6,019 research outputs found
Motivation for sport spectating among the Taiwanese people
The purpose of this research was to examine the motivation for sport spectatorship among Taiwanese people. Seven sport spectating motivation factors that have been found in U.S. studies to be involved in sport spectatorship (self-esteem, entertainment, eustress, aesthetic, escape, group-affiliation, and family-togetherness) were examined. In addition, this study looked at the differences in spectating motivation between Taiwanese males and females. Surveys were administrated to 188 Taiwanese people. ANOVA and MANOVA analyses were conducted to examine spectator motivations and differences between males and females. The results indicated that some factors were more descriptive of the sport spectating motivation of Taiwanese people than others, and that there were differences between males and females
A new algorithm for fast generalized DFTs
We give an new arithmetic algorithm to compute the generalized Discrete
Fourier Transform (DFT) over finite groups . The new algorithm uses
operations to compute the generalized DFT over
finite groups of Lie type, including the linear, orthogonal, and symplectic
families and their variants, as well as all finite simple groups of Lie type.
Here is the exponent of matrix multiplication, so the exponent
is optimal if . Previously, "exponent one" algorithms
were known for supersolvable groups and the symmetric and alternating groups.
No exponent one algorithms were known (even under the assumption )
for families of linear groups of fixed dimension, and indeed the previous
best-known algorithm for had exponent despite being the focus
of significant effort. We unconditionally achieve exponent at most for
this group, and exponent one if . Our algorithm also yields an
improved exponent for computing the generalized DFT over general finite groups
, which beats the longstanding previous best upper bound, for any .
In particular, assuming , we achieve exponent , while the
previous best was
Deterministic Dense Coding and Faithful Teleportation with Multipartite Graph States
We proposed novel schemes to perform the deterministic dense coding and
faithful teleportation with multipartite graph states. We also find the
sufficient and necessary condition of a viable graph state for the proposed
scheme. That is, for the associated graph, the reduced adjacency matrix of the
Tanner-type subgraph between senders and receivers should be invertible.Comment: 10 pages, 1 figure;v2. discussions improve
Evaluation of antioxidant properties of some commercially available culinary and medicinal mushrooms from Taiwan
PhD ThesisA selection of commercially available mushrooms was obtained from Taiwan and
screened for phenolic contents and antioxidant activity in aqueous extracts using
various chemical measurements, namely scavenging of
2,2´-azinobis-(3-ethylbenzothiazoline-6-sulphonate) radical cation (TEAC),
Ferric reducing antioxidant power (FRAP), scavenging of
2,2-diphenyl-1-picrylhydrazyl radical (DPPH) and Folin-Ciocalteu reaction.
According to the antioxidant activity perceived, Cordyceps militaris, Pleurotus
citrinopileatus, Trametes versicolor, Hericium erinaceus, Ganoderma lucidum
and Auricularia auricula-judae were selected for in vitro digestion and cellular
antioxidant assay. After the in vitro digestion steps, the antioxidant activity in the
extracts of C. militaris had significantly decreased, (in TEAC 22% and 27 %
decrease, in hot- and cold-water extracts, respectively, in FRAP 42% and 21%
decrease, in hot- and cold-water extracts, respectively and in DPPH 78% and
21% decrease in hot- and cold-water extracts, respectively). The hot-water
extract of A. auricula-judae and cold-water extracts of H. erinaceus showed no
significant increase in TEAC assay after enzymatic digestion. There was a
significant increase in antioxidant activity in the other mushroom extracts after in
vitro enzymatic digestion. P. citrinopileatus exhibited the most potent antioxidant
activity in the TEAC (from 24 to 2 times higher and 10 to 1.5 times higher than
other mushrooms in hot- and cold-water extracts, respectively) and DPPH assays
(from 6.4 to 1.2 times higher and from 27 to 1.6 times higher than the other five
mushrooms in hot- and cold-water extracts, respectively) after digestion steps. T.
versicolor showed the most potent ferric reducing power after digestion steps
(from 29 to 5 times higher and 14 to 1.1 times higher than the other five
mushrooms in hot- and cold-water extracts, respectively). These results indicate
that most of the potential antioxidant compounds within the mushroom extracts
could be released after digestion steps, whereas the potential antioxidant
compounds of C. militaris might be degraded after digestion steps.
The results suggest that determination of antioxidant activity in selected
mushroom extracts may underestimate the real antioxidant activity that may be in
close contact with the intestinal lumen. Chemical estimates of potential
antioxidant compounds within the mushroom extracts may not accurately indicate the complex nature of the antioxidant activity of mushroom extracts
within cells. In this study, human hepatoma cell lines (Huh 7) were used to
measure cellular antioxidant activity using 2´, 7´- dichlorodihydrofluorescein
diacetate as a fluorescent probe. In artificially induced peroxyl radicals, among
the selected mushroom extracts tested, C. militaris and T. versicolor had the
highest cellular antioxidant activity, whereas H. erinaceus had the lowest. In
addition, in chemical assays (TEAC and DPPH), the antioxidant activity of T.
versicolor was less than that of P. citrinopileatus (64% and 67 % less in TEAC in
hot-and cold- water extracts, respectively and 70% and 82% less in DPPH in hot-
and cold-water extracts respectively). Even though the antioxidant activity of C.
militaris was decreased after digestion steps, C. militaris exhibited far stronger
cellular antioxidant activity than the other five mushrooms (p < 0.001). Based on
the different antioxidant assay methods, the antioxidant activity of each
antioxidant assay gave different antioxidant trends and antioxidant activity value
depending on the type of extract method (hot- and cold-water extracts). Using
cellular antioxidant assays may produce bioactivity results of the antioxidant
activity of mushroom extracts within cells. These findings could suggest that the
aqueous extracts from C. militaris and T. versicolor associated with health
benefits and other traditional remedies, at least in part, might be their potent
antioxidant activity
Neural Correlates of Causal Inferences and Semantic Priming in People with Williams Syndrome: An fMRI Study
This study aimed at examining the ability of causal inferences and semantic priming of people with Williams syndrome (WS). Previous studies pointed out that people with WS showed deviant sentence comprehension, given advantageous lexical semantics. This study investigated the impairment in connecting words in the semantic network by using neuroimaging techniques to reveal neurological deficits in the contextual integration of people with Williams syndrome. Four types of word pairs were presented: causal, categorical, associative, and functional. Behavioural results revealed that causal word pairs required heavier cognitive processing than functional word pairs. Distinct neural correlates of semantic priming confirmed atypical semantic linkage and possible cause of impairment of contextual integration in people with WS. The findings of normal behaviours and atypical neural correlates in people with WS provide evidence of atypical development resulted from early gene mutations
Factors Influencing Irregular Compaction Curves
The important influences of temperature on the compaction curves has been given little consideration, A.W. Johnson and J. K. Jallberg summarized primarily from a search of the literature that increasing the temperature leads to increase the maximum dry density 0£ the single peak curve. They explained that the water in the soil is more viscous at the lower temperature, reducing the workability of the soil, which induces a lower dry density. Some investigations which were not involved· in the compaction tests, have shown the temperature effect on some soil properties. From the results of confined and undrained compression test, M. A. Sherif and C. M. Burrous concluded that an increase in the temperature causes a decrease in the compressive strength of the soil. They reasoned that the absorbed water around the soil particles has a less rigid state as the temperature increases, thereby increasing the pore pressure and decreasing the effective stress. This conclusion, therefore, is in agreement with most investigation. although not all indicate exactly the same results. R. L. Plum and M. I. Esrig also postulate that the expansion of the electric double layer of soil particles will occur with the increase of temperature, thereby increasing the repulsive forces and decreasing the effective stress and shearing strength. Johnson and Jallberg also indicated in their summary that increasing the compaction effort by the modified compaction test for a single peak curve not only increases maximum dry unit weight and decreases optimum moisture content, but also decreases the percentage of air voids. In addition, they pointed out that very heavy clay soils may result in irregular compaction curves when tested under the standard compaction method and that increasing the compaction effort tends to decrease irregularity. However, this brief statement is based merely on limited data, and a systematic investigation is necessary. J. L. McRae and P. C. Rutledge observed that the optimum water contents at the same maximum dry densities for the kneading compaction on a single peak curve are about 1 percent higher than the standard impact-type compaction. It has been suspected that there is a difference on moisture-density curves between values obtained by reusing the same portion of soil over and over and values obtained by using a new batch of soil for each point on the compaction curve. It is noted that most of the prior investigations on1 examined the single peak compaction curve. To investigate the characteristics of irregularly shaped compaction curve is therefore necessary. This investigation, which was carried out at South Dakota State University, sponsored by the National Science Foundation, is the third stage of a series of investigations to examine the characteristics of irregularly shaped compaction curves. Because the change of temperature is an important factor in influencing the engineering properties of soil, the main objective of this research was to examine carefully the effect of temperature on the irregularly shaped compaction curve. The additional purposes were to investigate the influence of different compaction methods and the influence of soil sample preparation
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