bluuebunny/crossref_metadata_2025_split huggingface dataset:
Actitudes y percepciones de la población de La Habana sobre la COVID-19
Authors: Herrera-Masó Juan Rubén , Chaple-Gil Alain Manuel , Rodríguez-Ledesma Ernesto Boris , Hernández-Alarcón Luisa , Pérez-Hernández Carlos L. , Fernández-Peña Gisselle , Márquez-Morales Nidia 
Published: November 2021

Objetivo: Explorar sobre las actitudes y percepciones de la población de La Habana sobre la COVID-19.
Material y métodos: Se realizó un estudio descriptivo transversal en una población de 2012 ciudadanos habaneros que, de forma anónima y voluntaria, respondieron un cuestionario en línea distribuido en redes sociales entre mayo y junio de 2021. Se emplearon variables sobre la caracterización demográfica y las relacionadas con el objeto de estudio agrupadas en causas a las que atribuyen la situación epidemiológica actual: sociales, estatales y externas. Se utilizó prueba estadística ꭕ2 y modelo de los Residuos Corregidos.
Resultados: los participantes de los municipios de Playa (14,1%), Plaza de la revolución (13,2%) y 10 de octubre (12,7%) fueron los más predominantes. Las tres causas predominantes según más del 80% los ciudadanos fueron “Violación del distanciamiento social”, “Resquebrajamiento de la disciplina social” y “Celebración y festividades”. Las causas referidas relacionadas con la dimensión estatal se destacaron las violaciones del distanciamiento social, la apertura de los aeropuertos, y la eliminación de las pesquisas activa en la comunidad. El 43.5% (13,411) de las respuestas a 14 de las 32 señaladas por los encuestados están relacionadas con la baja percepción de riesgo de la población.
Conclusiones: Desde la percepción de la población se evidencia que no es posible atribuir la situación epidemiológica de La Habana debido a la COVID-19 solo a consecuencia de la baja percepción de riesgo de la sociedad, este es un fenómeno multicausal con causas atribuidas a la acción/inacción estatal y al comportamiento social.
Evaluation of the relationship between anti-inflammatory cytokines and adverse cardiac remodeling after myocardial infarction
Authors: Ferhat Eyyupkoca , Karabekir Ercan , Gultekin Karakus , Orhan Karayigit , Onur Yildirim , Nilnur Eyerci 
Published: November 2021

Aim To clarify the role of interleukin (IL) – 10 and members of its subfamily (IL-19 and IL-26) in cardiac remodeling during the post-myocardial infarction (MI) period.Material and methods A total of 45 patients with ST-segment elevation MI were enrolled. Serum cytokine concentrations were measured at the first day and 14 days post-MI. Left ventricular (LV) reverse remodeling (RR) was defined as the reduction of LV end-diastolic volume or LV end-systolic volume by ≥ 12 % in cardiac magnetic resonance images at 6‑mo follow-up. A 12 % increase was defined as adverse remodeling (AR).Results The post-MI first-day median IL-10 (9.7 pg / ml vs. 17.6 pg / ml, p<0.001), median IL-19 (28.7 pg / ml vs. 36.9 pg / ml, p<0.001), and median IL-26 (47.8 pg / ml vs. 90.7 pg / ml, p<0.001) were lower in the RR group compared to the AR group. There was a significant decrease in the concentration of anti-inflammatory cytokines in the AR group from the first to the 14 days post-MI. However, no significant change was observed in the RR group. Regression analysis revealed that a low IL-10 concentration on the post-MI first day was related to RR (OR=0.76, p=0.035). A 1 % increase in change of IL-10 concentration increased the probability of RR by 1.07 times.Conclusion The concentrations of cytokines were higher in the AR group, but this elevation was not sustained and significantly decreased for the 14 days post-MI. In the RR group, the concentrations of cytokines did not change and stable for the 14 days post-MI. As a reflection of this findings, stable IL-10 concentration may play a role the improvement of cardiac functions.
COMPARISON OF OPTIONS FOR THE HEAT DISTRIBUTION NETWORK OF THE RESIDENTIAL NEIGHBORHOOD
Authors: Aleksakhin O. , Yena S. , Hordiienko O. , Novikov V. , Tsemokh D. 
Published: November 2021

The comparison of heat losses by pipelines of an extensive residential neighborhood heating system for two options of the distribution network was carried out for a residential neighborhood in Kharkov. The proposed configuration of the heating network differs from the existing ("basic") one in using of the law of heating medium flow rate variation along the heat pipe length. This law takes into account increased flow rate of heating water through branches at the initial sections of the pipeline. The actual flow rate distribution is approximated by a step function. The difference in the laws of flow rate variation is taken into account by the exponent value. The calculation of heat losses was carried out for underground pipelining in non-accessible tunnels. The temperature of heat line water is taken to be the corresponding to the design outdoor air temperature for heating according to the temperature schedule of the heating network. Specific heat losses by pipelines in heat network sections are considered to be at the standard level for non-accessible tunnels. The soil temperature at the depth of the heat pipe axis is taken equal to 5°C. Heat losses by the structural elements of the heat network are taken into account by a factor of 1.15. The variation of the flow rate and temperature of network water in rated pipeline sections is considered in the analysis. The water flow rate at the sections was found based on the design thermal loads of connected buildings.
It is shown that when choosing the configuration of the distribution network of the heating system of a group of buildings, preference should be given to the option with a lower value of the exponent in the equation for heating medium flow rate variation along the length of the main line of the network. For extensive heating networks, this can be achieved by connecting as many buildings as possible to the heating network sections close to a heat supply station. An increase in the network water flow rate through the branches at the initial sections of the pipeline ensures a decrease in heat losses by the network pipelines. For the considered part of a residential neighborhood, the decrease in heat loss at the design outdoor air temperature for heating is 5.5 %.
PENGARUH MODEL PEMBELAJARAN LURING DAN MODEL PEMBELAJARAN DARING TERHADAP PRESTASI BELAJAR SISWA METTA SCHOOL
Authors: Dhamayanti Wina , Silvya Indraningtyas  , Sastrosupadi Adji 
Published: November 2021

Penelitian ini bertujuan untuk mengetahui perbedaan pengaruh antara model pembelajaran luring dan model pembelajaran daring terhadap prestasi belajar siswa SD Metta School Surabaya. Desain yang digunakan dalam penelitian berbentuk eksperimen dengan pendekatan kuantitatif. Instrumen yang digunakan dalam penelitian ini adalah angket yang disebarkan kepada 44 siswa SD dari kelas III-VI dan dokumen berupa nilai raport siswa. Data yang telah diperoleh dari penyebaran angket kemudian dianalisis menggunakan skala likert dan diuji dengan menggunakan uji-z.
Hasil penelitian ini menunjukkan bahwa model pembelajaran luring dan model pembelajaran daring ada pengaruh terhadap prestasi belajar, jika ditinjau dari persen capaian sebesar 95% dan 79,75%. Selanjutnya berdasarkan uji-z diperoleh nilai signifikansi 6,827> , sehingga dapat disimpulkan bahwa ada pengaruh yang sangat nyata pada model pembelajaran luring dan model pembelajaran daring terhadap prestasi belajar. Jadi, peran guru dalam proses pembelajaran sangat penting untuk memancing motivasi belajar anak. Hal tersebut, juga harus didorong oleh usaha peserta didik dalam kegiatan belajar, sehingga pengalaman yang diperolehnya dapat memberikan manfaat dalam belajar.
Kata-kata Kunci: Luring, Daring, Prestasi Belajar

Abstract: The study aims to determine the difference in the effect of offline learning model and online learning model on student achievement at Metta School Surabaya Elementary School. The design used in this research is in the form of an experiment with a quantitative approach. The instrument used in this study was a questionnaire distributed to 44 elementary school students from grades III-VI and a document in the form of student report cards. Data obtained from questionnaire distribution and then analyzed using a Likert scale and tested using the z-test.
The results of this study indicate that the offline learning model and online learning model have an influence on learning achievement, when viewed from the percentage of achievement of 95% and 79,75%. Furthermore, based on the z-test, a significance value of 6,827> was obtained, so it can be concluded that there is a very significance effect on the offline learning model and online learning model on learning achievement.
Keywords: Offline Learning Model, Online Learning Model, Learning Achievement
National Trends in Post-Acute Care Costs Following Total Hip Arthroplasty from 2010 through 2018
Authors: Serino Joseph , Burnett Robert A. , Della Valle Craig J. , Courtney P. Maxwell 
Published: November 2021

Background:
Post-acute care remains a target for episode-of-care cost reduction following total hip arthroplasty (THA). The introduction of bundled payment models in the United States in 2013 aligned incentives among providers to reduce post-acute care resource utilization. Institution-level studies have shown increased rates of home discharge with substantial cost savings after adoption of bundled payment models; however, national data have yet to be reported. The purpose of this study was to evaluate national trends in post-acute care utilization and costs following primary THA over the last decade.

Methods:
We reviewed the cases of 189,847 patients undergoing primary THA during 2010 through 2018 from the PearlDiver database. Annual trends in patient demographics, discharge disposition, and post-acute care resource utilization were evaluated. Post-acute care reimbursements were standardized to 2020 dollars and included outpatient visits, prescriptions, physical therapy, home health, inpatient rehabilitation, skilled nursing facilities, and any rehospitalizations or emergency department (ED) visits within 90 days of surgery.

Results:
From 2010 to 2018, the mean episode-of-care costs ($31,562 versus $24,188; p < 0.001) and overall post-acute care costs ($5,903 versus $3,485; p < 0.001) both declined. Post-acute care savings were primarily driven by reduced costs of skilled nursing facilities ($1,533 versus $627; p < 0.001), home health ($1,041 versus $763; p = 0.002), inpatient rehabilitation ($949 versus $552; p < 0.001), ED visits ($508 versus $102; p < 0.001), and rehospitalizations ($367 versus $179; p < 0.001). Post-acute care costs declined by $578 (p = 0.025) during 2010 to 2012, $768 (p = 0.038) during 2013 to 2015, and $884 (p = 0.020) during 2016 to 2018.

Conclusions:
Over the last decade, the rate of home discharge after THA increased while rehospitalization and ED visit rates declined, resulting in a substantial decrease in total and post-acute care costs. Post-acute care costs declined most rapidly after the introduction of the new Medicare bundled payment programs in 2013 and 2016.
Air quality in Barcelona during the COVID-19 lockdown and the global effect on CO2 emissions
Authors: Martín-Vide Javier , Zayas Alberto , Salvador Ferran , Moreno-García Mª Carmen 
Published: November 2021

Calidad del aire en Barcelona durante el confinamiento por la COVID-19 y su efecto global en las emisiones de CO2
La pandemia de la COVID-19 está teniendo un enorme impacto negativo en la salud humana, con más de 4,44 millones de muertos en todo el mundo; en la economía, con una profunda y abrupta crisis sin precedentes; y en la sociedad, con millones de personas en situación de desempleo y dependientes, en el mejor de los casos, de los sistemas de asistencia social o de bienestar público. El confinamiento domiciliario, las medidas para limitar la actividad económica no esencial y las restricciones de los viajes en muchos países durante la primavera de 2020 llevaron a mejoras rápidas en la calidad del aire de las ciudades. Un análisis detallado de las inmisiones diarias de Barcelona de siete contaminantes (CO, SO2, NO, NO2, NOx, PM10 y O3) muestra una clara disminución desde mediados de marzo hasta junio, con el pico en abril y en los óxidos de nitrógeno. Para estos contaminantes, la reducción de la densidad del tráfico es muy probablemente la principal causa de la disminución de sus inmisiones. Por otro lado, la reducción global de las emisiones de CO2 derivadas del uso de combustibles fósiles se estimó en aproximadamente un 8 % en 2020, lo que, a pesar de constituir una caída sin precedentes, tendrá poco impacto en las concentraciones de CO2 y de otros gases de efecto invernadero en la atmósfera. La situación actual debe ser vista como una oportunidad para impulsar, sin demora, un cambio drástico en los modelos energético y económico hacia un paradigma socioambiental basado en la sostenibilidad, la eficiencia económica y la solidaridad entre los pueblos.
Passive Walking Biped Robot Model with Flexible Viscoelastic Legs
Authors: Safartoobi Masoumeh , Daniali HamidReza Mohammadi , Dardel Morteza 
Published: November 2021

Abstract
To simulate the complex human walking motion accurately, a suitable biped model has to be proposed that can significantly translate the compliance of biological structures. In this way, the simplest passive walking model is often used as a standard benchmark for making the bipedal locomotion so natural and energy-efficient. This work is devoted to a presentation of the application of internal damping mechanism to the mathematical description of the simplest passive walking model with flexible legs. This feature can be taken into account by using the viscoelastic legs, which are constituted by the Kelvin–Voigt rheological model. Then, the update of the impulsive hybrid nonlinear dynamics of the simplest passive walker is obtained based on the Euler–Bernoulli’s beam theory and using a combination of Lagrange mechanics and the assumed mode method, along with the precise boundary conditions. The main goal of this study is to develop a numerical procedure based on the new definition of the step function for enforcing the biped start walking from stable condition and walking continuously. The study of the influence of various system parameters is carried out through bifurcation diagrams, highlighting the region of stable period-one gait cycles. Numerical simulations clearly prove that the overall effect of viscoelastic leg on the passive walking is efficient enough from the viewpoint of stability and energy dissipation.
Climate, Land use and Plant Richness Differently Shape Herbivory on Major Plant Functional Groups
Authors: Fricke Ute , Redlich Sarah , Zhang Jie , Tobisch Cynthia , Rojas-Botero Sandra , Benjamin Caryl , Englmeier Jana , Ganuza Cristina , Riebl Rebekka , Uhler Johannes , Uphus Lars , Ewald Jörg , Kollmann Johannes , Steffan-Dewenter Ingolf 
Published: November 2021

Abstract
Interactions between plants and herbivorous invertebrates drive the nutritional quality of resources for higher trophic levels, nutrient cycling and plant-community structure. Thereby, shifts in functional composition of plant communities particularly impact ecosystem processes. However, the current understanding of herbivory is limited concerning climate, land use and plant richness, as comparative studies of different plant functional groups are lacking. This study was conducted on 81 plots covering large climatic and land-use gradients in Bavaria, Germany. We investigated foliar invertebrate herbivory rates (proportional leaf-area loss, following ‘herbivory’) in three major plant functional groups (legumes, non-leguminous forbs, grasses). As drivers we considered multi-annual mean temperature (range: 6.5–10.0 °C), local habitat type (forest, grassland, arable field, settlement), local plant richness (species and family level, ranges: 10–50 species, 5–25 families) and landscape diversity (0.2–3-km scale). Our results largely confirm higher herbivory on legumes than on forbs and grasses. However, herbivory in forests was similar across plant functional groups since herbivory on legumes was low, e.g. lower than on legumes in grasslands. We also observed differential responses of herbivory among plant functional groups in response to plant richness (family level only), but not to landscape diversity. Temperature did not affect overall herbivory, but in grasslands higher temperature decreased herbivory on legumes and increased on forbs and grasses. We conclude that climate, habitat type and family-level plant richness likely assert different effects on herbivory among plant functional groups. This emphasises the importance of functional groups for understanding community-level herbivory and ecosystem functioning.
The Physician Assistant/associate Medical Workforce: 2020-2035
Authors: Hooker Roderick S. , Kulo Violet A. , Cawley James F , Kayingo Gerald 
Published: November 2021

Abstract
Background: Physician assistant/associates (PAs) are health care professionals whose roles expand universal access to a broad range of people across many nations. In the US, there is a growing shortage of physicians. PAs and advanced practice registered nurses (APRNs) were developed to help span medical providers' supply and demand gap. A forecasting project was undertaken to predict the likely census of PAs in the medical workforce spanning 2020 to 2035. Methods: Microsimulation modeling of the American PA workforce was performed using standard stock and flow format. The number of clinically active PAs employed in 2020 formed the baseline. Graduation rates and PA program expansion were factored as critical parameters to predict annual growth; attrition estimates balanced the equation. Two models, one based on data from the Bureau of Labor Statistics (BLS) and another based on data from the National Commission on Certification of Physician Assistants (NCCPA), were analyzed to estimate future annual PA numbers. Results: As of 2020, the BLS estimated 125,280 PAs were employed in the medical workforce; the NCCPA estimate was 148,560 PA in active practice. The mean age was 40, and 76% were female. The Accreditation Review Commission accredited 277 PA education programs for the Physician Assistant (ARC-PA), and 99% had a graduating class. The mean annual graduation cohort was 45. The BLS model predicted approximately 204,243 clinically active PAs by 2035; the NCCPA-based model predicted 211,537 PAs in clinical practice. Conclusions: A physician assistant/associate predictive model based on two data sources projects the supply of PAs by 2035 between 204,000 and 212,000: a growth rate of ± 35% (3.5% model differences). If the most likely scenario is realized, the 15-year growth of the PA will help improve the gap in the supply and demand of American medical service.
The National and Global Impact of Systemic and Structural Violence on the Effective Prevention, Treatment and Management of COVID-19 in the African/Black Population: a Scoping Review Protocol
Authors: Timothy Roberta , Chin-see Robert , Martyniuk Julia , Pascal Djiadeu 
Published: November 2021

Abstract
Background: As the SARS-CoV-2 virus continues to ravage the globe and cases exploded rapidly, countries have been presented with challenging policy choices to contain the spread of COVID-19. In Canada, and globally, the COVID-19 pandemic has added a new stratum to the debate concerning the root causes of global and racial health inequities and disparities. Individuals who exist as targets of systemic inequities are not only more susceptible to contracting COVID-19, but they are also more likely to bear the greatest extent of the subsequent economic pandemic. Therefore, data collection that specifically focuses on the impact of COVID-19 on the lives and health of African/Black communities nationally and globally is needed to develop intersectional, culturally-relative, anti-racist/anti-oppression, empowerment-centered interventions and social policies to increase more efficient ways to support heterogeneous African/Black communities during and after the COVID-19 pandemic.The primary objective of this review is to investigate the impact and management of COVID-19 on African/Black individuals and communities in Canada and globally and understand how anti-black racism and intersectional violence impact the health of African/Black communities during the COVID-19 pandemic.Methods and analysis: A systematic search of published literature of quantitative and qualitative studies published on COVID-19 in Canada and globally will be conducted in Ovid Medline, Ovid EMBASE, EBSCO Cumulative Index to Nursing and Allied Health Literature, the Cochrane Library, Ovid PsychInfo, Ovid CAB Abstracts, Scopus, Web of Science, and Global Index Medicus.To be included in the review, studies should include data on COVID-19 in relation to African/Black individuals, population and communities in Canada and globally. The studies must discuss racism, oppression, anti-oppression, or systemic/structural violence and be published in English, French, Spanish, and Portuguese. The findings will be reported according to PRISMA-ScR.Conclusion: This review will collect important data and evidence on African/Black communities related to COVID-19. Moreover, this review could help identified existing gaps in COVID-19 management in the African/Black communities and inform future research. Furthermore, it could also be used in decision-making for health policy and promotion and can influence the services provided by healthcare facilities and community organizations around the globe. Systematic Review registrations: Open Science Framework (OSF). Submitted on November 1st, 2021.
Intestinal Metabolomics of Juvenile Lenok (Brachymystax Lenok) in Response to Heat Stress
Authors: Chen Yan , Liu Yang , Bai Yucen , Xu Shaogang , Yang Xiaofei , Cheng Bo 
Published: November 2021

Abstract
Changes in the metabolic profile within the intestine of lenok (Brachymystax lenok) when challenged to acute and lethal heat stress (HS) are studied using no-target HPLC-MS/MS metabonomic analysis. Of 51 differentially expressed metabolites identified in response to HS, 34 occurred in the positive ion mode and 17 in negative ion mode (VIP > 1, P < 0.05). Changes in metabolites (i.e. alpha-D-glucose, stachyose and L-lactate) related to carbohydrate and glycolysis are identified in HS-treated lenok. Fatty acid β-oxidation in HS-treated lenok was inhibited by accumulation of acetyl carnitine, palmitoylcarnitine, carnitine, and erucic acid. Many amino acids (L-tryptophan, D-proline, L-leucine, L-phenylalanine, L-aspartate, L-tyrosine, L-methionine, L-histidine and L-glutamine) decreased to support energy demands in HS-treated lenok. Oxidative damage in HS-treated lenok was indicated by decreased glycerophospholipid metabolites (i.e. glycerophosphocholine, 1-palmitoyl-2-hydroxy-sn-glycero-3-phosphoethanolamine, 1-palmitoyl-sn-glycero-3-phosphocholine, 1-stearoyl-2-oleoyl-sn-glycero-3-phosphocholine, and 1, 2-dioleoyl-sn-glycero-3-phosphatidylcholine), and increased oxylipin production (12-HETE and 9R, 10S-EpOME). Oxidative stress increased formation of eicosanoids and dicarboxylic acids, overwhelming the mitochondrial β-oxidation pathway, while minor oxidative pathways (omega-oxidation and peroxisomal beta-oxidation) were likely to be activated in HS-treated lenok.