bluuebunny/crossref_metadata_2025 huggingface dataset:
Is Current Research Assisting the Implementation of Contemporary ICT in the Primary Mathematics Classroom?
Authors: Attard Catherine
Published: January 2021

The fast pace of development of ICT often results in primary teachers being expected to integrate new technologies effectively prior to the emergence of research findings that provide exemplars of best practice. This discussion paper explores contemporary research into ICT and primary school mathematics, and the issues that arise in relation to mobile technologies such as computer tablets in primary school classrooms. Although studies are beginning to emerge, this paper presents the argument that further research that would assist teachers in being prepared to teach mathematics with any technological tool would be more beneficial than working retrospectively to explore the use of specific devices that have already emerged in primary classrooms.
Performances and Skills of Cotabato City’s Mathematics Pre-service Teachers in Problem Solving
Authors: Dimasindel Mobarac R.
Published: January 2021

The performances in problem solving of mathematics pre-service teachers in Cotabato City was determined in this study using qualitative research design. The Polya’s theory (1954) on problem solving skills in terms of understanding the problem, devising a plan, carrying out the plan, and looking back was used in classifying and describing the performances of the respondents in the conducted problem solving skill test. Ten (10) mathematics preservice teachers from Cotabato City State Polytechnic College enrolled for the school year 2014-2015 were chosen as respondents using purposive sampling. The study then found out that the respondents’ level of proficiency in problem solving in terms of understanding the problem, devising a plan, and looking back is ‘Developing’ as they cannot define the problems adequately and cannot follow them to conclusion. However, they are at the level of ‘Approaching Proficiency’ in terms of carrying out the plan.
Innovative Learning in the Age of Industry Revolution 4.0
Authors: Gilbert Shirley , White Allan Leslie
Published: January 2021

In 2018 the Indonesian Ministry of Industry (KPRI) released a document ‘Making Indonesia 4.0’, in response to the Fourth Industrial Revolution (4IR), setting out the Indonesian aspirations, the five focus sectors, the ten national priorities, the economic benefits, the job creation, and the next steps to ensure Indonesia’s future development. While all the ten priorities are important, of specific interest to education are: priority 5 that aims to advance network and digital platforms; e.g. 4G to 5G, Fiber speed 1Gbps, Data center and Cloud, and; priority 7, which aims to redesign the education curriculum and create a professional talent mobility program using a STEAM approach. A transformation of the schooling system is needed which is different to a reform as reform concentrates upon the existing structure and system whereas a transformation works to create different systems and structures. The basis for success lies in the hands of Indonesian teachers and lecturers. This paper will also discuss developments in brain research, and the teaching behaviours that are conducive to producing students with higher order and creative thinking skills and the ability to solve complex problems.
Образ Николая Угодника в контексте феномена элитарности: агиографический и фольклорный дискурсы
Authors: Zavyalova Elena E.
Published: January 2021

Статья посвящена анализу элитных качеств личности, представленных в образе святого Николая Мирликийского. Перечисляются устойчивые канонические элементы композиции преподобнического жития, содержащиеся в сочинении Симеона Метафраста. Называются обстоятельства, оказавшие воздействие на развитие древнерусского культа святого. Выявляются изменения, которые внёс в трактовку образа архиепископа Димитрий Ростовский. Отмечаются исключительное место Николы в сознании восточных славян и трансформация канонической традиции, обоснованные спецификой дохристианских представлений. Выделяются типичные фольклорные нарративы о Чудотворце: об избавлении от смерти, исцелении, нахождении пропавших людей, счастливом замужестве, возвращении пропажи,оправдании невинно осуждённого, избавлению от пагубных пристрастий и т.п. Подчёркивается актуальная для жителей прибрежных районов связь Николая с водной стихией. Указывается, что «народный святой» до сих пор выступает в качестве персонажа легенд, быличек, заговоров, анекдотов, его имя фигурирует в текстах, размещаемых пользователями в соцсетях, блогах, агентах мгновенных сообщений. Обращается внимание на усиливающееся воздействие западноевропейской традиции, ведущей к ассимиляции обычаев. Приводятся примеры интернет-поздравлений, в которых явно прослеживается параллель между Чудотворцем и Санта-Клаусом. Делается вывод о том, что образ Николая Угодника является воплощением народной мечты о совершенном человеке, милостивом заступнике, олицетворением не мирской, но надмирной, вневременной власти, и в этом смысле его с полным основанием можно назвать элитарным. Рассмотренные компоненты культа мирликийского святителя в России демонстрируют, с одной стороны, его безусловную устойчивость, с другой – лабильность, способность органично развиваться под воздействием социально-экономических, политических, культурных факторов.
Images of Political Leaders of Advanced Foreign Countries in the Minds of Russian Citizens: General Analysis of Problematics
Authors: Brumshteyn Yuri M.
Published: January 2021

The importance of solving the problem of evaluation and management of foreign politicians’ images is justified. The content of the "image of the political leader of the advanced foreign country (PLAFC) in the minds of Russian citizens (RСs) concept is reviewed. The main "components" of these images, their formation peculiarities and RCs’ perception in information and telecommunication technologies development are described.

Purposes and methods (technologies) of PLAFCs’ image-building management in the RCs’ minds, ensuring the stability of these images over time; "promotion" of information on the PLAFCs in infosphere; ensuring its visibility and accessibility for RCs, including World Wide Web, are studied from the positions of interest of various groups of an individual person and legal entity (Russian and foreign).

Taking into account developing opportunities and the volume of usage of information and telecommunication technologies, the following issues were analyzed: change in the structure and characteristics of information about PLAFCs incoming to the RCs of fact; selection and usage of methods for controlling the composition and volume of incoming information.

It is testified that in RCs’ minds the images of PLAFCs are for medwith thematic composition, content, tonality and volume of information about the PLAFCs previously accumulated and newly received; by information evaluation approaches of different categories of RCs, by their age, social and economic group, level and scope of education and some other factors.
A DITADURA CIVIL-MILITAR EM SERGIPE: O QUE NOS FALAM OS JORNAIS? (1968-1978)
Authors: Barreto Mayra Ferreira
Published: January 2021

A pesquisa apresenta reflexões a respeito da utilização de jornais sergipanos como fonte para o ensino de história nos anos finais do ensino fundamental, valorizando-os como potencial didático para a aprendizagem histórica, especialmente na abordagem de temáticas e/ou objetos do conhecimento (BNCC, 2019), relacionadas com o período da Ditadura Civil-Militar no Brasil. O periódico escolhido foi a Gazeta de Sergipe, jornal que teve grande circulação na capital no período estudado, além de estar digitalizado e disponibilizado pelo Sistema de Bibliotecas da Universidade Federal de Sergipe (Sibiufs), acessível no seguinte endereço: jornaisdesergipe.ufs.br/. Espera-se com o trabalho refletir sobre as representações a respeito da Ditadura Civil-Militar no Brasil e suas relações com o presente, além de compreender aspectos da produção do conhecimento historiográfico.
ASSESSMENT OF ANTIMICROBIALS USAGE IN COMMERCIAL FARROW-TO-FINISH PIG HOLDINGS IN VOJVODINA REGION (SERBIA)
Authors: Prodanov-Radulović Jasna Z , Lauková Andrea , Grešáková Ľubomira , Pušić Ivan , Grgić Živoslav , Petrović Jelena , Stojanov Igor
Published: January 2021

The pig production is considered to be amongst the animal husbandry sectors with the highest antimicrobial usage. In Serbia, antimicrobials have wide application at pig farms as therapeutic but also as a prophylactic treatment. The aim of the research study was assessment of the antimicrobial usage in different stages of pig production in commercial farrow to-finish pig holdings located in Vojvodina Province (Serbia). In the research a total eleven pig holdings located in the Vojvodina Province were included. All investigated herds were single site farrow-to-finish production systems with minimum of 300 sows in the site. The data on prophylactic and therapeutic measures on the investigated farms were obtained from official farm treatment records provided by the veterinarians and/or farmers. The antimicrobials usage on the pig farms was recorded by product, administration route and animal production category. Analysis of recorded data revealed that different types of antimicrobials from almost all groups are applied. Breeding pigs (sows, boars) received less treatment compared to growing categories. Regarding different antimicrobials, a frequent use of cephalosporins and polymyxins  applied to growing piglets was detected. The group treatments were mostly preventive and antimicrobial usage often lack prior a precise diagnosis. The high amounts of macrolides and pleuromutilins (tiamulin), quite often in combination with tetracycline’s in fattening stage were notified. In conclusion, the significant level of prophylactic antimicrobial treatments in farrow-to-finish pig farms in Serbia is evident. The present study was initiated as a first step for comparing antimicrobial usage on herd level using available data.
Covid-19 and the Technology Bubble 2.0: Evidence from DCC-MGARCH and Wavelet Approaches
Authors: Özdurak Caner , Karataş Cengiz
Published: January 2021

There has probably never been as big a divergence between markets and economies as there is in the pandemic period. This paper is an attempt to test the ‘time-varying’ and ‘time-scale dependent’ volatilities of major technology stocks, FAANG and Microsoft, for analyzing the possibility of a second technology bubble in the markets. Consistent with the results of DCC-GARCH models, our analysis based on the application of the Wavelet approach also indicates that major technology behave and move as if they were all one stock in the pandemic period which makes us to be cautious about a second dotcom crisis since %26 of S&P 500 market cap is driven by FAANG and Microsoft stocks.

JEL classification numbers: C58, D53, O14.
Keywords: Dot-com crisis, tech bubble, DCC-GARCH, FAANG, Wavelet.
Сущность прокурорского надзора за исполнением законодательств о высшем образовании
Authors: Джураев Ихтиёр
Published: January 2021

В статье наряду с осуществлением прокурорского надзора за соблюдением законодательства научно проанализированы вопросы, связанные с предупреждением правонарушений в сфере высшего образования, развитием правосознания и правовой культуры студентов, участием в их обучении и воспитании,, а также неукоснительное соблюдение закона руководителем, преподавателем, сотрудником и студентами высших учебных заведений, уважительное отношение к предоставленным им правам в достижении конкурентоспособности высшего образования и выдвинуты соответствующие предложения.
Comparison between Water Hyacinth and Waste Cooking Oils as Source of Biofuel Production
Authors: M. Abd El-halim Esraa , M. Moustafa Mennatullah , A. Mahmoud Alaa , S. Ahmed Hager , A. Shalaby Emad
Published: January 2021

The problem of fossil fuel increases by time around the world, Biodiesel is an environmentally friend renewable diesel fuel alternative. The present work aims to determine the possibility for biofuel production from non-edible plant (Water hyacinth) and waste cooking oils in addition to potential uses as source for glycerol, pigments and antioxidant compound sources. this study aimed to investigate the feasibility of biodiesel production from water hyacinth using two solvent systems (chloroform: methanol, 2:1v/v and Hexane), Moreover, WCO applying one steps alkaline transesterification process using methanol, NaOH (0.25) and KOH (0.25, 0.5 and 1g) as a catalyst and hot distilled water for purification. both produced biodiesel (from Eichhornia and WCO) was characterized using FTIR and some chemical constant such as IV, SV and AV. The highest biodiesel produced from Eichhornia recorded with chloroform: methanol system when compared with Hexane. However, the highest biodiesel produced from WCO was recorded when using KOH (0.25g). Also, the obtained results reported the possibility for use glycerol produced from the both biofuel sources in body butter (makhmaria) production, Authors concluded that, the produced biodiesel from both sources was within the recommended standards of biodiesel fuel. Also, water hyacinth became useful in antioxidant compounds production, the contained pigments may be used as natural coloring substances in different fields.
Clima organizacional y satisfacción laboral de los trabajadores de la Institución Educativa Víctor Antonio Moreno Mosquera, 2018
Authors: Saltos Sarmiento Mercedes Heraclides , Pilaloa Tamayo Juan Carlos , Asian Canchis Hugo Enrique
Published: January 2021

La investigación científica sobre clima organizacional y satisfacción laboral de los trabajadores de la institución educativa Víctor Antonio Moreno Mosquera tiene como objetivo determinar si existe relación entre ambas variables. Tiene metodológicamente enfoque cuantitativo de corte transversal y bivariada. el alcance fue descriptivo correlacional y el diseño utilizado es no experimental. La muestra fue de 98 trabajadores de la Institución Educativa Víctor Antonio Moreno Mosquera. Para recolectar los datos se utilizó como técnica la encuesta para ambas variables se utilizó como instrumento el cuestionario, los cuales pasaron por un proceso de validación y fiabilidad para luego ser aplicado a los docentes. El procesamiento de datos se realizó con el software SPSS (versión 23).

Realizado el análisis se obtuvo que el coeficiente de Rho de Spearman, con un resultado de Rho=0,775**, interpretándose como relación entre las variables, con una ρ = 0.00 (p < 0.05), con el cual se rechaza la hipótesis nula por lo tanto los resultados señalan que el clima organizacional se relaciona significativamente con la satisfacción laboral de los trabajadores de la Institución Educativa Víctor Antonio Moreno Mosquera.
Fatigue Analysis of Aluminum Alloy Wheel Under Radial Load
Authors: Satyanarayana N. , Sambaiah Ch.
Published: January 2021

In this paper a detailed “Fatigue Analysis of Aluminum Alloy Wheel under Radial Load”. During the part of project a static and fatigue analysis of aluminum alloy wheel A356.2 was carried out using FEA package. The 3 dimensional model of the wheel was designed using CATIA. Then the 3-D model was imported into ANSYS using the IGES format. The finite element idealization of this modal was then produced using the 10 node tetrahedron solid element. The analysis was performed in a static condition. This is constrained in all degree of freedom at the PCD and hub portion. The pressure is applied on the rim. We find out the total deformation, alternative stress and shear stress by using FEA software. And also we find out the life, safety factor and damage of alloy wheel by using S-N curve. S-N curve is input for a A.356.2 material.
ANALYSIS OF SPOT WELDING ELECTRODE
Authors: PINGILI RAJANARENDER REDDY
Published: January 2021

Electric resistance spot welding has been extensively used for many years in the automotive and aerospace industry for joining body sheet components. Compared to other welding processes such as arc welding process, resistance spot welding is fast, easily automated and easily maintained. Accurate thermal analysis of spot welding electrode could permit critical design parameters to be identified for improved electrode life. It is a complex process where coupled interactions exist between electrical, thermal and mechanical phenomena. On the other hand, finite element method (FEM), which can deal with nonlinear behaviors and complex boundary conditions, provides a powerful tool for studying these interactions and has become the most important method for the analysis of resistance spot welding. In this study, a 2-D finite element model has been developed to predict the transient thermal behavior of spot welding electrodes. The model included heat transfer analysis, electrical field analysis and phase change during melting or solidification and temperature dependant material properties, and also their inter-dependence. The contacts at faying surface and at electrode – work interface, with temperature dependant contact resistances were modeled. Three types of electrode shapes – flat, pointed and dome nose were analyzed. Temperature distribution on each electrode shape was obtained from the finite element analysis. Maximum temperature of 2876 ºC was observed in dome nose electrode in 0.2 seconds of welding time. Dome nose electrode requires a minimum weld time of all the other electrode shapes to get the required nugget size, resulting in the least power consumption. Nugget size was predicted for each electrode shape. Experimental results obtained were in good agreement with the finite element analysis results.
EFFECT OF ARTIFICIAL ROUGHNESS ON HEAT TRANSFER AND FRICTION CHARACTERSTICS OF DOUBLE PASS SOLAR AIR HEATER
Authors: SHARMA AVDHESH , VARUN VARUN , BHARADWAJ GAURAV
Published: January 2021

Double pass solar air heater (DPSAH) consisted of rectangular duct provided with artificial roughness on both side of the absorber plate has been experimentally investigated. Circular ribs of aluminium wire is used to provide roughness to increase heat transfer coefficient between absorber plate and air. Ribs are attached to absorber plate at four different angle of attackbetween 30° to 75° . Experiment is carried out over the range of Reynolds Number from 4900 to 12000, and relative roughness height (e/Dh) varies from 0.022 to 0.044. Experimentally different values of Nusselt number(Nu). and friction factor(fr) have been determined for various parameters. The enhance-ment in heat transfer and increment in the friction factor values of Nusselt number and friction factor have also been compared with the smooth one.
CERAMIC CORES FOR TURBINE BLADES : A TOOLING PERSPECTIVE
Authors: R PRADYUMNA , H BAIG M A
Published: January 2021

Blade/vane components used in aerospace turbines are of twisted aerofoil shape, made by the process of investment casting, using Ni based super-alloy materials. These castings operate at turbine inlet temperatures (TET) close to the melting point of the alloy, in order to maximize thermal efficiency and thrust of the engine. The castings are made hollow, with intricate features such as turbulator, pin-fin, etc built-in to maximize the effect of heat transfer during forced cooling through internal passages. The hollow geometry in the castings is produced during the investment casting process by using a suitable ceramic core made from Silica or Alumina based mixes. These ceramic cores are high pressure injected by forcing the ceramic mix into dedicated molds or dies. Development of such dies is an involved process by itself, addressing issues right from ceramic mix behavior to manufacturability of the injection mould. The present paper attempts to highlight issues related to tooling development for ceramic cores used in investment cast turbine blade/vane components.
ANALYSIS OF ADHESIVELY BONDED SINGLE LAP RIVETED JOINT USING ANSYS
Authors: SURESH KALE , MURTY K.L.N. , KUMAR T.JAYANANDA
Published: January 2021

This project deals with the analysis of adhesively bonded single lap riveted joints. The present work involves the appropriate configuration and characterization of these joints for maximum utilization. The present study includes the effectiveness of bond line thickness, the bonded layer configuration. This is also applicable to dissimilar thickness joints, but in this project we have placed the adhesives at different places for riveted joints. The finite element technique was used throughout the analysis of present work. The present work showed that riveted bonded joints are superior in strengthening to the riveted joints. The riveted bonded joint seems to strengthen and balance the stress and distributed uniformly. This improves the efficiency and life time of the riveted joints; this is also applicable to dissimilar thickness and dissimilar metals joints for balancing, uniform distribution of stress and without any effect of corrosion on dissimilar metals. Modeling and analysis of adhesively bonded single riveted lap joint can be done by using ansys with a version of 13.0.
A limitação do poder de polícia pela função social: uma análise a partir do Recurso Especial n. 1.217.234-PB
Authors: Santos João Paulo Marques dos , Brasil Júlio César Mendes
Published: January 2021

Resumo: 

A função social da propriedade e da posse é um dever fundamental instituído pela Constituição e de observância obrigatória por todas as pessoas, físicas ou jurídicas. Uma dessas repercussões é a limitação do poder de polícia exercido pelo Estado na persecução do bem-estar social. Ratificando esse posicionamento, o Superior Tribunal de Justiça fixou o entendimento de que não goza de autoexecutoriedade o ato administrativo que vise a demolição administrativa de imóvel habitado em área de proteção ambiental. Todavia, esse precedente não redunda nesse único aspecto, uma vez que é possível perceber outras repercussões importantes no atuar do Estado, em especial duas, a saber: (i) a possibilidade de responsabilização do Estado que inobservar essa determinação; e (ii) a prevalência da função social da propriedade ou da posse exercida sobre aquele imóvel, em detrimento do bem-estar social perseguido pelo poder de polícia desempenhado pelo Estado. Portanto, mais um instrumento garantido à pessoa em detrimento da própria Administração Pública, uma verdadeira manifestação do Estado de Direito e da dignidade da pessoa humana.
Triguna (three qualities) personality model and two-factor conceptualization of self-compassion: a new insight to understand achievement goal orientations
Authors: Verma Yogendra , Tiwari Gyanesh , Pandey Ashutosh , Pandey Rakesh
Published: January 2021

Background

Although the three-dimensional Vedic personality model (Triguna) and self-compassion have been linked with a variety of life outcomes, little is known about their interplay in shaping goal orientations. We explored the interrelationships and interplay of the Triguna (Sattva, Rajas and Tamas) with positive and negative self-compassion in shaping the goal orientations of Indian students.

Participants and procedure

Using convenience sampling, 190 males (M = 20.13, SD = 2.21) and 187 females (M = 19.88, SD = 1.81) were assessed on self-report measures. Data were analysed using correlational statistics, factor analysis and path analysis.

Results

Factor analyses supported our speculation that the Self-Compassion Scale is best represented by a two-factor model (positive and negative). Positive self-compassion and Sattva Guna showed positive correlations with mastery and performance goals while negative self-compassion showed an opposite pattern. Rajas and Tamas Gunas were negatively correlated with mastery and positively with performance goals. Gender, Sattva Guna and positive self-compassion accounted for significant variance in mastery while gender, Sattva and Rajas Gunas and negative self-compassion contributed to performance-approach. Sattva Guna and self-compassion (positive and negative) contributed significantly to performance-avoidance. Path analysis revealed direct as well as indirect effects of the three Gunas on the goal orientations through positive and negative self-compassion.

Conclusions

The Triguna personality and two-factor conceptualization of self-compassion evinced their relevance in understanding the goal orientations of Indian students. Re-conceptualization of the Self-Compassion Scale and its interplay with Triguna personality dimensions in shaping the goal orientations of students need further verification in diverse and cross-cultural populations.
Psychometric properties of the Polish versions of the HEXACO-60 and the HEXACO-100 personality inventories
Authors: Skimina Ewa , Strus Włodzimierz , Cieciuch Jan , Szarota Piotr , Izdebski Paweł
Published: January 2021

Background

The HEXACO Personality Inventory-Revised (HEXACO-PI-R), available in 200-, 100-, and 60-item versions, has become one of the most frequently applied measurement tools for the assessment of basic personality dimensions.

Participants and procedure

In this study we examined the Polish versions of the HEXACO-60 and the HEXACO-100 inventories in a community sample of 522 individuals (aged 16-75, M = 32.02, SD = 14.15, 56.3% female). We verified the factor validity of both inventories with exploratory structural equation modeling. Additionally, we tested a six-factor solution on the HEXACO-60 items with principal axis extraction and we compared a factor matrix of the Polish adaptation of the HEXACO-100 facets with the factor matrix of the original version of the HEXACO-100 facets in an exploratory factor comparison analysis. We analyzed correlations between HEXACO domains and various models of personality traits, including the Big Two, Big Six, Big Five, and 10 Big Five as-pects.

Results

Internal consistency reliability coefficients for scales and subscales were satisfactory. The analyses supported the six-factor structure of the inventories and the results of correlation analyses were consistent with expectations.

Conclusions

The results indicate that the Polish versions of the HEXACO-60 and the HEXACO-100 inventories are reliable and valid in-struments for measuring basic personality traits in the HEXACO model.
Physical exercise and sex steroid hormones in breast cancer
Authors: Rocha-Rodrigues Silvia
Published: January 2021

Cumulative epidemiological evidence demonstrates that regular physical exercise is one of the most powerful lifestyle strategies used to mitigate the risk of developing breast cancer (BrC) and disease recurrence. The physical exercise recommendations for BrC survivors follow the general physical activity guidelines, 150 min of moderate-intensity exercise or 75 min of vigorous aerobic activity per week. However, to better understand the mechanisms underlying the positive effects of physical exercise is very important to prescribe and implement the most optimal training routine in BrC survivors. As far as we know, sex steroid hormonal response is one of the mechanisms why physical exercise exerts their effects with additional impact on systemic levels of cancer risk factors. Here, we review the evidence of the physical-exercise-mediated alterations in sex steroid hormones and additionally their ability to prevent or attenuate skeletal toxicities of induced by BrC, providing an overview of the effects of physical exercise on the BrC-related underlying mechanisms.
Relationship between functional movement screen, athletic and karate performance in adolescents
Authors: Krkeljas Zarko , Kovac Dimitrije
Published: January 2021

Purpose

The tests of athletic and functional performance are widely used to assess physical ability and set performance
goals. The aim of this study was to evaluate the relationship between functional movement and physical and karate-specific
performance in adolescents.

Methods

Karate technique, athletic performance, and Functional Movement Screen (FMSTM) were evaluated in 20 karateka
aged 10–15 years (age: 12.2 ± 1.9 years, height: 155.5 ± 16.5 cm, weight: 48.6 ± 19.5 kg). Correlation analysis determined
the association between the various tests, and stepwise linear regression established performance prediction models.

Results

Only individual FMSTM tests of deep squat, hurdle step, and push-up significantly correlated with gedan barai/
jaku zuki (r = 0.40, r = –0.61, r = –0.59, respectively) and the triangle step (deep squat: r = 0.43, push-up: r = –0.56). Muscular
endurance, power, and agility showed a significant (p < 0.05) correlation with karate side-step and gedan barai/jaku zuki.
The participants’ body mass and muscle endurance were good predictors of mawashi geri (r
2
= 0.51, p < 0.05), while body
mass was a strong indicator of gedan barai/jaku zuki (r
2
= 0.46, p < 0.05) and muscle endurance was a leading predictor
of gedan barai (r
2
= 0.34, p < 0.05).

Conclusions

A combination of functional and athletic tests may be used to assess young athletes’ predisposition to karate.
The training focus in young karateka should be on developing fundamental movement capacity along with fundamental
sport-specific skills to allow the young athlete’s natural physical development.
Socio-demographic and motivational correlates
of smoking status at term and postpartum
Authors: Moussaoui Lisa , Paillard Catia , Delattre Morgane , Desrichard Olivier , Kaiser Barbara
Published: January 2021

Background

Tobacco consumption during pregnancy has consequences for pregnant women and their fetus, as well as during the post-natal period. Many women stop their tobacco consumption during pregnancy, but statistics vary about the exact proportion, and a non-negligible number of them are still smoking at term. Moreover, tobacco relapse after birth is frequent. This study aims to provide epidemiological indicators about tobacco consumption at term and post-partum relapse in Switzer-land, and test risks factors associated with tobacco consumption at term, including Theory of Planned Behaviour variables for the motivational correlates. Losses to follow-up precluded testing risk factors associated with post-partum relapse.

Participants and procedure

Respondents were recruited at the pre-birth consultations at the hospital and answered the initial survey. They were con-tacted by email in the post-partum period two and six months after childbirth.

Results

10.6% of our sample were still smoking at the end of their pregnancy. The low-end estimate of relapse is 21.2% at two months (the high-end estimate being 74% after six months, using the worst-case scenario). Higher education level, in-come, and multiparity were descriptively associated with less tobacco consumption at term. Perceived behavioural control was the motivational variable differing the most between smokers and non-smokers, and with the broadest variance. Scores of attitudes and subjective norms had higher levels and were more consensual.

Conclusions

Incidence of tobacco consumption during pregnancy and during the post-partum period is problematic in Switzerland. One promising avenue is increasing pregnant women’s perceived behavioural control toward smoking cessation during preg-nancy and long-term abstinence.
The impact of pulmonary regurgitation on right ventricular size and function in patients with repaired tetralogy of Fallot and additional haemodynamic abnormalities
Authors: Śpiewak Mateusz , Petryka-Mazurkiewicz Joanna , Mazurkiewicz Łukasz , Miłosz-Wieczorek Barbara , Kowalski Mirosław , Biernacka Elżbieta K. , Hoffman Piotr , Marczak Magdalena
Published: January 2021

Introduction

Right ventricular (RV) outflow tract obstruction (RVOTO) was demonstrated to be protective against RV dilatation in patients with repaired tetralogy of Fallot and chronic pulmonary regurgitation (PR). We hypothesised that the presence of additional haemodynamic abnormalities (more than mild tricuspid regurgitation, residual ventricular septal defect) reduces this protective association. Accordingly, we aimed to assess the impact of PR on RV size and function in this population.

Material and methods

Consecutive patients with additional haemodynamic abnormalities after tetralogy of Fallot (TOF) repair, who had undergone cardiovascular magnetic resonance, were included.

Results

Out of 90 patients studied, 18 individuals (mean age 32.5 ± 10.7 years, 72.2% males) met the inclusion criteria. There were no differences in RV volumes and ejection fraction between patients with and without RVOTO. Neither PR fraction (PRF) nor PR volume (PRV) correlated with RV end-diastolic volume (r = 0.36; p = 0.15 and r = 0.37; p = 0.14, respectively, for PRF and PRV) or RV end-systolic volume (r = 0.2; p = 0.42 and r = 0.19; p = 0.45, respectively, for PRF and PRV). Similarly, no significant correlations were observed between PRF or PRV and RV ejection fraction (r = –0.04; p = 0.87 and r = –0.03; p = 0.9, respectively).

Conclusions

Additional haemodynamic abnormalities are associated with the abolition of the protective effect of RVOTO on RV size. There was no significant relationship between measures of PR and RV volumes in patients after TOF repair with concomitant haemodynamic abnormalities. These abnormalities acted as confounding factors in the assessment of the impact of pulmonary regurgitation on RV size and function.
Intravoxel incoherent motion magnetic resonance imaging: basic principles and clinical applications
Authors: Szubert-Franczak Aleksandra E. , Naduk-Ostrowska Martyna , Pasicz Katarzyna , Podgórska Joanna , Skrzyński Witold , Cieszanowski Andrzej
Published: January 2021

The purpose of this article was to show basic principles, acquisition, advantages, disadvantages, and clinical applications of intravoxel incoherent motion (IVIM) magnetic resonance imaging (MRI). IVIM MRI as a method was introduced in the late 1980s, but recently it started attracting more interest thanks to its applications in many fields, particularly in oncology and neuroradiology. This imaging technique has been developed with the objective of obtaining not only a functional analysis of different organs but also different types of lesions. Among many accessible tools in diagnostic imaging, IVIM MRI aroused the interest of many researchers in terms of studying its applicability in the evaluation of abdominal organs and diseases. The major conclusion of this article is that IVIM MRI seems to be a very auspicious method to investigate the human body, and that nowadays the most promising clinical application for IVIM perfusion MRI is oncology. However, due to lack of standardisation of image acquisition and analysis, further studies are needed to validate this method in clinical practice.
Clinical variability of the systemic juvenile idiopathic arthritis course: literature review based on case series
Authors: Boyarchuk Oksana , Kovalchuk Tetiana , Kovalchuk Nataliya , Chubata Oksana
Published: January 2021

Systemic juvenile idiopathic arthritis (sJIA) is a heterogeneous category of arthritis that frequently leads to disability and severe complications. The clinical cause of sJIA is very variable, which results in difficulties of disease recognition.

In this literature review based on case series we outline the main challenges in diagnostic of sJIA and macrophage activation syndrome (MAS). Using the 2016 criteria for MAS diagnostic allowed to consider MAS in the diagnostically challenging cases, that confirms their sensitivity in pediatric patients. The reviewed literature showed last updates for the improvement of classification, diagnostic of sJIA and its complication. The modification of JIA criteria, initiated by Paediatric Rheumatology International Trials Organisation, will allow to improve detection and treatment of JIA.

The presentation of this clinical cases and the discussion may be useful for understanding the disease cause and will help to differentiate sJIA and MAS from other disorders, and to improve treatment outcomes.
demographic	Profile	of	Endocrine	Disorders	in	Patients	Admitted	in Endocrinology Ward, Services Hospital Lahore
Authors: Arif Muhammad Maaz , -ud-Din Najam , Ali Amjad , Mazhar Nauman , Zahra Taskeen , Riffat Nayyer
Published: January 2021

Objective: To find out frequency and demographic profile of endocrine disorders in patients admitted in endocrinology ward at Services Hospital Lahore. Methods: The cross-sectional study was conducted at Services Hospital Lahore in Punjab, Pakistan. The study included 105 patients admitted in Endocrinology Ward. Data used was secondary and it was collected via medical record from June, 2018 to January, 2019. All information pertaining to patients was kept confidential. Ethical Review Committee permission was undertaken with final approval from Head of Department. Results: Demographic characteristics of patients included age, gender, and showed majority to be middle- aged females. The number of female cases were 65.71% (n = 69), while male cases were 34.29% (n = 36). The average age of all the patients was 40.62 ± 16.52. Majority of the patients with 76.19% (n = 80) cases were reported with having glucose homeostasis disorders with 65.71% (n = 69) cases having diabetes mellitus and 10.48% (n = 11) with hypoglycemia. Pituitary gland disorders comprised 8.57% (n = 9) of the cases with 5.71% (n = 6) diagnosed as pituitary tumors and 2.86% (n = 3) as hypopituitarism. Pituitary tumors further included Cushing syndrome with 4.76% (n = 5) cases and acromegaly with 0.95% (n = 1). Hypopituitarism comprised of hypocortisolism with 1.90% (n = 2) cases and Sheehan's syndrome with 0.95% (n = 1). 7.62% (n = 8) cases were reported with having thyroid disorders, with 4.76% (n = 5) having hyperthyroidism and 2.86% (n = 3) with hypothyroidism. 4.76% (n = 5) cases were diagnosed as sex hormone disorders comprising puberty disorders with 1.90% (n = 2) cases, fertility disorders with 1.90% (n = 2) and turner syndrome (inherited disorder) with 0.95% (n = 1). Calcium homeostasis disorders with 1.90% (n = 2) included one case each of parathyroid adenoma (parathyroid gland disorder) and osteoporosis (metabolic bone disease). Conclusion: The research indicated that glucose homeostasis disorders constituted highest in frequency, followed by pituitary gland disorders, thyroid disorders, sex hormone disorders and calcium homeostasis disorders. The current study urges us to act collectively in order to prevent endocrine disorders which can be done by promoting public education programs, proper counseling about its preventive measures and undergoing periodic medical examination. Key Words: Demography, Endocrine disorders.
Drypetes azulensis (Putranjivaceae) una nueva especie del Perú
Authors: Vásquez Martínez Rodolfo , Soto Shareva Yahn Carlos
Published: January 2021

En la reciente instalación de nuevas parcelas permanentes de monitoreo del proyecto: “Monitoring Protected Areas in Peru to Increase Forest Resilience to Climate Change”, (MonANPerú), en el Parque Nacional Cordillera Azul, en la región Loreto – Perú. Se descubrió a Drypetes azulensis Vásquez & Soto-Shareva, especie nueva de Putranjivaceae, que se describe e ilustra, asimismo se discute sus relaciones con otras especies afines.
Psicanálise virtual de crianças
Authors: Martins de Azevedo Maria José
Published: January 2021

Neste artigo, analisa-se o modo como a nova circunstância pandémica por Covid-19, que assolou a humanidade em 2020, constitui um «trauma» com repercussões na área de ilusão e no par analítico, criando um «novo contexto» ou um novo meio ambiente psíquico, no qual decorre a relação. A perda da fiabilidade e da confiança básica no mundo externo, que havia sido tomado por garantido, bem como a alteração do setting, representada pelas mudanças quer do local onde decorre a sessão, no consultório ou virtualmente, quer da introdução de novas exigências de proteção contra a infeção (uso de máscara, medidas de higiene), constituíram uma alteração profunda do quadro, «uma ferida traumática», criando um «novo meio normal» no qual se processa a análise. Esta interrupção do processo tal como era vivido anteriormente gerou uma descontinuidade, a qual se refletiu no psicanalista e na sua prática psicanalítica, no paciente e ainda no processo analítico. Uma psicopatologia pandémica baseada na regressão a estados obsessivos e paranoides precoces pôde emergir como expressão da descontinuidade e enquanto defesa contra a dor melancólica da perda do meio e do self. A estranheza, os estados confusionais, as angústias existenciais de aniquilamento, de perda do sentido da vida e da identidade, bem como a emersão da patologia dos objetos e a depressão precoce, ocorreram na clínica de crianças e de adolescentes até que a relação analítica, com o seu potencial criativo e terapêutico, retomasse o seu percurso. Três vinhetas clínicas, de análise de uma criança, de um adolescente e de um caso de supervisão, ilustram os constrangimentos ocorridos, nos quais tanto o paciente quanto o analista mergulharam.
Measured and modelled air quality trends in Italy over the period
2003–2010
Authors: D'Elia Ilaria , Briganti Gino , Vitali Lina , Piersanti Antonio , Righini Gaia , D'Isidoro Massimo , Cappelletti Andrea , Mircea Mihaela , Adani Mario , Zanini Gabriele , Ciancarella Luisella
Published: January 2021

Abstract. Air pollution harms human health and the environment. Several regulatory efforts and different actions have been taken in the last decades by authorities. Air quality trend analysis represents a valid tool in assessing the impact of these actions taken both at national and local levels. This paper presents for the first time the capability of the Italian national chemical transport model, AMS-MINNI, in capturing the observed concentration trends of three air pollutants, NO2, inhalable particles having diameter less than 10 micrometres (PM10) and O3, in Italy over the period 2003–2010. We firstly analyse the model performance finding it in line with the state of the art of regional models applications. The modelled trends result in a general significant downward trend for the three pollutants and, in comparison with observations, the values of the simulated slopes show the same magnitude for NO2 (in the range −3.0 ÷ −0.5 ug m−3 yr−1), while a smaller variability is detected for PM10 (−1.5 ÷ −0.5 ug m−3 yr−1) and O3-maximum daily 8-hour average concentration (−2.0 ÷ −0.5 ug m−3 yr−1). As a general result, we find a good agreement between modelled and observed trends; moreover, the model allowed to extend both the spatial coverage and the statistical significance of pollutants' concentrations trends with respect to observations, in particular for NO2. We also conduct a qualitative attempt to correlate the temporal concentration trends to meteorological and emission variability. Since no clear tendency in yearly meteorological anomalies (temperature, precipitation, geopotential height) was observed for the period investigated, we focus the discussion of concentrations trends on emissions variations. We point out that, due to the complex links between precursors emissions and air pollutants concentrations, emission reductions do not always result in a corresponding decrease in atmospheric concentrations, especially for those pollutants that are formed in the atmosphere such as O3 and the major fraction of PM10. These complex phenomena are still uncertain and their understanding is of the utmost importance in planning future policies for reducing air pollution and its impacts on health and ecosystems.
Substantial changes of gaseous pollutants and chemical compositions in fine particles in
North China Plain during COVID-19 lockdown period: anthropogenic vs meteorological
influences
Authors: Li Rui , Zhao Yilong , Fu Hongbo
Published: January 2021

Abstract. The rapid response to COVID-19 pandemic led to the unprecedented decreases of economic activities, thereby reducing the pollutant emissions. A random forest (RF) model was applied to determine the respective contributions of meteorology and anthropogenic emissions to the changes of air quality. The result suggested the strict lockdown measures significantly decreased primary components such as Cr (−201 %) and Fe (−154 %) in PM2.5, whereas the higher relative humidity (RH) and NH3 level, and the lower air temperature (T) enhanced the production of secondary aerosol including SO42− (47.2 %), NO3− (38.6 %), and NH4+ (22.7 %). Positive matrix factorization (PMF) result suggested that the contribution ratios of secondary formation (SF), industrial process (IP), biomass burning (BB), coal combustion (CC), and road dust (RD) changed from 35.2 %, 28.9 %, 19.4 %, 11.8 %, and 4.75 % before COVID-19 outbreak to 42.7 %, 20.5 %, 19.45 %, 9.80 %, and 7.56 %, respectively. The rapid increase of the contribution ratio derived from SF to PM2.5 implied the intermittent haze events during COVID-19 period were characterized with secondary aerosol pollution, which was mainly contributed by the unfavorable meteorological conditions and high NH3 level.
Opinion: Papers that shaped Tropospheric Chemistry
Authors: Monks Paul S. , Ravishankara A. R. , von Schneidemesser Erika , Sommariva Roberto
Published: January 2021

Abstract. Which published papers have transformed our understanding of the chemical processes in the troposphere, and shaped the field of atmospheric chemistry? By way of expert solicitation and interactive peer-review, this paper explores the influence of the ideas in peer-reviewed articles based on the input from our community of atmospheric scientists. We explore how these papers have shaped the development of the field of atmospheric chemistry, and identify the major landmarks in the field of atmospheric chemistry through the lens of those papers' impact on science, legislation and environmental events. We also explore the ways in which one can identify the papers that have most impacted the field and discuss the advantages and disadvantages of the various approaches.
Factors controlling Carex brevicuspis leaf litter decomposition and its contribution to surface soil organic carbon pool at different water levels
Authors: Zhu Lianlian , Deng Zhengmiao , Xie Yonghong , Li Xu , Li Feng , Chen Xinsheng , Zou Yeai , Zhang Chengyi , Wang Wei
Published: January 2021

Abstract. Litter decomposition plays a vital role in wetland carbon cycling.
However, the contribution of aboveground litter decomposition to the wetland
soil organic carbon (SOC) pool has not yet been quantified. Here, we
conducted a Carex brevicuspis leaf litter input experiment to clarify the intrinsic factors
controlling litter decomposition and quantify its contribution to the SOC
pool at different water levels. The Carex genus is ubiquitous in global
freshwater wetlands. We sampled this plant leaf litter at −25, 0, and +25 cm relative to the soil surface over 280 d and analysed leaf litter
decomposition and its contribution to the SOC pool. The percentage litter
dry weight loss and the instantaneous litter dry weight decomposition rate
were the highest at +25 cm water level (61.8 %, 0.01307 d−1),
followed by the 0 cm water level (49.8 %, 0.00908 d−1), and the
lowest at −25 cm water level (32.4 %, 0.00527 d−1). Significant
amounts of litter carbon, nitrogen, and phosphorus were released at all
three water levels. Litter input significantly increased the soil microbial
biomass and fungal density but had nonsignificant impacts on soil bacteria,
actinomycetes, and the fungal∕bacterial concentrations at all three water
levels. Compared with litter removal, litter addition increased the SOC by
16.93 %, 9.44 %, and 2.51 % at the +25, 0, and −25 cm water
levels, respectively. Hence, higher water levels facilitate the release of
organic carbon from leaf litter into the soil via water leaching. In this
way, they increase the soil carbon pool. At lower water levels, soil carbon
is lost due to the slower litter decomposition rate and active microbial
(actinomycete) respiration. Our results revealed that the water level in
natural wetlands influenced litter decomposition mainly by leaching and
microbial activity, by extension, and affected the wetland surface carbon
pool.