bluuebunny/crossref_metadata_2025 huggingface dataset:
SOCIJALNA ISKLJUČENOST DJECE RANE I PREDŠKOLSKE DOBI: KONCEPTUALIZACIJA, RIZICI I MODEL INTERVENCIJA
Authors: Bouillet Dejana , Domović Vlatka
Published: August 2021

SOCIAL EXCLUSION OF EARLY AND PRESCHOOL CHILDREN: CONCEPTUALIZATION, RISKS AND INTERVENTION MODEL This paper contains an analysis of the construct of social exclusion with special focus on children. It is based on a review of the literature on social exclusion and the risks of social exclusion, using a qualitative method of document analysis. Social exclusion of children in early and preschool age is defined as a multidimensional construct that includes economic, social, cultural, health and other aspects of unfavourable circumstances and deprivation which individually or in combination may have an adverse impact on child development. According to this definition, risks which can influence the children’s current development, health and quality of life, as well as their adult life, are analysed. The analysed risks include the characteristics of the children themselves, as well as their families and the characteristics of the support system for the child and parents. Based on the analysis of the risks of social exclusion of children of early and preschool age, a model of intervention was suggested, which takes into account a close cooperation of the healthcare system and the system of social care and education. Key words: social exclusion; children in early and preschool age; risks; model of interventions
Artificial Intelligence in Gravitational-Wave Science
Authors: KIM Kyungmin
Published: August 2021

Artificial intelligence gaining popularity not only in the computational engineering industry but also in fundamental science. For the realization of artificial intelligence, numerous machine learning algorithms have been introduced and tested for their applicability. Even in the field of gravitational-wave science, the application of machine learning has been widely studied to enhance conventional analyses in all disciplines from searching for gravitational-wave signals to characterizing noise transients. In this article, I briefly introduce the current status of gravitational-wave science and summarize research topics in which machine learning is applied to each discipline of gravitational-wave science.
A Conversation among Young Astrophysicists
Authors: KIM Young-Min , PARK Miok , BAE Yeong-Bok , HONG Sungwook E , PARK Chan
Published: August 2021

Recently, many Nobel Prizes in Physics have been awarded in the field of astrophysics. Gravitational wave observations and contributions to LIGO in 2017, cosmology and exoplanets in 2019, and black hole formation theory and discovery of a supermassive black hole in 2020. Surprisingly, that these topics, which are somewhat distant from our daily life, have great physical significance and are being actively studied worldwide. We invited young astrophysicists at the forefront of astrophysic research to share their thoughts on astrophysics. That conversation took place online on June 2, 2021.
Physical and Mechanical Properties of the Road Surface when Replacing the Finely Crushed Mineral Part of Asphalt Concrete with Porcelain Stoneware Production Waste
Authors: Yatsenko Natalia , Evforitsky Alexandr , Kotenko Natalya
Published: August 2021

The possibility of using waste porcelain stoneware - a high-strength non-porous, dense material as a finely crushed mineral part of asphalt concrete with 0-5 mm fraction has been established. The adhesive additive Bitaden content was revealed, that intensifies porcelain stoneware interaction with bitumen due to the additional hydrogen bonds formation, the particles’ contact plane activation with the action of van der Waals forces. The conditions for obtaining asphalt concrete mixtures of type B, grade 1 and G, grade 2 of the optimal grain composition with a reduced content of BND 60/90 bitumen have been developed. Physical and mechanical properties are characterized by an increase in the water resistance of asphalt concrete samples based on porcelain stoneware, compressive strength and shear resistance.
Fine-Grained Lightweight Concrete from Volcanic Tuffsawing Waste
Authors: Beshtokov Beslan , Tsipinov Aues , Mashukova Marita , Ozrokov Astemir , Tokmakov Timur
Published: August 2021

The article is devoted to the study of the fine-grained lightweight concrete properties on porous aggregates of volcanic tuff from the Kamenskiy deposit in Kabardino-Balkaria, prepared on tuff sand.
Investigation of the Effect of Combined Binder Based on Portland Cement and Lime on the Properties of Non-Autoclave Silicate Materials Modified with Synthetic Crystalline Filler
Authors: Volodchenko Aleksandr
Published: August 2021

Among the wide variety of currently used wall building materials and products, it is possible to single out the autoclave-hardened silicate products. To obtain silicate materials of autoclave hardening, lime-silica binders are mainly used. The hardening process of such a binder is carried out in an environment of water vapor at high temperature and pressure. It is relevant to use a certain type of silicate materials in the technology with raw materials that provide hardening with reduced parameters of hydrothermal synthesis, which will make it possible to obtain wall silicate materials in non-autoclave conditions. This can be done through the use of clay rocks of the mineral formation unfinished stage. In the course of the research, the effect of a combined binder based on Portland cement and lime on the properties of non-autoclave silicate materials modified with a synthetic crystalline filler was studied. It has been established that the addition of a synthetic crystalline filler represented by artificial calcium hydro-silicates makes it possible to increase the presence of a crystalline phase formed due to the clinker minerals hydration in the early stages of hardening, and, as a consequence, to increase the operational properties of the resulting composites. The addition of lime to the raw mixture will additionally compensate for the lack of calcium ions during the entire hardening process of non-autoclave silicate composites based on aluminosilicate raw materials and Portland cement.
Fire-Retardant Plastering Mortars Based on Exfoliated Vermiculite and Volcanic Ash
Authors: Khezhev Tolya , Zhurtov Artur , Kazharov Alim , Zrumov Tamerlan , Samgurov Asharbek
Published: August 2021

The research results on the development of fire-retardant composite cement mortar mixtures on exfoliated vermiculite and volcanic ash with the use of a multifunctional additive are presented D-5. Compositions of fire-retardant composite mortars, which make it possible to significantly improve the physical and mechanical properties of mortar mixtures and mortars, are proposed. Introduction of a multifunctional supplement D-5 in mortar mixtures makes it possible to improve the composite mortar mixtures properties and improve the solution characteristics. Replacement of finely dispersed fraction of exfoliated vermiculite d<0,63 mm volcanic ash by volume in mortar mixtures does not cause a noticeable increase in the solution density, while their strength characteristics increase. The developed composite mortar mixtures meet the requirements of GOST 28013–98 and have a low-cost price due to volcanic ash use.
Materials for 3D Concrete Printing: Approach to Standardization in Russia
Authors: Adamtsevich Aleksey , Pustovgar Andrey , Adamtsevich Liubov
Published: August 2021

3D Concrete Printing (3DCP) technology, compared to traditional monolithic construction, gives a possibility to increase the workspeed and reduce the manual laborproportion, reduce material consumption and also improve the architectural appearance of buildings being erected. At the same time, more stringent requirements are imposed on the material for 3D printing in terms of rheological characteristicscontrol, strength developmentkinetics, interplay adhesion and some other parameters than for conventional ready-mixed concrete. Therefore, to ensure the mass application of technologies for additive construction production using concrete as printing ink, it is necessary to develop a regulatory and technical base, including the development of standard test methods to determine the operational properties of this typeofmaterials. The article examines the main trends in the management of the materials’properties for construction 3D printing based on cement binders and describes the principles of building a system for standardizing materials for 3D printing construction in Russia, which was developed with the participation of the authors of this article.
Influence of Granulometric Composition and Type of Fillers and Additives on the Strength and Biostability of Cement Composites Based on Dry Building Mixtures
Authors: Suraeva Ekaterina , Elchishcheva Tatyana , Svetlov Dmitry , Smirnov Vasiliy , Afonin Victor , Erofeeva Irina
Published: August 2021

The structure of filled cementitious composite materials is formed as a result of hardening with the formation of a crystalline framework. The filler is involved in the building material crystal system structure formation. Chemically active fillers promote intensive release of hydration products that bind into insoluble compounds and increase the system stability. When developing the formulations for dry building mixtures, it is effective to use several fillers with different properties that complement each other, and biocidal additives increasing the materials resistance to environment effects formed by mold fungi. To create modified dry building mixtures based on cement binder, materials such as filler made of quartz sand of various fractions, fillers chrysotile and clinoptilolite and biocidal additives of the Teflex series were used. The composition with sand grains of 0.16–0.315 mm in size showed high strength properties in bending and compression. The introduction of chrysotile in an amount of 3% by weight of cement and quartz sand with a particle size of 0.16–0.315 mm increases the compressive and flexural strength by 7 and 13%, respectively, compared with the control composition. Clinoptilolite, introduced in an amount of 20% of the cement mass instead of one of the quartz sand fractions, increases the compressive strength of the composites up to 5%. The introduction of the Teflex series additives in the amount of at least 1% by weight of the binder ensures the composites’ fungal resistance. The additive “Teflex disinfectant” in an amount of at least 3% of the cement mass gives the composites fungicidal properties, the zone of no fungal growth on the nutrient solution near the infected samples is 4 mm.
Fine-Grained Fibre Concrete of Run-Of-Crusher Stone Using Volcanic Ash
Authors: Khezhev Tolya , Kardanov Aslan , Bolotokov Eldar , Dottuyev Azamat , Mashfezh Ibrahim
Published: August 2021

The results of the studies on the creation of self-compacting fine-grained fiber-reinforced concrete based on run-of-crusher stone with the use of a polyfunctional additive D-5 are presented. Compositions of self-compacting fine-grained fiber-reinforced concrete with the use of basalt fiber have been developed, which significantly reduce cement consumption and improve the characteristics of fine-grained concrete mixture and concrete. Using a polyfunctional additive D-5in mixtures makes it possible to increase the strength properties of fine-grained fiber-reinforced concrete while improving the concrete mixtures’ rheological characteristics. Replacement of cement up to 10% of the mass by ash fraction d<0.14 min fine-grained concrete mixtures does not cause a noticeable decrease in the concrete strength properties. The developed self-compacting fine-grained fiber-reinforced concretes have increased strength properties and have a low-cost price due to the use of local raw materials and run-of-crusher stone.
Estimation of the Filled Two-Component Cold Curing Polymer System Performance as a Coating for Protecting Concrete Surfaces from the Aggressive Environment Exposure
Authors: Burkhanova Renata , Evstafyeva Natalya , Akchurin Talgat , Stefanenko Igor
Published: August 2021

A filled two-component polymer cold curingsystem (FTCPS) is discussed in the article. To assess its corrosion resistance and durability, the indexes of reagent resistance were determined in accordance with the sorption method. What is optimal, since this value depends on the parameters of mass transfer, the intensity of the reaction, the size of the product, the duration of exposure to aggressive media and other factors. As aggressive media were taken: water, 5% hydrochloric acid solution, 25% aqueous ammonia solution, 10% sodium hydroxide solution, saturated sodium chloride solution. The exposure time was 360 days. Reagent resistance evaluation of the developed FTCPScompositionswas carried out on the basis of guidelines for determining the anticorrosive properties of protective coatings of concrete and laboratory test methods. Changes in the mass of the samples and their reagent resistance as a result of exposure to chemical reagents simulating an aggressive environment during operation were evaluated. The change in the index of reagent resistance in laboratory conditions did not go beyond the value of 0.80, which makes it possible to ensure reliable protection and operation of polymer-coated products under conditions of exposure to these aggressive environments.
Associative learning and memory through metamorphosis inGrapholita molesta(Busck) (Lepidoptera: Tortricidae)
Authors: Sant’Ana Josué , Tognon Roberta , Pires Patrícia D.S. , Gregório Patrícia L.F.
Published: August 2021

Learning of chemical stimuli by insects can occur during the larval or adult life stage, resulting in changes in the imago chemotaxic behaviour. There is little information on learning in Tortricidae, and associative learning through metamorphosis is unknown in this group. Here, we evaluate the influence of olfactory aversive learning inGrapholita molesta(Busck) (Lepidoptera: Tortricidae) during the immature stage and determine if memory persists after metamorphosis. Larvae (10–12 days old) were conditioned to associate the odour of ethyl acetate with pulses of aversive electric shock. Insects were exposed to air, to the ethyl acetate odour, and to shock, in isolation or combination. After conditioning, both larvae and adults were tested in a two-choice olfactometer. Larvae exposed only to air or ethyl acetate increased legibility. Larvae trained with ethyl acetate and shock simultaneously exhibited significant avoidance to ethyl acetate. Avoidance was still present for at least 72 hours after metamorphosis. Thus,G. molestahas the ability to associate an odour to an aversive stimulus precociously, and this association is maintained through metamorphosis and persists into adulthood.
NK Cell Responses in Zika Virus Infection Are Biased towards Cytokine-Mediated Effector Functions
Authors: Maucourant Christopher , Nonato Queiroz Gabriel Andrade , Corneau Aurelien , Leandro Gois Luana , Meghraoui-Kheddar Aida , Tarantino Nadine , Bandeira Antonio Carlos , Samri Assia , Blanc Catherine , Yssel Hans , Rios Grassi Maria Fernanda , Vieillard Vincent
Published: August 2021

Zika virus (ZIKV) is a mosquito-borne flavivirus that has emerged as a global concern because of its impact on human health. ZIKV infection during pregnancy can cause microcephaly and other severe brain defects in the developing fetus and there have been reports of the occurrence of Guillain-Barré syndrome in areas affected by ZIKV. NK cells are activated during acute viral infections and their activity contributes to a first line of defense because of their ability to rapidly recognize and kill virus-infected cells. To provide insight into NK cell function during ZIKV infection, we have profiled, using mass cytometry, the NK cell receptor-ligand repertoire in a cohort of acute ZIKV-infected female patients. Freshly isolated NK cells from these patients contained distinct, activated, and terminally differentiated, subsets expressing higher levels of CD57, NKG2C, and KIR3DL1 as compared with those from healthy donors. Moreover, KIR3DL1+ NK cells from these patients produced high levels of IFN-γ and TNF-α, in the absence of direct cytotoxicity, in response to in vitro stimulation with autologous, ZIKV-infected, monocyte-derived dendritic cells. In ZIKV-infected patients, overproduction of IFN-γ correlated with STAT-5 activation (r = 0.6643; p = 0.0085) and was mediated following the recognition of MHC class 1–related chain A and chain B molecules expressed by ZIKV-infected monocyte-derived dendritic cells, in synergy with IL-12 production by the latter cells. Together, these findings suggest that NK cells contribute to the generation of an efficacious adaptive anti-ZIKV immune response that could potentially affect the outcome of the disease and/or the development of persistent symptoms.
Converting an Anti-Mouse CD4 Monoclonal Antibody into an scFv Positron Emission Tomography Imaging Agent for Longitudinal Monitoring of CD4+ T Cells
Authors: Islam Ashraful , Pishesha Novalia , Harmand Thibault J , Heston Hailey , Woodham Andrew W , Cheloha Ross W , Bousbaine Djenet , Rashidian Mohammad , Ploegh Hidde L
Published: August 2021

Immuno–positron emission tomography (PET), a noninvasive imaging modality, can provide a dynamic approach for longitudinal assessment of cell populations of interest. Transformation of mAbs into single-chain variable fragment (scFv)–based PET imaging agents would allow noninvasive tracking in vivo of a wide range of possible targets. We used sortase-mediated enzymatic labeling in combination with PEGylation to develop an anti-mouse CD4 scFv–based PET imaging agent constructed from an anti-mouse CD4 mAb. This anti-CD4 scFv can monitor the in vivo distribution of CD4+ T cells by immuno-PET. We tracked CD4+ and CD8+ T cells in wild-type mice, in immunodeficient recipients reconstituted with monoclonal populations of OT-II and OT-I T cells, and in a B16 melanoma model. Anti-CD4 and -CD8 immuno-PET showed that the persistence of both CD4+ and CD8+ T cells transferred into immunodeficient mice improved when recipients were immunized with OVA in CFA. In tumor-bearing animals, infiltration of both CD4+ and CD8+ T cells increased as the tumor grew. The approach described in this study should be readily applicable to convert clinically useful Abs into the corresponding scFv PET imaging agents.
Association of KIR Genes and MHC Class I Ligands with Atopic Dermatitis
Authors: Margolis David J , Mitra Nandita , Hoffstad Ole J , Kim Brian S , Monos Dimitri S , Phillips Elizabeth J
Published: August 2021

Atopic dermatitis (AD) is a chronic illness that is associated with immune dysregulation. NK cell function has previously been associated with AD. NK cells directly interact with polymorphic HLA class I ligand variants using killer cell Ig-like receptors (KIRs). The purpose of this study was to identify potential associations between NK cell function and AD by evaluating variation in the presence of KIR genes as well as KIR gene interactions with the appropriate HLA class I KIR–specific ligands. Human DNA from the genetics of AD case–control study was used to genotype HLA class I KIR–specific ligands and the presence of KIR genes. In the full cohort, an increased risk of AD was noted for KIR2DL5 (1.51 [1.13, 2.01]), KIR2DS5 (1.72 [1.26, 2.34]), and KIR2DS1 (1.41 [1.04, 1.91]). Individuals with KIR2DS5 or KIR2DS1 and the HLA-C*C2 epitope were at an increased risk of AD (1.74 [1.21, 2.51] and 1.48 [1.04, 2.12], respectively). The HLA-B*-21T (TT) leader sequence increased the risk of AD across ethnicity. African Americans with KIR2DL2, KIR2DS1, KIR2DL5, and KIR2DS5 are more likely to have AD, and the risk increased for KIR2DS1 and KIR2DS5 in the presence of appropriate HLA-C C2 epitope. The risk of AD also increased for individuals with the HLA-B*-21T leader sequence. Future studies should focus on KIR gene allelic variation as well as consider cell-based measurements of KIR and the associated HLA class I epitopes.
Extensive Pulmonary Thromboembolism and Serious Threat of Systemic Thromboembolism in a Suspected Covid Recovered Patient
Authors: Sagar Pramod , Sheriff Ejaz Ahamed , Sivakumar Kothandam
Published: August 2021

Hemodynamically significant large pulmonary embolism causes right ventricular dysfunction that stretches open the foramen ovale in the atrial septum. Paradoxical embolism is common in patients with right ventricular dysfunction. While anticoagulation and thrombolysis are considered the treatment of choice in pulmonary embolism, a large thrombus in transit across the patent foramen ovale carries a serious risk of systemic thromboembolism and warrants urgent surgery. The recent coronavirus disease 2019 (COVID-19) pandemic has led to a significant increase in the incidence of thromboembolic illnesses. A patient acutely presented with deep vein thrombosis, pulmonary embolism, large thrombus in transit across the foramen ovale along with elevation of multiple inflammatory biomarkers that were suggestive of a possible post-COVID sequelae. Images and management strategies are discussed in this report.
Tacrolimus-Induced Bradykinesia Secondary to Phenoconversion in an Elderly Post-Bilateral Lung Transplant Patient
Authors: Argevani Lia , Schuh Michael J. , Crosby Sheena
Published: August 2021

Objective: To report pharmacogenomics post-related bradykinesia secondary to phenoconversion in an elderly post-bilateral lung transplant patient. Summary: The patient was a 68-year-old double lung transplant patient taking the immunosuppressant and CYP3A4/5
substrate tacrolimus concomitantly with 2 CYP3A4/5 inhibitor medications, fluconazole and diltiazem. This drug combination post-dosing resulted in debilitating bradykinesia 1-2 hours after dosing, increasing the risk of falls and possible increased mortality and morbidity risk. Conclusion:
Taking tacrolimus in combination with CYP3A4/5 inhibitors may increase neurologic adverse effects resulting in increased fall and associated increased mortality and morbidity risk.
The Changing Face of Older American Veterans
Authors: Roefaro John
Published: August 2021

The demographics of the Veterans in our care are everchanging, we are currently seeing a major shift in our geriatric Veteran population. World War II (WWII) ended in 1945, meaning that the youngest WWII Veterans are no more than 93 years old. There are currently close to 300,000 WWII Veterans and this number is expected to drop to <50,000 by 2024. Conversely, there are currently nearly 1 million Veterans of the Korean Conflict (1950-1953) and nearly 6 million Vietnam Era (1964-1975) Veterans. As the Vietnam Era Veterans age, we are seeing a surge in the number of Veterans aged 75 and older. There are currently less than 4.6 million Veterans in this age group and that number is expected to exceed 5 million by 2023.
Access to Shared Electronic Medical Records to Improve Adherence and Management of Discharge Medications
Authors: Mistry Vinita , McKee Meghan
Published: August 2021

Objective: The aim of the study is to assess the impact of shared electronic medical records (EMR) on the ability of pharmacists to provide medication reconciliation and clinical interventions in home-based primary care (HBPC) veterans hospitalized outside of the Veterans
Affairs Medical Center (VAMC). Design: This was a single-centered, retrospective quality improvement study. An assessment of medical records was conducted to analyze changes in ability to conduct medication reconciliations and interventions in HBPC Veterans hospitalized
prior- to and postaccess to shared EMR systems with local non-VA acute care facilities. Setting: VAMC. Patients: HBPC veterans hospitalized outside of the VAMC. Ninety-eight veteran cases were assessed and 59 enrolled into the retrospective study.
Interventions: Impact of access to real-time shared EMR systems outside of the VAMC facility on the ability to provide appropriate and timely medication reconciliations and interventions. Main Outcome Measures: Data collection occurred between January and
March 2019 and January and March 2020. Number of medication reconciliations conducted, pharmacist interventions made, and time taken to complete transitions of care (TOC) evaluations following hospital discharge were assessed. Results: The number of medication reconciliations
completed preaccess to shared EMR was 41.9% versus 85.7% in the postaccess group. The percent hospitalizations with pharmacist interventions was 35.5% preaccess and 60.7% postaccess. The mean number of days to complete a TOC note following discharge from the hospital was 15.2 (±20.2)
days preaccess versus 5.3 (±5.7) days postaccess. Conclusions: Shared EMR systems provide pharmacists reliable and real-time access to patient chart data, laboratory results, and discharge summaries, allowing for timelier medication reconciliations and clinical pharmacist
interventions.
Statistics Instructors' Perceptions of Statistics Literacy in Different Undergraduate Programs
Authors: Özmen Zeynep Medine , Baki Adnan
Published: August 2021

The present study aimed to investigate the statistical literacy perceptions of instructors who teach undergraduate statistics courses in different disciplines. Instructors were asked questions on their statistical literacy definitions, organization of the course content, topics emphasized or avoided by instructors in teaching statistics, and instructors post-course expectations from their students. Qualitative data gathered from interviews were analyzed and categorized under five main themes. The instructors' ultimate expectations from the students and the topics they emphasized during the courses are mostly stated in relation with statistical literacy.  They provided less information related statistical literacy about two themes: course content and the issues they avoid. Recommendations from this study include reviewing and revising statistics course content and methods to reveal the components of statistical literacy.
Employment, Employability, and Competencies of the Bachelor of Secondary Education Graduates
Authors: Caingcoy Manuel E. , Ramirez Iris April L. , Gaylo Derren N. , Adajar Ma. Isidora W. , Lacdag Elvie O. , Blanco Gem Aiah B.
Published: August 2021

Tracing graduates has become an imperative for higher education institutions much more during the pandemic. This tracer determined the employment and employability status of the 2019 BSE graduates and identified the competencies they adequately acquired and deemed vital for work. It used descriptive design, and data were collected from the 103 graduates through a Google form with open and closed-ended questions administered between November and December 2020. Results revealed that most of the graduates had been employed in teaching and teaching-related jobs but mostly in contractual arrangements within the first and second six months after graduation. Many had their first jobs with meager salaries from the private sector. Communication, pedagogy, information communication technology, time management, and flexibility were the top competencies they adequately acquired and were beneficial in work. The study concluded that these graduates had acquired 21st-century skills in their respective degree programs. These results have corresponding implications for future research in confirming the most employable skills in secondary teaching. As recommended, classroom instruction might emphasize the development of these skills. Eventually, these become the competitive advantage and employability capitals of future graduates. Administering the licensure examination and the release of its results can be done within the first three months after graduation to lessen the cost of waiting.
Analysis of IT Acceptance Levels, ICT Attitudes, and Individual Innovation Levels of Special Education Teachers and their Opinions
Authors: Gümüş Muhammed Murat , Çakır Recep , Korkmaz Özgen , Uğur Erdoğmuş Feray
Published: August 2021

The purpose of the study is to determine the relationships between teachers' ICT acceptance levels, ICT attitudes and individual innovation levels and to investigate their opinions. Mixed method research study including qualitative and quantitative data collection and analysis techniques is used. In this study, an interview form was used to get the opinions of the teachers with the help of Teachers ICT Attitudes Scale (TICTAS) developed by Aydın and Semerci (2017), Teacher Candidates IT Acceptance Scale developed by Baydaş (2015) and Individual Innovation Scale adapted to Turkish by Kılıçer and Odabaşı (2010). 201 special education teachers (35.8% male and 64.2% female) participated in the study. In line with the findings obtained in the study, there is no difference in the attitudes of gender, age, professional seniority and branch variables towards special education teachers' information and communication technologies. Moreover, there is positive relationship was found between ICT attitudes and IT acceptance levels. In addition, teachers expressed their opinions on the fact that information and communication technologies extend the special education students' attention span. Therefore, it is thought that the relationships between teachers 'ICT attitudes, ICT acceptance levels, and innovation levels affect the attention and focus times of special education students and will have a greater impact on students' academic success. On the other hand, it is suggested to carry out more comprehensive studies such as this study to improve the ICT attitudes, ICT acceptance and innovation levels of special education teachers. In addition, it is thought that providing in-service courses that are structured and better equipped to improve the ICT attitudes, ICT acceptance levels and innovation levels of special education teachers will be more effective for the special education field.
Structural Relationships between Coping Strategies, Self-Efficacy, and Fear of Losing One’s Self-Esteem in Science Class
Authors: Mete Pelin
Published: August 2021

This study aimed to investigate the relationship between coping strategies (positive coping, projective coping, non-coping and denial coping), self-efficacy, and fear of losing one’s self-esteem among secondary school students in science course. The study group consisted of 381 students studying in a large city located in the eastern part of Turkey. The data of the study were obtained using Academic Coping, Self-efficacy, Fear of losing one's self-esteem scales. Data were analyzed with the structural equality model using the Amos program, and the proposed relationships between variables were tested. According to the results obtained from the research, it was found that the positive coping and projective coping strategy predicted positively and the non-coping strategy negatively on self-efficacy. Self-efficacy negatively predicted the fear of losing one’s self-esteem. Additionally, positive coping, denial coping, and non-coping strategies were observed to positively predict the fear of losing one's self-esteem. Additionally, positive coping, projective coping, non-coping, and denial coping strategies variables together explained 28% of the variance in self-efficacy. The self-efficacy and all of the coping strategies explained 48% of the variance in fear of losing one’s self-esteem.
Social Media Usage Experiences of Young Adults during the COVID 19 Pandemic through Social Cognitive Approach to Uses and Gratifications
Authors: Onat Kocabıyık Oya
Published: August 2021

Since social media is a powerful information transfer and sharing tool in this modern world, it has become more used especially during the pandemic. It may be important to examine the use experiences of individuals in order to understand the impact of social media on individuals during the pandemic period. For this reason, the aim of the study is to examine the experiences of social media use in the pandemic of young adults who use social media actively in detail with thematic analysis. The study group of the research consists of 52 young adults between the ages of 20 and 25 studying at the university. In line with the thematic analysis, four main themes are found: "reasons for using social media", "shares", "social comparison", "self-regulation and addiction". Each theme is explained in the context of the relevant literature.
Faculty’s Use of Social Media in Flipped Classrooms: A Mixed-Method Investigation
Authors: Alharthi Majed , Zhang Ke
Published: August 2021

This paper reports a sequential mixed-method study on Saudi Arabian (SA) faculty’s use of social media (SM) in flipped classrooms (FC). The study also examined SA faculty’s related attitudes and identified factors that had limited faculty use of SM in Saudi higher education. In particular, the study explored how SA faculty used SM to address students’ needs and preferences as per the Read, Reflect, Display and Do (R2D2) framework. 391 eligible SA faculty members (199 male and 192 female) participated in the online survey, among which 8 (4 male and 4 female) were also selected for individual, semi-structured interviews afterwards. A wide range of factors were identified to understand what may have prevented or limited faculty’s SM uses in teaching. Research and practical implications were discussed, as well as suggestions to promote the use of SM for teaching in SA and countries with similar cultures.
Pre-service Teachers' Experiences of Dialogical and Reflective Supervision through Digital Technology
Authors: Paksuniemi Merja , Keskitalo Pigga , Frangou Satu-Maarit , Körkkö Minna
Published: August 2021

In this article, we review teaching practice supervision methods using Microsoft Teams as a digital, dialogic, and reflective tool in the supervision of the pre-service teachers’ teaching practicum. We applied qualitative thematic analysis to data from conversations and supervision discussions between 40 pre-service teachers and their supervisor on the Microsoft Teams chat channel to investigate pre-service teachers’ experiences of teaching-practice supervision through digital platforms. The dialogical, digital, deep (DDD) pedagogical framework guided the analysis of the data. We found Microsoft Teams enhanced pre-service teachers’ written dialogue, increased peer support, and enabled and deepened collective group dialogue, leading to increased understanding of teaching and learning through analyzing, interpreting, evaluating, producing, and creating knowledge.
Secure Channel for Sharing Datasets by using Privacy-Preserving Integration Method
Authors: Narayana G Sriman , Kumar Kuruva Arjun
Published: August 2021

In privacy-enhancing technology, it has been inevitably challenging to strike a maintain balance between privacy, efficiency and usability (utility). We propose a highly practical and efficient approach for privacy-preserving integration and sharing of datasets among a group of participants. At the heart of our solution is a new interactive protocol, Secure Channel. Through Secure Channel, each participant is able to randomize their datasets via an independent and untrusted third party, such that the resulting dataset can be merged with other randomized datasets contributed by other participants group in a privacy-preserving manner. Our process does not require any public or key sharing between participants in order to integrate different datasets. This, in turn, leads to a user can understand and use easily and scalable solution. Moreover, the accuracy of a randomized dataset which are returned by the third party can be securely verified by the other participant of group. We further demonstrate Secure Channel’s general utilities, using it to construct a structure preserving data integration protocol. This is mainly useful for, good quality integration of network traffic data.
Spinal cord trauma by air gun projectiles in five cats
Authors: Martins Araújo Bruno , de Almeida Amorim Marcela Maria , Passos Costa Sérgio Diego , L. F. Cardoso Rocha Nadyne , G. Rodrigues dos Santos Thays , R. F. Barbosa Lopes Rallyson , Cardoso Diogo Camila , Tudury Eduardo Alberto
Published: August 2021

Spinal cord trauma induced by ballistic projectiles is considered uncommon in domestic animals, particularly in cats. Outdoor, and indoor-outdoor cats are at greater risk of receiving gunshot wounds. Despite their small size, moderate speed and poor aerodynamic design, projectiles from compressed air guns (pellet guns) can cause severe injury. Treatment and prognosis of animals presented with gun-related injuries can vary considerably, depending on the affected spinal segment location of the lesions, and extent of tissue damage. Due to the unusual occurrence, of this type of trauma in feline patients, the goal of this report is to describe the neurologic, radiographic, and surgical findings in five cats with spinal injury secondary to air gun projectiles.
n Adaptive Sparse Array Beamforming Algorithm Based on Approximate L0-norm and Logarithmic Cost
Authors: Wang Haixu , Li YingSong
Published: August 2021

This paper introduces a constrained normalized adaptive sparse array beamforming algorithm based on approximate L0-norm and logarithmic cost (L0-CNLMLS). The proposed algorithm can control the sparsity of the array by introducing an approximate function of L0-norm. In addition, the introduction of logarithmic cost improves the stability of the algorithm as well as the convergence rate of the algorithm. The sparsity of the array can be controlled when adjusting related parameter in the proposed algorithm. Simulation results show the better performance of L0-CNLMLS compared with some conventional algorithms.
Miniaturized Wideband Bandpass Filter based on Capacitor-loaded One-eighth Wavelength Coupled Line
Authors: Shi Jin , Dong Jiancheng , Xu Kai , Zhang Lingyan
Published: August 2021

A novel miniaturized wideband bandpass filter (BPF) using capacitor-loaded microstrip coupled line is proposed. The capacitors are loaded in parallel and series to the coupled line, which makes the filter just require one one-eighth wavelength coupled line and
achieve filtering response with multiple transmission poles (TPs) and transmission zeros (TZs). Compared with the state-of-the-art microstrip wideband BPFs, the proposed filter has the advantages of compact size and simple structure. A prototype centered at 1.47 GHz with the 3-dB fractional bandwidth of 86.5% is demonstrated, which exhibits the compact size of 0.003λ2 g (λg is the guided wavelength at the center frequency) and the
minimum insertion loss of 0.37 dB.
A Wideband and Wide Scanning Tightly Coupled Dipole Array with Meta-Surface Wide-Angle Impedance Matching
Authors: Ye Yuan , Huang Zhao , Jiang Yun , Bian Li-an , Zhu Chang , Huang Jing , Yuan Nai
Published: August 2021

A low profile ultra-wideband tightly coupled dipole array is studied. The antenna elements are fed by Marchand baluns of small size and low cost. A metasurface based wide-angle impedance matching (MSWAIM) layer is introduced to replace the traditional dielectric WAIM, improving the beam scan performance and reducing the antenna profile. The simulation shows that the proposed antenna array can operate over 2.4-12.4 GHz, approximately 5:1 bandwidth with maximum scanning angle of 50o for both E plane and 45o for H plane. The antenna profile above the ground is only 0.578λH at the highest operating frequency. This antenna array can find its application in the forthcoming massive
MIMO beamforming systems for 5G.
Train-mounted Broadband Monopole Antenna for 5G Communication
Authors: Li Hao , Xu Lu , Qian Feng , Zhou Yong
Published: August 2021

As a convenient and efficient public transport system, high speed railway (HSR) was rapidly deployed in China. Since the fifth generation (5G) mobile communication system is commercially applied, it is necessary for mobile terminals antennas to cover multiple operating bands to be compatible with various communication systems. Here a HSR-mounted broadband and high-gain monopole antenna is proposed. By using the meander technology and introducing the tapered structure, the proposed antenna operates over a bandwidth of 694-960 MHz and 1350-5975 MHz (VSWR<1.8), which covers both 2G-5G mobile communication and WiFi frequency bands. The dimensions of the proposed
antenna are 400 mm × 330 mm × 78 mm. The measured average gain is 6.11 dBi over the entire bandwidth.
A Low-Profile and Beam-tilted Continuous Transverse Stub Array Antenna at W-band
Authors: Chu Demiao , Xiong Yujun , Li Ping
Published: August 2021

This paper presents a low-profile, high gain, beam-tilted continuous transverse stub (CTS) array antenna at W-band. The antenna compromises 32 radiating slots and is fed by a parallel plate waveguide (PPW) network with a linear source generator. To deflect the outgoing beam, the principle of linear array scanning is adopted to design inverted T-type structure in each stub to introduce wave path difference. PPW network allows the antenna to obtain lower profile compared to other transmission lines. The design procedure, and the antenna characterization are described. The main beam of the antenna is titled 12 degree in H-plane. The simulation and measured results show that this antenna achieves peak gain of 32.4 dB and a 12 degree beam tilt angle at 99GHz. S11 parameters of the antenna is less than -10 dB in a broadband from 96 GHz to 103 GHz. This antenna has an advantage of miniaturization over other high-gain antenna solutions. The promising performance of this proposed CTS antenna reveals the possible candidate for Millimeter wave (MMW) telecommunication applications.
Robust Adaptive Beamforming based on Automatic Variable Loading in Array Antenna
Authors: Yang Bin , Li Wenxing , Li Yuanyuan , Mao Yunlong
Published: August 2021

Diagonal loading technology is widely used in array antenna beamforming because of its simple method, low computational complexity and the ability to improve the robustness of beamformer. On this basis, this paper proposes a robust adaptive beamforming
method based on automatic variable loading technology. The automatic variable loading matrix (AVLM) of the method is composed of two parts. The non-uniform loading matrix dominants when the input signal-to-noise ratio (SNR) is small, effectively control the influence of noise disturbance without affecting the ability of array antenna to suppress interference. The variable diagonal loading matrix dominants when the input SNR is high
to improve the output performance of array antenna. Simulated results show that compared to other methods, the proposed method has better output performance for
both low and high input SNR cases.
High-Q Active Microwave Sensor Based on Microstrip Complementary Split-Ring Resonator (MCSRR) Structure for Dielectric Characterization
Authors: Gan Hong-Yi , Zhao Wen-Sheng , Wang Da-Wei , Wang Jing , Liu Qi , Wang Gaofeng
Published: August 2021

This paper presents an active microwave sensor for the characterization of dielectric materials. The sensor is consisted of a microstrip complementary split-ring resonator (MCSRR) structure and an active feedback loop. The loop uses an amplifier to generate
negative resistance to compensate the resonator’s loss and increase the loaded quality factor. The developed sensor possesses the advantages of high quality factor, ultra-small electrical size, and high sensitivity. A prototype of the sensor is fabricated and measured for validation.
Effects of Climate Change on Sheep and Goat Breeding
Authors: TÜFEKCİ Hacer , TOZLU ÇELİK Hilal
Published: August 2021

Climate change is seen as a significant threat to the sustainability of many species, ecosystems and livestock production systems in many parts of the world. With the rise of average temperatures at the global level, a number of effects occur. These effects lead to different changes in climate, regionally and globally. Livestock sector in Turkey is the leading sector that is most affected by the global climate change due to the predomination of rural economic structure and industries based on developing livestock breeding. Health and welfare in animal production are an integral part of environmental sustainability. Extreme events and seasonal fluctuations affect the welfare of the animals and cause a decline in yield and reproductive performance. Sheep and goat are animals that can make the best use of pasture and use it in every season of the year. In addition to the effects of climate change on ecosystems, it is inevitable that it will create important problems on the natural resources that form the basis of animal production. Climatic characteristics such as temperature and precipitation patterns have a significant impact on the availability of pasture and other resources throughout the year of animals. In this study, it was aimed to reveal the effects of climate change on animal husbandry and especially on sheep and goat breeding.
Kadınlarda B-Fit™ egzersizlerinin vücut kompozisyonuna etkisinin yaşa göre karşılaştırılması
Authors: Günay Ali , İlhan Odabaş Hatice , Kıstak Altan Benil , Usta Gülçin
Published: August 2021

Amaç: Çalışmanın amacı 18-59 yaş grubu kadınlarda B-Fit™ egzersizlerinin vücut kompozisyonuna etkisinin yaşa bağlı olarak incelenmesidir.

Gereç ve Yöntemler: Çalışmaya 18-59 yaşları arasında (yaş ortalaması: 29.4±9.7 yıl; boy ortalaması: 163.4±5.3 cm; vücut ağırlığı ortalaması: 71.9±14.4kg) bulunan B-Fit™ spor salonunda spor yapan 52 kadın gönüllü olarak katıldı. B-Fit™egzersizleri üç ay boyunca haftada altı gün, günde 30 dakika uygulandı. B-Fit™ egzersizleri dokuz istasyondan oluşturuldu ve üç set uygulandı. Setler 30 s B-Fit™ ekipmanı, 30 s aerobik egzersizler ve 1 dk dinlenme olmak üzere toplam 10 dk sürdü. Araştırmada vücut kompozisyonunun ölçümlerinde biyoelektrik empedans tartı aleti (Tanita BC-730), çevre ölçümlerinde mezura (0.1 cm) kullanıldı; yağ oranı, yağsız beden ağırlığı, yağ ağırlığı, vücut kütle indeksi (VKİ), bel kalça oranı hesaplandı. Beden kompozisyonu ölçümleri başlangıçta ve her ayın sonunda, dört kez alındı. Verilere IBM SPSS 24.0 programı, yaş grupları arası karşılaştırmalarda Kruskal Wallis testi, ikili karşılaştırmalarda ise Mann Whitney U testi uygulandı (p<0.05).

Bulgular: Yaş gruplarına göre yapılan karşılaştırmalarda yağ oranı, yağ ağırlığı, VKİ, bel çevresi ve bel kalça oranında anlamlı farklılıklar saptandı (p<0.05). Beden çevre ölçümlerinden karın ve bel çevresinde 2. ve 3. aylarda yaşa göre anlamlı farklılıklar belirlendi (p<0.05). Yağsız beden ağırlığında yaşa göre anlamlı bir farka rastlanmadı (p<0.05).

Sonuç: Çalışmada 20 yaş ve altı ile 40 yaş ve üzeri gruplar arasında egzersiz öncesinde yağ oranı ve yağ ağırlığında farklılaşma gözlendi. B-Fit™ egzersizleri sonucunda ise VKİ, bel çevresinde ve bel kalça oranında dört hafta sonra her yaş grubunda azalma olduğu gözlendi.