bluuebunny/crossref_metadata_2025 huggingface dataset:
A Targeted Metagenomics Approach to Study the Diversity of Norovirus GII in Shellfish Implicated in Outbreaks
Authors: Desdouits Marion , Wacrenier Candice , Ollivier Joanna , Schaeffer Julien , Le Guyader Françoise S.
Published: September 2020

Human noroviruses (NoV) cause epidemics of acute gastroenteritis (AGE) worldwide and can be transmitted through consumption of contaminated foods. Fresh products such as shellfish can be contaminated by human sewage during production, which results in the presence of multiple virus strains, at very low concentrations. Here, we tested a targeted metagenomics approach by deep-sequencing PCR amplicons of the capsid (VP1) and polymerase (RdRp) viral genes, on a set of artificial samples and on shellfish samples associated to AGE outbreaks, to evaluate its advantages and limitations in the identification of strains from the NoV genogroup (G) II. Using artificial samples, the method allowed the sequencing of most strains, but not all, and displayed variability between replicates especially with lower viral concentrations. Using shellfish samples, targeted metagenomics was compared to Sanger-sequencing of cloned amplicons and was able to identify a higher diversity of NoV GII and GIV strains. It allowed phylogenetic analyses of VP1 sequences and the identification, in most samples, of GII.17[P17] strains, also identified in related clinical samples. Despite several limitations, combining RdRp- and VP1-targeted metagenomics is a sensitive approach allowing the study NoV diversity in low-contaminated foods and the identification of NoV strains implicated in outbreaks.
Dance with the Devil: Stress Granules and Signaling in Antiviral Responses
Authors: Eiermann Nina , Haneke Katharina , Sun Zhaozhi , Stoecklin Georg , Ruggieri Alessia
Published: September 2020

Cells have evolved highly specialized sentinels that detect viral infection and elicit an antiviral response. Among these, the stress-sensing protein kinase R, which is activated by double-stranded RNA, mediates suppression of the host translation machinery as a strategy to limit viral replication. Non-translating mRNAs rapidly condensate by phase separation into cytosolic stress granules, together with numerous RNA-binding proteins and components of signal transduction pathways. Growing evidence suggests that the integrated stress response, and stress granules in particular, contribute to antiviral defense. This review summarizes the current understanding of how stress and innate immune signaling act in concert to mount an effective response against virus infection, with a particular focus on the potential role of stress granules in the coordination of antiviral signaling cascades.
Exploring the Remarkable Diversity of Culturable Escherichia coli Phages in the Danish Wastewater Environment
Authors: Olsen Nikoline S. , Forero-Junco Laura , Kot Witold , Hansen Lars H.
Published: September 2020

Phages drive bacterial diversity, profoundly influencing microbial communities, from microbiomes to the drivers of global biogeochemical cycling. Aiming to broaden our understanding of Escherichia coli (MG1655, K-12) phages, we screened 188 Danish wastewater samples and isolated 136 phages. Ninety-two of these have genomic sequences with less than 95% similarity to known phages, while most map to existing genera several represent novel lineages. The isolated phages are highly diverse, estimated to represent roughly one-third of the true diversity of culturable virulent dsDNA Escherichia phages in Danish wastewater, yet almost half (40%) are not represented in metagenomic databases, emphasising the importance of isolating phages to uncover diversity. Seven viral families, Myoviridae, Siphoviridae, Podoviridae, Drexlerviridae, Chaseviridae, Autographviridae, and Microviridae, are represented in the dataset. Their genomes vary drastically in length from 5.3 kb to 170.8 kb, with a guanine and cytosine (GC) content ranging from 35.3% to 60.0%. Hence, even for a model host bacterium, substantial diversity remains to be uncovered. These results expand and underline the range of coliphage diversity and demonstrate how far we are from fully disclosing phage diversity and ecology.
Bacillus subtilis and Pseudomonas fluorescens Trigger Common and Distinct Systemic Immune Responses in Arabidopsis thaliana Depending on the Pathogen Lifestyle
Authors: Nguyen Ngoc Huu , Trotel-Aziz Patricia , Villaume Sandra , Rabenoelina Fanja , Schwarzenberg Adrian , Nguema-Ona Eric , Clément Christophe , Baillieul Fabienne , Aziz Aziz
Published: September 2020

Plants harbor various beneficial bacteria that modulate their innate immunity, resulting in induced systemic resistance (ISR) against various pathogens. However, the immune mechanisms underlying ISR triggered by Bacillus spp. and Pseudomonas spp. against pathogens with different lifestyles are not yet clearly elucidated. Here, we show that root drenching of Arabidopsis plants with Pseudomonas fluorescensPTA-CT2 and Bacillus subtilis PTA-271 can induce ISR against the necrotrophic fungus B. cinerea and the hemibiotrophic bacterium Pseudomonas syringae Pst DC3000. In the absence of pathogen infection, both beneficial bacteria do not induce any consistent change in systemic immune responses. However, ISR relies on priming faster and robust expression of marker genes for the salicylic acid (SA), jasmonic acid (JA), and ethylene (ET) signaling pathways upon pathogen challenge. These responses are also associated with increased levels of SA, JA, and abscisic acid (ABA) in the leaves of bacterized plants after infection. The functional study also points at priming of the JA/ET and NPR1-dependent defenses as prioritized immune pathways in ISR induced by both beneficial bacteria against B. cinerea. However, B. subtilis-triggered ISR against Pst DC3000 is dependent on SA, JA/ET, and NPR1 pathways, whereas P. fluorescens-induced ISR requires JA/ET and NPR1 signaling pathways. The use of ABA-insensitive mutants also pointed out the crucial role of ABA signaling, but not ABA concentration, along with JA/ET signaling in primed systemic immunity by beneficial bacteria against Pst DC3000, but not against B. cinerea. These results clearly indicate that ISR is linked to priming plants for enhanced common and distinct immune pathways depending on the beneficial strain and the pathogen lifestyle.
Targeted Alteration of Antibody-Based Immunodominance Enhances the Heterosubtypic Immunity of an Experimental PCV2 Vaccine
Authors: Rakibuzzaman AGM , Kolyvushko Oleksandr , Singh Gagandeep , Nara Peter , Piñeyro Pablo , Leclerc Estelle , Pillatzki Angela , Ramamoorthy Sheela
Published: September 2020

Despite the availability of commercial vaccines which can effectively prevent clinical signs, porcine circovirus type 2 (PCV2) continues to remain an economically important swine virus, as strain drift, followed by displacement of new subtypes, occurs periodically. We had previously determined that the early antibody responses to the PCV2 capsid protein in infected pigs map to immunodominant but non-protective, linear B cell epitopes. In this study, two of the previously identified immunodominant epitopes were mutated in the backbone of a PCV2b infectious clone, to rationally restructure the immunogenic capsid protein. The rescued virus was used to immunize 3-week-old weanling piglets, followed by challenge with a virulent heterologous PCV2d strain. As expected, immunodominant antibody responses to the targeted epitopes were abrogated in vaccinated pigs, while a broadening of the virus neutralization responses was detected. Vaccinated pigs were completely protected against challenge viral replication, had reduced microscopic lesions in lymphoid organs and gained significantly more body weight when compared to unvaccinated pigs. Thus, the experimental PCV2 vaccine developed was highly effective against challenge, and, if adopted commercially, can potentially slow down or eliminate new strain creation.
Impact of Irrigation Frequency and Planting Density on Bean’s Morpho-Physiological and Productive Traits
Authors: Alves Souza Silas , Higino Vieira Joslanny , Bispo dos Santos Farias Diego , da Silva Gustavo Henrique , Cabral Aleman Catariny
Published: September 2020

The correct irrigation frequency relies on the plant population density to increase yield and efficiency in water use. A field experiment was carried out in 2019 to study the effect of three irrigation frequencies, one (F1), four (F2), and eight (F3) days, and four planting densities, 20 (D1), 24 (D2), 28 (D3), and 30 (D4) plants per m2, on the variables: soil moisture, actual water consumption, growth, grain yield, and water productivity of beans (Phaseolus vulgaris L.). The soil water balance was calculated based on the soil moisture, which was measured by tensiometers. The irrigation was done by a drip tape. The variation in soil moisture was greatly influenced by irrigation frequencies and planting densities in F3. Plant growth was not affected by treatments. Irrigation frequencies and planting densities have deeply affected the biometric and chlorophyll synthesis traits of beans. The highest yields were found in the treatments F1D3 (2968 kg ha−1), F1D4 (2997 kg ha−1), and F3D3 (2946 kg ha−1). For water productivity, treatments with F1 irrigation frequency and the higher planting densities were more efficient in water use. Overall, the results are useful for technicians and farmers who work with irrigation management on beans.
Effect of Fluvial Discharges and Remote Non-Tidal Residuals on Compound Flood Forecasting in San Francisco Bay
Authors: Tehranirad Babak , Herdman Liv , Nederhoff Kees , Erikson Li , Cifelli Robert , Pratt Greg , Leon Michael , Barnard Patrick
Published: September 2020

Accurate and timely flood forecasts are critical for making emergency-response decisions regarding public safety, infrastructure operations, and resource allocation. One of the main challenges for coastal flood forecasting systems is a lack of reliable forecast data of large-scale oceanic and watershed processes and the combined effects of multiple hazards, such as compound flooding at river mouths. Offshore water level anomalies, known as remote Non-Tidal Residuals (NTRs), are caused by processes such as downwelling, offshore wind setup, and also driven by ocean-basin salinity and temperature changes, common along the west coast during El Niño events. Similarly, fluvial discharges can contribute to extreme water levels in the coastal area, while they are dominated by large-scale watershed hydraulics. However, with the recent emergence of reliable large-scale forecast systems, coastal models now import the essential input data to forecast extreme water levels in the nearshore. Accordingly, we have developed Hydro-CoSMoS, a new coastal forecast model based on the USGS Coastal Storm Modeling System (CoSMoS) powered by the Delft3D San Francisco Bay and Delta community model. In this work, we studied the role of fluvial discharges and remote NTRs on extreme water levels during a February 2019 storm by using Hydro-CoSMoS in hindcast mode. We simulated the storm with and without real-time fluvial discharge data to study their effect on coastal water levels and flooding extent, and highlight the importance of watershed forecast systems such as NOAA’s National Water Model (NWM). We also studied the effect of remote NTRs on coastal water levels in San Francisco Bay during the 2019 February storm by utilizing the data from a global ocean model (HYCOM). Our results showed that accurate forecasts of remote NTRs and fluvial discharges can play a significant role in predicting extreme water levels in San Francisco Bay. This pilot application in San Francisco Bay can serve as a basis for integrated coastal flood modeling systems in complex coastal settings worldwide.
Comparison of Umbilical Cord Serum Vitamin D Levels between Infants with Transient Tachypnea of the Newborn and those without Respiratory Distress
Authors: Boskabadi Hassan , Maamouri Gholamali , Kalani-moghaddam Farnaz , Ataee Nakhaei Mohammad Hosein , Zakerihamidi Maryam , Rakhshanizadeh Forough
Published: September 2020

Background: Transient tachypnea of the newborn (TTN) is one of the most frequent causes of respiratory distress in neonates. A relationship has been shown between vitamin D deficiency and respiratory disorders in neonates. This research was carried out to evaluate the serum level of vitamin D in TTN newborns and their mothers compared to the control group. Methods: This case-control research was conducted during 2016-2019 in a general hospital affiliated with Mashhad University of Medical Sciences, Iran. Thirty-four infants with TTN and 82 neonates in the control group as well as their mothers were investigated. The levels of umbilical cord serum vitamin D in infants with TTN and also their mothers were compared to the control group. Results: The mean levels of serum vitamin D in infants with TTN and their mothers were 8.11 ± 4.32 and 12.6 ± 10.12 ng/mL, respectively (P<0.001), whereas they were 19.21 ± 12.71 and 25.96 ± 16.6 ng/mL in the newborns of the control group and their mothers, respectively (P<0.001). The mean differences (95% CI) of neonatal and maternal vitamin D level between the two groups were 11.10 (7.92–14.28) and 13.36 (7.90–18.08), respectively. In the TTN group, 100% of the infants had vitamin D levels less than 30 ng/mL (79.4% had severe, 17.6% had moderate and 2.9% showed mild deficiency). However, vitamin D levels lower than 30 ng/mL were observed in 76.4% of the neonates in the control group (28.8% had severe, 31.1% showed moderate and 16.3% had a mild deficiency) (P<0.001). Conclusion: The serum vitamin D levels of infants with TTN and their mothers were significantly lower than the control group. Therefore, TTN in infants may be reduced through the treatment of vitamin D deficiency in mothers.
PARTISIPASI PEREMPUAN DALAM PENGELOLAAN SAMPAH YANG BERNILAI EKONOMI DAN BERBASIS KEARIFAN LOKAL
Authors: Setyawati E Yuningtyas , Priyo Siswanto R Sapto Hadi
Published: September 2020

The purpose of this study is to determine women's participation in waste management that has economic value and based on local wisdom, but also to find out the factors that cause women to process and use waste.  This research is important to do because there is still a lack of environmental management by utilizing waste of economic value This study was conducted using a qualitative approach, in the form of embedded case studies. The focus of the study is the process and prospects for women's empowerment in Sitimulyo Village, Piyungan District, Bantul Regency, DIY.  Data were collected by interview method and analyzed using interactive analysis methods The results showed that the form of women's participation in environmental improvement took the form of donating voluntary labor and participating in waste management. Factors that cause mothers to process waste to create a cleaner environment and increase the family economy. Organic waste management is composted, while for inorganic waste various forms of handicraft and various household equipment are made. Waste management activities are carried out by utilizing local potential, the waste management that is carried out can familiarize the mothers and economically can improve the welfare of the family.
PENGARUH PENERAPAN MODEL PEMBELAJARAN TIPE TEAM GAMES TOURNAMENT DI INTEGRASIKAN DENGAN STAD TERHADAP HASIL BELAJAR GEOGRAFI
Authors: Endang Endang , Eraku Sunarty Suly , Lihawa Fitriyane
Published: September 2020

This study aims at determining the differences in student learning outcomes by involving two classes,i.e. the experimental  classes taugtt by TGT learning model integrated with the STAD learning model as well as the control class taught by the STAD learning model. This experimental research involved all students of grade XI social sciences, namely the experimental class ( XI Social Sciences 2 ) and the control class ( XI Scocial Sciences 4 ).The hypothesis testing results show that the average learnig value of the students in the experimental class is 77,43  and the average learning value in the control class is 71,95. Considering the hypothesis testing results in α = 0,05, it is found that tcount = 2,447 greater than ttabel =1.679. This signifies that H0 is rejected ,and the scoes of student who lerning with the TGT cooperative learning model integration with the STAD learning model are higher that students who used the STAD cooperative learning model in Geograhy learning.
The systematization of the life cycle stages of a test laboratory
Authors: Shkarina T. , Puzyreva A.
Published: September 2020

Statistics from the Federal Accreditation Service shows that the accreditation of most test laboratories was terminated at the request of accredited persons. The authors see the reason for this in the absence of detailed organizational diagnostics of laboratories' condition, the mechanism for managing the organizational environment and certain types of resources at different stages of development. The article substantiates the need to use the concept of the organization’s life cycle to ensure the stability of testing laboratories.
Factors influencing the pedicle screw fixation stability in patients with unstable lumbar and thoracolumbar spine injuries
Authors: Bokov A. E. , Mlyavykh S. G. , Brattsev I. S. , Dydykin A. V.
Published: September 2020

Background. One of the reasons for the lack of standardized approaches for treatment of lumbar and thoracolumbar spine traumatic injuries is inconclusive information on relative contribution of various factors to pedicle screw fixation stability.

Objective. To determine risk factors that influence pedicle screw fixation stability in patients with unstable traumatic injuries of a lumbar spine and thoracolumbar junction.

Material and methods. This was a retrospective evaluation of 192 spinal instrumentations. Patients with type А3, A4, B1, B2 and C injuries of lumbar and thoracolumbar spine were enrolled. Pedicle screw fixation was used either as a stand-alone technique or in combination with anterior column reconstruction. If required, decompression of nerve roots and spinal cord was performed. Cases with pedicle screw fixation failure were registered. Logistic regression analysis was used to assess predictive significance of potential risk factors. Results. Complication rate growth was associated with a decrease in bone radiodensity, posterior decompression extensiveness, lumbosacral fixation and residual kyphotic deformity. Anterior column reconstruction and additional pedicle screw installation led to a decline in complication rate while anterior decompression and fixation length did not influence fixation stability. Conclusion. In most cases, pedicle screw fixation system failure is associated with altered bone quality; however, surgical approach may also impact complication rate and should be taken into account planning surgical intervention. Anterior column reconstruction and additional pedicle screw installation are associated with the decline in complication rate; the influence of those options is comparable. Anterior decompression does not influence pedicle screw fixation stability; consequently, it is preferable in cases with considerable risk of pedicle screw fixation failure.
Evaluating the effectiveness of combined use of non-thermal atmospheric pressure plasma and frequently-modulated electric field signal in skin wound healing
Authors: Kostyakov D. V. , Zinovev E. V. , Soloshenko V. V. , Zavorotnii O. O. , Popov A. A. , Asadulaev M. S. , Osmanov K. F.
Published: September 2020

Background Scientists around the world are interested in applying physical phenomena to various fields of science. The development of entire areas united by one concept (‘plasma medicine’, etc.) stands as a bright example. Present work focuses on only two concepts of interest, which are plasma jet and electric field, as far as results of their combined use in clinical practice and in surgery remain understudied. Objective Experimental evaluation of the effectiveness of physical methods of treatment in skin wound healing. Material and methods The study was carried out on 45 small laboratory animals (rats). They were divided into 5 groups of 9 individuals in each according to method chosen for experimental wound healing. To generate the plasma jet, a portable generator was used, which is the original development of specialists of the Peter the Great St. Petersburg Polytechnic University. Planimetric and histological measurements were analysed. The antibacterial effectiveness of methods under research was investigated using Staphylococcus aureus 209P, cultivated in vitro on 6- and 12-millimeter discs. Discussion The combined use of non-thermal atmospheric pressure plasma and frequency-modulated electric field signal exhibited the ability to accelerate eschar separation by 52.1% (p < 0.05) and stimulate restorative regeneration by 56% (p < 0.05). Combination of physical methods of treatment demonstrated pronounced antibacterial effect. A histological examination on biopsy sample on the 21st day of observation revealed formed (mature) granulations and large number of newly formed vessels. The cellular composition of epidermal basement membrane showed high level of differentiation. Conclusion The data obtained suggest that the use of the proposed methods in clinical practice will improve the treatment process of the patients with wounds of different etiology.
A Longitudinal Analysis of Doctoral Graduate Supply in the Educational Measurement Field
Authors: Randall Jennifer , Rios Joseph , Jung Hyun Joo
Published: September 2020

For nearly three decades, researchers have been concerned that the educational measurement field is not producing enough graduate-level specialists to meet the growing demand driven by the increased use of educational assessments in the U.S. This study examined the supply-side aspect of the proposed labor shortage by relying on data from the National Science Foundation’s Survey of Earned Doctorates collected between 1997 and 2016. Over the 20 years examined, measurement programs produced 3,124 doctoral graduates, and across this time span, the annual production of graduates nearly doubled. This supply expansion can largely be attributed to the increase in the number of international graduates, which outpaced the annual growth rate of domestic PhD recipients by 156%. Moreover, 85% of graduates were found to either self-identify as White or Asian. Less than 10 Hispanic and no more than 20 Black graduates were produced in any of the years examined. Of the 76% of graduates that reported having a job offer or accepted a position upon graduation, most entered the academy despite the overall average starting salary ($59,484) being considerably lower than the starting salary for their counterparts entering industry ($84,918), government ($69,970), or other educational institutions ($81,428).
Duration of static GPS measurements and it’s influence on the coordinates accuracy
Authors: Borowski Łukasz
Published: September 2020

The author of the paper presents the results of the research concerning the influence of the duration of observation session on coordinates accuracy in static GPS measurements. The 1-, 2-, 4- and 8-hour measurements were made for 19 and 26 km vectors. Satellite observations gathered by ASG-EUPOS system were used to the analyses.
Hydrophobic coatings based on SiO2
Authors: Porębska Katarzyna
Published: September 2020

The method of conversion, properties and usage of hydrophobic coatings on the bases of silicon dioxide is presented in the article. These layers are formed by use the silanes which are not react with water. What is more, these layers could provide not only great resistance to the effect of water molecules, but also better resistance to the effect of abrasive action and hardness as well as keeping the top stair of the transparency. Uncomplicated methods such as zol-zel are used to settling these layers. There are methods of putting on the various surfaces, without necessity of usage specific and sophisticated technological solutions. As a transparent and simple to keep in the cleanness surfaces these layers found application in various field such as sport, motorization, building industry, optical system whether in our houses.
An analysis of fracture toughness, at third mode fracture in concretes containing fly-ash additives
Authors: Golewski Grzegorz
Published: September 2020

This paper presents the results of fracture toughness tests of concrete with fly ash (FA), specified at the third model fracture. Concrete composites with the additives of 0%, 20% and 30% siliceous FA were analysed. Fracture toughness tests were performed on axial torsion machine MTS 809 Axial/Torsional Test System, using the cylindrical specimens with dimensions of 150/300 mm, with a circumferential notch made in the half-height of cylinders. The studies examined effect of FA additive on the parameter KIIIc. The Analysis of the results revealed that a 20% FA additive causes increase in KIIIc, while a 30% FA additive causes decrease in fracture toughness.
Reuse of ceramic sanitary waste as an aggregate in concrete resistant to high temperature
Authors: Halicka Anna , Ogrodnik Paweł , Zegardło Bartosz
Published: September 2020

In this paper the studies on reuse of ceramic sanitary ware wastes as aggregate in the concrete resistant to high temperatures are presented. Concrete specimens containing alumina cement and crushed sanitary ceramic wastes as an aggregate were heated in 1000oC. It was found that after heating, these specimens preserved their shape and cohesion, and showed no cracks and defects. In contrast, specimens of concrete with alumina cement and traditional aggregate (granite and gravel) after heating were cracked and damaged. Despite some decrease in strength after heating, specimens with sanitary ceramic wastes continued to display high compressive strength and tensile strength.
The influence of zeolites on hydration process of mineral binders
Authors: Małolepszy Jan , Grabowska Ewelina
Published: September 2020

This paper presents the results of physical and chemical properties of zeolite - clinoptilolite (Z), on the basis of which its usefulness in different terms and applications was assessed. Same pozzolan was also investigated and analyzed in term of the changes that it causes in the system pozzolan - cement – lime - sand  - water with different content of ingredients. In order to identify the hydration products in the natural conditions, infusion (80ºC) and autoclaving (180°C) XRD, DTA / TG and SEM was used. The results indicate that clinoptilolite is characterized by moderate pozzolanic activity and can be successfully used as a pozzolanic additive for cement, and a binder in the production of aerated concrete.
Results of concrete absorption test related to some particular factors
Authors: Wawrzeńczyk Jerzy
Published: September 2020

In spite of the fact that common concrete absorption tests are technically simple, the correctness of received  results is still very disputable. The lack of unequivocal procedures makes it impossible to compare the results obtained in various laboratories. The paper presents the research results  received in 5 series of concrete  with three different cements and various w/c ratios. The investigations were conducted on cube specimens with dimensions of 10cm and 15cm, all cubes were soaked and dryed in long terms. The object of the research was to identify the effect of  specimens dimensions and soaking time on the concrete absorption. Soaking time applied to investigations vastly exeeds the common soaking time described in standards concerning precast concrete elements.
New chances given to historic buildings by implementing revitalisation projects and adapting the premises to serve new functions
Authors: Wrana Jan , Jarocka-Mikrut Aleksandra
Published: September 2020

The article concerns the issue of revitalizing historical buildings by assigning new functions to them. The authors of the writing provide examples of constantly dilapidating edifices in Lublin and their brief historical outlines. Basing on the expert’s report concerning Sobiescy Palace in Lublin, the writers present problems resulting from the technical condition of this as well as other historical buildings. Chances for improving the conditions of such properties by including them in a completely new functional programme are seen by authors. In order to support this thesis, the writers present already implemented revitalization projects in Poland by assigning various new ones, e.g. living and public utility functions to the buildings.
Engineering modelling of structural details of a bridge
Authors: Pradelok Stefan , Bętkowski Piotr , Rudzik Adam , Łaziński Piotr
Published: September 2020

This paper presents a method of engineering modelling of structural details, which enables the analysis of local static and dynamic effects in a complex structure with the use of a personal computer. An analysed structural detail, modelled with the use of shell finite elements, is mounted to a spatial truss member system. Then, on the basis of prepared computational model, a static or dynamic analysis is carried out. The proposed model allows to detect the local effects in a theoretical. Conducted analyses confirmed the correct operation of such a computational model. Hence, the method of modelling presented in this paper allows to analyse the local effects on ordinary personal computer and more importantly, the results of such calculations are available within a relatively short period of time. The calculations are carried out by analysing the local effects in a steel node of the truss railway bridge.
Investigations of dynamic characteristics of a tall industrial chimney due to light wind and solar radiation
Authors: Breuer Peter , Chmielewski Tadeusz , Górski Piotr , Konopka Eduard , Tarczyński Lesław
Published: September 2020

The present paper describes field tests conducted on the 300 m tall industrial chimney, located in the power station of Bełchatów (Poland), where the GPS rover receivers were installed at three various levels. The objectives of these GPS tests were to investigate the deformed vertical profile of this chimney, and its dynamic characteristics, i.e. the first natural frequency and the modal damping ratios. The results for the satellite signal receptions, the synopsis of recorded baselines and their ambiguity solutions, drifts of the chimney due to solar radiation and air temperature variations and dynamic wind response characteristics are presented.
The evaluation of uncertainty in the resistance models of reinforced concrete members
Authors: Woliński Szczepan
Published: September 2020

The paper presents the analysis and evaluation methods of uncertainty in the resistance models of reinforced concrete members. The first method is based on a standardized procedure for the calibration of resistance models given in the Eurocode. The second method is an original proposal for the evaluation of uncertainty in the resistance models using the available test data on resistance variation. According to the concept of semi-probabilistic partial factors design, the partial factor resulting from model uncertainty,  separated from the factor of resistance, represents a measure of model uncertainty. The approach to model uncertainty evaluation is demonstrated with the use two different sample models for shear capacity assessment of reinforced concrete beams.
СУМІЩЕННЯ МЕТОДІВ АНАЛІЗУ ТА ФОРМУВАННЯ ПОРТФЕЛЮ ПРОДУКЦІЇ ПІДПРИЄМСТВА
Authors: Бутенко Олена
Published: September 2020

Питання вибору методів аналізу та формування товарного портфеля підприємства залишається актуальним через необхідність постійного його оновлення та зміну портфеля продукції для отримання конкурентних переваг на ринку. Використання лише одного обраного методу не може забезпечити повне виконання завдань із аналізу внутрішнього асортименту, проведення оцінки зовнішнього асортименту, узгодження внутрішніх можливостей із потребами споживачів. Методи, які є в основі прийняття рішення про формування портфелю підприємства повинні постійно переглядатись та вдосконалюватися і потребують компенсації недостатньої оцінки зовнішнього асортименту іншими методами формування маркетингової політики підприємства через складність отримання релевантної та достовірної інформації. У представленій роботі автори надають результати виконаного дослідження з практики аналізу та формування товарного портфеля підприємства. Дослідження виконано з метою встановлення результатів які досягаються у разі використання різних методів аналізу портфеля продукції, виконана спроба суміщення методів BCG, АВС-аналізу та XYZ-аналізу для розробки пропозицій із формування товарної політики підприємства. Досліджені завдання методів BCG, АВС-аналізу та XYZ-аналізу, а також виокремлені їх переваги та недоліки; виконано комплексний аналіз матеріальних потоків конкретного підприємства методами АВС – аналізу, XYZ – аналізу та суміщення цих методів; проведено аналіз товарного асортименту за допомогою матриці BCG; розроблені критерії визначення відмінностей у результатах аналізів АВС/XYZ та портфельного аналізу за допомогою матриці BCG та встановлені відмінності за результатами аналізу діяльності конкретного торговельного підприємства; виконане суміщення рекомендацій для формування асортименту підприємства.
3D Quantum-inspired Self-supervised Tensor Network for Volumetric Segmentation of Medical Images
Authors: Konar Debanjan , Bhattacharyya Siddhartha , Gandhi Tapan Kumar , Panigrahi Bijaya Ketan , Jiang Richard
Published: September 2020

This paper introduces a novel shallow 3D self-supervised tensor neural network for volumetric segmentation of medical images with merits of obviating training and supervision. The proposed network is referred to as 3D Quantum-inspired Self-supervised Tensor Neural Network (3D-QNet). The underlying architecture of 3D-QNet is composed of a trinity of volumetric layers viz. input, intermediate and output layers inter-connected using an S-connected third-order neighborhood-based topology for voxel-wise processing of 3D medical image data suitable for semantic segmentation. Each of the volumetric layers contains quantum neurons designated by qubits or quantum bits. The incorporation of tensor decomposition in quantum formalism leads to faster convergence of the network operations to preclude the inherent slow convergence problems faced by the classical supervised and self-supervised networks. The segmented volumes are obtained once the network converges. The suggested 3D-QNet is tailored and tested on the BRATS 2019 Brain MR image data set and Liver Tumor Segmentation Challenge (LiTS17) data set extensively in our experiments. 3D-QNet has achieved promising dice similarity as compared to the intensively supervised convolutional network-based models like 3D-UNet, Vox-ResNet, DRINet, and 3D-ESPNet, showing a potential advantage of our self-supervised shallow network on facilitating semantic segmentation.
HPC as a service: A naive Model
Authors: Imran Hamza Ali
Published: September 2020

Applications like Big Data, Machine Learning,
Deep Learning and even other Engineering and Scientific
research requires a lot of computing power; making
High-Performance Computing (HPC) an important field. But
access to Supercomputers is out of range from the majority.
Nowadays Supercomputers are actually clusters of computers
usually made-up of commodity hardware. Such clusters are
called Beowulf Clusters. The history of which goes back to 1994
when NASA built a Supercomputer by creating a cluster of
commodity hardware. In recent times a lot of effort has been
done in making HPC Clusters of even single board computers
(SBCs). Although the creation of clusters of commodity
hardware is possible but is a cumbersome task. Moreover, the
maintenance of such systems is also difficult and requires
special expertise and time. The concept of cloud is to provide
on-demand resources that can be services, platform or even
infrastructure and this is done by sharing a big resource pool.
Cloud computing has resolved problems like maintenance of
hardware and requirement of having expertise in networking
etc. An effort is made of bringing concepts from cloud
computing to HPC in order to get benefits of cloud. The main
target is to create a system which can develop a capability of
providing computing power as a service which to further be
referred to as Supercomputer as a service. A prototype was
made using Raspberry Pi (RPi) 3B and 3B+ Single Board
Computers. The reason for using RPi boards was increasing
popularity of ARM processors in the field of HPC
Tomografia e angiotomografia computadorizada post mortem (tcpm e atcpm): revisão de literatura
Authors: Outi Baroni Carina , Ferrante Bruno , Brandão de Campos Fonseca Pinto Ana Carolina
Published: September 2020

A descoberta dos raios-X por Wilhelm Roentgen em 1895 originou o campo da radiologia. O emprego de radiografias para o estudo em cadáveres foi introduzido em 1898 e utilizado durante décadas por patologistas. A virtopsia consiste na utilização de modalidades de imagem, tais como tomografia e angiotomografia computadorizada; ressonância magnética e técnicas minimamente invasivas como método complementar, triagem ou até mesmo substituição de autopsias convencionais. Em Medicina Veterinária, poucos artigos foram publicados a respeito e, portanto, apresenta uma perspectiva de estudos inovadores sobre o tema. Esta revisão de literatura tem por objetivo apresentar o cenário da tomografia e angiotomografia computadorizadas post mortem na Medicina e na Medicina Veterinária, contribuindo para a literatura sobre essa nova modalidade de interação entre o diagnóstico por imagem e a patologia.
Fatores relacionados ao diabetes mellitus que podem influenciar no autocuidado
Authors: Salomão Souza Nágila Maria , Cunha Amanda Cristina , De Rezende e Silva Fernanda Marcelino , Nogueira Quadros Karla Amaral , Consolação dos Santos Regina , Nunes Andrade Silmara
Published: September 2020

Objectives: To identify the profile of individuals older than 18 years of age, with type 1 and type 2 Diabetes Meliitus (DM), of both sexes followed in the FHS of the rural area of the city of Divinópolis-MG and the types of self-care performed. Method: Descriptive, quantitative study using an adapted instrument and the Diabetes Self-Care Activities Questionnaire. Results: Among the 107 interviewees, 42.1% are over 65 years of age, 62.6% are female, with the same percentage for individuals who have incomplete elementary education and are married, 65.4% have another health problem, being 58.7% Hypertension. In the identification of self-care, responses to "medication" (96.3%) were more prevalent, as opposed to "physical activity" (18.7%), which had a lower prevalence. Conclusion: the research shows that people adhere more to medication treatment than changes in lifestyle.
Prevalência da hipertensão arterial sistêmica em crianças da rede pública estadual de ensino de Carmo do Cajuru-MG
Authors: Da Silva Valéria Aparecida , Nogueira Rabelo Tatiane , De Rezende e Silva Fernanda Marcelino , Nogueira Quadros Karla Amaral , Consolação dos Santos Regina , Nunes Andrade Silmara
Published: September 2020

Objetivo: Analisar estudantes dos sextos anos das escolas públicas estaduais do municí­pio de Carmo do Cajuru/MG com o intuito de identificar aqueles com predisposição e prevalência í  Hipertensão Arterial Sistêmica. Método: Pesquisa quantitativa, descritiva, de delineamento transversal. Foi utilizado questionário estruturado destinados aos pais ou responsáveis legais pelas crianças, bem como a realização de medidas antropométricas e aferição da pressão arterial. As variáveis de interesse foram analisadas e apresentadas utilizando a estatí­stica descritiva, média, frequência absoluta e porcentagem. Resultados: A amostra estudada contou com a participação de 119 (64 meninas e 53 meninos) das quais 65,5% com 11 anos e 33,9% com 12 anos. Com relação í  média da pressão arterial 100% dos meninos e 93,7% das meninas dispuseram dentro dos limites normais. Conclusão: A partir da realização deste estudo, vemos que se fazem necessárias reflexões sobre agentes considerados como fatores de risco para o desenvolvimento da hipertensão.
Conhecimento dos educadores dos centros municipais de educação infantil sobre primeiros socorros
Authors: Fernandes Souza Monaliza , Beirigo Divino Alessandra , Silva Souza Débora Aparecida , Silva Cunha Simone Graziele , Souza de Almeida Camila
Published: September 2020

Objetivo: Compreender o conhecimento dos professores dos Centros de Educação Infantil sobre Primeiros Socorros referentes a crianças de 3 a 5 anos. Métodos: Trata-se de uma pesquisa de caráter exploratório, com abordagem qualitativa, desenvolvida com 18 professores de nove Centros Municipal de Educação Infantil de Divinópolis, localizado no municí­pio de Divinópolis, Minas Gerais. Foram realizadas entrevistas individuais no perí­odo de julho a dezembro de 2018, por meio de roteiro semiestruturo, posteriormente os dados foram analisados mediante a Análise de Conteúdo. Resultados: Emergiram três categorias temáticas: O professor do CMEI e sua relação com primeiros socorros: conceitos e suas inseguranças; Primeiros socorros durante acidentes no CMEI: atitudes corretas e incorretas e Educação Infantil: tipos de acidentes e exposições a riscos. Conclusão: É necessário que os professores tenham capacitações periódicas sobre o assunto, assim como os locais de trabalho ofertem material e suporte para os primeiros socorros.
Misinformation more likely to use non-specific authority references: Twitter analysis of two COVID-19 myths
Authors: McGlynn Joseph , Baryshevtsev Maxim , Dayton Zane A.
Published: September 2020

This research examines the content, timing, and spread of COVID-19 misinformation and subsequent debunking efforts for two COVID-19 myths. COVID-19 misinformation tweets included more non-specific authority references (e.g., “Taiwanese experts”, “a doctor friend”), while debunking tweets included more specific and verifiable authority references (e.g., the CDC, the World Health Organization, Snopes). Findings illustrate a delayed debunking response to COVID-19 misinformation, as it took seven days for debunking tweets to match the quantity of misinformation tweets. The use of non-specific authority references in tweets was associated with decreased tweet engagement, suggesting the importance of citing specific sources when refuting health misinformation.
Delay Colouring in Quartic Graphs
Authors: Edwards Katherine , Kennedy W. Sean
Published: September 2020

Haxell, Wilfong, and Winkler conjectured that every bipartite graph with maximum degree $\Delta$ is $(\Delta + 1)$-delay-colourable. We prove this conjecture in the special case $\Delta = 4$.
A Dirac-type Theorem for Berge Cycles in Random Hypergraphs
Authors: Clemens Dennis , Ehrenmüller Julia , Person Yury
Published: September 2020

A Hamilton Berge cycle of a hypergraph on $n$ vertices is an alternating sequence $(v_1, e_1, v_2, \ldots, v_n, e_n)$ of distinct vertices $v_1, \ldots, v_n$ and distinct hyperedges $e_1, \ldots, e_n$ such that $\{v_1,v_n\}\subseteq e_n$ and $\{v_i, v_{i+1}\} \subseteq e_i$ for every $i\in [n-1]$. We prove the following Dirac-type theorem about Berge cycles in the binomial random $r$-uniform hypergraph $H^{(r)}(n,p)$: for every integer $r \geq 3$, every real $\gamma>0$ and $p \geq \frac{\ln^{17r} n}{n^{r-1}}$ asymptotically almost surely,  every spanning subgraph $H \subseteq H^{(r)}(n,p)$ with  minimum vertex degree $\delta_1(H) \geq \left(\frac{1}{2^{r-1}} + \gamma\right) p \binom{n}{r-1}$ contains a Hamilton Berge cycle. The minimum degree condition is asymptotically tight and the bound on $p$ is optimal up to some polylogarithmic factor.
Edge-Distinguishing of Star-Free Graphs
Authors: Gorzkowska Aleksandra , Kargul Ernest , Musiał Szymon , Pal Katarzyna
Published: September 2020

The distinguishing index $D'(G)$ of a graph $G$ is the least number $k$ such that $G$ has an edge colouring with $k$ colours that is only preserved by the trivial automorphism. Pilśniak proved that a connected, claw-free graph has the distingushing index at most three. In this paper, we show that the distingushing index of a connected, claw-free graph with at least six vertices is bounded from above by two. We also consider more general graphs in this sense. Namely, we prove that if $G$ is a connected, $K_{1,s}$-free graph of order at least six, then $D'(G) \leq s-1$.
A Degree Sequence Version of the Kühn–Osthus Tiling Theorem
Authors: Hyde Joseph , Treglown Andrew
Published: September 2020

A fundamental result of Kühn and Osthus [The minimum degree threshold for perfect graph packings, Combinatorica, 2009] determines up to an additive constant the minimum degree threshold that forces a graph to contain a perfect $H$-tiling. We prove a degree sequence version of this result which allows for a significant number of vertices to have lower degree.
A Recursive Construction for Skew Hadamard Difference Sets
Authors: Momihara Koji
Published: September 2020

A major conjecture on the existence of abelian skew Hadamard difference sets is: if an abelian group $G$ contains a skew Hadamard difference set, then $G$ must be elementary abelian. This conjecture remains open in general. In this paper, we give a recursive construction for skew Hadamard difference sets in abelian (not necessarily elementary abelian) groups. The new construction can be considered as a result on the aforementioned conjecture: if there exists a counterexample to the conjecture, then there exist infinitely many counterexamples to it.
A Bijective Proof of the ASM Theorem, Part I: The Operator Formula
Authors: Fischer Ilse , Konvalinka Matjaž
Published: September 2020

Alternating sign matrices are known to be equinumerous with descending plane partitions, totally symmetric self-complementary plane partitions and alternating sign triangles, but no bijective proof for any of these equivalences has been found so far. In this paper we provide the first bijective proof of the operator formula for monotone triangles, which has been the main tool for several non-combinatorial proofs of such equivalences. In this proof, signed sets and sijections (signed bijections) play a fundamental role.
Grossberg–Karshon Twisted Cubes and Hesitant Jumping Walk Avoidance
Authors: Lee Eunjeong
Published: September 2020

Let $G$ be a complex simply-laced semisimple algebraic group of rank $r$ and $B$ a Borel subgroup. Let $\mathbf i \in [r]^n$ be a word and let $\boldsymbol{\ell} = (\ell_1,\dots,\ell_n)$ be a sequence of non-negative integers. Grossberg and Karshon introduced a virtual lattice polytope associated to $\mathbf i$ and $\boldsymbol{\ell}$ called a twisted cube, whose lattice points encode the character of a $B$-representation. More precisely, lattice points in the twisted cube, counted with sign according to a certain density function, yields the character of the generalized Demazure module determined by $\mathbf i$ and $\boldsymbol{\ell}$. In recent work, the author and Harada described precisely when the Grossberg–Karshon twisted cube is untwisted, i.e., the twisted cube is a closed convex polytope, in the situation when the integer sequence $\boldsymbol{\ell}$ comes from a weight $\lambda$ of $G$. However, not every integer sequence $\boldsymbol{\ell}$ comes from a weight of $G$. In the present paper, we interpret the untwistedness of Grossberg–Karshon twisted cubes associated with any word $\mathbf i$ and any integer sequence $\boldsymbol{\ell}$ using the combinatorics of $\mathbf i$ and $\boldsymbol{\ell}$. Indeed, we prove that the Grossberg–Karshon twisted cube is untwisted precisely when $\mathbf i$ is hesitant-jumping-$\boldsymbol{\ell}$-walk-avoiding.