247,282 research outputs found
Publication speed in pharmacy practice journals: A comparative analysis
Background Scholarly publishing system relies on external peer review. However, the duration of publication process is a major concern for authors and funding bodies. Objective To evaluate the duration of the publication process in pharmacy practice journals compared with other biomedical journals indexed in PubMed. Methods All the articles published from 2009 to 2018 by the 33 pharmacy practice journals identified in Mendes et al. study and indexed in PubMed were gathered as study group. A comparison group was created through a random selection of 3000 PubMed PMIDs for each year of study period. Articles with publication dates outside the study period were excluded. Metadata of both groups of articles were imported from PubMed. The duration of editorial process was calculated with three periods: acceptance lag (days between 'submission date' and 'acceptance date'), lead lag (days between 'acceptance date' and 'online publication date'), and indexing lag (days between 'online publication date' and 'Entry date'). Null hypothesis significance tests and effect size measures were used to compare these periods between both groups. Results The 33 pharmacy practice journals published 26,256 articles between 2009 and 2018. Comparison group random selection process resulted in a pool of 23,803 articles published in 5,622 different journals. Acceptance lag was 105 days (IQR 57-173) for pharmacy practice journals and 97 days (IQR 56-155) for the comparison group with a null effect difference (Cohen's d 0.081). Lead lag was 13 (IQR 6-35) and 23 days (IQR 9-45) for pharmacy practice and comparison journals, respectively, which resulted in a small effect. Indexing lag was 5 days (IQR 2-46) and 4 days (IQR 2-12) for pharmacy practice and control journals, which also resulted in a small effect. Slight positive time trend was found in pharmacy practice acceptance lag, while slight negative trends were found for lead and indexing lags for both groups. Conclusions Publication process duration of pharmacy practice journals is similar to a general random sample of articles from all disciplines
Citing for High Impact
The question of citation behavior has always intrigued scientists from
various disciplines. While general citation patterns have been widely studied
in the literature we develop the notion of citation projection graphs by
investigating the citations among the publications that a given paper cites. We
investigate how patterns of citations vary between various scientific
disciplines and how such patterns reflect the scientific impact of the paper.
We find that idiosyncratic citation patterns are characteristic for low impact
papers; while narrow, discipline-focused citation patterns are common for
medium impact papers. Our results show that crossing-community, or bridging
citation patters are high risk and high reward since such patterns are
characteristic for both low and high impact papers. Last, we observe that
recently citation networks are trending toward more bridging and
interdisciplinary forms.Comment: 10 pages, 6 figures, 1 tabl
Collaboration in an Open Data eScience: A Case Study of Sloan Digital Sky Survey
Current science and technology has produced more and more publically
accessible scientific data. However, little is known about how the open data
trend impacts a scientific community, specifically in terms of its
collaboration behaviors. This paper aims to enhance our understanding of the
dynamics of scientific collaboration in the open data eScience environment via
a case study of co-author networks of an active and highly cited open data
project, called Sloan Digital Sky Survey. We visualized the co-authoring
networks and measured their properties over time at three levels: author,
institution, and country levels. We compared these measurements to a random
network model and also compared results across the three levels. The study
found that 1) the collaboration networks of the SDSS community transformed from
random networks to small-world networks; 2) the number of author-level
collaboration instances has not changed much over time, while the number of
collaboration instances at the other two levels has increased over time; 3)
pairwise institutional collaboration become common in recent years. The open
data trend may have both positive and negative impacts on scientific
collaboration.Comment: iConference 201
The effect of service time variability on maximum queue lengths in M^X/G/1 queues
We study the impact of service-time distributions on the distribution of the
maximum queue length during a busy period for the M^X/G/1 queue. The maximum
queue length is an important random variable to understand when designing the
buffer size for finite buffer (M/G/1/n) systems. We show the somewhat
surprising result that for three variations of the preemptive LCFS discipline,
the maximum queue length during a busy period is smaller when service times are
more variable (in the convex sense).Comment: 12 page
The classical origin of modern mathematics
The aim of this paper is to study the historical evolution of mathematical
thinking and its spatial spreading. To do so, we have collected and integrated
data from different online academic datasets. In its final stage, the database
includes a large number (N~200K) of advisor-student relationships, with
affiliations and keywords on their research topic, over several centuries, from
the 14th century until today. We focus on two different topics, the evolving
importance of countries and of the research disciplines over time. Moreover we
study the database at three levels, its global statistics, the mesoscale
networks connecting countries and disciplines, and the genealogical level
Automatically assembling a full census of an academic field
The composition of the scientific workforce shapes the direction of
scientific research, directly through the selection of questions to
investigate, and indirectly through its influence on the training of future
scientists. In most fields, however, complete census information is difficult
to obtain, complicating efforts to study workforce dynamics and the effects of
policy. This is particularly true in computer science, which lacks a single,
all-encompassing directory or professional organization. A full census of
computer science would serve many purposes, not the least of which is a better
understanding of the trends and causes of unequal representation in computing.
Previous academic census efforts have relied on narrow or biased samples, or on
professional society membership rolls. A full census can be constructed
directly from online departmental faculty directories, but doing so by hand is
prohibitively expensive and time-consuming. Here, we introduce a topical web
crawler for automating the collection of faculty information from web-based
department rosters, and demonstrate the resulting system on the 205
PhD-granting computer science departments in the U.S. and Canada. This method
constructs a complete census of the field within a few minutes, and achieves
over 99% precision and recall. We conclude by comparing the resulting 2017
census to a hand-curated 2011 census to quantify turnover and retention in
computer science, in general and for female faculty in particular,
demonstrating the types of analysis made possible by automated census
construction.Comment: 11 pages, 6 figures, 2 table
Evolutionary Events in a Mathematical Sciences Research Collaboration Network
This study examines long-term trends and shifting behavior in the
collaboration network of mathematics literature, using a subset of data from
Mathematical Reviews spanning 1985-2009. Rather than modeling the network
cumulatively, this study traces the evolution of the "here and now" using
fixed-duration sliding windows. The analysis uses a suite of common network
diagnostics, including the distributions of degrees, distances, and clustering,
to track network structure. Several random models that call these diagnostics
as parameters help tease them apart as factors from the values of others. Some
behaviors are consistent over the entire interval, but most diagnostics
indicate that the network's structural evolution is dominated by occasional
dramatic shifts in otherwise steady trends. These behaviors are not distributed
evenly across the network; stark differences in evolution can be observed
between two major subnetworks, loosely thought of as "pure" and "applied",
which approximately partition the aggregate. The paper characterizes two major
events along the mathematics network trajectory and discusses possible
explanatory factors.Comment: 30 pages, 14 figures, 1 table; supporting information: 5 pages, 5
figures; published in Scientometric
- …