Search results for "Intrinsic"
showing 10 items of 386 documents
2019
Previous research indicates that programmes employing Hellison’s Teaching Personal and Social Responsibility (TPSR) model in physical activity have had a positive impact on youth development by inc...
Geometry and analysis of Dirichlet forms
2012
Let $ \mathscr E $ be a regular, strongly local Dirichlet form on $L^2(X, m)$ and $d$ the associated intrinsic distance. Assume that the topology induced by $d$ coincides with the original topology on $ X$, and that $X$ is compact, satisfies a doubling property and supports a weak $(1, 2)$-Poincar\'e inequality. We first discuss the (non-)coincidence of the intrinsic length structure and the gradient structure. Under the further assumption that the Ricci curvature of $X$ is bounded from below in the sense of Lott-Sturm-Villani, the following are shown to be equivalent: (i) the heat flow of $\mathscr E$ gives the unique gradient flow of $\mathscr U_\infty$, (ii) $\mathscr E$ satisfies the Ne…
Rigid Hyperbranched Polycarbonate Polyols from CO2 and Cyclohexene-Based Epoxides
2017
Hyperbranched, multifunctional polycarbonate polyols based on CO2, cyclohexene oxide (CHO), and the “inimer” (initiator–monomer) (4-hydroxymethyl)cyclohexene oxide (HCHO) were prepared in one-pot syntheses. The related linear poly(hydroxymethyl cyclohexene carbonate) structures based on protected HCHO and postpolymerization deprotection were also synthesized as model compounds. The content of hydroxyl functionalities was adjustable for both linear and hyperbranched terpolymer systems. All CO2/epoxide polymerizations were catalyzed by the (R,R)-(salcy)-Co(III)Cl complex. The polycarbonates obtained were comprehensively investigated using various 1D and 2D NMR techniques, SEC, FT-IR, UV–vis s…
The Influence of Parents on Achievement Orientation and Motivation for Sport of Adolescent Athletes with and without Disabilities
2011
The purpose was three-fold. First, to analyze the psychometric properties of scales used. Second, to test the relationship among athletes’ perceptions of parents’ goal orientation and their own goal orientation and intrinsic motivation. Third, to compare athletes with and without disabilities with respect to the influence of parents on athletes’ achievement orientation and motivation for sport. Participants were 173 amateur athletes (80 with disabilities, 93 without disabilities). Structural equation models revealed that for the athletes with disabilities, task orientation and the perceptions of parents’ task orientation were related to athletes’ interestenjoyment and effort-importance. For…
The calculation of the number-average degree of polymerization starting from intrinsic viscosity and overall rate
1962
The relation between the intrinsic viscosity [η] and the number-average degree of polymerization Pn is a function of the molecular weight distribution of the polymer. In a polymer in which the termination of polymer radicals occurs partly by combination of two growing chains, this molecular weight distribution depends on number and extent of additional reactions such as chain transfer; i.e., it is variable. Therefore Pn of such polymers cannot be obtained from intrinsic viscosity measurements by means of an equation of the type [η] = KPna. A new method is proposed which allows the evaluation of Pn in these cases, without necessity of osmotic (or related) measurements or fractionation. The v…
The terminal hyperspace of homogeneous continua
2010
Abstract We investigate the structure of the collection of terminal subcontinua in homogeneous continua. The main result is a reduction of this structure to six specific types. Three of these types are of one-dimensional spaces, and examples representing these types are known. It is not known whether higher dimensional examples having non-trivial terminal subcontinua and representing the three remaining types exist.
Effectiveness of a creative physical education intervention on elementary school students’ leisure-time physical activity motivation and overall phys…
2018
This study investigated the effectiveness of a creative physical education (CPE) intervention on students’ perceptions of motivational climate in physical education (PE), leisure-time physical activity (PA) motivation, and overall PA. A sample of 382 fourth to sixth grade students ( Mage= 10.87[.93]) from two elementary schools were assigned to the CPE intervention ( n = 196; Mage= 10.84[.95]) and control ‘PE-as-usual’ ( n = 186; Mage= 10.90[.90]) groups. Students’ perceived task- and ego-supportive climate in PE, leisure-time PA motivation, and overall PA were measured before and after the one-year intervention. Analyses of covariance and path analyses were implemented to test the effectiv…
Affinity and efficacy of racemic, (+)-, and (−)-methacholine in muscarinic inhibition of [3H]-noradrenaline release
1985
The right postganglionic sympathetic nerves of rat isolated perfused hearts (previously loaded with [3H]-noradrenaline) were stimulated electrically with 10 trains of 10 pulses at 10 Hz. The inhibition by methacholine of stimulation-evoked [3H]-noradrenaline overflow into the perfusate (determined in the presence of corticosterone, desipramine, phentolamine, and propranolol) was taken as a measure for activation of presynaptic muscarinic receptors. The evoked [3H]-noradrenaline overflow was inhibited by (+)-, racemic, and (-)-methacholine in a reversible and concentration-dependent manner. The concentration causing 50% inhibition (IC50) was 0.1, 0.26, and 65 microM, respectively, resulting …
Common Fixed points for multivalued generalized contractions on partial metric spaces
2013
We establish some common fixed point results for multivalued mappings satisfying generalized contractive conditions on a complete partial metric space. The presented theorems extend some known results to partial metric spaces. We motivate our results by some given examples and an application for finding the solution of a functional equation arising in dynamic programming.