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777 Uppsatser om Intermediate frequency - Sida 51 av 52

Införande av spårvägar i Örebro - Förslag till spårvägssträckning

In Örebro, the car traffic share does not tend to decrease. The crowdedness on some of the bus routes is high at times. Investigations show that the residents of Örebro want a city centre whose street environment is more restrictive of car traffic and better for pedestrians, cyclists and public transport. To decrease the car traffic share a rapid, convenient, clear, effective and environmental friendly public transport with high frequency and strong capacity in a short, direct and logical network is needed. A modern tramway fulfils these criteria.At first, this report describes factors that are important to take into consideration when planning a tramway.

Samband mellan mammans BMI relaterat till amningsduration och mammans skattning av barnets hälsa : En enkätstudie

I ett internationellt perspektiv har Sverige hög amningsfrekvens, men under 2000-talet har amningsfrekvensen sjunkit och stora regionala skillnader ses. Kvinnorna rekommenderas att helamma sex månader. Mödravårdcentralen (MVC) informerar om bröstmjölkens hälsoeffekter som till exempel att bröstmjölken skyddar barn mot allergier. Forskning visar att överviktiga och feta kvinnor har kortare amningsduration, men få studier behandlar svenska förhållanden. Syfte: Syfte med fördjupningsarbetet är att studera samband mellan mammans BMI relaterat till amningsduration och mammans skattning av barnets hälsa de tre första levnadsåren.

Röjningsbenägenheten bland privata skogsägare : en enkätundersökning bland medlemmar i SÖDRA

The intensity of cleaning declined dramatically in the early 1990?s in the Swedish forests. Recession, an economic depressed forestry and the new law of silviculture from 1993, where the duty of cleaning was removed have been considered as sources to the decline. This has led to a situation where huge areas of forests are untouched, which can lead to negative effects for those stands in the future. The purpose of this thesis was to find out how the individual landowner acts and feel when it concerns cleaning activities. Has the landowner noticed Södra?s campaigns about cleaning and what sort of measure should Södra implement to increase the members? cleaning activity? The thesis is based on a opinion poll made through a random draw among all Södra?s members.

Optimalt mottagningsstall för kalvar : en fältstudie

A cattle producer that buys calves that are younger than six months to the herd should have a starter stable to prevent infection spreading in the herd. According to the Swedish animal welfare regulation there has to be a starter stable if more than 50 calves that are younger than four months are bought in yearly to the herd. The aim of the study was to improve the knowledge about bovine buildings and management of starter stables to obtain optimal weight gain and health of the calves. The hypothesis 1) The younger the calves are when purchased, the higher the calf mortality and 2) Purchasing calves from a high number of herds involves a higher risk of calf health problems and calf mortality were tested in the study. The objective of the study was to give advices by way of presenting ideal solutions of how a starter stable should be constructed and managed. A field study was done during June to September 2008 to collect knowledge and experience from existing starter stables.

Hälsa och hälsorelaterat beteende : En undersökning av beteendets betydelse för den självskattade allmänna hälsan

An increasing number of health problems in the population and an uneven distribution of health between different groups in the society, have been identified as a problems and has therefore been put on the political agenda in Sweden. Thus, the purpose of this thesis is to estimate and discuss the significance an individual?s behaviour, in a number of areas, has on his/her level of health.The empirical material for this thesis is taken from a nationwide inquiry conducted in 2004,which was called ?Hälsa på lika villkor?? (Health on equal terms?) The material used consists of the answers and records from individuals living in the administrative district of Kronoberg. 9972 individuals were included in the sample and the answering frequency was 63,2%. To map and analyse the material, which was done mainly through crosstabs, chi-square tests and logistic regressions, the statistics software SPSS 11.5 was used.The parameter used to measure the health level is the individual?s own perception of his or her general health.

LEAN LOGISTIK Styrning och hantering av produktions-, material- och informationsflöden: En fallstudie vid Wibax AB

Under senare årtionden har Lean Production blivit ett allt mer etablerat begrepp inom den moderna industrin när det gäller effektivisering av verksamheter. Målet med Lean Production är att kunna erbjuda kunden högsta kvalitet till lägsta pris, på kortast möjliga tid, genom att ständigt arbeta med att eliminera slöseri. Genom att minimera eller eliminera aktiviteter som inte skapar något värde för kunden kan flöden bli mer effektiva och kräva mindre resurser.Ett företag som arbetar med att sammankoppla Lean-principer med sin logistiska verksamhet är Wibax AB; ett företag inom kemikalieindustrin. Företaget har under de senaste åren befunnit sig i en expansionsfas och ett problem är att verksamhetens processer inte har utvecklats i tillräckligt hög takt för att på lång sikt kunna möta den ökade efterfrågan.Syftet med denna studie var att undersöka hur Lean-principer kan tillämpas för att förbättra fallföretagets arbetsprocesser inom lagerstyrning och materialhantering. Då likheter mellan områdena Lean Production och logistik kunde ses i början av studie var syftet även att undersöka vilka teoretiska kopplingar som kunde hittas mellan områdena.För ett antal av företagets produkter uppfattas arbetsflödet som ineffektivt och kartläggningen av nuvarande arbetsflöde visade att de största problemen är att informationsöverföring sker manuellt mellan ett flertal parallella system, att miniminivåer i lager inte är baserade på statistiska underlag samt att det råder oreda både vad gäller material- och informationshantering.Resultatet av studien visade att många problem var sammanlänkade och att flödet skulle effektiviseras av relativt få åtgärder.

FE-modellering av håldäcksbjälklag för dynamisk analys : Jämförelse med fältmätningar

Det byggs mer och mer med prefabricerade håldäcksbjälklag vilka har stora dimensionerings och produktionsfördelar. Långa spännvidder och lätta bjälklag gör denna typ av konstruktion känslig för vibrationer och därför ställs konstruktörer idag inför en problematik som inte tidigare vanligtvis varit en dimensionerande faktor. Som en naturlig följd av detta är kunskapen inom området begränsad och förståelsen för denna typ av konstruktion vid dynamiska problem eftersatt. Hur håldäcksbjälklag beter sig vid små dynamiska laster, från mänsklig aktivitet på bjälklaget, och hur denna typ av problematik ska hanteras beräkningsmässigt behöver studeras. Vid statiska beräkningar antas bjälklaget vara enkelspänt men vid dynamiska beräkningar kan bland annat inte detta antagande göras då effekten från elementens sammankopplingar och eventuella pågjutningar påverkar bjälklagets styvheter och därmed dess dynamiska beteende.

Stärkelsenedbrytningens betydelse för mjölkkors konsumtionsmönster och mjölkproduktion :

Feed intake in dairy cows is regulated by a variety of factors influencing hunger and satiety. One of the regulation systems includes the short chain fatty acids produced during feed degradation in the rumen. Starch can be digested either in the rumen where short chain fatty acids are produced or in the small intestine where glucose is the end product. Since glucose does not have the same effect on satiety that short chain fatty acids have, the site of starch digestion might be an important factor that affects feed intake and milk production. The aim of this study was to investigate the effects of site of starch digestion on feeding behaviour (feed intake, consumption time, and eating frequency) and milk production. Because feeding behaviour is closely connected to the cows? environment, the study also included observations of behaviour. Three different feed rations were compared.

Ligghallsareans inverkan på beteenden hos högdräktiga ston i lösdrift :

SUMMARY This pilot study tried to answer the question however the present animal welfare regulations for horses regarding lying hall area requirements are adequate for horses older than 24 months. The study was carried out at one of the largest stud farms for standard bred horses in Sweden. Mares in late pregnancy with an initial mean age of 10 years was used in a behaviour study. The influence of varying space per animal in a loose-housing system on behaviours like the horses' lying hall use, standing, resting, moving behaviour and threats was studied. The behaviour at three different horse densities ? 18 mares, 13 mares and 8 mares (7.4 m2, 10.3 m2 and 16.7 m2 per mare, respectively) ? was recorded by use of video.

Överavkastande Aktierekommendationer : En utopi eller en hållbar investeringsstrategi?

Background: The value of stock recommendations have been debated for a century andthe debate has escalated since Alfred Cowles (1933) published his research in ?Can StockMarket Forecasters Forecast?? As of late, savings in stocks has increased and the householdsare managing their savings more actively. The consequence of the increased interestin stocks has resulted in a growing market for stock recommendations. Not just financialmedia but daily newspapers have embraced this new found interest, hence stock recom-mendations can be found in almost all large newspapers in Sweden. Furthermore, this phe-nomenon has also lead to intensified research within stock recommendations.

Att spara eller inte spara? : En kvantitativ enkätstudie av informationslagringssystem för vetenskapliga artiklar

Abstract PurposeThis thesis aims to focus on how master students administer scholarly articles after they have found them. The purpose of the study is to detect how and to what extent people administer their articles from a personal information management-perspective (PIM).MethodTo answer the research questions, a web-based questionnaire survey was distributed which was announced to around 2,000 master students from different universities in Sweden. Most of the items in the survey focused on individual storage methods. The respondents were asked to rate the frequency of their different information administration behaviors on a seven level Likert-type-scale. Subsequently, items concerning specific information administration behaviors were posed, followed by questions on the respondent's sociodemographic status.

Den relativa viktens (kalv/ko) inflytande på kalvningsegenskaperna hos SRB och SLB :

Difficult calvings and stillbirths are problems in Swedish dairy production that result in large expenses for the farmers and welfare issues concerning the animals. A common opinion is that the live weight of SRB and SLB is increasing, and whether increased weights have caused the increase in calving problems has been discussed. The aim of this study was to investigate the relationship between the relative birth weight (calf/cow) and calving difficulty and stillbirth, respectively. The importance of breed and parity for the relative weight has been investigated, and comparisons with previous studies have been made to evaluate whether the relative weight has changed over the last decades or not. The study was based on 807 calvings, registered during the period 1993-2003 in the experimental dairy herd of the Swedish University of Agricultural Sciences (Jälla).

Renal dysplasi hos hund :

Renal dysplasia is a developmental anomaly of the kidneys which is considered to be the primary lesion in juvenile progressive nephropathy, a condition leading to chronic renal failure in young dogs. It is defined as disorganised development of the renal parenchyma due to abnormal differentiation, and pathological lesions include persistent foetal structures, dysplastic tubules and cartilaginous and osseus metaplasia. The aetiology of renal dysplasia in dogs is still unknown, but possible causes are infection with canine herpesvirus, teratogenic substances or intrauterine ureteral obstruction. In some breeds renal dysplasia is a familial or inherited disease. Clinical signs of chronic renal failure, such as polyuria, polydipsia, vomiting, weight loss, anorexia, lethargy and anemia, usually appear before the age of 2 years.

Ljudkudde med stereoåtergivning

Detta examensarbete är genomfört i samarbete med Thorbjörn Birging. Birging arbetar med RFID[1] och är även VD för CombiQ på Science Park i Jönköping. Under lång tid har han velat skapa en produkt som hjälper människor med sömnproblem, depression, ångest och stress. Författarens roll som ingenjörsstudent blev att utveckla hans ide till en färdig produkt. Birging upptäckte efter att ha läst en artikel om sömnproblem att det finns studier som visar att det är enklare att somna med ett svagt ljud i rummet för att andra personer i rummet inte skall störas.

Behandlingsresultat av kliniska mastiter : en studie av mastitbehandlingar utförda i mjölkkobesättningen på Jälla naturbruksgymnasium 1997-2008

Mastitis is an important disease in dairy cattle. It is very costly for the farmers and affects a large number of animals. Few studies have been made investigating the outcome of treatment for acute clinical mastitis under Swedish conditions, and it can be problematic to use the results in foreign studies since both the microbial flora as well as treatments may be different from the situation in Sweden. In this project we have investigated data on clinical mastitis and antibiotic treatment in the dairy herd at Jällaskolan, Uppsala based on recordings during the last ten years. The material includes both Swedish Red (SRB) and Swedish Holstein (SLB) breeds, which have been kept at the farm under similar conditions.

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