1,681 research outputs found

    Heroes and Victims:Fund Manager Sense-making, Self-legitimation and Storytelling

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    This paper explores how fund managers continue to do their job when on one level they know they cannot all be exceptional. They do this by telling stories, constructing satisfying narratives to explain to themselves, as well as others, why their investments work out and providing equally plausible reasons for when they underperform. Using the story typology of Gabriel (2000. Storytelling in Organizations: Facts, Fictions, and Fantasies. Oxford: Oxford University Press.) – epic, tragic, comic and romantic, we explore two sets of fund manager narratives. First, we analyse the transcripts of interviews with 50 equity fund managers in some of the world's largest investment houses. Second, we examine a similar number of published fund manager reports to their investors. In both cases, we show how storytelling is used by asset managers to make sense of what they do and justify their value to themselves as well their clients and employers. Similar processes are employed in both sets of narratives, one verbal and informal, the other written and formal. Our study serves to highlight how storytelling is an integral part of the work of the professional investor

    Gorenstein Projective Modules Over Triangular Matrix Rings

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    We study totally acyclic complexes of projective modules over triangular matrix rings and then use it to classify Gorenstein projective modules over such rings. We also use this classification to obtain some information concerning Cohen-Macaulay finite and virtually Gorenstein triangular matrix artin algebras.Comment: This paper is now accepted for publication in the Algebra Colloquiu

    Beating the Heat: The Use of Coral-Benefitting Bacteria for Heat-Stressed Anemones and Inspiring Future Biologists

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    The warming of ocean temperatures has caused mass coral-bleaching events characterized by the expulsion of vital algal symbionts from coral tissues. However, the possibility of algal reuptake and existence of bacteria that support coral-algal symbiosis are two avenues of potential restoration efforts. Using the sea anemone Exaiptasia diaphana as a model for corals, I tested whether the coral-benefitting bacterium Endozoicomonas montiporae could enhance algal uptake under ambient (27°C) and heat-stressed (32°C) conditions. I then turned acquired results into an article modeled after National Geographic Kids to introduce the experiment to younger ages. While temperature was a larger determinant of algal-uptake success, microscopic imaging showed heat-stressed anemones with the addition of E. montiporae to have visibly more algal density in their tissues than those without the bacterium. These results suggest that administration of E. montiporae to corals may assist their algal reuptake before they bleach completely. By making such work accessible to children and students of younger ages, an early interest in scientific inquiry and climate preservation can be inspired

    Biomechanical study of foot with hallux valgus deformity

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    This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University LondonBackground: Hallux valgus (HV) is one of the most common foot deformities. Considering the fact that 23% of adults develop such condition during their lifetime, understanding HV is badly needed. Plantar pressure technologies are used widely for determination of biomechanical changes in foot during walking. There are already published claims relating to the pressure distribution of HV condition. Association of HV to sole pressure widely presented as a means of identifying such condition. Methods: plantar pressure patterns can be linked to the deformity progression or existence, extracting some patterns out of force measurements can be beneficial in recognizing the patients with and without deformity. The dynamic changes of the forces that applied to the fore-foot in volunteers with and without HV when they walked at self-selected and fast speeds were examined. Furthermore, Markovian chain transfer matrices were used to obtain the transfer coefficient of the force among five metatarsals. Another method was to measure the lateral flexibility of the 1st metatarsal joint as an indication of HV deformity by Motion Capture cameras. Finally, two 3D feet models of HV and non-HV volunteers were made in Mimics software and then in FEA (finite element analysis) the stress distribution under the foot was validated with the experiments. Results: The higher forces were observed under the 2nd, 3rd and 1st metatarsal heads in both speeds but the results obtained were significantly different among groups and in fast speed and under 3rd and 1st metatarsals in self-selected speed. In this study the use of Markovian transfer matrices as a means of characterising the gait pattern is new and novel. It was intended that highest coefficients of the matrix would indicate the existence of HV, however studies showed that the biggest difference between HV and non HV patients was the scatter of the coefficients which shown to give very strong indication of the existence of HV. It was shown by kinematic studies and also it was found that the 1st metatarsal joint was significantly more flexible in HV patients compared to non–HV individuals. Finally FEA studies has shown that in the 3D feet models of both volunteers (with and without HV), the highest stress was under the heal area and then transfers towards fore-foot area. In patient with HV the higher force were seen under the 1st to 3rd metatarsal heads compare to non-HV individual and each model was validated its related experiments. Conclusion: it was observed that there was a significant variability of pressure distribution of the same individual from one trial to another indicating that getting consistent pressure pattern is an important hurdle to overcome in our studies, raised loading is observed on Metatarsal 2, 3 and 1 in HV patients and it was possible to give statistical significance to these findings. In this thesis, it was intended to obtain early diagnostics of HV condition and much work was put in this, however outcome was not conclusive. However it was possible to distinguish HV form non-HV volunteers from the scatter characteristics of the transfer pattern. Investigation of the 1st metatarsal joint laxity of non-HV and HV patients revealed that HV individuals were significantly higher compared to non–HV volunteers and this can be used as an indication of HV existence. Finally, the 3D models show that FEA is a reliable tool as the FEA study showed good correlation with the experimental results

    Opettajien ja rehtorien näkemykset nuorten käyttäytymisen käsittelemisestä koko koulun tasolla

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    Students’ challenging behavior is of significant concern to teachers and principals in Finland. Youth’s challenging behavior at school has negative effects on teachers’ classroom management, classroom climate and other students. To manage behavioral challenges at school, different school-wide approaches are used. The Multi-tiered system of support (MTSS) is one of these school-wide approaches. With three tiers, this model focused on the early detection of learning issues, early intervention and collaboration between school personnel. This thesis explores tier one (Universal behavioral support). This research provides a national picture of primary schools’ teachers’ and principals’ views in Finland with regards to addressing students’ behavior. This study answers three research questions: (1) How do teachers and principals compare with regards to their views on using school-wide components to address students’ behavior, (2) how do teachers and principals compare in their views of teachers’ responsibility to promote appropriate youth behavior and (3) how do teachers and principals compare with regards to their views on identifying and supporting students that are not responding to universal behavioral support. A sample of 88 teachers and 101 principals from comprehensive primary schools in Finland participated in this study. A series of independent t-test, ANOVA and Chi-square were utilized to determine if any statistically significant difference existed between teachers’ and principals’ views. It was discovered that no statistically significant difference existed between teachers’ and principals’ views except in two items of the survey: participants’ views differed about teachers’ responsibility to encourage students to behave as expected and about using Interventions as a behavioral support approach for students that are not responding to universal behavioral support
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