1,382 research outputs found
Abstract book of the 31. European Sport Management Conference (EASM) from 12.-15.09.2022 in Belfast. S. 42-43
No full textHerold E, Schwarzbauer T, Schnitzer M, eds. Female Volunteering and Voluntary Leadership in Community Sports Organizations.; 2023
Text der Gesänge zu der Zigeunerbaron : Operette in 3 Akten. Nach einer Grundidee M. Jókai's
No full textvon J. Schnitzer. Musik von Johann Straus
Effects of lianas and Hurricane Wilma on tree damage in the Yucatan Peninsula, Mexico
No full textClimate change may increase the intensity of hurricanes (Emanuel 1987, 2003), and thus the size of disturbance in tropical forests. As a consequence, disturbance-specialist plants, such as lianas, may increase in abundance there (Phillips & Gentry 1994). Putz (1984) hypothesized that lianas create larger treefall gaps by connecting trees together and pulling down multiple trees during storms. This positive-feedback cycle may increase the prevalence of lianas in disturbed tropical forests (Schnitzer & Bongers 2002, Schnitzer & Carson 2001). Alternatively, Putz (1984) proposed that lianas tie and stabilize canopies together, resulting in less disturbance. Forest age may determine the role of lianas during disturbance because liana abundance and composition vary through secondary succession (De Walt et al. 2000, Schnitzer et al. 2000). To test the two hypotheses of Putz (1984), we evaluated the effect of liana cutting between forests of different successional ages on tree damage by hurricane Wilma
Abstract book of the XIV Annual Conference of the European Sport Economic Association (ESEA)
No full textHerold E, Wicker P, Schwarzbauer T, Schnitzer M, eds. The Sport Volunteering Irony: Correlates of Financial Compensation.; 2023
2024 Jordan Schnitzer First Book Publication Awards
No full textThe Association for Jewish Studies is pleased to again offer its Jordan Schnitzer First Book Publication Awards. This program is designed for current AJS member authors who already have secured publishing contracts but who require subventions to ensure publication of their first books. The AJS will grant awards of $5,000 each, payable directly to the press on behalf of the author. A multidisciplinary committee of scholars will evaluate applications. In deciding how to allocate these funds, t..
Compost maturity: extractable lipids as indicators of organic matter stability
No full textAn organic matter stability test was developed for assessing compost maturity. Lipids extracted sequentially with diethyl ether (DEE) and chloroform (CHCl3) from four composted manure mixes and four commercially produced composts were used to set and test the limits of gravimetrically based indices of maturity. Limits of 0.25 for CHCl3-extractable/total lipid ratios constitute acceptable limits for mature composts. The proposed test for compost maturity is scientifically-sound, relatively inexpensive and universally applicable, and can be performed by workers with low technical skills
The sport volunteering irony: Correlates of the financial compensation of volunteers in non-profit sport clubs
No full textWicker P, Herold E, Wicho T, Schnitzer M. The sport volunteering irony: Correlates of the financial compensation of volunteers in non-profit sport clubs. Sport, Business and Management: An International Journal. 2025;15(4):358-377
Compost maturity: chemical characteristics of extractable lipids
No full textChemical changes in extractable lipids from four mixtures of farmyard manures were investigated during the composting process. Lipid extractions with diethyl ether (DEE) and chloroform (CHCl3) were sequentially performed on samples collected at seven different times during composting. Amounts of DEE-extractable lipids decreased continuously during composting, while CHCl3-extractable lipids remained relatively constant. 13C NMR and mass spectrometric data indicated that the lipids became chemically more homogeneous during composting and that biologically resistant molecules predominated at the end of compostin
Attention during sequences of saccades along marked and memorized paths
No full textAbstractNatural scenes are explored by combinations of saccadic eye movements and shifts of attention. The mechanisms that coordinate attention and saccades during ordinary viewing are not well understood because studies linking saccades and attention have focused mainly on single saccades made in isolation. This study used an orientation discrimination task to examine attention during sequences of saccades made through an array of targets and distractors. Perceptual measures showed that attention was distributed along saccadic paths when the paths were marked by color cues. When paths were followed from memory, attention rarely spread beyond the goal of the upcoming saccade. These different distributions of attention suggest the involvement of separate processes of attentional control during saccadic planning, one triggered by top-down selection of the saccadic target, and the other by activation linked to visual mechanisms not tied directly to saccadic planning. The concurrent activity of both processes extends the effective attentional field without compromising the accuracy, precision, or timing of saccades
The relationship between spatial pooling and attention in saccadic and perceptual tasks
No full textAbstractSaccades aimed at spatially extended targets land reliably at central locations determined by pooling information across the target shape [Melcher, D., & Kowler, E. (1999). Shape, surfaces and saccades. Vision Research, 39, 2929–2946; Vishwanath, D., & Kowler, E. (2003). Localization of shapes: Eye movements and perception compared. Vision Research, 43, 1637–1653]. Previous findings of saccadic errors when attempting to look at a target in the midst of distractors encouraged suggestions that pooling occurs indiscriminately, with little or no influence of a selective filter to eliminate the influence of nearby distractors. To determine the effectiveness of filtering, saccadic localization was studied for saccades made to a set of target elements (discs) interleaved with an equivalent set of distractors of a different color. With such interleaved elements, selection and spatial pooling are constrained to occur over the same spatial region. The results showed that filtering was effective and saccadic landing position was determined mainly by the target elements. Concurrent perceptual judgments made about the same stimuli (estimating the mean size of either target or distractor discs) showed better performance for the target discs than distractors, confirming that perceptual attention was allocated to the set of target elements. These results: (1) support the role of attention in setting the input to the spatial pooling process that guides saccades to spatially extended targets, and (2) show that perceptual judgments of mean value, often thought to impose modest attentional demands, are not immune to the constraints of this pre-saccadic filter
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