1,721,086 research outputs found
Kittiwake dynamics
No full text<p>Code and data for the ms ""Food abundance, kittiwake life histories, and colony dynamics in the Northeastern Pacific: implications of climate change and regime shifts"</p>
<p>by</p>
<p>Simone Vincenzi, Marc Mangel</p>
<p>Code is in Kittiwake pop dyn.r</p>
<p>RDS and txt files are to uploaded following the instructions in Kittiwake pop dyn.r</p>
<p> </p
Marble trout life histories
No full text<p>Code and the data for the manuscript "Within and among-population variation in vital traits and dynamics in a variable environment" by Simone Vincenzi, Marc Mangel, Dusan Jesensek, J Carlos Garza, Alain J Crivelli.</p>
<p> </p>
<p>Online Code and Results reports at this time some additional results that are referred to, but not reported in the manuscript. At a later stage it will report all results as to provide complete and reproducible analyses.</p
Trade-offs between accuracy and interpretability in random-effects models of growth - Data and code
No full text<p>Data and code for the analysis presentend in the manuscript "Trade-offs between accuracy and interpretability in random-effects models of growth" by Simone Vincenzi, Alain J Crivelli, Stephan Munch, Hans J Skaug, Marc Mangel.</p>
<p>README.txt has general information on admb</p>
<p>Flow analysis.txt has the step by step guidelines to redo the analysis presented in the manuscript</p>
<p>vB.zip has all the files necessary to repeat the analysis.</p>
<p>You can drop me a line at [email protected]</p
Data for the manuscript "Extinction risk and evolution of a quantitative trait in a variable environment with increasing frequency of extreme events"
No full text<p>Data for the manuscript</p>
<p>"Extinction risk and evolution of a quantitative trait in a variable environment with increasing frequency of extreme events"</p>
<p>by Simone Vincenzi</p>
<p> </p>
<p>the file ext.RDS can be loaded in R by typing</p>
<p>ext.df = readRDS("ext.RDS")</p>
<p>after having moved the file to you current directory</p>
<p> </p>
<p>In the data set, I included the following variables and outcomes of simulations:</p>
<p>sel - strength of selection</p>
<p>cat.freq - probability of occurrence of point extremes</p>
<p>pop.ext10.rand - mean population size in the "sampling window"</p>
<p>addvar.mean.10.rand. - mean additive genetic variance in the "sampling window"</p>
<p>meanopt - directional trend</p>
<p>mut - mutation amplitude</p>
<p>mean.pheno - mean phenotype at the end of simulation time (interesting for replicates in which ext = 1)</p>
<p>cat.bef - number of point extremes in the five years before extinction (interesting for replicates in which ext = 1)</p>
<p>ext_year - extinction time (299 for replicates that persisted up to the end of simulation time)</p>
<p>ext - extinct (1) or not (0)</p>
<p> </p>
<p> </p
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Recruitment data for kittiwakes breeding in Middleton Island (Alaska)
No full text<p>Data from the experimental manipulation of food availability during early development and at recruitment for a long-lived seabird, the black-legged kittiwake Rissa tridactyla, breeding on Middleton Island, Alaska. Birds were born and raised in nests with supplemented food (“Fed”) or unsupplemented control nests (“Unfed”), and later recruited into either Fed or Unfed nests.</p>
<p>-----------</p>
<p>Data have been collected by Scott Hatch.</p>
<p>Data have been prepared and presented in the current form by Simone Vincenzi.</p>
<p>------------</p>
<p>Dataset:</p>
<p>---------</p>
<p>The dataset reports the variables and descriptors explained below relative to both the nestling phase and recruitment phase</p>
<p>----------</p>
<p>For each individual (each row), we recorded:</p>
<p>Feeding: feeding treatment (Fed/Unfed) at the nestling stage</p>
<p>Rank: hatching order (A-chick, B-chick, C-chick, Singleton)</p>
<p>Band: ID of bird</p>
<p>Mean_growth: daily growth during the linear phase in g/day (between day 5 and day 20, from approximately 75 to 300 g)</p>
<p>Peak_weight: maximum weight reached by the chick (g)</p>
<p>Year_of_birth</p>
<p>Sex</p>
<p>Treatment_recruit: feeding treatment (Fed/Unfed) at breeding</p>
<p>First_breeding: year at recruitment</p>
<p>Recruit_age: age at recruitment</p>
<p>Clutch_size: number of eggs laid by the female</p>
<p>Chicks_fledged: number of chicks leaving the nest</p>
<p>Repro_succ01_rel: Chicks fledged per nest (productivity) at first breeding relative to the mean productivity in that year for Fed or Unfed nests</p
Growth data for kittiwakes breeding in Middleton Island (Alaska)
No full text<p>Data from the experimental manipulation of food availability during early development and at recruitment for a long-lived seabird, the black-legged kittiwake Rissa tridactyla, breeding on Middleton Island, Alaska. Birds were born and raised in nests with supplemented food (“Fed”) or unsupplemented control nests (“Unfed”), and later recruited into either Fed or Unfed nests.</p>
<p>---------</p>
<p>Data have been collected by Scott Hatch.</p>
<p>Data have been prepared and presented in the current form by Simone Vincenzi.</p>
<p>----------</p>
<p>Dataset:</p>
<p>---------</p>
<p>The dataset reports the variables and descriptors explained below relative to the nestling phase.</p>
<p>----------</p>
<p>Panel: Position in the colony</p>
<p>Window: if present, identifies the location within the panel</p>
<p>Feeding: feeding treatment at birth (Fed/Unfed)</p>
<p>Rank: hatching order (A-, B-, C-chick, Singleton)</p>
<p>Band: ID of the kittiwake</p>
<p>Age: days since hatching</p>
<p>Weight: in grams</p>
<p>Wing: length of the wing in mm, if measured</p>
<p>Year: year of birth</p>
<p>Sex</p>
<p> </p
- …
