2,977 research outputs found

### MATHEMATICAL MODELLING OF THE DYNAMIC RESPONSE, IN SIX DEGREES OF FREEDOM, OF SMALL VESSELS IN A SEAWAY

This thesis treats the motion of a small vessel described in six degrees of freedom. There are three are translation equations of motion and the other three are equations of angular motion. The aim is to develop a model with a sound mathematical base and use experimentation to find forces to aid the completion of the model, with the intention of use in an auto pilot, by the following means: 1) By solving the equations of motion for large movements, with given sea and wind conditions and also with given control forces and moments. 2) Deduce the forces and moments being applied from the sea etc., from the motion of the vessel. Thus to enable the auto pilot to deduce the required additional forces and the forces and moments applied by the water and wind and the control devices, such as the propeller and rudder. These two aims are achieved by analysing the transformation of axes using the standard Euler equations. However, as Euler's angles are ordered and therefore cannot cope with large angles which are present in the motion of a small vessel, another set of angles relating to axes and planes have been deduced. These are then rotated and the set of three measured angles are found in terms of the Euler angles. This is the main pan of original work in the thesis. The rest of the thesis is then based upon these set of measured angles and a general case mathematical model is deduced using them. This is proceeded by a functional analysis of the vessel's motion, environment and control action's. After that the general case model is theoretically validated by analysing the work done by ARJM Lloyd and showing how his work is a specific case of the general case. Experimental work performed on a small vessel is then used in the building of a mathematical model for the specific case of a small vessel, using a set of measured angles.Marinex Industries, Pool

### My Rescue In A Dark World

My Rescue In A Dark World A NARRATIVE By Barbara Diana Gilbert It is with Pride, Honor and Dignity that I salute you. You Gallant Man â€“ Strong Man - Man of High Esteem. You seemed to have been placed strategically in my life at every turn â€“ teaching, molding and preparing me for what was to be my assignment in this life. The roads were long and weary. There was danger on every side but I kept reaching for your guiding hand. You never let me fall; you constantly reached out for me â€“ making sure that I kept my stance. It seems almost like Divine Intervention that you positioned me on the learning end. You seemed destined to tutor me â€“ determined to teach me the ropes in a world where my own earthly father failed me. I was humbled to be your student. I know my earthly father is looking down from heaven with pride and admiration. I realized so many years later how much I missed his love, his teaching and his understanding to shape me into the woman I am today, however, you did it. I can never repay you; I can never thank you enough. Now I must take the baton and move forward blessing others in my wake â€“ telling them that they can do it; they can stand strong against all odds - that the sky is the limit for there is beauty and grace because there is life and hope. From the depths of Barbara Diana Gilbert Spoken Word Poet, Author of Spiritual Journey Of A Chil

### Mehr Bio-Frische gekauft

Im ersten Halbjahr 2007 haben die Verbraucher 20 % mehr fÃ¼r Bio-Frische ausgegeben als im entsprechenden Vorjahreszeitraum. Besonders die Vermarktung von Bio-Brot und Bio-KÃ¤se ist erfolgreich gewesen. Sie verkauften Ã¼ber ein Viertel mehr als im Vorjahr. Auch die Kategorien Fleisch, Wurst und GeflÃ¼gel, Frischobst, FrischgemÃ¼se und Eier erzielten Wachstumsraten zwischen 8,5 und 20 %. Nur der Kartoffelabsatz litt unter den Erntebedingungen in 2006 und ging um ein Viertel zurÃ¼ck

### My adult son, my adult daughter â€“ reflections of mothers of children with profound intellectual disabilities

Diana Aksamit, Barbara Marcinkowska, My adult son, my adult daughter â€“ reflec-tions of mothers of children with profound intellectual disabilities. Interdisciplinary Contexts of Special Pedagogy, no. 26, PoznaÅ„ 2019. Pp. 255â€“269. Adam Mickiewicz University Press. ISSN 2300-391X. e-ISSN 2658-283X. DOI: https://doi.org/10.14746/ikps.2019.26.12 Everyone has the right to participate in society, regardless of his or her current personal situation, level of psychosocial functioning or experience. No reason can justify marginalisation or exclusion of people from social life at any stage of their lives. The aim of the article is an attempt to characterise the adulthood of people with profound intellectual disabilities on the basis of subjective assessment of their mothers. The methodology applied was that of a qualitative research, where the main research technique was narrative interviews. The results of the research demonstrate that adulthood is the stage of life when people with profound intellectual disabilities and their caregivers require special support in mental, spiritual, social, societal and educational dimensions.Diana Aksamit, Barbara Marcinkowska, My adult son, my adult daughter â€“ reflec-tions of mothers of children with profound intellectual disabilities. Interdisciplinary Contexts of Special Pedagogy, no. 26, PoznaÅ„ 2019. Pp. 255â€“269. Adam Mickiewicz University Press. ISSN 2300-391X. e-ISSN 2658-283X. DOI: https://doi.org/10.14746/ikps.2019.26.12 Everyone has the right to participate in society, regardless of his or her current personal situation, level of psychosocial functioning or experience. No reason can justify marginalisation or exclusion of people from social life at any stage of their lives. The aim of the article is an attempt to characterise the adulthood of people with profound intellectual disabilities on the basis of subjective assessment of their mothers. The methodology applied was that of a qualitative research, where the main research technique was narrative interviews. The results of the research demonstrate that adulthood is the stage of life when people with profound intellectual disabilities and their caregivers require special support in mental, spiritual, social, societal and educational dimensions

### Shift, Suppress, Sever:Systemic Strategies for Dealing with Dark Leadership

Leaders with dark personalities are notorious for their destructive influences at work. Yet, it may not be enough for organizations to solely focus their interventions on leaders exhibiting dark personalities. Instead, we argue that systemic interventions that rely on levers at multiple organizational levels may be more fruitful in tackling destructive leadership. Specifically, we propose that interventions accounting for the individual characteristics of leaders and followers, as well as the organizational contexts in which destructive leadership is allowed to occur, are more likely to be effective and sustainable. By integrating literature from management, psychology, and educational sciences, we propose a framework that could serve as a guideline for organizational interventions and spur future research on how to mitigate destructive leadership processes. </p

### A Highly Efficient White Luminescent Zinc (II) Based Metallopolymer by RGB Approach

Three aryl-hydrazone O,N,O tridentate ligands with a different electron-withdrawing substituent were prepared. The introduction of a flexible charged chain in the ligands guaranteed solubility in many organic solvents and in water. The increasing withdrawing aptitude of the substituents red-shifted the emission in the correspondent metallopolymers. The metallated polymers were obtained by grafting ligand-zinc (II) coordination fragments onto commercial poly-(4-vinylpyridine). Metallopolymers thin films exhibited red, green and blue emission colors defined by Commission Internationale d'Eclairage (CIE) coordinates and medium to excellent photoluminescence (PL) quantum yields (PLQYs) comparable with other highly-performing active materials for Light-Emitting Diodes (LEDs). By grafting a suitable mix of the three different coordination pendants, an efficient single-component white emissive metallopolymer with CIE (0.30, 0.31) was prepared. Thanks to the charged moiety, the polymers resulted miscible with an ionic liquid. The addition produced homogeneous polymeric layers with unaltered PL performances, potentially employable in Light-emitting Electrochemical Cells (LECs)

### Exploring copepod distribution patterns at three nested spatial scales in a spring system. Habitat partitioning and potential for hydrological bioindication

In groundwater-fed springs, habitat characteristics are primarily determined by a complex combination of geomorphic features and physico-chemical parameters, while species assemblages are even more intricate. Springs host species either inhabiting the spring mouth, or colonizing spring habitats from the surface or from the aquifers which feed the springs. Groundwater species living in springs have been claimed as good candidates for identifying dual aquifer flowpaths or changes in groundwater pathways before reaching the spring outlets. However, the reliability of spring species as hydrological biotracers has not been widely investigated so far. Our study was aimed at analysing a large karstic spring system at three nested spatial scales in order: i) to assess, at whole spring system scale, the presence of a groundwater divide separating two aquifers feeding two spring units within a single spring system, by combining isotope analyses, physico-chemistry, and copepod distribution patterns; ii) to test, at vertical spring system scale, the effectiveness of copepods in discriminating surface and subsurface habitat patches within the complex mosaic spring environment; iii) to explore, at local spring unit level, the relative role of hydrochemistry and sediment texture as describers of copepod distribution among microhabitats. The results obtained demonstrated the presence of a hierarchical spatial structure, interestingly reflected in significant differences in assemblage compositions. Copepod assemblages differed between the two contiguous spring units, which were clearly characterized by their hydrochemistry and by significant differences in the groundwater flowpaths and recharge areas, as derived by the isotope analyses. The biological results suggested that stygobiotic species seem to be related to the origin of groundwater, suggesting their potential role as hydrological biotracers. At vertical scale, assemblage composition in surface and subsurface habitats was significantly different, both between spring units and among microhabitats, supporting strong habitat preferences of copepod species. At the smaller local scale, the response to habitat patchiness of subsurface copepod assemblages resulted in distribution patterns primarily defined by sediment texture, while the sensitivity to differences in hydrochemistry was negligible
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