Syftet med denna studie är att undersöka grundskollärares syfte med undervisningen av begreppet friktion. Beprövade erfarenheter och tidigare forskning tyder på att lärarens syften med undervisningen kan kopplas till Roberts emfaser. Därmed är examensarbetets frågeställning: Vad har läraren för syfte med undervisningen av begreppet friktion? Vårt examensarbete analyseras utifrån Roberts emfaser. Detta innebär att lärarnas uttalanden i de semistrukturerade intervjuerna kategoriseras i Roberts olika emfaser. Studien är gjord på nio grundskollärare med behörighet inom de naturorienterande ämnena och med olika erfarenheter inom läraryrket. Resultatet i studien visar att lärare har minst ett syfte med undervisningen av begreppet friktion. Vidare visar resultatet att grundskollärarna behöver anpassa undervisningen utifrån faktorer som kan påverka lärarens syfte. Studiens slutsats visar att majoriteten av lärare syftar till att undervisningen av begreppet friktion skall ge eleverna en förståelse av begreppets innebörd samt ge eleven möjlighet att lära sig om den naturvetenskapliga kunskapen.

The forest avian community of the Ray Roberts Greenbelt (Denton Co., Texas) was characterized for two years using point count station sampling, from fall 1998 to summer 2000. Richness data for both breeding seasons were correlated with two-spatial metrics: width of the riparian forest and distance to the nearest edge. There were significant correlations between forest interior species richness and both spatial metrics, for both breeding seasons. Based on these data, a minimum riparian forest width threshold of 400-meters is suggested to provide habitat for forest interior species, which have lost considerable habitat through forest fragmentation. Partners in Flight breeding bird priority concern scores were used to create a habitat priority index for the Trinity River bottomland hardwood forest system

A population survey was conducted from April through September 2002 on mosquito species occurring on the Ray Roberts Greenbelt, a riparian corridor used for public recreation on the Elm Fork of the Trinity River, in Denton County, Texas. ArcGIS software was used to set up a stratified random sampling design based on habitat parameters. Multivariate analyses of sampling data and climatic variables were used to describe spatial and temporal patterns of mosquito species. A total of 33 species were collected during this study belonging to the following genera: Aedes, Anopheles, Coquillettidia, Culex, Mansonia, Ochlerotatus, Orthopodomyia, Psorophora, Toxorhynchites, and Uranotaenia. Seasonal distributions of the dominant species revealed population fluctuations. Aedes vexans was the primary species collected in April and May, occurring in low numbers throughout the rest of the sampling period. Psorophora columbiae reached its highest population density in June, with a smaller peak occurring in late July. Present from May through the end of September, Culex erraticus was the most abundant species collected with major peaks in mid-June and the end of July. Abundance of Culex salinarius followed the same general trend as that for Cx. erraticus, but with smaller numbers. The specimens were tested for a variety of arboviruses by the Texas Department of Health. One pool of Cx. erraticus and Cx. salinarius, collected in August 2002, tested positive for West Nile virus. Variables that were important factors for determining dominant species abundance were temperature, wind speed, rain accumulation occurring one-week and two-weeks prior to sampling, number of day since last rain event, dew point, and average canopy coverage.

White-tailed deer (Odocoileus virginianus) (N=15) movements were determined with use of radio telemetry techniques to determine the utilization of corridor habitat on the Lake Ray Roberts Greenbelt Corridor (RRGC) in north central Texas. Home ranges were calculated using three estimation types. Male white-tailed deer tend to have home ranges twice that of female home ranges. Seasonal home ranges were largest during spring (Feb. - April) and fall (Aug. - Oct.) seasons. Males had greater seasonal variation in utilization than females. No statistically significant difference (p=0.24) between white-tailed deer locations when the RRGC experiences heavy human traffic compared to days when there is light human traffic. Linearity indices indicated home ranges less linear than expected (LI = 3.02). The RRGC should be maintained at its current status to provide a variety of vegetational types and protective cover for white-tailed deer and other wildlife of Denton County.

Assessing the impact of climate variability on water resources is one of the difficult tasks in planning the future growth of North-Central Texas. This study defined twelve extreme climate scenarios. Data from each scenario was input to a hydrological model (HEC-HMS) to calculate watershed runoff to Lake Ray Roberts. Model parameters are determined using Geographic Information System (GIS). The water balance was calculated for current and future water demand and resulting change in the volume and level of this reservoir. The results indicate certain climate scenarios decrease in volume. Thus, local governments should plan alternative water management strategies during droughts.

Habitat Evaluation Procedure data gathered at Ray Roberts Lake in 1989 and 1990 were analysed for temporal variability, observer variability and relationships between Habitat Units (HUs) and species density/diversity. observer variability within a group was analysed by cluster analysis and bootstrapping. Five out of 36 sites showed significant differences in Habitat Suitability Index (HSI) values within the group. A nonparametric Mann-Whitney test was used to analyze temporal variability. One of 6 sites showed a significant difference in HSI values between years. Using Spearman's Rank Correlation Coefficient, a correlation was found between indicator species density and HUs. No significant correlation was indicated between species diversity and HUs.

This thesis analyzes the political career of Oran M. Roberts during the critical period from 1850 to 1873. Through a reassessment of Roberts's extensive personal papers in the context of modern historical scholarship, the author explains how Roberts's political philosophy reflected the biases and prejudices typical of his era, as well as his own material interests and ambitions. Topic areas covered include Roberts's position on the Compromise of 1850, his constitutional philosophy, his involvement in the secession movement in Texas (including his service as president of the state secession convention), his military career during the Civil War, his participation in Presidential Reconstruction, his views on Congressional Reconstruction, and his role in the process of "redemption" in Texas.

The Germans of Geilenkirchen-Hengesburg region of Germany were convinced by relative and friend, Father Peter Leonard Thevis, of the Archdiocese of New Orleans, to emigrate to the United States for a number of reasons: political, religious, and economic. After establishing themselves on land previously used for grazing cattle, the Germans soon discovered rice could easily be cultivated in large amounts. Along with their success as rice farmers in Roberts Cove, Louisiana, these Germans soon involved themselves in politics and engaged one another and the surrounding community in numerous court cases. These court cases, overlooked by previous historians, demonstrate that the Germans of Roberts Cove had begun to assimilate, prior to World War I and the passage of anti-German legislation.

The aim of this thesis is description and understanding of private equity industry as a part of alternative asset class. In the first part, we describe the basic concepts of private equity industry and characteristics of individual subjects present in this sector. Analysis of the industry and basic comparison of private equity in Europe and United States is the theme of the second part of this paper. The base of knowledge created in the previous parts supports the analysis of buyouts and their value creation strategies. On the example of Kohlberg Kravis Roberts, pre-eminent private equity firm, we show how private equity works in practice and what current trends in the industry are. In the end, we estimate the subjective value of one unit of ownership in KKR and list that risks could affect the company and the industry.

In this thesis, I explore the textual strategy of feminist revision employed by contemporary women writers. After investigating Jean Rhys’s Wide Sargasso Sea as a prototype of feminist revision, I focus specifically on Angela Carter’s “The Bloody Chamber” as a revision of Charles Perrault’s “Bluebeard,” Michèle Roberts’s The Book of Mrs Noah as a revision of the Old Testament Flood narrative, Margaret Atwood’s The Penelopiad as a revision of Homer’s Odyssey and the Troy narratives, and Ursula K. Le Guin’s Lavinia as a revision of Vergil’s Aeneid. Through investigating the historical and literary contexts of each revisioned text, I identify the critical focus of the revision and analyse the textual effect produced by the revision. In each case, the feminist revision exposes the underlying ideological assumptions of the source text. By rewriting the canonical narrative from an alternative perspective, each revision extends beyond the source text, altering meaning and reinterpreting key symbols for feminist ends.