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1001 Uppsatser om Genomic selection - Sida 10 av 67
Orsaker till kalvningssvårigheter och dödfödslar hos SLB och SRB
Difficult calvings and stillborn calves are costly for the producer and lowering these frequencies can decrease the costs for the dairy operation. Each calving in the herd is registered by the farmer and stored in a central database. The information is used to monitor the level of calving-difficulties and stillborn calves in the herd and nationally. Monitoring of these registrations is important to detect possible changes. Breeding-value prediction for calving traits is based on the calving information in the database.
Förändrad urvalsprocess : En uppsats om varför urvalsprocessen för stridspiloter ser ut som den gör
I denna uppsats tas frågan upp om vilka drivkrafter som låg bakom förändringen i urvalsprocessen för stridspiloter under 70-talet. 1970 skedde en reform av urvalssystemet där det gick från ett karakterologiskt urval till ett stegvist urval. Det karakterologiska urvalet baserades till större del på psykologiska intervjuer medan det stegvisa urvalet var en rad olika tester som riktade sig mot vissa specifika områden inom flygandet. Även i det stegvisa urvalet använder man sig utav psykologintervjuer men det är inte längre den övervägande största delen av informationskälla för UTK. Arbetet är upplagt som en hypotesprövning där forskaren ställt upp fyra olika hypoteser för vad som var drivkraften bakom förändringen i urvalsprocessen.
En publik i förändring : En kvalitativ studie om det individualiserade tittandet i relation till användandet av VoD-tjänster
Purpose: The purpose of the study is to gain a deeper understanding of influencing behaviours concerning individualized viewing in relation to VoD-services (Video on Demand), and how this reflects the perceived viewing behaviour in terms of habits, content and social actions.Theory: The theory that primarily underpins this study is Jacob Bjur?s thesis Transforming Audiences. Bjur?s thesis provides an analytical model of individualized viewing behaviour that has been used in this study case. The model is founded on three central tenet areas of individualization, Habitualness that ensures habits, Socialness that refers to the social space and Referential space that ensures content/selection and viewership as a referential act.Method/Material: The study is based on a qualitative research method underpinned by focus groups interviews.Results: The research demonstrates strong tendencies towards an individualised viewing behaviour in the use of VoD-services.
Vilka faktorer inverkar vid valet av transportföretag? : En fallstudie om företagskunders resonemang och prioriteringar vid köp av transporttjänster och val av transportföretag.
During the last couple of years the focus for many businesses have moved from just being price oriented to include such factors as quality, flexibility, service, delivery precision and environmentally friendliness. The shift in viewpoint arises from the increasingly competition on the market and the hard economic atmosphere. It has become more important to differentiate the company and its products to be able to increase market share. The purpose with this master?s thesis was to get a better understanding on how companies (customer to DHL) are reasoning and prioritizing when choosing Swedish carriers.
Utvärdering av en ny selektionsmetod för hingstsperma : med avseende på membranintegriteten och membranstabiliteten
Today, equine breeding is based on performance and conformation, resulting in a vast variation in fertility among different horses, with noticeable economic losses as a consequence. The horse breeding industry is therefore in need of methods that diagnose the spermatozoa concerning their quality and provide the best sperm for AI. The commonly used selection methods for sperm today are: centrifugation, where extender is added, the sample is centrifuged and then resuspended; swim-up self-migration; adherence separation; and density gradient centrifugation. However, none of these methods are in used routinely in practice before inseminating mares with fresh or cooled semen.
The aim of this study was to evaluate a new selection method, Single Layer Centrifugation (SLC), and its effect on sperm viability. The viability was analyzed with regard to membrane integrity and membrane stability of ejaculated spermatozoa.
Extra! Extra! En studie i urval och nyhetsvärdering av push-notiser
This case study aims to find out whether the promotion of Swedish news through push technology, and the selection process behind it, obeys the traditional criteria of news values.A months-worth of push notifications, sent out by the mobile phone applications of newspapers Dagens Nyheter and Expressen, were analysed through the application of a number of taxonomies meant to determine their newsworthiness.These taxonomies were, however, based on 20th century media, and do not necessarily adapt well to analysis of digital news publication forms. The purpose of this study is therefore to find out which criteria are still relevant to the news selection behind a digitalformat such as push notifications; and which have become obsolete.The basis of this study is the criteria of news values originally designed by Galtung and Ruge in 1965 and revised by Harcup and O?Neill in 2001; as well as the model of assessing front page news proposed by Hvitfelt. The content analysis was conducted in a manner as similar to that of Harcup and O?Neill?s own study as possible, so as to constitute a re-revisal ?revamped for the digital age.Our results show that the criterion of ?frequency? ? that is the conformance between the time-span of an event and the publication frequency of a medium ? has acquired an ambiguous importance.
Queer manga och manhwa på folkbibliotek
We believed that knowledge organisation of manga and manhwa with homosexual (including lesbian) themes might be a challenge for Swedish public libraries. One of the reasons for this is that these themes in manga and manhwa usually occur in genres not directed towards an LGBTQ (lesbian, gay, bisexual, transgender, queer) audience. To see how Swedish public libraries treat such titles and why they treat them as they do, we examined a selection of public libraries, their collections, acquisitions, cataloguing and shelving of relevant titles. The theory used is mainly Grant Campbell?s binarisms, subject access to LGBTQ literature and critical analysis of knowledge organisation.
Studier av koppar i mjölk : en prooxidant med negativa effekter på mjölkkvaliteten
The taste of the dairy product is probably the main factor determining consumer?s dairy products choice. Consequently it is of great importance that the product tastes good and as expected every time. Off-flavors in milk can be caused by for example oxidation of the milk fat. Since copper is a prooxidant, a high copper content in the milk can cause oxidation.
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).
Effekter av spädningsvätska på motilitet och fertilitet hos hingstsperma : en jämförelse av subjektiv motilitetsbedömning och QualispermTM
At SLU, Divison of Reproduction, Dept of Clinical Science, there is an ongoing project on the development and evaluation of new methods for the assessment of stallion semen quality. This EEF-study, which is a part of that larger project, has focused on the effects on motility and fertility of stallion semen of two different extenders and selection. Both an objective method and a subjective method for analysis have been used and compared in the study.
The increase in the use of artificial insemination with cooled semen in Swedish horse breeding over the last decade is thought to play a part in declining foaling rates (Kareskoski et al, 2006, Kuisma et al, 2006). This calls for better evaluation methods of semen quality since cooling and transportation put higher demands on semen quality in order to maintain fertility (Aurich, 2005).
Tyr : En vetenskapshistorisk och komparativ studie av föreställningar och gestaltningar kopplade till den fornnordiske guden Tyr
Tyr ? A historical and comparative study of configurations and formations connected to the Old Norse god Tyr. Klas af Edholm This thesis has two aims. One is a discussion of the history of the study of Old Norse religion and related aspects, centered on how general tendencies within the area of research have affected the interpretations of the god *T?waz/Tyr.
Samband mellan överlevnad, tillväxt och pälskvalitet hos lammen och fruktsamhet och modersegenskaper hos tackan
There are several factors influencing the profitability of production with sheep. Two of the most important factors are ewe fertility and lamb survival. Also growth capacity of the lambs is important. This paper aims to review correlations between the ewe?s fertility and maternal behavior and lamb survival.
En komparativ studie av fem rankningsalgoritmer för query expansion
The purpose of this thesis is to compare five different ranking algorithms for query expansion. The algorithms compared are f4, f4mod, porter, wpq, and emim. This is done using a TREC collection, a selection of topics, and relevance judgements. Relative recall is measured before and after the expansion of the query. The study shows that all of the algorithms manage to increase the relative recall, f4 being the one most successful..
Utveckling och design av spegelskåp för badrum
This report is a documentation of a Master?s thesis of 20 credits performed at the educational program of Technical Product- and Production Development with Design at Halmstad University. The project is carried out in cooperation with Hafa AB in Halmstad.The purpose of this project was to bring forth a concept of a bathroom cabinet for Hafa?s new selection Young through creative design methods. The selection is supposed to attract the younger purchaser but also a target group that dare to experiment with home furnishing and appreciates new design.
Extrem hundavel : ett välfärdsproblem för dagens rashundar
For centuries inbreeding has been used to refine traits in dogs, making desired traits more hereditary and thereby, different breeds have been invented. Breed standards have been written for each of these breeds, describing in detail the different characteristics of each breed. When humans start to choose which animal to breed from, so called artificial selection, taste is put before function and the laws of nature, the natural selection, cease to apply. During this development, pedigree dogs have gone towards more and more extreme exterior characteristics and the dogs may have inherited various, more or less, severe problems for example compromised vision, impaired ability to move and difficulties to breathe. However they can still survive and reproduce because humans provide them with the conditions to do so.