bluuebunny/crossref_metadata_2025 huggingface dataset:
Thermistor formation using BaTiO3 powders synthesised by the Pechini method
Authors: Fernández Perdomo Claudia P. , Rodríguez Páez Jorge E.
Published: November 2022

Barium titanate (BaTiO3) is a compound of interest in the field of electroceramics which is widely used in the manufacture of capacitors, piezoelectric transducers and resistive devices having a positive temperature coefficient (PTCR) and in manufacturing pyroelectric and optoelectronic devices. Most of these devices are obtained by consolidating high purity, suitable sized particle ceramic powders; structured synthesis methods are required to ensure such requirements. BaTiO3 powders were synthesised by a polymeric precursor method (Pechini) in this work. Very pure, small particle sized, raw material was obtained. These powders were characterised using thermogravimetric and differential thermal analysis (TGDT), X-ray diffraction (XRD) and differential scanning calorimetry (DSC). The results indicated that samples treated at 650°C presented cubic BaTiO3 as unique crystalline phase. If a sample were treated at 1,100°C, the tetragonal phase having a c/a < 1.007 relationship was the main crystalline phase. Samples treated at 1,100°C showed ferroelectric-paraelectric transition at T ≈ 123°C. BaTiO3 tetragonal ceramic powders were uniaxially pressed and then synthesised at 1,200°C for 2 hours. These samples were electrically characterised. These samples' curves of electrical resistance versus temperature (R-T) showed their PTCR thermistor behaviour. Current-voltage (IV) variation was also measured at different temperatures.
Studying asphalt binder fatigue pattern by using a dynamic shear rheometer
Authors: Reyes Ortiz Oscar Javier , Pérez Jiménez Félix Eduardo
Published: November 2022

This article was aimed at determining fatigue test results regarding different types of binder when using a dynamic shear rheometer (DSR). The tests were carried out in stress conditions at 20°C. The stress input signal was a constant amplitude, 1.59 Hz frequency sine wave. Asphalt binders B-13/22, B-40/50, B-60/70, B-80/00, B-150/200 and BM-3c (modified asphalt) were studied. The test measured strain, complex modulus (G*), dissipated energy and dissipated energy ratio (DER) with the number of cycles. Strain criteria were used for determining binder fatigue failure (DER). Failure was defined as the point at which (DER) dropped 10% after peaking. Laws of asphalt fatigue were obtained from the strain and failure cycle results.
Two-dimensional wood drying stress simulation using control-volume mixed finite element methods (CVFEM)
Authors: Salinas Carlos , Chavez Cristian , Gatica Yerko , Ananias Rubén
Published: November 2022

The work was aimed at simulating two-dimensional wood drying stress using the control-volume finite element method (CVFEM). Stress/strain was modeled by moisture content gradients regarding shrinkage and mechanical sorption in a cross-section of wood. CVFEM was implemented with triangular finite elements and lineal interpolation of the independent variable which were programmed in Fortran 90 language. The model was validated by contrasting results with similar ones available in the specialised literature. The present model's results came from isothermal (20ºC) drying of quaking aspen (Populus tremuloides): two-dimensional distribution of stress/strain and water content, 40, 80, 130, 190 and 260 hour drying time and evolution of normal stress ( -2,5<σxx<1,2, MPa), from the interior to the exterior of wood.
Evaluating protection systems against marine corrosion of aeronautic alloy Alclad 2024-T3
Authors: Aperador Chaparro William , Escobar Mosquera Andres Felipe , Pérez Londoño Fabian Andrés
Published: November 2022

This paper shows how two coating systems were obtained as an alternative for protection against corrosion of al clad 2024-T3which is used in battery compartment manufacture for T-41 aircraft. Such systems consist of three types of organic resin: a first layer of P-115 polyester resin as the first coating on both systems, and a second layer of Hetron 197-3 polyester resin in the first system and vinylester resin in the second one. Scanning electron microscopy (SEM) was used for surface morphology analysis, showing the roughness produced by surface treatment. The coatings were electrochemically characterised by electro chemical impedance spectroscopy (EIS) and Tafel polarization curves; it was found that both systems had good performance against corrosion in a marine environment and the chemical surface preparation system had a superior protective pattern for Alodine5700 + 197-3 Hetron, a 1.42x10-12mpy corrosion rate being obtained while substratum rate was 1.59x10-7 mpy.
Towards a systemic parameterisation of the environmental dimension
Authors: Vega Mora Leonel
Published: November 2022

Information, particularly environmental information, constitutes a valuable asset which is fundamental in formulating, implementing and controlling environmental policy and management aimed at environmental sustainability. The systemic parameterisation of the so-called "environmental dimension" will lead to having enough, top-quality environmental information which has been duly collected, processed and prepared for developing any anthropic activity. The present article synthesizes the results of a research project entitled, "A Systemic Parameterisation of the Environmental Dimension- Phase I," carried out by the Policy, Information and Environmental Management (PIGA) research group; its main objective consisted of producing and proposing a theoretical basis and conceptual and methodological framework for developing such parameterisation.
A survey of repetitive control in varying frequency conditions
Authors: Ramos Fuentes Germán Andrés , Olm Miras Josep , Costa Castelló Ramón
Published: November 2022

Digital repetitive control is a strategy that allows tracking/ rejecting periodic signals. Repetitive controllers are designed assuming that the exogenous signal period is constant and known, its main drawback being the dramatic loss of performance when signal frequency varies. This paper reviews the most relevant proposals advanced for overcoming this problem.
Standardising and validating aromatic profile analysis by an electronic nose
Authors: Zuluaga Carlos Mario , Díaz Amanda Consuelo , Quicazán Martha Cecilia
Published: November 2022

The electronic nose is one of the most innovative techniques which had been used in the analysis of food and other aroma matrices. This device imitates the human olfactory system through sensors which are partially specific for different groups of volatile chemicals and differentiating and classifying food (by involving multivariate statistics) and it is also used for establishing quality and control parameters. Although the technique has been increasingly applied in research and industry, few studies have been published in the scientific literature referring to validating its use as an analytical methodology. This work' s main objective was to standardise and validate the aromatic profile analysis method for differentiating apiculture products: honey, pollen and propolis. Standardisation involved modifying sample preparation and system variables while validation involved analysis of repeatability and intermediate repeatability of the method and establishing its uncertainty. The results showed that it was possible to set suitable operational parameters for each apicultural product while validation data showed that this technique did not reveal significant differences as reliable values were obtained when using this device as an analysis and quality control tool.
Trajectory tracking for robot manipulators using differential flatness
Authors: Veslin Diaz Elkin , Slama Jules , Dutra Max , Lengerke Omar , Morales Tavera Magda
Published: November 2022

This paper proposes applying differential flatness to robot manipulator trajectory tracking. The trajectories for each generalised coordinate are proposed as a function and the corresponding input must be found to guarantee tracking. It is shown that the position in the generalised coordinates and their derivatives are flat inputs which, together with a PD controller, could determine (with some restrictions) manipulator movement having minimal deviation throughout its trajectory in both plane movements and in space.
Electrodermal activity - a review
Authors: Moncada María Elena , De la Cruz Jorge
Published: November 2022

The electricity in living tissue was widely studied around the 19th century. Such study was suspended for many years but has then been started again during recent decades. New research into bioelectricity is creating alternatives in the health field; one of them is an electrodermal response associated with the wound healing, cell stimulation and psychopathology diagnostic. This article presents some of the first responses and models concerning electrodermal activity. Theoretical, clinical and review papers were studied and classified to show the amplitude and variety of bioelectrical responses. Electrodermal activity is only one of many applications having an abundant amount of evidence regarding diagnosis and treatment starting from bioelectrical signals. Electrical tissue response requires more experimental, theoretical and clinical research in many fields involving an organism' s behaviour to ascertain, propose and create new treatment alternatives for different pathologies.
Factores asociados a la mortalidad en pacientes con COVID-19 admitidos en una Unidad de Cuidados Intensivos de Medellín, Colombia. Marzo-diciembre 2020
Authors: Ramírez-Vélez Andrés , Yepes-Gómez David , Pérez-Muñoz Marcela , Zuluaga-García Juan Pablo , Zambrano-Rico Sara , Moreno-Bedoya Sara , Barrios-Arroyave Freddy Andrés
Published: November 2022

Introducción. La COVID-19 se manifiesta en el 80% casos de forma leve, sin embargo, en 5% progresa a enfermedad severa con necesidad de manejo en unidad de cuidados intensivos (UCI).
Objetivo. Identificar los factores demográficos, clínicos y de tratamiento asociados a la mortalidad en pacientes con COVID-19 atendidos en la UCI de un hospital de cuarto nivel de atención de Medellín, Colombia.
Materiales y métodos.  Estudio de cohorte retrospectivo. Se analizaron las historias clínicas de 182 pacientes admitidos en UCI por COVID-19 entre marzo y diciembre de 2020. Se realizaron análisis bivariados (pruebas de chi-cuadrado, exacta de Fisher, t de Student no pareada o U de Mann-Whitney) para evaluar la asociación entre, por un lado, características demográficas, presencia de enfermedades coexistentes, resultados de laboratorios, intervenciones terapéuticas, requerimiento de soporte ventilatorio y hemodinámico, y, por otro, mortalidad. Además, se realizó un análisis multivariado en el que se construyeron regresiones logísticas binarias simples y múltiples, calculando RR crudos y ajustados. Se consideró un nivel de significancia de p<0.05.
Resultados. La mortalidad fue de 47.80%. En el análisis multivariado, los siguientes factores se comportaron como factores protectores: edad <60 años (RRa: 0.154, IC95%:0.059-0.401; p=0.000), uso de vasopresores (RRa 0.082, IC95%:0.021–0.319; p<0.001) y uso de terapia de remplazo renal (RRa: 0.205, IC95%:0.059–0.716; p=0.013). La no realización de traqueostomía se asoció como factor de riesgo (RRa: 14.959, IC95%:4.865-45.998; p<0.001). El conteo más bajo de plaquetas registrado durante la estancia en UCI tuvo un efecto neutro pero fue una variable cuantitativa significativamente asociada (RRa: 0.999, IC95%:0.990-0.999; p=0.003).
Conclusiones. En el presente estudio, tener menos de 60 años, el uso de vasopresores y de terapia de remplazo renal se comportaron como factores protectores, mientras que la no realización de traqueostomía se comportó como factor de riesgo para mortalidad. Además, el conteo más bajo de plaquetas registrado durante la estancia en UCI fue una variable cuantitativa significativamente asociada.
Functional wafer cream fortified with carob molasses pulp flour
Authors: Özdemir Y. , Öncel B. , İlhan S.
Published: November 2022

Wafer cream is an important product used in many foods, especially confectionery products, and consumed with delight. Therefore, nutritional enrichment of this product is of great importance. In this study, a new functional product was developed by adding carob molasses pulp (CMP) flour obtained from carob fruit, which has unique nutritional and bioactive properties, to wafer cream, increasing its nutritional value and antioxidant activity. When 15% CMP flour was added to the wafer cream formulation, there was an increase of approximately 58.43 and 78.77%, respectively, in total polyphenol and antioxidant levels compared to the control group (without CMP flour). In addition, since the product developed is in cocoa colour, consumer preference has increased. It has been determined that phytochemical and nutritive components of the wafer cream increased as a result of the use of carob flour.
Effect of Current Ratio (Cr), Quick Ratio (Qr), Debt To Asset Ratio (Dar) and Debt To Equity Ratio (Der) on Return On Assets (Roa)
Authors: Sari Widya Novita , Novari Eri , Fitri Yuda Septia , Nasution Ade Iskadar
Published: November 2022

This research is motivated by differences in the results of previous studies regarding the Effect of Current Ratio (CR), Quick Ratio (QR), Debt To Asset Ratio (DAR), and Debt To Equity Ratio (DER) on Return On Assets (ROA) in Companies Pharmaceutical Sub-Sector Listed on the Indonesia Stock Exchange for the 2015-2019 Period. This study aims to determine the effect of the Current Ratio (CR), Quick Ratio (QR), Debt To Asset Ratio (DAR), and Debt To Equity Ratio (DER) on Return On Assets (ROA). This study uses several data analyzes, namely descriptive analysis, model selection test, data selection method test (Chow test, Hausman test, and Langrange multiplier test), panel data regression analysis test, hypothesis testing (partial test and simultaneous test), and coefficients. determination by using the Eviews version 10 program. Based on the results of this study, it shows that the measurement results on the Current Ratio (X1) have no significant effect on Return On Assets (Y), Quick Ratio (X2) have no significant effect on Return On Assets (Y), Debt to Assets Ratio (X3) has an effect on Return On Asset (Y), and finally Debt to Equity Ratio (X4) has an effect on Return On Asset (Y).
Cultura y tradición: ¿conceptos trasnochados o de vanguardia?
Authors: Conesa-Lareo María-Dolores
Published: November 2022

Una generación ha renunciado a transmitir a la siguiente la cultura, la herencia construida por la experiencia humana inmemorial. La causa es que se concibe la cultura como un robo de libertad.
AN EFFECTIVE ALGORITHM FOR COMPUTING REDUCTS IN DECISION TABLES
Authors: Truong Do Si , Thanh Hien Lam , Thanh Tung Nguyen
Published: November 2022

Attribute reduction is one important part researched in rough set theory. A reduct from a decision table is a minimal subset of the conditional attributes which provide the same information for classification purposes as the entire set of available attributes. The classification task for the high dimensional decision table could be solved faster if a reduct, instead of the original whole set of attributes, is used. In this paper, we propose a reduct computing algorithm using attribute clustering. The proposed algorithm works in three main stages. In the first stage, irrelevant attributes are eliminated. In the second stage relevant attributes are divided into appropriately selected number of clusters by Partitioning Around Medoids (PAM) clustering method integrated with a special metric in attribute space which is the normalized variation of information. In the third stage, the representative attribute from each cluster is selected that is the most class-related. The selected attributes form the approximate reduct. The proposed algorithm is implemented and experimented. The experimental results show that the proposed algorithm is capable of computing approximate reduct with small size and high classification accuracy, when the number of clusters used to group the attributes is appropriately selected.
Hyporesponse to statin therapy among patients with acute coronary syndrome: prevalence, impact on the development of heart failure in a short-term follow-up
Authors: Druk I. V. , Korennova O. Yu. , Yukhina Yu. E. , Savchenko M. V. , Maciyauskas N. A. , Shukil L. V.
Published: November 2022

Aim. To study the prevalence of hyporesponse to statin therapy and its impact on the development of heart failure (HF) among patients after acute coronary syndrome (ACS) in a short-term follow-up.

Material and methods. This retrospective analysis of outpatient medical records of 400 patients observed at the Omsk Clinical Cardiology Dispensary after ACS was carried out. Optimal medication therapy was prescribed as part of the preferential provision of medicines under the 1H Program, including high-dose atorvastatin therapy (80 mg/day). Low-density lipoprotein cholesterol (LDL-C) was assessed at baseline and 1 and 12 months after therapy. Hyporesponse to statins was defined as the percentage reduction in LDL-C 14; left atrial volume index >34 ml/m2) function.

Results. There were 107 patients with hyporesponse (26,8%). Depending on the initial response to therapy, patients were divided into two groups: group 1 (hyporesponse, n=107), group 2 (more pronounced response, n=293). After 1 month, patients in the hyporesponse group had a higher level of LDL-C — 2,4 [2,2; 2,9] mmol/l (Me [25; 75%]) vs 2,0 [1,7; 2,5] mmol/l (p>0,05) in the second group. There was no difference in the prevalence of hospitalizations for recurrent ACS in the compared groups, as well as in the prevalence of new HF cases between groups.

Conclusion. The prevalence of hyporesponse to statin therapy was 26,8%, which required correction of lipid-lowering therapy in order to prevent recurrent cardiovascular events. Given the pleiotropic effects of statins that can participate in HF pathogenesis, as well as the inconsistency of current research results, further prospective long-term studies are required.
Pleiotropic effect of the ABCA1 rs2230806 polymorphism in cardiovascular diseases: a literature review
Authors: Chernova A. A. , Nikulin D. A. , Nikulina S. Yu. , Maksimov V. N.
Published: November 2022

Cerebrovascular accident (CVA) in patients with various cardiovascular diseases is a life-threatening complication, the development of which can be contributed by both environmental and genetic factors, the understanding of which is necessary to determine the tactics of treatment and predict the disease course. The article presents a brief review of studies on genetic predictors of CVA, in particular the association of the ABCA1 rs2230806 polymorphism and the risk of CVA in cardiovascular patients. Targeted studies of associations of the ABCA1 rs2230806 polymorphism with cerebrovascular diseases in the Russian Federation, except for studies at our university, could not be found.
Role of humoral markers in the pathogenesis of heart failure with preserved ejection fraction in patients with non-obstructive coronary artery disease
Authors: Grakova E. V. , Kop’eva K. V. , Gusakova A. M. , Smorgon A. V. , Maltseva A. N. , Mochula A. V. , Zavadovsky K. V.
Published: November 2022

Aim. To study the role of molecular biomarkers potentially influencing the formation and progression of heart failure (HF) with preserved ejection fraction (HFpEF) in non-obstructive coronary artery disease (CAD).

Material and methods. We examined 48 patients with newly diagnosed HFpEF against the background of non-obstructive CAD. Group 1 (n=31) included patients with class I-II HF and group 2 (n=17) included patients with class III HF; the control group consisted of patients without heart failure (n=17). The content of NT-proBNP and sST2, diastolic dysfunction and coronary flow reserve parameters were assessed.

Results. The content of NT-proBNP in patients of group 1 was 45% higher than in group 2 (p<0,001). The mean levels of sST2 did not exceed the reference values and significantly exceeded the control group (p<0,001). Coronary flow reserve (CFR) decreased (p<0,001) depending on the severity of HF. Negative associations of sST2 levels with LVEF, septal e’ and CFR were revealed, as well as NT-proBNP with CFR.

Conclusion. HFpEF in non-obstructive CAD is triggered due to progressive impairment of endothelial function, which affects the decrease in coronary and myocardial flow reserves, diastolic function, hyperproduction of humoral factors that initiate perivascular fibrosis and apoptosis of cardiomyocytes.
Genetic factors in the development of pulmonary embolism
Authors: Kryuchkova N. M. , Chernova A. A. , Nikulina S. Yu. , Maksimov V. N.
Published: November 2022

The article presents a literature review on the study of the relationship of FGA, FGB, F2, F5, PAI, ITGA2 gene polymorphisms with the development of pulmonary embolism (PE). We concluded that genetic factors in the development of PE are to a greater extent mutations in the F2, F5, PAI, ITGA2 genes. There is a positive correlation between the presence of combined genetic mutations and the development of PE. The study of allelic polymorphism of hemostasis genes makes it possible to predict coagulation system disorders, including PE.
Non-compaction and dilated cardiomyopathy: genotypic, phenotypic and prognostic differences
Authors: Vaykhanskaya T. G. , Sivitskaya L. N. , Levdansky O. D. , Kurushko T. V. , Danilenko N. G.
Published: November 2022

Aim. To study and compare genotypic and phenotypic signs in patients with non-compaction cardiomyopathy (NCM) and dilated cardiomyopathy (DCM), to conduct a comparative analysis of clinical outcomes and 5-year cumulative survival of patients with NCM and DCM.

Material and methods. The study included 144 unrelated patients with cardiomyopathy: NCM (n=74) and DCM (n=70). Mean age was 39 [30; 49] years (men, 96 (66,7%); left ventricular ejection fraction (LVEF) was 30,5 [24; 46]%. A comprehensive clinical examination included electrocardiography, Holter monitoring, echocardiography, cardiac magnetic resonance imaging, coronary angiography, DNA diagnostics (NGS+Sanger), cascade screening, and cosegregation analysis. To assess clinical outcomes, the NCM group was divided into 2 subtypes according to baseline LV systolic function (NCM/DCM phenotype — 50 individuals with LVEF ≤49%; and isolated NCM — 24 patients with LVEF ≥50%). The following adverse events were assessed as the composite endpoint: cardiovascular death, heart transplantation (HT), sustained ventricular tachycardia, ventricular fibrillation, successful cardiopulmonary resuscitation, cerebral thromboembolism. The follow-up period was 62 months.

Results. Among patients with LVEF ≤49% at a 5-year follow-up, 37 (74,0%) of 50 patients with the NCM/DCM phenotype and 41 (58,6%) of 70 patients with DCM achieved composite endpoint. Out of 24 patients with NCM with LVEF ≥50% (median LVEF, 56 [51; 61]%), 2 (8,3%) patients achieved composite endpoint (χ2=28,8; p=0,001). In the NCM/DCM group with LVEF ≤49%, a higher level of pathogenic genetic variants (64% vs 41,4%/DCM vs 29,2%/NCM; χ2=11,4; p=0,003), cerebral thromboembolism (χ2=11,8; p=0,003) and HT (χ2=10,6; p=0,005). The results of the 5-year survival analysis (Kaplan-Meier) showed a worse prognosis for NCM with LVEF ≤49% compared with DCM (log rang: χ2=11,5; p=0,001) and isolated NCM (log rang: χ2=17,02; p=0,0001). In the overall cohort (n=144), gene-positivity was also associated with worse prognosis (log rang: χ2=5,38; p=0,02).

Conclusion. In the present study, patients with dilated subtype of NCM showed a worse prognosis compared with DCM and isolated NCM. Heart failure progression and cerebral thromboembolism were the most common complications in patients with NCM/DCM.
Infectious endocarditis and infection of intracardiac devices in adults. Clinical guidelines 2021
Authors: Demin A. A. , Kobalava Zh. D. , Skopin I. I. , Tyurin P. V. , Boytsov S. A. , Golukhova E. Z. , Gordeev M. L. , Gudymovich V. D. , Demchenko E. A. , Drobysheva V. P. , Domonova E. A. , Drapkina O. M. , Zagorodnikova K. A. , Irtyuga O. B. , Kakhktsyan P. S. , Kozlov R. S. , Kotova E. O. , Medvedev A. P. , Muratov R. M. , Nikolaevsky E. N. , Pisaryuk A. S. , Ponomareva E. Yu. , Popov D. A. , Rakhina S. A. , Revishvili A. G. , Reznik I. I. , Ryzhkova D. S. , Safarova A. F. , Tazina S. Ya. , Chipigina N. S. , Shipulina O. Yu. , Shlyakhto E. S. , Schneider Yu. A. , Shostak N. A.
Published: November 2022

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Enhancement of the bond behaviour between sand coated GFRP bar and normal concrete using innovative composite anchor heads
Authors: Shakiba Milad , Hosseini Seyed Mohammad , Bazli Milad , Mortazavi Seyed Mohammad Reza , Ghobeishavi Mohammad Ali
Published: November 2022

Anchor heads could efficiently address the bond weakness between Fibre-Reinforced Polymer bars and concrete. This experimental study enhanced the bond behaviour between GFRP bars and concrete using three innovative anchorage systems made from glass fibre cloth and epoxy resin. A direct pullout test was used to study the bond-slip performance between the bar and the concrete. Test variables were GFRP bar diameter (3 diameters), concrete compressive strength (20.4 and 40.2 MPa), and anchor system (three different types). Based on the test results, in low-strength concrete (i.e. 20.4 MPa) samples, the anchor system efficiency was not promising, and the failure occurred between the concrete and anchors. However, for higher strength concrete (i.e. 40.2 MPa) samples, the ultimate developed tensile load increased between 14 and 68% for different bar sizes and anchorage systems compared to the unanchored control specimens.
Acting Systems: Matrices, Analogies and Layers of Methods by Dr. Stephen Atkins, PhD
Authors: Atkins Stephen
Published: November 2022

This perspective paper discusses the compatibility of the Viewpoints and the Stanislavsky System in relation to the terms 'method' and system. The practice-led observations query how methods emerge from systems and what this might mean to the training actor. The paper also refers to the Crosspoints Acting System, a project developed by the author as a way of blending System-based acting with the goals of contemporary theatre and film production.
Aftermaths
Authors: Anderson Mary Elizabeth
Published: November 2022

Revisiting an article written for Body, Space and Technology in 2012-13, in conversation with the authors' life circumstances of that period, poetic text and imagery emerge in the aftermath of loss. The resulting performance script/score is composed in three episodes which are interlaced with reproductions of photos as watercolor paintings.
Waters in Anthropocenes: Art, Hydrofeminism and the 59th Venice Art Biennale 2022
Authors: Philippopoulos-Mihalopoulos Andreas
Published: November 2022

This intervention provides a selective survey of some of this year's Venice Art Biennale works that deal with water in an analysis that brings together the plural aspect of water with that of the anthropocene. The article does that by working through theory, description of artworks and fiction writing.
The Effect of Simulation Games in Improving Grade XII Students’ Academic Performance in Economics: An Action Research
Authors: Dorji Tshewang
Published: November 2022

This study investigated the effect of simulation games as an intervention strategy in the teaching-learning process to enhance performance of grade XII students in economics. The study adopted a mixed method research approach. A total of 27 (14 girls and 13 boys) grade XII students from one of the higher secondary schools participated in the study. The students were selected through non-probability convenient sampling techniques. The data sources include students class test score, narratives from the classroom observations and survey data. The findings revealed that the students were very positive about the use of simulation games as a classroom pedagogy. Simulation games help students comprehend concepts, ideas, and hypotheses easily besides making teaching-learning interesting, enjoyable, and fun as evident from the increase in mean marks in the class test 2 and high mean average score of 4.5 in the survey rating. However, the study also cautions that the simulation games are time-consuming and teachers need more time and effort to prepare and implement in the class.
Smart polymers: Challenges and future
Authors: Hernandez-Martinez AR
Published: November 2022

According to the International Union of Pure and Applied Chemistry (IUPAC) Smart Polymers (SP) or stimulus-responsive polymers are “polymers that respond or that is designed to respond to a stimulus like pH, light, heat, etc. change, and provides a predetermined action”.
Life Course Justice and Learning
Authors: Lulle Aija
Published: November 2022

There is a paradox: While life courses are de facto pluralising, the pull to conform to an imagined standard is strong. In this thematic issue, we unpack the question: To whose standards do people cohere over the course of their lives? We seek the answers through the idea of life course justice, by which we mean a critical inquiry into how wealth, opportunities, and privilege are distributed and constrained in certain life stages and situations, and geographically. The dual focus of this thematic issue is thus on how people forge new ways to learn and work and how they try to resolve life course differences.
Shared Housing as Public Space? The Ambiguous Borders of Social Infrastructure
Authors: Grundström Karin
Published: November 2022

The Folkhem era in Sweden set high architectural standards for social infrastructures dispersedly located in cities. Over the past two decades, however, Swedish planning, when it comes to the localization of social infrastructure, has been increasingly characterized by privatized social infrastructures added to housing. Methodologically, this article draws on a compilation of architectural designs of shared housing that includes social infrastructure, 12 interviews with developers, and 22 interviews with residents. The article argues, first, that two historical approaches can be identified: one in which porous borders support urban social life in and around the housing complex and another where distinct boundaries form an edge where things end. Secondly, the article argues that in recent shared housing complexes, the infrastructures of fitness, health care, and privatized services—previously available solely in the public realm—have moved physically and mentally closer to the individual, largely replacing residents’ everyday use of public space. The article concludes that in recent shared housing complexes, ambiguous borders are formed. Ambiguous borders allow a flow of goods and people, but the flow is based on the needs and preferences of residents only. Overall, such privatization counteracts the development of urban social life while adding to housing inequality, as this form of housing is primarily accessible only to the relatively wealthy. Furthermore, there is a risk that urban planning may favour such privatization to avoid maintenance costs, even though the aim of planning for general public accessibility to social infrastructure is thereby shifted towards planning primarily for specific groups.
Towards Digital Social Infrastructure? Digital Neighborly Connectedness as a Social Resource
Authors: Rees Yann P. M. , Kurtenbach Sebastian , Rosenberger Katrin , Küchler Armin
Published: November 2022

Social infrastructure is made up of various material as well as non-material goods, ranging from venues for leisure such as movie theaters to indispensable everyday commodities, like sidewalks and streets. This is true both for urban and rural areas. However, the increasing emergence of digital aspects of social infrastructure has seemed to go unnoticed to some extent, with research specifically focusing on these digital aspects of social infrastructure being scarce at best—even though digitalization is currently a major emerging meta-development worldwide. The goal of our contribution is therefore to investigate the digital sphere and integrate it into the concept of social infrastructure. Drawing on descriptive findings from a multi-sited, community-based survey of residents in four rural areas in Germany (N = 413) as well as from 40 qualitative interviews, we present an integrative and expanded conceptualization of what we term a tangible digital social infrastructure. To do so, we examine digital neighborly connectedness as a social resource during the Covid-19 pandemic as a case study. We argue that digital neighborly connectedness served as both an integral part of on-site social infrastructure and as a social resource, especially during pandemic times. We discuss our results in light of current research on social infrastructure, with a specific focus on the scope of what counts as social infrastructure, as well as current discourse on social infrastructure in rural areas.
INVESTMENT ECOSYSTEM OF THE NATIONAL ECONOMY – GENESIS AND CATEGORY OF THE CONCEPT
Authors:   Taras Shevchenko national University of Kyiv, Bulkot O.
Published: November 2022

This article is devoted to defining the essence of the concept of an “investment ecosystem”. A comprehensive content analysis of the concepts “system”, “ecosystem”, and “entrepreneurial ecosystem” was carried out, based on which common characteristics were identified and summarized, which made it possible to conclude the feasibility of applying the concept of natural ecosystems for the analysis of investment processes in the national economy. The author defined the components of the analysis of the categorical and conceptual apparatus, which included investment potential, investment attractiveness, investment environment, investment cluster, and investment ecosystem. Based on the study of existing approaches, the interpretation of the category “investment environment of the country” is generalized. The analysis of the mentioned concepts made it possible to identify their common and distinctive features and to conclude that none of the categories fully possesses neither the complementary composition of participants, functional features, or a specific mechanism of internal and external interaction to be considered a full-fledged investment ecosystem. Extrapolating the concept of the ecosystem to investment activity, we can state that based on the synthesis of theoretical concepts and their extrapolation to the mechanisms of implementation of investment activity, it has been proven that implementing the theory of open systems allows to interpret the investment system as an open-type association of its structural elements and mechanisms of their interaction, which includes it has both open (investment environment) and closed (investment-innovation clusters) subsystems, and its evaluation should consider the effectiveness of the entire investment system which directly depends on their interconnection, interdependence, complementarity and synergy. The conducted study of the conceptual apparatus made it possible to propose the author’s category “investment ecosystem”.
The ideas about Ottomans in Italy during the 15th and 16th centuries: the study through textiles
Authors:   Taras Shevchenko national University of Kyiv, Hotsalo Kateryna
Published: November 2022

The article is an attempt to supplement the knowledge of Italians' ideas about Ottomans during the 15th and 16th centuries, using the preserved antique textiles of both cultures, as well as fabrics' mentions in written and visual sources. Modern technological research methods of ancient textiles make it possible to clarify their attributive data, which in turn contributes to more definite conclusions about artistic exchanges in the field of decoration of expensive textiles. Thus, for example, it turned out that two fabrics from the collection of the Khanenko Museum, which were considered Italian, are the work of Ottoman masters. If the structure of the Italian and Ottoman fabrics of the period under the study are quite different, visually – they are often almost identical. Despite the fact that the trade in Ottoman fabrics was not widespread in Italy during the 15th and 16th centuries, Italian painters and weavers still actively imitated the textile products of the Middle East. Written sources, especially epistolary and inventory, are also filled with references to Ottoman fabrics and "turkish-style" textiles. Since there were few authentic silks from West Asia in the secular space of Italian cities at the time, it is likely that citizens could even associate Ottoman culture with certain types of local textiles that looked like "Turkish". The number and peculiarities of their description in written sources suggest the Italians' enormous interest in Ottoman culture, "cautious concern" for the growing Ottoman Empire, and recognition of its dominance over many Asian peoples. All this took place in spite of the permanent wars between the Venetian Republic and the Ottomans. The entry into Italian fashion of fabrics "in the Turkish style" was lightning fast. However, local authors emphasized the antiquity of this fashion tradition, to some extent rooting the idea of ​​kinship between the two cultures.
Modeling of microhistory in a narrative exposition on the example of the exhibition project at Taras Shevchenko National Museum «Shevchenko in the language of the city»
Authors:   Taras Shevchenko national University of Kyiv, Chupryna Yulia
Published: November 2022

The article attempts to analyze the method of historical modelling in a narrative exposition on the example of an exhibition project at the Taras Shevchenko National Museum "Shevchenko in the language of the city." In modern exhibition design, the communicative approach is defined as a way to establish a dialogue between the exhibit and the visitor. In this case, there are two cornerstones. Firstly, to provide an important condition for the visitor's ability to understand the “language of things”. And, secondly, to organize the unique exhibition space. Today, the museum exposition is one of the main and the most important means of communication between the visitor and the museum’s stories. The communication system refers to the top qualities of modern design at the museum exposition. Therefore, the author defined the main purpose of the study as clarifying the features of the interaction (spectator-exhibit-exhibition) in terms of a new approach to creating an exhibition space (using narration, the method of historical modelling). In the postmodern world, this kind of space is positioned not only as an area of ​​knowledge or aesthetic pleasure but also as a meeting space, which equalizes social status and removes barriers to communication. Following the set goal, the exhibition project implemented several tasks. The first one is to form a holistic narrative of the project, which helped to immerse visitors in the theme of the project, allowing them to be present in that time and space. The second one is to demonstrate the role of the city in human life in an accessible way and the opportunities it opens up for career building, multifaceted implementation, and further chances. The last one is to model two micro-stories of people who have realized themselves in the urban space, "take" from the city certain benefits, but at the same time "give", invest in the city. Thanks to the method of historical modelling, the exhibition space turns into a "living picture" of the epoch. In the Ukrainian-language museum segment, this topic presented quite bland, although in the western territories such researchers as M. Kagan, K. Mannheim, and E. Rozemblium work with it more widely.
Oneiric images in artworks of 19th-century French artists
Authors:   Taras Shevchenko national University of Kyiv, Bovtun Anastasiia
Published: November 2022

The article reviews the artistic activity of representatives of French graphic art – Jean-Jacques Grandville (1803–1847), Victor Hugo (1802–1885), and Odilon Redon (1840–1916), who became founders of new interpretations for dreams in 19th-century art. We analyzed artists’ key works representing the world of dreams with the help of concrete images and symbols. The article outlines special features of dream depiction in French graphic art of the second half of the 19th century. In the 19th century, the increased interest in the topic of dreams in France related to French scientist Alfred Maury (1817-1892). His book “Sleep & Dreams” (1861) influenced conceptually the activity of French artists who researched the unconscious with the help of visual language. The French art of the 19th century gradually withdrew from traditional European plots of dreams depiction of previous years that can be encountered in the artworks of Henry Fuseli, Francisco Goya, and William Blake. French graphic artists focused their attention on depicting the inner nature of dreams and oneiric space. They were not interested in plots with a sleeping person – they aimed to delve into the most hidden part of human subconsciousness during sleep and embody what is happening there. They approached philosophical and medical tracts devoted to the nature of dreams, inspired by spiritualism, and studied various oneiric states – insomnia, hallucinations, somnambulism, and nightmares. Dreams became the source of inspiration and infinite fantasies for 19th-century French artists. They turned into art researchers of dreams, kept «night» diaries, and wrote down their observations. Their artworks became exceptional results of these oneiric searches. The research of 19th-century French graphic artists and their innovative approaches to the depiction of dreams also play an important role in understanding the establishment and development of surrealist art at the beginning of the 20th century.
(Dis)Affect, Photography, Place
Authors: Prieto-Blanco Patricia
Published: November 2022

Migrants are connected for a variety of reasons (Leurs and Prabhakar 2018, p. 247), and in a myriad of ways (Cabalquinto 2018; Özdemir, Mutluer, and Özyürek 2019; Gencel Bek and Prieto-Blanco 2020). Drawing from a larger project of ethnographic nature (Prieto-Blanco 2016b), this paper argues that photographic practices advance socialization in transnational families, and that each practice activates certain relational affordances to support bonding and familial intimacy. This also serves to offer an alternative reading of phatic communication (Malinowski 1923) as an emotion‐based process. Finally, the paper proposes to understand (digital) photography as a medium of (inter)action and experience for transnational families.
The Wall and the Politics of Exclusion and Inclusion at Baja California Borderlands: A Pictorial Journey
Authors: Ortiz Angel Iglesias
Published: November 2022

The essay considers the border wall between Mexico and the United States as its primary visual, symbolic, and material reference to reflect on the politics of exclusion and inclusion entangled in everyday discourses and practices in Baja California’s borderlands. Everyday bordering applies not only to governmental technologies of control but also to these sorts of politics. The essay proposes that the wall represents an exclusionary symbol that is nonetheless challenged by those who attempt to embed inclusion in this context. The pictorial journey shows aspects of common situations next to the wall between the Mexican cities of Mexicali and Tijuana.
Security of Big Data over IoT Environment by Integration of Deep Learning and Optimization
Authors: Alleema N.Noor , Raman Ramakrishnan , Castro-Cayllahua Fidel , Rathod Vinod Motiram , Cotrina-Aliaga Juan Carlos , Reshma Ramakant Kanse Supriya Sanjay Ajagekar,
Published: November 2022

This is especially true given the spread of IoT, which makes it possible for two-way communication between various electronic devices and is therefore essential to contemporary living. However, it has been shown that IoT may be readily exploited. There is a need to develop new technology or combine existing ones to address these security issues. DL, a kind of ML, has been used in earlier studies to discover security breaches with good results. IoT device data is abundant, diverse, and trustworthy. Thus, improved performance and data management are attainable with help of big data technology. The current state of IoT security, big data, and deep learning led to an all-encompassing study of the topic. This study examines the interrelationships of big data, IoT security, and DL technologies, and draws parallels between these three areas. Technical works in all three fields have been compared, allowing for the development of a thematic taxonomy. Finally, we have laid the groundwork for further investigation into IoT security concerns by identifying and assessing the obstacles inherent in using DL for security utilizing big data. The security of large data has been taken into consideration in this article by categorizing various dangers using a deep learning method. The purpose of optimization is to raise both accuracy and performance.
MIVAP is the optimal parathyroidectomy technique
Authors: Romashchenko P. N. , Fomin N. F. , Vshivtsev D. O. , Maistrenko N. A. , Krivolapov D. S. , Maleev Yu. V. , Pryadko A. S. , Starchik D. A.
Published: November 2022

Objective. To ground from clinical, topographo-anatomical positions the choice of the most rational techniques of parathyroidectomy in patients with hyperparathyroidism, which permit to reduce the intraoperative injury, to minimize operative complications, persistence and hyperparathyroidism relapse rates, to elevate the quality of life.
Materials and methods. The research had two stages. Topographo-anatomical stage was realized at two levels: 1) on the anatomical material including 15 dead bodies; 2) on the plated end-grain cuttings of the dead bodies necks (n = 4). During a clinical stage, the results of examination and treatment of 182 patients with hyperparathyroidism, operated with traditional and different minimally invasive techniques, were studied.
Results. The analysis of short-term results of surgical treatment of hyperparathyroidism patients in the retrospective group allowed determining the starting points for the topographo-anatomical stage of the research. The data received during the topographo-anatomical stage permitted to substantiate the choice of minimally invasive endoscopically-assisted technique for parathyroidectomy as the most rational and safety one. Introduction of the study results into surgical treatment of patients of the prospective group showed the efficiency of MIVAP technique in the form of decrease in the frequency of surgical complications from 12.1 to 6.0 % (all complications are attributed to I and II degree by Clavien-Dindo classification and had transitory character) with the reduction of the time of operative intervention and average duration of hospital treatment after the surgery.
Conclusions. Minimally invasive endoscopically-assisted parathyroidectomy with the lateralization of the lobe of the thyroid gland, preservation of the upper and lower thyroid vessels in conditions of intraoperative neuromonitoring and photodynamic visualization of the parathyroid gland can be considered an optimal surgical technique.