1,009 research outputs found

    Investigation of the Ashenden Proposal for redesigning teachers\u27 work: The case of secondary teacher librarians

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    This thesis documents the implications of the Ashenden proposal for the work of teacher librarians in particular, and teachers in general. The participants are eight practising teacher librarians ‘in charge\u27, from Perth metropolitan secondary schools. Data for this qualitative study was collected through semi-structured interviews and analysed using the constant comparative method. The study identifies the main strength of Ashenden\u27s proposal as his orientation\ towards the professional ideology of teachers which implies trust in the professional intentions, knowledge and discretionary judgements of teachers. The study also finds that the Ashenden proposal is incompatible with the work of teaching as a profession. Points of departure arise from: Ashenden\u27s view of the industrial relations process; the productivity requirement to work within existing levels of resourcing; his industrial management approach which tends to characterise teaching as a labour form of work; and his limited view of the problems associated with teachers\u27 work. This thesis proposes two alternative courses of action, based on an integration of the field data, the literature, and the identified strengths of the Ashenden proposal. One proposal is intended for all teachers. The other is intended for teacher librarians, who form the specific focus of the study

    Organic compounds in the environment: soil sorption of acidic pesticides: modeling pH effects.

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    A model of acidic pesticide sorption in soils was developed from theoretical modeling and experimental data, which initially considered a combination of a strongly acidic pesticide and a variable-charge soil with high clay content. Contribution of 2,4-D [(2,4-dichlorophenoxy) acetic acid] anionic-form sorption was small when compared with molecular sorption. Dissociation of 2,4-D was not sufficient to explain the variation in Kd as a function of pH. Accessibility of soil organic functional groups able to interact with the pesticide (conformational changes) as a function of organic matter dissociation was proposed to explain the observed differences in sorption. Experimental 2,4-D sorption data and Koc values from literature for flumetsulam [N-(2,6-difluorophenyl)-5-methyl [1,2,4] triazolo [1,5-a] pyrimidine-2-sulfonamide] and sulfentrazon

    The Truth in Compatibilism and the truth of Libertarianism

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    The paper offers the outlines of a response to the often-made suggestion is that it is impossible to see how indeterminism could possibly provide us with anything that we might want in the way of freedom, anything that could really amount to control, as opposed merely to an openness in the flow of reality that would constitute merely the injection of chance, or randomness, into the unfolding of the processes which underlie our activity. It is suggested that the best first move for the libertarian is to make a number of important concessions to the compatibilist. It should be conceded, in particular, that certain sorts of alternative possibilities are neither truly available to real, worldly agents, nor required in order that those agents should act freely; and it should be admitted also that it is the compatibilist who tends to give the most plausible sorts of analyses of many of the ‘can’ and ‘could have’ statements which seem to need to be assertible of those agents we regard as free. But these concessions do not bring compatibilism itself in their wake. The most promising version of libertarianism, it is argued, should be based on the idea that agency itself (and not merely some special instances of it which we might designate with the honorific appellation ‘free’) is inconsistent with determinism. This version of libertarianism, it is claimed, can avoid the objection that indeterminism is as difficult to square with true agential control as determinism can sometimes seem to be

    On the dynamics of vortex modes within magnetic islands

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    Recent work investigating the interaction of magnetic islands with micro-turbulence has uncovered the striking observation of large scale vortex modes forming within the island structure [W.A. Hornsby {\it et al.}, Phys. Plasmas {\bf 17} 092301 (2010)]. These electrostatic vortices are found to be the size of the island and are oscillatory. It is this oscillatory behaviour and the presence of turbulence that leads us to believe that the dynamics are related to the Geodesic Acoustic Mode (GAM), and it is this link that is investigated in this paper. Here we derive an equation for the GAM in the MHD limit, in the presence of a magnetic island modified three-dimensional axisymmetric geometry. The eigenvalues and eigenfunctions are calculated numerically and then utilised to analyse the dynamics of oscillatory large-scale electrostatic potential structures seen in both linear and non-linear gyro-kinetic simulations

    PREDICTING OFFENSIVE PERFORMANCE IN COLLEGIATE BASEBALL PLAYERS USING ISOMETRIC FORCE PRODUCTION CHARACTERISTICS

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    This study assessed the predictability of offensive performance in collegiate baseball players using isometric force production variables. Baseball players (n=31) performed isometric mid-thigh pull strength testing to assess kinetic variables from force plate data. Bivariate correlations were calculated between kinetic data and baseball performance variables (batting avg, slugging % (SLG), doubles and HRs). Linear regression was used to calculate multiple correlations and to generate prediction equations with kinetic data and offensive performance. Moderate to large statistically significant correlations were observed between HRs and SLG with all kinetic variables. A moderate correlation is seen between doubles and rate of force development (RFD). Resistance exercises that will increase the hitter’s ability to develop large forces as well as increase RFD may be necessary for better performance

    Toroidal momentum transport in a tokamak caused by symmetry breaking parallel derivatives

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    A new mechanism for toroidal momentum transport in a tokamak is investigated using the gyro-kinetic model. First, an analytic model is developed through the use of the ballooning transform. The terms that generate the momentum transport are then connected with the poloidal derivative of the ballooning envelope, which are one order smaller in the normalised Larmor radius, compared with the derivative of the eikonal. The mechanism, therefore, does not introduce an inhomogeneity in the radial direction, in contrast with the effect of profile shearing. Numerical simulations of the linear ion temperature gradient mode with adiabatic electrons, retaining the finite rho* effects in the ExB velocity, the drift, and the gyro-average, are presented. The momentum flux is found to be linear in the normalised Larmor radius (\rho*) but is, nevertheless, generating a sizeable counter-current rotation. The total momentum flux scales linear with the aspect ratio of the considered magnetic surface, and increases with increasing magnetic shear, safety factor, and density and temperature gradients

    Global gyrokinetic simulations of intrinsic rotation in ASDEX Upgrade Ohmic L-mode plasmas

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    Non-linear, radially global, turbulence simulations of ASDEX Upgrade (AUG) plasmas are performed and the nonlinear generated intrinsic flow shows agreement with the intrinsic flow gradients measured in the core of Ohmic L-mode plasmas at nominal parameters. Simulations utilising the kinetic electron model show hollow intrinsic flow profiles as seen in a predominant number of experiments performed at similar plasma parameters. In addition, significantly larger flow gradients are seen than in a previous flux-tube analysis (Hornsby et al {\it Nucl. Fusion} (2017)). Adiabatic electron model simulations can show a flow profile with opposing sign in the gradient with respect to a kinetic electron simulation, implying a reversal in the sign of the residual stress due to kinetic electrons. The shaping of the intrinsic flow is strongly determined by the density gradient profile. The sensitivity of the residual stress to variations in density profile curvature is calculated and seen to be significantly stronger than to neoclassical flows (Hornsby et al {\it Nucl. Fusion} (2017)). This variation is strong enough on its own to explain the large variations in the intrinsic flow gradients seen in some AUG experiments. Analysis of the symmetry breaking properties of the turbulence shows that profile shearing is the dominant mechanism in producing a finite parallel wave-number, with turbulence gradient effects contributing a smaller portion of the parallel wave-vector

    Entrepreneurship Everywhere: Across Campus, Across Communities, and Across Borders

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    This paper introduces the theme of this special issue related to “Entrepreneurship Everywhere: Across Campus, Across Communities, and Across Borders.” We explore three critical points as we set up the accepted articles for the special issue. First, if we are everywhere are we anywhere? Second, we focus on the importance of collaboration. Third, we discuss the importance of strategically planning on how your efforts intervene or integrate into the wider ecosystem. Entrepreneurship is everywhere. A search of the term “entrepreneurship” on Google yields 132 million results. By comparison a search on “strategic management” yields a mere 17.2 million results. Despite the highly unscientific nature of this comparison, the results shine the light on the tremendous interest and growth in entrepreneurship and entrepreneurs. The job creation potential of small businesses and entrepreneurial firms has captured the attention of politicians from across the globe and the ideological spectrum, who frequently hale the benefits of entrepreneurial activity. Citing work by Tornatzky and Rideout (2014), the Kauffman Foundation’s (2015) “State of Entrepreneurship” address indicates that entrepreneurship programs, both curricular and noncurricular, are the fastest-growing programs on college campuses. While many large corporations are villainized, entrepreneurs and small businesses are generally held in high regard and lionized in many instances. Further, interest and growth in the topic of entrepreneurship is unbound by geography or academic discipline. Across many university campuses it is common to find multiple programs and centers dedicated to fostering and growing entrepreneurship. Programs as diverse as engineering, music, pharmacy, agriculture, art, and law are all focusing on helping their students to both engage in entrepreneurial thinking and activity. While the business school remains a key component of the entrepreneurial ecosystem on campuses across the globe, the diversity of programs has grown dramatically. This special issue seeks to highlight this expansive growth by including a diverse set of articles that point to the explosive growth of entrepreneurship and entrepreneurship programing around the world, within our communities and on college campuses. We will briefly preview each of the contributions below, but first we highlight three critical and related questions of the growth of entrepreneurship. First, if entrepreneurship is everywhere, is it truly anywhere? Second, as entrepreneurship continues to be an emphasis across levels of federal, state, and local government and as diverse university entities continue to seek to spark entrepreneurial activities, how is this best managed? Third, how is the entrepreneurial ecosystem affected by the tremendous investment and enhanced focus of universities and government entities in trying to engineer entrepreneurship
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