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1022 Uppsatser om Distribution - Sida 12 av 69

Magnetfält alstrade kring nätstationer i samband med lokaldistribution av elkraft : Magnetic fields generated by electrical substations during distribution of electric power

Abstract: This report covers primarily the work of documenting electromagnetic fields generated by one of the later parts in the electrical power Distribution chain: The electrical substation, wherein 10 kV is transformed to 400 V for use by private consumers. Thus it is one of the most widespread and frequently occurring parts in the Swedish power grid and of particular interest, as electrical substations are found everywhere in populated areas, often in close vicinity to people and animals.The report deals with a number of formulated questions and/or hypothesis? stated at the onset of the work undertaken, theory that is relevant for the topics the report covers, the details of the field work undertaken and the following analysis of the readings, which in term provide answers for the questions stated in the beginning. It also covers what is the currently known short term and long term risks associated with electromagnetic fields in the power frequent spectrum and of varying intensity in the vicinity of humans.The analysis also provides recommendations and identifies several points to carefully consider when planning for new installations or replacements of some parts of existing installations.For enhanced reading comprehension there is, aside from sections with pictures and attached explanatory texts and templates, several graphs, one-line diagram and maps of the power grid among the appendixes to the rapport..

Utvärdering av en Magnetic Harmonic Traction Drive

In this report a new gear concept is evaluated using the magnetic finite element method (FEM)software MagNet and Ansys as well as the mechanical FEM software Abaqus. The gear conceptis evaluated in terms of maximum torque capability, torsional stiffness, gear ratio and efficiency.ABB Corporate Research has proposed a new gear concept which should be less expensive thangearboxes used today. The new concept is called aMagnetic Harmonic Traction Drive and usesthe principles of a harmonic drive gear to achieve a high reduction ratio. The gear conceptreplaces the wave generator used in traditional harmonic drives with magnets and uses tractioninstead of gear teeth to transfer the torque. The main components in the gearbox are the magnets,the flexspline, the magnetic portion and the circular spline.

Vem har bäst betyg? : en kvantitativ studie om betygsfördelning

Aim: The study aims to investigate the Distribution of grades between students in a practical subject and in a theoretical subject.The problem:What is the grade Distribution in physical education and mathematics, with respect to gender, socioeconomic background, parental education, ethnicity, and physical activity?Method:To answer the aim of the study a quantitative method was chosen. As the collection method used was questionnaires to 620 students in the 9th grade in Stockholm. Of the 620 questionnaires, 597 questionnaires were used for the static analysis. The method of analysis used cross tables and logistic regression analysis.

Skaftslamkrypa (Elatine hexandra) i Bolmen, utbredning, tillväxt, reproduktion och styrande faktorer

The plants in the genus Elatine are characteristic for oligo and mesotrophic lakes. This study focuses on Elatine hexandra one of the four species in Sweden. It is stated as vulnerable by the National Environment Agency and a conservation plan with guidelines to preserve the plant in Sweden is under preparation. There have been a few previous studies investigating this plant in other countries but this is the first one for Sweden. The aim of this study was to investigate the Distribution, growth and reproduction of E.

Beteende på offentliga platser

Several theoretic and environmental psychological models establish a connection between the environment and the reactions of humans and the research support that there is a mutual influence between individual, environmental and behavioral factors. You often assume that a person both can influence and be influenced by the surrounding environment. This is evident, but it is less obvious how a given physical design influence people?s immediate behavior in the city. The aim of this study was to investigate if the physical design of a place influences people in an urban environment and to investigate how the behavior is influenced.

Flygburen laserskanning kopplat till skördarmätning för datainsamling till operativ planering :

The requirements for operative planning activities are increasing. The forest industry wants to gain better control over wood flow. A felling that is more market adjusted is desirable. However, this causes problems in the operative planning process because of the data collection methods used today. Data about timber assortments and data about the Distribution of the tree diameter, etc., are often lacking. Airborne laser scanning is used to a greater extent than before for estimation of forest variables and should perhaps be used to the same extent in operative planning activities as well.

Optimering av distributionsflöden. : En fallstudie av ett handelsföretag

Syftet med uppsatsen är att utifrån ett chefperspektiv beskriva ochförklara hur företag inom detaljhandeln på taktisk nivå kan arbetaför att mäta och följa upp resultaten av sin interna marknadsföringmot personal med kundkontakt. Studien har en kvalitativ ansats där vi har genomfört sexsemistrukturerande intervjuer med chefer på taktisk nivå hosStadium, Bilia Väst, Affärsverken Karlskrona AB samt enkompletterande intervju med Scandinfo..

Genetisk studie av inavel och fertilitet hos hund :

Inbreeding, the mating of related individuals, has been the one dominating breeding strategy for dog breeders during the last 200 years. However, its negative effects on fer-tility and other fitness traits, a phenomenon called inbreeding depression, have been ignored in the quest of perfect unity in conformation or performance. The purpose of this study was to test the hypotheses that litter size is reduced as a consequence of in-breeding, affected by both the inbreeding coefficient of the dam and the litter and that a rapid increase in the inbreeding coefficient affects litter size more than a slower rate. Data were collected from the Swedish Kennel Club registry of origin. Breeds included in the study were the Bernese Mountain Dog, the Cocker Spaniel, the Golden Retriever, the Rottweiler and the West Highland White Terrier.

The distribution of Moose (Alces alces) during winter in southern Sweden : a response to food sources?

The traditional Swedish way of dealing with browsing damages made by moose, is to reduce the moose population. However, a growing way of dealing with damages made by several ungulate species, including wild boars in particular is to redistribute them with supplementary food sources. Attracting them to settle in habitats less vulnerable to damages made during foraging. This study we tracked collared moose in southern Sweden from January throughout April in the year of 2009. From the tracking data their ?favourite? positions was selected and visited in order to study the features that attracts moose during winter.

Mikroplasters spridning längs den svenska västkusten - En studie om koncentration och distribution av mikroplaster i marina sediment

På senare år har ett nytt forskningsområde kring mikroskopiska plastfragment i marin miljö, kallat mikroplaster, vuxit fram. Mikroplaster härstammar från antropogena källor som avloppsreningsverk och vid fragmentering av makroplast. Det finns ett begränsat antal studier inom området, särskilt vad gäller svenska vatten, vilket innebär att det finns utrymme för mer forskning. För att bidra till forskningen har föreliggande studie undersökt sedimentprover från litoralen vid sju olika platser längs svenska västkusten samt ett sedimentprov från djupt vatten vid en av platserna. För att undersöka koncentration och Distribution av mikroplaster utfördes korrelationsanalys längs den svenska västkusten mellan mikroplaster och två variabler; kornstorlek och salinitet.

Mätningar av distributionsverksamhet: mätetal och påverkande
faktorer

Dagens dynamiska affärsmiljö kräver ständig effektivisering för fortsatt lönsamhet på marknaden. Logistik och Distribution är områden som av denna anledning hamnat i fokus för förändring eftersom de kan skapa konkurrenskraft. Genom effektiva mätsystem i Distributionsverksamheten kan företag styra och utveckla sina Distributionssystem efter de krav som ställs och därmed öka sin konkurrenskraft. Mätningar är verktyg för att skapa kunskap och kunskap är en förutsättning för förbättring. Det är mot ovanstående bakgrund som syftet med detta arbete tagit form.

Sidofördelning av främre korsbandsskador i olika idrotter : en registerstudie baserad på data från svenska korsbandsregistret 2005-2014

AimThe aim of the present investigation was to study the side Distribution (right, left) and possible gender differences in terms of anterior cruciate ligament (ACL) injuries in different sports.MethodThis Register study comprises a total of 27856 subjects from the Swedish National Anterior Cruciate Ligament Register. Side- Distribution and possible gender differences were analyzed. The different sports consisted of aerobics, alpine skiing, basket, cross-country skiing, dancing, enduro, floorball, gymnastics, handball, ice hockey/bandy, martial arts, outdoor activities, racket sports, snowboard, soccer, and volleyball. Due to injuries that had occurred in the traffic and at work 5076 subjects were excluded. Statistical data have been analyzed with one way ANOVA and x2 test and the Tukey post hoc test has also been used.

Utvärdering av viktmåttbaserad reglering av lokal- och regionnätens resursbehov

The Energy Market Inspectorate is implementing a new tariff regulation in Sweden. A small part of the new regulation concerns effectible operation costs and originally they where intended to be calculated using a modification of equivalent comparison standards, in Swedish Ekm. This thesis is intended to analyze if Fortums grid in Stockholm could be described correctly, using equivalent comparison standards. In Ekm every part of the Distribution grid is designated a weighting in relation to 1 km 0.4kV over head line. These Ekm-measurements are intended to simplify comparison between different grid areas with different structure and geographical conditions.

Förändringar i Milkos externa logistik vid en
produktionsflytt från Östersund till Sundsvall

Detta examensarbete syftade till att undersöka och beräkna kostnads-, resurs- och tidsförändringar på inleverans, mellantransport och Distribution för Milkos egendistribuerade produkter vid en produktionsflytt från Östersund till Sundsvall. Projektarbetet syftade även till att undersöka hur en flytt skulle påverka möjligheten att transportera externa varuägares produkter. Arbetet mynnade ut i ett förslag som beskriver hur de externa transporterna kan lösas vid en eventuell produktionsflytt. För intransporterna av råmjölk presenterades ett förslag där 360 000 liter i veckan ska styras om från Östersund till Sundsvall med påföljden att årskostnaden ökar med knappt 1,5 miljoner kronor. I Distributionsupplägget ingick ett uppförande av en omlastningscentral i Ånge och ökat utnyttjande av den befintliga centralen i Sollefteå.

Arbetsmiljöansvar vid uthyrning av personal

As the staffing agency business is rapidly growing and suffering from accidents resulting in higher sick leave than in other businesses, it is of great interest to analyze which responsibilities prevail between the customer companies and the staffing agencies, when it comes to working environment for hired staff.The purpose of this essay is to clarify the Distribution of responsibilities between customer companies and staffing agencies, regarding working environment. I would also like to analyze which consequences this Distribution of responsibilities may lead to.To be able to answer these questions, I have chosen to use the legal dogmatic method together with the sociology of law method. I have studied legal sources, literature and also interviewed three persons who are active within the staffing agency business; one person from the Swedish Work Environment Authority, one person from the employers? side and one person from the employees? side.The conclusion of my survey is that the SAM-responsibility is divided equally between staffing agencies and customer companies, since the customer company who hires staff is equated with an employer. The employer must also ensure that there is an organized work adaptation and rehabilitation function within the company.

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