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594 Uppsatser om Fire Dynamics Simulator (FDS) - Sida 34 av 40

Analys av off-design prestanda för ett absorptionskylsystem

This master thesis project at KTH is performed in the Mechanical and Aerospace Engineeringdepartment at University of Florida (UF). The thesis is a small part of a gas turbine researchproject where a vapour absorption refrigeration system (VARS) and a high pressure regenerativeturbine engine (HPRTE) are integrated together. The main objective is to build a computermodel of the VARS. The computer model is supposed to be used to analyse the off-designperformance of the VARS and should also be easy to integrate as a subroutine in a more complexsystem model. To model the VARS some knowledge of the absorbent/refrigerant mixture had tobe well known, in this case a mixture of ammonia and water.

När elever interkulturella kompetens blir en styrka : En kvalitativ studie om nyanlända elevers upplevelse av den sociala interaktionen i en mångkulturell skola

This study investigates how social interaction affects newly arrived pupils? views on their study situation in the Swedish educational system. The aim is to give a contribution to the discussion on the notion of including ?the Other? in educational practice in multicultural schools. Semi-structured group interviews were conducted to explore how the intercultural perspective and the theory of inclusion can be used to explain the dynamics of social interaction.

Förutsättning för implementering av ett ERP-system

Syftet med detta arbete var att kartlägga inköparens behov vid implementeringsprocessen av ett nytt System på Klintberg & Way. Det framtida affärssystemet heter Microsoft Dynamics Navision 4.0. Till det nya affärssystemet ska även ett nytt IT-verktyg implementeras för att underlätta arbetet för inköparna. Detta logistikprogram heterAdvanced Forecasting & Procurement (AFP) ochär en tilläggsmodul till affärssystemet. Inköparna får med hjälp av AFP ett beställningsförslag på vilka lagerförda artiklar som ska beställas och hur stor kvantitet som ska beställas hem.Som metod valdes att studera befintliga arbetsprocesser på Klintberg & Way samt att delta i implementeringsprojektet på företaget.Jag valde att intervjua personer från inköp och personer som har någon anknytning till inköpsavdelningen som påverkar deras arbetsrutiner.

Tillämpning av en markprofilmodell för hydrologiska beräkningar i avrinningsområdesskala

There is a great need to reduce nutrient leaching from arable land into lakes and oceans. By using several different types of models it has previously been possible to describe nutrient losses in a catchment area with a minimum unit of sub-catchment level. At present, it is instead desirable to model a smaller catchment with an opportunity to re-connect the results to the corresponding fields in the catchment. Such models already exist but they are not fully able to properly describe Swedish conditions and land characteristics in our region.With the approach of creating such a model, SLU has developed a project with this work as its first stage. The model is expected to be created under the working name SWE-model which stands for Soil Water Environment and is in this first stage supposed to apply the SOIL model in catchment scale. During the procedure to describe the first step in the process of developing such a model adapted to Swedish conditions and which works in the catchment scale with an area of about 10-30 km2, focus has been set on calculating the transport of water flow from different hydrological response units. Regardless of the processes occurring in the soil after the water has been added, it is assumed that all the water which flows from each simulated unit is drained.In the first step the hydrologic response units were identified based on land use and soil type in the study area. With the help of a script with functions that retrieve and transform data, certain units were chosen for simulation. The script was also created in this project. Finally, the model results were aggregated and summarized for each unique unit, for each sub-catchment, and also for the whole catchment.From the results it is possible to see similarities in the flow dynamics between modeled and measured data. The efficiency coefficient has been calculated to correspond to the mean of the measured values for the whole simulation period. With an automated calibration process the model should be able to perform better. The volume error gives an indication of overestimation from the model..

Integrering av gamification i reklam : utmaningar, möjligheter och problem

In this study, we have explored a new area called ?gamification? ? a word and concept that was first introduced on the Internet autumn 2010. Gamification concerns integrating game design, with emphasis on game mechanics and game dynamics, into non-gaming contexts ? such as marketing. At its basic definition, it concerns the process of transforming all kinds of activities into games.

En för alla, alla för en : Vad är sammanhållning och vilken innebörd har begreppet sammanhållning för SISU`s idrottskonsulenter.

The purpose of this study was to find out how SISU reason about cohesion with respect to its own operations, as sports consultants.There is no previous research on how sports consultants using cohesion as a pedagogical tool. However, there is research on cohesion linked to sport. Earlier research sees cohesion as a multidimensional phenomenon. This means that multiple factors determine the experience of cohesion. Such factors include how how-knit the team or group are, individual and joint objectives and that the individuals share common experiences.

Målsättning, prognostisering och resursfördelning i en budgetstyrd bank respektive budgetlös bank: En fallstudie av två svenska banker på kontorsnivå

Speaking of budget and budgeting is almost as adding fuel to the fire. The subject evokes a lot of emotions, both positive and negative. Some might consider budgets as a bureaucratic process that won?t lead to any good. Others might find budgets as extremely helpful and necessary in a company?s planning process.

Varför personalekonomi?

Chapter 6 of the Ch?ndogya Upani?ad has often been treated in works on early Indian philosophy, as well as in some comparative studies on color symbolism. Attempts to place it in a larger framework against the background of late Vedic religion are, however, few, the rationalistic and ?tradition-challenging? appearance of the text having repeatedly been emphasized. But the doctrine contained in the text ? a cosmologic teaching on the three elements constituting the universe, each being characterized by a color (red, white, black) ? and their microcosmic counterparts in the human body, does have some clear affinities to the worldview of the Br?hma?as and ?ra?yakas, which posits a series of similar correlations (bandhu-) between macro- and microcosmos.

Förfädernas berg? : en tolkning av fornborgen på Halleberg

The essay deals with the hill-fort on the mountain Halleberg, Sweden, its wall design, functionality, dating and its possible function as a central location and a place of worship of the ancestors.The Halleberg hill-fort consists of a 1500 meters long at times cohesive stonewalls which together blocked the mountain from its surroundings. Hallberg's natural vertical scree and cliffs along with the masonry blocked the whole mountain from the surroundings.The hill-forts, with few exceptions are largely not investigated archaeologically and its functionality and role in the ancient society is based on outdated research on the subject. The current archaeological interpretation is that hill-forts served as temporary defense in times of unrest or served as center of power for a social elite. The prevailing view in the archaeological sphere is that the hill-forts had a variety of functions and that its functionality and role in ancient society has varied.Halleberg´s strongest wall sections are at the mountain's south-eastern part where the natural driveway, Storgårdsklev is located. Along with the massive masonry of the walls in Bokedalen Storgårdsklev functioned as the hill-forts main entrance.

Järnburens renodlade revsion.

Chapter 6 of the Ch?ndogya Upani?ad has often been treated in works on early Indian philosophy, as well as in some comparative studies on color symbolism. Attempts to place it in a larger framework against the background of late Vedic religion are, however, few, the rationalistic and ?tradition-challenging? appearance of the text having repeatedly been emphasized. But the doctrine contained in the text ? a cosmologic teaching on the three elements constituting the universe, each being characterized by a color (red, white, black) ? and their microcosmic counterparts in the human body, does have some clear affinities to the worldview of the Br?hma?as and ?ra?yakas, which posits a series of similar correlations (bandhu-) between macro- and microcosmos.

Restoring biodiversity in degraded secondary rain forest in Sabah, Malaysia : natural regeneration of trees after restoration treatments

Many tropical rain forests has been lost or degraded as a result of human activities and environmental factors. Since the level of biodiversity is high in the tropics, maintaining these areas is of great importance. Forests like these are often assumed to benefit from forest restoration and rehabilitation. The INIKEA project area in Eastern Sabah, Malaysian Borneo, aims to improve biodiversity and/or species richness in the degraded forest through enrichment planting with indigenous species. The objective of this thesis was to evaluate how different treatments (liberation, gap-cluster planting and line planting) affect the biodiversity of natural regeneration in different forest types in the Rain forest Restoration Experiment, located in the INIKEA project area.

Dynamiska egenskaper hos håldäcksbjälklag belastade med gångtrafik

Concrete floors have traditionally had no problems with annoying vibrations. However with the demand for larger spans the floors need to be made more slender with a higher degree of utilization and lower mass. Therefore new floors may have problems with vibration serviceability. This thesis studies the vibration characteristics of hollow core slabs. The analysis was made in the finite element program Ansys. The hollow core slab was subjected to a varying force simulating one person walking across the slab.

Definition av stötdämpares fyllnadsgrad

Shock absorber units play a key role in establishing the driving dynamics and performance of automobiles. Öhlins Racing has manufactured high-tech automotive shock absorbers for over 30 years. Öhlins Racing?s advanced technology has contributed to over 200 world championships in automobile racing. Öhlin?s manufacturing process has long utilized automated fluid filling equipment during the final shock absorber unit assembly stage. The filling process consists of vacuum pumping the shock absorber unit and subsequent transfer of fluid. Vacuum pumping is necessary to remove residual air from the shock absorber unit prior to initiating the liquid filling stage. The presence of undesirable gases drastically compromises the performance of a shock absorber. The filling degree, defined as the final ratio of air to oil, is determined by the specific filling protocol as well as the specific equipment utilized.The current investigation aims to develop a viable technique to accurately determine residual air content in shock absorber units. If the filling degree can be appropriately quantified for a specific manufacturing process, then the air/oil ratio may be quantitatively related to shock absorber performance. The utilized measurement method must be completely integrated into the manufacturing process to guarantee shock absorber performance specifications according to the manufacturer?s standards. By utilizing the measurement method developed in this work, the manufacturing process, manufacturing equipment and product specifications can all be tailored to provide improved filling conditions.The developed measurement method provides accurate quantification of the filling degree under a wide range of processing conditions. The method establishes the relative quantity of air in the shock absorber unit by performing in-situ compressibility tests. The fill ratio can be controlled and varied by manipulating the vacuum pressure exerted during the filling process. Performance tests, however, indicate no correlation between filling degree and unit performance..

Trapphus i träplattform för CBBT

Industrialization of construction is by some considered to be a solution to the building industry's problems about the lack of quality, high production costs, low productivity and poor environmental adaptation. Meanwhile, industrialized construction partly earned a bad reputation after the million housing program. As large-scale projects where promoted during this period, it worked very well to use the technique of construction elements. In the mid seventies though, criticism arose which claimed that the aesthetic qualities had been deprived in the corporates effort to make housing production as efficient as possible.Tyréns, Derome and CBBT (centre for building and housing in wood) cooperates in a development project to develop a building system for 4-8-storey buildings, consisting of three platforms: a technology platform, an IT platform and a processing platform. The technology platform consists of flexible, industrially built flat modules of wood and from this platform the subsystem stairwells, is broken out.

Emma Goldman : Mot en postindividualistisk teori om gemenskaper

Denna uppsats undersöker den feministiska agitatorn och anarkisten Emma Goldman i syfte att identifiera en radikal teori om samarbete och gemenskaper som tillåter individuell frihet utan konflikt med det sociala. Framförallt fokuserar den på Goldmans upplevelser av Sovjetunionen och det Spanska inbördeskriget, och på hennes idé om den »konstruktiva revolutionen « som hon utvecklar i interaktion med dessa. Själva undersökningen sker i fyra delar med fyra olika fokus: individen, massan, revolutionen och organisationen i den ordningen. Som material används framförallt Goldmans två böcker om Sovjetunionen ? med fokus på efterordet i den senare boken ? samt textsamlingen Vision On Fire med Goldmans texter om det spanska inbördeskriget och den anarkistiska organiseringen där.

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