bluuebunny/crossref_metadata_2025 huggingface dataset:
Whole Body FDG PET-CT in the Evaluation and Management of Cardiac Sarcoidosis and Isolated Cardiac Sarcoidosis
Authors:   Department of Diagnostic Imaging, Division of Nuclear Medicine and Molecular Imaging, Qatar, M Djekidel
Published: April 2021

Introduction Sarcoidosis is a multisystem inflammatory disease defined histologically by the formation of non-caseating granulomas. Cardiac involvement can be seen in up to 5% of cases [1]. These patients are at a high risk for major cardiac events [1]. Diagnosing and monitoring Cardiac Sarcoidosis (CS) is not trivial but can be currently accomplished by a combination of cardiac MRI and cardiac FDG PET-CT scanning [2]. With appropriate patient preparation, cardiac FDG PET has a high sensitivity for detecting cardiac lesions but also extra-cardiac lesions and for monitoring the efficacy of treatment. Discussion Current standard clinical practice consists of acquiring dedicated, limited field of view cardiac FDG PET scans. This would cover the heart and immediately adjacent thoracic structures. Although this is of great value and used with great success to diagnose and monitor cardiac sarcoidosis, it fails to assess the patient’s disease in a holistic manner. Still with this limited field of view, several reports including ours have described a high rate of extra-cardiac findings. We reviewed a series of sixty-five PET-CT scans of 54 patients referred for CS evaluation. These were performed between September 2010 and April 2013 at Yale New Haven Hospital and we found extra-cardiac findings were present in 92.3% of scans (n=60). Overall disease distribution is summarized in (Table 1). Highlight some of these extra-cardiac findings (Figures 1-4). 52.3% of these patients were asymptomatic at the time of the scan. CS was diagnosed in 50.8% of patients (n=33). All the patients (100%) with CS had extra-cardiac findings. Additionally, extra-cardiac findings were present in 48.3% of the scans when there was no cardiac involvement. In our cohort, we had no cases of Isolated Cardiac Sarcoidosis (ICS).
Methylene Tetrahydrofolate Reductase (MTHFR) Mutation in a Young Patient with Stroke: A Case Report
Authors:   Department of Family Medicine, VPS Lakeshore Hospital, India, S Neethu , MV Vidya ,   Department of Neurology, VPS Lakeshore Hospital, India, MJ Abdul Jalal ,   Department of Internal Medicine and Rheumatology, VPS Lakeshore Hospital, India
Published: April 2021

The etiology of young stroke is mainly contributed by genetic mutations in coagulation and metabolic pathways. We present a 29-year-old male, who presented with headache and weakness and later diagnosed to have posterior cerebral artery territory infarct. We highlight MTHFR mutation as an etiology of young stroke and the importance of family screening in such patients.
The Potential Effect of Conjugated Linoleic Acid on Endurance Exercise: A Mechanistic Review
Authors:   Tabriz University of Medical Sciences, Student Research Committee, Iran, OM Tavakoli-Rouzbehani , AM Rezaei ,   Tabriz University of Medical Sciences, Student Research Committee, Iran, E Safaei ,   Department of Clinical Nutrition, Tabriz University of Medical Sciences, Iran, AM Iranshani ,   Department of Clinical Nutrition, Tabriz University of Medical Sciences, Iran, M Amirpour ,   Department of Clinical Nutrition, Tabriz University of Medical Sciences, Iran
Published: April 2021

Introduction: The purpose of the present study was to appraise the results from disseminated human, animal and in vitro studies, and evaluate the possible effect along with the mechanism of CLA supplementation on endurance exercise. Methods: Related articles were searched on PubMed, Web of Science, Scopus, Embase, and Cochrane databases with defined keywords. Articles were assessed through their titles and abstracts. Finally, 11 articles were included based on inclusion and exclusion criteria. Results: Most of the studies were conducted on animals, and CLA was often supplemented along with training. Dosage and study duration vary for a broad range. Results showed various possible pathways on the effect of CLA supplementation on endurance exercise and related factors. Conclusions: It was indicated that CLA supplementation could prolong endurance performance by improving oxidant status, mitochondrial biogenesis, testosterone biosynthesize, fat oxidation, and change in body composition. Although CLA is being used in many countries and numerous studies have shown its safety, its long-term supplementation and effect need to be investigated. Also, further studies are required to identify the molecular mechanism in the human body.
Elevated Levels of the Pollutant PM2.5 in Crowded Subways of Cities with High COVID-19 Related Mortality-Has COVID-19 Gone Underground?
Authors:   University of Malta Medical School, Mater Dei Hospital, Malta, YM Baron
Published: April 2021

A nationwide study by [1] in the United States indicated a connection between long-term exposure to particulate matter PM2.5 and COVID-19 related mortality [1]. COVID-19 had been found to be adherent to particulate matter and it has been suggested that PM2.5 is an airborne co-factor in COVID-19 infection [2]. PM2.5 minimum and maximum levels in subways have been found several times higher than surface level. An elevated mean PM2.5 concentration of 381 μg/m³ was reported on the Victoria Underground, approximately 16 times higher than surface PM2.5 results [3]. The World Health Organization guideline recommends that PM2.5 levels should not exceed an average level of 25 μg/m³ 24-hour. The guideline stipulates that a PM2.5 concentration of 10 μg/m³/24 hr is the lowest level at which combined cardiopulmonary and lung cancer mortality have been shown to rise in response to chronic exposure to PM2.5 [4]. Commuter use of underground rail is significant. On a global scale the use of transport via subways represents around 11% of worldwide public transport. In New York, the daily ridership is 5 million and decreased by 90% after the institution of the New York lockdown [5]. More than 200 million passengers commute daily in the 156 underground networks around the world. With the movement of rural populations to urban areas as in China, the ridership is increasing exponentially as in subways of Beijing and Shanghai.
Calcifying Aponeurotic Fibroma in Children: Case Report
Authors:   Department of Anatomy Pathological, Laboratory Children’s Hospital Ibn Sina CHU, Morocco, A Kessab , B Chalouah ,   Faculty of Medicine and Pharmacy of Rabat (FMPR), Morocco, M Azzakhmam ,   Faculty of Medicine and Pharmacy of Rabat (FMPR), Morocco, M Benchakroun ,   Department of Orthopedic Surgery, Military Hospital, Morocco, AS Bouaabid ,   Department of Orthopedic Surgery, Military Hospital, Morocco, L Rouas ,   Faculty of Medicine and Pharmacy of Rabat (FMPR), Morocco
Published: April 2021

Calcifying aponeurotic fibroma is a rare benign fibrous tumour with characteristic histopathological features commonly observed in children and adolescents. It usually involves the most distal part of the extremities. Despite being a benign tumour, it has a high risk of local recurrence. Our case is a 14-year-old child, attending school, followed for chronic renal failure with small kidneys who presented with a pathological fracture in his left big toe with a lytic X-ray image. Calcifying aponeurotic fibroma is a rare tumor, usually located in the subcutaneous layer, but it can manifest as a diffuse intra-articular calcified mass with numerous bone erosions. Calcification is absent at the early stage, hence the importance of careful radiological examination and complete histological analysis in order to rule out a probable malignant tumor. The rate of recurrence is important, hence the importance of surgical excision with healthy margins.
Older Adults with First-Onset Schizophrenia: An Under-Recognized and Under-Served Patient Population
Authors:   Department of Psychiatry, University of Ottawa, Canada, J Thuswaldner
Published: April 2021

Schizophrenia is typically understood to be a disorder with onset in early adulthood, but nearly a quarter of patients are estimated to develop schizophrenia after age 40. Late-onset schizophrenia (patients with onset after age 40) and very-late onset schizophrenia (patients with onset after age 60) are historically an under-recognized and under-served population. Reasons for this are manifold, and may include barriers such as inconsistent terminology used to describe these patients, challenges with diagnosing, and lack of resources and research for these patients. To overcome these barriers, the DSM should include these subsets and provide clear diagnostic criteria. Incorporating these subsets into the learning objectives of medical school and residency programs would also promote further education and thus recognition of these patients. Finally, allocating funds towards resources and research in first-onset diagnosis of schizophrenia in adults over 40 would optimize treatment and improve understanding of this vulnerable patient population.
Pressure-Induced Jahn-Teller Switch in the Homoleptic Hybrid Perovskite [(CH3)2NH2]Cu(HCOO)3: Orbital Reordering by Unconventional Degrees of Freedom
Authors: Scatena Rebecca , Andrzejewski Michał , Johnson Roger , Macchi Piero
Published: April 2021

Through in-situ, high-pressure x-ray diffraction experiments we have shown that the homoleptic perovskite-like coordination polymer [(CH3)2NH2]Cu(HCOO)3 undergoes a pressure-induced orbital reordering phase transition above 5.20 GPa. This transition is distinct from previously reported Jahn-Teller switching in coordination polymers, which required at least two different ligands that crystallize in a reverse spectrochemical series. We show that the orbital reordering phase transition in [(CH3)2NH2]Cu(HCOO)3 is instead primarily driven by unconventional octahedral tilts and shifts in the framework, and/or a reconfiguration of A-site cation ordering. These structural instabilities are unique to the coordination polymer perovskites, and may form the basis for undiscovered orbital reorientation phenomena in this broad family of materials.
A Simple Theoretical Analysis of the Burn-out Times of an Isothermal Particle of Coal Char Under Air-Firing, Gasification and Oxyfuel Combustion in Fluidised Beds
Authors: Omojola Toyin
Published: April 2021

Coal combustion in air, gasification with carbon dioxide and oxyfuel combustion in oxygen/carbon dioxide mixtures was studied at high process temperatures in a bubbling fluidised bed reactor where burning is controlled by external mass transfer conditions. Theoretical analysis of the burn-out times of an isothermal particle of coal char in air is provided for the case where a fraction of carbon monoxide is oxidized close to the char particle. Burn-out time equations are provided for the gasification of char in carbon dioxide. Both burn-out time equations are compared to analytical equations derived for the oxy-fuel combustion of char particles in oxygen/carbon dioxide mixtures.
CHANGES IN SOCIAL LANDSCAPE OF WESTERN SOCIETY: NEW VOICES
Authors: Бушев Александр Борисович
Published: April 2021

В статье описывается изменение общественного дискурса западного общества, связанного с появлением сетевых движений #METOO и BLACK LIVES MATTER. Предложена авторская методика анализа дискурса - существование фактографической, языковой, аргументативной, невербальной рамок анализа, рамки анализа ключевых коммуникаторов, рамки символической, перформансной коммуникации, рамки виртуальной коммуникации, рамки обратной связи.

The article describes the changes in social discourse connected with movements #METOO и BLACK LIVES MATTER. The author suggests the theory of the discourse analysis - the existence of factual, linguistic, argumentative, non-verbal frames of analysis, the frame of key communicators, the frames of symbolic and performance communication, the frame of virtual communication, the feedback frame.
RHYTMIC SEMANTIC STRUCTURES «ORDER-CHAOS» IN THE LYRICS
Authors: Зипунов Андрей Вячеславович , Валганов Сергей Владимирович
Published: April 2021

Изучение авторской песни 1950-80-х привело к обнаружению семантических ритмов в текстах данного направления. Одна из подобных структур, ритм «порядок-хаос», отображает энтропийные процессы мироздания. Вследствие анализа нескольких произведений обнаружены две формы воплощения этой структуры: смысловое чередование оппозиций «порядок-хаос» в «Союзе друзей» Б. Окуджавы, а также особая пилообразная ритмика в песнях А. Мирзаяна и Е. Клячкина по стихотворным текстам И. Бродского.

The semantic rhythm of the type «order-chaos» manifests itself in Russian poetic texts. This structure maps the contradiction between entropy and negentropy processes of the universe. Several ways of manifestation of the given semantic rhythm were revealed as a result of four analyses of poetic works.
GLOBALIZATION THROUGH THE EYES OF YOUTH (BASED ON A STUDY OF RESPONDENTS FROM KUBAN AND CRIMEA)
Authors: Тучина Оксана Роальдовна , Черный Евгений Владимирович
Published: April 2021

Изложены результаты эмпирического исследования влияния глобализации на молодежь Кубани и Крыма. Для изучения отношения к глобализации использован авторский опросник отношения к глобализации, который включает в себя количественные шкалы, измеряющие отношение к глобализации и включенность в процессы глобализации, а также качественные шкалы, ответы на которые должны были позволить лучше понять особенности восприятия респондентами глобализации. Исследование выявило во всех эмпирических группах, кроме крымских татар, достаточно позитивное отношение к глобализации и высокую степень включенности в процессы глобализации. Результаты исследования репрезентации категории«глобализация» в массовом сознании молодежи показал, что данная категория связана прежде всего с образом единого экономического, информационного и коммуникационного пространства.

The article presents the results of an empirical study of the impact of globalization on the youth of Kuban and Crimea. To study attitudes to globalization, we used the author's questionnaire on attitudes to globalization, which includes quantitative scales that measure attitudes to globalization and involvement in the processes of globalization, as well as qualitative scales, the answers to which should allow us to better understand the characteristics of respondents ' perception of globalization. The study revealed a fairly positive attitude to globalization and a high degree of involvement in the processes of globalization in all empirical groups, except for the Crimean Tatars. The results of the study of the representation of the category «globalization» in the mass consciousness of young people showed that this category is primarily associated with the image of a single economic, information and communication space.
SOCIO-CULTURAL ASPECT OF INCLUSIVE EDUCATION
Authors: Махновец Сергей Николаевич
Published: April 2021

Представлены смысловые доминанты инклюзивного образования. Показано, что моральное благополучие человека (ребенка в особенности), его самооценка и - соответственно - эмоциональное состояние связаны с феноменом «принятия». Раскрыты проблемы, возникающие в практике реализации инклюзивного образования, и представлены некоторые подходы к их решению

The semantic dominants of inclusive education are presented. It is shown that the moral well-being of a person (especially a child), his self-esteem and, accordingly, the emotional state is associated with the phenomenon of«acceptance». The problems that arise in the practice of implementing inclusiveeducation are revealed and some approaches to solving them are presented.
CONTENT OF PEDAGOGICAL SUPPORT OR THE FORMATIONOF PROFESSIONAL AND ETHICAL CULTURE OF POLICE OFFICERS AT THE TURN OF THE XX-XXI CENTURIES
Authors: Вантеев Дмитрий Алексеевич
Published: April 2021

Рассмотрены трактовки содержания педагогического обеспечения процесса формирования этической культуры будущих сотрудников ОВД на рубеже ХХ-ХХI вв. как особого направления профессионально-педагогической деятельности. Посредством ретроспективного анализа установлено, что в рассматриваемый период были обоснованы педагогические ресурсы обеспечения процесса формирования профессионально-этической культуры сотрудников ОВД. Уделено внимание историко-культурным традициям как значимому элементу содержания педагогического обеспечения процесса формирования этической культуры сотрудников ОВД. Выявлены содержательно-структурные компоненты педагогического обеспечения профессионально- этической культуры сотрудников ОВД.

The interpretation of the content of the pedagogical support of the process of forming the ethical culture of future police officers at the turn of the XX-XXI centuries is considered. as a special area of professional and pedagogical activity. Through a retrospective analysis, it was established that during the period under review, pedagogical resources were justified to ensure the process of forming the professional and ethical culture of police officers. Attention is paid to historical and cultural traditions as an important element of the content of pedagogical support of the process of forming the ethical culture of police officers. The content-structural components of the pedagogical support of the professional and ethical culture of police officers were revealed.
ROLE-PLAYING PROJECT METHODOLOGY FOR TEACHING A FOREIGN LANGUAGE TO PRESCHOOLERS
Authors: Кошелева Екатерина Максимовна
Published: April 2021

Представлена концепция использования ролево-игровой проектной методики в области дошкольного иноязычного образования. Приводится обоснование ролевых игр и проектных методик как эффективного средства обучения английскому языку в дошкольном возрасте. Описываются виды игровых проектов и преимущества применения ролево-игровых проектов в обучении дошкольников. Приведены результаты экспериментального исследования с применением ролево-игрового проекта в ДОУ, показавшие достаточно сформированный уровень коммуникативных навыков, уровень познавательной и творческой активности, навыков коллективной и самостоятельной работы у дошкольников.

The article discusses the concept of using role-playing design methodology in the field of preschool education. The author notes that work on the development of role-playing games requires a well-coordinated, coordinated, compliance with the requirements and requirements of the preparation methodology. The author comes to the conclusion that a game project promotes the communication skills and reproductive speech and also forms the foundations for socialization and internal work. The stages and advantages of using the methods of such an unconventional lesson as a role-playing project in a preschool institution, taking into account age and psychological children are presented in detail. The article presents the results of an experimental study using a role-playing project that will contribute to the promotion of Russian pedagogical thought and will be taken into account when developing and testing new approaches and training programmes.
Justification of System Shape of Technical Diagnostics of Mobile Nuclearand Radiation Hazardous Objects, Exposed to Unscheduled Impacts
Authors: Gubeladze O. A. , Gubeladze A. R.
Published: April 2021

Development and creation of technical diagnostics promising systems allowing periodic and continuous characteristics and parameters monitoring of nuclear power plant on a moving unit without direct participation of staff is a priority task. The article discusses the possibility of creating monitoring systems, which will allow not only giving object state information and helping to prevent accidental situations.
Research of Secondary Circuit Welded Connections of the Engine Room by the Method of Scanning Contact Potentiometry
Authors: Adamenkov A. K. , Malakhov M. I. , Ozhereliev V. D. , Surin V. I.
Published: April 2021

The electrophysical system of non-destructive testing is tested on the NPP operating process equipment. The welded joints of the process pipeline located in the turbine hall are selected as the object of control. The results of the study confirm that the base metal of the welded joints is in a plastically deformed state. A comparison of the results of testing welded joints by scanning contact potentiometry and magnetic anisotropy methods is presented.
Operational Reliability of Plate Heat Exchangers Used in NPP
Authors: Kuzin S. A. , Boldyreva N. A. , Kravets S. B.
Published: April 2021

The paper analyses the main factors affecting the reliability indicators of plate heat exchangers used at NPPs of various factors, namely: materials of heat exchange plates and gaskets, types of working media, loading modes (temperature and pressure), and resistance of sealing elements to ionizing radiation. There are no regulatory methods for thermal and hydraulic calculations for plate heat exchangers used for nuclear power plants. Only separate test methods for plate heat exchangers are proposed. The main failures are identified: external leaks, internal leaks and cases of clogging of heat exchangers. In the conclusions of the work it is proposed to analyze information on the failures of plate heat exchangers operated at LNPP-2, NVNPP-2 and supplied by foreign and domestic firms for more accurate prediction of the operation of plate heat exchangers during operation at NPPs.
Independent Work Peculiarities in the Process of Foreign Language Study in Blended Learning Environment While Training Young Specialists for the State Corporation «Rosatom»
Authors: Zakharova L. V. , Bunames N. V. , Zarochintseva I. V. , Lupinogina Yu. A. , Melkikh M. A.
Published: April 2021

The article deals with the problems of foreign language independent work in technical high schools when training specialists for State Corporation «Rosatom» in conditions of mixed education, basic principles and methods of training using electronic systems, analyzes typical mistakes, current and final control.
The demographic features and outcome indicators of the Barbados HIV Pre-exposure Prophylaxis Program, 2018-2019
Authors: Best Anton , Rambarran Nastassia
Published: April 2021

Objective.

To assess the demographics, risk profiles and outcome indicators of one of the few government-supported programs on pre-exposure prophylaxis (PrEP) in the English-speaking Caribbean.

Methods.

Chart review of all persons enrolled into the national PrEP Program from its inception on March 1st 2018 to November 30th 2019, with a descriptive summary analysis of the data extracted.

Results.

Of the 134 persons enrolled into the program most identified as men who have sex with men (67.9%), followed by men who have sex with men and women (14.9%); there were 20 persons, mostly men (85%), in sero-discordant relationships. PrEP uptake was 96%; however, the continuation rate (continuing for three consecutive months after initiation) was 61.5%. Continuation status for many could not be ascertained due to loss-to-follow-up. PrEP-associated toxicity prevalence was 2.3%, although side-effects occurred in 52% (mostly gastrointestinal). HIV positivity during the study period was 1.5%.

Conclusions.

Uptake of Barbados’ national PrEP Program is excellent but fairly low continuation rates and the HIV positivity rate indicate the need for improved pre-ART initiation education and follow-up processes. Service utilisation is mainly by men who have sex with men, and provision expansion to other civil society partners and private practitioners, as well as increased public awareness could increase access by other high-risk groups.
Cannabis Use and Sleep: A look at the Expectations, Outcomes, and the Role of Age
Authors: Winiger Evan , Hitchcock Leah , Bryan Angela , Bidwell Cinnamon
Published: April 2021

Objectives: Estimate the associations between cannabis use with expectations of cannabis being a sleep aid, subjective sleep outcomes, and the influence of age on these relationships. Methods: In 152 moderate cannabis users (67% female, mean age = 31.45, SD = 12.96, age range = 21-70) we assessed the influence of cannabis use history and behaviors on expectations of cannabis being a sleep aid and subjective sleep outcomes via the Pittsburgh Sleep Quality Index (PSQI). We used moderation analysis to examine the role of age in the relationship between cannabis use and subjective sleep outcomes. Results: Cannabis use along with more frequent cannabis use were associated with increased expectations that cannabis use improves sleep (all β > 0.03, p < 0.04). Frequency of recent cannabis use and reported average THC or CBD concentration were largely not associated with subjective sleep outcomes. However, endorsing current cannabis use was associated with worse subjective sleep quality (β = 1.34, p = 0.02) and increased frequency of consuming edibles was associated with worse subjective sleep efficiency (β = 0.03, p = 0.04), lower sleep duration (β = 0.03, p = 0.01), and higher global PSQI scores (worse overall sleep) (β = 0.10, p = 0.01). Furthermore, age was determined to have a moderating influence on the relationship between increased concentration of CBD and both better sleep duration and sleep quality (both p < 0.03). Conclusion: Cannabis users have higher expectations of cannabis being a sleep aid, but few associations existed between cannabis use and subjective sleep outcomes with the exceptions of endorsing any cannabis use and frequency of edible use. Additionally, age may be an important moderator of the potential positive influence CBD concentration can have on sleep.
PMS Affective Symptoms Indirectly Linked to Cannabis Use Frequency and Problems via Cannabis Coping Motives
Authors: Stewart Sherry , Joyce Kayla , Tibbo Phillip , Hanzal Nacera , Good Kimberley
Published: April 2021

Background: Women with PMS have higher rates of substance use disorders but underlying mechanisms remain poorly understood. Research on the links of PMS to problematic substance use has largely omitted consideration of cannabis use. Design/Method: To fill these gaps, 87 cannabis using women (mean age = 28.9 years) completed a cross-sectional survey involving self-reports on their PMS symptoms on the Pre-Menstrual Scale – Short Form (PMS-SF), their usual motives for cannabis use on the Marijuana Motives Measure (MMM), their frequency of cannabis use in the last 30 days on the Cannabis Timeline Followback (C-TLFB), and their level of cannabis use problems on the Cannabis Use Disorder Identification Test (CUDIT). Analyses/Results: A series of multiple regressions were performed, along with Sobel tests of indirect effects, to examine the potential mediational role of cannabis motives in explaining the expected links of PMS symptoms with cannabis use frequency and problems. Separate models were run with cannabis use frequency and problems as outcomes, and with PMS affective and physiological symptoms as predictors. In each case, both coping motives and social motives (as a control to determine specificity) were tested as simultaneous mediators. PMS Affective (but not Physiological) symptoms were indirectly positively related to both cannabis use frequency and problems through Coping (but not Social) motives for use (Sobel tests = 2.01 and 2.26, respectively, p’s < .05). Discussion: Findings suggest that it is the affective symptoms of PMS (e.g., depressed mood), rather than the physiological symptoms (e.g., bloating, pain), that drive more frequent and problematic cannabis use in women. Moreover, the mechanism to explain this link appears to be coping (but not social) motives for cannabis use. Thus, those women with greater levels of PMS affective symptoms appear to use cannabis more frequently and problematically than other women by way of their greater use of cannabis to cope with negative mood.
Факторы неологизации в русском языке рубежа XX–XXI веков
Authors: Ждановa Еленa Александровна , Pацибурская Лариса Викторовна
Published: April 2021

В статье на материале лексикографических изданий начала ХХI века и современных медийных текстов рассматриваются основные пути пополнения словарного состава русского языка на рубеже ХХ–ХХI веков: внешние заимствования из других языков, семантическое калькирование и семантическая деривация, словообразовательная деривация. В результате исследования определены основные факторы неологизации в современном русском языке: внешние, экстралингвистические факторы, связанные с экономическими, социально-политическими, культурными и идеологическими изменениями в России на рубеже ХХ–ХХI веков, а также социально-психологические и внутриязыковые факторы, связанные с тенденциями к интернационализации, демократизации в языке, к языковой экономии и эвфемизации речи.
Study of the hardening kinetics of a mineral binder using electrical and optical methods
Authors: Rekhviashvili S. Sh. , Narozhnov V. V. , Mamchuev M. O. , Gaev D. S.
Published: April 2021

Hardening of mineral binders (cement, gypsum, lime, clay) is accompanied by the dissolution of minerals from the binder surface, their chemical interaction with water (the reaction of hydration and hydrolysis), and the formation of a solution saturated with respect to new hydrates. The reactions of minerals with water continue for some time even after saturation when water molecules are adsorbed by the solid phase of the binder. An «intermediate» colloidal system thus formed is characterized by the viscosity or plasticity depending on the water content in it. At the final stage, the processes of recrystallization and coalescence of the particles in a colloidal solution occur resulting in solidification and hardening of the solution and increased strength of the formed stone. We present the results of studying the hardening kinetics of the aqueous solution of a mineral binder using electrical and optical methods with high time resolution. Semi-aqueous gypsum was selected as a mineral binder. During hardening, the resistance and the capacitance of the samples were measured along with the visualization of the spatial structure of the solution. The mineral composition of water significantly affected the character of hardening. Noticeable fluctuations of the electrical parameters were detected in the experiments with mineral water. Optical measurements showed that solidifying solution is similar in structure to dendrites and fractal dimensionality of the structure almost remains the same during growth. It is also shown that at the initial stage the hardening proceeds by the logistics law. The results obtained can be used and recommended for practical application for determination of the kinetic parameters of hardening and in diagnostics of the structure of materials based on mineral binders.
Using of acoustic emission and video recording for monitoring the kinetics of damage upon compression of composite specimens
Authors: Matvienko Yu. G. , Vasil’ev I. E. , Chernov D. V.
Published: April 2021

The results of studying fracture of a batch of fiber-reinforced polymer (FRP) specimens upon compression are considered. The kinetics of damage and fracture of structural bonds in the FRP package under the impact of compressive load has been studied using acoustic emission (AE) in combination with video recording. Correlations between fractures occurring on the micro-, meso-, and macroscopic levels of the FRP package and the AE events registered at the same time, i.e., their energy parameters, shape, and spectrum were determined. New criterion parameters including the activity of registration of AE events in energy clusters and their weight content were analyzed. The structural-phenomenological approach, implemented by dividing the entire array of acoustic emission data into energy clusters provided the possibility of control of the kinetics of the material fracture using the registration activity and the weight content of AE events in clusters of the lower, middle and upper energy levels. Comparison of the AE events recorded at the stages of loading of the tested specimens with video footage of the fracture of structural bonds in the FRP package made it possible to set up a correspondence between the occurring damage and the recorded AE signals, their parameters, shape and spectrum.
Detection of the new SARS-CoV-2 variants of concern B.1.1.7 and B.1.351 in five SARS-CoV-2 rapid antigen tests (RATs), Germany, March 2021
Authors: Jungnick Sabrina , Hobmaier Bernhard , Mautner Lena , Hoyos Mona , Haase Maren , Baiker Armin , Lahne Heidi , Eberle Ute , Wimmer Clara , Hepner Sabrina , Sprenger Annika , Berger Carola , Dangel Alexandra , Wildner Manfred , Liebl Bernhard , Ackermann Nikolaus , Sing Andreas , Fingerle Volker ,   the Bavarian SARS-CoV-2-Public Health Laboratory Team
Published: April 2021

SARS-CoV-2 variants of concern (VOC) should not escape molecular surveillance. We investigated if SARS-CoV-2 rapid antigen tests (RATs) could detect B.1.1.7 and B.1.351 VOCs in certain laboratory conditions. Infectious cell culture supernatants containing B.1.1.7, B.1.351 or non-VOC SARS-CoV-2 were respectively diluted both in DMEM and saliva. Dilutions were analysed with Roche, Siemens, Abbott, nal von minden and RapiGEN RATs. While further studies with appropriate real-life clinical samples are warranted, all RATs detected B.1.1.7 and B.1.351, generally comparable to non-VOC strain.
Kombinasi Naive Bayes dan Metode Time Series Sebagai Peramalan Pergerakan Harga pada Perdagangan Valuta Asing
Authors: Huda Muhamat Maariful , Yusron Rizqi Darma Rusdiyan
Published: April 2021

Dalam perdagangan valuta asing, terdapat data yang dapat diakses secara bebas dan berkelanjutan. Data yang tersedia antara lain: harga pembukaan, harga tertinggi, harga terendah dan harga penutupan, data tersebut adalah variable penting dalam memprediksi pergerakan harga kedepan. Data yang tersedia bukan hanya dari data perdagangan valuta asing, akan tetapi juga terdapat data perilisan berita dan analisa dari ahli perdagangan valuta asing. Dari beberapa sumber, data yang didapat berupa teks dan angka. Pendekatan yang dilakukan dalam penelitian ini adalah peramalan dengan mengkombinasikan data teks dan data numerik. Kombinasi yang digunakan dalam peramalan adalah metode text mining dengan beberapa metode dalam time series, antara lain : simple moving average, weighted moving average dan exponential moving average. Rentang waktu peneliatian mulai 1 desember 2018 sampai dengan 31 januari 2019 dengan 3 pasang mata uang, EUR-USD, USD-JPY dan EUR-JPY. Hasil dari peramalan menggunakan metode time series akan dibandingkan dengan kombinasi dari metode time series dan klasifikasi naïve bayes. Hasil dari percobaan menunjukkan bahwa kombinasi dari metode time series dan klasifikasi naïve bayes memiliki akurasi peramalan yang lebih baik
EĞİTİM FELSEFESİ PERSPEKTİFİNDEN DİJİTALLEŞME VE EĞİTİM 4.0
Authors: ALKAYIŞ Ahmet
Published: April 2021

İnsanların var oluşundan beri toplumların, devletlerin gelişmesinde, kalkınmasında eğitimin ve felsefenin çok büyük bir rolü vardır. Bu nedenle her çağda olduğu gibi çağımızda da devletlerin bilgi toplumu olma yolunda ihtiyaç duydukları yetişmiş insan gücünün önemi artmaktadır. Enformasyon çağındaki gelişmeler sonucunda insan, önceki çağlara oranla daha hızlı teknolojik ve bilimsel gelişmelerle karşı karşıyadır. Çünkü felsefeyle birlikte beyin, sinirbilim, dijitalleşme ve yapay zekânın çok önemli olduğu bir çağda yaşam sürdürülmektedir. Bu nedenle çok eski çağlara gitmeden yakın dönemlere kadar; online eğitim, e-öğrenme, Eğitim 4.0, dijital güvenlik sistemleri, e-ticaret, beş duyu reklam, sanal gerçeklik ve yapay zekâ gibi kavramlar literatürde kullanılmıyordu. Ancak günümüzde bu alanlarla ilgili akademik çalışmaların yeterli olmadığı görülmektedir. Bu nedenle çalışmanın amacı her geçen gün bilimsel ve teknolojik ilerlemelerin olanağı ile eğitim alanındaki gelişmelerin birbirine entegre edilmesidir. Çünkü her toplumda endüstri, teknoloji ve eğitim gibi birçok alanda yakın ve uzak hedefleri vardır. Yakın ve uzak hedeflerin gerçekleşip gelişmesinde eğitim felsefenin önemi göz ardı edilmemelidir.
TÜRK HUKUK SİSTEMİNDE KONKORDATO UYGULAMASININ İSLAM HUKUKU VE EKONOMİSİ AÇISINDAN DEĞERLENDİRİLMESİ
Authors: ORHAN Ayhan , AKKUŞ Muhammed Sami
Published: April 2021

Ekonomik darboğazlar, siyasi ve sosyal problemler, ticaret hayatını olumsuz yönde etkilemektedir. Yaşanan olumsuzluklar nedeniyle satış hedeflerini tutturamayan işletmeler, maliyetlerini ve borçlarını karşılayamaz duruma gelebilmekte ve bu durum kapanma-iflas durumlarına yol açabilmektedir. Mali yapısı bozulan işletmelerin, yaşadıkları bu olumsuz durumdan kurtularak faaliyetini sürdürmesi ve ekonomi içerisinde kalmasının hedeflendiği birtakım yasal teşvikler ve uygulamalar söz konusudur. Bu uygulamalar arasında 2018 yılında yeniden işlerlik kazandırılan konkordato uygulaması; yargı organlarının gözetimi ve denetimi altında, işletmelerin mali durumunu düzeltmeleri, alacaklıları ile anlaşarak borçlarını ödemeleri, borçlarında tenzilat, indirim ve erteleme gibi imkanlar sunmaktadır. Çalışmamızda, Türk Hukuk sisteminde yıllar itibariyle bazı kanunlarla değiştirilen-kaldırılan konkordato uygulaması, İslâm Hukuk sistemi bağlamında değerlendirilmiştir. Kendisinden beklenen sonuçlar açısından konkordato uygulaması, borca batık işletme ve şahısların mali darboğazı aşması ve ekonomideki üretken durumunu devam ettirmesi bağlamında, işlevsel bir uygulama olduğu sonucuna varılmıştır.
KUTADGU BİLİG’DEKİ ÖNERMELER ÜZERİNE KLASİK MANTIK AÇISINDAN BİR İNCELEME
Authors: OSMAN Fikret
Published: April 2021

Kutadgu Bilig, Türk düşünce tarihinin en önemli eserlerinden biridir. Bu eserde pek çok konu üzerinde durulmakta; değişik bireysel ve toplumsal sorunlara ilişkin çözümler önerilmektedir. Söz konusu çözümler de, kitabın başlığında ifade edildiği gibi, adeta mutluluğa götüren birer yol olarak öngörülmektedir.

Bu makalede, düşünsel yönden oldukça zengin olan Kutadgu Bilig’deki anlatımlar incelenecektir. Bu bağlamda, bazı düşünürlere göre Antik felsefenin doğudaki yansımasının bir ürünü olarak görülen bu eserde, Antik Yunan’da ortaya çıkıp gelişen klasik mantıktaki önerme türlerinden hangilerinin örneklendiği araştırılacak; kitabın, düşünsel bakımdan sahip olduğu zenginliğe önermeler bakımından da sahip olup olamadığı gösterilmeye çalışılacaktır.
Construction and classification of \(p\)-ring class fields modulo \(p\)-admissible conductors
Authors:   Naglergasse 53 8010 Graz Austria, Mayer Daniel C.
Published: April 2021

Each \(p\)-ring class field \(K_f\) modulo a \(p\)-admissible conductor \(f\) over a quadratic base field \(K\) with \(p\)-ring class rank \(\varrho_f\) mod \(f\) is classified according to Galois cohomology and differential principal factorization type of all members of its associated heterogeneous multiplet \(\mathbf{M}(K_f)=\lbrack(N_{c,i})_{1\le i\le m(c)}\rbrack_{c\mid f}\) of dihedral fields \(N_{c,i}\) with various conductors \(c\mid f\) having \(p\)-multiplicities \(m(c)\) over \(K\) such that \(\sum_{c\mid f}\,m(c)=\frac{p^{\varrho_f}-1}{p-1}\). The advanced viewpoint of classifying the entire collection \(\mathbf{M}(K_f)\), instead of its individual members separately, admits considerably deeper insight into the class field theoretic structure of ring class fields. The actual construction of the multiplet \(\mathbf{M}(K_f)\) is enabled by exploiting the routines for abelian extensions in the computational algebra system Magma.
Prime and irreducible filters in strong quasi-ordered residuated systems
Authors:   International Mathematical Virtual Institute 6, Kordunaška Street, 78000 Banja Luka, Bosnia and Herzegovina, Romano Daniel A.
Published: April 2021

In this article, we continue our research on quasi-ordered residuated systems introduced in 2018 by S. Bonzio and I. Chajda and various types of filters in them. Some fundamental properties of strong quasi-ordered residuated systems are given in this article. In addition, the concepts of prime and irreducible filters in such systems are introduced and analyzed.
Internet’s handprint
Authors:   Huawei Technologies Sweden AB, Kista, Sweden, Andrae Anders S.G.
Published: April 2021

In this decade there will an unprecedented growth of generated data, computations, instructions, and operations. This growth may not compromise clean air, clean water and a sustainable energy and material usage, but rather facilitate these prerequisites for flora and fauna. There are many indications (expected trends and estimates) showing that the Internet Sector will be able to provide solutions to other Sectors such as Buildings, Transportation and Industry which will help reduce the total global consumption of energy and materials. For instance, products are replaced by virtual services e.g. by using e-readers instead of paperbacks, and transportation is avoided by online shopping or Internet meetings. This is more resource and energy efficient than before and entire sectors, like transport, industry, and agriculture can be optimized. Internet may foster new sustainable lifestyles which can lower the affluence despite certain rebound effects. The underlying idea is that e.g. human-related global greenhouse gas (GHG) supply can be significantly halted if existing and developing ICT Solutions are used in other sectors (and in the Internet infrastructure itself) to cause a handprint. Such solutions include products-sold-as-services, smart Grid and smart metering. Compared to earlier approaches, the 2020 transformative effects on smart work, land use and smart circularity are included in the discussion, as well as consequential LCA modelling. Internet’s handprint will be 4-7 times its footprint in 2030. The handprint is highly dependent e.g. on how large share of the buildings can adopt smart metering and the product to service rate. Internet will in itself use intelligent ICT solutions as well as neuromorphic, reversible and superconducting computing as well as nanophotonics to mitigate its own material and energy use. However, more importantly the intelligent ICT solutions should be used in the rest of the society to reach efficiency goals. Power saving is a highly efficient strategy for cost reduction in the Internet Sector itself and beyond.
Hermite-Hadamard-Fejér type inequalities for co-ordinated harmonically convex functions via Katugampola fractional integrals
Authors:   School of Natural Sciences, National University of Sciences and Technology, H-12 Islamabad, Pakistan, Mehreen Naila , Anwar Matloob ,   School of Natural Sciences, National University of Sciences and Technology, H-12 Islamabad, Pakistan
Published: April 2021

The aim of this paper is to establish the Hermite-Hadamard-Fejér type inequalities for co-ordinated harmonically convex functions via Katugampola fractional integral. We provide Hermite-Hadamard-Fejér inequalities for harmonically convex functions via Katugampola fractional integral in one dimension.
Deutsch paths and their enumeration
Authors:   Department of Mathematical Sciences, Stellenbosch University, 7602 Stellenbosch, South Africa, Prodinger Helmut
Published: April 2021

A variation of Dyck paths allows for down-steps of arbitrary length, not just one. Credits for this invention are given to Emeric Deutsch. Surprisingly, the enumeration of them is somewhat akin to the analysis of Motzkin-paths; the last section contains a bijection.
Using behavioral outreach to counteract administrative burden and encourage take-up of simplified disability payment rules
Authors: Hock Heinrich , Jones John T. , Levere Michael , Wittenburg David
Published: April 2021

Take-up of employment programs among people with disabilities can be limited by the administrative burdens of decision-making, which must factor in the complexities of how work affects disability cash assistance payments. This study presents evidence on using outreach motivated by behavioral research to encourage enrollment in a pilot initiative with the Social Security Administration that simplified Social Security Disability Insurance payment rules. Because enrolling would leave some beneficiaries worse off, informed enrollment decisions required understanding both the complexities of current rules and potential effects of the new demonstration rules. We sought to counteract bottlenecks stemming from decision-making burdens through increased outreach with tailored messaging. A randomized controlled trial was used to test two features of a reminder postcard. First, we compared fold-over postcards containing information about the demonstration to open postcards with more generic information, finding that fold-over postcards increased enrollment by around 25 percent (or 0.12 percentage points). Second, we compared an urgent message framing with no stated enrollment end-date to a deadline framing with an explicit enrollment cutoff date. Although the final enrollment rate was similar across timeline framing options, the urgent framing appears to have resulted in faster enrollment.
«Che volete mo’, ch’io guasti un libro?»
La rappresentazione di Filippo Mocenigo come vescovo filosofo nella Perfettione della vita politica (1579) di Paolo Paruta
Authors: Giani Marco
Published: April 2021

The Venetian political writer Paolo Paruta presented Filippo Mocenigo, the last Catholic Archbishop of Nicosia (Cyprus) before the Ottoman conquest, as an important character of his 1579 dialogue Della Perfettione della vita politica. Mocenigo, a most prominent member of the contemplative party, is depicted by Paruta as a sort of bishop-philosopher, very optimistic about the fact that Aristotelian philosophy (as it was still taught in the University of Padua in the mid-16th century) could help the search for human reason. Yet, Mocenigo was persecuted by the Roman Inquisition for his not-fully orthodox religious beliefs. In the essay, a comparison between Mocenigo as historical man and Mocenigo as Perfettione’s fictional character is developed.
Ulisse a Venezia
Odissea (V, 219-224) nella Rodiana di Andrea Calmo
Authors: Carpinato Caterina
Published: April 2021

The comedy Rodiana (Venice 1542), written by Andrea Calmo, opens with a quote in Greek from a passage of the Odyssey, uttered by a doctor from Rhodes. The purpose of this paper is to focus on the historical, linguistic, and cultural context of Venice in the mid-sixteenth century, during which Greeks and Greek language (ancient and spoken) played quite an important role. The analysis of the text allows to identify, albeit under the literary guise, some elements to understand several aspects of daily life in Venice in the age of Tintoretto.
The Relevance of Spatial and Temporal Connections and Relationships for the Formation of a Subtheory of Forensic Forecasting
Authors: Ustinova I. V.
Published: April 2021

The article examines the influence of spatial and temporal factors on forming a subtheory of forensic forecasting. The historical analysis of the formation of scientific knowledge about spatial and temporal connections and relationships in the light of the development of the general theory of forensic examination has been carried out. In this regard, the author proposed the term “time correlation of anticipated events” and introduced it into the general time system (from the past to the future) of the time intervals for the occurrence of certain adverse events or phenomena, the so-called precursor events, which by their appearance warn of upcoming events. The author highlights the considerable importance of technological forecasting in organizing human activity since this activity presupposes the future development of various kinds of technologies.
Forensic Molecular-Genetic Analysis of Objects of Biological Origin – a New Direction of Forensic Activity of the Russian Ministry of Justice
Authors: Smirnova S. A. , Omel’yanyuk G. G. , Storozhenko I. V. , Rybakova A. A. , Gulevskaya V. V.
Published: April 2021

The article addresses the importance and basic preconditions for the forming a new direction of forensic activity in the system of forensic institutions of the Russian Ministry of Justice a new direction of forensic activity - molecular-genetic analysis of the objects of biological origin. The authors present the advantages of DNA analysis - one of the most modern and efficient methods in investigating criminal cases. The article also demonstrates the potential of different methods of DNA-analysis for forensic investigations. The history of forensic DNA-analysis development in Russia and its features when examining the human, animal, and plant biomaterials are briefly discussed. The authors propose the definitions for the molecular-genetic examinations’ object and subject, formulate the model tasks, and suggest a list of sample questions for this study.