In this thesis, I analyze the weight functions used in moving least squares (MLS) methods to construct implicit surfaces that interpolate or approximate polygon soup. I found that one previous method that presented an analytic solution to the integrated moving least squares method has issues with degeneracies because they changed the weight functions to decrease too slowly. Inspired by their method, I derived a bound for the choice of weight function for implicit moving least squares (IMLS) methods to avoid these degeneracies in two-dimensions and in three-dimensions. Based on this bound, I give a theoretical proof of the correctness of the moving least squares interpolation and approximation scheme with weight function used in Shen et al. when used on closed polyhedrons. Further, previous IMLS implicit surface reconstruction algorithms that ll holes and gaps create surfaces with obvious bulges due to an intrinsic property of MLS. I propose a generalized IMLS method using a Gaussian distribution function to re-weight each polygon, making nearer polygons dominate and reducing the bulges on holes and gaps.

The application of personality assessment techniques for clinical and personnel decisions has always been a major activity for psychologists all over the world. In South Africa personality assessment tools are often used for purposes of selection, placement, determination of job satisfaction and development. Psychological testing in South Africa was originally initiated with white test-takers in mind, and currently none of the available personality questionnaires used in South Africa have been found to provide a reliable and valid picture of personality for all cultural (language) groups. Since 1994 South Africa has had a new constitution and there are stronger demands for the cultural appropriateness of psychological tests. In this study, the implicit perspectives of personality of Sesotho-speaking South Africans are being determined in order to develop a more culturally fair personality assessment tool for South Africans. A qualitative research design was used with an interview as data-gathering instrument. A Sesotho-speaking fieldworker was recruited to interview 120 Sesotho-speaking South Africans from the Free State Province. The study population was purposely drawn from different sections of the Sesotho-speaking population. A total of 4873 Sesotho-speaker personality descriptors were obtained from the participants and then translated into English. Content analysis was used to analyse, interpret and reduce these descriptors to a total of 94 personality characteristics, which highlights the most important perspectives of personality for Sesotho-speaking individuals. The personality characteristics were divided into seven categories, namely sociability, interpersonal relatedness, emotionality, meanness, conscientiousness, dominance and other. The majority of the characteristics are representative of communalism or the collective consciousness in African communities. Sesotho-speaking persons are socially active and are sympathetic, caring and tolerant towards others, they are willing to become involved in the feelings, problems and welfare of others. The findings of this study were compared to the Five Factor Model and evidence were found for the extraversion, conscientiousness, neuroticism and agreeableness factors, but not for the openness to experience factor. In comparison with the Chinese Personality Assessment Inventory support were found for 17 of the 22 personality scales. Characteristics such as admonitory, resourcefulness, religion, humour, fair, judgemental and discriminating can be seen as characteristics indigenous to the Sesotho culture. Limitations in the research are identified and recommendations for future research are made. / Thesis (M.A. (Industrial Psychology))--North-West University, Potchefstroom Campus, 2006.

Since its creation in 1998, the Implicit Association Test (IAT) has become a commonly used measure in social psychology and related fields of research. Studies of the cognitive processes involved in the IAT are necessary to establish the validity of this measure and to suggest further refinements to its use and interpretation. The current thesis used ERPs to study cognitive processes associated with the IAT. The first experiment found significant differences in P300 amplitude in the Congruent and Incongruent conditions, which were interpreted as a reflection of greater equivocation in the Incongruent condition. The second experiment tested the task-set switching account of the IAT in much greater detail by analyzing each trial type separately. In the Congruent condition, all trial types elicited the same amplitude P300. Local probability, and the consequent checking and updating of working memory, was thought to be responsible for differences between trials of the Incongruent condition that required or did not require a task switch. The final experiment examined the role of working memory in the IAT by introducing obtrusive and irrelevant auditory stimuli. The results of Experiment 3 indicated that the introduction of an obtrusive and irrelevant auditory increment deviant has little overall effect on the IAT, and a similar effect on switch and no-switch trials within the Incongruent condition. This could have been because both the Congruent and Incongruent conditions of the IAT make such extensive demands on central processing resources that few are available to allow for the switching of attention, or it is possible that the IAT does not require significant updating of working memory. The usefulness of ERPs in the study of the IAT effect is demonstrated by the current research. In particular, the finding that behavioural results were not always consistent with the ERP results demonstrates that electrophysiological measures can complement traditional behavioural measures.

This study reviews the burgeoning literature on followership and tests propositions from a recently developed theoretical framework to explore the relationship between follower behaviours, leaders’ perceptions of follower trustworthiness (trusting beliefs), and leaders’ subsequent willingness to be vulnerable to the actions of their followers (trusting intentions). Leaders’ implicit followership theories (IFTs) were examined as a potential moderator of both relationships. Results revealed that passive followership influenced leaders’ trusting beliefs negatively, whereas collaborative followership had a positive influence on leaders’ trusting beliefs as well as leaders’ trusting intentions. The most extreme form of proactive followership, challenging followership, had nonsignificant relationships with leaders’ trusting beliefs and intentions. In addition, leaders’ IFTs did not interact with followership behaviour to produce any change in leaders’ trusting beliefs. However, IFTs were found to moderate the relationship between leaders’ trusting beliefs and trusting intentions. Implications for research and practice are discussed in light of the results.

Uppsatsen undersöker och diskuterar begreppet "implicit författare" med utgångspunkt i en hypotetisk-intentionalistisk tolkningsmodell för skönlitterära texter. Uppsatsens syfte är att fördjupa och precisera begreppet "implicit författare", samt att visa hur begreppet kan vara behjälpligt vid en analys av ett skönlitterärt verk. Uppsatsen avslutas med en exemplifierande analys av inledningen till Karl Ove Knausgårds roman Min kamp.

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Ämnet kompetensöverföring och kompetensbevaring är ett aktuellt ämne för dagens arbetsmarknad. Generationen Baby Boomers, den ovanligt stora efterkrigsgenerationen, personer födda mellan 1946 – 1964 (Valueoptions, 2015), kommer de kommande 10 åren att gå i pension vilket riskerar att även deras komptetens går förlorad. Kompetensöverföring och kompetensbevaring är även aktuellt vid ett ägarskifte eller en nyanställning. Om kompetensöverföringen inom organisationer inte sker på ett korrekt sätt så löper det en stor risk att värdefull kunskap går förlorad. Kompetensen och den tysta kunskapen är viktiga att identifiera och bevara till nyanställd personal. Vår uppsats syftar till möjliggörandet av kunskapsöverföringen samt hur man kan göra det på ett effektivt sätt. Forskningsfråga Hur kan kompetensbevaring ske i ett personalskifte utan att förlora värdefull kompetens? Syfte Syftet med studien är att se hur man på ett enkelt sätt kan genomföra kompetensbevaring utan att förlora värdefull kompetens. Resultatet kan sedan användas av företag i framtiden. Studien kommer att lyfta fram eventuella problematiska aspekter samt värdefullt verktyg för en lyckad kompetensbevaring. Förutsättningar, differenser samt möjligheter på två helt olika företag kommer att undersökas och analyseras för att nå ett resultat med studien. Metod En kvalitativ forskning har utförts med strukturerade- och semistrukturerade intervjuer på två olika företag där bakgrundsliggande aspekter har undersökts som innefattar kultur, miljö och arbetssätt som möjliggör en god kunskapsöverföring. Vi har intervjuat en HR-specialist på Fortifikationsverket samt två chefer och två rådgivare på SEB-banken. Litteraturen i studien omfattar områden där förutsättningarna för en korrekt organisatorisk kunskapsöverföring uppstår och där personalen i fråga är motiverade och har viljan att delge sina kompetenser.  Resultat Resultat av studien är en innovativ kompetenbevaringsmodell, som kan användas av företag med brister i sin kompetensöverföring vid rekrytering och bevaring av personal. Vi har undersökt förutsättningar, differenser samt möjligheter på två helt olika företag och analyserat det för att nå resultatet.  Modellens validitet har säkerhetsställts av Näshultastugor AB, ett företag som inte var insatta i studien från början, utan togs in endast för detta syfte.

The present study investigated age differences in implicit memory for positive, negative and neutral words. We also explored how cognitive control and time of testing influence emotional memory. Participants completed a one-back picture comparison task with superimposed distracting emotional and neutral words. Memory for distracting words was tested using an implicit memory test and cognitive control by a flanker task. Priming was significant for negative but not for positive and neutral words. Memory for distracting negative words was greater at non-optimal times of day for young adults but similar across the day for older adults. A high level of cognitive control was related to greater priming for negative words in young adults and lower priming in older adults. Priming for neutral words was enhanced in high cognitive control participants when stimuli contained emotional words that were relevant to one’s goals, implicating the use of emotion regulation at an unconscious level.

This thesis examines the effects of linguistic input on the development of children’s epistemic concepts. It draws upon two fundamental questions in the field of cognitive development: (a) whether distinctions between automatic and controlled forms of cognitive processing are indicative of underlying conceptual differences, and (b) whether language is critical to the process of concept development. To establish the background of the current research, a summary of how these theoretical questions have been addressed in other fields of cognitive psychology is first provided (Chapter 1). These questions are then re- examined within the specific domain of epistemic concept development (Chapter 2). Changes in false-belief processing that occur between infancy and the early preschool years are discussed in relation to two competing theories of false-belief development. A framework to explain how language promotes children’s transition between automatic and controlled forms of processing is then provided. It is suggested that language facilitates change by both reducing the cognitive demands associated with controlled response tasks as well as assisting with the formation of robust epistemic representations. An empirical study that was designed to examine the effects of epistemic language (i.e., verbs and syntax) on children’s automatic and controlled processing of belief is then described (Chapters 3 to 5). Eighty-four children (Mage = 3;5 years), who initially failed elicited measures of false-belief, were trained with visual contexts of true- and false-belief. The critical manipulation across three conditions was the linguistic input presented in conjunction with these contexts. Children heard narrations that contained either (a) the description of an agent’s actions without an epistemic verb, (b) a familiar epistemic verb (thinks) across both contexts, or (c) the familiar epistemic verb in contexts of true-belief and a novel epistemic verb (gorps) in contexts of false-belief. Results demonstrated a significant advantage for children who were trained with epistemic verbs on spontaneous measures of false-belief (i.e., anticipatory gaze). Significant effects of epistemic verb exposure were also demonstrated in novel contexts of belief induction. Implications of these findings are discussed in relation to theories that make distinct predictions about the role of language in epistemic concept development (Chapter 6).

The present study investigated age differences in implicit memory for positive, negative and neutral words. We also explored how cognitive control and time of testing influence emotional memory. Participants completed a one-back picture comparison task with superimposed distracting emotional and neutral words. Memory for distracting words was tested using an implicit memory test and cognitive control by a flanker task. Priming was significant for negative but not for positive and neutral words. Memory for distracting negative words was greater at non-optimal times of day for young adults but similar across the day for older adults. A high level of cognitive control was related to greater priming for negative words in young adults and lower priming in older adults. Priming for neutral words was enhanced in high cognitive control participants when stimuli contained emotional words that were relevant to one’s goals, implicating the use of emotion regulation at an unconscious level.