Modelling Intra-Day Seasonality and Forecasting Densities in Financial Duration Data

2007 ◽  
Author(s):  
Zdravetz Lazarov ◽  
Michael McAleer
Keyword(s):  
Duration Data

Testing the spatial applicability of the Johnson–Woodward method for estimating solar radiation from sunshine duration data

2008 ◽  
Vol 148 (3) ◽  
pp. 466-480 ◽  
Author(s):  
D.G. Miller ◽  
M. Rivington ◽  
K.B. Matthews ◽  
K. Buchan ◽  
G. Bellocchi
Keyword(s):  
Solar Radiation ◽  
Sunshine Duration ◽  
Duration Data

Heterogeneity in norovirus shedding duration affects community risk

2013 ◽  
Vol 141 (8) ◽  
pp. 1572-1584 ◽  
Author(s):  
M. O. MILBRATH ◽  
I. H. SPICKNALL ◽  
J. L. ZELNER ◽  
C. L. MOE ◽  
J. N. S. EISENBERG
Keyword(s):  
Attack Rate ◽  
Transmission Model ◽  
Reproductive Number ◽  
Risk Models ◽  
Common Cause ◽  
Viral Shedding ◽  
Duration Data ◽  
Community Risk ◽  
Community Transmission ◽  
The Impact

SUMMARYNorovirus is a common cause of gastroenteritis in all ages. Typical infections cause viral shedding periods of days to weeks, but some individuals can shed for months or years. Most norovirus risk models do not include these long-shedding individuals, and may therefore underestimate risk. We reviewed the literature for norovirus-shedding duration data and stratified these data into two distributions: regular shedding (mean 14–16 days) and long shedding (mean 105–136 days). These distributions were used to inform a norovirus transmission model that predicts the impact of long shedders. Our transmission model predicts that this subpopulation increases the outbreak potential (measured by the reproductive number) by 50–80%, the probability of an outbreak by 33%, the severity of transmission (measured by the attack rate) by 20%, and transmission duration by 100%. Characterizing and understanding shedding duration heterogeneity can provide insights into community transmission that can be useful in mitigating norovirus risk.

Simulation of Correlated Rainfall Amount and Duration Data

1985 ◽  
Vol 28 (1) ◽  
pp. 129-132 ◽  
Author(s):  
K. B. Rojiani ◽  
K. A. Tarbell ◽  
V. O. Shanholtz ◽  
F. E. Woeste
Keyword(s):  
Rainfall Amount ◽  
Duration Data

On the value of taxonomic standardization in evolutionary studies

Paleobiology ◽  
1987 ◽  
Vol 13 (2) ◽  
pp. 169-176 ◽  
Author(s):  
Stephen J. Culver ◽  
Martin A. Buzas ◽  
Laurel S. Collins
Keyword(s):  
Benthic Foraminifera ◽  
Literature Search ◽  
Extensive Literature ◽  
Museum Collections ◽  
Duration Data ◽  
Evolutionary Studies ◽  
Extensive Literature Search

Species duration data for living benthic foraminifera derived from an extensive literature search have been compiled and analyzed to investigate rates and patterns of species origination. The same data subjected to taxonomic standardization through examination of many specimens lodged in museum collections indicate strikingly different, and more realistic, rates and patterns.Evolutionary generalizations based on data generated from the literature only are often unreliable and may be directly in opposition to reality. Extensive attempts at taxonomic standardization should be the norm in paleobiological investigations.

scholarly journals Shared or Separate Representations? The Spanish Palatal Nasal in Early Spanish/English Bilinguals

Languages ◽  
2020 ◽  
Vol 5 (4) ◽  
pp. 50
Author(s):  
Sara Stefanich ◽  
Jennifer Cabrelli
Keyword(s):  
Heritage Speakers ◽  
Previous Evidence ◽  
Duration Data ◽  
Discrete Representations ◽  
Heritage Speakers Of Spanish ◽  
Repetition Task

The purpose of this study is to examine phonetic interactions in early Spanish/English bilinguals to see if they have established a representation for the Spanish palatal nasal /ɲ/ (e.g., /kaɲon/ cañón ‘canyon’) that is separate from the similar, yet acoustically distinct English /n+j/ sequence (e.g., /kænjn̩/ ‘canyon’). Twenty heritage speakers of Spanish completed a delayed repetition task in each language, in which a set of disyllabic nonce words were produced in a carrier phrase. English critical stimuli contained an intervocalic /n+j/ sequence (e.g., /dɛnjɑ/ ‘denya’) and Spanish critical stimuli contained intervocalic /ɲ/ (e.g., /deɲja/ ‘deña’). We measured the duration and formant contours of the following vocalic portion as acoustic indices of the /ɲ/~/n+j/ distinction. The duration data and formant contour data alike show that early bilinguals distinguish between the Spanish /ɲ/ and English /n+j/ in production, indicative of the maintenance of separate representations for these similar sounds and thus a lack of interaction between systems for bilinguals in this scenario. We discuss these discrete representations in comparison to previous evidence of shared and separate representations in this population, examining a set of variables that are potentially responsible for the attested distinction.

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