sind kovalent an die PE gebunden, wodurch sie in der PE-Umhüllung lokalisiert sind. Durch Wahl geeigneter Farbstoffe konnte ein Energietransfer vom Farbstoff (Donator) zum Aggregat als auch umgekehrt vom Aggregat zum Farbstoff (Akzeptor) nachgewiesen werden. Es ergeben sich hohe Transferraten, da die Farbstoffe in der PE-Schicht deutlich dichter am Aggregat liegen, als die theoretisch berechneten Förster-Radien. / The following dissertation deals with investigation on tubular J-aggregates of amphiphile cyanine-dyes, 3,3’-bis(2-sulfopropyl)-5,5’,6,6’-tetrachloro-1,1’-dioctylbenzimidacarbocyanine (C8S3). Aim of this work is to adsorb a layer of polyelectrolyte on C8S3-aggregates and to proof the capability of this method to establish an energy-transfer between the aggregate and functional groups in the adsorbate-layer. The tubular aggregates are supramolecular structures, that form entirely spontaneous and self-organized due to amphiphilic character of the investigated cyanine-dye derivative in aqueous solution. These dyes arrange themselves in a double-layer, assembling the hull of the tubular structure, with outer tube-diameters of approximately 13 nm and length of more than 1 µm. Due to the regular and dense arrangement of the dyes excitonic excitation establishs with the structure, that causes a J-aggregate typical red-shift in absorption and a characteristic band-splitting. The aggregates offer a negative surface-charge in aqueous solution. This is utilized to adsorb oppositely charged polyelectrolytes (PE) by electrostatic adsorption. It is shown exemplarily for three different kinds of PE that differ in charge-density and persistence-length. In all three cases a successful PE-wrapping of 2-3 nm thickness has been performed. The molecular order within the aggregates has been disturbed only weakly. Dye-labelled PE experiments proof Förster-energytransfer. The dye-labels are covalently bound to PE, fixing and localizing the labels in the wrapping-layer. With appropriate dye-labels an energy-transfer from labels in the coating (donor) towards the aggregate and vice versa, from aggregate to the dye-labels (acceptor) has been revealed. Caused by the localisation of the labels within the PE-coating, the distances of aggregate and label are always smaller than the theoretically calculated Förster-radii, resulting in a high efficiency of the transfer-rates.
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Phase Unwrapping MRI Flow Measurements / Fasutvikning av MRT-flödesmätningarLiljeblad, Mio January 2023 (has links)
Magnetic resonance images (MRI) are acquired by sampling the current of induced electromotiveforce (EMF). EMF is induced due to flux of the net magnetic field from coherent nuclear spins with intrinsic magnetic dipole moments. The spins are excited by (non-ionizing) radio frequency electromagnetic radiation in conjunction with stationary and gradient magnetic fields. These images reveal detailed internal morphological structures as well as enable functional assessment of the body that can help diagnose a wide range of medical conditions. The aim of this project was to unwrap phase contrast cine magnetic resonance images, targeting the great vessels. The maximum encoded velocity (venc) is limited to the angular phase range [-π, π] radians. This may result in aliasing if the venc is set too low by the MRI personnel. Aliased images yield inaccurate cardiac stroke volume measurements and therefore require acquisition retakes. The retakes might be avoided if the images could be unwrapped in post-processing instead. Using computer vision, the angular phase of flow measurements as well as the angular phase of retrospectively wrapped image sets were unwrapped. The performances of three algorithms were assessed, Laplacian algorithm, sequential tree-reweighted message passing and iterative graph cuts. The associated energy formulation was also evaluated. Iterative graph cuts was shown to be the most robust with respect to the number of wraps and the energies correlated with the errors. This thesis shows that there is potential to reduce the number of acquisition retakes, although the MRI personnel still need to verify that the unwrapping performances are satisfactory. Given the promising results of iterative graph cuts, next it would be valuable to investigate the performance of a globally optimal surface estimation algorithm.
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Rehabilitation of Exterior RC Beam-Column Joints using Web-Bonded FRP SheetsMahini, Seyed Saeid Unknown Date (has links)
In a Reinforced Concrete (RC) building subjected to lateral loads such as earthquake and wind pressure, the beam to column joints constitute one of the critical regions, especially the exterior ones, and they must be designed and detailed to dissipate large amounts of energy without a significant loss of, strength, stiffness and ductility. This would be achieved when the beam-column joints are designed in such a way that the plastic hinges form at a distance away from the column face and the joint region remain elastic. In existing frames, an easy and practical way to implement this behaviour following the accepted design philosophy of the strong-column weak-beam concept is the use a Fibre Reinforced Plastic (FRP) retrofitting system. In the case of damaged buildings, this can be achieved through a FRP repairing system. In the experimental part of this study, seven scaled down exterior subassemblies were tested under monotonic or cyclic loads. All specimens were designed following the strong-column weak-beam principal. The three categories selected for this investigation included the FRP-repaired and FRP-retrofitted specimens under monotonic loads and FRP-retrofitted specimen under cyclic loads. All repairing/retrofitting was performed using a new technique called a web-bonded FRP system, which was developed for the first time in the current study. On the basis of test results, it was concluded that the FRP repairing/retrofitting system can restore/upgrade the integrity of the joint, keeping/upgrading its strength, stiffness and ductility, and shifting the plastic hinges from the column face toward the beam in such a way that the joint remains elastic. In the analytical part of this study, a closed-form solution was developed in order to predict the physical behaviour of the repaired/retrofitted specimens. Firstly, an analytical model was developed to calculate the ultimate moment capacity of the web-bonded FRP sections considering two failure modes, FRP rupture and tension failure, followed by an extended formulation for estimating the beam-tip displacement. Based on the analytical model and the extended formulation, failure mechanisms of the test specimens were implemented into a computer program to facilitate the calculations. All seven subassemblies were analysed using this program, and the results were found to be in good agreement with those obtained from experimental study. Design curves were also developed to be used by practicing engineers. In the numerical part of this study, all specimens were analysed by a nonlinear finite element method using ANSYS software. Numerical analysis was performed for three purposes: to calculate the first yield load of the specimens in order to manage the tests; to investigate the ability of the web-bonded FRP system to relocate the plastic hinge from the column face toward the beam; and to calibrate and confirm the results obtained from the experiments. It was concluded that numerical analysis using ANSYS could be considered as a practical tool in the design of the web-bonded FRP beam-column joints.
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