bluuebunny/crossref_metadata_2025 huggingface dataset:
The Modification of Boerkaert’s (1999) Model of Self-Regulation to Include Younger Learners
Authors: Taylor Sue
Published: April 2021

This study of self-regulation draws on Boerkaert’s (1999) model but proposes adaptations. In particular, it examines the role of the teacher in the promotion of self-regulation, and the importance of curriculum for creating opportunities for autonomous learning. Since Boerkaert’s model was devised for older learners, adaptations are proposed to reflect its possible meaning for younger learners, particularly through the supportive scaffolding of their learning and development toward self-regulation. The study uses an international sample survey of children’s responses to curricular experiences, as well as making comparisons between different educational systems and environments. The article concludes with suggestions for changes in practice to develop self-regulated learners from the early primary years.
TENSIONAMENTO DA GESTÃO DEMOCRÁTICA E AS MUDANÇAS NAS ELEIÇÕES PARA DIRETOR ESCOLAR NO ESTADO DO PARANÁ
Authors: Basei Andréia Paula
Published: April 2021

Neste artigo objetivamos compreender o debate sobre gestão democrática no ensino público em consonância com a Lei n. 18.590, de 15 de outubro de 2015 e as repercussões ocasionadas pela aprovação na Assembleia Legislativa do Paraná da Lei 20.358 de 26 de outubro de 2020, a qual promove mudanças nas eleições para diretor(a) das escolas da rede pública estadual, permitindo uma maior intervenção do Estado na escolha feita pela comunidade escolar. Recorrendo à análise documental e à análise temática de conteúdo, examinamos os documentos da legislação assim como a repercussão na mídia, o posicionamento de entidades sindicais e de agentes políticos. Constatamos que as mudanças propostas configuram mais um momento de tensionamento e cerceamento do poder da democracia e da gestão democrática no contexto político nacional e estadual que interfere no processo democrático, afronta os direitos sociais e a educação pública. Concluímos que as mudanças, ajustes e revisões na legislação devem ser fruto de debates democráticos que contemplem os direitos de todos os cidadãos, contrariamente às ações alienadoras para controle do Estado.
DIÁLOGOS ENTRE ENSINO E PESQUISA: incentivo à pesquisa como atividade investigativa na educação básica
Authors: Moura Aline de Carvalho , Lima Joyce da Costa
Published: April 2021

A atividade investigativa encontra-se no cerne da discussão deste artigo, temática a qual debruçamos nossos estudos e pesquisas. O diálogo entre ensino e pesquisa é o produto do que propomos como problemática a partir do objeto de pesquisa que trata sobre a pesquisa em educação no Brasil. Partindo da compreensão do professor como agente formador na Educação Básica, entendemos a pesquisa como eixo e apoio para a prática docente. Nesse sentido, o objetivo deste artigo é apresentar a pesquisa como atividade investigativa, possibilitando um ensino preocupado com a criticidade, reflexão do aluno sobre sua realidade e as questões que o permeiam como sujeito. Dispomo-nos discutir acerca do conceito de pesquisa, o papel da mesma na prática docente, bem como sua influência na formação do aluno na Educação Básica. Fomentamos o debate quanto à articulação da pesquisa com o ensino, à importância de uma formação inicial para a pesquisa como atividade investigativa e ao senso crítico-questionador do aluno, a partir de uma metodologia que consiste no trabalho bibliográfico sobre a temática da pesquisa em educação no Brasil e sua aproximação com as questões relacionadas ao ensino. Como resultado, apresentamos a possibilidade de uma perspectiva de ensino preocupada em suscitar e instigar a curiosidade e o questionamento a partir dos conteúdos já trabalhados nos mais diversificados segmentos da Educação Básica, a fim de produzir, de fato, a atividade investigativa no cotidiano escolar.
INVESTIGATION OF THE WATER CONTENT OF CH4-H2 SYSTEM
Authors: Galyas Anna Bella , Kis László , Szunyog István , Tihanyi László
Published: April 2021

Hydrogen, as the clean energy carrier of the future can play a significant role in climate policy efforts in the near future. The study National Energy Strategy 2030 published in January 2020 defines the natural gas network as a seasonal energy storage. Several European countries have investigated whether hydrogen predominantly from renewable sources can be introduced to the natural gas system to reduce GHG emission. One of the important parameters of the natural gas fed into the gas network is the water vapor content, its maximum value of which is regulated by law. In this article, the authors examined whether hydrogen, which differs significantly from the properties of methane, causes a significant change in water saturation. The investigated pressure and temperature ranges cover every state found in the processing and transportation of natural gas. To carry out the calculations the Aspen HYSYS program was used.
BREAST IMAGING
Authors: Editorial Article
Published: April 2021

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MOLECULAR IMAGING
Authors: Editorial Article
Published: April 2021

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INTERVENTIONAL RADIOLOGY
Authors: Editorial Article
Published: April 2021

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ULTRASOUND DIAGNOSTICS
Authors: Editorial Article
Published: April 2021

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NEURORADIOLOGY
Authors: Editorial Article
Published: April 2021

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DIGITAL IMAGING, TELERADIOLOGY
Authors: Editorial Article
Published: April 2021

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MEDICAL INSTRUMENT ENGINEERING AND RADIATION SAFETY
Authors: Editorial Article
Published: April 2021

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Kajian Implementasi TWAMP Untuk Evaluasi Performa Dan Optimalisasi Desain Pada Jaringan LTE
Authors: Wahyuni Sri
Published: April 2021

Kepadatan jaringan LTE (Long Term Evolution) membuat kebutuhan akan jaringan yang selalu dalam kondisi optimal. Banyaknya perangkat yang terhubung ke jaringan selular menjadikan LTE sensitif terhadap latensi, jitter, dan packet loss. Network Performance Metrics (NPMs) sangat dibutuhkan dalam mengukur performa jaringan demi menjaga dan mengingkatkan Quality of Service (QoS) dari jaringan yang ada. Performa itu meliputi ketersediaan jaringan, latensi, jitter, dan packet loss. Two Way Active Measurement Protocol (TWAMP) adalah protokol terbuka dua arah yang biasa digunakan dalam pengukuran ini. Dalam kajian ini lebih mendalami efektifitas metode yang diimplementasikan pada jaringan selular LTE.
PENGARUH RELIGIUSITAS TERHADAP PERILAKU ETIKA BISNIS ISLAM PEDAGANG PASAR TRADISIONAL DI KOTA BANDA ACEH
Authors: Akmal Raihanul , Musa Armiadi , Ibrahim Azharsyah
Published: April 2021

Suatu kegiatan bisnis harus dilakukan dengan etika atau norma-norma yang berlaku di masyarakat bisnis agar para pedagang tidak melanggar aturan yang telah ditetapkan. Namun pada pasar tradisional di kota Banda Aceh masih terdapat penyimpangan dan kecurangan. Ada beberapa hal yang mendorong seseorang berperilaku religius atau tidak religius jika dilihat dari dimensi religiusitas. Penelitian ini bertujuan untuk mengetahui bagaimana pengaruh religiusitas terhadap perilaku etika bisnis Islam pedagang pasar tradisional di Kota Banda Aceh. Religiusitas terdiri dari dimensi keyakian, praktik agama, pengamalan, pengetahuan, dan pengalaman. Penelitian ini merupakan penelitian lapangan dengan pendekatan kuantitatif. Populasi dalam penelitian ini adalah pedagang pasar tradisional di kota Banda Aceh dengan sampel yang diambil sebanyak 102 responden dengan menggunakan teknik purposiv sampling. Penelitian ini menggunakan data primer yang diperoleh dari penyebaran angket/kuesioner. Teknik analisis data dalam penelitian ini menggunakan analisis regresi linier berganda dengan menggunakan bantuan software IMB SPSS Versi 20. Hasil penelitian ini menunjukkan bahwa secara parsial dimensi Keyakinan Agama, dimensi Pengamalan Agama berpengaruh positif dan signifikan terhadap perilaku etika bisnis Islam pedagang pasar tradisional di Kota Banda Aceh. Sedangkan dimensi Praktik Agama, Pengetahuan Agama, dan Pengalaman Agama berpengaruh positif dan tidak signifikan terhadap perilaku etika bisnis Islam pedagang pasar tradisional di Kota Banda Aceh. Secara simultan dimensi keyakinan Agama, dimensi Praktik Agama, dimensi Pengamalan Agama, Pengetahuan Agama, dan Pengalaman Agama berpengaruh positif dan signifikan terhadap perilaku etika bisnis Islam. Berdasarkan uji R Square (R2) pengaruh yang diberikan sebesar 33,1 %, sedangkan sisanya 66,9% dipengaruhi oleh variabel lain di luar model.
FAKTOR-FAKTOR YANG MEMPENGARUHI KEPUTUSAN NASABAH DALAM MEMILIH TABUNGAN HAJI (STUDI KOMPARATIF PADA BANK ACEH DAN BANK SYARIAH MANDIRI DI KABUPATEN ACEH SELATAN)
Authors: Irfani Ahmad , Furqani Hafas , Hasnita Nevi
Published: April 2021

Tabungan Haji merupakan salah satu bentuk produk tabungan yang ditawarkan oleh perbankan, selain bertujuan untuk menghimpun dana dari masyarakat juga dimaksudkan untuk memudahkan masyarakat yang berkeinginan menunaikan ibadah haji, namun belum mempunyai uang yang cukup untuk membayar Biaya Penyelengaraan Ibadah Haji (BPIH). Yakni dengan cara menyisihkan penghasilannya untuk ditabung atau disimpan di bank dalam bentuk rekening Tabungan Haji. Penelitian ini bertujuan untuk mengetahui berapa besar pengaruh Pelayanan, Promosi, Religiusitas dan Lokasi terhadap Keputusan Nasabah dalam menentukan tempat untuk menabung tabungan haji. Penelitian ini menggunakan pendekatan kuantitatif yaitu data yang diukur berdasarkan kuesioner yang dibagikan kepada nasabah tabungan haji pada Bank Aceh dan Bank Syariah Mandiri.Variabel dalam penelitian ini terdiri dari Pelayanan (X1), Promosi (X2), Religiusitas (X3), dan Lokasi (X4). Berdasarkan hasil pembahasan dapat disimpulkan bahwa Pelayanan mempengaruhi Keputusan Nasabah di Bank Aceh sebesar 10,5%. Faktor Promosi mempengaruhi Keputusan Nasabah di Bank Aceh sebesar 13,9%. Faktor Religiusitas mempengaruhi Keputusan Nasabah di Bank Aceh sebesar 12,3%. Faktor Lokasi mempengaruhi Keputusan Nasabah di Bank Aceh sebesar 43%. Disini yang menjadi faktor dengan persentase pengaruh tertinggi adalah faktor lokasi dengan pengaruh sebesar 43%. Sedangkan faktor dengan persentase pengaruh terendah adalah faktor pelayanan dengan pengaruh sebesar 10,5 %. Faktor Pelayanan mempengaruhi Keputusan Nasabah di Bank Syariah Mandiri sebesar 31,2%. Faktor Promosi mempengaruhi Keputusan Nasabah di Bank Syariah Mandiri sebesar 15,4%. Faktor Religiusitas mempengaruhi Keputusan Nasabah di Bank Syariah Mandiri sebesar 36,7%. Faktor Lokasi mempengaruhi Keputusan Nasabah di Bank Syariah Mandiri sebesar 10,6%. Disini yang menjadi faktor dengan persentase pengaruh tertinggi adalah faktor religiusitas dengan pengaruh sebesar 36,7%. Sedangkan faktor dengan persentase pengaruh terendah adalah faktor lokasi dengan pengaruh sebesar 10,6%.
Accounting conservatism or earnings management: A study of the allowance for doubtful accounts
Authors: Bryan Timothy Gordon , McKnight Mark A. , Houmes Robert
Published: April 2021

This paper empirically examines the relationship between conservatism and earnings management in chemical and allied products manufacturers via an analysis of the allowance for doubtful accounts and bad debt expense. Data used in the study included total accounts receivable, the total allowance for uncollectible accounts, total assets, and other firm-level data from the COMPUSTAT database of North American firms for companies with the standardized industry code (SIC) of 28 which represents chemical and allied products manufacturers. Chemical and allied products manufacturers were deemed an ideal target for the study because the industry typically has large balances in accounts receivable and allowance for doubtful accounts. Bad debt expense and write-offs were also used; these were obtained from the firms’ forms 10K Schedule II filed with the Securities and Exchange Commission (SEC) during the study period from 2005-2017. Analysts reports were also used, as obtained from Bloomberg for each firm. Results from subsequent regression analyses indicate that firms utilized excessive conservatism within the allowance for doubtful accounts to manage earnings to achieve earnings goals throughout the study period.
A Scattering Problem for a Local Perturbation of an Open Periodic Waveguide
Authors: Kirsch Andreas
Published: April 2021

In this paper we consider the propagation of waves in an open waveguide
in R^2 where the index of refraction is a local perturbation
of a function which is periodic along the axis of the waveguide and
equal to one outside a strip of finite width. Motivated by the limiting
absorption principle (proven in an ealier paper by the author for the
case of an open waveguide in the half space) we formulate a radiation
condition which allows the existence of propagating modes and prove
uniqueness, existence, and stability of a solution. In the last part we
investigate the decay properties of the radiating part in the direction
of periodicity and orthogonal to it.
APPENDICEAL DISEASE IN HEMATOPOIETIC CELL TRANSPLANTATION
Authors: Wright Zachary , Essien Francis , Renshaw John , Wiggins Michael , Brown Alexander , Osswald Michael
Published: April 2021

Appendiceal diseases are relatively rare reported complications during
hematopoietic stem cell transplantation with no guidance on management.
Pre- and post-transplant patients should receive a trial of medical
therapy with appendectomy after recovery but prior to transplant in the
former and plan for appendectomy after completion of immunosuppression
in the latter.
Two novel finite time convergent recurrent neural networks for tackling complex-valued systems of linear equation
Authors: Ding Lei , Xiao Lin , Zhou Kaiqing , Lan Yonghong , Zhang Yongsheng
Published: April 2021

Compared to the linear activation function, a suitable nonlinear activation
function can accelerate the convergence speed. Based on this finding, we
propose two modified Zhang neural network (ZNN) models using different
nonlinear activation functions to tackle the complex-valued systems of linear
equation (CVSLE) problems in this paper. To fulfill this goal, we first
propose a novel neural network called NRNN-SBP model by introducing the
sign-bi-power activation function. Then, we propose another novel neural
network called NRNN-IRN model by introducing the tunable activation function.
Finally, simulative results demonstrate that the convergence speed of
NRNN-SBP and the NRNN-IRN is faster than that of the FTRNN model. On the
other hand, these results also reveal that different nonlinear activation
function will have a different effect on the convergence rate for different
CVSLE problems.
An approach for generating square Hmong characters using intelligent derivation mechanism
Authors: Mo Liping , Zhou Kaiqing , Chen Changfeng , Jiang Wei
Published: April 2021

In order to reduce the storage capacity of fonts and improve the display
quality of characters, this study proposes an approach to generate square
Hmong characters using intelligent derivation mechanism. In the proposed
approach, the process of generating square Hmong characters is transformed
into the process of solving the bounding box of components using binary
tree. Thus, various square Hmong characters can be generated by repeatedly
performing topological transformation of limited components. A corresponding
intelligent derivation model is developed to get square Hmong characters
based on the glyph data of objective components obtained by intelligent
derivation. Meanwhile, deterministic finite automata is also used to
represent the square of square Hmong characters. Testing results of the
editing software developed based on this model demonstrate that the square
Hmong characters generated by the proposed intelligent derivation mechanism
can meet the needs of practical applications.
Modification of gesture-determined-dynamic function with consideration of margins for motion planning of humanoid robots
Authors: Zhang Zhijun , Kong Lingdong , Niua Yaru , Liang Ziang
Published: April 2021

The gesture-determined-dynamic function (GDDF) offers an effective way to
handle the control problems of humanoid robots. Specifically, GDDF is
utilized to constrain the movements of dual arms of humanoid robots and
steer specific gestures to conduct demanding tasks under certain conditions.
However, there is still a deficiency in this scheme. Through experiments, we
found that the joints of the dual arms, which can be regarded as the
redundant manipulators, could exceed their limits slightly at the joint
angle level. The performance straightly depends on the parameters designed
beforehand for the GDDF, which causes a lack of adaptability to the practical
applications of this method. In this paper, a modified scheme of GDDF with
consideration of margins (MGDDF) is proposed. This MGDDF scheme is based on
quadratic programming (QP) framework, which is widely applied to solving the
redundancy resolution problems of robot arms. Moreover, three margins are
introduced in the proposed MGDDF scheme to avoid joint limits. With
consideration of these margins, the joints of manipulators of the humanoid
robots will not exceed their limits, and the potential damages which might
be caused by exceeding limits will be completely avoided. Computer
simulations conducted on MATLfurther verify the feasibility and
superiority of the proposed MGDDF scheme.
Four discrete-time ZD algorithms for dynamic linear matrix-vector inequality solving
Authors: Xu Feng , Li Zexin , Guo Dongsheng
Published: April 2021

Recently, a typical neural dynamics called Zhang dynamics (ZD) has been
developed for online solution of dynamic linear matrix-vector inequality.
This paper show a summary result by presenting the discrete-time forms of
such a ZD for dynamic linear matrix-vector inequality solving. Specifically,
by exploiting four different kinds of Taylor-type difference rules, the
resultant discrete-time ZD (DTZD) algorithms, which are called respectively
the DTZD-I, DTZD-II, DTZD-III, and DTZD-IV algorithms, are established.
These algorithms can achieve excellent computational performance in solving
dynamic linear matrix-vector inequality. The theoretical and numerical
results are presented to further substantiate the efficacy of the presented
four DTZD algorithms.
Beetle swarm optimization algorithm: Theory and application
Authors: Wang Tiantian , Yang Long , Liu Qiang
Published: April 2021

In this paper, a new meta-heuristic algorithm, called beetle swarm
optimization (BSO) algorithm, is proposed by enhancing the performance of
swarm optimization through beetle foraging principles. The performance of 23
benchmark functions is tested and compared with widely used algorithms,
including particle swarm optimization (PSO) algorithm, genetic algorithm
(GA) and grasshopper optimization algorithm (GOA). Numerical experiments
show that the BSO algorithm outperforms its counterparts. Besides, to
demonstrate the practical impact of the proposed algorithm, two classic
engineering design problems, namely, pressure vessel design problem and
himmelblau?s optimization problem, are also considered and the proposed BSO
algorithm is shown to be competitive in those applications.
The improved noise reduction method for the vibration signal based on variational mode decomposition
Authors: Liu Zhiting , Wang Yuhua , Zheng Wenwei , Zhou Yuexia
Published: April 2021

The variational model decomposition (VMD) has a problem that is dificult to
determine the number of intrinsic mode functions (IMF).We use the leaked
energy to determine the number of IMFs. And we use the energy concentration
rate of the IMF?s autocorrelation function and the correlation coefficient
between the IMFs and the original signal, define Q as the ratio of the
energy concentration and the correlation coefficient, and use Q to determine
the noise IMFs in the IMFs. Then, we filter the noise IMFs and use the
remaining IMFs to reconstruct signal to achieve noise reduction. Finally, we
use the signal-tonoise ratio (SNR) to compare the noise reduction method
proposed in this paper and the Empirical Mode Decomposition (EMD) noise
reduction method.
Toward deep neural networks: Mirror extreme learning machines for pattern classification
Authors: Liao Bolin , Ma Chuan , Liao Meiling , Li Shuai , Huang Zhiguan
Published: April 2021

In this paper, a novel type of feed-forward neural network with a simple
structure is proposed and investigated for pattern classification. Because
the novel type of forward neural network?s parameter setting is mirrored
with those of the Extreme Learning Machine (ELM), it is termed the mirror
extreme learning machine (MELM). For the MELM, the input weights are
determined by the pseudoinverse method analytically, while the output
weights are generated randomly, which are completely different from the
conventional ELM. Besides, a growing method is adopted to obtain the optimal
hidden-layer structure. Finally, to evaluate the performance of the proposed
MELM, abundant comparative experiments based on different real-world
classification datasets are performed. Experimental results validate the
high classification accuracy and good generalization performance of the
proposed neural network with a simple structure in pattern classification.
Emerging variants of novel coronavirus - myth and reality
Authors: Jovanovic Tanja , Jankovic Marko , Knezevic Aleksandra
Published: April 2021

The new coronavirus has crossed the species barrier leading to the pandemic of COVID-19. The lengthy circulation of the virus within the human population has enabled the development of many new viral variants, some of which are conducive to further pathogen spread. Notable variants are those that contain mutations within the S gene, particularly within the region that codes for the receptor-binding domain (RBD) that links to the hACE-2 receptor. These mutations are responsible for increased viral transmission and influence disease severity, reliability of clinical tests, as well as vaccine efficacy. At present, the variant first identified in the United Kingdom poses the greatest threat in Europe.
REVIEW OF SCIENTIFIC LITERATURE AND NORMATIVE LEGAL DOCUMENTATION FOR ORGANIZATION OF AND PAYMENT FOR DENTAL CARE
Authors:   Ryazan State Medical University, Uspenskaya I.V. ,   Territorial Compulsory Medical Insurance Fund of the Ryazan Region, Yurina S.V. ,   Ryazan State Medical University,   Territorial Compulsory Medical Insurance Fund of the Ryazan Region, Manukhina E.V. ,   Ryazan State Medical University,   Territorial Compulsory Medical Insurance Fund of the Ryazan Region, Peshkov M.V. ,   Ryazan State Medical University,   Dental Polyclinic №1, Tishkina L.N. ,   Ryazan State Medical University,   Dental Polyclinic №1
Published: April 2021

The article presents a review of scientific domestic and foreign literature and regulatory legal documentation, which allowed to identify problems in the organization of and payment for dental care and to determine possible directions of scientific research on the stated topic. Dependence of availability of specialized dental care on the income level, limited availability and late medical assistance in the rural regions, measures to increase availability through use of the programs of preferential prosthetics are shown. The problems of low coverage of dental services by mandatory medical insurance programs are considered. The levels of provision of population of RF with medical care, methods and difficulties of payments to specialists, of use of conventional units of labor inputs, of correction factors for children and adults, the issues of standardization of primary dental care, ambiguous attitude to the classifier of basic medical dental procedures and technologies that changed the established principle of remuneration in dental practice, are described. The method of payment for primary dental care provided on an outpatient basis for a completed case of treatment in terms of cost of clinic-statistical groups, as well as the per capita principle of payment for outpatient dental care and the difficulties with its implementation within compulsory health insurance in most regions are considered. An important role of automation of the working place for filling the medical documents, of improvement of organizational and medical technologies with use of new materials and equipment, is indicated. Analysis of the scope of medical care demanded by the population within the programs of the state guarantees is given. An emphasis is placed on the priority of the development of the modern dentistry as governmental-private partnership in terms of high adaptation to the market conditions. A complex character of issues of prophylaxis, screening, improvement of organization of and payment for dental care is emphasized, salvation of which will permit to considerably improve the quality of medical care and to guarantee its availability.
PREMATURE OVARIAN FAILURE, ITS CONSEQUENCES, MORTALITY AND IMPACT ON THE CARDIOVASCULAR SYSTEM
Authors:   Ryazan State Medical University, Lopukhov S.V. , Filippov E.V. ,   Ryazan State Medical University
Published: April 2021

This review focuses on the topic of premature ovarian failure (POF) as highly relevant in modern medicine (up to 2% of women in the population suffer from this disease). However, patients with premature ovarian failure not only are still not receiving any treatment, but even making this diagnosis is very difficult. Even after a correct diagnosis is made, these patients are not followed up, despite the fact they have already developed a hormonal imbalance. These women develop two groups of complications: short-term complications associated with a rapid estrogen deficiency in the body, and much more dangerous long-term complications affecting multiple organs and even systems. But in the meanwhile, women with premature ovarian failure are under increased risk of death from all causes, in particular from coronary heart disease (CHD), respiratory diseases, genitourinary diseases and from external causes. And this is despite the fact that cardio-vascular diseases (CVD) are already the leading cause of death among women worldwide. It is women with POF that are at the highest risk of development of cardiovascular diseases, compared to women with normal menopause. These patients, therefore, constitute one of the most important groups to be targeted by screening and prevention strategies primarily for cardiovascular diseases. These strategies should include the use of risk stratification tools to identify women that need lifestyle modifying and pharmacological therapy to prevent development of such diseases in them. This is the only way to maintain a high quality of life in these women over the long term.
ORGANIZATIONAL PROBLEMS OF DISPENSARY OBSERVATION OF INDIVIDUALS ENGAGED IN PHYSICAL CULTURE AND SPORTS, IN THE RYAZAN REGION
Authors:   Ryazan State Medical University, Manakina E.S. , Medvedeva O.V. ,   Ryazan State Medical University, Manakin I.I. ,   Ryazan State Medical University, Kazaeva O.V. ,   Ryazan State Medical University
Published: April 2021

The article is devoted to the organizational aspects of the activity of the Ryazan regional medical and physical culture dispensary for the medical support of the population engaged in physical culture and sports. Specially emphasized is the need to modernize medical support of people engaged in physical culture and sports in the Ryazan region, which is determined by a significant imbalance between the increasing burden on the specialists of the medical and physical culture dispensary and the high rate of commissioning of new sports facilities, and, as a result, a significant increase in the number of people engaged in physical culture and sports. The real costs of working time of specialists were determined, which made it possible to develop and realize a plan of measures aimed at reduction of the time of direct examination by a doctor, the time spent by athletes at the examination stage and, accordingly, increasing their number per unit time. Conclusion. The reasonability of optimization of the structure of the medical and physical culture dispensary of the Ryazan region, development of methods for planning its activities, formation of a unified concept of sports and wellness medicine within the framework of the preventive direction with the creation of a branch development program is identified, which will improve both the quality of medical care provided at the outpatient stage, and will result in reduction of morbidity, probability of sudden death, and of cases of premature retirement from sports.
ANALYSIS OF PUBLIC AWARENESS OF POSTMORTEM DONATION AND CORNEAL TRANSPLANTATION
Authors:   Pavlov First Saint-Petersburg State Medical University, Kochorova L.V. , Klyukovkin K.S. ,   Pavlov First Saint-Petersburg State Medical University, Konstantinova P.I. ,   Pavlov First Saint-Petersburg State Medical University, Mosunov V.S. ,   Pavlov First Saint-Petersburg State Medical University
Published: April 2021

Aim. The study of public opinion, analysis of population’s attitude towards a number of issues concerning both transplantation in general and corneal transplantation in particular for development of the optimal tactics of approach to still unresolved issues in this area. Materials and Methods. Specially designed questionnaire has been used for the survey, consisting of 14 questions, that allows to evaluate opinion of the population on a number of issues related to transplantation, postmortem donation, monetary compensations, etc. The study population was 384 people. Results. Most respondents were aware of keratoplasty. Approximately every seventh respondent (15.4%) of the survey had relatives or close acquaintances with a corneal pathology. Most of the respondents have a positive attitude both to the living and postmortem donation. At the same time, almost all the respondents know about the existence of waiting lists for organ transplantations and also support the opinion about the need for informational popularization of postmortem donation. As to the issue of commercialization of donation, no unified point of view was reached, the opinions differ practically equally. The prevailing number of respondents consider the existence of informed consent to be obligatory, but a part of respondents think that in some cases the surgery can be made without it. Conclusion. Nowadays, despite a significant progress in the field of transplantology, there still remains a number of issues requiring detailed and comprehensive examination. They are related to the legislative regulation, informational popularization, monetary compensation, as well as the waiting lists for the transplantation.
LABORATORY AND CLINICAL MARKERS OF INTOLERANCE TO CASEIN IN CHILDREN WITH AUTISM
Authors:   Burdenko Voronezh State Medical University, Bavykina I.A.
Published: April 2021

Background. The etiology and pathogenesis of autism spectrum disorders (ASD) are still not fully understood. Due to many theories of the disease development, a large number of alternative treatment methods appear, including use of casein-free diet. Aim. To determine the frequency of occurrence of laboratory and clinical markers of casein intolerance in children with ASD. Materials and Methods. 69 children with autism spectrum disorders aged from 3 to 15 years living in the Voronezh region were diagnosed for the level of antibodies to casein (IgG) and β-casomorphin-7 in blood. Parents of children were surveyed on adherence to use of casein-free diet and the effectiveness of its use. Results. Laboratory diagnostics showed increased level of antibodies to casein (IgG) in 78.2% of the examined children, 4.4% of children, according to a survey of parents, follow a casein-free diet for a long time with clinical effectiveness. Thus, a total of 82.6% of children with autism spectrum disorders have intolerance to casein. The concentration of β-casomorphin-7 in the blood of children with ASD is in the range of 0.76-3.38 pg/ml, with the average value 2.23±0.53. Conclusion. It is necessary to conduct large-scale studies to objectively assess the effectiveness of diet therapy and indications for its use. Children with autism spectrum disorders should be examined for food intolerance and the optimal strategy of complex therapy before starting to use the diet.
POLYMORPHISM OF TOLL-LIKE RECEPTORS-2 IN PATIENTS WITH CHRONIC RHEUMATIC HEART DISEASE
Authors:   Ryazan State Medical University, Petrov V.S. , Nikiforov А.А. ,   Ryazan State Medical University, Smirnova E.A. ,   Ryazan State Medical University
Published: April 2021

Aim. To assess the contribution of TLR2 gene polymorphism to echocardiography and spirometry parameters in patients with chronic rheumatic heart disease (CRHD). Materials and Methods. A total of 128 patients with CRHD were examined – 15.6% of men and 84.4% of women. Genotyping by polymorphic markers Arg753Arg, Arg753Gln, Gln753Gln was performed by PCR with SNP-EXPRESS electrophoretic scheme (NPF Litekh, Russia) for detection of the result after extraction of DNA from leukocytes of venous blood. Echocardiography with evaluation of linear dimensions, left ventricular hypertrophy and mitral orifice area was performed on Philips Affinity 50 apparatus; respiration was evaluated using Spirolab II spirometer. Results. The distance of the 6-minute walk test in the groups did not differ significantly: (р=0.168): Arg753Arg–314.75±6.88 m, Arg753Gln–389.69±19.92 m, as well as mitral orifice area (p=0.182): Arg753Arg–1.73(1.66;1.80) cm2 and Arg753Gln–1/70(1.61;1.79) cm2. Echocardiography showed no differences in the size of the left ventricle, but in the group of Arg753Gln heterozygotes, dilatation of the left atrium was significantly higher 5.20(5.08;5.32) cm (Arg753Arg-4.98(4.83;5.13) cm) and of the right ventricle 3.10(2.90;3.30) cm (Arg753Arg-2.66 (2.59;2.72) cm) and less pronounced values of the left ventricular hypertrophy: interventricular septum thickness 1.018(0.92;1.12) cm (Arg753Arg-1.02(0.98;1.05) cm) and of the right atrium 4.40(4.10;4.70) cm (Arg753Arg-4.54(4.33;4.74) cm). In spirometry, values of both obstructive and restrictive parameters were significantly lower in the Arg753Arg homozygous group: forced lung capacity 71.04(66.15;72.94)% (Arg753Gln-84.16(79.68;88,65)%); forced expiratory volume in 1 sec 79,05(76,87;81,23)% (Arg753Gln-88,18(84,40;91.96)%); reserve inspiratory volume 84.88(81.60;88.17)% (Arg753Gln-96.45(86.73;106.18)%); reserve expiratory volume 21.29 (18.08;24.51)% (Arg753Gln-25.93(13.93;37.93)%). Conclusion. In patients with RHD, the contribution of single TLR2 nucleotide replacements to the parameters of echocardiography and spirometry is possible, which is manifested in a decrease in external respiration function in Arg753Arg homozygotes and dilatation of the left atrium and right ventricle in Arg753Gln heterozygotes.
NONUNIFORM COURSE OF ACUTE PERIOD OF HEMORRHAGIC STROKE: ANALYSIS USING METHODS OF MULTIVARIATE STATISTICS
Authors:   Ryazan State Medical University, Kurepina I.S. , Zorin R.A. ,   Ryazan State Medical University, Zhadnov V.A. ,   Ryazan State Medical University, Sorokin O.A. ,   Regional Clinical Hospital, Leonov G.A. ,   Ryazan State Medical University
Published: April 2021

Background. Hemorrhagic stroke is an important medical and social problem both in the world and in the Russian Federation due to high parameters of morbidity, mortality and disability. Aim. To compare expert assessments and formalized multivariate statistical procedures in analysis of clinical inhomogeneity of patients with intracranial hematoma of supratentorial location. Materials and Methods. 75 Patients who took treatment in the neurovascular department of Ryazan Regional Clinical Hospital with the diagnosis of hemorrhagic stroke, were examined. Of them, there were 40 men and 35 women with the mean age 68.1 years. Results. Primarily, on the basis of expert assessments, the patients were divided to 2 groups: with unfavorable course and with relatively favorable course – satisfactory condition, regress of symptoms, recovery of the level of consciousness. In the first stage, in result of the primary expert assessment, the patients were divided to subgroups with favorable and unfavorable course. After that, significant for selection of groups variables were used in selection of clusters: method of hierarchial tree for determination of the number of groups; k-means method for identification of their elements. Discrimination analysis was used for selection of variables in NIHSS and GCS, and also for assessment of canonical correlations. After that, cluster analysis of NIHSS and GCS dynamics was conducted on the 1st, 3rd, 21st day for selection of groups in high-dimensional space of signs with exclusion of subjective expert assessments. Three main groups of patients were selected. In the second stage, in accordance with the number of groups, patients belonging to the corresponding clusters were identified using the k-means method. Cluster 1 included patients with a poor prognosis, clusters 2 and 3 suggested a more favorable course of the acute period with worse parameters in cluster 2. Conclusions. Use of discriminant functions confirms the role of severity of depression of consciousness and of the volume of hematoma in the unfavorable course.
Specificity of the visual perception and the thinking process impairments in their relationship with the functional state of the magno- and parvocellular neuronal systems in schizophrenia
Authors:   I.P. Pavlov First Saint Petersburg State Medical University, Tregubenko I.A. , Mukhitova Yu.V. ,   I.P. Pavlov First Saint Petersburg State Medical University, Shoshina I.I. ,   I.P. Pavlov Institute of Physiology Russian Academy of Science, Isaeva E.R. ,   I.P. Pavlov First Saint Petersburg State Medical University
Published: April 2021

The article examines the relationship between cognitive processes of perception and thinking in schizophrenia. An analysis of the functional state of the magnocellular and parvocellular visual systems, the specificity of their interaction was carried out. New data were obtained on the relationship between the mechanisms of global and local analysis of visual information and cognitive impairments in schizophrenia. The contribution of magnocellular and parvocellular systems (mechanisms of global and local analysis) in the implementation of the thinking processes has been discovered. It has been established that the activity of the magnocellular system is associated with the processes of abstraction and generalization. However, hyperactivation of the magnocellular system leads to a violation of the selectivity and goal setting in the thinking process. A decrease in the activity of the parvocellular system in patients with schizophrenia leads to distortions of the generalization process, an increase in the number of “latent” signs in the thinking process. The study obtained results that allow us to state that early sensory deficits are closely interrelated with the level and nature of the functioning of more highly organized cognitive processes. Sensory deficits identified in schizophrenia lead to higher-level cognitive deficits and are a key link in the structure of neurocognitive deficits in schizophrenia.
Features of adherence to treatment and type of attitude to disease in patients of therapeutic and surgical profile
Authors:   Ryazan State Medical University, Razzhivina M.I. , Ulanova N.N. ,   Ryazan State Medical University
Published: April 2021

The aim of this study is to study the characteristics of treatment adherence and the types of attitude to the disease of patients with various diseases. Special attention is paid to the study of these characteristics in patients with therapeutic and surgical profiles. The article describes the relevance of scientific work, analyzes recent studies and identifies general patterns in the structure of treatment adherence and types of attitude to the disease in patients with various types of medical intervention. The paper presents a scheme of experimental research of the types of reactions to the disease and components of treatment adherence, describes the results of the study of the features of treatment adherence and the type of attitude to the disease of patients with therapeutic and surgical profiles The use of the obtained results will allow us to identify the main targets of influence on patients ' adherence to treatment in order to increase it, to ensure the fastest and most effective adaptation of patients to the conditions of the treatment process. It is also important to have the ability to increase the effectiveness of the treatment itself by reducing stress reactions. In addition, the use of data obtained during the study can be useful for doctors and medical personnel working with such patients. This will allow you to adjust and optimize the process of treatment and recovery of patients, taking into account the characteristics of the response to the disease and, as a result, the implementation or non-implementation of individual recommendations and prescriptions of the attending physician.
AS PRÁTICAS DO ENSINO REMOTO EMERGENCIAL DE EDUCAÇÃO FÍSICA EM ESCOLAS PÚBLICAS DURANTE A PANDEMIA DE COVID-19: REINVENÇÃO E DESIGUALDADE
Authors: Godoi Marcos , Beraldo Kawashima Larissa , Almeida Gomes Luciane de , Caneva Christiane
Published: April 2021

Num período de rápida transformação e de alta incerteza quanto ao futuro, esta pesquisa teve como objetivo identificar as práticas do ensino remoto emergencial (ERE) na educação física durante o isolamento social devido à COVID-19, os desafios e as aprendizagens dos professores e suas expectativas de integração das tecnologias digitais de informação e comunicação (TDIC) no ensino futuro. Este estudo exploratório foi realizado com 33 professores de educação física de escolas públicas de Cuiabá-MT, que responderam um formulário online. A maioria dos professores usam o WhatsApp para encaminhar as tarefas, gravam vídeos e áudios, usam vídeos e textos da Internet. Eles também expressaram os desafios e aprendizagens profissionais relacionadas ao ERE e pretendem integrar mais as TDICs no ensino futuramente. A pandemia de COVID-19 forçou uma reinvenção ou adaptação no processo de ensino-aprendizagem da educação física, mediado pelas tecnologias digitais. Porém, as desigualdades sociais refletem fortemente no acesso à essas tecnologias.
Climate variability and adaptation among small holder banana farmers in mountain regions of Kenya
Authors: Karienye David K. , Nduru Gilbert M. , Kamiri Hellen W.
Published: April 2021

Banana production is the mainstay industry for majority of small holder farmers living in the mountain regions of Kenya. These regions are affected by climate-related impacts at all levels of the value chain. This paper therefore discusses climate trends, related impacts, and adaptations in banana value chain in Mt. Kenya region for the period between 1980 and 2017. The study locations were purposively selected from Mt. Kenya region to include both Imenti South and Mukurweini sub-counties. A sample of 381 respondents was selected using simple random sampling. Triangulation research design was used to guide the study by integrating both qualitative and quantitative methods in data collection and analysis. Historical document analysis was used to examine climatic data (temperature and rainfall) from the Kenya Meteorological Department, Nairobi. Results showed that rainfall and temperature have changed during the study period. Temperature trends in Mukurweini showed R2 = 0.3314 while in Imenti South R2 =0.3441 with an overall annual increase in temperature in Mukurweini by 0.02°C while in Imenti South we registered an increase by 0.016°C for the study period. Mukurweini sub-county rainfall trend line had R2 =-0.1064 while Imenti South sub-county had R2 =-0.1014. Adverse effects of climate variability on banana value chain included low yields in both Mukurweini (79.2%) and Imenti South (60.2%) sub-counties. Farmers in the study area preferred irrigation (57.2%) followed by crop diversification (13.9%) as adaptive strategies to climate variability.
Explaining The Effectiveness Of Forest And Water Management And Its Spatial Distribution In The Metropolitan District Of Quito
Authors: Cabrera-Barona Pablo , Cisneros Paúl
Published: April 2021

The effective implementation of Sustainable Development Goals (SDGs) related to forests (SDG15) and water resources (SDG6) have significant implications for achieving quality of life for people in urban and rural areas. We carried out a study in the rural parishes of the Metropolitan District of Quito (MDQ), Ecuador. The objective of the study was to assess how biophysical factors, institutional capacity and institutional complexity influence the perceived effectiveness of forest and water management. Ordinal logistic regressions were applied and spatial lag regressions were also calculated to assess the possible spatial correlation of the dependent variables. Additionally, spatial autocorrelation analyses (Gi* and Anselin Local Moran´s I) were applied to assess the perceived effectiveness. The regressions results show that the number of stakeholders involved in the management of each resource, used as a proxy for institutional complexity, was a significant variable (p-value = 0.003 for forest resource management and p-value = 0.027 for water resource management) when explaining perceived effectiveness. The spatial autocorrelation results show spatial hotspots (90% and 99% confidence) and a cluster (95 % confidence) of forest management effectiveness as well as some spatial outliers (95% confidence) of water and forest management effectiveness. These findings were put in context to assess the current institutional arrangements used by local actors to implement SDGs 6 and 15. The results obtained may be useful for improving local public policies that seek integrated implementation for SDGs 6 and 15, while the applied methods can be transferred to the study of other SDGs.
Challenges Of Forest Governance In Addressing Redd+: Status, Effects And Prospects. The Case Of Bale Eco-Region, Oromia Regional State, Ethiopia
Authors: Birhan Endalkachew , Assefa Engdawork , Petrova Maria A.
Published: April 2021

Reduction of emissions from deforestation and forest degradation (REDD+) is an internationally accepted mechanism for encouraging developing countries to contribute to climate change mitigation by reducing greenhouse gas emissions (GHGs) by preventing forest loss and degradation; and by increasing removal of GHGs from the earth’s atmosphere through the conservation, management and expansion of forests. This mechanism, however, has failed to bring the desired results in the Bale Eco-Region. Thus, the purpose of this study is to identify the main challenges of forest governance in addressing the implementation of REDD+ projects. Mixed research approach was employed. Relevant qualitative data were gathered through key informant interviews and focus group discussions. Quantitative data were collected through questionnaires. This study revealed that the community produced a total of 5.5 million metric tons of carbon dioxide equivalent in three years (between 2012 and 2015) as a contribution to the global environment. But, they were not received any economic incentives from the REDD+. Generally, while implementing the REDD+ project, forest governance of the Bale Eco-Region has faced different challenges, such as weak institutional arrangements, continuation of deforestation, low enforcement capacity, low economic benefit of the community, lack of strong coordination with media and research institutes, conflict of interest among sectors over forest land, and lack of adequate budget and logistics to undertake proper monitoring and evaluation. All these challenges have in one way or another contributed to the failure of the REDD+ project in the Bale Eco-Region.