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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.
1

The Bridging Technique: Crossing Over the Modality Shifting Effect

Alicia, Thomas 01 January 2015 (has links)
Operator responsiveness to critical alarm/alert display systems must rely on faster and safer behavioral responses in order to ensure mission success in complex environments such as the operator station of an Unmanned Aerial System (UAS). An important design consideration for effective UAS interfaces is how to map these critical alarm/alert display systems to an appropriate sensory modality (e.g., visual or auditory) (Sarter, 2006). For example, if an alarm is presented during a mission in a modality already highly taxed or overloaded, this can result in increased response time (RT), thereby decreasing operator performance (Wickens, 1976). To overcome this problem, system designers may allow the switching of the alarm display from a highly-taxed to a less-taxed modality (Stanney et al., 2004). However, this modality switch may produce a deleterious effect known as the Modality Shifting Effect (MSE) that erodes the expected performance gain (Spence & Driver, 1997). The goal of this research was to empirically examine a technique called bridging which allows the transitioning of a cautionary alarm display from one modality to another while simultaneously counteracting the Modality Shifting Effect. Sixty-four participants were required to complete either a challenging visual or auditory task using a computer-based UAS simulation environment while responding to both visual and auditory alarms. An approach was selected which utilized two 1 (task modality) x 2 (switching technique) ANCOVAs and one 2 (modality) x 2 (technique) ANCOVA, using baseline auditory and visual RT as covariates, to examine differences in alarm response times when the alert modality was changed abruptly or with the bridging technique from a highly loaded sensory channel to an underloaded sensory channel. It was hypothesized that the bridging technique condition would show faster response times for a new unexpected modality versus the abrupt switching condition. The results indicated only a marginal decrease in response times for the auditory alerts and a larger yet not statistically significant effect for the visual alerts; results were also not statistically significant for the analysis collapsed across modality. Findings suggest that there may be some benefit of the bridging technique on performance of alarm responsiveness, but further research is still needed before suggesting generalizable design guidelines for switching modalities which can apply in a variety of complex human-machine systems.
2

Comparing Types Of Adaptive Automation Within A Multi-tasking Environment

Taylor, Grant S 01 January 2012 (has links)
Throughout the many years of research examining the various effects of automation on operator performance, stress, workload, etc., the focus has traditionally been on the level of automation, and the invocation methods used to alter it. The goal of the current study is to instead examine the utilization of various types of automation with the goal of better meeting the operator’s cognitive needs, thus improving their performance, workload, and stress. The task, control of a simulated unmanned robotic system, is designed to specifically stress the operator’s visual perception capabilities to a greater degree. Two types of automation are implemented to support the operator’s performance of the task: an auditory beep aid intended to support visual perception resources, and a driving aid automating control of the vehicle’s navigation, offloading physical action execution resources. Therefore, a comparison can be made between types of automation intended to specifically support the mental dimension that is under the greatest demand (the auditory beep) against those that do not (the driving automation). An additional evaluation is made to determine the benefit of adaptively adjusting the level of each type of automation based on the current level of task demand, as well as the influence of individual differences in personality. Results indicate that the use of the auditory beep aid does improve performance, but also increases Temporal Demand and Effort. Use of driving automation appears to disengage the operator from the task, eliciting a vigilance response. Adaptively altering the level of automation to meet task demands has a mixed effect on performance and workload (reducing both) when the auditory beep automation is used. However, adaptive driving automation is clearly detrimental, iv causing an increase in workload while decreasing performance. Higher levels of Neuroticism are related to poorer threat detection performance, but personality differences show no indication of moderating the effects of either of the experimental manipulations. The results of this study show that the type of automation implemented within an environment has a considerable impact on the operator, in terms of performance as well as cognitive/emotional state
3

An Examination of Power Differentials and Intimate Partner Violence in Lesbian Relationships

Neeves, Sara Elizabeth 20 May 2008 (has links)
Researchers investigating lesbian intimate partner violence (IPV) encourage a movement from the study of prevalence rates to the examination of the complexities of IPV in lesbian relationships (Ristock, 2003). The current study examined power differentials and their associations with reported physical and psychological violence in lesbian relationships. Additionally, the study sought to determine whether power differentials predict physical and psychological violence within the relationship. Secondary data analysis of the National Violence Against Women Survey (NVAWS; Tjaden & Thoennes, 1998) was used. Overall the sample (N = 80) was primarily White, high school graduates, with an average age of 30. A preliminary exploratory factor analysis of a measure used in the NVAWS revealed two factors'jealousy and control tactics. These factor scores were used in later analyses. Chi-square tests revealed no significant relationships between income, age, race, employment, health status, or education power differentials and the presence of physical and psychological violence (i.e., verbal attack). Significant associations were found between control tactics and age, as well as education differentials. Finally, significant associations were found between control tactics and psychological violence, as well as control tactics and jealousy. Multiple linear regressions(MLR) were used to determine which power differential discrepancy scores and factor scores(i.e., jealousy, control tactics [predictors]) could be used to predict physical and psychological violence (criteria). No significant predictions could be made for physical violence. Presence of jealousy and control tactics was found to be a highly significant predictor, accounting for 20% of the variance in psychological violence. / Master of Science
4

”Varför jag lära svenska...”- några invandrarkvinnors syn på svenskspråksinlärning

Törnblom, Emma January 2013 (has links)
ABSTRACT This study focuses on immigrant women in Sweden and how their perceptions of resource loss may affect their motivation to learn Swedish. Focus group discussions were conducted with immigrant women who partake in a Swedish language learning project. Their Swedish language skills were very limited, and all of them had no or very few years of elementary level education. Results of the study suggest that the strongest motivator to learn Swedish is its potential role in facilitating everyday activities.
5

Resursutbyten inom äldreomsorg : Interaktionen vårdgivare-vårdtagare utifrån social resursteori / Resource exchange in residential care homes : Using Social Resource Theory to understand caregiver-caretaker interactions

Hillström, Victor, Asplund, Kristian January 2014 (has links)
Allteftersom livslängden ökar i Sveriges demografiska struktur höjs andelen äldre i befolkningen vilket skapar en ökad efterfrågan av äldreomsorg. För att möta denna efterfrågan krävs ny kunskap, förändringar och förbättringar om hur vi i framtiden kan garantera våra äldre god vårdkvalitet. Genom att använda en mixed-methods design bestående utav datainsamling från kvalitativa och kvantitativa observationer är denna studies syfte att undersöka och beskriva interaktionen mellan vårdgivare och vårdtagare utifrån ett teoretiskt ramverk baserat på social resursteori och en modell för interpersonellt resursutbyte. Studiens primära forskningsfråga är att undersöka vilka interpersonella resurser som utbyts mellan vårdgivare och vårdtagare. Studiens resultat rapporterar att ett brett spektrum av resurser utbyts mellan aktörerna och analysen presenterar två komplimenterande teoretiska dimensioner i vilka olika typer av resursutbyten sker, en socialt orienterad dimension och en uppgiftsorienterad dimension. Denna begreppsbildning möjliggör för en bättre förståelse av de befintliga resursutbyten som utgör interaktionen mellan vårdgivare och vårdtagare då olika resursutbyten kräver olika förutsättningar eller förkunskaper. De kvantitativa resultaten gav stöd till denna teoretiska utveckling som visar att utbyte av socialt orienterade och uppgiftsorienterade resurser inte skedde samtidigt. Slutaktligen kan analysen i denna studie ge vårdgivare, institutioner och organisationer en bättre förståelse för villkoren de olika resursutbytena kräver. Att säkerställa kontinuiteten mellan vårdtagare och vårdgivare möjliggör för långsiktiga och kultiverade relationer, vilket gör socio-dimensionella utbyten mer sannolikare. Social resursteori är potentiellt användbar för att förstå interaktionen mellan vårdgivare och vårtagare i vårdsammanhang. / As life-expectancy rises in the demographic structure of Sweden, the population of elderly citizens steadily increases. To meet the increasing demand of elderly care, new knowledge about how we will grant our elderly good quality care is needed as changes and improvements in public health care becomes increasingly of importance. This study have primary focus on residental care homes in Sweden. Using mixed-methods consisting of data collection using qualitative and quantitative observations, the purpose of this study is to examine and describe the interactions between caregivers and caretakers using a theoretical framework based on social resource theory and a model of interpersonal resource exchange. The primary research question of this study is to examine which interpersonal resources is exchanged between caregivers and caretakers. The results reported a wide range of resource exchange between caregivers and caretakers in the residental care home context. The analysis demonstrated two complimentary theoretical dimensions in which different types of resource exchanges takes place, a social oriented dimension and a task oriented dimension. This conceptualization allows for a better understanding of the existing resource exchanges that constitutes the caregiver-caretaker interaction as certain exchanges requires different prerequisities. Quantitative findings from observations supported this theoretical development, showing that exchanges of social oriented and task oriented resources did not occur concurrently. Conclusively, the analysis presented in this study can provide health care providers, institutions and organizations a better understanding for these different conditions of exchange. Ensuring continuity between caretakers and caregivers enables long-term and cultivated relationships, thus making socio-dimensional exchanges more likely. Social resource theory is potentially useful for understanding interactions between caregivers and caretakers in the residental care home context.
6

Social Knowledge Exchange : How Individuals exchange and interpret information to recieve correct understanding / Social Kunskaps Utbyte : Hur individer utbyter och tolkar information för att få korrekt förståelse

Hagstrand, Simon January 2016 (has links)
No description available.
7

An Analysis of the Factors and Treatments of Spousal Violence

Wu, Liou-chiao 17 February 2005 (has links)
The study aims to analyze the causes and treatments of spousal violence in Taiwan, to explore how Taiwanese people, abused women, and anti-spousal violence workers consider the causes of spousal violence and how they cope with it. Approaches are taken from the viewpoints of social system theory, resource theory and social control theory, and discourse analysis is made on quantitative and qualitative bases. The purpose is to manifest the causes of spousal violence, different tackling methods adopted by abused women from different family and cultural backgrounds, as well as the discrepancies of the third role played by anti-spousal violence workers. The study combines both macro- and micro-level approaches, integrating empirical research and grounded theory research as the methodology to account for the effects of resource variables and social bond variables on spousal violence in Taiwan, and also to probe into the dynamic process and coping modes from the angles of victims and the third role. The source of this study is ¡§Taiwan Social Change Survey¡¨Data , which was conducted by Institute of Sociology Academia Sinica in 2001. Quantitative analysis is based on the data collected, while qualitative analysis is made with in-depth interviews with 10 abused women and 18 anti-spousal violence workers. According to the empirical research of ¡§Taiwan Social Change Survey¡¨Data¡]2001¡^ , when samples of wives and husbands are analyzed respectively, traditional substantive resources are found to have significant differences to the understanding of spousal conflict treatments. As to non-substantive resources, the lower the level of domestic life satisfaction, the more probable marital violence will happen. On the husband side of social control model, it is discovered that the rarer the husband deals with his neighbors, the more likely he will commit violence. Furthermore, applying theories to the interviews with abused women, we found that in the original family, structural factors such as ethnic background, history of spousal violence; interactive factors such as ill communication, discrepancy in money values and attitudes towards child raising; individual factors such as the husband with patriarchal ideology, are all contributive to spousal violence. Thus, it is shown that both substantive resources (i.e. money and wealth) and non-substantive resources (i.e. level of marriage satisfaction and gender role attitude) are significantly correlated related to conjugal power. Then, inspecting the impact cultural context has on spousal violence, the study divides the abused victims¡¦ reaction modes into patriarchism, ritualism, equalitarianism, and idealism, based on family values and resources on father/son axis and husband/wife axis. The results indicate that as one possesses more resources and stronger connections with the society, one receives greater conjugal power, and is more likely to suggest or demand a more equal authoritative structure in marriage. On top of that, the interviews with anti-spousal violence workers show that the third role offers different treatments depending on to what degree and on what aspect it intervenes in spousal conflicts. Only by integrating educational, social, police, judicial, and medical units can we provide women in Taiwan with an effective anti-spousal violence strategy.
8

Social And Economic Resources And Physical Abuse Against Women By Their Husbands

Hacioglu, Nilufer 01 December 2006 (has links) (PDF)
This study was undertaken with the objective of analysis of domestic violence against women by their husbands in terms of resource theory and its concepts. Domestic violence against women is a widespread social problem that can be observed in all societies. Studies on domestic violence in the past ten years were an important mechanism for bringing many women&rsquo / s experiences of discrimination and vulnerability to public attention. According to resource theory, major sets of resources like economic variables, prestige, force, and kinship are significant factors to explain domestic violence against women. These resources are indicators of power and the lack of ability of men to reach these resources or women&rsquo / s ability to get these resources can affect power relations in the family and cause conflict.
9

Förhandlingar om hushållsarbetet : En kvalitativ studie av förhandlingar i homosexuella parrelationer / Negotiations on housework : A qualitative study of negotiations in homosexual couple relationships

Saskin, Amela, Salman, Furat January 2022 (has links)
Previous research has shown that many couple relationships strive towards a moreequal relationship through negotiations within the household. However, this has beendictated when it comes to heterosexual relationships. The purpose of this study is to getan explanation of how male couples in relationships within a household navigate theirway through everyday life with an emphasis on household tasks and unpaid work. Thedata in the study has been gathered through a qualitative research method where nineinterviews have been conducted, four of which were couple interviews and five weresingle interviews. Our empirical data are analyzed on the basis of the theoreticalframework and concepts that we present in this study and should clarify howhomosexual men do or deviate from doing gender, with an emphasis on negotiationwithin the household. A definition of the concepts of sex and gender is made to clarify the differencebetween them. The theories used in this study are thoroughly explained in the studyand are as follows: Gender roles, gender-creating theory (doing gender theory), gendercontracts and gender order. Based on our interviewees, we can conclude that the vastmajority of homosexual men who was interviewed had conducted a formal negotiationwhether the negotiation took place before the relationship began or at the beginning.The majority of our interviewees also made gender by imitating the heterosexual scriptand creating categorization of male and female tasks to make the division morerecognizable and socially ingrained.
10

How union members’ position in the wage distribution affects income inequality in Germany : An empirical analysis of data from the German Socio-Economic Panel

Schönfeld, Philipp January 2023 (has links)
This thesis investigates the effect of union members’ position in the wage distribution on income inequality in Germany between 1998 and 2019. Specifically, data from the German Socio-Economic Panel are analyzed on two levels. Regression analyses on the sector-year and individual level show that if a large share of union members is relatively well positioned in the wage spectrum, the inequality-reducing union effect weakens.The purpose of this thesis is to provide evidence on within-union dynamics that might contribute to the continued union decline in many industrialized economies. This thesis fills a gap in the literature as most researchers focus either on how union strength affects income inequality or look at how union members’ wages affect their preferences on redistribution. By directly studying the effect of union members’ wages on inequality levels, this thesis additionally engages with the theoretical tradition of Power Resource Theory (PRT). Specifically, this analysis confirms that union strength and income inequality are negatively associated. However, it also provides evidence for a central critique of PRT, suggesting that working-class interest is heterogeneous and not homogeneous as PRT presumes.

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