bluuebunny/crossref_metadata_2025_split huggingface dataset:
Evaluation of Multiple Precipitation Sensor Designs for Precipitation Rate and Depth, Drop Size and Velocity Distribution, and Precipitation Type
Authors: Pickering Ben S. , Neely Ryan R. , Jeffery Judith , Dufton David , Lukach Maryna 
Published: January 2021

AbstractObservations of the precipitation rate/depth, drop size distribution, drop velocity distribution, and precipitation type are compared from six in situ precipitation sensor designs over 12 months to assess their performance and provide a benchmark for future design and deployment. The designs considered are tipping bucket (TBR), drop counting (RAL), acoustic (JWD), optical (LPM), single-angle visiometer with capacitor (PWD21), and dual-angle visiometer (PWS100). Precipitation rates are compared for multiple time resolutions over the study period, while drop size and velocity distributions are compared with cases at stable precipitation rates. To examine precipitation type, a new index and a logic algorithm to amalgamate consecutive precipitation type observations consistently is introduced and applied. Overall, the choice of instrument for deployment depends on the usage. For fast response (less than 15 min), the PWD21 and TBR should not be used. As precipitation rate or the duration of a sample increases, the correlation of the TBR with the majority of other instruments increases. However, the PWD21 consistently underestimates precipitation. The RAL, PWS100, and JWD are within ±15% for precipitation depth over 12 months. All instruments are inconsistent in their ability to observe drop size and velocity distributions for differing precipitation rates. There is low agreement between the instruments for precipitation type estimation. The PWD21 and PWS100 rarely report some precipitation types, but the LPM reports more broadly. Meteorological stations should use several instrument designs for redundancy and to more accurately capture precipitation characteristics.
The Role of Eddies in the Zonal and Meridional Overturning Circulations of Buoyancy-Forced Basins
Authors: Bire Suyash , Wolfe Christopher L.P. 
Published: January 2021

AbstractThe zonal and meridional overturning circulations of buoyancy-forced basins are studied in an eddy-resolving model. The zonal overturning circulation (ZOC) is driven by the meridional gradient of buoyancy at the surface and stratification at the southern boundary. The ZOC, in turn, produces zonal buoyancy gradients through upwelling and downwelling at the western and eastern boundaries, respectively. The meridional overturning circulation (MOC) is driven by these zonal gradients rather than being directly driven by meridional gradients. Eddies lead to a broadening of the upwelling and downwelling limbs of the ZOC, as well as a decoupling of the locations of vertical and diapycnal transport. This broadening is more prominent on the eastern boundary, where westward-moving eddies transport warm water away from a poleward-flowing eastern boundary current. Most of the diapycnal downwelling occurs in the “swash zone”—the region where the isopycnals intermittently come in contact with the surface and lose buoyancy to the atmosphere. A scaling for the overturning circulations, which depends on the background stratification and the surface buoyancy gradient, is derived and found to be an excellent fit to the numerical experiments.
Australian Tornadoes in 2013: Implications for Climatology and Forecasting
Authors: Allen John T. , Allen Edwina R. , Richter Harald , Lepore Chiara 
Published: January 2021

AbstractDuring 2013, multiple tornadoes occurred across Australia, leading to 147 injuries and considerable damage. This prompted speculation as to the frequency of these events in Australia, and whether 2013 constituted a record year. Leveraging media reports, public accounts, and the Bureau of Meteorology observational record, 69 tornadoes were identified for the year in comparison to the official count of 37 events. This identified set and the existing historical record were used to establish that, in terms of spatial distribution, 2013 was not abnormal relative to the existing climatology, but numerically exceeded any year in the bureau’s record. Evaluation of the environments in which these tornadoes formed illustrated that these conditions included tornado environments found elsewhere globally, but generally had a stronger dependence on shear magnitude than direction, and lower lifting condensation levels. Relative to local environment climatology, 2013 was also not anomalous. These results illustrate a range of tornadoes associated with cool season, tropical cyclone, east coast low, supercell tornado, and low shear/storm merger environments. Using this baseline, the spatial climatology from 1980 to 2019 as derived from the nonconditional frequency of favorable significant tornado parameter environments for the year is used to highlight that observations are likely an underestimation. Applying the results, discussion is made of the need to expand observing practices, climatology, forecasting guidelines for operational prediction, and improve the warning system. This highlights a need to ensure that the general public is appropriately informed of the tornado hazard in Australia, and provide them with the understanding to respond accordingly.
Self-Organization and Maintenance of Simulated Nocturnal Convective Systems from PECAN
Authors: Parker Matthew D. 
Published: January 2021

AbstractThe Plains Elevated Convection at Night (PECAN) field project was designed to explain the evolution and structures of nocturnal mesoscale convective systems (MCSs) and relate them to specific mechanisms and environmental ingredients. The present work examines four of the strongest and best-organized PECAN cases, each numerically simulated at two different levels of complexity. The suite of simulations enables a longitudinal look at how nocturnal MCSs resemble (or differ from) more commonly studied diurnal MCSs. All of the simulations produce at least some surface outflow (“cold pools”), with stronger outflows occurring in environments with more CAPE and weaker near-ground stability. As these surface outflows emerge, the lifting of near-ground air occurs, causing each simulated nocturnal MCS to ultimately become “surface-based.” The end result in each simulation is a quasi-linear convective system (QLCS) that is most intense toward the downshear flank of its cold pool, with the classical appearance of many afternoon squall lines. This pathway of evolution occurs both in fully heterogeneous real-world-like simulations and horizontally homogeneous idealized simulations. One of the studied cases also exhibits a back-building “rearward off-boundary development” stage, and this more complex behavior is also well simulated in both model configurations. As a group, the simulations imply that a wide range of nocturnal MCS behaviors may be self-organized (i.e., not reliant on larger-scale features external to the convection).
Signatures of Oceanic Wind Events in Geostationary Cloud Top Temperature and Lightning Data
Authors: Thompson Kelsey B. , Bateman Monte G. , Mecikalski John R. 
Published: January 2021

AbstractA total of 13 ocean-based wind events from 2018, detected by buoys and Coastal-Marine Automated Network (C-MAN) stations, were analyzed using 1-min mesoscale sector Advanced Baseline Imager (ABI) cloud top brightness temperature (CTTB) data, as well as 1-min Geostationary Lightning Mapper (GLM) lightning data. The ABI and GLM instruments are located on the Geostationary Operational Environmental Satellite-16 (GOES-16) satellite. An oceanic wind event was defined as a buoy or C-MAN station-recorded peak wind gust of at least 14 m s−1, associated with a convective storm. The wind gust was required to exceed the wind speed by at least 4 m s−1 at the time of the event, but not exceed the corresponding wind speed by at least 4 m s−1 for more than 30 min. This study hypothesized that prior to a wind event, there should be unique signatures in ABI CTTB and GLM lightning datasets. The presumption was that the minimum CTTB and maximum flash rate should occur near the same time and prior to the event. The minimum CTTB occurred an average of 10.5 min and a median of 7 min prior to events, with a range from 29 min prior to 1 min after the event. Changes in CTTB were often subtle. A maximum flash rate occurred within 5 min of the minimum CTTB for 11 of the 12 events with lightning and did not exceed 11 flashes per minute for 9 of the 12 events with lightning. Operational weather forecasters might use CTTB and lightning trends to help identify storms capable of producing significant oceanic wind events.
Portal Vein Thrombosis Following Splenectomy in Children: Is There a Higher Rate When Using Single-Incision Laparoscopy?
Authors: Esparaz Joseph R. , Onwubiko Chinwendu , Mortellaro Vincent E. 
Published: January 2021

Background Portal vein thrombosis can be a life-threatening complication associated with a splenectomy. Laparoscopic splenectomy has been suggested to cause an increased rate of portal vein thrombosis. Our study evaluated the rate of portal vein thrombosis in pediatric patients who underwent a splenectomy via single-site laparoscopy. Methods A retrospective chart review was performed for all patients undergoing laparoscopic splenectomy from November 2012 to July 2019. Demographic data, operative details, postoperative imaging, and patient outcomes were obtained for analysis. Patients were contacted to determine if they had any complications for which they sought medical care elsewhere. Results There were 78 pediatric patients who underwent laparoscopic splenectomy over the 7-year period. The most common indication was sickle cell disease (70.5%). Single-incision laparoscopy was performed in 61.5% of the cases. Eight were converted to open. Eleven patients (14.1%) had a laparoscopic cholecystectomy performed during the same operation. The overall complication rate was 8.9%. A quarter of our patients had imaging within 1 year of surgery; no portal vein thrombosis was identified. In addition, over half of the patients were recontacted for follow-up questioning. None of the patients surveyed sought medical care elsewhere for a surgery-related complication or sequela of a portal vein thrombus. Discussion Single-incision laparoscopic splenectomy is a safe approach in children. Using the single-site platform allows the flexibility to perform additional operations, such as cholecystectomy, without the placement of additional ports. This analysis shows that patients undergoing single-incision laparoscopic splenectomy do not have a higher rate for portal vein thrombosis.
Appendectomy Does Not Increase the Risk of Future Emergence of Parkinson’s Disease: A Meta-analysis
Authors: Ishizuka Mitsuru , Shibuya Norisuke , Takagi Kazutoshi , Hachiya Hiroyuki , Tago Kazuma , Suda Kotaro , Aoki Taku , Kubota Keiichi 
Published: January 2021

Objective To explore the impact of appendectomy history on emergence of Parkinson’s disease (PD). Background Although there are several studies to investigate the relationship between appendectomy history and emergence of PD, the results are still controversial. Methods We performed a comprehensive electronic search of the literature (the Cochrane Library, PubMed, and the Web of Science) up to April 2020 to identify studies that had employed databases allowing comparison of emergence of PD between patients with and those without appendectomy history. To integrate the impact of appendectomy history on emergence of PD, a meta-analysis was performed using random-effects models to calculate the risk ratio (RR) and 95% confidence interval (CI) for the selected studies, and heterogeneity was analyzed using I2 statistics. Results Four studies involving a total of 6 080 710 patients were included in this meta-analysis. Among 1 470 613 patients with appendectomy history, 1845 (.13%) had emergences of PD during the observation period, whereas among 4 610 097 patients without appendectomy history, 6743 (.15%) had emergences of PD during the observation period. These results revealed that patients with appendectomy history and without appendectomy had almost the same emergence of PD (RR, 1.02; 95% CI, .87-1.20; P = .83; I2 = 87%). Conclusion This meta-analysis has demonstrated that there was no significant difference in emergence of PD between patients with and those without appendectomy history.
Presenting Symptomatology of Mediastinal Masses and Its Effect on Surgical Outcomes
Authors: Napolitano Michael A , Werba Gregor , Desai Sonia A , Sparks Andrew D , Mortman Keith D 
Published: January 2021

Objective Mediastinal masses are commonly encountered by the thoracic surgeon. Few studies have reported on the frequency and characteristics of symptoms at presentation. The primary objective of this study is to determine how often patients present with symptoms from a mediastinal mass. The secondary objective is to determine if the presence of symptoms has an effect on outcomes after surgery. Methods A retrospective review of an institutional database was performed. All patients who underwent surgical resection of a mediastinal mass from 2013 to 2019 were included in the analysis. Medical records were reviewed for the presence or absence of symptoms preoperatively, and these cohorts were compared. Multivariable analysis was performed, adjusting for clinical variables to assess for differences between these cohorts. Results 70 patients underwent surgery for a mediastinal mass. The average age was 49.2 years, and 46 patients (65.7%) presented with symptoms. There were no significant differences in demographics between the symptomatic and asymptomatic groups. The most common symptom was dyspnea in 18 patients (22%), followed by chest pain (15 patients, 19%) and dysphagia (8 patients, 10%). When comparing symptomatic and asymptomatic patients, symptomatic patients had a larger tumor size (5.8 cm vs 3.8 cm, P = .04) and a longer length of stay (2.0 days vs 1.2 days, P = .02). Conclusions The majority of patients with mediastinal masses present with symptoms, with the most common symptom being dyspnea. Symptomatic patients are more likely to have a larger tumor and tend to have a longer length of hospital stay postoperatively compared to asymptomatic patients.
Postoperative Opioid Utilization and Patient Satisfaction in General Surgery Procedures: A Prospective Observational Study
Authors: Linnaus Maria E. , Neville Matthew R. , Habermann Elizabeth B. , Gray Richard J. 
Published: January 2021

Background Wide variation of opioid prescribing persists despite attempts to quantify number of opioids utilized postoperatively. We aim to prospectively determine number of opioids used after common surgery procedures to guide future prescribing. Methods A prospective observational trial was performed of opioids prescribed and used postoperatively. Patients filled out pre- and postoperative surveys, and number of opioids utilized was captured at postoperative visit. Results One-hundred-and-thirteen patients met inclusion. Median opioids prescribed exceeded number of opioids taken for all procedures. Median number of opioids taken postoperatively was fewer than 10 for all categories of procedures: simple skin/soft tissue 2 (IQR 1-4), complex skin/soft tissue 1.5 (IQR 0-14), simple laparoscopy 1 (IQR 0-20) and complex laparoscopy 4 (IQR 0-20), laparotomy 0 (IQR 0-26), and open inguinal hernia 2 (IQR 0-2). Nearly 80% of patients had leftover opioids, and 31% planned to keep them. There was little difference between preoperative and postoperative level of satisfaction with a pain control regimen. Discussion Postoperatively, patients utilize opioids less frequently than prescribed and often keep leftover pills. Patient pain control satisfaction is unrelated to number of opioids prescribed and taken postoperatively.
Evaluating patient education resources for supporting treatment decisions in latent tuberculosis infection
Authors: Clarke Amy L , Sowemimo Tamilore , Jones Annie SK , Rangaka Molebogeng X , Horne Rob 
Published: January 2021

Objective: People with latent tuberculosis infection (LTBI) are required to make complex treatment decisions, which require an understanding of personal risk and associated benefits. However, many people with LTBI in the United Kingdom are at risk of low health literacy and can also experience language barriers, which can affect decision making. Patient education resources can support understanding but must meet the needs of the target population. The aim of this study was to evaluate the accessibility, readability and content of LTBI patient education resources. Design: Review and descriptive analysis of online LTBI patient education resources. Setting: UK-based online patient education resources. Method: We searched UK public health and charitable organisations for online LTBI patient education resources. Resources were evaluated in terms of accessibility (availability of translated versions); readability (Flesch–Kincaid Reading Ease [FKE], Flesch–Kincaid Grade Level [FKG] and Simplified Measure of Gobbledygook [SMOG]), theoretical content (Extended Common-Sense Model) and principles of shared decision making. Results: Seventeen out of 60 articles identified in the search met the prespecified criteria for inclusion. Translated materials were available for 7 of them. The overall mean ±  SD readability scores and corresponding reading ages were FKE 63.51 ± 8.81 (13–15 years), FKG 9.14 ± 8.95 (13–15 years) and SMOG 8.27 ± 1.51 (13–14 years). No resources met Health Education England recommended readability levels for health-related information. Dimensions of cognitive representations of illness and treatment most commonly addressed included treatment control, cause and identity (symptom and label); no resources addressed emotional identity. Conclusion: Current and future LTBI patient education resources would benefit from greater consideration of the needs of non-English language speakers, readability and theoretical content to improve patient illness experience and support informed treatment decision making.
Limiting the executive power after the Second World War: the invention of administrative science
Authors: Mavrot Céline 
Published: January 2021

This article analyses the emergence of administrative science in France in the wake of the Second World War. The birth of this discipline is examined through the history of its founders, a group of comparatist aiming at developing universal administrative principles. The post-war context prompted the creation of checks and balances against administrative power (through oversight of the legality of administrative action) and against the powers of nation states (through human rights and international organizations). Administrative science and comparative law were meant to rebuild international relations. The history of this discipline highlights a legal project to redefine the role and limits of executive power at the dawn of the construction of a new world order. Points for practitioners Looking at long-term developments in the science of administration helps to inform administrative practice by providing a historical and reflective perspective. This article shows how a new understanding of the administrative reality emerged after the fall of the totalitarian regimes of the first half of the 20th century. It highlights the different ways in which administrative power was controlled after the Second World War through greater oversight over administrative legality, the establishment of universal administrative principles and the proclamation of human rights. Questions of administrative legitimacy and the limitation of administrative power are still very much part of the daily practice of executive power, and represent a central aspect of administrative thinking.
Sources of climate change information used by newspaper journalists in Tanzania
Authors: Siyao Peter Onauphoo , Sife Alfred Said 
Published: January 2021

This article assesses the information sources used by Tanzanian newspaper journalists to collect climate change information. The main sources of climate change information consulted by newspaper journalists in Tanzania are climate change experts and daily events, such as community meetings and other relevant social gatherings. These sources are interactive – enabling journalists to obtain climate change information – and easily accessible, and use and provide instant responses. It was also found that deficient use of other potential sources of information, such as libraries, printed materials and Internet websites, coupled with overarching challenges that limit newspaper journalists from seeking, covering and reporting information on climate change, may affect the quality and quantity of climate change information published in Tanzanian newspapers. All the stakeholders involved in the fight against climate change and journalism colleges should collaborate and devise strategies aimed at building the capacity of newspaper journalists, editors and reporters in their daily activities.
Patient-Reported Outcomes and Knee Mechanics Correlate With Patellofemoral Deep Cartilage UTE-T2* 2 Years After Anterior Cruciate Ligament Reconstruction
Authors: Williams Ashley A. , Erhart-Hledik Jennifer C. , Asay Jessica L. , Mahtani Gordhan B. , Titchenal Matthew R. , Lutz Amelie M. , Andriacchi Thomas P. , Chu Constance R. 
Published: January 2021

Background: Patellofemoral joint degeneration and dysfunction after anterior cruciate ligament reconstruction (ACLR) are increasingly recognized as contributors to poor clinical outcomes. Purpose: To determine if greater deep cartilage matrix disruption at 2 years after ACLR, as assessed by elevated patellofemoral magnetic resonance imaging (MRI) ultrashort echo time–enhanced T2* (UTE-T2*), is correlated with (1) worse patient-reported knee function and pain and (2) gait metrics related to patellofemoral tracking and loading, such as greater external rotation of the tibia at heel strike, reduced knee flexion moment (as a surrogate of quadriceps function), and greater knee flexion angle at heel strike. Study Design: Cross-sectional study; Level of evidence, 3. Methods: MRI UTE-T2* relaxation times in patellar and trochlear deep cartilage were compared with patient-reported outcomes and ambulatory gait metrics in 60 patients with ACLR at 2 years after reconstruction. ACLR gait metrics were compared with those of 60 uninjured reference patients matched by age, body mass index, and sex. ACLR UTE-T2* values were compared with those of 20 uninjured reference patients. Results: Higher trochlear UTE-T2* values were associated with worse Knee injury and Osteoarthritis Outcome Scores (KOOS) Sport/Recreation subscale scores (rho = −0.32; P = .015), and showed a trend for association with worse KOOS Pain subscale scores (rho = −0.26; P = .045). At 2 years after ACLR, greater external rotation of the tibia at heel strike was associated with higher patellar UTE-T2* values ( R = 0.40; P = .002); greater knee flexion angle at heel strike was associated with higher trochlear UTE-T2* values (rho = 0.39; P = .002); and greater knee flexion moment showed a trend for association with higher trochlear UTE-T2* values (rho = 0.30; P = .019). Patellar cartilage UTE-T2* values, knee flexion angle at heel strike, and external rotation of the tibia at heel strike were all elevated in ACLR knees as compared with reference knees ( P = .029, .001, and .044, respectively). Conclusion: Patellofemoral deep cartilage matrix disruption, as assessed by MRI UTE-T2*, was associated with reduced sports and recreational function and with gait metrics reflective of altered patellofemoral loading. As such, the findings provide new mechanistic information important to improving clinical outcomes related to patellofemoral dysfunction after ACLR.