bluuebunny/crossref_metadata_2025_split huggingface dataset:
Determination of Axial Capacity for Enhanced Normal and Ultra - High Performance Concrete Columns
Authors: Abdulqader Sarmad Shafeeq , Ahmed Asmaa Ali , Ahmed Nawfal Shihab 
Published: May 2021

Abstract
Concrete Technology has been developing for more than a century. One of the most exceptional achievements in concrete technology is the evolving of Ultra-High Performance Concrete (UHPC) which has been a research focus in a wide applications diversity. In this paper, an experimental work has been carried out for investigating the transverse and longitudinal reinforcements’ variation influence on the axial capacity of UHPC columns. Eight columns (five UHPC columns and three Normal Strength Concrete (NSC) columns) have been poured and tested under a concentric axial compression load till a failure is reached. Then, the results are reported herein. The experimental results show that UHPC columns failed in a controlled manner and no concrete chips or a concrete cover spalling are observed. Also, the longitudinal reinforcements have not buckled away beyond the peak load because of the presence of the reinforcing steel fibers in UHPC. Correspondingly, the steel ties spacing proportionally affects the load carrying capacity of columns as presented hereinafter.
Measuring the Influence of Communication Planning Towards Construction Project Performance
Authors: Setiawan Andre Feliks , Hansen Seng , Fujiono Antonius 
Published: May 2021

Abstract
Effective communication is necessary for the success of construction project performance. Due to its nature, effective communication is required to coordinate all parties involved in construction projects such as owners, project managers, engineers, subcontractors, etc. Few previous studies have addressed the issues of construction project communication, particularly in the communication planning stage. This paper aimed to investigate how far the communication planning has been effectively implemented in several construction projects in Jakarta and measure how big the influence to project performance. It adopts a quantitative method by distributing questionnaire surveys to contractors and consultants in Jakarta. Descriptive statistics were used to analyse the data which presents that communication planning has been implemented by 78.02 % of the responses and significantly impact the project performances. This paper offers useful implications for practitioners on how construction project teams (from contractors and consultants) should carefully manage the communication process particularly during its planning stage.
Experimental Tests of Fiber-Reinforced Concrete Slabs and Comparison of Deformations Using 3D Graphs
Authors: Čajka Radim , Marcalíková Zuzana 
Published: May 2021

Abstract
The presented article deals with experimental testing of fiber-reinforced concrete slabs using a specialized testing device, the so-called Stand. The experimental testing involved a total of three slabs with different fiber dosing. Dosing was chosen of 25, 50, and 75 kg/m3. In the case of fiber dosing of 75 kg/m3, the concrete recipe was changed with regard of fiber dosing. The test equipment allows vertical loading of the elements and, together with the installed track sensors and computer technology, records the vertical deformations. The deformation of the slabs was evaluated using 2D deformation sections in the slabs of mounted sensors and using 3D deformation sections with the use of interpolation of intermediate values. The article is supplemented by a test evaluation of the mechanical properties. These were concrete compressive strength, modulus of elasticity, and tensile strength. The mechanical properties were also tested and evaluated for plain concrete (dosage 0 kg/m3). By evaluating the mechanical properties and deformations, it is possible to observe differences in the behavior of fiber-reinforced concrete elements for different degrees of fiber reinforcement. The article evaluates the positive effect of fibers on the load capacity and the deformations of slabs.
Investigation of Compressive Strength of Straw Reinforced Unfired Clay Bricks For Sustainable Building Construction
Authors: Dawood Abbas O. , Mussa Faten I. , Khazraji Hayder Al , Ulsada Hussain A. Abd , Yasser Mohammed M. 
Published: May 2021

AbstractThe mud is considered as one of the oldest construction materials in Iraq and is still used in the country regions for farmer’s houses or animal shelters. In Iraq, there are different types of mud constructions, including adobe, unfired bricks and cob. The presented study has focused on unfired clay brick where the clay is the main material. To ensure that the clay is pure and clean, it was excavated from the depth of 2 m below the natural ground level. Different types of unfired clay bricks produced by adding different materials to the clay to improve its properties and especially large deformation due to shrinkage. The added materials are classified into three concepts, the first additives are the natural fibers (straw, sawdust, and rice husk) and they are used to improve the tensile strength of brick and reduce the cracking due to shrinkage. The second additives included added the fine and coarse sand as a stabilizer to reduce the volumetric changes. The third additives are adding cement to increase the adhesive and cohesion of the mud matrix. The measurements included compressive strength of brick, mortar, and masonry and the flexural strength of bricks alone. The behaviour of unfired masonry prisms was also compared to the traditionally fired clay brick prisms. The results indicate that higher compressive strength of bricks was got for the mix that included clay, coarse sand and straw. The maximum flexural strength of bricks was got for the mix that included clay and sawdust, while for unfired masonry prism the higher compressive strength was obtained with a mix that included clay, coarse sand and straw. Finally, a proposed formula to obtain the compressive strength of unfired brick masonry from the compressive strength of brick and mortar is presented.
Analysis of Prestressing in Precast Prestressed Concrete Beams
Authors: Kraľovanec Jakub , Moravčík Martin , Jošt Jozef 
Published: May 2021

Abstract
Knowledge of prestressing force’s value is in the case of prestressed concrete structure the most important basis for defining load-carrying capacity and remaining service life. Numbers of prestressed concrete structures are about to reach their limit of service life and they are exhibiting signs of deterioration due to the conceptional errors, inadequate maintenance and environmental distress. All of these factors negatively influence the actual state of prestressing. Thus, it is essential to determine the value of prestressing force considering the degradation of materials, such as corrosion of prestressing strands or wires. While assessing structure in service, it is difficult to apply magnetoelastic sensors or use other direct methods for determining the state of prestressing. Hence, the indirect methods enable to analytically calculate the prestressing force based on the results of measurement, e.g. strain, stress, deflection, or width of the crack. The present paper focuses on numerical analysis of prestressing in a twosome of precast prestressed concrete beams. For the numerical analysis, two indirect methods are applied, specifically Saw-cut method and Crack initiation method. Finally, the results are discussed and recommendations for the experimental campaign are summarized.
Analysis of Slope Stability
Authors: Harabinová Slávka , Kotrasová Kamila , Kormaníková Eva , Hegedüsová Iveta 
Published: May 2021

Abstract
In the paper the numerical modelling of ensuring slope stability and their analysing with using of different numerical methods are presented. We have designed the cutting walls with earth nails and anchors securing for modelling of slope stability ensuring. The calculate and the mechanism of failure process of the reinforced slopes were studied using the different methods for slope stability. The nailing significantly increased the stability level for using Spencer method. The anchors increased the stability level for using Spencer method. Increasing the nail or anchors length improved the stability of the reinforced slopes. The reinforced slope exhibited a significant the stability level.
Temperature Conditioned Resonance Clusters in Bridges Subjected to Moving Loads
Authors: Tesar Alexander , Melcer Jozef 
Published: May 2021

Abstract
The objective of this study is the analysis of temperature conditioned resonance clusters appearing in scope of dynamic testings of bridges by moving loads. As example is studied the assessment of actual bridge exposed to such forcing. Presented are the results and final conclusions dealing with security and reliability of the structure.
Heuristic comparative assessment of non-conventional warehouse designs
Authors: Esmero Antonio T. , Branzuela Queenie Rose S. , Paypa Jessilyn T. , Rojo Sharmaine Myka S. , Sacay Eduardo S. , Selerio Egberto F. , Ocampo Lanndon A. 
Published: May 2021

Abstract
In the unit-load warehouse (UW) design, the aisle design problem dealing with storage space layout is the first among the three main problems. Several conventional and non-conventional designs have been proposed in the literature. In general, the assessment of UW designs is commonly carried out using analytical approaches. However, such an approach may be inadequate due to assumptions or approximations, making results unrealistic. Aiming to bridge this gap, this research develops an assessment framework that employs the FlexSim software for simulating the conventional, Flying-V and Fishbone designs based on a real case from a Philippine manufacturing company. Using a computer simulation, this research investigates factors not yet tractable with present analytical methods. The factors employed for the comparative assessment are “picking run-time”, “travel distance”, and “capacity”. The results suggest that the Fishbone design provides the most advantage compared to the Flying-V and other conventional designs. With the proposed Fishbone design, the company is expected to save, on average, 52.39% of picking run-time, 32.25% travel distance, and increase storage capacity by 7.5%. The research findings are compared to previous studies based on analytical approaches.
Comparing bottom-up and top-down ratings for individual soccer players
Authors: Hvattum Lars Magnus , Gelade Garry A. 
Published: May 2021

Abstract
Correctly assessing the contributions of an individual player in a team sport is challenging. However, an ability to better evaluate each player can translate into improved team performance, through better recruitment or team selection decisions. Two main ideas have emerged for using data to evaluate players: Top-down ratings observe the performance of the team as a whole and then distribute credit for this performance onto the players involved. Bottom-up ratings assign a value to each action performed, and then evaluate a player based on the sum of values for actions performed by that player. This paper compares a variant of plus-minus ratings, which is a top-down rating, and a bottom-up rating based on valuing actions by estimating probabilities. The reliability of ratings is measured by whether similar ratings are produced when using different data sets, while the validity of ratings is evaluated through the quality of match outcome forecasts generated when the ratings are used as predictor variables. The results indicate that the plus-minus ratings perform better than the bottom-up ratings with respect to the reliability and validity measures chosen and that plus-minus ratings have certain advantages that may be difficult to replicate in bottom-up ratings.
Exploring the Overrepresentation of Black Male Students in Special Education: Causes and Recommendations
Authors: Delahunty Michael , Chiu Calli Lewis 
Published: May 2021

AbstractAn overrepresentation of Black male students identified as having disabilities is pervasive in American schools. This troubling reality may be the result of disconnects between Black males and their White teachers. Racial differences likely contribute to the high number of Black males referred for programs for students with disabilities. This paper explores the overrepresentation of Black male students identified as having disabilities and recommendations for supporting their success.
Gender, Productive Resources and Agricultural Development in the Urban Area
Authors: Olufemi Damilola Blessing , Adejumo Olusola Joseph 
Published: May 2021

Abstract
The Nigerian society is a patriarchy society where men dominate over women most especially in access and control over productive resources and decision-making process. This limitation often has negative impacts on food security; most especially in urban areas where more than half of the world’s population now dwells. This study aimed at documenting the experiences of urban women farmers in accessing critical agricultural productive resources. The study engaged both quantitative and qualitative methods in designing the research. Multistage sampling technique was used to select 250 respondents, and information was elicited through the use of questionnaire, Key Informant Interview (KII), and Focus Group Discussion (FGD). The study revealed that the urban female farmers in the study area have inadequate access to critical agricultural productive resources and are still making use of crude and traditional implements in their various agricultural activities. Likewise, through usufructuary rights, in reference to access to land the urban status quo is gradually weakening the patriarchal nature of the society.
Inherited Thrombophilias in Thrombosis Advancement in Microvascular Flap Surgery
Authors: Ozoliņa Agnese , Vanags Indulis , Drizlionoka Karina , Ņikitina-Zaķe Liene , Mamaja Biruta 
Published: May 2021

Abstract
Microvascular flap surgery is a reliable method for reconstructive surgery. To avoid and foresee free flap thrombosis advancement after microvascular flap surgery, patient assessment, flawless surgical technique, and eligible perioperative care are pivotal. In this prospective observational study, we aimed to elucidate the most common inherited single nucleotide polymorphisms (SNPs) attributable to free flap thrombosis. A total of 152 patients undergoing microvascular flap surgery during the study period of 2016–2019 were analysed for five SNPs: rs6025 in Factor V Leiden (FVL) gene, rs1799963 in Factor II (FII) gene, rs2066865 in Fibrinogen Gamma Chain gene (FGG), rs2227589 in SERPINC 1 gene and rs1801133 in Methylene Tetrahydrofolate Reductase (MTHFR) gene. Activated protein C resistance (aPCR), prothrombin, antithrombin (AT), fibrinogen and homocysteine plasma levels were measured to determine association with the analysed SNPs and with free flap thrombosis advancement. Our preliminary results show that carriers of FVL mutation were associated with aPCR, as we observed significantly lower aPCR plasma levels in carriers of genotype C/T, as compared to C/C; p = 0.006 (CI 95%, 0.44 to 1.19). Additionally, mean fibrinogen plasma levels were higher in carriers of FGC gene rs2066865 genotype A/A (5.6 ± 1.81 g/l), as compared to G/A and G/G; p = 0.04 (CI 95%, 0.007 to 1.09); p = 0.004 (CI 95%, 0.48 to 2.49), respectively. The study group included 12 patients (7.9%) with free flap thrombosis. For one patient free flap thrombosis advancement might have been related to the rs6025T – FVL mutation with a PCR plasma level 1.21. Lower aPCR levels was associated with carriers of FVL rs6025 C/T and higher fibrinogen plasma levels with carriers of FGG rs2066865 A/A, suggesting that these genotypes might predict higher free flap thrombosis risk, but we found no significant association between analysed SNPs and free flap thrombosis advancement.
Manganese metabolism in the body of lactating fat-tailed ewes and the rate of need for it
Authors: Gayirbegov Djunaidi  Sharamazanovich , Arilov Anatoliy Nimeevich , Mandjiev Dmitry  Borisovich , Gibalkina Nadezhda Ivanovna , Groza Elena Viktorovna 
Published: May 2021

We studied the exchange of manganese in the body of lactating ewes of the Kalmyk breed. It was found out that during lactation, the intensity of metabolism of this element in the body of ewes of the meat-feeding direction of productivity significantly increases. The factorial method, taking into account endogenous losses, determined the daily requirement of fat-tailed ewes in manganese.
Data Mining Techniques for Pandemic Outbreak in Healthcare
Authors: Abdul Satar Nur Izyan Suraya , Mohamed Azlinah , Ali Azliza Mohd 
Published: May 2021

Pandemic outbreaks such as SARS-CoV, MERS-CoV and Covid-19 have attracted worldwide attention since these viruses have affected many countries and become a global public health issue. In 2019, Covid-19 was announced as a pandemic disease and categorized as a public health emergency globally. It is ranked as the sixth most serious pandemic internationally. This pandemic tracking and analysis require an appropriate method that gives better performance in terms of accuracy, precision and recall that defines its pattern since it involves huge and complicated datasets from the pandemic. Pattern identification is currently applied in many instances due to the rapid growth of data besides having theÂ Â potential to generate a knowledge-rich environment which can help to significantly improve the quality of clinical decisions and identify the relationships between data items. Therefore, there is a need to review the techniques in data mining on the pandemic outbreak that focuses on healthcare. The goal of this study was to analyze the algorithms from the data mining method that had been implemented for pandemic outbreaks in past research such as SARS-CoV, MERS-CoV and Covid-19. The result shows that 2 main algorithms, namely NaÃ¯ve Bayes and Decision Tree, from the classification method, are appropriate algorithms and give more than 90% accuracy in both the pandemic and healthcare. This will be further considered and investigated for future analysis on large datasets of Covid-19 which can help researchers and healthcare practitioners in controlling the infection of the coronavirus using the data mining technique discussed.
Blizna po solidarności. Polski ruch antyłowiecki w świetle tradycji XIX‑wiecznej ekologii i praktyki nieposłuszeństwa obywatelskiego
Authors: Morska Izabela 
Published: May 2021

Spór pomiędzy zwolennikami myślistwa oraz jego przeciwnikami z jesieni 2019 i zimy 2020 roku dotyczył zarządzania dobrami publicznymi. Jego rozwój przybrał kształt swego rodzaju manewrów wojennych, które wraz z kumulowaniem się kolejnych zakazów mogły przekształcić się w replikę wojny domowej. Przeszkodził temu rozwój pandemii. Tym samym ruch antyłowiecki, zdobywający sobie coraz większą popularność wśród ludzi, dla których leśne spacery stały się pierwszym w życiu doświadczeniem aktywizmu, praktycznie przestał istnieć. Czy był zatem obcym implantem, jak sugerowały głosy mu przeciwne? Autorka tego eseju zakłada, że ruch antymyśliwski był projektem zarówno altruistycznym, jak i edukacyjnym, który za podstawę postawił sobie solidarność i empatię oraz gotowość do poświęceń na rzecz innych, w tym wypadku – leśnych zwierząt, do których strzela się metonimicznie, w zastępstwie obywateli praktykujących nieposłuszeństwo obywatelskie, z którymi wciąż nie wypada prowadzić otwartej wojny.
Comparative study of the elemental composition in raw materials of plants of genus Geum L.
Authors: Козира С. А. , Гонтова Т. М. , Степанова С. І. , Гапоненко В. П. , Машталер В. В. , Романова С. В. 
Published: May 2021

Among the relevant for the modern pharmacy problems, there is a need for the rational complex use of known medicinal plants, as well as the search for new sources of natural biologically active compounds in order to expand the list of official medicinal plants and raw material base. Species of genus Geum L. contain a number of biological active substances and are promising sources of raw materials for the production of antimicrobial, astringent, anti-inflammatory, and hemostatic medicines. Pharmacological activity of these plants results from their multi-component chemical composition, including tannins, flavonoids, macro- and microelements and other compounds.
The aim of thе study was to compare the elemental composition of herb and rhizomes with roots of G. urbanum L., G. aleppicum Jacq. and G. rivale L. of Ukrainian flora.
The objects of the study were the samples of herb and rhizome with roots of G. urbanum L., G. aleppicum Jacq. and G. rivale L. (dried raw materials) which were collected in the Kharkiv region, Ruski Tishki village, in June-August 2018–2019.
The determination of the qualitative composition and quantitative content of elements was carried out by atomic absorption spectroscopy with atomization in an air-acetylene flame using a spectrometer CAS 120 («Selmi», Sumy, Ukraine).
In the studied samples, 19 elements were determined, including 5 macroelements and 14 microelements. The data about accumulation of elements in investigated herb of G. urbanum L., G. aleppicum Jacq., G. rivale L. can be arranged in descending order as follows: K > Ca > Si > Mg > P > Fe > Al > Na > Sr > Zn, and in rhizomes with roots as follows – K > Si > Ca > Mg > Fe > P > Al > Na > Sr > Zn. The content of toxic elements such as cobalt, cadmium, arsenic, and mercury was within the permissible limits for plant raw materials and food.
For the first time, a comparative study of the macro- and microelement composition in herb and rhizomes with roots of G. urbanum L., G. aleppicum Jacq. and G. rivale L. has been carried out. Using the method of atomic absorption spectral analysis, 19 elements have been identified and their content has been determined, among which К, Ca, Mg, Si, P, Fe, Al, Na, Mn, Zn predominantly accumulate.