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891 Uppsatser om Random-walk- hypotesen - Sida 19 av 60
Analysis of Raspberry ringspot virus in raspberry by amplification of RNA-2
So far, only limited research has been carried out on viruses infecting raspberry, even though the diseases that these viruses cause result in economical losses for raspberry growers. Raspberry ringspot virus (RpRSV) belongs to the family Comoviridae and the genus Nepovirus. Nepoviruses are characterized by their icosahedral virus particles and bipartite genome of single-stranded (+) RNA (RNA-1 and RNA-2). These viruses are transmitted mainly by nematodes of the genus Longidorus, which feed on the roots of plants. RpRSV causes disease in raspberry, grapevine, strawberry and many other plants.
Detektering av krypterade filer
In contemporary encryption the vast amount of text subject to cracking has brought about the demand for methods distinguish files more likely to be encrypted. The encryption software Truecrypt can encrypt files that are not possible to identify with a file signature. To solve the detection problem, an algorithm sensitive to the absence of structure in the very code of files was developed. The program was written in the programming language EnScript which is built into the forensic software suite EnCase. The essential part of the algorithm therefore deployes the statistic of a chi-square test for deviance from a uniform distribution to distinguish files with contents that appear to be random.
Statusuppdateringar på Facebook : Förhållningssätt och vanor hos användare
A common form of communication within Facebook is the communication between users via status updates. If you write a status update all your friends have the opportunity to read and to respond to the update. The overall issue of this survey is: how are Facebook users to commu- nicate with status updates? The survey aims to gain insight and greater understanding of communication patterns and user awareness of social contexts when they write status updates. The study will act as an attempt to understand a small part of a complex interaction taking place in a social situation.
Kejsarens nya kläder : En fallstudie på H&M:s Lagerfeldkollektion
As companies exert themselves to find new ways of achieving market dominance and stronger brands, the phenomenon co-branding has become increasingly popular. By cooperation between two different firms the combined effects can result in synergies not only on the balance sheet, but even through softer values such as Brand recognition, equity and larger market share. Recently the fashion company H&M launched a collection together with the esteemed fashion designer Karl Lagerfeld. The objective of this paper is to examine the effects the collaboration had on consumer?s attitudes towards the two brands.
Fysisk förbättring utan svettning
The last decades the increased computerisation at the places of work has led to new physical loads in the working life and new demands on the working environment. The widespread usage of computers in the working life has led to more sedentary work and less daily movement.The purpose of the thesis is to develop a new product to a concept that in a low intensive and healthy promotional way will activate the body. The product will make a combination of healthy promotion activity and work during office hours possible and primary aims to those with a sedentary office work, which leads to that the body don´t get to be activated in the extent needed.Information has been gathered from studies already made in this area, interviews plus a study and an experiment. From the gathered information concepts and functional solutions has been generated and evaluated to result in a product concept.The thesis has resulted in a concept that consists of a work place unit where the user walks on a treadmill and works at the same time.A general conclusion which can be drawn is that the majority of persons that tested to walk and simultaneously work with a computor on the treadmill found this way of working attractive. Many were positively surprised and said that they would use such an physically activating work place implement if it was available at their place of work..
Hörselnedsättning bland diabetiker med typ 1-diabetes respektive typ 2-diabetes ? en jämförande metaanalys
Background: Diabetes mellitus is one of today's major public health problems, affecting up to 347 million people worldwide. Several studies have shown a correlation between hearing loss and diabetes mellitus. However, it is still unclear whether this correlation differs between type 1-diabetes and type 2-diabetes.Purpose: The purpose of this study is to investigate whether there is any difference in prevalence of hearing loss in type 1-diabetics versus type 2-diabetics.Method: A meta-analysis was performed based on ten studies that were identified through the database PubMed and through manual searching of references. Odds ratios for the risk of developing hearing loss were calculated in each study. Pooled odds ratios were calculated using a random effects model.Results: Pooled odds ratios indicates that both type 1-diabetics and type 2-diabetics are more likely to develope hearing loss compared to non-diabetic controls.
Hur inverkar olika andel vallfoder i utfodringen på produktion, hälsa och beteende hos mjölkkor? :
Cows are ruminants and they need fibers in their feed and sufficient eating time to function psychologically and physiologically. Many of our cows don?t get enough forage and too much concentrates, which given in the wrong way may cause health and behavior problems. Too much concentrates at once makes the pH in the rumen sink and this may cause decreased fiber utilization since the microbes in the rumen are negatively affected by this. The cow may also get serious problems such as laminitis and abomasal dislocation.
Kris i "kyrkans hörna": en jämförelse mellan öst och väst
Sekularisering fortsätter att drabba kyrkan i både öst och väst. Uppsatsen behandlar sekulariseringsteorier utifrån ett bibliskt perspektiv. Hypotesen är att Jesus Kristus är kyrkan som kropp. Detta kyrkobegrepp har förändrats. Även budskapet och pedagogiken har påverkats.Fältarbete har genomförts i både Egypten och i Sverige.
Utländskt ägande och utdelningsnivåer i svenska börsföretag
Den svenska ägarmodellen, som karaktäriseras av ett väldigt koncentrerat ägande, är på tillbakagång på grund av ett alltmer globaliserat ägande. Det ökade utländska ägandet i Sverige skulle kunna påverka det enskilda företaget på många olika sätt. Denna studie fokuserar på hur den stigande graden av utländska ägande påverkar svenska börsföretags utdelningsnivåer. Enligt irrelevansteoremet av Modilgiani & Miller (1961) borde investerare vara likgiltiga inför beslutet om ett företag skall ha utdelningar eller inte. Varför utdelningspolicy ändå spelar roll för aktieägare har i teorin förklarats utifrån ett flertal olika perspektiv såsom informationsasymmetriproblem och skattepreferenser.
Förståelse av sitt missbruk : Hypotesen om självmedicinering ur ett individperspektiv
Denna studie belyser självmedicineringshypotesen (SMH), inom missbruk, ur ett individperspektiv. Fyra semistrukturerade intervjuer har genomförts med individer som uppfattar sig som självmedicinerare. En fenomenologisk analys har utförts baserad på tre teman; alkoholdebuten, drogvalet och missbruket efter debuten. I analysen framkommer att en av intervjupersonerna självmedicinerade enligt SMH, en person gjorde det till viss del, medan två inte självmedicinerade i enighet med SMH. Studien behandlar frågan om sambandet mellan effektsökande och drogval.
c-cytokromer hos den (per)kloratreducerande bakterien GR-1 : samt en jämförande studie av c-cytokromer från GR-1, Ideonella dechloratans och Dechloromonas aromatica
Arbetet beskriver en analys av innehållet av membranbundna och periplasmiska c-cytokromer hos perkloratodlade GR-1 och jämförelser med c-cytokrominnehållet hos Ideonella dechloratans och andra kända c-cytokromer, samt med genomet för Dechloromonas aromatica. Den jämförande studien av c-cytokromer gjordes med syftet att undersöka en hypotes om att bakterierna använder olika vägar för elektronöverföring till det periplasmiska enzymet (per)kloratreduktas. Cellmembran från GR-1 renframställdes genom ultracentrifugering och periplasma preparerades fram med hjälp av osmotisk chock. Fraktionerna analyserades sedan med SDS-PAGE och peptider med kovalent bundet hem (c-cytokromer) detekterades med hjälp av en specifik färgreaktion. Även Touchdown PCR med degenererade primrar genomfördes på isolerat DNA från GR-1 i ett försök att finna en gen kodande för ett NapC/NirT-liknande protein.
Validering av GPS teknikens användande
Beteendestudier, där man vill undersöka position eller läge hos individer, kan utföras på olika sätt. Videofilmning, direkta observationer och GPS, (Global Positioning System) är exempel på olika metoder för att utföra dessa studier. Det har sedan en längre tid tillbaka varit vanligt att man utför direkta observationer, vilka kan vara tidskrävande. Genom att utföra studier med hjälp av GPS-mottagare kan tiden för studien förkortas.
GPS har används i tidigare studier med hästar.
Sätter jag mig i ett hörn, blir jag äldre än vad jag är : En kvalitativ studie om insatsen aktivering inom hemtjänsten
From the day we are born, we slowly grow old and sooner or later most people will have to use geriatric care provided by the community. In the Swedish model, society is responsible for the geriatric care, so the elderly can live a dignified, meaningful and active life. Home help insert activity is designed to help elderly get their social needs satisfied in the form of, for example, being outdoors, walk and visit a friend or some other form of social interaction. The study's purpose is to study how older people use and perceive bet activation in the municipal home care. To find out how this was conducted five interviews with older people who have help from home care to insert activation was made.
Målformuleringar och deras påverkan på inre motivation: Universitetsstudenters inre motivation för lärande
Syftet med detta examensarbete är att studera den påverkan som olika typer av mål har på inre motivation för studenter. Hypotesen är att försökspersoner i genomsnitt erhåller högre inre motivation för en uppgift med inlärningsmål än för en identisk uppgift med resultatmål. Uppgiften behandlade det psykologiska begreppet kognitiv dissonans. Uppgiften genomfördes av 30 försökspersoner där15utförde uppgiften med inlärningsmål och 15 med resultatmål. Efter att försökspersonerna hade genomfört uppgiften mättes deras inre motivation för uppgiften med hjälp av en enkät.
Stöd, reflektion och hjälp att inkludera : Lärares syn på specialpedagogisk handledning
The purpose of this study was to gain deeper knowledge about the special needs of guidance significance as an aid to students based on teachers' views and perceptions.Eight teachers from three different municipalities, active in primary school and middle school have been interviewed since all have participated in and have experience with special needs tutoring. Their responses were compiled and answered the three research questions: What experiences have teachers of special education counseling? How do teachers the guidance they received from a special teacher? What effect has the special educational guidance given for the inclusive education? The result shows that the special educational tutorial helps teachers gain a deeper understanding of students in need of special support and guidance to the mission vary in scope and content. The special educational tutorial that is aimed directly at the teachers seem to have a positive effect on inclusion and a critical/dilemma perspective while the consultative guidance primarily directed towards the adaptation of educational material and allows students to walk out of the classroom to receive special education promotes exclusion and ability grouping and a compensatory perspectives. From a sociocultural perspective pointing results of the study that teachers with special education tutoring experience to students in an inclusive education contribute to each other's learning,creating meaningful for everyone involved..