Montsechia vidalii from the Barremian of Spain, the earliest known submerged aquatic angiosperm, and its systematic relationship to Ceratophyllum

Taxon ◽  
2020 ◽  
Vol 69 (6) ◽  
pp. 1273-1292
Author(s):  
Bernard Gomez ◽  
Véronique Daviero‐Gomez ◽  
Clément Coiffard ◽  
Abel Barral ◽  
Carles Martín‐Closas ◽  
...  
Keyword(s):  
Aquatic Angiosperm ◽  
Systematic Relationship

The Estimation of Blood Platelet Survival

1972 ◽  
Vol 28 (03) ◽  
pp. 447-456 ◽  
Author(s):  
E. A Murphy ◽  
M. E Francis ◽  
J. F Mustard
Keyword(s):  
Standard Deviation ◽  
Least Squares ◽  
Experimental Error ◽  
Blood Platelet ◽  
Least Squares Estimation ◽  
Systematic Relationship ◽  
Platelet Survival ◽  
The Mean ◽  
Normally Distributed

SummaryThe characteristics of experimental error in measurement of platelet radioactivity have been explored by blind replicate determinations on specimens taken on several days on each of three Walker hounds.Analysis suggests that it is not unreasonable to suppose that error for each sample is normally distributed ; and while there is evidence that the variance is heterogeneous, no systematic relationship has been discovered between the mean and the standard deviation of the determinations on individual samples. Thus, since it would be impracticable for investigators to do replicate determinations as a routine, no improvement over simple unweighted least squares estimation on untransformed data suggests itself.

Identification of three previously unknown morphs of Acyrthosiphon svalbardicum Heikinheimo (Hemiptera: Aphididae) on Spitsbergen

1993 ◽  
Vol 24 (1) ◽  
pp. 43-47 ◽  
Author(s):  
S.J. Coulson ◽  
W.C. Block ◽  
N.R. Webb ◽  
J.S. Bale ◽  
I.D. Hodkinson ◽  
...  
Keyword(s):  
Host Plant ◽  
Systematic Relationship ◽  
Dryas Octopetala

AbstractStrathdee, A. T. et al.: Identification of three previously unknown morphs of Acyrthosiphon svalbardicum Heikinheimo (Hemiptera: Aphididae) on Spitsbergen. Ent. scand. 24: 43-47. Copenhagen, Denmark. April 1993. ISSN 0013-8711. Descriptions are given of the previously unknown fundatrix, oviparous female and apterous male of Acyrthosiphon svalbardicum Heikinheimo. The host plant is Dryas octopetala L. The systematic relationship is discussed.

An Exploration of Accountants, Accounting Work, and Creativity

2011 ◽  
Vol 23 (1) ◽  
pp. 45-64 ◽  
Author(s):  
Stephanie M. Bryant ◽  
Dan Stone ◽  
Benson Wier
Keyword(s):  
The Self ◽  
Common Belief ◽  
Systematic Relationship ◽  
Governmental Accounting ◽  
Department Of Labor ◽  
Accounting Practice ◽  
Accounting Professionals ◽  
The Common

ABSTRACT: In two studies, we explore whether creativity is essential—or antithetical—to professional accounting work. In Study 1, archival analysis of U.S. Department of Labor data indicates that: (1) professional accounting work requires no less creativity than do three competing professions and a diverse sample of U.S. occupations, and (2) greater creativity may be required in financial than in auditing and taxation accounting work. In Study 2, a survey contrasts the self-assessed and number-of-uses creativity of governmental accounting professionals and Master’s of Accountancy (M.Acc.) students with that of M.B.A. students. Results indicate lower creativity among accountants and M.Acc. students compared with M.B.A. students, and no systematic relationship between ethics and creativity. We conclude that while creativity matters to accounting work—more to some areas of accounting practice than others—accountancy education and work may attract or reward entrants with less than desirable levels of creativity, perhaps due to the common belief that creativity is unneeded in, or even deleterious to, professional accountancy work.

scholarly journals Evolution of Aquatic Angiosperm Reproductive Systems

BioScience ◽  
1996 ◽  
Vol 46 (11) ◽  
pp. 813-826 ◽  
Author(s):  
C. Thomas Philbrick ◽  
Donald H. Les
Keyword(s):  
Reproductive Systems ◽  
Aquatic Angiosperm

scholarly journals Paleomycology of the Princeton Chert I. Fossil hyphomycetes associated with the early Eocene aquatic angiosperm, Eorhiza arnoldii

Mycologia ◽  
2013 ◽  
Vol 105 (3) ◽  
pp. 521-529 ◽  
Author(s):  
Ashley A. Klymiuk ◽  
Thomas N. Taylor ◽  
Edith L. Taylor ◽  
Michael Krings
Keyword(s):  
Early Eocene ◽  
Aquatic Angiosperm

scholarly journals Irregular sleep and event schedules are associated with poorer self-reported well-being in US college students

SLEEP ◽  
2019 ◽  
Vol 43 (6) ◽  
Author(s):  
Dorothee Fischer ◽  
Andrew W McHill ◽  
Akane Sano ◽  
Rosalind W Picard ◽  
Laura K Barger ◽  
...  
Keyword(s):  
College Students ◽  
Cluster Analysis ◽  
Sleep Duration ◽  
Well Being ◽  
Early Morning ◽  
Time Varying ◽  
Clinical Trial Registration ◽  
Systematic Relationship ◽  
Phase Deviation ◽  
Time Varying Covariates

Abstract Study Objectives Sleep regularity, in addition to duration and timing, is predictive of daily variations in well-being. One possible contributor to changes in these sleep dimensions are early morning scheduled events. We applied a composite metric—the Composite Phase Deviation (CPD)—to assess mistiming and irregularity of both sleep and event schedules to examine their relationship with self-reported well-being in US college students. Methods Daily well-being, actigraphy, and timing of sleep and first scheduled events (academic/exercise/other) were collected for approximately 30 days from 223 US college students (37% females) between 2013 and 2016. Participants rated well-being daily upon awakening on five scales: Sleepy–Alert, Sad–Happy, Sluggish–Energetic, Sick–Healthy, and Stressed–Calm. A longitudinal growth model with time-varying covariates was used to assess relationships between sleep variables (i.e. CPDSleep, sleep duration, and midsleep time) and daily and average well-being. Cluster analysis was used to examine relationships between CPD for sleep vs. event schedules. Results CPD for sleep was a significant predictor of average well-being (e.g. Stressed–Calm: b = −6.3, p < 0.01), whereas sleep duration was a significant predictor of daily well-being (Stressed–Calm, b = 1.0, p < 0.001). Although cluster analysis revealed no systematic relationship between CPD for sleep vs. event schedules (i.e. more mistimed/irregular events were not associated with more mistimed/irregular sleep), they interacted upon well-being: the poorest well-being was reported by students for whom both sleep and event schedules were mistimed and irregular. Conclusions Sleep regularity and duration may be risk factors for lower well-being in college students. Stabilizing sleep and/or event schedules may help improve well-being. Clinical Trial Registration NCT02846077.

scholarly journals “17” is odd and “seventeen” is even: Meaning and physical form in stimulus-parity synaesthesia

2018 ◽  
Vol 71 (9) ◽  
pp. 2005-2021
Author(s):  
Rebekah C White ◽  
Tsvetomira Dumbalska ◽  
Mihaela D Duta ◽  
Kate Nation
Keyword(s):  
Physical Properties ◽  
Contemporary Literature ◽  
Systematic Relationship ◽  
Physical Form ◽  
Stimulus Format ◽  
Words And Images ◽  
Conceptual Nature

For individuals with stimulus-parity synaesthesia, eliciting stimuli (e.g., shapes, numbers, letters, colours) trigger a compelling feeling of oddness or evenness. Given that (a) many inducers are conceptual and (b) parity is itself a conceptual property, one questions whether stimulus-parity synaesthesia will be a categorically higher subtype, such that the conceptual properties of stimuli will be crucial in determining parity. We explore this question as it applies to Synaesthete R, one of only two stimulus-parity synaesthetes known to the contemporary literature. In Experiments 1 and 2, we examine whether parity is tied to concepts or percepts, asking, for example, whether a rectangle is even regardless of whether it is presented as an image or a word. Our results indicate that the parity of shapes (words and images), numbers (words, digits, and Roman numerals), and letters (lowercase and uppercase) differs according to the stimulus format, supporting a perceptual explanation. In Experiment 3, we examine the parity of colour stimuli, showing a systematic relationship between the measurable physical properties of hue, saturation, and lightness and synaesthetic parity. Despite the conceptual nature of inducers and concurrents, for Synaesthete R, stimulus-parity synaesthesia is a lower subtype; perceptual properties of stimuli determine parity.

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