bluuebunny/crossref_metadata_2025 huggingface dataset:
Дивергентне мислення та його роль у навчальній діяльності
Authors: Моісеєнко Наталя Володимирівна , Хараджян Олександр Агасійович , Семеріков Сергій Олексійович
Published: May 2022

Психологами було витрачено багато зусиль і часу на з’ясування того, як людина розв’язує нові, незвичайні, творчі задачі. Однак досі ясної відповіді на питання про природу творчості немає. Наука володіє тільки деякими відомостями, що дозволять частково описати процес розв’язання подібних задач, характеризувати умови, що впливають на знаходження правильного рішення. Одна з таких задач, сформульована Карлом Дюнкером, полягає в такому: знайти засіб руйнування у хворого пухлини шлунку шляхом інтенсивного опромінення спеціальними променями, не пошкодивши при цьому оточуючі пухлину здорові тканини.
Чисельні методи: об’єктний підхід
Authors: Семеріков Сергій Олексійович
Published: May 2022

У статті розглянуто: об’єктний підхід як метод дослідження складних систем, застосування об’єктного підходу до розробки математичного ПЗ, засоби активізації пізнавальної діяльності при вивченні чисельних методів у об’єктній методології.
Об’єктно-орієнтований підхід як засіб активізації пізнавальної діяльності
Authors: Семеріков Сергій Олексійович
Published: May 2022

“Наука про те, як замість лише бистродії машини використовувати чисельні методи та бібліотечні програми, переживає період дитинства і є однією з найважливіших галузей дослідження у майбутньому”. Ці слова Р.В. Хеммінга, сказані майже 40 років тому, і нині не втрачають своє актуальності. Тенденція до створення та систематичного використання математичних бібліотек, що виникла на початку 60-х рр., з кінця 80-х рр. стає домінуючою. Проте розвиток чисельних методів обумовлюється сьогодні також розвитком засобів обчислювальної техніки та технології програмування. Так, поява паралельних ЕОМ породила новий клас чисельних методів, орієнтованих на паралельні обчислення, а розвиток об’єктно-орієнтованого програмування (ООП) – новий напрямок, який сьогодні є провідним у чисельних методах: об’єктні обчислення.
Математичне моделювання фрактальних об’єктів
Authors: Хараджян Олександр Агасійович , Семеріков Сергій Олексійович
Published: May 2022

Мета роботи полягає у розробці імітаційних комп’ютерних моделей різних геометричних об’єктів, які б дозволили обчислювати фрактальну розмірність при різних параметрах моделі, накопичувати статистику та порівнювати розмірності передфракталів різних порядків.
«Він був голосом народного духу й знаряддям українського свiтогляду…»
Authors: Колоїз Ж. В.
Published: May 2022

У статті акцентовано на ролі «Енеїди» І. Котляревського у репрезентації кодів культури загалом та в ментальному просторі української культури зокрема, у відображенні фрагментів національної картини світу в аспекті специфіки етнічної свідомості, міфологічної та сміхової культури. Поему схарактеризовано крізь призму категорій прецедентності й інтертекстуальності, у площині взаємодії «свого» й «чужого» в межах художнього дискурсу.
The methodology of development of information and communication competence in teachers of the military education system applying the distance form of learning
Authors: Yahupov Vasyl V. , Kyva Vladyslav Yu. , Zaselskiy Vladimir I.
Published: May 2022

The paper theoretically substantiates the methodology of development of information and communication competence (ICC) in teachers of the military education system applying the distance form of learning. Scientific approaches to the concepts of “methodology” have been analyzed and the author’s vision of “the methodology of development of ICC in the military education teachers” has been suggested. In particular, they determine the methodological approaches to the methodology of its development, as well as its main stages, purpose, tasks, content, methods, types of training sessions, tools and organizational forms of learning.
Application of augmented reality technologies for education projects preparation
Authors: Iatsyshyn Anna V. , Kovach Valeriia O. , Lyubchak Volodymyr O. , Zuban Yurii O. , Piven Andriy G. , Sokolyuk Oleksandra M. , Iatsyshyn Andrii V. , Popov Oleksandr O. , Artemchuk Volodymyr O. , Shyshkina Mariya P.
Published: May 2022

After analysis of scientific literature, we defined that concept of “augmented reality” has following synonyms: “advanced reality”, “improved reality”, “enriched reality”, “mixed reality” and “hybrid reality”. Analysis of scientific literature and own practical experience of the use of augmented reality technologies application in educational practices allowed to state next: augmented reality technologies have a great potential for application in education; there are some cases of augmented reality use for school education; positive aspects of augmented reality technologies application in higher education institutions are confirmed by experiments (isolated cases); only few universities in Ukraine apply augmented reality technologies to educate students; only few universities in Ukraine have special subjects or modules in schedule to teach students to develop augmented reality technologies; various scientific events, mass events, competitions are held in Ukraine, and specialized training on the augmentation of augmented reality technologies is carried out, but this is non-systematic and does not have special state orientation and support. Features of introduction of virtual and augmented reality technologies at Sumy State University (Ukraine) are identified: “e-learning ecosystems” was created; in 2019, augmented and virtual reality research laboratory was established. Advantages and disadvantages of project activity in education are described: project activity is one of the most important components of educational process; it promotes creative self-development and self-realization of project implementers and forms various life competencies. It is determined that augmented reality application for implementation of educational projects will help: to increase students’ interest for educational material; formation of new competences; increase of students’ motivation for independent educational and cognitive activity; activation of educational activities; formation of positive motivation for personal and professional growth; conditions creation for development of personal qualities (creativity, teamwork, etc.). Current trends in implementation of educational projects were identified: most of the winner projects were implemented using augmented reality technology; augmented reality technologies were used in projects to teach different disciplines in higher education institutions. Augmented reality technology application for project activity has positive impact on learning outcomes and competitiveness of the national workforce; it will enhance the country’s position in the global economic space.
Methodological aspects of preparation of educational content on the basis of distance education platforms
Authors: Tarasov Alexander F. , Getman Irina A. , Turlakova Svetlana S. , Stashkevych Ihor I. , Kozmenko Serhiy M.
Published: May 2022

The urgency of application of technologies and means of distance learning in educational process of higher educational institutions is designated. The growing frequency of using cloud services and electronic textbooks in mobile and distance learning is noted. The importance of building educational environment is highlighted, where the key element is e-learning resources in digital form, including structure, subject content and metadata about the course. For higher educational institutions, the need for methodical support for the preparation of educational content on the basis of distance education platforms is determined. The experience of using the free distance education platform Moodle within the framework of the higher educational institution Donbass State Engineering Academy is considered. Methodical aspects of training content preparation on the basis of distance education platforms on the example of MoodleDDMA system are given. The General structure of the distance course and an example of evaluation of test tasks of the distance course (module) on topics are considered. An example of the presentation of the course on the basis of distance education platform MoodleDDMA is given. Conclusions about the experience of using the Moodle distance education system at the Donbass State Engineering Academy from the point of view of teachers and students are drawn. The perspective directions of researches and development of the Moodle distance education platform in completion and expansion of educational materials by multimedia elements and links, and also creation of the application for mobile devices for possibility of more effective use of the platform are allocated.
MarkHub Cloud Online Editor as a modern web-based book creation tool
Authors: Babenko Vitalina O. , Yatsenko Roman M. , Migunov Pavel D. , Salem Abdel-Badeeh M.
Published: May 2022

The main criterion for the competitiveness of a teacher or expert in the field of science is a good ability to present their knowledge to students in an interactive form without spending a lot of time in preparation. The purpose of the study is to analyze modern editors to create educational information content in the modern educational space and to present a modern tool for creating web books based on the latest IT technologies. Modern editors of web material creation have been analyzed, statistics of situations on mastering of knowledge by listeners, using interactive methods of information submission have been investigated. Using the WYSIWYG concept and analyzing modern information tools for presenting graphic material, an effective tool for teaching interactive web material was presented. An adapted version of the MarkHub online editor based on cloud technologies is presented. Using MarkHub cloud-based online editor for the unified development of educational content can significantly increase the author’s productivity in the content creation process. At the same time, the effects of reducing the time spent on formatting the external presentation of the content, making synchronous changes to different versions of the content, tracking the versions of the content, organizing remote teamwork in the network environment are achieved.
The usage of digital technologies in the university training of future bachelors (having been based on the data of mathematical subjects)
Authors: Hlushak Oksana M. , Semenyaka Svetlana O. , Proshkin Volodymyr V. , Sapozhnykov Stanislav V. , Lytvyn Oksana S.
Published: May 2022

This article demonstrates that mathematics in the system of higher education has outgrown the status of the general education subject and should become an integral part of the professional training of future bachelors, including economists, on the basis of intersubject connection with special subjects. Such aspects as the importance of improving the scientific and methodological support of mathematical training of students by means of digital technologies are revealed. It is specified that in order to implement the task of qualified training of students learning econometrics and economic and mathematical modeling, it is necessary to use digital technologies in two directions: for the organization of electronic educational space and in the process of solving applied problems at the junction of the branches of economics and mathematics. The advantages of using e-learning courses in the educational process are presented (such as providing individualization of the educational process in accordance with the needs, characteristics and capabilities of students; improving the quality and efficiency of the educational process; ensuring systematic monitoring of the educational quality). The unified structures of “Econometrics”, “Economic and mathematical modeling” based on the Moodle platform are the following ones. The article presents the results of the pedagogical experiment on the attitude of students to the use of e-learning course (ELC) in the educational process of Borys Grinchenko Kyiv University and Alfred Nobel University (Dnipro city). We found that the following metrics need improvement: availability of time-appropriate mathematical materials; individual approach in training; students’ self-expression and the development of their creativity in the e-learning process. The following opportunities are brought to light the possibilities of digital technologies for the construction and research of econometric models (based on the problem of dependence of the level of the Ukrainian population employment). Various stages of building and testing of the econometric model are characterized: identification of variables, specification of the model, parameterization and verification of the statistical significance of the obtained results.
Using Twitter in Ukrainian sociology majors training
Authors: Panchenko Liubov F. , Khomiak Andrii O. , Pikilnyak Andrey V.
Published: May 2022

The article deals with the problem of using cloud technologies in the training of sociology students in Ukraine. The popularity of Twitter in Ukraine is analyzed. The possibilities of using Twitter as a learning tool in classroom are discussed. List of recommended tweeters, including Ukrainian resources as well as resources related to population censuses is proposed. The article offers examples of student activities for Social Statistics and Demographics courses. The article demonstrates that new forms of student’s activity related to data analysis introduced by academics and practitioners (building art objects and storytelling based on data; shared data collection by citizens through mobile devices, “play with data” modern data visualization services) can be realized with Twitter resources and can help overcome the barriers that arise while studying quantitative methods.
Learning free software using cloud services
Authors: Fedorenko Elena H , Velychko Vladyslav Ye. , Omelchenko Svitlana O. , Zaselskiy Vladimir I.
Published: May 2022

The article deals with the use of cloud technology services in the study of free software. Free software is a social phenomenon based on the philosophy of freedom and the right to intellectual creative activity. To date, a significant number of software products have been created that are licensed under free software and not used in educational activities. The conducted research revealed the factors promoting and hindering the use of free software in educational activities. Conducted questionnaires, analysis of open data, research of scientists made it possible to conclude on the expediency of using free software in educational activities. Cloud technology is not only a modern trend of effective use of information and communication technologies in professional activity, but also a proven tool for educational activities. To get acquainted with the free software, the use of cloud technologies has been helpful, which is the goal of our research.
Motivation readiness of future software engineer's professional self-improvement and prospects of its formation in college cloud environment
Authors: Petrenko Larisa M. , Varava Iryna P. , Pikilnyak Andrey V.
Published: May 2022

Innovative technologies have an impact on the countries socio- economic development, the structure of labor market and educational services transformation. Rapid IT industry development constantly requires qualified programmers capable of professional self-improvement throughout life, the driving force of which is the individual motivation which activates the individual self-development process, optimizes thinking and develops special professional qualities, moral and ethical values. The main article purpose is to analyze the state of the form of motivational readiness for future programmer’s professional self-improvement, to identify problems of its formation in colleges and to determine the ways of its increase as one of the main factors of quality improvement. To achieve it, a complex of theoretical and empirical methods was used, with help of which a number of problems were revealed which slow down the process of improving the quality of future programmers professional training. To eliminate them, a system of phased motivation for future specialists professional self-improvement has been developed on the basis of general secondary education, which can be integrated into the teaching of both general education and professionally-oriented disciplines; ways of improving the quality of the educational process through the creation of a cloud of oriented environment, the introduction of innovative teaching technologies, special training of teachers in the system of professional development.
Auto Checker of Higher Mathematics - an element of mobile cloud education
Authors: Zhylenko Tetyana I.
Published: May 2022

We analyzed the main cloud services in the article. We also described the main contribution of mobile cloud technology to education. The article presents the author’s development from the field of mobile cloud education in higher mathematics. The design architecture of this application is described in detail: QR generator and scanner, authorization, sending tasks. Block diagrams and images are presented that clearly demonstrate the operation of the application. We showed an example of solving the integral from the section of integral calculus for higher mathematics and showed how to download the answer in the form of a QR code and find out whether it is correct or incorrect (this can be seen by the color on the smart phone screen). It is shown how this technology helps the teacher save time for checking assignments completed by students. This confirms its effectiveness. Such an application provides students and teachers with the ability to store and process data on a cloud computing platform.
Using augmented reality tools in the teaching of two-dimensional plane geometry
Authors: Rashevska Natalya V. , Semerikov Serhiy O. , Zinonos Natalya O. , Tkachuk Viktoriia V. , Shyshkina Mariya P.
Published: May 2022

One of the successful components of quality assimilation of educational material and its further use in the learning process is visualization of material in secondary education institutions. Visualizations need the subjects of the school course, which are the most difficult to understand and essentially do not have at the beginning of the study of widespread practical application, mostly mathematical objects. That is why this study aimed to analyze mobile tools that can be used to visualize teaching geometry. The object of the study is the process of teaching geometry in the middle classes of secondary schools. The subject of the study is the use of augmented reality tools in teaching geometry to students in grades 7-9. The study used such research methods as the analysis and justification of the choice of mobile augmented reality for the study of mathematics. Analyses displayed two augmented reality tools: ArloonGeometry and Geometry AR. In order to gain geometry instruction’s academic success for the students, these tools can be used by teachers to visualize training material and create a problematic situation. The use of augmented reality means in the geometry lessons creates precisely such conditions for positive emotional interaction between the student and the teacher. It also provided support to reduce fear and anxiety attitudes towards geometry classes. The emotional component of learning creates the conditions for better memorization of the educational material, promotes their mathematical interest, realizes their creative potential, creates the conditions for finding different ways of solving geometric problems.
EEG Abnormalities During Delirium as a Prodromal Feature of Dementia with Lewy Bodies: A Case Report
Authors: Carrarini Claudia , De Rosa Matteo Alessandro , Calisi Dario , Digiovanni Anna , Salute Pierpaolo , Dono Fedele , Evangelista Giacomo , Consoli Stefano , Russo Mirella , Ferri Laura , D’Ardes Damiano , Mattoli Maria Vittoria , Cipollone Francesco , Onofrj Marco , Bonanni Laura
Published: May 2022

Background:

A 79-year-old woman was admitted to the Neurology Clinic of the University of Chieti-Pescara for a syncope. At admission, the occurrence of an acute stroke was ruled out. Her cognitive status was unimpaired. After three days from the hospitalization, the patient experienced an episode of mixed delirium.

Objective:

The present case report shows a case of delirium-onset dementia with Lewy bodies (DLB) with a specific electroencephalographic (EEG) pattern from its prodromal stage.

Methods:

Delirium was assessed by 4AT test. During the hospitalization, the patient underwent a quantitative EEG (QEEG) with spectral analysis. At six months from the episode of delirium, she was tested by neuropsychological evaluation, QEEG, and 18F-fluorodeoxyglucose PET/CT to assess the onset of a possible cognitive decline.

Results:

At baseline, the QEEG exam showed a dominant frequency (DF) in the pre-alpha band (7.5 Hz) with a dominant frequency variability (DFV) of 2 Hz. This pattern is typical of DLB at early stage. After six months, she reported attention deficits in association with cognitive fluctuation and REM sleep behavior disorder. The neurological examination revealed signs of parkinsonism. Cognitive status resulted to be impaired (MoCA = 15/30). QEEG recording confirmed the presence of a DLB-typical pattern (DF = 7.5 Hz, DFV = 2.5 Hz). The 18F-FDG-PET/CT showed a moderate bilateral posterior hypometabolism (occipital and temporal cortex), with relative sparing of the posterior cingulate cortex compared to cuneus/precuneus ( Cingulate Island sign), and mild bilateral hypometabolism in frontal regions (suggestive of a DLB diagnosis).

Conclusion:

EEGs may represent supportive and validated biomarkers for delirium-onset prodromal DLB.
Association Between Plasma Biomarkers of Amyloid, Tau, and Neurodegeneration with Cerebral Microbleeds
Authors: McCarter Stuart J. , Lesnick Timothy G. , Lowe Val J. , Rabinstein Alejandro A. , Przybelski Scott A. , Algeciras-Schimnich Alicia , Ramanan Vijay K. , Jack Clifford R. , Petersen Ronald C. , Knopman David S. , Boeve Bradley F. , Kantarci Kejal , Vemuri Prashanthi , Mielke Michelle M. , Graff-Radford Jonathan
Published: May 2022

Background: Cerebral microbleeds (CMBs) are a common vascular pathology associated with future intracerebral hemorrhage. Plasma biomarkers of amyloid, tau, and neurodegeneration may provide a screening avenue to identify those with CMBs, but evidence is conflicting. Objective: To determine the association between plasma biomarkers (Aβ40, Aβ42, t-tau, p-tau181, p-tau217, neurofilament light chain (NfL)) and CMBs in a population-based study of aging and whether these biomarkers predict higher signal on Aβ-PET imaging in patients with multiple CMBs. Methods: 712 participants from the Mayo Clinic Study of Aging with T2* GRE MRI and plasma biomarkers were included. Biomarkers were analyzed utilizing Simoa (Aβ40, Aβ42, t-tau, NfL) or Meso Scale Discovery (p-tau181, p-tau217) platforms. Cross-sectional associations between CMBs, plasma biomarkers and Aβ-PET were evaluated using hurdle models and multivariable regression models. Results: Among the 188 (26%) individuals with≥1 CMB, a lower plasma Aβ42/Aβ40 ratio was associated with more CMBs after adjusting for covariables (IRR 568.5 95% CI 2.8–116,127). No other biomarkers were associated with risk or number CMBs. In 81 individuals with≥2 CMBs, higher plasma t-tau, p-tau181, and p-tau217 all were associated with higher Aβ-PET signal, with plasma p-tau217 having the strongest predictive value (r2 0.603, AIC –53.0). Conclusion: Lower plasma Aβ42/Aβ40 ratio and higher plasma p-tau217 were associated with brain amyloidosis in individuals with CMBs from the general population. Our results suggest that in individuals with multiple CMBs and/or lobar intracranial hemorrhage that a lower plasma Aβ42/Aβ40 ratio or elevated p-tau217 may indicate underlying cerebral amyloid angiopathy.
Automatic ECG analysis system with hybrid optimization algorithm based feature selection and classifier
Authors: Kaliappan Manikandan , Manimegalai Govindan Sumithra , Kuppusamy Mohana Sundaram
Published: May 2022

Cardio vascular disease threatens human life with higher mortality rate. Therefore it is quite important to monitor. An arrhythmia is an abnormal heart beat and rhythm which causes the disease. The best tool to find the heart rhythm of heart is Electro Cardiogram (ECG) which provides information about the different types of arrhythmias. This paper aims at proposing an automatic framework by employing multi-domain features to classify ECG signals. Proposed work uses optimum method of feature selection to improvise the efficiency of the classification process. A hybrid optimization algorithm is used for feature selection and proposed to optimize the parameters of the existing Support Vector Machine (SVM) classifier. Proposed hybrid optimization algorithm was developed using Particle Swarm Optimization (PSO) and Migration Modified Biogeography Based Optimization (MMBBO) algorithm. Algorithm provides an improved solution to the optimizing the parameters of ECG signals. Results are evaluated by implementing in MATLAB software and the performance is justified with comparative analysis. The proposed framework enhances the process of automatic prediction of various arrhythmias or rhythm abnormalities which performs in gaining better accuracy. For data sets, the average classification accuracy of this method is 97.89%. This result is an improvement of 4–5% over the comparison of other methods.
RETRACTED: Extended EDAS method for multiple attribute decision making in mixture z-number environment based on CRITIC method
Authors: Sun Hong , Wei Gui-Wu , Chen Xu-Dong , Mo Zhi-Wen
Published: May 2022

This article has been retracted. A retraction notice can be found at https://doi.org/10.3233/JIFS-219433.
A unified framework for abstractive summarization over prompt language model and pointer mechanism
Authors: Li Ping , Yu Jiong , Li Min , Chen JiaYin , Yang DeXian , He ZhenZhen
Published: May 2022

In this paper, we propose a unified framework for an abstractive summarization method which uses the prompt language model and a pointer mechanism. The abstractive summarization problem usually includes a text encoder and a text decoder. Current methods usually employ an encoder-decoder architecture to condense and paraphrase a document. To better paraphrase a document, we propose a unified framework for an abstractive summarization model that only uses a topic-sensitive decoder. Our model has a prompt input module, a text decoder and a pointer mechanism. We apply our model to Xsum, Gigaword, and CNN/DailyMail summarization datasets, and experimental results demonstrate that our model has achieved state-of-the-art results on the Xsum dataset and comparable results on the other two datasets.
Efficient descriptors selection in automatic image retrieval using DENOL
Authors: Ignat Anca , Luca Mihaela , Păvăloi Ioan , Lazăr Camelia
Published: May 2022

A well-structured and indexed database alleviates the computing burden on large data. This paper describes groundwork for presenting the data in a compact, distinctive form, improving the procedures of applying keypoint detection algorithms to preprocess and reduce the relevant features of the images. Our method computes for an image a number of SURF keypoints in a given interval, by adapting the threshold related to the Hessian matrix blob detector. This type of approach allows selecting the level of detail to use in image description and gives us control over the computing time. We named this method DENOL (Descriptor Number On Limits) and tested it on images from two datasets, UCID and an original image database which we propose, IIT_DB. Very good retrieval results and a significantly reduced computing time are achieved.
RETRACTED: Spatiotemporal variation and driving factors analysis on the expansion of the main urban agglomerations in China
Authors: Li Qi , Hong Liang
Published: May 2022

This article has been retracted. A retraction notice can be found at https://doi.org/10.3233/JIFS-219433.
Does electrical stimulation synchronized with ankle movements better improve ankle proprioception and gait kinematics in chronic stroke? A randomized controlled study
Authors: Cho Ji-Eun , Shin Joon-Ho , Kim Hogene
Published: May 2022

BACKGROUND: Individuals with stroke have impaired sensorimotor function of ankle. OBJECTIVE: To investigate the effects of passive biaxial ankle movement training synchronized with electrical stimulation therapy (AMT-EST) on ankle proprioception, passive range of motion (pROM), and strength, balance, and gait of chronic stroke patients. METHODS: Thirty-five stroke patients were randomized. The experimental group received a total of 20 AMT-EST sessions. The control group received only EST. Primary outcome measures were ankle functions. Secondary outcome measures were clinical assessments of motor, balance, and gait-related functions. All assessments were compared before and after the intervention. RESULTS: The experimental group had significantly improved ankle dorsiflexor strength (p = 0.015) and ankle pROM during foot supination (p = 0.026) and pronation (p = 0.004) and clinical assessment (Fugl–Meyer Assessment of the lower extremities [FM-L], Berg Balance Scale, Timed Up and Go test, Fall Efficacy Scale, walking speed, and step length; all p < 0.05) values. The regression model predicting ankle proprioception showed significantly large effects (adjusted R2 = 0.493; p < 0.01) of the combined FM-L score and time since stroke. CONCLUSION: Biaxial AMT-EST resulted in better ankle pROM and strength than conventional EST. Ankle proprioception was not significantly improved after AMT-EST and was predicted by the FM-L score and time since stroke.
Evaluation of an ergonomically designed schoolbag: Heart rate variability and body discomfort rating
Authors: Ramadan Mohamed Z. , Al-Tayyar Sultan N. , Alhaag Mohammed H. , Soliman Ahmed T. , Abdelgawad Abdelaty E.
Published: May 2022

BACKGROUND: Unsuitable schoolbags may stress the spine and promote poor body posture, particularly for school students. Global recommendations have suggested that schoolbag weight must not exceed 10% of a healthy student’s body mass, which would need continuous monitoring and enforcement. OBJECTIVES: The present study presents a comparison between an ergonomically designed schoolbag, which helps reduce the potential effects of carrying a load, and a commercial one. METHODS: A total of 30 healthy male students were recruited for this experiment. Independent variables determined were schoolbag type (ergonomically designed and commercial schoolbags) and three load levels based on body mass percentage (i.e., 10%, 15%, and 20% of body mass). Heart rate variability (HRV) and body discomfort rating were then measured. RESULTS: Our results showed that the developed schoolbag promoted enhanced subjective measures and HRV response at 15% and 20% of body mass. Participants who wore the developed schoolbags experienced significantly lesser neck, shoulder, upper and lower trunk discomfort than those who wore the traditional ones. Changing the load percentage from 10% to 15% caused an increase in heart rate among participants carrying a commercial schoolbag but a decrease in heart rate among those carrying the developed schoolbag. CONCLUSIONS: The findings presented herein suggest introducing strategies for reducing the potential impact of load carrying through the combined effect of new educational inventions and policy changes.
Comparison of two different GSI scanning protocols in head and neck CT angiography: Image quality and radiation dose
Authors: Zhang Tianle , Zhao Sai , Liu Yiwen , Liu Zhichao , Ma Zepeng , Zuo Ziwei , Zhao Yongxia
Published: May 2022

OBJECTIVES:

To compare image quality and radiation dose of computed tomography angiography (CTA) of the head and neck in patients using two Gemstone Spectral Imaging (GSI) scanning protocols.

METHODS:

A total of 100 patients who underwent head-neck CTA were divided into two groups (A and B) according to the scanning protocols, with 50 patients in each group. The patients in group A underwent GSI scanning protocol 1 (GSI profile: head and neck CTA), while those in group B underwent GSI scanning protocol 2 (GSI profile: chest 80 mm). All images were reconstructed using 40% and 70% pre- and post-adaptive level statistical iterative reconstruction V (pre-ASiR-V and post-ASiR-V) algorithms, respectively. The CT dose index (CTDIvol) and dose-length (DLP) product were recorded and the mean value was calculated and converted to the effective dose. CT values, signal-to-noise ratio (SNR), and contrast-to-noise ratio (CNR) of all images were calculated. Additionally, subjective image evaluation was conducted by two independent radiologists using a five-point scoring method. All data were statistically analyzed.

RESULTS:

There were no significant differences in the CT values, SNR, CNR, and subjective score between groups A and B ( p > 0.05); however, the mean effective dose (1.2±0.1 mSv) in group B was 45.5% lower than that in group A (2.2±0.2 mSv) ( p < 0.05).

CONCLUSIONS:

GSI scanning protocol 2 could more effectively reduce the radiation dose in head-neck CT angiography while maintaining image quality compared to GSI scanning protocol 1.
New approaches to the organization of district heating
Authors: Glamazdin P. , Baranchuk K. , Priymak О.
Published: May 2022

District heating systems in Ukraine's cities are in deep crisis and need decisive action to overcome it. The crisis began long ago, in the 1990s, and is gradually deepening. Several attempts to stop this process and level the playing field at the state level have failed. At the same time, the process of intensive development of such systems has begun in the countries of Northern Europe. Moreover, both at the theoretical level and in the practical implementation of theoretical developments. According to the theoretical analysis of the life cycle of district heating systems, they are now in the fourth stage of their development in the countries of Northern Europe. This stage has the main features - low temperatures in the network (temperature graph), the combination of district heating systems with district heating systems and their deep integration into the overall energy system of cities, as well as the gradual replacement of fossil fuels with renewable energy sources. District heating systems in the cities of Ukraine are only in the second stage of development. In order to remain competitive against decentralized systems, a sharp transition to the third and at least partially the fourth stage of development of such systems is required. district heating systems are in the active phase of their expansion in European countries and have great prospects for further development, including in Ukraine. District heating systems together with cold supply systems in the process of development are integrated into the energy supply systems of cities and in general in the urban economy. Renewable heat sources will increasingly displace the equipment for combustion of excavated fuel with the prospect of complete abandonment of the latter. In order to preserve the remnants of district heating systems in Ukrainian cities, it is necessary to study and use the experience of the Nordic countries and organize this work at the state level. Unfortunately, neither the governing bodies nor the general public have this understanding. The extraordinary task is to improve the skills of managers and the operational status of city district heating systems and officials of city administrations.
Technological parameters of the combustion process of brown coal in a vortex furnace
Authors: Norchak V.
Published: May 2022

Ukraine ranks seventh in the international list of countries by the number of coal reserves in the country. Optimal use of this natural resource is the key to active industrial development and the basis for increasing the country's energy independence. There are large deposits of coal on the territory of Ukraine, so historically this type of fuel has been the basis of the energy sector of the economy. Despite extensive experience, the optimal way to burn coal has not been established. Even minor changes in the design of solid fuel furnaces significantly affect the efficiency of the heat transfer process inside the boilers. Therefore, the study of various design features of furnaces is relevant and promising. The results of numerical calculation of the parameters of the process of burning brown coal in a vortex furnace with counter-swirling flows are presented. The fractional composition of the fuel varies from 25 μm to 250 μm. A comparison of fuel and air mixture supply schemes from the bottom of the furnace and from the top of the furnace is performed. It has been shown that the supply of fuel from the bottom of the furnace removes solid ash at the top of the furnace, leads to a more even distribution of flue gas temperatures within the furnace volume and reduces coke content in fuel particles during lignite combustion. The results of numerical simulation of brown coal combustion processes in a vortex furnace with counterflows show that among the three schemes considered, the third scheme with lower fuel supply and removal of solid ash from the top of the furnace has the best characteristics. In this case, 99.4% of the capture of particles is provided, the particles do not accumulate in the furnace volume due to the extraction of ash. However, the mechanical underburning of coke particles with a diameter of 25 μm to 250 mm, which is captured, is 8.1% and requires afterburning. The second scheme does not provide efficient combustion of coal due to the accumulation of particles in the furnace volume.
Scheme of incineration of wood waste in a furnace with a circulating boiling bed
Authors: Dzhyoev R.
Published: May 2022

Cyclonic-vortex technology of solid fuel combustion allows to reduce the furnace volume of the boiler unit, dimensions and weight. Mixing of fuel particles and air in a swirling stream provides intensive heat exchange and fuel combustion in a limited furnace volume. The results of improving the thermal scheme of combustion of pulverized fuel (wood waste) in a circulating fluidized bed are presented. The results of numerical calculations showed the possibility of burning sawdust with a particle diameter of 25 μm to 750 μm. When the air-fuel mixture is supplied from the bottom of the furnace, and the secondary air from the top of the furnace, ash is removed in liquid form through a slot in the lower part of the furnace. It was found that with a sawdust moisture content of 10%, ash content Ac = 0.6%, a higher combustion heat of 17.7 MJ / kg, particle entrainment is 19.2 %, the degree of particle burnout is 92.5%, which requires afterburning of entrainment in a circulating boiling layer. One of the ways to improve Ukraine's fuel and energy balance is to use alternative sources of heat to natural gas, namely solid fuels or wood industry waste. It is necessary to involve specialized technologies for burning solid fuels. Currently, there is an incomplete theoretical and practical knowledge about the processes of burning wood waste.The use of natural gas as a source of thermal energy occupies a significant part of Ukraine's fuel and energy balance. To increase the share of solid fuels, it is necessary to study in more detail the processes of their combustion and the use of methods of intensification of heat transfer processes in the furnaces of solid fuel boilers. The results of numerical calculations showed that the use of vortex furnace instead of direct flow in the scheme CKS increases the residence time of particles in the furnace, which reduces the multiplicity of fuel circulation, reduce the size and weight of the furnace
Improving the efficiency of the technological scheme of industrial high-temperature air heater
Authors: Makarov A. , Senchuk M. , Khodos A. , Kirienko M.
Published: May 2022

Two typical schemes of air heating in gas-oil air heaters (heat generators) are analyzed, the structural difference of which is characterized by the mutual location of the fire tube - combustion chamber and convective heating surface (chimneys). The improved constructive scheme of the developed high - temperature air heater - heat generator with air heating for technological processes of drying is described. The main technical and operational advantages of the accepted scheme of heating of air which differs in high economy and reliability are noted. New technical solutions in the developed design of the TG heat generator are considered for the purpose of increase of its efficiency and reliability at long operation. The adoption of these decisions on the basis of laboratory and computational research is substantiated. The scheme of the fire stand on studying the process of heat removal from heat-stressed heating surfaces by radiation-convective heat transfer with the use of heat-absorbing screens is given. Designed cooling systems for heat pipes of heat generators are described on the basis of bench researches and the calculation model is developed. The calculated dependences of the change in the temperature of the metal of the heated walls on the velocity of the air flow in a single channel and on the width of the double air channel with a heat-absorbing screen are given. The results of calculation researches for the purpose of optimization of a convective surface of heating and entrance sites of chimneys in the form of dependences of change are shown: length of convective packages depending on speed of flue gases; temperature of gases, metal of walls and air on the initial section of chimneys at various options of its configuration. Patented technical solutions in the designs of industrially implemented high-temperature air heaters - gas heat generators TG-0.95-200, TG-1.9-200 and ТГ-2,4-200 with an air heating temperature of 200 oC have been implemented. Their high efficiency and reliability during many years of operation as a part of drying installations at the enterprises of the food industry of Ukraine, Belarus, the Russian Federation, Azerbaijan, Uzbekistan, Turkmenistan, Kyrgyzstan, Poland are confirmed.
Implementation of european regulations of green building in the construction industry of Ukraine
Authors: Savchenko Antonina M. , Tkachenko Таtiana М.
Published: May 2022

Construction is an example of anthropogenic activity that not only harms the environment, but often causes the destruction and even destruction of ecosystems. The threat is posed by all stages of construction from design and survey work to maintenance of the finished building and its disposal at the end of the housing cycle. By creating an additional environmental burden, the construction industry has a negative impact on human health. Instead of natural ecosystems, as a result of construction activities, urban areas are created – a zone of continuous development within the city or urban agglomeration. Whether the urban environment will be comfortable for a person or, on the contrary, a person will feel ecological discomfort depends on the work of architects, builders, and the quality of building materials. The ecological state of cities can be attributed to the global environmental problems of mankind. The desire to reduce the impact on the environment encourages the search for ways to improve, innovative methods, the latest technologies, safe for the environment and human health building materials. Current trends in the implementation of green building standards are promising for overcoming the environmental crisis of cities, and make it possible to reduce the impact of the construction industry on the environment. In order to accelerate the pace of implementation of aspects of "green building" it is necessary to implement European environmental standards in the legislation of Ukraine. The introduction of mandatory environmental certification of buildings at the legislative level (starting with new buildings) is one of the most important steps in this direction. The basis is the already popular and time-tested British international certification system BREEAM, the rating system for energy efficient and environmentally friendly buildings LEED (Leadership in Energy and Environmental Design, USA), or DGNB (Deutsche Gesellschaft für Nachhaltiges Bauen, Germany).
Forensic Entomology
Authors: Andersen Erika , Mizell Russell , Kochert Jessica , Jordan Joy
Published: May 2022

Forensics is a hot topic, with many movies and popular television shows (such as “CSI”) introducing youth to the tools, processes, and critical thinking skills needed to solve various crimes. Within this world, insects have a growing presence. The field of forensic entomology focuses on the information that insects provide investigators about the time, location, and criminal negligence within a wide variety of criminal cases. This curriculum is a tool for teaching youth grades 6–8 about the contributions that insects make to the world of forensics. This three-week series of lesson activities is designed for use in after-school programs, summer day camps, and 4-H clubs. However, this package also includes the Next Generation Sunshine State Standards for teachers within formal classroom settings. It was written by Erika Andersen and Russell Mizell with Jessica Kochert and Joy Jordan and published by the UF Department of 4-H Youth Development, January 2011.
4H-ENL-41/4H310: Forensic Entomology (ufl.edu)
Evolution of Water Quality Regulations in the United States and Florida
Authors: Migliaccio Kati W. , Li Yuncong , Obreza Thomas A.
Published: May 2022

Revised! Water is essential to sustain life. Not only do we all need a certain quantity of water each day, but the quality of the available water is also critical. Water quality protection in the United States evolved from initially ensuring navigability of waterways to protecting our natural ecosystems. This 5-page fact sheet provides a background for understanding water quality and how it is evaluated and regulated in the U.S. with particular focus on the state of Florida. Written by Kati W. Migliaccio, Yuncong Li, and Thomas A. Obreza. Published by the UF Department of Agricultural and Biological Engineering, January 2011.
ABE 381/AE431: Evolution of Water Quality Regulations in the United States and Florida (ufl.edu)
Creep Grazing for Suckling Calves - A Pasture Management Practice
Authors: Newman Yoana C. , Mayo Doug E. , Vendramini Joao , Chambliss Carrol G.
Published: May 2022

The concept of creep grazing is based on the fact that the nutritional requirements of suckling calves are much higher than those of cows. Calves creep grazing on high quality forage that provides high intake of digestible energy and protein make extra growth while the cows are grazing lower quality pasture. Learn more in this revised 4-page fact sheet written by Y.C. Newman, D.E. Mayo, J. Vendramini, and C.G. Chambliss and published by the UF Department of Agronomy, March 2011.
SS-AGR-211/AG193: Creep Grazing for Suckling Calves—A Pasture Management Practice (ufl.edu)
Control of Palmer Amaranth in Agronomic Crops
Authors: Ferrell Jason , Brecke Barry , Smith Clyde
Published: May 2022

SS-AGR-338, a 5-page fact sheet by J. Ferrell, B. Brecke, and C. Smith, provides producers with examples of diverse program approaches for managing Palmer amaranth in corn, cotton, peanut, and soybean. Published by the UF Department of Agronomy, December 2010.
SS-AGR-338/AG348: Control of Palmer Amaranth in Agronomic Crops (ufl.edu)
Weed Control for Winter Faba Bean Cover Crop in South Florida
Authors: Odero Dennis C.
Published: May 2022

Faba bean is an important leguminous winter crop in warm temperate and subtropical areas that has been cultivated for more than 10,000 years as a source of protein in human and livestock diets. It is also grown to enhance yields of other crops. Faba bean provides nitrogen in agricultural systems through the unique process of biological fixation of atmospheric nitrogen by symbiosis with Rhizobium bacteria. This substantially reduces the need for nitrogen fertilizers, which contribute to both carbon dioxide and nitrous oxide emissions. This 2-page fact sheet written by D.C. Odero provides weed control recommendations. Published by the UF Department of Agronomy, April 2011.
SS-AGR-345/AG355: Weed Control for Winter Faba Bean Cover Crop in South Florida (ufl.edu)