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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
161

Impact Bias och Empathy Gaps : - en studie om skillnader mellan känslor och preferenser.

Marshall Shedden, Anna January 2012 (has links)
Syftet med föreliggande studie var att försöka reda i litteraturen kring två välkända begrepp inom Affective Forecasting nämligen Impact Bias, som innebär att människor har en tendens att överskatta i vilken utsträckning de kommer att uppleva en viss känsla i en framtida situation än vad som senare visar sig vara fallet, och Empathy Gaps, som innebär att människor har en tendens att underskatta i vilken grad känslotillstånd kommer att påverka deras preferenser i en framtida situation samt pröva dessa begrepp i en och samma enkätundersökning. Etthundra sextiotvå studenter, slumpvist uppdelade i två grupper, Känslogrupp och Preferensgrupp, deltog frivilligt i undersökningen. Enkätundersökningen var en mixad design med grupp (känsla kontra preferens) som mellangruppsfaktor och förtest kontra eftertest som inomgruppsfaktor. I studien visade samtliga gruppers resultat i linje med Impact Bias teorin, dvs. att deltagarna i både Känslogrupp och Preferensgrupp skattade lägre i eftertest (actual) än pretest (forecasting). Resultatet diskuteras bla. utifrån Construal Level Theory, CLT. Förslag på vidare forskning ges.
162

Detecting deception in second-language speakers

Da Silva, Cayla S. 01 April 2011 (has links)
It is currently unknown how lie detection accuracy is affected when someone is speaking in his or her second language. We examined whether language proficiency had an impact on lie detection. We hypothesized that when judging the veracity of second-language speakers, participants would be better able to discriminate between truth- and lie-tellers and would have bias toward picking ‘lying’ since they may display cues associated with lying when communicating.We collected video footage of native- and second-language English speakers who lied or told the truth about a transgression. Undergraduate students (N = 51) then judged the veracity of these clips and indicated how confident they were in their ratings. Participants were most accurate and confident when judging native-language truth-tellers. In addition, participants were more likely to exhibit a truth-bias when observing native-language speakers, whereas they were more likely to exhibit a lie-bias when viewing second-language speakers. Implications for the justice system will be discussed. / UOIT
163

Charged particle multiplicities in pp interactions at p s = 900 GeV and p s = 7 TeV measured with the ATLAS detector at the LHC

Volpi, Matteo 16 December 2010 (has links)
La tesis se centra en los estudios de la producción inelástica de las partículas cargadas en el colisionador LHC que opera en la frontera de la energía del centro de masa de 7 TeV. Los datos corresponden a 16 μb-1 de la primera recogida de la luminosidad integrada por el detector ATLAS, a principios de 2010. Las secciones de la producción de las partículas cargadas fueron comparadas con la variedad de los populares modelos fenomenológicos de la QCD suave. Los resultados reportados en la tesis constituyen una muestra de datos correspondiente a una nueva región cinemática de QCD. Por lo tanto, el leve (10-20)% desacuerdo entre los datos y las predicciones de diferentes modelos fenomenológicos no fue una sorpresa. Los resultados reportados estuve utilizados para ajustar los modelos existentes de soft QCD para reproducir de manera adecuada la hadrónica presente en las colisiones del LHC. El tipo de estudios presentados en la tesis pertenece a una línea de investigación bien establecida en el ámbito de la física de alta energía (HEP), que consiste en el pleno re-descubrimiento del Modelo Estándar antes de tratar de avanzar más. Los estudios presentados en la tesis han conducido ya a una publicación en una revista líder de la física de altas energías, PLB (marzo 2010), y otro articulo está en preparación. Tuve un papel importante en esta primera publicación de los resultados de ATLAS. Otro punto importante de los trabajos presentados en la tesis puede ser resumido de la siguiente manera: 1) Muy bien estructurado y buena presentación de los estudios realizados. 2) Meticuloso seguimiento de los cánones de análisis recogidos en la comunidad HEP. 3) El uso adecuado de la información más actualizada de simulaciones de soft QCD. 4) Estudios cuidadosos de los efectos de las condiciones del detector y de la eficiencia del trigger para seleccionar los resultados. 5) La evaluación cuidadosa de los errores sistemáticos. / The thesis is focused on the studies of the inclusive inelastic production of the charged particles at the LHC collider that operates at the frontier center-of-mass energy of 7TeV. The analyzed data correspond to about sixteen inverse micro-barn of the very first integrated luminosity collected by the ATLAS detector by the beginning of 2010. Having fully taken advantage of above factors, scrupulous studies performed in the thesis resulted in the measurements of the charged particles inclusive production cross-sections that were compared to the variety of popular phenomenological models of the soft QCD. The results reported in the thesis constitute a novel data sample corresponding to a new kinematic QCD region. Thus, the mild (10-20)% disagreement between the data and the predictions of different phenomenological models came as no surprise. The reported results were used to adjust existing soft QCD models to adequately reproduce the busy hadronic environment present in the LHC collisions, thus reinforcing current theoretical framework. The type of the studies presented in the thesis belongs to a well established research line in the field of high energy physic (HEP) that consists of full re-discovery of the Standard Model in the environment of new collider experiment before attempting to move further. Studies presented in the thesis have already led to one publication in the leading high energy physics journal, PLB (March 2010), and another paper is in preparation. I took an important role in this, very first publication of the ATLAS results, often considered as an informal criteria for the PhD thesis merits inside of the HEP community. Additional strong points of the work presented in the thesis may be summarized as following: 1) Very well structured and focused presentation of the studies performed. 2) Meticulous following of the analysis canons adopted in the HEP community. 3) Appropriate usage of the most up-to-date soft QCD simulations. 4) Careful studies of the impact of the detector conditions and trigger selection efficiency on the results. 5) Careful evaluation of the systematic errors on the reported cross-sections and distributions.
164

The Color Line and Georgia History Textbooks: A Content Analysis

Mitchell, Michele D 01 August 2013 (has links)
The purpose of this research is to define racialized textbook bias, conduct a content analysis of Georgia history textbooks, and answer the following question: how is race framed in contemporary Georgia history textbooks? A content analysis of nine Georgia history textbooks was completed for grades two and eight. A Du Boisian theoretical framing of race prejudice as the macro-social condition of the micro-social process of race was an integral component of the content analysis. The findings revealed the existence of racialized textbook bias in the form of marginalization, compartmentalization, and omission suggesting the continuation of White supremacy and Black oppression in the process of education in Georgia public schools.
165

The Effect of Situational Attribution Training on Majority Group Members’ Psychophysiological Responses to Out-group Members

Myers, Ashley 11 May 2012 (has links)
The present research explored the effects of Situational Attribution Training (Stewart, Latu, Kawakami, & Myers, 2010) on affective bias utilizing facial electromyography (EMG). Participants viewed a slideshow of randomly presented photographs of both and White and Black American men while rating how “friendly” each individual appeared. Simultaneously, corrugator and zygomaticus region activity, linked with positive and negative affect, respectively, was measured. Of these participants, half were randomly assigned to complete Situational Attribution Training beforehand. Results for EMG activity suggested no significant differences in EMG activity for White compared to Black photographs for either the training or control participants; thus, this study did not find evidence of affective bias by way of corrugator or zygomaticus activity. However, errors in slideshow presentation prevent clear interpretation of these results. Suggestions for future research and ways in which bias errors can be avoided are discussed.
166

Vad som sägs eller vem som säger det och hur det påverkar åsiktsskapande

Roos, Victoria January 2013 (has links)
Grupptillhörighetens påverkan på uppfattningen av politiska uttalanden är något som inte tidigare studerats inom svensk forskning. I denna experimentella studie deltog 96 studenter, varav 25 män. Genom en enkätundersökning testades avsändarens betydelse på hur politiska uttalanden värderas. Syftet var att se om ett politiskt uttalande uppfattades olika beroende på avsändare och huruvida deltagarens grupptillhörighet påverkade uppfattningen om uttalandet. Fyra olika enkäter delades ut, innehållandes samma uttalande men olika påstådda avsändare. Det antogs att deltagaren skulle uppfatta uttalandet mer positivt när det kom från det parti deltagaren sympatiserade med. Det antogs även att uttalandet från Sverigedemokraterna skulle uppfattas mer negativt än de andra uttalandena bland de deltagare som inte röstade på Sverigedemokraterna. Deltagarna skattade uttalandet med hjälp av tio värdeladdade ord. Resultatet visade att individer såg mer negativt på ett uttalande som påstås komma från Sverigedemokraterna än när uttalandet sades komma från övriga påstådda avsändarna. Resultaten diskuterades utifrån förutsättningarna vid materialinsamlingen.
167

Are students acting rational? : A study in Behavioural finance.

Akbas, Madeleine January 2011 (has links)
Finance taught in schools generally starts with the efficient market hypothesis, which holds the assumptions of rational investors and markets where all information available is reflected. In recent years however, a lot of critique has been given to efficient markets and its assumptions of rationality. The greatest reason to this is because of crashes and irregularities in the market. The field of behavioural finance has been in existence for many years but is not as established as the efficient market hypothesis. It says that investors may act irrational and are mostly trying to explain the reasons why. People’s behaviour is being closely studied in order to see patterns of behaviour and this has resulted in different heuristics and biases. Heuristics are instances that come to mind when making a decision and differ a lot depending on what kind of decision you are making. Since there are many different heuristics, this thesis only focused on one: the affect heuristic. The method was constructed in a specific way in order to show if the students showed affect in their answers. Also, a check for home bias was made. This thesis presents the behaviour of two different groups of students, finance students from Sweden and MBE-students from Germany. It was proved that both of the groups were acting irrational in their investment decisions. The reason to their irrationality is both because the method was constructed in a way to strategically mislead them but also because of the data collection. There were also some differences noticed depending on age groups, former studies in finance and work experience in finance. The affect heuristic was clearly shown in the answers by both groups of students. A home bias was also noticed in the answers. It was proven that 10,3 percent of the Swedish students invested in Swedish companies in both their first and second choice, even though the three best companies were German. None of the German Students decided to invest in a Swedish company in both the first and second choice.
168

Union Bargaining,Central Bank Conservatism,and Inflation Bias

Chen, Hung-Tong 18 August 2004 (has links)
None
169

A Study of Power Amplifier Distortion due to DC Bias Perturbation and a Push-Pull Design of CMOS Class-E Power Amplifier Using Power Combining

Chen, Chih-Hao 30 July 2009 (has links)
Abstract¡G This thesis studies the memory effect due to bias perturbation on digital predistortion technique, and employs multi-tone continuous wave signal and digital modulation signals with different bandwidth to discuss the performance of digital predistortion technique. Memory effect makes a great impact on the digital predistortion technique, and bias perturbation is one of the major causes. Lowering the bias perturbation can improve the effectiveness of digital predistortion technique. Another focus of this thesis is to design a Class E power amplifier in 0.18 £gm CMOS process. The power amplifier uses cascode structure to alleviate the breakdown voltage problem and employs power combining technique to achieve impedance transformation on chip for the purpose of increasing the output power and efficiency.
170

Essays in computational finance /

Rom-Poulsen, Niels. January 2005 (has links) (PDF)
Business School, Diss.--Copenhagen, 2006.

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