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2220 Uppsatser om NASA task load index - Sida 54 av 148

Skador på parkeringsdäck av betong. Skadeorsaker och reparationsåtgärder

This report is a study in voltagelevel in connection with regeneration of brake energy from the tramtype M31 in Gothenburg.In the act of braking, the tram M31 uses electrical braking where the electrical motors generates energy and if possible send it back to the overheadline, where other trams in the nearby can use this regenerated energy for its own driving force. In cases where no other energyconsumers are located in the same section, there is a resistance witch task is to convert this energy into heat. The regulation of this resistance appears to cause an increase in the voltagelevel into far too high levels.Investigations of the trams regulationequipment and its construction have been done. Further have measurements on the overheadline been performed in order to map the voltagevariations during a longer period of time.The result have been showing that the voltagelevel during regeneration often is as high as 880V-920V, more extreme values have not been observed in a large scale. The values are especially high compared to the nominal voltagelevel.

Utveckling av erfarenhetsåterföring - I samarbete med AF Bygg Göteborg AB

This report is a study in voltagelevel in connection with regeneration of brake energy from the tramtype M31 in Gothenburg.In the act of braking, the tram M31 uses electrical braking where the electrical motors generates energy and if possible send it back to the overheadline, where other trams in the nearby can use this regenerated energy for its own driving force. In cases where no other energyconsumers are located in the same section, there is a resistance witch task is to convert this energy into heat. The regulation of this resistance appears to cause an increase in the voltagelevel into far too high levels.Investigations of the trams regulationequipment and its construction have been done. Further have measurements on the overheadline been performed in order to map the voltagevariations during a longer period of time.The result have been showing that the voltagelevel during regeneration often is as high as 880V-920V, more extreme values have not been observed in a large scale. The values are especially high compared to the nominal voltagelevel.

Projekteringsfel. Hur påverkas byggandet av fel tillkomna i projekteringen?

This report is a study in voltagelevel in connection with regeneration of brake energy from the tramtype M31 in Gothenburg.In the act of braking, the tram M31 uses electrical braking where the electrical motors generates energy and if possible send it back to the overheadline, where other trams in the nearby can use this regenerated energy for its own driving force. In cases where no other energyconsumers are located in the same section, there is a resistance witch task is to convert this energy into heat. The regulation of this resistance appears to cause an increase in the voltagelevel into far too high levels.Investigations of the trams regulationequipment and its construction have been done. Further have measurements on the overheadline been performed in order to map the voltagevariations during a longer period of time.The result have been showing that the voltagelevel during regeneration often is as high as 880V-920V, more extreme values have not been observed in a large scale. The values are especially high compared to the nominal voltagelevel.

Krypsättningar i lera ? en jämförelse mellan två datorprogram

This report is a study in voltagelevel in connection with regeneration of brake energy from the tramtype M31 in Gothenburg.In the act of braking, the tram M31 uses electrical braking where the electrical motors generates energy and if possible send it back to the overheadline, where other trams in the nearby can use this regenerated energy for its own driving force. In cases where no other energyconsumers are located in the same section, there is a resistance witch task is to convert this energy into heat. The regulation of this resistance appears to cause an increase in the voltagelevel into far too high levels.Investigations of the trams regulationequipment and its construction have been done. Further have measurements on the overheadline been performed in order to map the voltagevariations during a longer period of time.The result have been showing that the voltagelevel during regeneration often is as high as 880V-920V, more extreme values have not been observed in a large scale. The values are especially high compared to the nominal voltagelevel.

Undersökning av linjespänning vid återmatande bromssystem i spårvagn M31

This report is a study in voltagelevel in connection with regeneration of brake energy from the tramtype M31 in Gothenburg. In the act of braking, the tram M31 uses electrical braking where the electrical motors generates energy and if possible send it back to the overheadline, where other trams in the nearby can use this regenerated energy for its own driving force. In cases where no other energyconsumers are located in the same section, there is a resistance witch task is to convert this energy into heat. The regulation of this resistance appears to cause an increase in the voltagelevel into far too high levels. Investigations of the trams regulationequipment and its construction have been done. Further have measurements on the overheadline been performed in order to map the voltagevariations during a longer period of time. The result have been showing that the voltagelevel during regeneration often is as high as 880V-920V, more extreme values have not been observed in a large scale. The values are especially high compared to the nominal voltagelevel.

Webbläsartillägg för inhämtning av data

Speedledger is a company that is working to automate electronic accounting for businesses, organizations and associations.In the current situation bank data is sent from the users internet bank to Speedledger via a virtual printer driver. The driver transforms the web page into a PDF and sends it to a server for interpretation.The problem is that PDF is not created for this sort of data transfer and makes the interpretation of data is very problematic.The goal of the thesis is to study whether there is a possibility to develop a browser add-on that can retrieve information on the customer's banking page and send it on to Speedledgers server for interpretation. My task was to implement a add-on for one of the three major browsers Mozilla Firefox, Google Chrome or Microsoft Internet Explorer, and then study the possibility of implementing it to the other two by reading the documentation.What I concluded was that it is possible to implement for all the three browsers. However, the techniques will differ slightly when developing these add-ons.  .

En empirisk studie av biståndets effekt på u-länders ekonomiska utveckling 1975-1999

The aim of this paper is to analyze aid, grouped into sectors, and its effect on growth in developing countries, to find out which type of aid has had the most positive effect on growth. We compiled a regression analysis based on panel data over 81 developing countries from 1975-1999. In our first regression we considered and group countries by institutional quality, in the other we considered and group countries after regional differences. As a measure on institutional quality we used the KKZ-index. The principal aim of this paper was to find out what kind of aid is the most efficient in its influence on growth in LDC?s.

Bedömningsgrunder och reningskrav för avloppsreningsverk, 25-2000 pe, i Laholms kommun

The aim of this project was to look into ten small sewer systems in the municipality of Laholm, in Sweden, in order to work out common assessment grounds for them. The sizes of the systems for purification of wastewater were within the range of 25 to 2000 population equivalents. Our method was to study literature, the laws and regulations applicable and the files at the municipality. The conclusion is that every sewer system is different and every situation is unique. We concluded that based on laws and assessment grounds sewer systems equal in size and pollution load ought to have similar demands attached to them.

Olika personlighetsdrag och dess förhållande till prosocialt beteende. : En enkätundersökning mellan TIPI och PTM.

Genom webbaserade enkäter har data insamlats för att undersöka huruvida det finns en korrelation med de olika personlighetsdragen inom The Big Five och olika dimensioner av prosocialt beteende. Till detta utformades en enkät genom sammanslagning av Ten Item Personality Inventory (TIPI) och Prosocial Tendency Measure (PTM), där index togs ut för alla olika dimensioner. Respondenter rekryterats genom ett tillgänglighetsurval (N= 79, varav 24 stycken män, M= 39,6 år, SD= 13.6, 55 stycken kvinnor, M= 40.1 år, SD= 13.6 ). Totalt av urvalet var 13,8 procent uppvuxna i en storstad, 28,8 procent uppvuxna i småstad och 57,5 procent inom landsbygd. Inom urvalet hade 10 procent en grundskoleutbildning, 38,8 procent gymnasieutbildning, och 51,3 högskole- eller universitetsutbildning.

Har ni någon bra kärleksroman? : en studie av indexering av skönlitteratur vid stadsbiblioteken i Malmö och Mölndal

Har ni någon bra kärleksroman? : en studie av indexering av skönlitteratur vid stadsbiblioteken i Malmö och Mölndal. Have you got a good love story? : a study of fiction indexing at the public libraries of Malmö and Mölndal.The thesis analyses interviews with users of two Swedish public libraries to find aspectsof fiction important to users and consequently to be considered when indexing fiction.Descriptions of a novel by 50 users at each library are compared to the index terms usedfor these novels. For the analysis, the authors propose a model of their own based onAnnelise Mark Pejtesen's AMP system for fiction indexing.

Automatiserad laddning och plundring mellan magasin

This thesis has been carried out within the bachelor program for mechanical engineering at Karlstad University in collaboration with BAE Systems in Karlskoga. The purpose with this work was to design a mechanism and associated parts for loading and unloading of shots between primary and secondary magazine in BAE's new 40mm's ship gun.Parts designed or redesigned among other things a transfer mechanism for shot at loading and unloading, well as a hatch mechanism which makes the shots do not fall out of the primary magazine when making separate use. Various important details have been designed to maintain a good functionality of the mechanism.The construction work has mainly been carried out in the CAD software Solid Edge and its associated FEM module. The construction work has also been carried out on rough calculations for constructed details in order to ensure that they meet the stringent requirements of military use in tough marine environment. Two of the most critical parts of the structure where analyzed with the FEM module for estimating the stresses in the material at the applied load.The final design, which is a result of the thesis, meets the requirement specification and the set targets.

Modellering och simulering av hovrande helikopter

At the department of Electronic Warfare Assessments at the Swedish Defence Research Agency in Linköping one of the activities is modelling and simulation of the duel between a robot and a target. The aim with this Master's thesis is to develop a simulation model of an hovering helicopter. First a theoretical description of the forces and moments acting on an helicopter is given. Then the equations of motion are derived. These equations are simplified to be valid only for a hovering helicopter and the result is a mathematical model.

Slutförvar av förbrukat kärnbränsle - studie av opinionen i Malå- och Östhammars kommun

The aim of this study is to describe and understand the reasons to why people choose to become foster parents. By using the theory of action we wanted to investigate their intentions rather than their motives. The questions we wanted to answer where: How do the foster parents describe their reasons for becoming a foster home? What reasons do they give fore keeping on being foster parents? How do they comprehend their task and the fulfilling of it? The study was performed by utilizing qualitative interviews with five foster parents, four women and one man. In the analysis we used the theory of action as a theoretical perspective.

En precisionsstudie av förstärkt verklighet som positioneringsverktyg

This study investigates augmented reality using third person perspective and what precision can be achieved by using this method. There have been prior studies in regards to precision using augmented reality, however studies using third person perspective is scarce. This study presents a solution using a static camera capturing the user as well as the plane to augment from behind. This augmented image is then transferred to a handheld device that is held by the user. Using this method the user will be free to manipulate and work with the plane without removing the device that captures the scene, a common problem when using visual reference markers in augmented reality.

Svensk skuldsättning: lagom eller värdeförstörande? : en studie av skuldsättningen i OMX 30

Uppsatsen har sitt ursprung i den aktuella diskussion i media som hävdat att svenska bolag inte använder sig av en tillräckligt hög skuldsättning. Författarna har avsett att testa om så verkligen är fallet, både utifrån antagandet att en optimal kapitalstruktur existerar och genom jämförelse med branschsnitt i USA. Vad beträffar framräknandet av den optimala kapitalstrukturen har två modeller använts, båda framtagna i enlighet med Aswath Damodarans teorier i ämnet. Den ena tar sin utgångspunkt i att minimera företagets WACC medan den andra utnyttjar en APV för att maximera bolagsvärdet. Jämförbara amerikanska branschsnitt har tagits från Aswath Damodarans hemsida.

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