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Journal of Agricultural and Resource Economics, 2011 The objective of this study is to evaluate the risk associated with major agricultural commodity yields in the United States. We are particularly concerned with the nonstationary nature of the yield distribution, which arises primarily as a result of ...
Ying Zhu +2 more
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A comparison of time-aware ranking methods [PDF]
Proceedings of the 34th international ACM SIGIR conference on Research and development in Information Retrieval, 2011 When searching a temporal document collection, e.g., news archives or blogs, the time dimension must be explicitly incorporated into a retrieval model in order to improve relevance ranking. Previous work has followed one of two main approaches: 1) a mixture model linearly combining textual similarity and temporal similarity, or 2) a probabilistic model
Nattiya Kanhabua, Kjetil Nørvåg
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Oscillatory behavior of higher-order neutral type dynamic equations
Electronic Journal of Qualitative Theory of Differential Equations, 2013 The oscillation behavior of solutions for higher-order delay dynamic equations of neutral type is investigated by making use of comparison with second-order dynamic equations.
Said Grace, Raziye Mert, Agacik Zafer
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A comparison of responses and stimuli as time markers [PDF]
Behavioural Processes, 2009 A rat's behavior, as well as a stimulus, may be a time marker. But do they lead to similar performance? Eight rats were trained on a 20-s DRL procedure in which head-entry responses were time markers, i.e., each head-entry response indicated that food would not be delivered for 20s.
Marcelo S, Caetano, Russell M, Church
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Differences in Time Comparison and Positioning of BDS-3 PPP-B2b Signal Broadcast Through GEO
Remote SensingThe BeiDou-3 Navigation Satellite System (BDS-3) precise point positioning (PPP) service through the B2b signal (PPP-B2b) leverages precise correction data disseminated by satellites to eliminate or mitigate key error sources, including satellite orbit ...
Hongjiao Ma +4 more
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An extended Halanay inequality of integral type on time scales
Electronic Journal of Qualitative Theory of Differential Equations, 2015 In this paper, we obtain a Halanay-type inequality of integral type on time scales which improves and extends some earlier results for both the continuous and discrete cases. Several illustrative examples are also given.
Boqun Ou, Baoguo Jia, Lynn Erbe
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Comparison of the Expressiveness of Timed Automata and Time Petri Nets [PDF]
, 2005 In this paper we consider the model of Time Petri Nets (TPN) where time is associated with transitions. We also consider Timed Automata (TA) as defined by Alur & Dill, and compare the expressiveness of the two models w.r.t. timed language acceptance and (weak) timed bisimilarity. We first prove that there exists a TA $\mathcal{A}$s.t.
Berard, Béatrice +4 more
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The Role of Physical Activity on Spatial and Temporal Cognitive Processing in Young Women
Brain SciencesBackground/Objectives: Physical activity (PA) has many benefits for both physical and cognitive health. It has also been related to improvements in memory and executive functions. However, its impact on time estimation remains less explored.
Joaquín Castillo-Escamilla +2 more
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Sex Differences in Countermovement Jump Phase Characteristics
Sports, 2017 The countermovement jump (CMJ) is commonly used to explore sex differences in neuromuscular function, but previous studies have only reported gross CMJ measures or have partly examined CMJ phase characteristics.
John J. McMahon +2 more
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Comparison and Evaluation of Real-Time Taqman PCR for Detection and Quantification of Ebolavirus
Viruses, 2021 Given that ebolavirus causes severe and frequently lethal disease, its rapid and accurate detection using available and validated methods is essential for controlling infection.
Yi Huang, Shuqi Xiao, Zhiming Yuan
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