I examensarbetet analyseras läromedlet Wings (2003, 2005) ur ett genusperspektiv. De frågeställningar som ligger till grund för undersökningen är hur många gånger kvinnor/flickor och män/pojkar förekommer i texter och övningar, vem som har en aktiv respektive passiv roll, samt vilka yrken, handlingar och attribut som är kopplade till personerna. Läromedlet Wings för år 7-9 har gåtts igenom och varje gång texter eller övningar har handlat om kvinnor/flickor och/eller män/pojkar har detta antecknats. Den person som har en framträdande roll, en aktiv roll, i en text eller övning har benämnts som ”huvudroll” i undersökningen. För ”huvudrollerna” har antecknats vilka yrken de har eller hur de presenteras för läsaren. Handlingar och attribut som är kopplade till ”huvudrollerna” har även antecknats. En analys görs också av foton på ”huvudrollerna” Kerrie och David och deras familj, släkt och vänner som finns i Base Book 7 (2003). Undersökningen visar att Wings i stort förmedlar ett sunt genusperspektiv, där kvinnor/flickor och män/pojkar får lika stort utrymme och där både kvinnor/flickor och män/pojkar presenteras i sammanhang som visar på könens lika möjligheter. Samtidigt finns skildringar som förmedlar traditionella könsroller och negativa förväntningar på kvinnor/flickor och män/pojkar. Examensarbetet visar på vilka styrkor och svagheter läromedlet har ur ett genusperspektiv, samt hur man som lärare kan använda dessa i arbetet kring genus med eleverna.

No description available.

Thesis (M.S.M.E.)--University of Delaware, 2009. / Principal faculty advisor: Xinyan Deng, Dept. of Mechanical Engineering. Includes bibliographical references.

This two-part study addressed the foraging flight performance of bumble bees (Bombus spp.) burdened with artificially induced wing wear between fireweed flowers (Chameriion angustifolium). The first part of the study examiend the effects of wing wear and interflower distance on travel time. The second part of the study addressed the effect of mean wing clipping and wing asymmetry on flight biomechanics (flight distance, velocity, acceleration, and deceleration) and flight biomechanics (flight distance, velocity, acceleration, and deceleration) and flight path (displacement from a bee-line). Bees with wing wear flew faster between flowers spaced more sparsely, possibly compromising accuracy in choosing rewarding flowers. Flight biomechanics were relatively unchanged by wing wear. Bees with low wing loss and little asymmetry increased slightly in acceleration and deceleration. Bees with high mean wing loss and high asymmetry flew further and higher between flowers compared to control bees. When the high mean wing loss was symmetrical, bees flew as far and as high as control bees. The results of these studies suggest the resilience of bumble bees to induced wing wear, with little change in flight performance. / 64 leaves ; 29 cm.

No description available.

Current research in experimental and computational fluid dynamics is focused in the area of flow control. Flow control devices are usually classified as either passive or active. Plasma actuators are active flow control devices that require input from an external power source. Current efforts have modeled the effects of plasma actuators as a body force near the electrode. The research presented herein focuses on modeling the fluid-plasma interaction seen in dielectric barrier discharge plasma actuators as a body force vector in the region above the embedded electrode using computational fluid dynamics (CFD). This body force is modeled as the product of the gradient of the potential due to the electric field and the net charge density. In a passive flow control study, two-dimensional simulations using CFD are done with a smooth and bumpy Eppler 398 airfoil with laminar, transition, and turbulent models in an effort to improve the understanding of the flow over bumpy airfoils and to quantify the advantages or disadvantages of the bumps.

An experimental investigation on active aeroelastic aircraft structures with bending-torsion coupling properties is presented. Two techniques for vibration and flutter alleviation are studied and tested. The passive approach is based on the use of carbon composite spars with misaligned fibres. The second technique involves an active spar with a multi-cross section embedded with PZT actuators. A wing was designed and manufactured for testing in a wind tunnel and subsequently implemented on a demonstrator platform for flight testing. Results show that a carefully designed misalignment of the fibres can lead to significant performance increase. The active system based on PZT actuators with a linear controller exhibits significant improvements in aeroelastic performance compared to the passive system. The research findings lead to the conclusion that significant vibration reduction and flutter envelope extension can be achieved using the proposed strategies.

An inverted wing with various endplate configurations was investigated at two different angles of incidence. A moving ground was designed and constructed for use in the UNSW T1 wind tunnel. The test cases were investigated in ground effect using the moving ground. Measurements and observations were obtained using laser sheet flow visualisation and laser doppler anemometry. Computational fluid dynamics models of the test cases were run to gain further understanding of the flow field generated when using inverted wings with endplates. The computational fluid dynamics models correlated well to the experimental results.

Thesis (M.S. in Aeronautical Engineering)--Naval Postgraduate School, September 2002. / Thesis advisor(s): Kevin D. Jones, Max F. Platzer. Includes bibliographical references (p. 61). Also available online.

Thesis (M.S.)--Oregon State University, 2009. / Printout. Includes bibliographical references (leaves 39-40). Also available on the World Wide Web.