scholarly journals Publications Trends in Major Anesthesiology Journals: A 20-Year Analysis of Five Top-Ranked Journals in the Field

2021 ◽  
Vol 2 (5) ◽  
pp. 418-424
Author(s):  
Stefan Koppert ◽  
Michael Weibenbacher ◽  
Andreas Wieser ◽  
Christoph Zelger ◽  
Markus Hermann ◽  
...  
Keyword(s):  
Case Reports ◽  
Absolute Number ◽  
Publication Trends ◽  
Microsoft Excel ◽  
Rating Instrument ◽  
The Mean ◽  
Number Of Publications ◽  
The Individual ◽  
The Impact ◽  
Number Of Authors

Background: With the intention to quantify the importance of a medical journal, the Impact Factor (IF) was introduced. It has become a de facto fictive rating instrument of the importance of medical journals. Also, it is often used to assess the value of the individual publications within the specific journal. The aim of the present study was to analyze publication trends over 20 years in five high-ranked anesthesiology journals. Methods: The Medline (NCBI) database PubMed was used for analysis which was restricted to the following journals: 1. Anesthesiology; 2. British Journal of Anaesthesia; 3. Journal of Neurosurgical Anesthesiology; 4. Anesthesia & Analgesia; and 5. Anaesthesia. Specific publication parameters (IFs, number of pages and authors, etc.) were retrieved using the PubMed download function and imported into Microsoft Excel for further analysis. Results: The mean IF of the five journals analyzed increased significantly within the study period (1991 vs. 2010; +61.81%). However, the absolute number of case reports decreased significantly by 54.7% since 1991. The journals Br J Anaesth (12.2%), J Neurosurg Anesthesiol (51.9%), and Anesth Analg (57.2%) showed significant increases in the number of publications per year. The mean number of authors increased significantly in all the journals from 1991 to 2010 (3.0 vs. 4.3; +43.3%). Conclusions: The IF, as well as the number of articles per year and the number of authors per article, increased significantly. In contrast, the number of pages per article remained comparable during the period analyzed.

scholarly journals Association between stress and bilateral symmetrical alopecia in free-ranging Formosan macaques in Mt. Longevity, Taiwan

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Chen-Chih Chen ◽  
Ai-Mei Chang ◽  
Ming-Shan Tsai ◽  
Yen-Hua Huang ◽  
Kurtis Jai-Chyi Pei ◽  
...  
Keyword(s):  
Total Population ◽  
Causative Factor ◽  
Population Status ◽  
Adrenocortical Activity ◽  
High Incidence ◽  
Normal Hair ◽  
The Mean ◽  
The Individual ◽  
Free Ranging ◽  
The Impact

AbstractSince 2013, a high incidence of bilateral symmetrical alopecia has been observed in free-ranging Formosan macaques (Macaca cyclopis) in Mt. Longevity, Taiwan. We hypothesized that stress induces alopecia in this population. To verify our hypothesis, we evaluated the histopathological characteristics of skin biopsy and used a validated enzyme immunoassay (EIA) for fecal glucocorticoid metabolite (FGM) analysis, which act as an indicator of stress experienced by the individual. Follicular densities were lower (2.1–3.0 mm2) in individuals with symmetrical alopecia than in those with normal hair conditions (4.7 mm2). Furthermore, anagen to catagen/telogen ratios were lower in individuals with alopecia (0–1.4) than in those with normal hair (4.0). The histopathological characteristics of alopecia were similar to those of telogen effluvium, which indicates that stress is one of the possible etiologies. On the basis of the analytical and biological validation of EIAs for FGM analysis, 11β-hydroxyetiocholanolone was considered suitable for monitoring adrenocortical activity in both sexes of Formosan macaques. The mean concentrations (standard error; sample size) of 11β-hydroxyetiocholanolone were 2.02 (0.17; n = 10) and 1.41 (0.10; n = 31) μg/g for individuals with and without alopecia, respectively. Furthermore, the results of logistic regression analysis show that 11β-hydroxyetiocholanolone (p = 0.012) concentration was positively associated with alopecia. Thus, stress was the most likely to trigger symmetrical alopecia in Formosan macaques in Mt. Longevity. Although stress can decrease the fitness of an individual, considering the population status of Formosan macaques in Taiwan is stable and alopecia was only observed in our study area, which is isolated from other populations, the impact on the total population of Formosan macaque in Taiwan is limited. Nonetheless, stress-induced immunosuppression and alopecia might affect the local abundance and increase zoonosis risk due to frequent human–macaque contact in Mt. Longevity. Future studies are suggested to focus on the causative factor of stress and the effects of stress and alopecia on the health and welfare in the Formosan macaques.

scholarly journals Impact of a training program on the performance of graduating Canadian residents on a national urology exam: Results of the last 20 years

2018 ◽  
Vol 13 (2) ◽  
Author(s):  
Naji J. Touma ◽  
Darren T. Beiko ◽  
Andrew E. MacNeily ◽  
Michael J. Leveridge
Keyword(s):  
Training Program ◽  
Training Programs ◽  
Certification Exams ◽  
Certification Exam ◽  
Individual Program ◽  
The Mean ◽  
And Performance ◽  
The Individual ◽  
The Impact ◽  
Oral Component

Introduction: Many factors impact the performance of graduating residents on certification exams. It is thought that most factors are related to the individual candidate’s ability, motivation, and work ethic. Less understood, however, is whether a training program has any impact on the preparation and performance of its graduates on certification exams. We present 20 years of results of a national preparatory exam that all graduating residents complete about three months before the Royal College of Physicians and Surgeons of Canada (RCPSC) qualifying urology exam. This exam, known colloquially as QUEST, aims to simulate the RCPSC exam with written and oral components. We aimed to analyze the impact of a training program on the performance of its residents. Methods: A retrospective review of exam results from 1997–2016 was conducted. During that time, 495 candidates from all 12 Canadian urology training programs undertook the exam. The performance of graduating residents from each individual program was grouped together for any given year. The different programs were anonymized, as the aim of this study is to assess the impact of a training program and not to rate the different programs. Statistical analysis using one-way ANOVA was conducted. Results: All training programs fall within one standard deviation of the mean for the written component, the oral component, and the overall score. The residents of four training programs had statistically better scores than the overall mean of the written component. The residents of three out of these four training programs also had statistically better scores than the overall mean of the oral component and the overall results of the exam. Conclusions: Most Canadian training programs prepare their residents adequately for this simulated certification exam in urology. However, there are some training programs that consistently prepare graduating residents to outperform their peers.

scholarly journals Authorship and Citations in Foot and Ankle International from 1980-2017

2018 ◽  
Vol 3 (3) ◽  
pp. 2473011418S0015
Author(s):  
Daniel Bohl ◽  
Connor Wakefield ◽  
Emily He ◽  
Kamran Movassaghi ◽  
George Holmes ◽  
...  
Keyword(s):  
Case Reports ◽  
Country Of Origin ◽  
The United States ◽  
Foot And Ankle ◽  
Research Journal ◽  
Ankle Research ◽  
The Mean ◽  
American Orthopaedic ◽  
Over Time ◽  
Number Of Authors

Category: Other Introduction/Purpose: Orthopaedic foot and ankle surgery is a young and rapidly evolving orthopaedic subspecialty. Little is known regarding the authors contributing to the field. The purpose of this study is to characterize the demographics of the authors publishing foot and ankle research since the inception of the research journal of the American Orthopaedic Foot and Ankle Society. Methods: All publications in the journal Foot and Ankle International between 1980 and 2017 were reviewed. Papers were characterized in terms of number of authors, number of institutions, and number of references. The first and corresponding authors were also characterized in terms of country of origin, gender, and degree qualification. Each of these characteristics was tested for trends over time. Results: In total, 5,323 publications were reviewed, including 4,297 research articles, 367 case reports, 262 editorials, 159 letters, and 121 technique tips. The mean number of authors per paper increased from 2.3 during the 1980s to 4.3 during the 2010s (p<0.001). The percent of publications with female first authors increased from 4.9% during the 1980s to 13.2% during the 2010s (p<0.001). The country of origin shifted markedly away from the United States during the 1980s towards Europe and other countries during the 2010s (Figure 1). Podiatrists consisted of 1.3% of first authors and 1.4% of corresponding authors—these proportions did not meaningfully change over time (p>0.05). The mean number of references to other work increased from 13.8 during the 1980s to 24.4 during the 2010s (p<0.001). Conclusion: The authors of the foot and ankle literature have changed markedly over the past 4 decades. Most notably, there have been shifts towards female and international authorship. The number of authors per paper has also nearly doubled over time. Such trends are likely to continue as the field of foot and ankle grows.

scholarly journals Species Diversity of Oak Stands and Its Significance for Drought Resistance

2018 ◽  
Author(s):  
Jan Kotlarz ◽  
Sylwia Nasiłowska ◽  
Karol Rotchimmel ◽  
Katarzyna Kubiak
Keyword(s):  
Species Diversity ◽  
Satellite Images ◽  
Aerial Images ◽  
Summer Drought ◽  
Different Types ◽  
The Mean ◽  
The Individual ◽  
Pca Algorithm ◽  
The Impact ◽  
Remote Sensing Indices

Drought periods have an adverse impact on the condition of oak stands. Research on different types of ecosystems has confirmed a correlation between plant species diversity and the adverse effects of droughts. The purpose of this study was to investigate the changes which occurred in an oak stand (Krotoszyn Plateau, Poland) under the impact of the summer drought in 2015. We used a method based on remote sensing indices from satellite images in order to detect changes in the vegetation in 2014 and 2015. A positive difference was interpreted as an improvement, whereas a negative one was treated as a deterioration of the stand condition. The Shannon-Wiener species diversity was estimated using an iterative PCA algorithm based on aerial images. We observed a relationship between the species indices of the individual forest divisions and their response to drought. The highest correlation between the index differences and the Shannon-Wiener indices was found for the GNDVI index (+0.74). In addition, correlations were observed between the mean index difference and the percentage shares in the forest divisions of species such as Pinus sylvestris (+0.67 &plusmn; 0.08) and Quercus robur (-0.65 &plusmn; 0.10). Our results lead us to infer that forest management based on highly diverse habitats is more suitable to meet the challenges in the context of global climatic changes, characterized by increasingly frequent droughts.

scholarly journals Radiative forcing and climate metrics for ozone precursor emissions: the impact of multi-model averaging

2014 ◽  
Vol 14 (19) ◽  
pp. 27195-27231
Author(s):  
C. R. MacIntosh ◽  
K. P. Shine ◽  
W. J. Collins
Keyword(s):  
Radiative Forcing ◽  
Transport Model ◽  
Task Force ◽  
Mean Field ◽  
Model Averaging ◽  
Chemical Transport Model ◽  
Ensemble Mean ◽  
The Mean ◽  
The Individual ◽  
The Impact

Abstract. Multi-model ensembles are frequently used to assess understanding of the response of ozone and methane lifetime to changes in emissions of ozone precursors such as NOx, VOC and CO. When these ozone changes are used to calculate radiative forcing (RF) (and climate metrics such as the global warming potential (GWP) and global temperature potential (GTP)) there is a methodological choice, determined partly by the available computing resources, as to whether the mean ozone (and methane lifetime) changes are input to the radiation code, or whether each model's ozone and methane changes are used as input, with the average RF computed from the individual model RFs. We use data from the Task Force on Hemispheric Transport of Air Pollution Source-Receptor global chemical transport model ensemble to assess the impact of this choice for emission changes in 4 regions (East Asia, Europe, North America and South Asia). We conclude that using the multi-model mean ozone and methane responses is accurate for calculating the mean RF, with differences up to 0.6% for CO, 0.7% for VOC and 2% for NOx. Differences of up to 60% for NOx 7% for VOC and 3% for CO are introduced into the 20 year GWP as a result of the exponential decay terms, with similar values for the 20 years GTP. However, estimates of the SD calculated from the ensemble-mean input fields (where the SD at each point on the model grid is added to or subtracted from the mean field) are almost always substantially larger in RF, GWP and GTP metrics than the true SD, and can be larger than the model range for short-lived ozone RF, and for the 20 and 100 year GWP and 100 year GTP. We find that the effect is generally most marked for the case of NOx emissions, where the net effect is a smaller residual of terms of opposing signs. For example, the SD for the 20 year GWP is two to three times larger using the ensemble-mean fields than using the individual models to calculate the RF. Hence, while the average of multi-model fields are appropriate for calculating mean RF, GWP and GTP, they are not a reliable method for calculating the uncertainty in these fields, and in general overestimate the uncertainty.

scholarly journals Evolutionary Analysis by Whole-Genome Comparisons

2002 ◽  
Vol 184 (8) ◽  
pp. 2260-2272 ◽  
Author(s):  
Arvind K. Bansal ◽  
Terrance E. Meyer
Keyword(s):  
Single Gene ◽  
Absolute Number ◽  
Gene Content ◽  
Evolutionary Analysis ◽  
Orthologous Genes ◽  
Gram Positive Bacteria ◽  
Percentage Sequence Identity ◽  
The Mean ◽  
Domain V ◽  
The Impact

ABSTRACT A total of 37 complete genome sequences of bacteria, archaea, and eukaryotes were compared. The percentage of orthologous genes of each species contained within any of the other 36 genomes was established. In addition, the mean identity of the orthologs was calculated. Several conclusions result: (i) a greater absolute number of orthologs of a given species is found in larger species than in smaller ones; (ii) a greater percentage of the orthologous genes of smaller genomes is contained in other species than is the case for larger genomes, which corresponds to a larger proportion of essential genes; (iii) before species can be specifically related to one another in terms of gene content, it is first necessary to correct for the size of the genome; (iv) eukaryotes have a significantly smaller percentage of bacterial orthologs after correction for genome size, which is consistent with their placement in a separate domain; (v) the archaebacteria are specifically related to one another but are not significantly different in gene content from the bacteria as a whole; (vi) determination of the mean identity of all orthologs (involving hundreds of gene comparisons per genome pair) reduces the impact of errors in misidentification of orthologs and to misalignments, and thus it is far more reliable than single gene comparisons; (vii) however, there is a maximum amount of change in protein sequences of 37% mean identity, which limits the use of percentage sequence identity to the lower taxa, a result which should also be true for single gene comparisons of both proteins and rRNA; (viii) most of the species that appear to be specifically related based upon gene content also appear to be specifically related based upon the mean identity of orthologs; (ix) the genes of a majority of species considered in this study have diverged too much to allow the construction of all-encompassing evolutionary trees. However, we have shown that eight species of gram-negative bacteria, six species of gram-positive bacteria, and eight species of archaebacteria are specifically related in terms of gene content, mean identity of orthologs, or both.

Publication trends in clinical ophthalmology journals in the last decade

2021 ◽  
pp. 112067212110237
Author(s):  
Ofira Zloto ◽  
Eric Souied ◽  
Peerooz Saeed ◽  
Guy Ben Simon ◽  
Juliana Gildener-Leapman ◽  
...  
Keyword(s):  
Impact Factor ◽  
Anterior Chamber ◽  
Absolute Number ◽  
High Impact ◽  
Diagnosis And Treatment ◽  
High Impact Factor ◽  
Demographic Changes ◽  
Publication Trends ◽  
Number Of Publications ◽  
Medical Retina

Purpose: To examine the absolute number and the proportions of articles published in general high-ranked ophthalmology journals for each ophthalmic subspecialty during the last decade, and to examine the publishing trends over the study period. Methods: All original articles published between January 2010 and December 2019 in the selected general clinical ophthalmic journals were included in the study. All abstracts of original articles were reviewed and deemed to be related to 1 of the 11 ophthalmic subspecialties. Results: Six journals and 10,232 abstracts were reviewed. Articles focused on medical retina were the most common in the last decade (35.22%) while articles focused on strabismus were the least common (2.11%). The total number of articles published per year decreased during the last decade ( p  <  0.01). There was a significant reduction in the number of publications per year focused on anterior-chamber ( p =  0.012), cataract and refractive-surgeries ( p =  0.014), oculoplastic ( p  <  0.01), and strabismus ( p =  0.011). In each year during the last decade, the highest proportion of publications was focused on medical retina while the lowest proportion of publications in most of the years was focused on strabismus. There was a significant decrease during the years in the proportion of articles focused on oculoplastic ( p  <  0.01). Conclusions: During the last decade, there have been differences in the proportion of publications of different ophthalmology subspecialties in high impact factor journals. This probably derives from demographic changes and advances in diagnosis and treatment. The proportion of articles focused on medical retina was the highest during all years while the proportion of articles focused on strabismus was consistently the lowest.

scholarly journals Publications by Faculty Members of Humanities and Social Science Departments of IIT Kharagpur : A bibliometric study

2018 ◽  
Vol 38 (6) ◽  
pp. 403 ◽  
Author(s):  
Trishna Bhui ◽  
Nivedita Bhattacharyya Sahu
Keyword(s):  
Social Science ◽  
Citation Count ◽  
National Level ◽  
Faculty Members ◽  
Annual Reports ◽  
Institute Of Technology ◽  
Number Of Publications ◽  
The Individual ◽  
Journal Of Business Ethics ◽  
The Impact

<div class="page" title="Page 1"><div class="layoutArea"><div class="column"><p><span>This paper evaluates the citation count of article publications in journals by faculty members in the Humanities and Social Science (HSS) Departments of Indian Institute of Technology (IIT) Kharagpur. The publication data is retrieved from the individual bio-sketch and annual reports available in the websites for 17 years from 2000-2016. Web of Science database has been used for counting the citations. Parameters like total publications in journals, most preferred journal for publication, highly cited journals, collaborative status of faculty publications and thereby </span><span>their citation counts, faculty member receiving highest citation are studied. The finding reveals that 623 articles are </span><span>found in total 359 journal. There is an increasing trend in the number of publications over the years. The journal </span><span>named Psychological Studies ranked first with 27 publications of faculties whereas Journal of Business Ethics received highest citations and grabbed the first position amongst the journals. Collaborative researches by three authors received maximum citations. The faculty members are engaged in variant fields of research but the impact is </span><span>higher at national level than that of international level. Sage is found to be the most preferred publisher publishing journal articles of the faculty members from HSS Departments of IIT, Kharagpur. </span></p></div></div></div>

scholarly journals Quantifying the impact of the COVID-19 pandemic on orthopaedic trainees

2020 ◽  
Vol 1 (10) ◽  
pp. 645-652
Author(s):  
Gerard A. Sheridan ◽  
Andrew J. Hughes ◽  
John F. Quinlan ◽  
Eoin Sheehan ◽  
John M. O'Byrne
Keyword(s):  
Subjective Experience ◽  
High Volume ◽  
Predictor Variables ◽  
Subjective Experiences ◽  
Republic Of Ireland ◽  
The Mean ◽  
The Republic ◽  
The Individual ◽  
The Impact ◽  
Individual Trainee

Aims We aim to objectively assess the impact of COVID-19 on mean total operative cases for all indicative procedures (as outlined by the Joint Committee on Surgical Training (JCST)) experienced by orthopaedic trainees in the deanery of the Republic of Ireland. Subjective experiences were reported for each trainee using questionnaires. Methods During the first four weeks of the nationwide lockdown due to COVID-19, the objective impact of the pandemic on each trainee’s surgical caseload exposure was assessed using data from individual trainee logbook profiles in the deanery of the Republic of Ireland. Independent predictor variables included the trainee grade (ST 3 to 8), the individual trainee, the unit that the logbook was reported from, and the year in which the logbook was recorded. We used the analysis of variance (ANOVA) test to assess for any statistically significant predictor variables. The subjective experience of each trainee was captured using an electronic questionnaire. Results The mean number of total procedures per trainee over four weeks was 36.8 (7 to 99; standard deviation (SD) 19.67) in 2018, 40.6 (6 to 81; SD 17.90) in 2019, and 18.3 (3 to 65; SD 11.70) during the pandemic of 2020 (p = 0.043). Significant reductions were noted for all elective indicative procedures, including arthroplasty (p = 0.019), osteotomy (p = 0.045), nerve decompression (p = 0.024) and arthroscopy (p = 0.024). In contrast, none of the nine indicative procedures for trauma were reduced. There was a significant inter-unit difference in the mean number of total cases (p = 0.029) and indicative cases (p = 0.0005) per trainee. We noted that 7.69% (n = 3) of trainees contracted COVID-19. Conclusion During the COVID-19 pandemic, the mean number of operative cases per trainee has been significantly reduced for four of the 13 indicative procedures, as outlined by the JCST. Reassignment of trainees to high-volume institutions in the future may be a plausible approach to mitigate significant training deficits in those trainees worst impacted by the reduction in operative exposure.

scholarly journals Cirrus, Transport, and Mixing in the Tropical Upper Troposphere

2014 ◽  
Vol 71 (4) ◽  
pp. 1339-1352 ◽  
Author(s):  
Tra Dinh ◽  
Stephan Fueglistaler
Keyword(s):  
Radiative Heating ◽  
Transport Time ◽  
Adequate Model ◽  
Upper Troposphere ◽  
Advection Diffusion Equation ◽  
Free Region ◽  
The Mean ◽  
The Individual ◽  
The Impact ◽  
Tropical Upper Troposphere

Abstract The impact of cloud radiative heating on transport time scales from the tropical upper troposphere to the stratosphere is studied in two-dimensional numerical simulations. Clouds are idealized as sources of radiative heating and are stochastically distributed in space and time. A spatial probability function constrains clouds to occur in only part of the domain to depict heterogeneously distributed clouds in the atmosphere. The transport time from the lower to upper boundaries (age of air) is evaluated with trajectories. The spectra of age of air obtained in the simulations are bimodal, with the first mode composed of trajectories that remain in the cloudy part of the domain during their passages from the lower to upper boundaries, and the second mode composed of the remaining trajectories that visit the cloud-free regions. For the first group of trajectories only, the mean age scales inversely with the time-mean radiative heating in cloudy air, and the one-dimensional advection–diffusion equation provides an adequate model for transport. However, the exchange between the cloudy and cloud-free regions renders the mean age over all trajectories (including those that visit the cloud-free region) much longer than the time expected if all air parcels remain in cloudy air. In addition, the overall mean age is not inversely proportional to the time-mean heating rate in cloudy air. Sensitivity calculations further show that the sizes, durations, and amplitudes of the individual clouds are also important to the transport time. The results show that the frequently used decomposition of radiative heating into clear-sky and cloud radiative heating may give incorrect interpretations regarding the time scale of transport into the stratosphere.

Sign in / Sign up

Export Citation Format

Share Document