نتایج جستجو برای: tailed drongo and lesser racket
تعداد نتایج: 16830951 فیلتر نتایج به سال:
OBJECTIVE Recent studies have reported that skilled tennis players are likely to use proximal body information for anticipating the direction of their opponent's forehand shot. However, in these studies, the visual stimuli did not include visual information about the ball. Skilled players may have used proximal information owing to the lack of distal information. To address this issue, we devel...
Conservation agencies are often faced with the difficult task of prioritizing what recovery actions receive support. With the number of species under threat of decline growing globally, research that informs conservation priorities is greatly needed. The relative vulnerability of cryptic or nomadic species is often uncertain, because populations are difficult to monitor and local populations of...
Linkage of echolocation call production with contraction of flight muscles has been suggested to reduce the energetic cost of flight with echolocation, such that the overall cost is approximately equal to that of flight alone. However, the pattern of call production with limb movement in terrestrially agile bats has never been investigated. We used synchronised high-speed video and audio record...
Volatility spillover effect in international financial markets is one of the principal issues that widely attract academic and industrial scholars’ attention. Through constructing a binary GARCH-BEKK model, this study empirically tests the volatility effects among stock market, gold market, WTI crude oil futures market and spot market, and concludes that there is bidirectional volatility spillo...
The grey theory is mainly uncertainty directed against the systematic model and fit for incomplete information. This paper adopts the grey prediction methods, GM(1,1) and GM(1,1|optimal α), to investigate the return and volatility of major index futures among American and Eurasian markets. The grey relational theory and GM(1,N) model are further used to observe the volatility spillover effect a...
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