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12179 Uppsatser om Range data - Sida 19 av 812
Prognostisering av sortimentsutfall från stående skog med hjälp av befintliga data : anpassat till Sveaskog Norrbottens planeringsprocess
This study in the subject of forest planning is made for Sveaskog and its aim is to develop tools that prognosticate outcome in terms of volumes per sort from not yet cut forest stands. The degree of detail is just to get reliable results for at least one months volumes, for Sveaskogs own forestland in the market region of Norrbotten that is about 100 000 m3fub. The course of action to accomplish this is regression analysis and the data consists of cut tracts on own forestland in Norrbotten during the years 2006, 2007 and 2008. That is a little more than 4 million m3fub. Two tools were made.
Förbättrad mätutrustning förminneselektronik
Saab Communication i Linköping sysslar med konsultverksamhet mot ett flertal nationella och internationella företag inom både den civila och militära sektorn. Fokus ligger på flyget med uppdrag inom telesystem, radiosystem, signaturanpassning, EMC, atmosfärisk påverkan mm.Hög tillförlitlighet är en viktig faktor inom flygburna system. Det innebär att diverse stråltester tillämpas på elektriska system och komponenter, exempelvis minnen. Det är viktigt att försäkra sig om att minnena i de flygburna systemen fungerar riktigt och att konfigurationsdata inte förloras.Målsättningen med examensarbetet är att anpassa ett datainsamlingsprogram för minneselektronik, från en redan existerande testutrustning. Arbetsuppgiften innebär följande:?Läsa/skriva till DRAM?Lagra data på moderkortet?Presentera data i LabVIEWTestutrustningen ska kunna läsa och skriva till testminnet, lagra data på moderkortet och slutligen presentera data i LabVIEW.
Den skogliga informationens roll i ett kundanpassat virkesflöde : en bakgrundsstudie samt simulering av inventeringsmetoders inverkan på noggrannhet i leveransprognoser till sågverk
This MSc thesis is divided into two parts. The first part deals with the need for information
from forest campartments selected for clear cutting, in connection with planning in an
integrated forest- and sawmill enterprise. A review of literature is followed by a case stud y,
where present conditions in a Swedish forest company are compared with current research in
the area. The seeond part consists of a simulation stud y, which aims at camparing the
accuracy of inventory estimates using different methods. The estimates are delivery forecasts,
covering one month consumptian of timber in a large sawmill.
Mikrosensorer i nätverk
The purpose of this thesis is to investigate the possibility to make small, cheap and ultra low power sensor platforms, connected in wireless networks for monitoring of home and industrial environments. The concept is based on ideas from our supervisor, Jerry Lindblom. The developed system consists of a generic platform for different sensors, a receiver and software. A GPRS module from RO Rollytech AB and a database from Gema Industri AB have been modified and used to demonstrate an example of a complete system. To the platform, it is possible to connect any resistive sensor and any sensor that can act as a switch.
Genetisk analys av data från fölbesiktning och jämförelse med resultat vid treårstest :
More than 1000 Swedish Warmblood foals are shown every year at foal inspections which are arranged around the country. Six traits are evaluated at these inspections: type, head-neck-body, correctness of legs, walk, trot and canter. No previous genetic studies have been done on the data from these evaluations. The purpose of this study was to do genetic analyses of the traits which are evaluated at foal inspections. The purpose was also to see if there are any correlations between the results of the foal inspections and the results from the tests of three-year-old horses.
Starka varumärken : strategiska konkurrensmedel och utvidgning?
The purpose with this essay was to examine and bring a deeper comprehension about brands as a phenomenon. We also wanted to study if strong brands could develop in to strategic competition means and by that expand their market range. To do this we used a qualitative method. We started by gathering a theoretical basis. This gave us a platform, which helped us learn more about the subject, brands.
Metoder för kartläggning och analys av nätförluster i lågspänningsnät
An important process for grid companies in order to reduce power losses in electricity distribution grids is to figure out where and how they appear. This report describes the factors that cause power losses in low voltage distribution grids and methods for how they could be measured and analyzed. Measurement data for consumed and injected energy were collected for twelve low voltage distribution grids owned by Gävle Energi AB in order to analyze the size of the power losses and how the measurement uncertainty affects the collected data. Then models of three of the grids were created in MATLAB in order to analyze the data and the power losses were calculated to be compared to the collected data. Curve fitting were also used as a method in order to analyze the power losses from collected data.The results show that the losses in the studied grids are low.
Dagvattensystem i järnbrott - Reducering av trycknivåer mha fördröjningsmagasin
IP-adresserna under IPv4 är inte tillräckliga och har på många delar i världen redan tagit slut. IPv6 erbjuder många fler tillgängliga adresser och övergången till protokollet har redan börjat. Det Gävlebaserade företaget Interlan erbjuder en tjänst som kontrollerar om kommuner och myndigheter i de nordiska länderna är nåbara via IPv6 samt om de är säkrade med DNSSEC. Denna rapport beskriver jobbet med att förbättra och göra deras tjänst anpassningsbar för flera länder. Processen som beskrivs är parametriseringen av skripten som samlar data, skapandet av en databas att lagra data i, och ändringar till hur data presenteras så att det går att lägga till flera länder..
Reasons for Voluntary Audit in Sweden
Background: The Swedish Parliament passed a law change in late 2010, suspending the former requirement for all Swedish incorporated companies to have an auditor. The new limit values allow the smallest incorporated companies to dismiss the auditor of the company (or not appoint one in the case of a newly started company). The opinions of abolishing mandatory audit vary, and little research has been done post to the law change. However, a new situation has arisen, meaning the optional choice of voluntary audit, for some companies.Aims and research questions: The aim of the thesis is to examine the reasons behind voluntary audit in Sweden, as well as what value companies, having chosen audit, see in their auditor. The following research questions have been used in order to fulfill the aim of the thesis: ?Why do small private owner-led incorporated companies in Sweden voluntarily choose audit?? and ?What value does the voluntarily chosen auditor add to the companies??Methodology: The research questions were formulated after reviewing relevant literature and scientific articles regarding the topic of voluntary audit, as well as the recent law change in Sweden.
Fördröjning och bortfall av nätverkskorrektioner : osäkerhetskällor för nätverks-RTK
Network RTK is a real-time technique for accurate positioning with Global Navigation Satellite Systems (GNSS). The technology means the use of correction data from a network of GNSS receivers with known positions (reference stations) to reduce the uncertainty in position for the user´s GNSS receiver (rover). However, this requires that the correction data can be transferred seamlessly to the user in real time. Commonly the corrections are transferred via mobile phones. The Swedish National Land Survey operates a nationwide Network RTK service, where users can receive correction data via GSM or mobile Internet (GPRS).
Fysiskt aktiva skolungdomar : En studie som belyser högstadielärares motivationsarbete
SummaryAim and research questionsThe purpose of the study is to examine how physical education (PE) teachers can work to increase young people?s interest in physical education but also physical activity in general.- How can PE teachers work to increase student?s interest in physical activity?- Does PE teachers believe that the student?s interest for sports is achieved according to the educations curriculum and in that case, how?- What problems can PE teachers encounter in their efforts to get young people motivated for physical activities during PE classes?MethodPrior to implementation of the study i reviewed on a lot of past research and got interested about the problem with unmotivated students. After this I looked for different theories that I could use for my study and settled with the KASAM theory by Aaron Antonovsky. The method applied in this study was a qualitative interview method. The aim was to find out how teachers work to motivate their students to be physically active and wanting to participate in PE classes.
Ljusspridningsvariationer i finpapperstillverkning
The purpose of this Master's thesis is to find possible explanations of variation in light scattering in a fine paper. Samples were collected from each second tambour during a time period of two weeks from a paper machine at MoDo Paper, Husum. Two data sets, consisting of 20 and 95 observations, were selected for extensive analysises of tensile and structual properties. The data was evaluated with multivariate data techniques using the programs Simca and Extract. The results of PCA- and PLS- analysises pointed out 3 of 52 variables as important for the variations in light scattering.
Identifiering av röjningsbestånd med hjälp av flygburen laserskanning
Bergvik Skog is one of the leading forest companies in Sweden who use airborne laser scanning for forestry information. They utilize laser data retrieved by the Swedish National Land Survey to describe the forest holdings and facilitate planning for thinning and final felling operations. However, the possibility to identify stands with clearing needs by using laser scanning data has not been tested in a large scale. The data used in the current study are field data from The Swedish National Forest Inventory in combination with laser data from the Swedish National Land Survey acquired in 2009. The collected data is used to find one or several laser variables that best describe the relationship of the field measured samples with clearing needs.
Predicting spawning bed erosion and longevity : a case study in tributaries to river Vindelälven, northern Sweden
Timber floating operations in Scandinavia during the 19th and 20th centuries has contributed to severe negative impacts on riverine ecosystems. Increase in water velocity and lack of stream bed heterogeneity as a result of stream channelization lead to increased bed load transport. Since availability and recruitment of new suitable spawning substrate in Scandinavian watercourses is sparse, spawning habitats for salmonids has become a scarce commodity. Lately, increasingly more attention has been given to the recreation and improvement of brown trout (Salmo trutta) spawning habitats in restoration projects. While much of the research on spawning habitat has been focused on evaluation of the influence that the constructed spawning grounds have on fish populations, few studies have been conducted to evaluate the persistence of these constructions over time.
I evaluate erosion of constructed spawning beds as an effect of sediment transport attributable to water discharge.
Deduplicerings påverkan på effektförbrukningen : en studie av deduplicering i ZFS
Uppsatsen beskriver arbetet och undersökning för hur deduplicering i filsystemet ZFS påverkar effektförbrukningen. En större mängd redundant data förekommer i centraliserade lagringssystem som förser virtualiserade servrar med lagringsutrymme. Deduplicering kan för den typen av lagringsmiljö eliminera redundant data och ger en stor besparing av lagringsutrymme. Frågan som undersökningen avsåg att besvara var hur ett lagringssystem påverkas av det extra arbete som det innebär att deduplicera data i realtid.Metoden för att undersöka problemet var att utföra fem experiment med olika typer av scenarion. Varje scenario innebar att filer kopierades till ett lagringssystem med eller utan deduplicering för att senare kunna analysera skillnaden.