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614 Uppsatser om Psychometric properties - Sida 21 av 41
Källor i Lagga, en uppländsk slättbygd : Geografisk och geologisk påverkan påkällvattens egenskaper
For centuries, springs have played a significant role in our society as water supplies, reasons for where to settle down, and in folklore. There are different reasons why and where a spring forms, e.g. in what kind of soil it has its outflow. Geographic and geochemical surroundings have an influence on spring-water quality.For this project some of the springs in the Lagga perish, Knivsta municipality, Sweden, were selected for a closer study. Water samples were collected from springs for analysis.
Kravspecificering av avgaspannor
This report describes the work of developing a specification of requirements for Waste Heat Recovery Units. The main part of the paper describes how the work with the specification of requirements has been performed. One specific question to be answered is:What are the customer?s demands in case of properties for the Waste Heat Recovery Units and how is that information collected as an order documentation to suit the business area Oil & Gas?The report begins with a description of the assignment and continues with the aim and background. A theoretical part describes the different areas and methods that have been important during the process.
Formulering och provning av en ny typ av sågkedjeolja
Formulation and testing of a new type of chainsaw lubricantThe company Agro Oil has come up with the idea of developing an environmentally adapted chainsaw lubricant with a new unusual base fluid. A field test with a tree-harvester shows unsatisfactory low temperature properties and high wear. In this work the viscosity, price and pour point of different combinations of the given base fluid and three other base fluids have been investigated. Desired viscosity and price are determined for different formulations. The new lubricants tested show lower pour points than almost all products on the Swedish market.A test equipment has been developed to investigate the wear.
Resurseffektivt bussprotokoll o?ver RS-485
This report describes the design and implementation of a multi-master, packet based protocol for small and tiny microcontrollers where resources are limited. The protocol was named "Tiny Controller Network" or TCN for short. The protocol is meant mainly as a control bus for automation and sensor acquisition applications but due to its flexibility can also be used for other purposes as well. It borrows some of its functionality and design ideas from the well known CAN bus and Modbus but also has a number of major differences like the use of standard hardware and time synchronisation. One of the key aspects during the design was the use of very little system resources and common on-chip hardware peripherals like a UART.
Elektronisk publicering: vetenskapliga dokument med åtkomst via webben
The aim of this master thesis is to study electronic publishing, and our main purpose is to examine different strategies of publishing such as: markup languages and page description formats. We examine in what context these strategies are used for publishing, when it comes to scholarly documents produced by Swedish universities and university colleges during the spring of 2002. We apply a sociological perspective as the theoretical framework for to identify the main purposes for scientists to publish their work. We also discuss properties belonging to the different formats: XML, HTML, PDF and PostScript. By doing a content based survey of the websites at Borås University College and at Gothenburg University, we have found that the most common form of electronic publishing, regarding scholarly documents, are lists with bibliographical information on publications and presentations of current research.
Do 25 years old skid tracks restrict growth and survival? : a study on growth conditions for the planted regeneration in a rainforest rehabilitation project
The rainforests of the world are important not only to the countries in which they grow but to the world as a whole. They influence oxygen and water circulation as well as carbon sequestration which in turn affect global radiation and global warming. The forest also have great value and in Malaysia as in many other tropical countries large volumes are harvested which leaves great areas of degraded forest with little growth and biological diversity. Due to their low financial value these forests are often transformed and used for other purposes than forestry such as oil palm plantations.
The trees are often transported out of the forest using large bulldozers. They are heavy which causes compaction of the forest floor and during transport the top soil layers are moved to improve mobility.
Möjligheter att utfodra överskottsmjölk till kalvar efter pastörisering
Good feeding practices are a basic aspect of good calf health. During the calf's first few months the calf is fed with purchased milk replacer or raw milk straight from the cow. On all farms, it will be a surplus of milk that may not be delivered to the dairy for various reasons. Milk that may not be supplied to the dairy includes colostrum and milk with unnormal properties, including milk from cows suffering from mastitis. This study investigated the possibility of improving the milk by pasteurization in order to secure its use as feed for calves and thereby obtain an improved calf health.
Spam : den nya tidens onlinegissel
This thesis takes on a broader perspective of the modern age phenomenon we call spam. One of the aims of this thesis is to present and to compare the variety of methods used in the day-to-day fight against spam, as far they have evolved today, but also to present and discuss some alternative methods for suggested future use. The properties of a common e-mail spam are analyzed to show how the components that make up the structure in an e-mail can be used to classify spam. Furthermore I explain the naïve Bayesian classification methods, the signature-based method, the commonly used rule-based method and the challenge and response method and discuss these. The widespread use of blacklists is also explained and a close new variant to blacklisting, Turntide is presented and discussed.
Framsta?llningen av barn i den nya sexualbrottslagen : en inneha?llsanalys baserad pa? fo?rarbeten
The last major change occurred in 2005 when the new sexual offenses law came into force with an increased focus on children. The purpose of this study is that through a content analysis to identify and understand the construction of children in the new legislation on sexual offenses on the basis of preliminary work. Based on the purpose we came up with two questions: How are children constructed in the preparatory works to the new sexual offenses law? Are they attributed to child characteristics and responsibilities in the new legislation on sexual offenses and if so, how? In order to achieve the purpose of the study we have chosen the preparatory works to the new legislation on sexual offenses from 2005 until today. The study's empirical work has been further narrowed to the children, which means that a distinction is made in the new legislation on sexual offenses to 6 chapter 4-6 §§.
Gentrifieringsprocessen : Omvandlingen av nedgångna till attraktiva stadsdelar
Title: The process of gentrification ?the transformation of declined neighbourhoods into attractive ones Gentrification = ?A social process of change where people with high socioeconomic status move into neighbourhoods which traditionally has been dominated by people from the lower classes or from ethnical minorities.? (Nationalencyklopedin 2010).In many cities around the world, disinvested neighbourhoods become the place to be, where everything happens. This usually occurs when different social groups, such as bohemians, homosexuals and artists, move into a declined and disinvested neighbourhood. After a while, people from the middleclass move in to the area due to its increased attractiveness, and start to renovate their properties. This usually leads to higher rents, which force some of the original inhabitants to leave the neighbourhood.
Val av värme- och ytbehandling
Atlas Copco Tools develops and manufactures handheld industrial tools. Heat and surface treatments are used to provide the tools with certain properties. There are no routines for the choice of treatment or for how to specify treatment on drawings. Production documents that are sent for production abroad may not be clear enough. Some treatments are known as trademarks and there are no instructions for how to specify these on drawings and in CAD-models.The purpose of this master thesis work is to create recommendations for the procedure of choosing heat and surface treatment.
Fijian chocolate ?what would it look like?A study of the Fijian food culture, to find the specific attributes that might form the future Fijian chocolate culture
The cocoa produced in Fiji is exported to industrialized countries for processing of the raw material. The Swedish organization Cocoa Bello is involved in a project to provide the Fijian cocoa farmers with knowledge as well as resources to enable local processing and to attain added value of the cocoa crop. The purpose of this study is to discover a field of application for the Fijian cocoa among the rural population, using an ethnographic design. We spent one week in Namau Settlement, Fiji, where we applied in-depth interviews and participant obser-vations in six families. We found a number of aspects affecting food choices, such as social, economical and cultural beliefs.
When does the protein profile in milk normalize after antibiotic treatment against clinical mastitis?
Concentration of protein in bovine milk is one of the most significant milk quality parameters, to a large extent determining the price for milk to the producer. Mastitis is a common disease among dairy cows, negatively affecting not only milk yield but also milk protein composition. Milk from mastitic cows tends to have lower cheese yield, negatively affected processability properties and sensory quality, due to changed protein quality and composition. Poorer milk protein quality would have an economically negative impact on dairy industry. Only few studies have investigated the short term effects of mastitis on milk protein composition.
Skötselns och ståndortens betydelse för kärnvedsbildningen i tall
Heartwood has always been a desirable part of the tree, due to it?s superior decay qualities com-pared to the sapwood. How the formation of heartwood works has been known for a long time, but which factors that initiates and stimulates the production are poorly understood. This case study presents the results of a study in which silvicultural treatments and site properties had a key position as factors to the formation of heartwood. According to the hypothesis the amount of sapwood is directly controlled by the size of the crown.
Vad är det som gör att killar väljer teknik och tjejer frisör
The properties of this material has been studied and it was found that there is very little difference in what affect students in there choice of school, studies and career. Boys who choose hairdressing and styling differ more than girls who choose a career in technics. This is a surprising result which we didn´t expect. In researching background material we learned that it should differ more in perspective of gender. We have compiled the material around young people's choices to high school.