bluuebunny/crossref_metadata_2025 huggingface dataset:
Construction of controllability function as time of motion
Authors: Korobov V. I. , Andriienko T. V.
Published: October 2023

This article is devoted to the controllability function method in admissible synthesis problems for linear canonical systems. The work considers methods of constructing such control so that the controllability function is time of motion of an arbitrary point to the origin. A canonical controlled system of linear equations $\dot{x}_i=x_{i+1}, i=\overline{1,n-1}, \dot{x}_n=u$ with control constraints $|u| \le d$ is considered. The controllability function $\Theta$ can be found as the only positive solution of the implicit equation $2a_0\Theta=(D(\Theta)FD(\Theta)x,x)$, where $D(\Theta)= diag(\Theta^ {-\frac{-2n-2i+1}{2}})_{i=1}^n$. Matrix $F=\{f_{ij}\}_{i,j=1}^n$ is positive definite and $a_0>0$ is chosen so that the control constraints are satisfied. The controllability function is motion time if $\dot{\Theta}= -1$. From this condition, an equation is obtained, the solution of which is considered in this work.
Unlike previous works on this topic, no additional restrictions are imposed on the appearance of matrix $F$. The task of this article is to find the parameters set of the matrix $F$ and the column vector $a$, which satisfy the obtained equation and for which the controllability function is the time of movement from the point $x$ to the origin. In this way, we get a family of controls depending on this parameters such that the trajectory of system steers the origin in finite time. In general case, difficulties may arise when finding the solution of Cauchy problem of the corresponding system. Canonical system can be reduced to Euler's equation, for which a characteristic equation can be found, and therefore a trajectory in an explicit form.
Two-dimensional, three-dimensional and four-dimensional canonical systems are considered. In each case, the matrix equation is solved and sets of parameters for which the controllability functions value will be the time of movement of an arbitrary point to the origin are found. Conditions on parameters are obtained from positive definiteness of the matrix $F$. Some parameters and an arbitrary initial point are chosen and the solution of Cauchy problem in analytical form is found.
Expression of cytokeratin and vimentin in villi of the chorion with anteintranatal fetal death on the background of complicated pregnancy
Authors: Zats Olha , Sherstiuk Sergey , Sydorenko Ruslan , Sherstiuk Liudmila , Panov Stanislav
Published: October 2023

Abstract. Approximately 3–10 % of all pregnancies are complicated by premature rupture of membranes (PRM). Pregnancy in the presence of preeclampsia, gestational iron deficiency anemia, and acute chorioamnionitis increases the risk of PRM development. These complications of pregnancy are etiologically related to the factors causing PRM, the most important of which are oxidative stress with the subsequent development of sterile inflammation, droplet bleeding with the formation of a posterior placental hematoma, and inflammation of the placenta and fetal membranes. Aim. To determine the expression of cytokeratin and vimentin in chorionic villi with ante-intranatal death of fetuses against the background of complicated pregnancy. Materials and methods. The first studied group included 8 cases of PEN; in the second group – 8 PED observations; in the third group – 8 cases of AN; on the fourth – 8 cases of AD; in the fifth – 10 observations of KHAN; in the sixth – 16 cases of HAD. For the immunohistochemical (IGH) study, an indirect immunoperoxidase method was used using MCA for cytokeratin pan (AE-1/AE-3) (DAKO, Denmark) – epithelial cells were identified, and MCA for vimentin (V9) (DAKO, Denmark) - mesenchymal cells were identified cells. Results. In clinical groups with preterm pregnancy, the intensity of the reaction was well expressed in the epithelium of normal villi and unevenly expressed or absent in immature and sclerosed villi. The level of expression of cytokeratin by the epithelium of the villi in these groups was significantly higher compared to the CG group. In the groups with full-term pregnancy, the intensity of the IHC reaction was weakly expressed in the epithelium of normal villi and weakly expressed or absent in immature and sclerosed villi. The level of expression of cytokeratin by the epithelium of the villi in these groups was significantly lower compared to both the CG group and premature pregnancy in the case of similar pathology. In clinical groups with full-term pregnancy, the expression level of vimentin in mesenchymal cells of villi increased significantly compared to clinical groups with similar pathology of prematurity and compared to the CG group. Conclusions. In the villi of the chorion, some cells of the syncytial epithelium are transformed into mesenchymal cells with fibroblast-like properties, which can be confirmed by the appearance of vimentin-positive epithelial cells in the syncytiotrophoblast of the villi.
Right thoracoabdominal stab injury penetrating with injury of the internal thoracic artery: case report and lessons in penetrating knife wounds to the chest and abdomen
Authors: Pronin Vasyl , Matvieienko Mariia
Published: October 2023

Abstract. Thoraco-abdominal and transmediastinal injuries are the most challenging injuries faced by surgeons. Aim. To acquaint medical practitioners with a clinical case of diagnosis and treatment of a rare variant of damage to the right internal thoracic artery in a thoraco-abdominal injury. Materials and methods. We present a clinical case of a rare variant of damage to the right internal thoracic artery in a thoraco-abdominal injury, which was complicated by a massive hemothorax, shock and DIC syndrome. Results. The work presents data on the examination and treatment of a patient with a thoraco-abdominal stab wound. A preliminary diagnosis was established: thoraco-abdominal stab wound on the right, hemorrhagic shock. The diagnosis was established based on the patient's complaints, medical history, physical examination data, available at the time of the examination, the results of laboratory and instrumental research methods. Damage to the liver, diaphragm, and internal thoracic artery was established intraoperatively. Clinical interest is not only the rarity of this injury - injury of the internal thoracic artery, but also the therapeutic and diagnostic tactics. Conclusions. We consider this case interesting and instructive. Each wound should be evaluated from the point of view of possible injury of large vessels, in the projection of which location it is localized. The primary surgical treatment of the wound should be carried out under the strict control of an experienced surgeon, especially if the wound is located in the projection of a large vessel. The integrity of the vessel and the absence of bleeding must be confirmed! Intraoperatively, any finding should be taken into account, correlated with possible injuries, and interpreted clinically (provide a logical explanation that satisfies the clinical situation). The decision regarding treatment tactics should be made by the operating surgeon (or a board of surgeons), immediately based on the clinical situation. The surgeon must be reactive and flexible, and have the ability to quickly change the approach according to the findings.
The influence of transient loss of consciousness in children on the health-related quality of life indicators
Authors: Kovalchuk Tetiana
Published: October 2023

Abstract. Any acute, recurrent or inflammatory disease can cause numerous changes in various areas of a child's life from daily duties to emotional and cognitive development, self-esteem, and relationships with other people, as well as can negatively affect his/her contacts with peers, functioning in school or family. The aim of the study was the search for modern scientific achievements in the field of research on the quality of life among children with transient loss of consciousness and their families for a better understanding of the state of the possibilities of using this indicator in the evaluation of the effectiveness of the carried-out treatment and prevention measures. Materials and methods. The following terms were used for the search: «syncope», «epilepsy», «psychogenic transient loss of consciousness», and «quality of life», and «children» in the PubMed Medline and Scopus databases. Only English-language full-text articles published between January 2013 and December 2022 were included in the search. Results. During the past 10 years numerous studies have been published on health-related quality of life in children with epilepsy, and there was only one study among children with vasovagal syncope. Given the typically benign etiology of this disease, children are at high risk of psychological health worsening after experiencing a syncope episode. A diagnosis of epilepsy in early childhood has a profound effect on the child's psychological and physical development. It is important that epilepsy slows down the achievement of children's independence and complicates social relationships and cognitive processes. A number of authors drew attention to the lack of relationship between the quality of life and the frequency of psychogenic non-epileptic seizures in children and proved the key influence of depression and somatoform disorders on the reduction of quality of life. Conclusions. Health-related quality of life study is an important tool for the understanding of disease impact on child’s daily life and family members, which allows you to effectively recognize symptoms for the purpose of their timely correction, and is the final point in assessing the effectiveness of treatment and prevention measures, as well as quality of public health services. The relevance of further quality of life studies in children under the various types of syncope is due to the extremely limited results of observations in this group of patients.
Feasibility and Reliability of a Novel Game-Based Test of Neurological Function in Youth: The Equilibrium Test Battery
Authors: Shepherd Heather A , van Rassel Cody R , Black Amanda M , Graham Robert F , Yeates Keith Owen , Emery Carolyn A , Schneider Kathryn J
Published: October 2023

Background

An estimated 11% of Canadian adolescents will sustain a sport-related concussion each year. However, diagnostic tools to detect and monitor concussive outcomes are limited.

Purpose

To evaluate the feasibility and test-retest reliability of the Highmark Interactive Equilibrium (HIEQ) test battery in uninjured adolescents.

Study Design

Observational study with repeated measurements.

Methods

Participants completed the HIEQ test battery, a game-based platform on an iPad application, that assesses balance, cognitive function, and visual function, for up to 15 consecutive school days in a group classroom setting. Feasibility for use of the HIEQ was evaluated by (1) recruitment rates; (2) retention rates; (3) test completion without assistance; and (4) adverse events. Test-retest reliability was examined using Bland Altman 95% limits of agreement and intraclass correlation coefficients comparing the first and second and second and third obtained scores. Reliability across multiple baseline assessments was also analyzed using intraclass correlations for the second to sixth and seventh to eleventh obtained scores.

Results

Fifty-five uninjured high school students (31 females and 24 males, mean age = 16.24 [1.09]) from three high schools participated in the study. Three participants (5%) completed all 15 days of testing, and 73% completed at least 10 of 15 test days. No adverse events were reported. Although the test was feasible, all subtests showed wide limits of agreement from first to second and from second to third testing occasions. Results indicate poor-to-moderate reliability (<0.50 to 0.75) across those intervals, as well as across the second to sixth and seventh to eleventh testing occasions.

Conclusion

The HIEQ is feasible in high school students; however, performance was characterized by wide limits of agreement and poor-to-moderate reliability across test occasions. Future evaluation of the HIEQ in visual and auditory distraction free individual testing settings is warranted.

Level of Evidence

Level 3.
Computer model of the transponder for the analysis of phase distortions of the signal
Authors: Shagov A. V. , Sukhotin V. V. , Zubov T. A.
Published: October 2023

The article discusses issues related to the development of a computer model of an on-board relay complex with linear signal retransmission for the analysis of phase distortion of the signal. It is very important to know the phase distortion (foray) when determining the coordinates of the radio source by the phase method using a virtual antenna array in satellite communication systems. The literature review given in the article showed that it was not possible to conduct these studies on existing computer models. Based on the classical version of the block diagram of the on-board relay complex, a computer model was developed in the MATLAB R 2016b (Simulink) environment. The model includes a receiving device, an input and output multiplexer and power amplifiers. Mathematical models of Saleh and Gorbanni amplifiers implemented on traveling wave lamps and solid-state amplifiers, respectively, were taken as nonlinear amplifiers. Multiplexers are implemented in the form of bandpass filters connected in parallel. The hybrid divider and ferrite circulators were not included in the model. In the model, it is possible to investigate the dependence of the phase distortion of the signal on the characteristics of the structural blocks of the on-board relay complex. The computer model also provides for the possibility of studying the effect of noise on phase distortion.
Features of dynamic load analysis of spacecraft rotational drive mechanisms
Authors: Titova A. S. , Sablin A. S. , Zagainov M. A. , Kuznetsov S. A.
Published: October 2023

An executive precision universal mechatronic module is considered, which allows performing precision rotational motion of the output kinematic link. The universal mechatronic module is designed to create the kinematics of mechatronic guidance systems and positioning of objects of aerospace technology. The key features of the executive precision universal mechatronic module are high positioning accuracy, low weight and overall dimensions. The aim of the work is to create a finite element model and analyze dynamic loads to assess the resistance of the structure to external vibration loads. The first section describes the creation of a finite element model taking into account the radial and axial stiffness of the supporting structural elements. The second section describes performing static analysis to create a preloaded state, and performing dynamic analysis. The influence of sinusoidal and random vibrations is investigated, the natural frequencies of the universal mechatronic module design are determined.
New Characterizations of the Jeribi Essential Spectrum
Authors: Chafika Belabbaci
Published: October 2023

In this paper, we give several characterizations of the Jeribi essential spectrum of a bounded linear operator defined on a Banach space by using the notion of almost weakly compact operators. As a consequence, we prove the stability of the Jeribi essential spectrum under compact perturbations. Furthermore, some characterizations of the Jeribi essential spectra of 3×3 upper triangular block operator matrix are also given.
Convolutional Neural Network for Predicting Failure Type in Concrete Cylinders During Compression Testing
Authors: Palomino Ojeda Jose Manuel , Cayatopa-Calderón Billy Alexis , Quiñones Huatangari Lenin , Piedra Tineo Jose Luís , Milla Pino Manuel Emilio , Rojas Pintado Wilmer
Published: October 2023

Cracks in concrete cause structural damage, and it is important to identify and classify them. The objective of the research was to describe the behavior and predict the type of failure in concrete cylinders using convolutional neural networks. The methodology consisted of creating a database of 2650 images of failure types in concrete cylinders tested in compression at the Laboratory of Testing and Strength of Materials of the National University of Jaen, Cajamarca, Peru. To identify cracks on the concrete surface, the database was divided into training (60%), validation (20%), and testing (20%), and a transfer learning approach was developed using the MobileNet, DenseNet121, ResNet50, and VGG16 algorithms from the Keras library, programmed in Python. To validate the performance of each model, the following indicators were used: recall, precision, and F1 score. The results show that the models studied correctly classified the type of failure in concrete with accuracies of 96, 91, 86, and 90%, with the MobileNet algorithm being the best predictor with 96%. The novelty of the study was the development of deep learning algorithms with different architectures that can be used in structural health assessment as an automated and reliable method compared to traditional ones. In addition, these trained algorithms can be used as source code in drones for structural monitoring. Doi: 10.28991/CEJ-2023-09-09-01 Full Text: PDF
Effect of Class F Fly Ash on Strength Properties of Concrete
Authors: Alaj Anjeza , Krelani Visar , Numao Tatsuya
Published: October 2023

Reducing the amount of CO2 emissions in the environment is one of the priorities of the EPA and other environmental agencies. A way to reduce CO2 emissions is by using fly ash in the concrete industry. Aside from environmental benefits, fly ash has numerous quality advantages; some of the positive effects were recognized earlier; however, in this research, the objective is to replace cement with a different percentage of class F fly ash with a low CaO content to produce sustainable concrete. Laboratory tests were performed to examine the rational percentage of cement replaced by class F fly ash in ordinary concrete C–25/30 and high-performance concrete C–50/60. In total, twelve different mix designs were prepared to examine consistency, setting time, shrinkage, and compressive strength in different periods of curing for more than 600 days. Using recycled material in new buildings still has some obstacles, but the future of construction must be green, so this research indicates that the objective of producing ordinary and high-performance concrete was achieved by replacing 30% of cement with class F fly ash. Doi: 10.28991/CEJ-2023-09-09-011 Full Text: PDF
Enhancing Risk Assessment in Toll Road Operations: A Hybrid Rough Delphi-Rough DEMATEL Approach
Authors: Pratama G. Ardi , Latief Y. , Trigunarsyah Bambang , Riantini L. Sagita , Sihombing Lukas Beladi
Published: October 2023

This study aims to identify significant risks and their relationship to the successful operation of the Trans-Sumatra toll road in Indonesia. The research utilizes the Delphi and DEMATEL methods, along with rough set analysis, to identify and evaluate 28 risks associated with toll road operations in Sumatra. The research identifies 13 dominant risks, including policy changes, government intervention, inflation, financial distress, fluctuation of interest rate, fluctuation of currency, high cost of maintenance, low volume of traffic, competitive routes, overloading vehicles, many infrastructure defects, and natural disasters. In this case, natural disasters, inflation, and vehicles with excessive loads are the most dominant cause factors because those risks have the highest cause value based on the cause-effect diagram. Furthermore, the prominence diagram reveals that income risk, policy changes, and financial distress have notable implications for operational activities. The study presents a MCDM risk assessment approach that incorporates rough set analysis, providing a comprehensive understanding of the critical risk relationship factors for toll road operations. By integrating rough set analysis, this research contributes to the field of toll road operations and risk assessment. The identified risks and their relationships serve as a foundation for developing effective strategies for toll road operational management. Doi: 10.28991/CEJ-2023-09-09-03 Full Text: PDF
Potential Erosion in Mining, Oil Palm Plantations, and Watersheds Reforestation Areas
Authors: Sukri Ahmad Syarif , Saripuddin M. , Nasrul . , Talanipa Romy
Published: October 2023

Erosion forecasting is a complex issue generated by numerous causes, the extent of which varies based on the unique area and conditions. Changes in rainfall, land cover, and watershed function are the primary causes of increased erosion. This study aims to scrutinize the actual and potential erosion in the mining area (MA), oil palm plantations (OPP), and watersheds reforestation (WR) in Asoloe, South Konawe, Indonesia. We utilized qualitative research methods and surveys with the USLE model. MA shares the highest actual erosion with 332.30 tons/ha/year, with an average erosion of 27.69 tons/ha/year from 2011 to 2022. Meanwhile, the potential erosion is 4747.19 tons/ha/year, with an average of 395.60 tons/ha/year. In terms of current conditions, 44.6% of rainfall engenders erosion with more than 0.5 t/ha and 33.9% with more than 1 t/ha. This study successfully demonstrates that for given location and area characteristics, high amounts of rainfall and changes in land function eminently affect soil erosion and that the potential erosion changes that occur in the Asoloe watershed every year are exceptionally influenced by changes in land use and land function. Therefore, some mitigation strategies and policies must be taken to reduce the risk of future erosion. Doi: 10.28991/CEJ-2023-09-09-07 Full Text: PDF
Іони важких металів барію та кадмію – реакції рослин та культур клітин
Authors: Зайцева Ірина , Броннікова Лариса
Published: October 2023

Функціонування та онтогенез рослин здійснюється під генетичним контролем. Повнота реалізації генетичного потенціалу є наслідком взаємодії генотип/середовище і залежить від навколишніх умов. Реакція на різні стреси встановлює різницю між стійкими і нестійкими генотипами. При цьому виділяються реакції цілісної рослини та реакції, що реалізуються на клітинному рівні.

Для визначення вкладу кожного складового у загальній стійкості організму необхідне їхнє паралельне дослідження. У цьому найбільш оптимальним підходом є порівняльний аналіз рослини і клітинної культури, ініційованої з нього.

Для отримання об'єктивної інформації необхідно, по-перше, встановлення стресорів, які надають різнобічний вплив на організм. По-друге, виявлення загальних реакцій адаптацію ним.

Цим умовам відповідають іони важких металів (ІТМ), зокрема катіони барію, Ва2+, і кадмію, Cd2+. Токсична дія даних катіонів схожа з негативною дією осмотичних стресів – засолення та водного дефіциту. Їхній порівняльний аналіз виявив ключову роль механізмів клітинного рівня.

Це надає можливість використання цих катіонів у клітинній селекції – біотехнології, пов'язаної з маніпуляціями культур клітин. Результатом може бути відбір форм із підвищеним рівнем стійкості до абіотичних стресів.
Біорізноманіття дубових лісів у Цуманському лісництві (Ківерцівський національний природний парк «Цуманська пуща», Україна)
Authors: Зінченко Олександр , Кузьмішина Ірина , Труш Тетяна , Сухомлін Катерина , Зінченко Марія , Дяків Світлана
Published: October 2023

За результатами польових досліджень впродовж вегетаційного періоду 2022 р. у діброві Цуманського лісництва Ківерцівського національного природного парку «Цуманська пуща» у Волинській області виявлено 25 видів судинних рослин і представників 32 таксонів безхребетних тварин. Обстеження трьох ділянок у кв. 10, вид. 42 Цуманського лісництва здійснили впродовж вегетаційного періоду з 14.05.2022 до 25.09.2022 р. Деревостан представлений насадженнями Quercus robur L. з домішкою Carpinus betulus L., Pinus sylvestris L. Чагарниковий ярус слабо розвинений, у трав’яному ярусі поширені Anemonoides nemorosa (L.) Holub (син. Anemone nemorosa L.), Maianthemum bifolium (L.) F.W.Schmidt, Oxalis acetosella L. Віддаленість території досліджень від смт Цумань і автошляхів сприяло збереженню рослинного покриву – всі види рослин діброви представляють аборигенну флору з типовими неморальними (15 видів; 60,0 % усіх рослин) і бореальними (10 видів; 40,0 %) видами.

Еудомінантною групою безхребетних тварин впродовж сезону 2022 року були представники різних рядів класу комахи Insecta (41,54 %) від загальної кількості зібраних особин. Домінантними (ІД ≥ 10,00 %) були колемболи Collembola (22,04 %) рядів Poduromorpha і Symphypleona, саркоптиформні кліщі Sarcoptiformes (22,54 %), зокрема панцирні кліщі Oribatida, серед комах до цієї групи належать туруни Carabidae (10,43 %). Субдомінантами (ІД 1 – 9,99 %) у наших зборах були вищі ракоподібні Malacostraca, зокрема, мокриці Oniscidea, багатоніжки Myriapoda, павукоподібні Arachnida, представлені павуками Araneae та косариками Opiliones. Серед комах до цієї групи належать стафіліни Staphylinidae, гнойовики Geortupidae, мурашки Formicidae та двокрилі Diptera. До рецедентів (ІД ≤ 1,00 %) належать люмбрициди Lumbricidae, псевдоскорпіони Pseudoscorpiones. Серед комах у ґрунтові пастки зрідка потрапляли лускатниці Lepismatidae, лісові таргани Blattellidae, попелиці Aphidoidea, цикадки Cicadellidae, справжні клопи Heteroptera, справжні вуховертки Forficulidae, справжні сіноїди Psocidae, вусачі Cerambycidae, мертвоїди Silphidae, хрущики Scarabaeidae, довгоносики Curculionidae, короїди Scolytinae, ковалики Elateridae, златки Buprestidae, блохи Hystrichopsyllidae з роду Palaeopsylla.

Найбільше фауністичне різноманіття (3,43) властиве ділянкам дубового лісу з домішками грабу. Фауни порівнюваних пробних площ подібні, показники індексу схожості змінюються в межах 0,91 – 0,93.
Васкулярна анатомія та морфологія квітки Allium victorialis L. Sp. Pl. (Amaryllidaceae J.St.-Hil.)
Authors: Фіщук Оксана
Published: October 2023

Вивчено морфологічну будову та васкулярну анатомію квітки Allium montanum. Описані нові мікроморфологічні ознаки вертикальної зональності гінецею, васкулярної анатомії квітки та будови септального нектарника, які раніше не використовувались у систематиці родини Amaryllidaceae. Мікроморфологічні препарати 15 квіток Allium montanum були виготовлені, використовуючи стандартні методи просочення рослинного матеріалу парафіном. Описані виготовлені зрізи квітки на стадії бутону завтовшки 15-20 мкм за допомогою ротаційного мікротома. Нами встановилена наявність трьох вертикальних зон у гінецеї Allium montanum: синасцидіатна зона, симплікатна структурна зона, та гемісимплікатна зона. Мікроморфологію та васкулярну анатомію квітки вивчали за допомогою поперечних зрізів квітів. Квітконіжка Allium montanum містить 8 провідних пучків, які вище формують провідний циліндр, від якого на рівні квітколожа відходять сліди листочків оцвітини та сліди тичинок, а ще вище – сліди дорзальних пучків плодолистка. Тичинки відокремлюються від зав’язі. Стовпчик занурений у зав’язь, гінобазичний. У центрі залишається коло з дрібних провідних пучків – корені вентрального комплексу, які вище на рівні появи гнізд реорганізуються у парні провідні пучки – вентральні пучки плодолистка. Насінних зачатків по 2 у кожному гнізді, слід насінного зачатка однопучковий. Дорзальні провідні пучки однопучкові. Вище від гнізд зав’язі вентральні пучки плодолистка закінчуються сліпо. Сліди зовнішніх листочків оцвітини та внутрішніх листочків оцвітини однопучкові. Слід тичинки однопучковий.
Нові отримані ознаки мікроморфології та васкулярної анатомії квітки Allium montanum допоможуть нам у вивченні інших представників роду Allium та дадуть можливість порівняти отримані морфологічні та анатомічні особливості з ознаками, вивченими нами раніше у представників Amaryllidaceae для можливості їх використання у систематиці родини.
Знахідки рідкісних жуків-тінелюбів Меlandryidae Leach, 1815 на верхній межі лісу Полонинського хребта Українських Карпат
Authors: Рошко Володимир , Фельбаба-Клушина Любов
Published: October 2023

Описано місця знахідок двох рідкісних сапроксилобіонтних видів жуків з родини ті нелюбів Меlandryidae  Leach, 1815: флоїтрії Phloiotrya subtilis (Reitter, 1897) та меландрії бородатої Melandrya barbata (Fabricius, 1792), які були відомі з давніх літературних джерел, а для регіону Українських Карпат є першими сучасними знахідками. Для таких екотонних екосистем, як верхня межа лісу, види наводяться вперше.

Знахідки цих тінелюбів були відомі тільки зі східної України ще у 90-х роках минулого століття. Ці види виявили під час комплексних екологічних досліджень у 2018-2019 роках на верхній межі лісу північно-західної частини Полонинського хребта. Тут верхня межа утворена лісовим буково-яворовим фітоценозом природного походження та полонинами з різнотравних злакових фітоценозів та чагарничків з чорничника та брусничника.

Phloiotrya subtilis була знайдена в екотоні одного з гірських масивів Стінка на висоті 944 м н.р.м. Тут екотонна ділянка утворена чагарниковими заростями підростаючих горобини Sorbus aucuparia, клена гостролистого A. pseudoplatanus та верб Salix sp.

Melandrya barbata була відмічена на лісовій ділянці гірського масиву Явірник на висоті 1001 м н.р.м. Ліс тут представлений природним фітоценозом яворової бучини, віком 120-150 років і вище. У підрості трапляється клен гостролистий Acer platanoides і горобина звичайна Sorbus aucuparia. На обох ділянках, де були знайдені рідкісні тінелюби помітна значна кількість мертвої деревини, заселеної різними видами стовбурних грибів.

Знахідки рідкісних тінелюбів підкреслюють цінність таких природних екосистем, як верхня межа лісу, які формують необхідні для існування сапроксилобіонтних організмів оселища.
Retor o barbarzyńcach, barbarzyńcy o retoryce – przybysze z dalekich krajów w utworach Lukiana z Samosat
Authors: Sowa Joanna
Published: October 2023

Lukian, jeden z najwybitniejszych greckich stylistów, satyryk i mówca, pochodził z Samosat nad Eufratem – był więc, według własnego określenia, „Syryjczykiem i barbarzyńcą”. Ta podwójna perspektywa – Greka z wykształcenia, „barbarzyńcy” z pochodzenia – pozwoliła mu w wielu utworach nie tylko wykorzystywać sięgający czasów wojen perskich motyw dychotomii Hellenów i barbarzyńców, ale także podważać zakorzenione stereotypy, bawiąc się nimi i kierując ostrze satyry w obu kierunkach. Celem artykułu jest ukazanie, na wybranych przykładach, sposobu, w jaki Lukian zarówno przełamuje, jak i wykorzystuje związane z pochodzeniem stereotypy, ukazując kontrast pomiędzy grecką paideią a kulturą pojawiąjących się w jego dialogach „barbarzyńców”, a także przedstawiając w zupełnie odmiennym świetle dwie kategorie „barbarzyńców”: Scytów i Syryjczyków.
Precision Marketing Model using Decision Tree on e-Commerce Case Study Orebae.com
Authors: Fadil Indra Sanjaya  , Anna Dina Kalifia
Published: October 2023

The development of the industrial world towards industry 4.0 has resulted in changes in the lifestyle of the wider community in carrying out their activities through digital media, one of which is shopping. This has an impact on the emergence of many business actors in the e-Commerce field, which brings its own challenges to stay alive and face the competition. The demands for innovation in competitive competition are also increasingly diverse with various approaches ranging from technology, social science, management science, and even artificial intelligence. One form of innovation that is widely carried out by e-Commerce today is looking for an ideal and effective form of marketing, where the form of marketing itself is considered less able to accommodate e-Commerce needs. One form of real innovation in finding the ideal and effective marketing is precision marketing. Precision marketing itself is marketing that is carried out by utilizing data where consumers are the center of preference for data collection. In fact, many of the e-commerce companies that were launched were unable to keep up with the competition because they were unable to develop marketing strategies and eventually went bankrupt. Therefore, we need a special way to bridge these problems so that e-Commerce can stay alive, especially for e-Commerce classified as Small and Medium Enterprises (SMEs). This research will focus on developing a precision marketing model in e-Commerce for small businesses, namely orebae.com which can be used as a tool in the development of marketing strategies. This research was carried out using a machine learning approach by adopting a decision tree algorithm. The results of this study showed that the precision marketing model for orebae.com based on customer preferences can be used to increase the number of sales of orebae.com and to reduce marketing costs.
On the influence of the dark substance on electromagnetic radiation in space
Authors: Ryabushko A. P. , Zhur T. A.
Published: October 2023

This paper investigates the influence of the gravitational fields of dark matter and dark energy, the existence of which is currently firmly established, on electromagnetic radiation in space. In the post-Newtonian approximation of the general theory of relativity, a regularity is derived that generalizes the well-known Shapiro time delay (Shapiro effect) to estimate the delay of a light beam during the Mercury location. The generalization consists of the fact that in addition to the gravitational field of the central mass, the influence of the gravitational fields of the visible (observed) medium and dark substance on the processes in space is taken into account. The cases of location of the planet Mercury and the star near the center of our Galaxy in gravitational fields created by a spherically symmetrically distributed medium are considered. Estimates of the delays of location signals are calculated, which can exceed the time delays of signals in a space not filled with a medium by several orders of magnitude. A method for estimating the density of a dark substance is indicated if the experimental estimate of the location signal delay is known. This method is illustrated by the location of Mercury as an example.
New composite materials for protection against gamma radiation
Authors: Tishkevich D. I. , German S. A. , Zhaludkevich А. L. , Vershinina T. N. , Rotkovich A. A. , Bondaruk A. A. , Leonchik S. V. , Urbanovich V. S. , Dashkevich E. S. , Trukhanov A. V.
Published: October 2023

A new composite material of W–Bi2O3 system is proposed as a protection against ionizing radiation. An improved method of hot isostatic pressing for the preparation of composite materials is proposed. The duration of sintering under conditions of high pressure and temperature was 3 minutes. The study of the morphology and chemical composition of W–Bi2O3 composites was carried out using scanning electron microscopy and X-ray energy-dispersive spectroscopy respectively. The density evaluation of the obtained materials was carried out using the Archimedes’ method. The densest samples were obtained at a pressure of 5 GPa and temperatures of 25 and 500 °C, the density of which was 18.10 and 17.85 g/cm3, respectively. It is shown that exposure to high temperatures during sintering adversely affects both the microstructure and density of the samples due to the redox reaction accompanied by the reduction of Bi and the oxidation of W. The results of studying the W–Bi2O3 structure by X-ray diffraction analysis showed that all samples include the main body-centered phase W, and the presence of the WO2 phase is noted only when the sintering temperature is increased to 850 °C, which is confirmed by the appearance of reflections 111 and 22-2. Shielding effectiveness of the W–Bi2O3 composite materials from gamma radiation using the Phy-X/PSD software was evaluated. Co60 with an energy of 0.826–2.506 MeV was used as a source of gamma quanta. The simulation results were compared with the calculations for Pb and Bi. Key parameters such as linear attenuation coefficient, mean free path and half value layer are determined. The calculation results showed that the W–Bi2O3 composite surpasses Pb and Bi in its shielding properties, which makes it promising for use as a radiation shielding material.
Innovative technologies for strengthening of internal surfaces of suspension parts of heavy-loaded machines by laser and high-frequency induction methods
Authors: Devoino O. G. , Vegera I. I. , Zaleski V. G. , Rudy V. V. , Zharsky V. V.
Published: October 2023

In the article innovative methods of surface hardening of internal surfaces of machine parts by laser and highfrequency induction heating are presented. The relevance of applying the methods of laser and induction hardening for the internal surfaces of heavily loaded parts of quarry equipment is proved. The results of modeling and calculation of thermal and electromagnetic fields under the influence of an external electromagnetic field and laser radiation beams are presented. The original design of a complex of equipment for processing the internal surfaces of suspension parts by external electromagnetic field is described. The optimal designs of inductors with magnetic circuits made of various materials are shown. The study of the structure and properties obtained on the internal surfaces of heavily loaded suspension parts of cars, line of the BelAZ company, treated according to the optimal modes of surface induction exposure is given. The developed original technology and equipment of laser surface hardening, which makes it possible to increase the wear resistance of heavily loaded parts, is described. Data on the implementation of research results at JSC “BELAZ” – the Management Company of the Holding “BELAZ-HOLDING” for processing a wide range of heavily loaded suspension parts are given.
PRÁTICAS LÚDICAS E A CONSTRUÇÃO DO CONHECIMENTO DA LINGUAGEM VERBAL E NÃO VERBAL NO ENSINO FUNDAMENTAL
Authors: Freitas Izabel Silva de , Araújo Luzia Pereira de Souza , Lima Franciele Alice dos Santos , Ventura Delzélie Maria
Published: October 2023

O objetivo deste trabalho é o de auxiliar o educador no processo lúdico como instrumento mediador do conhecimento cuja pesquisa observamos que interagir e brincar com os estudantes é fundamental para que elas consigam desenvolver-se. Veremos também que os laços de amizade são importantes e tornam-se mais fortalecidos através das brincadeiras em sala de aula, onde o desenvolvimento de uma relação saudável começa a partir do respeito de uma criança por outra, aprendendo a partilhar dos brinquedos, livros, até mesmo do lanche. O leitor poderá observar que vínculos afetivos, de respeito, amizade, podem e devem ser embasados pelo educador, que consegue através da observação, apaziguar conflitos, discordâncias, sem preferências por essa ou aquela criança. A interação através do lúdico estimula também ao aluno à sua autonomia, fazendo com que ela possa gradativamente sentir-se segura e cada vez mais capaz na realização de variadas tarefas, superando suas habilidades ou dificuldades sociais, ajudando-a na aquisição do conhecimento.
Palavras-chaves: Lúdico. Ensino Fundamental. Metodologia Pedagógica.
COMPETÊNCIA LEITORA E A RELAÇÃO COM A APRENDIZAGEM
Authors: Melo Suzaneth Rodrigues de
Published: October 2023

O presente artigo apresenta-se como parte da Dissertação de mestrado que tem por título: A importância da redação para os alunos do Ensino Médio da escola Estadual Sérgio Mendonça de Aquino de Itacoatiara no Amazonas no ano de 2021. Este estudo tem como objetivo investigar a importância das experiências da primeira infância no desenvolvimento da leitura e escrita, bem como sua influência nas habilidades cognitivas e linguísticas das crianças. Além disso, busca-se compreender o papel da leitura na formação de competências essenciais para o sucesso da formação da criança, bem como no desenvolvimento pessoal e social. Foi desenvolvido um estudo qualitativo, descritivo e bibliográfico. Os resultados deste estudo destacam a significativa influência das experiências da primeira infância no desenvolvimento cerebral das crianças, particularmente nas áreas relacionadas à linguagem e cognição. Ficou evidente que a estimulação adequada, incluindo a interação com o meio ambiente, a leitura, a fala, desempenha um papel fundamental na preparação das crianças para o sucesso na educação formal. Além disso, o estudo enfatiza a importância de um ambiente de aprendizagem estimulante, onde as crianças se sintam emocionalmente seguras e felizes. Essas condições socioafetivas são essenciais para o desenvolvimento da autonomia e independência das crianças, bem como para sua expressão individual no contexto social e cultural em que estão inseridas.
Palavras-chave: Leitura. Competência. Ensino. Aprendizagem.
RESPONSABILIDADE SOCIAL EMPRESARIAL: UMA JORNADA HISTÓRICA DE TRANSFORMAÇÃO
Authors: Alyrio Bianca Cesar
Published: October 2023

Este artigo é resultante da Dissertação de Mestrado que traz o título: Responsabilidade Social: Análise Correspondente ao aspecto legal relacionado à qualidade de vida do trabalhador junto as Organizações – 2019 á 2021. O termo responsabilidade social é frequentemente usado em dois contextos diferentes: para descrever o que a empresa está realmente fazendo e para descrever o que deveria fazer. Ou seja, uma abordagem descritiva e outra normativa. O estudo trouxe por objetivo: explorar e analisar o conceito de responsabilidade social e sua evolução ao longo do tempo. Foi desenvolvido um estudo descritivo exploratório, com abordagem qualitativa. Nas últimas duas décadas, o conceito de responsabilidade social (RS) passou a ser amplamente debatida em diversos campos acadêmicos e empresariais, ganhando crescente aceitação. O tratamento da questão da responsabilidade social e sua aplicação nas políticas empresariais tem sido desigual na América Latina e no Caribe em relação a comparação com o que aconteceu nos Estados Unidos e na Europa. A responsabilidade social pode ser entendida como a obrigação ou compromisso que as empresas assumiram em relação à sociedade em geral. O resultado do estudo apresentado explica que o conceito de sustentabilidade também passou a ganhar destaque, refletindo a crescente preocupação global com questões ambientais. Contudo, a responsabilidade social não deve ser considerada um substituto de regulamentos ou legislação sobre direitos sociais ou normas ambientais, nem permite ignorar o desenvolvimento de novas normas adequadas. Nos países que não possuem tais regulamentações, os esforços devem concentrar-se na formação de leis ou regulamentos apropriados, com o propósito de definir um ambiente uniforme, a partir do qual seja possível desenvolver práticas socialmente responsáveis.
Palavras-chave: Responsabilidade Social. História. Sustentabilidade.
O PROGRAMA BOLSA FAMÍLIA NO NORDESTE BRASILEIRO: UMA REVISÃO SISTEMÁTICA DA LITERATURA DE 2003 A 2018
Authors:   , SOUZA MARIA EDUARDA NUNES DE
Published: October 2023

Dada a relevância que os programas sociais adquirem no início do século XXI e com a influência exercida pelo Programa Bolsa Família - PBF em mais de 14 milhões de famílias beneficiárias em todo o país, este trabalho tem por objetivo analisar as publicações sobre o PBF relacionadas à Região Nordeste na base Scientific Electronic Library Online - SciELO no período de 2003 a 2018. O PBF é uma política federal que visa amenizar a pobreza e a extrema pobreza através de transferências monetárias aos beneficiários, com a finalidade de fomentar também o acesso aos direitos básicos como saúde, educação e assistência social. Por concentrar o maior número de beneficiários, mais de 50%, a Região Nordeste, caracteriza-se como um campo necessário a se mapear. O mapeamento das publicações e análises do conhecimento produzidos nos 16 anos de desenvolvimento do PFB, se faz importante por contribuir com o alinhamento das experiências, resultados e perspectivas sobre o Programa no que tange a Região Nordeste. Utilizamos como metodologia, a Revisão Sistemática da Literatura, para que possamos compreender em quais áreas os estudos se concentram, quais métodos e principalmente quais resultados as pesquisas nos trazem. Este trabalho pôde concluir que o PBF causou impactos maioritariamente positivos nas famílias beneficiárias. Os dados identificados na pesquisa, nos mostram que com a implementação do Programa, houve aumentos da taxa de matrículas e na frequência escolar, redução dos índices de evasão escolar, e ainda efeitos não esperados como a influências nos processos eleitorais presidenciais, na fecundidade das beneficiárias e dentre outros aspectos que serão tratados ao longo do texto. Ao mapear esses pontos poderemos também mensurar onde e o que se pode potencializar no Programa Bolsa Família, assim como quais áreas os estudos devem ser potencializados. Os principais resultados desta pesquisa expressam que o Programa Bolsa Família não inibiu a procura por trabalho, seja ele formal ou informal, há de se ver que em sua maioria os beneficiários trabalham e que apenas os repassem advindos das transferências monetárias federais, seriam incapazes de suprir as necessidades das famílias. No que se refere ao aumento do número de filhos, as pesquisas nos mostram que o PBF não fomenta a fecundidade, já que as famílias adentram ao Programa por terem filhos e não o contrário. Ademais, o Programa também concentra limitações no que se refere a gestão da política pública, já que a maior parte dos processos são feitos a nível municipal, há limitações no que se refere à disponibilidade de recursos e também de formações para os gestores da política, o que acaba por impactar na decadência de alguns instrumentos de monitoramento.
La conflictividad del Acuerdo por la Paz y la Nueva Constitución en el territorio del discurso
Authors: Araya Seguel Claudio , Farías Farías Miguel
Published: October 2023

Este trabajo reporta los hallazgos del análisis valorativo de textos de ciberprensa referidos al denominado Acuerdo por la Paz y la Nueva Constitución (APNC), en un corpus de noticias de los medios El Mostrador, Emol y La Tercera. El objetivo es conocer los posicionamientos ideológicos de estos medios de ciberprensa desde los patrones valorativos identificados en el análisis y que configuran el mundo social en el discurso en torno al APNC. Por medio de una aproximación cualitativa de los significados interpersonales en el estrato semántico-discursivo de la lengua, los hallazgos revelan las alineaciones y desalineaciones ideológicas. El Mostrador legitima la participación de la oposición en el Acuerdo y subraya la resistencia de la derecha. Emoljustifica a las instituciones políticas y al Gobierno en relación con el Acuerdo. La Tercera, por su parte, se posiciona como un medio que acentúa el rol del Gobierno en el Acuerdo y denuncia los conflictos producidos en un sector de la oposición, a propósito del protagonismo del diputado Gabriel Boric. Esos posicionamientos ideológicos contribuyen a territorializar semánticamente los ejes Acuerdo-Conflicto y Gobierno-Oposición.
¿Un "relato real"? Memoria, ficción y "yo" artístico en soldados de Salamina, del libro de Cercas (2001) a la adaptación cinematográfica de Trueba (2003)
Authors: Mendieta Elios , Fernández-Hoya Gema
Published: October 2023

En el presente estudio se realiza un análisis en profundidad de la obra literaria de Javier Cercas, Soldados de Salamina (2001), y de su adaptación homónima al cine, llevada a cabo por el director David Trueba en el año 2003. El primer propósito es llevar a cabo una aproximación a las similitudes y diferencias que tienen las dos obras artísticas, teniendo en cuenta que Trueba pretende realizar una adaptación lo más fiel posible a la novela que sirve como base, pero usando unos medios y técnicas originales para adaptar el lenguaje literario al cinematográfico. Son numerosos los puntos de interés que ofrece la aproximación comparada del libro y la película, y a ellos nos acercamos en el presente trabajo: la relación entre realidad y ficción, la importancia del “yo” creativo y la recuperación de la memoria.