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731 Uppsatser om Measurement bias - Sida 6 av 49
Energibalans Dåva Kraftvärmeverk
To be able to measure high-surge voltages and transients with short rise times youneed measuring instruments with a high sampling frequency and large Bandwidth.These surges and transients occur primarily at lightning but can also occur at forexample at connecting errors at an electrical switch-gear. This report describes thework with finding two solutions for measuring and log data from these surges andtransients. One temporary solution where a measurement program has beendeveloped. A second solution where different company solutions have been analyzedto decide which fits best. For these measurement solutions two solutions for bringingdown the voltage has been used.
Skillnader i uppvisat bias mellan utmanare och försvarare av status quo
De som förespråkar en ändring av det rådande läget (status quo), inom exempelvis politik, har visat sig vara mer påverkade av naiv realism än de som vill behålla status quo. Ytterligare studier visar att den politiska tillhörigheten kan vara av betydelse för hur påverkade av naiv realism dessa utmanare är. I två studier har det testats om naiv realism påverkas av positionen till status quo (utmana eller försvara) eller av den politiska tillhörigheten. I båda studier har en tydlig favorisering av den egna gruppen påträffats, samt att personer i utmanarposition gentemot status quo gjorde signifikant större skillnad mellan ingrupp och utgrupp än vad försvarare av status quo gjorde. Den politiska tillhörigheten visade sig inte vara av betydelse.
Mät och loggningsutrustning för spänningstransienter.
To be able to measure high-surge voltages and transients with short rise times youneed measuring instruments with a high sampling frequency and large Bandwidth.These surges and transients occur primarily at lightning but can also occur at forexample at connecting errors at an electrical switch-gear. This report describes thework with finding two solutions for measuring and log data from these surges andtransients. One temporary solution where a measurement program has beendeveloped. A second solution where different company solutions have been analyzedto decide which fits best. For these measurement solutions two solutions for bringingdown the voltage has been used.
Ordklassers betydelse och effekter i enkätfrågor: Abstraktionsnivåer och Stereotyptänkande
Enkäter används flitigt idag. Spector (1994) menade att endast en liten del av den förklarade variansen i enkäter utgörs av det som önskas mäta. Bryggan mellan respondenten och enkäten är språket. Enligt Whorf-Safir hypotesen styrs våra tankar av språket. Semin och Fiedler (1988) menade att ordklasserna har olika abstraktionsnivåer.
B?r synbiotika ing? i behandlingen av PCOS? Effekten av synbiotika p? lipidprofilen - En systematisk litteratur?versikt
Syfte: Syftet med denna systematiska litteratur?versikt var att unders?ka det
vetenskapliga underlaget f?r om synbiotika har n?gon effekt p? lipidprofilen
hos kvinnor med diagnostiserad PCOS
Metod: Litteraturs?kningen genomf?rdes i databaserna PubMed och Scopus.
Inklusionskriterier var kvinnor med diagnostiserad PCOS enligt Rotterdamkriterierna,
RCT-studier, studier skrivna p? svenska eller engelska och
uppf?ljningstid under minst tolv veckor. Exklusionskriterier var intervention
kombinerad med annan ytterligare behandling ?n synbiotika.Valda utfallsm?tt
var HDL, LDL, triglycerider och totalkolesterol. De inkluderande studierna
granskades f?r att bed?ma risk f?r bias enligt SBU:s granskningsmall
?bed?mning av randomiserade studier (effekt av att tilldelas en intervention
(ITT))?.
Performance of laying hens in a cognitive bias task : effect of time since change of environment
In the debate on laying hen welfare, and specifically housing conditions, the main focushas been on physiological and behavioural measures. What is lacking is knowledge of howthe hen experiences the situation ? her state of mind.This study is an attempt to gain insight into the private mental states of former batteryhens. It uses a cognitive bias method based on spatial judgement, i.e. judgement of aambiguous stimulus placed spatially in between a reinforced and an unreinforced stimulus.This method has previously shown differences in judgement by animals in enriched versuspoor housing.
Prestationsmätning av Kreativt Arbete : en kulturstudie
Authors: Maria Bergholtz, Alexander WestessonTutor: Daniel EricssonTitle: Performance Measurement of Creative work ? a culture study at PS CommunicationKeywords: Key Performance Indicators, Organizational Culture, Macro-culture, Subculture,Micro-culture, Art, Business, Creativity, PS CommunicationIn the paper?s introductory chapter, the chosen problem area regarding art and business willbe presented. The paper?s studied empirical case will also be introduced here. This then leadsto the reports chosen research questions:How do the company management and the companies? creative personnel approach differ inthe discussion regarding performance measurement on PS Communication?-What causes these differences?What impact does the corporate culture have in the discussion about performancemeasurement of PS Communication?-Is the corporate culture weak or strong?The purpose of this paper is to resolve the stand still in the discussion regarding performancemanagement by creating an understanding of different people active in the organization?sapproach to performance measurement.
Mät och loggningsutrustning för spänningstransienter
To be able to measure high-surge voltages and transients with short rise times youneed measuring instruments with a high sampling frequency and large Bandwidth.These surges and transients occur primarily at lightning but can also occur at forexample at connecting errors at an electrical switch-gear. This report describes thework with finding two solutions for measuring and log data from these surges andtransients. One temporary solution where a measurement program has beendeveloped. A second solution where different company solutions have been analyzedto decide which fits best. For these measurement solutions two solutions for bringingdown the voltage has been used.
Utveckling av metoder att mäta centrering av skruvhål i skär
There have been, in some rare cases, difficulties with clamping of inserts with U-holesin their tool holder. According to the complaints, the inserts could not be properlyclamped or could fracture when clamped. A study has shown that variations inclamping behaviour are mainly depending by the position of the screw hole in the toolholder and the centering of the screw hole in the insert.The focus of this project has been the centering of screw hole in insert. It has beenshown that the screw holes are not always enough centered in the insert. Theproblem may occur after a certain step in the production, i.e.
Problematiska mönster eller enskilda problem? : En kvantitativ studie av kön och problembedömningar i socialtjänstens handläggning av ekonomiskt bistånd
I Sverige finns ett anmäkningsvärt stort utrymme för enskilda handläggares subjektivitet i bedömningen av socialbidragsklienter. Tidigare studier baserade på vinjettdata tyder på att handläggarnas bedömningar av klienternas problem och hja?lpbehov tenderar att reproducera traditionella ko?nsroller. Samtidigt saknas kunskap om betydelsen av kön i bedömningar av riktiga klienter. I den här studien analyseras könsrelaterade mönster i enkätdata om 138 handläggares bedömningar av psykosociala och hälsorelaterade problem hos 471 socialbidragsklienter.
Biosensorsystem fo?r o?vervakning av vattenkvalitet
Sweden's drinking water quality is considered to be high partly due to a high quality of the raw water and a well developed sewage infrastructure. Despite this, there is water contamination that could be prevented by installation of a sophisticated early warning system. Some of the major players in the production of drinking water have already invested in different types of early warning systems to ensure drinking water of high quality. There are various forms of early warning systems where automatic monitoring of E. Coli is an interesting alternative.
Hur förklarar företag i telekombranschen sina resultat i årsredovisningarna? : En studie över Phonera, Tele2 och TeliaSoneras resultatförklaringar 2001-2007
Previously studies have shown that the way companies explain outcome in their annual report is not totally trustworthy. Studies show that the management has a self serving bias when they explain the result to give a positive image of the company. Our study is based on investigations into this phenomenon in the telecom market in Sweden. Turbulent market conditions with, among other, deregulation of the monopoly of fixed telephony and a huge technical evolution, which has led to an increase in competition, is the reason to why we have chosen to study the telecom market in Sweden. As a benchmark in our study the attribution theory will be used.
Precisionsnutrition vs. Standardiserade Kostr?d Finns det en effekt med precisionsnutrition j?mf?rt med standardiserade kostr?d f?r viktnedg?ng? - En Systematisk ?versiktsartikel
Syfte:
Syftet med denna systematiska ?versiktsartikel ?r att unders?ka det vetenskapliga underlaget om precisionsnutrition har en st?rre effekt p? viktnedg?ng j?mf?rt med standardiserade kostr?d vid ?vervikt och obesitas hos vuxna personer.
Metod:
En litteraturs?kning utf?rdes och inkluderade randomiserade kontrollerade humanstudier som unders?kte viktf?r?ndringar med hj?lp av precisionsnutrition. Inklusionskriterierna omfattade vuxna ?ver 18 ?r med ett BMI ?ver 25. Datainsamlingen utf?rdes genom s?kningar p? PubMed och Scopus med specificerade s?kord och filter.
Automatiserad mätning av kvalité : Varför är inte all mätningautomatiserad?
AbstractThis bachelor?s thesis at the Department of Production Engineering at the Royal Institute of Technology in Stockholm deals with the subject of automated metrology. The degree of automation of tasks within production has been a growing trend but the measurement of quality has not followed the same trend. The main thesis follows:What incentives are there to automate the measurement of quality in production?What factors are crucial and why are not all metrology automated?The thesis comes along with a number of sub-queries and delimitations.The working method includes both theoretical and empirical studies.
Jämförelse mellan ?Auditory Brainstem Response (ABR) och ?Auditory Steady State Response? (ASSR) för att uppskatta hörtrösklar på barn i narkos. Kan testtiden minska om 500 Hz utesluts vid ASSR-mätning?
ObjectiveThe objective of this study was to investigate the clinical application to use ASSR in anesthetized childrenDesignOne main ambition of the investigation was to compare hearing threshold using ABR with estimated hearing threshold using ASSR. Another aim was to examine if the duration of an ASSR measurement could be reduced by only using the frequencies 1, 2 and 4 kHz and exclude the frequency 0.5 kHz. This is a retrospective study using electrophysiological measurement from a database.ResultResults showed a high correlation between hearing threshold using ABR and estimated thresholds using ASSR, with the frequency 0.5 kHz showing a slightly lower correlation. Result also showed that the test duration was increased when using all test frequencies in ASSR-measurement compared to when 0.5kHz was excluded. ConclusionThe study showed a high correlation when comparing hearing threshold using ABR and ASSR.