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4467 Uppsatser om High-tech - Sida 11 av 298
Framtidens energilagring : en studie av befintliga samt potentiella metoder fo?r lagring av fo?rnybar el pa? ett ha?llbart sa?tt
In today?s society there is an increasing demand for renewable energy sources such as sun and wind power. These sources are intermittent, and energy storage is therefore needed to ensure a constant power supply. This report compares pumped hydro energy storage (PHES), compressed air energy storage (CAES), flywheels, batteries, super magnetic energy storage (SMES) and hydrogen energy storage.The opportunities for further development are limited for PHES and CAES in comparison with the other technologies. Lithium-ion batteries and hydrogen energy storage are considered to have the most potential in the future.
Introduktionskurs, underprissättning och institutionellt ägande : samband mellan prissättning och ägande vid en börsintroduktion
Who would not like a profit of more then 95 % in a day? Investors in Sweden had thatopportunity, if they had bought a certain stock on the primary market and sold it on the firsttradable day at the Stock Exchange. Most of that profit fell into the hands of institutionalinvestors. The reason for this extraordinary profit was the underpricing of that specific stockduring its initial public offering (IPO).Our report aims to analyze the relationship between offer price, underpricing and theownership structure of stocks. Our investigation is based on all IPO?s on the Stockholm stockexchange during the years between 2000 and 2005.
Kvalitetskontroll av trafikmätningssystem ? En studie om noggrannheten hos induktiv slinga, slang, KomFram, video och radar i olika trafikmiljöer
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.
Precommercial thinning stumps´susceptibility to Heterobasidion spp : a comparison between high and low Norway spruce and birch stumps : a measuring of the efficacy of Phlebiopsis gigantea stump treatment
Each year, Heterobasidion spp. is a major cause of economic losses to forestry in the northernhemisphere, including Sweden. New results indicate that pre?commercial thinnings could be at riskfor Heterobasidion spp. infections.
Skötselförslag på utvalda nyckelbiotoper i Kalmar och Kronobergs län.
The objective of this study was to contribute with suggestions of nature preservation managements of selected forest objects of high nature values managed by the Swedish state-owned forest company Sveaskog. Many forests with high natural potential are relatively rare today due to modern forestry, where wood production is the main purpose. Sveaskog?s policy is to consider and to priority nature conservation on valuable objects. This assessment includes objects that in the future may develop into nature reserves.
Pojkar som inte lyckas i grundskolan
The purpose of this essay was to examine pupils who leave the Swedish nine-year compulsory school system without reaching the requirements for the Swedish senior high school, and then to compare with those who reach the requirements. I used the following questions to help me reach this purpose:- Where in life are those pupils who reached the requirements for the Swedish senior high school?- Where in life are those pupils who did not reach the requirements for the Swedish senior high school?- What differences are noticeable between these two groups?The method that I used to examine these questions was to send out a questionnaire to the pupils. I also tried to make an explanation to the results with the help of Erwin Goffmanns theories.The result of this essay shows that there is not a big difference between the two groups. They both did equally well after they finished the Swedish nine-year compulsory school..
The Trivial Pursuit: Den modererande effekten av kunskap och engagemang på utvärderingen av produkter med triviala attribut.
Research has concluded that meaningless differentiation with trivial attributes sometimes can be a successful strategy. However, the effect varies with respect to certain aspects such as the price of the product and the decision context. How the characteristics of the consumer influence the effect of trivial attributes has until now been unknown. This thesis investigates how the consumer?s level of knowledge and personal involvement influence the effects of trivial attributes on product preferences and product attitudes.
Högriskfonder kontra aktieindex : En studie av makrovariablers påverkan på olika fondalternativ
Abstract Title: High-Risk Funds vs. Mutual- Index FundsA study of macro -variables influence on different funds choice Level: Final assignment for Bachelor Degree in Business Administration Author: Moses Yokie & Bo Lemar Supervisor: Ogi Chun & Cheick Wagué Date: 2011-05-25 Aim: The purpose with this thesis is to compare two different types of mutual-index fond and a high-risk fund in relation to the macro variables. The purpose also includes an investigation about if an investor will receives a higher return on high-risk fund than on mutual-index fund in a 10 years period.Method: A quantitative method has been use in this study, where the information has been received from Morningstar. Microsoft Excel has been used to process the collected data in order to calculate the expected return and the risk measures. The result is presented in graphs and tables on the empirical capital, in order to analyse and compare it with the theories and the selected macro- variables to see if there will be any correlation. Conclusion: This research shows that there is no possibility that the macro-variable factors can benefit an investment on high-risk fund or on mutual-index fund in the short run.
Grad av marknadslösning och omfattning av formella åtgärder kring korruption : - en jämförande fåfallsstudie med syfte att pröva ett indikerat samband
This thesis is a study of the indicated connection between degree of market orientated solutions and range of formal actions against corruption in Swedish municipalities. The indicated connection points in the direction that municipalities with a high degree of market orientated solutions have a higher range of formal actions against corruptionthan municipalities with a low degree of market orientated solutions. In this thesis the indicated connection is studied by analyzing documents fromand interviewing representatives of two Swedish municipalities with differentdegree of market oriented solutions; Botkyrka municipality representing a lowdegree and Nacka municipality representing a high degree. The results of analyzed documents and interviews show the range of formal actions taken against corruption by the municipalities.The empirical results of this thesis is that Nacka municipality have a higher range of formal actions against corruption than Botkyrka municipality has, a result which corresponds with and confirm the indicated connection between high degree of market orientated solutions and high range of formal actions against corruption..
Att arbeta med ständig osäkerhet : En studie av High Reliability Organization
There are certain organizations that manage to handle risk in such a successful way that they almost stay error-free, in spite of the fact that they daily face the risks of accidents. These organizations are usually given the name High Reliability Organizations (HRO). While the most common example is that of a nuclear plant the variety of what organizations can fit into the category is extensive.The purpose of this study is to describe safety culture and theories about HRO and how these can be found in practise within an organization.This qualitative research uses influences of ethnography in its method. The ethnographical approach was picked due to the field of the study and the cultural context in which it is set.The results of the study identify a number of elements sorted into four themes. These themes are deemed compatible or non-compatible with relevant existing theories.
GIS-program för ruttplanering. En studie av nyttjandet av GIS-program för ruttplanering inom tekniska förvaltningar bland kommunder i västra Sverige
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.
Apputveckling : En studie av motsättningar mellan design- och användningspraktiker ur ett verksamhetsteoretiskt perspektiv
We live in a high tech era of electronic media, which is changing our lives (Giddens, 1999). Apps are examples of technologies that affect our lives. An interesting question in this context is what apps will have for significance; on one hand for the development of technology, and on other hand for humans? relation to technology. Since the development and change process are central issues in the science of education I will explore the development of applications.
Metod för urval av bäriga bestånd längs med bäriga vägar i Sveaskogs planeringsområde Råneå och Överkalix :
With increased need for flexibility in timber deliveries, forest roads become an important factor. The disintegration of roads during the spring season can be avoided if it is possible to rule cutting areas to stands with good carrying capacity along roads with good carrying capacity.
The goal with this work was to create a method to find the stands with high carrying capacity located near roads with high carrying capacity, and select them into a collection file. The method was based on Esri ArcGIS 9 and the tables that follow within that program.
The method resulted in four different themes:
1. Collections with GYL 100 that cross the bufferzon for 0, 1, 2 and 3 class roads. Result 36 collections.
2. Collections with GYL 100 and 200 that cross the bufferzon for 0, 1, 2 and 3 class roads.
Lean på Menyn - En fallstudie av en rörlig personalstyrkas påverkan på en implementering av lean i restaurangbranschen
Today, the management concept of lean has stretched far from its origins in the Japanese automobile industry. When reaching the Swedish restaurant industry, the conditions for a successful implementation of lean change as a result of the high employee turnover and the significant amount of part-time employees characteristic for the industry. Combined with a high-end service profile, these workforce characteristics seem inconsistent with some of the basic principles of lean. By conducting a case study, this thesis aims to investigate the effects of a variable workforce on the enablers for a successful implementation of lean in a high-end service industry. Using a theoretical framework consisting of enablers for an implementation of lean in services, the study finds that the variable workforce inhibits an implementation of lean by complicating the effects of traditional training, as well as the possibility of understanding the lean concept at all levels of the organization.
Framtidens gymnasieskola - En styrning utifrån ett modernistiskt eller senmodernistiskt perspektiv?
This empirical work and base has been to analyze the new high school reform that the Swedish government introduced as a statement 2008/09:199 about: Higher demand and quality within the high school. This statement became legal through the government vote in spring 2010. But above all it is the investigation (SOU 2008:27) that is the central piece for these new examination changes for high school students that will come into effect 1 of July 2011. The purpose and questions asked in this analyze has been if the reform takes its base in a modernistic (traditional) way or a late modern scientific perspective. And also to find out how these new quality amendments in the investigation makes visible about the high school and what the purpose are about the changes. When scientific theories in these analyze is placed against the reform, the result shows that the modernization process reflects more of a late modern aspect, which constantly reappraise in a changeable society.