bluuebunny/crossref_metadata_2025 huggingface dataset:
ІННОВАЦІЙНІ ТЕХНОЛОГІЇ ФОРМУВАННЯ ПРОФЕСІЙНОЇ КУЛЬТУРИ МАЙБУТНІХ УЧИТЕЛІВ СПОРТИВНО-ХОРЕОГРАФІЧНИХ ДИСЦИПЛІН
Authors: Шевченко О. В.
Published: November 2021

У статті обґрунтовуються шляхи формування професійної культури в майбутніх учителів спортивно-хореографічних дисциплін інноваційними засобами фізичної культури, спорту і мистецтва. З’ясовано, що студенти під час навчання в закладі загальної середньої освіти повинні долучатися до процесу формування професійної культури на усвідомленому рівні, а потім вдосконалювати її для досягнення більш високих результатів у професійній діяльності. Доведено, що провадження інноваційних технологій у сучасну освіту суттєво прискорює передавання знань і накопиченого технологічного та соціального досвіду людства не тільки від покоління до покоління, а й від однієї людини до іншої. Сучасні інноваційні технології, підвищуючи якість навчання й освіти, дають змогу особистості успішніше й швидше адаптуватися до навколишнього середовища, соціально-економічних змін, сприяють розвитку інноваційного мислення та креативності. Освітні інновації вишу полягають у сучасному моделюванні, організації нестандартних лекційних та практичних занять; індивідуалізації засобів навчання; розробці нової системи контролю оцінки знань; застосуванні комп’ютерних, мультимедійних технологій, навчально-методичної продукції нового покоління. У підготовці майбутнього вчителя особливе місце посідає формування педагогічної культури. Лише в культурному середовищі можуть сформуватися фахівці, здатні вільно й широко мислити, створювати інтелектуальні цінності, яких завжди потребує школа, суспільство загалом. Культура є підґрунтям формування особистості педагога. На думку науковців, неможливо опанувати будь-яку професію без всебічного розвитку особистості, фізичного, морального, духовного тощо. Доведено, що розробка нових науково-методичних засад у галузі вищої хореографічної освіти належить до актуальних проблем загальної естетичної культури та вимагає подальшої розробки та удосконалення теоретичного курсу з опанування студентами психолого- педагогічних компонентів в освітній діяльності. Сприятливими умовами для набуття майбутніми педагогами професійного педагогічного досвіду є проведення майстер-класів, що передбачає набуття студентами можливості ознайомитися з різними формами подачі матеріалу, сформувати уявлення про поліваріативність методик проведення занять, здійснити їх порівняльний аналіз, узагальнення, визначити шляхи формування власної методики викладання спортивно-хореографічних дисциплін з урахуванням передового педагогічного досвіду.
РОЛЬ ІНФОРМАЦІЙНО-КОМПʼЮТЕРНИХ ТЕХНОЛОГІЙ У ДИСТАНЦІЙНІЙ ОСВІТІ
Authors: Гаврилова О. В. , Максименко Ю. С.
Published: November 2021

Стаття присвячена характеристикам та можливостям використання інформаційно-комп’ютерних технологій у процесі дистанційного навчання. У статті розглядаються дистанційні технології навчання, що використовують аудіо-, відео- і комп’ютерні системи, пов’язані через канали зв’язку, які все частіше замінюють звичне нам навчання. Розглянуто використання нових технологій передачі інформації, що істотно впливають на весь процес навчання, заснований на цих технологіях. Проникнення комп’ютерних телекомунікацій у сферу освіти ініціювало розвиток нових освітніх технологій, коли технічний складник освітнього процесу приводить до зміни самої суті освіти. Зазначено, що у віртуальному освітньому середовищі навчальних закладів повністю реалізуються потенційні можливості перебудови системи освіти, які мають у тому числі і традиційні технології. У статті запропоновані шляхи розширення можливостей освітнього середовища за допомогою ІКТ як різноманітними програмними засобами, так і методами розвитку креативності учнів. До числа таких програмних засобів відносяться моделюючі програми, пошукові, інтелектуальні навчальні, експертні системи, програми для проведення ділових ігор. Комунікаційні технології дають змогу по-новому реалізовувати методи, що активізують творчу активність. У статті проаналізовано програмне забезпечення для дистанційного навчання та різноманітні дистанційні курси, які повинні відповідати основним завданням та цілям навчання. Дистанційні курси повинні забезпечувати максимально можливу інтерактивність між учнем і викладачем, між учнем і навчальним матеріалом, що важливо для ефективного контролю правильного засвоєння матеріалу. Тому програмне забезпечення дистанційного навчання є важливим чинником ефективності такого навчання. Доведено, що дистанційна форма освіти − це створення єдиного інформаційно-освітнього простору навчального закладу, куди слід включати різноманітні електронні джерела інформації (включаючи мережеві): віртуальні бібліотеки, бази даних, консультаційні служби, електронні навчальні посібники тощо.
Game Selection Method for Game-Based History Learning
Authors: Lee Woo-Hyun , Lee Won-Hyung
Published: November 2021

Games that are used in research on game-based learning and serious games that are used for education are usually exclusive, making it difficult for teachers to attempt new methods in education. According to the data published in 2009 by the European Schoolnet (EUN), a network of European Ministries of Education, most of the problems that teachers face when using games in class are related to game selection. Based on the aforementioned data, this study presents a set of criteria for selecting games in order to solve the inconvenience experienced by teachers. The games, which are used as teaching materials for game-based learning, have been replaced with commercial games that are easily purchased, rather than serious games that are difficult to obtain the licensing. Based on the criteria, two games were selected in this study and the classes were conducted at the educational site. Compared to the group trained with textbooks, it has been confirmed that the effect of game-based learning was sufficient. In addition, five out of ten problems that teachers face were resolved.
The Role and Application of Situational Teaching in Teaching Chinese as a Foreign Language – A Case Study of Primary Oral English Class
Authors: Shi Ruochen
Published: November 2021

The law of language learning has a theoretical basis. Language learning is a process of active learning, not of passive acceptance. Situational teaching is the extension and development of constructivist teaching. The correct use of situational teaching can stimulate students’ interest, facilitate a harmonious relationship between teachers and students, as well as promote the cultivation of other skills among students, so as to improve the teaching quality of oral Chinese teaching as a foreign language and effectively complete the teaching task. However, there are some issues that should be emphasized when using the situational teaching method, such as how to create situations effectively, the problems that teachers should pay attention to when creating situations, and the principles of creating situations.
Educational Development in the New Era: New Changes, New Discussions, and New Enlightenment
Authors: Liu Tingting
Published: November 2021

Since the 18th National Congress of the Communist Party of China (CPC), there are new requirements for the development of education in China. In view of this, the Party and the State have proposed new opinions on the development of education around the idea of developing education with people-centered approach. In the new era, adhering to the new exposition of education to guide the reform and development of China’s education enlightens us to ensure the modernization of education, serve the major development direction of the country, and assume people’s satisfaction as the yardstick.
El construccionismo en educación superior “el arte de saber comunicar lo aprendido”. Una experiencia docente
Authors: Morales Clemotte Lelis Noelia
Published: November 2021

El construccionismo retoma los aportes del constructivismo y de las teorías de la psicología social genética, y reconoce que la función del lenguaje es la construcción de mundos humanos, adquiriendo significado a partir de la interacción social. El objetivo del estudio fue identificar las capacidades de comunicación, determinar la adhesión de los estudiantes y determinar la percepción de la estrategia implementada. La metodología aplicada fue, descriptiva, cuantitativa, de corte transversal. La muestra no probabilística por conveniencia, participaron 40 estudiantes de la Carrera de Kinesiología y Fisioterapia que desarrollaron programas radiales. Los datos se recopilaron mediante un cuestionario cerrado y análisis del rendimiento académico. Los resultados revelan que el 92% de los estudiantes cumplen las capacidades de saber comunicar a la sociedad lo aprendido. Del mismo modo, la adhesión de los estudiantes a esta estrategia de aprendizaje fue del 100%. Igualmente, la percepción del estudiante sobre el aporte de esta actividad a su desenvolvimiento profesional es positiva en el 80%. Por tanto, los resultados demuestran que las innovaciones aplicadas utilizando las tecnologías de la información y comunicación, como la red social Facebook y la emisión radial, con el acompañamiento docente y del profesional de prensa, facilitó en gran medida la adhesión y participación activa de los estudiantes en este desafío. Entre las competencias que debían lograr los estudiantes universitarios se encuentran el saber comunicar, interactuar y relacionarse con las personas. En la investigación la gran mayoría manifestó haber logrado dicha competencia, corroborándose en los resultados de rendimiento académico.
Environmental Energy Harvesting Techniques to Power Standalone IoT-Equipped Sensor and Its Application in 5G Communication
Authors: Singh Satyanand
Published: November 2021

In the recent few years, due to its significant deployment to meet global demand for smart cities, the Internet of Things (IoT) has gained a lot of attention. Environment energy harvesting devices, which use ambient energy to generate electricity, could be a viable option in near future for charging or powering stand-alone IoT sensors and electronic devices. The key advantages of such energy harvesting gadgets are that they are environmentally friendly, portable, wireless, cost-effective, and compact. It is significant to propos and fabricate an improved, high-quality, economical, and efficient energy harvesting systems to overcome power supply to tiny IoT devices at the remote locations. In this article, various types of mechanisms for harvesting renewable energies that can power sensor enabled IoT locally, as well as its associated wireless sensor networks (WSNs), are reviewed. These methods are discussed in terms of their advantages and applications, as well as their drawbacks and limitations. Furthermore, methodological performance analysis for the decade 2005 to 2020 is surveyed in order to identify the methods that delivered high output power for each device. Furthermore, the outstanding breakthrough performances of each of the aforementioned micro-power generators during this time period are emphasized. According to the research, thermoelectric modules can convert up to 2500×10^(-3) W/cm^2, thermo-photovoltaic 10.9%, piezoelectric 10,000 mW/cm^3 and microbial fuel cell 6.86 W/m^2 of energy. Doi: 10.28991/esj-2021-SP1-08 Full Text: PDF
A STUDY OF MUTHUSWAMI DIKSHITAR’S EXPERTISE ON VARIOUS ELEMENTS OF MUSICOLOGY REFLECTED THROUGH HIS COMPOSITIONS
Authors: Karanth Utpala , Rangan Ramkrishna
Published: November 2021

Musicology is the study of scientific and intellectually handling of music. This is a colossal subject of music and inquest into the History and phenomenon of music including life and works of Composers and performers, music theory like melody, rhythm, harmony, modes, aesthetics, form etc. The Historical evidence of Indian Classical music have been discussed in several ancient texts like Veda’s, Upanishads, epics way back 2000 years ago. The Rigveda, Yajurveda, Samaveda and Atharvaveda contains ritual hymns and incantations (vedic chants), praising the specific dieties during the Sacrificial rituals. The South Indian music has a phlegmatic and pedagogic nature when compared with the music of other unconsecrated Hindustani traditions. This paper highlights the proficiency of Dikshitar’s knowledge of Musicology bequeathed from his father Ramaswami Dikshitar, a scholar, musician, learned musicologist, and recipient of many honours and emoluments in the knowledge of music gained sufficient knowledge in musicology who had settled down at Tiruvarur where Dikshitar was born. Tiruvarur then was a seat of learning of Sanskrit and Vedanta. Dikshitar’s compositions reflect his deep and thorough knowledge widely through the interpretation of their literature as seen in famous compositions like ‘Vatapi Ganapatim Bhaje’, ‘Amrutavarshini’ and others will be discussed with the various rasas created through the ragas as enunciated in the Natyashastra of Bharat Muni.
SARS-CoV-2 related HIV, HBV, RSV, VZV, Enteric viruses, Influenza, DENV, S. aureus and TB co-infections
Authors: Ammara Azhar , Umar Saeed , Zahra Zahid Piracha , Areesha Amjad , Aftab Ahmed , Syeda Itrat Batool , Maimoona Jabeen , Areej Fatima , Fakhia Noreen , Rehan Uppal , Rizwan Uppal
Published: November 2021

SARS-CoV-2 a virulent disease that established the entire wide world due to its severity. Its 1st case was rumored in Wuhan, China within the year 2019 and it had been the beginning of this pandemic. This virus killed virtually a complete of 4,465,683 folks round the globe until date. Despite the fact that viral co-infections have the ability to alter the host’s illness pattern, few research have looked at the disease outcomes in patients who are infected with HIV and hCoVs. Despite the fact that HIV-positive people can be infected with hCoVs, researchers are now revealing that their chances of acquiring serious CoV-related disorders are typically similar to what is seen in the general population. The relation between SARS-CoV-2 and HBV was summarized rather HBV effects the severity of COVID patient or not. SARS-CoV-2 could be a severe acute metabolic process syndrome. Scientists found ways in which to treat this virus, some were useful and alternative weren’t that a lot of effective. Immunizing agent was one among the most important considerations for the entire world. This virus conjointly fashioned an entry for alternative co-infections too. SARS-CoV-2 and influenza virus, both causes respiratory diseases which confer as an extensive array of illness from asymptomatic or benign to critical disease and death. Also the mode of transmission and symptoms of influenza virus and SARS-CoV-2 are same. Viral and bacterial rate is higher in SARS-CoV-2 negative patient but are comparable. Serologies facts confirmed that patients with effective results for dengue virus (DENV) NS1 antigen and anti-dengue IgM were also attentive to COVID-19 speedy antibody tests, suggesting dengue COVID-19 co-infection. Mixed infection of dengue and COVID-19 needs unique interest from all dengue-common nations in Asia, especially the ones with limited resources. To our knowledge, this is the primary showed case of co-infection of dengue and COVID-19 in Indonesia. During patient’s TB course, COVID-19 can occur at any time with worse consequences for the patients who are affected by active pulmonary disease.
Metabolic profiling and antibacterial activity of Eryngium pristis Cham. & Schltdl. - prospecting for its use in the treatment of bacterial infections
Authors: Laura Silva Fernandes , Ygor Ferreira Garcia da Costa , Martha Eunice de Bessa , Adriana Lucia Pires Ferreira , José Otávio do Amaral Corrêa , Glauciemar Del-Vechio Vieira , Orlando Vieira de Sousa , Ana Lúcia Santos de Matos Araújo , Paula C Castilho , Maria Silvana Alves
Published: November 2021

Morbidity and mortality of the infected patients by multidrug-resistant bacteria have increased, emphasizing the urgency of fight for the discovery of new innovative antibiotics. In this sense, natural products emerge as valuable sources of bioactive compounds. Among the biodiversity, Eryngium pristis Cham. & Schltdl. (Apiaceae Lindl.) is traditionally used to treat thrush and ulcers of throat and mouth, as diuretic and emmenagogue, but scarcely known as an antimicrobial agent. With this context in mind, the goals of this study were to investigate the metabolic profile and the antibacterial activity of ethanolic extract (EE-Ep) and hexane (HF-Ep), dichloromethane (DF-Ep), ethyl acetate (EAF-Ep) and butanol (BF-Ep) fractions from E. pristis leaves. Gas Chromatography-Mass Spectrometry (GC-MS) was performed to stablish the metabolic profile and revealed the presence of 12 and 14 compounds in EAF-Ep and HF-Ep, respectively. β-selinene, spathulenol, globulol, 2-methoxy-4-vinylphenol, α-amyrin, β-amyrin, and lupeol derivative were some of phytochemicals identified. The antibacterial activity was determined by Minimal Inhibitory Concentration (MIC) using the broth micro-dilution against eight ATCC® and five methicillin-resistant Staphylococcus aureus (MRSA) clinical strains. HF-Ep was the most effective (MIC ≤ 5,000 µg/µL), being active against the largest part of tested Gram-positive and Gram-negative bacterial strains, including MRSA, with exception of Escherichia coli (ATCC 25922) and Pseudomonas aeruginosa (ATCC 9027) and (ATCC 27853). These results suggest that E. pristis is a natural source of bioactive compounds for the search of new antibiotics which can be an interesting therapeutic approach to recover patients mainly infected by MRSA strains.
Design and Evaluation of Polygonal Trough Solar Concentrator
Authors: Khudair Yasser Yassin , Hasan Alaa Badr
Published: November 2021

In this paper, a solar concentrator is designed in the form of a concave half-cylindrical mirror consisting of polygonal reflective surface plates. The plates are arranged to give a hemispherical shape to the design. These surfaces work to receive solar radiation and focusing by reflecting it to the receiver that is placed in front of the reflecting surfaces. The results are compared with a system consisting of a concave reflecting surface of the same dimensions to obtain a good criterion for evaluating the design performance. The results showed a low acceptance angle for the design for all the samples used due to the geometrical design nature. The optical efficiency affected by the angle of incidence greatly by all the samples used, which differ in the concentration ratio, width and location of the receiver.
An Estimation of Survival and Hazard Rate Functions of Exponential Rayleigh Distribution
Authors: Hussein Lamyaa Khalid , Hussein Iden Hasan , Rasheed Huda Abdulla
Published: November 2021

In this paper, we used the maximum likelihood estimation method to find the estimation values â€‹â€‹for survival and hazard rate functions of the Exponential Rayleigh distribution based on a sample of the real data for lung cancer and stomach cancer obtained from the Iraqi Ministry of Health and Environment, Department of Medical City, Tumor Teaching Hospital, depending on patients' diagnosis records and number of days the patient remains in the hospital until his death.
Diseases of the urinarysystem of cows : 1. Clinical examination and urine analysis
Authors: S.. Al - Sammarrae S. A.G , AI – Azawi W. S.T.
Published: November 2021

To study the diseases of the urinary system in cows, clinical examination including rectal palpation and urine samples from (697) cows were done in some farms, hospitals and two cattle stations (AI – Latifia and Al-Dijala) during the period July 1993 to April 1994. Clinical examination and rectal paplation of all cows in Al - Dijala station showed obvious clinical signs which indicat abnormalities in the urinary system . These include changes in the size of the kidneys with the presence or absence of lobulation . The ureter was palpable in some of these cows because of it's enlargement and the bladder showed thickening of the wall. However all cows in the control group ( farms , hospitals & Ai - Latifia ) were free from any signs of urinary disturbances. The color of the urine in Al – Dijala was milky to cloudy red, and all samples were charcterized by small of ammonia. The specific gravity was low, and the urine pH was higher than normal , also all samles showed positive results for protein examination and only four cows showed positive results for benzidine test. The physical and chemical properties of the urine samples collected from control and Al - Latifia station cows were within the normal values. Examination of urine Sediment showed clear increase in the number of epithelial cells , pus cells and blood cells beside the presence of casts and bacteria in Al – Dijala station. The study concluded the close relationship between diseases of urinary and reprodective systems : Urinary system infection in Al - Dijala station cows were 100% because of a suspected out break of infectious pustule valvovaginitis which occur during the period of study, however the urine culture of Al - Latifia revealed the presence of 51 cows (19.69%) bacterial isolates.
Study on the pathology and parasitic affection of liver in sheep and cattle at Mosul area
Authors: Al-Sultan I. I. , O. Youkhana, S. , M. Mahran, O.
Published: November 2021

A sample of (700) seven hundred out of (3000) three thousand randomly collected livers of sheep and cattle from Mosul abattoir during a biweekly visits of six months period , has been subjected to both grads and histopathological examinations. 

Results indicated that parasites induced the highest percen tages of tissue changes in the livers of cattle and sheep, the parasites responsible were Hydatid Cysts and Fasciola gigantica which indicated that Mosul and surrounding areas were endemic with these parasites. Typical cases of liver cirrhosis were recognized in cattle and less in sheep. Mixed infection of mentioned parasites with liver abcesses and hepatic necrosis were diagnosed more frequ ently in sheep than in cattle, a diffuse form of lesbons was round in cattle while the focal from was encountered in sheep. 

Congestion and degenerative changes like fatty livers were not seen in cattle but formed a respective percentage (1%) and (1.1%) in sheep. Other conditions were identified like icteric livers , than percentages were and low closely relatd in both species of animals.
Study of the blood supply of the brain in sheep
Authors: Kadhum Khalid Kamil
Published: November 2021

The brain of the sheep receives its blood supply through the carotid rete and the basilar artery. The carotid rete formed of contribution of internal carotid artery and branches from maxillary artery. The internal carotid artery courses on the ventral surface of the cerebal crus to give the rostral cerebal artery and the caudal communicating artery . Thus , arteries excepted the middle cerebal artery forming with the same arteries of the opposite side , the cerebal arterial circle or circle of Willis. The internal caroted artery also gives off hypophysialartery to the 

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hypophysis. The caudal communicating artery give off the caudal cerebal artery and the rostral cerebellar artery and unite with the corresponding artery of the opposite side to form the basilar artery rostral to the pone . The basilar artery gives off the pontine artery , caudal cerebellar artery and the medullary branch.
Field investigation on Hypomagnesaemic and Hypocuprosis in Cattle in Baghdad Provience
Authors: .S. Dr. Al-Juburii , K.O
Published: November 2021

This field investigation has been coducted on 5l animals from different areas in baghdad provience . Their ages ranged from 10days to 7years. They were devided into two groups . Group 1 consisted of 26 animals showed signs of hypomagnesaemia and hypocuporosis · The result indicated asignificance decrease in magnesium level (p <0.01 ) which asgnificance decrese in magnesium and cuppor levels (p <0.01) which were less than 1.6 mg/100 ml respectivly especially in calves ranged 2-4 months of age. 

The result of group 2 which consisted of 25 animals (control) indicated that the percentage of magnesium and cupper were within normal range.
Ageing process and policosanol effects
Authors: José Illnait-Ferrer  , Julio César Fernández-Travieso  , Yenney Reyes-Nuñez  , Alicia de la Caridad Duquesne-Chávez
Published: November 2021

The fundamental concepts of the aging process are exposed: Its dimension as a health problem, aspects related to its repercussion from the social point of view, and Its influence on aspects that can affect the normal development of contemporary society. The roles of genetics, cellular and biochemical processes that concur in the development of aging is analyzed, making special reference to the role of Adenosine Mono Phosphate Kinase [AMPK]. activation in the regulation of the aging process and the participation of mechanisms for its activation. It is concluded that Policosanol is a medicament of natural origin that could be proposed as candidate to be used for a healthy aging, based on the results of various investigations in experimental models and data obtained from different clinical trials.
Argentine Curriculum in Covid-19 Pandemic
Authors: Ferdianto Ferry , Junaedi Iwan , Mulyono Mulyono
Published: November 2021

Corona virus disease 2019 (Covid-19) began to spread in Argentina in March 2020, based on data until August 25, 2020, in Argentina there were more than 350,000 people infected with the corona virus -19, ranked in the top 15 countries with the most cases. The purpose of this paper is to prepare curriculum development in Argentina in the face of the COVID-19 pandemic. The research method used is literature study, collecting information and data through various literatures, books, journals, Argentine government regulations, relevant previous research results. as well as other references. The analysis carried out is the process of preparing the curriculum in Argentina in the face of the covid-19 pandemic with the Saylor curriculum formulation model, which consists of curriculum planning, curriculum implementation, and curriculum evaluation. The Argentine government has issued several regulations and curricula in dealing with the COVID-19 pandemic. CFE Resolution No. 362/2020 decree governing the Distance Education Protocol, with Resolution N° 423/2020 the Ministry of Education of the Nation established the “Advisory Council on Current Return to Classroom Planning”. In the Saylor, Alexander and Lewis model, curriculum changes are implemented in three stages, namely; the curriculum design stage, the curriculum implementation stage, and the curriculum evaluation stage, curriculum changes are made to ensure that citizens continue to receive education.
Cretaceous Geology, Age-Differences and Economic Geology of Gidan Alfarma Environ, Northwestern Nigeria
Authors: I. A. Kankara , A. Yunusa , A. Yunusa
Published: November 2021

In this present study, the geology and economic aspect of lithological units of Sokoto Basin, sheet 4 South West Sokoto, part of Nigerian Sedimentary Basins were studied. It is bounded by latitudes N 13° 36' 30"- N 13° 40' 45" and longitudes E 05° 38' 00"- E 05° 40' 44"to gently undulating plain which was mapped on the scale of 1:25,000. The methodology adopted was mainly primary data which involved reconnaissance survey and actual or full field survey. The economic deposits include clays/ shale, lateritic ironstones, limestone, phosphate and gypsum, which are mined by the local artisanal miners.
Emerging Aspects of Artificial Intelligence for Smart Life
Authors: A Kavitha
Published: November 2021

Nowadays Artificial intelligence makes our life easy and comfortable that is hard to imagine that to survive our life without AI technology. We all know that Artificial Intelligence (AI) is a precious gift to human being. Recently it is used in robotics, education, agriculture, computer vision, cyber security, face recognition, speech recognition, self driving cars, medical image processing, biometrics, bioinformatics, satellite control, disease detection, drugs development, network developments, manufacturing, business, healthcare and medicine. In the digital era AI provides the best results in all most all the domains. This article helps to understand the emerging aspects of AI in various fields.
THERMODIFFUSION SATURATION OF THE SURFACE LAYERS OF α-TITANIUM BY OXYGEN, NITROGEN, CARBON
Authors: TRUSH V.S. , POHRELIUK І. М. , FEDIRKO V.M.
Published: November 2021

The purpose of the study is to analytically assess the depth of the gas-saturated zone in the case of a single-component diffusion saturation of alpha-titanium with nitrogen, oxygen and carbon from a rarefied controlled gas environment. Results. Based on the analysis of the literature data, the work schematically shows the interaction of alpha titanium with the elements of implementation and presents the processes with the corresponding parameters that characterize. It is shown that the surface impurity concentration is equal to the equilibrium concentration and is established instantly and does not depend on time. Consequently, with the proposed generalized nonstationary boundary condition in the absence of diffusion of impurities into the volume of the metal, the time dependence of its surface concentration is given, determined by the intensity of surface processes. The dependence of the relative change in the microhardness in the diffusion zone of titanium due to dissolved nitrogen (without taking into account the contribution of nitride inclusions) is presented. Analytically calculated concentration profiles of nitrogen generally correlate well with the distribution of the corresponding relative changes in microhardness in the surface layer. Analytical calculations of the concentration profiles of oxygen, nitrogen and carbon in titanium at a saturation temperature of 700 °C are presented. Practical value. The results obtained will make it possible to preliminarily estimate the size of the fortified near-surface layer depending on the parameters of chemical-thermal treatment and select the optimal parameters of thermal diffusion treatment to ensure the formation of reinforced layers on products made of alpha-titanium based on elements of interstitial in order to increase the functional properties.
SMOOTH AND REDUCED OIL AND GAS PIPES WITH INCREASED CORROSION RESISTANCE
Authors: BOLSHAKOV V.I. , DERHACH Т. О. , SUKHOMLYN D.A.
Published: November 2021

Formulation of the problem. Corrosion of pipes used in the oil and gas industry leads to significant economic losses, therefore, increasing their corrosion resistance and durability is an urgent task. Purpose: generalization of results of developments of technologies of manufacturing and research of qualitative characteristics of oil and gas pipelines (smooth) and pump-compressor (threaded) pipes of the increased and high corrosion resistance and giving recommendations on their application in oil and gas industry in environments of various corrosion aggressiveness. Methodology. The microstructure of tubular steels and protective coatings was studied by light metallography and electron microscopy. Complex corrosion studies included laboratory tests of samples in model chloride and hydrogen sulfide-containing media, the resistance to sulfide corrosion cracking under stress (SCCS) and hydrogen cracking (НС) according to the methods of NACE TM 0177 and NACE TM 0284 as well as operational tests at the oil fields of Ukraine. Mechanical properties for stretching and impact bending of samples by standard methods. Results. The results of the development of production technologies and the study of the qualitative characteristics of oil and gas pipelines and tubing with increased and high corrosion resistance in aggressive oil and gas production environments are summarized. The influence of the chemical composition of steels and protective coatings, as well as pipe manufacturing technologies on their microstructure, corrosion resistance in various media, and mechanical properties is shown. Scientific novelty. For the first time, the presence of special low-energy boundaries in the ferrite of low-alloy ferrite-pearlite and high-alloy ferritic-austenitic steels was established, their number and energy level were estimated. The high operational reliability of threaded pipes with a protective coating is substantiated. Practical value. The results of the work and recommendations for the rational use of oil and gas pipes with increased corrosion resistance can be used to increase the economic efficiency of production in the oil and gas industry.
Mathematical model of forecast of strength of low carbon steel
Authors: Kotenko D.S.
Published: November 2021

Introduction. The use of different mathematical approaches to assessing and forecasting the quality characteristics of materials for different purposes is always relevant. The urgency of solving problems and problems of modern materials science with the use of methods of mathematical modeling allows to optimize technological processes of production, to determine in a short period of time the set parameters with minimal time and material costs. In the work using the method of regression analysis, the strength criteria of low-carbon low-alloy steel depending on the characteristics of the structure were evaluated. Materials and methods. Samples of Ст3пс steel grade made of a circle with a diameter of 24 mm were selected as the material for the study. The structure and mechanical properties were investigated at three reference points: at a distance of 0 mm from the center of the sample, 6 mm from the center of the sample and 12 mm from the center of the sample. The steel was investigated in the state of factory delivery, and after two modes of heat treatment to obtain ferritic-perlite and bainite structure. The following properties were determined: microhardness, tensile strength and yield strength, hardness and toughness at room temperature. The results of the experiment. Models for estimating mechanical properties were obtained using regression analysis. Models describing the relationship between the microhardness of pearlite and its area (R2 = 0.8366) in the state of factory delivery have a relatively high correlation coefficient; the score and the ultimate strength (R2 = 1.0) and yield strength (R2 = 0.8669) of steel after cooling in an oil medium; hardness and area of pearlite after hardening steel in the pearlite region (R2 = 0.7215). Conclusions. The practical significance of the work performed is the ability to perform a rapid analysis of the properties of rolled metal from steel Ст3пс based on determining the area of the structural elements and their scoring. However, it should be noted that the existing discrepancy between the results of the experiment and the forecast using the obtained models may be due to the influence of other factors. Such factors include the influence of chemical composition, incompleteness of formal axiomatics, which occurs when estimating the geometry of complex structural elements.

Keywords: low-alloy steel; structure; chemical composition; mechanical properties; regression model; properties forecast
Defects of the hardened layer at laser exposure
Authors: Gubenko S.I. , Parusov E.V. , Parusov O.V.
Published: November 2021

Purpose. It is necessary to investigate the influence of non-metallic inclusions on the formation of defects during laser processing. The aim of the work was to study the defects of the hardened layer of steels under laser action, associated with the presence of non-metallic inclusions. Methods. The materials for investigation were commercial steels containing different non-metallic inclusions. The specimens of different steels with preliminary polished surface were exposed to laser beaming on the installations GOS-30M and GUANTUM-16. The research methods were applied - petrography, X-ray microscopy (MS-46 Cameca) and optical microscopy (Neophot-21) to study defects and identify of inclusions. Results. It has been established that various types of defects appear on the surface and in the surface layer of steel under laser action, which are not connected and are associated with non-metallic inclusions. It is shown that non-metallic inclusions are the reason for the appearance of various kinds of defects in the hardened layer of steel products during laser processing (cracks, cavities, violation of the geometry of the hardened layer). The reasons for the appearance of defects associated with the presence of inclusions of various types are discussed. Scientific novelty. A classification of defects in the hardened layer is presented. The nature and features of the formation of defects, associated with the appearance of high-speed thermal stresses, structural inhomogeneity, as well as melting, thermal destruction and evaporation of inclusions emerging to the surface and located within the hardened layer, have been established. It is noted that the detected defects are ready-made centers of destruction of a steel product or part under conditions of static and dynamic loads, as well as contact stresses. Practical significance.  It is shown that the unsatisfactory quality of the hardened layer associated with the presence of various kinds of defects near nonmetallic inclusions contributes to a decrease in the mechanical and operational characteristics of a steel product. The use of the obtained results will make it possible to develop technologies for laser processing of steels with regulated quality parameters of the hardened layer, which will prevent the formation of various kinds of defects.

Keywords: steel; laser treatment; defects; cracks; hardened layer; non-metallic inclusions
Penerapan Data Mining Klasifikasi Tingkat Pemahaman Siswa Pada Pelajaran Matematika
Authors: Novika Tri , Poningsih Poningsih , Okprana Harly , Windarto Agus Perdana , Siahaan Hasudungan
Published: November 2021

The purpose of the research is to classify the concept of understanding students in Mathematics lessons. In the learning process teaching students understanding learning materials is very important. The attainment of student understanding is a function of the being of an educator. Many formulas and concepts to understand make it difficult for students to solve math problems. The data source was obtained from the results of a math comprehension questionnaire of eighth graders at Tamansiswa Tapian Dolok Private Junior High School. The classification method used is the C4.5 Algorithm and assisted with RapidMiner software. Attributes used are student interests, how students learn, student motivation, how to teach teachers, learning media, and infrastructure facilities. The results of the calculation of entropy values and attribute gains obtained 15 rules of mathematical comprehension decisions with 9 rules of understanding status and 6 rules of inconsistency status. Classification modeling with C4.5 Algorithm on RapidMiner obtained 96.00% accuracy Classification with C4.5 Algorithm can be applied and provide new information about the classification of student comprehension concepts in math lessons
Topic Modelling pada Sentimen Terhadap Headline Berita Online Berbahasa Indonesia Menggunakan LDA dan LSTM
Authors: Naury Chairullah , Fudholi Dhomas Hatta , Hidayatullah Ahmad Fathan
Published: November 2021

The online mass media is the source of the fastest and up-to-date information. A model that can provide mapping will help in sorting out information more precisely. In this study, the authors applied topic modeling to the results of sentiment analysis on online news headlines in Indonesian. Sources of data in this study were obtained from online mass media in Indonesian. The data collected were analyzed for sentiment using the Long Short-term Memory (LSTM) method, in order to obtain news headlines with positive, negative, and neutral sentiments. The classification obtained from the results of the sentiment analysis process is continued with the topic modeling process using the Latent Dirichlet Allocation (LDA) method and visualized in the form of wordcloud and intertopic distance map (pyLDAVis) to determine the relationship between one topic and another. The result of sentiment analysis is a model with 71.13% of accuracy level and the results of topic modeling are in the form of some topics that are easy to interpret.
Evaluasi Tingkat Kematangan e-Government Pada Partisipasi Masyarakat dan Pelayanan Publik Menerapkan Framework Gartner
Authors: Akbar Muhammad Miftahul , Winarno Wing Wahyu , Haryono Kholid
Published: November 2021

E-government as part of internet products has become a topic of discussion in internet and mass media discussions and is popular after being linked to the regional autonomy policy of districts / cities in Indonesia. However, there are still many government information systems that are developed and implemented that do not function optimally at both the regional and central government levels. Measuring the level of E-government maturity is needed to determine the extent to which the successful application of E-government is. The purpose of the E-government maturity assessment is to provide basic data, advanced data, and all that is necessary for the development of an E-government strategy. Gartner is one of the models used to measure the maturity level of e-government. Gartner's model suggests four critical phases of the evolution of e-government, namely: web presence, interaction, transactions, and transformation. The gartner model is used to measure the maturity level in Sukoharjo district. The research methodology used a questionnaire and the calculation used the average score for each dimension. To determine the relationship between dimensions and criteria, the PLS (Partial Least Square) method is used. Research has proven that the maturity level of E-government is 4.06 (predictable process). The dimensions of transformation and usability affect community participation using e-government in Sukoharjo district.
Integrasi SMOTE pada Naive Bayes dan Logistic Regression Berbasis Particle Swarm Optimization untuk Prediksi Cacat Perangkat Lunak
Authors: Hardoni Andre , Rini Dian Palupi , Sukemi Sukemi
Published: November 2021

Software defects are one of the main contributors to information technology waste and lead to rework, thus consuming a lot of time and money. Software defect prediction has the objective of defect prevention by classifying certain modules as defective or not defective. Many researchers have conducted research in the field of software defect prediction using NASA MDP public datasets, but these datasets still have shortcomings such as class imbalance and noise attribute. The class imbalance problem can be overcome by utilizing SMOTE (Synthetic Minority Over-sampling Technique) and the noise attribute problem can be solved by selecting features using Particle Swarm Optimization (PSO), So in this research, the integration between SMOTE and PSO is applied to the classification technique machine learning naïve Bayes and logistic regression. From the results of experiments that have been carried out on 8 NASA MDP datasets by dividing the dataset into training and testing data, it is found that the SMOTE + PSO integration in each classification technique can improve classification performance with the highest AUC (Area Under Curve) value on average 0,89 on logistic regression and 0,86 in naïve Bayes in the training and at the same time better than without combining the two.
Analisa dan Implementasi Sistem Keamanan Router Mikrotik dari Serangan Winbox Exploitation, Brute-Force, DoS
Authors: Haeruddin Haeruddin
Published: November 2021

The advancement of technology development makes it easier to find and share any information using computer networks. Computer networks have been widely applied in homes and offices. The ease of exchanging data on the network makes the availability of computer networks and information security are vulnerable to attacks by threats. On a computer network, the device which has the vulnerability is a router. A router is the outermost device that connects the Local Area Network (LAN) to the internet so that it can be easily attacked by irresponsible parties. The Mikrotik router is a product that is widely used as a gateway router that connects LANs and the Internet. There are so many tools that can be used to carry out attacks on Mikrotik routers such as Hping3 (DoS), Hydra (Brute-Force), and Exploitation Script (Winbox Exploitation). To find out the security loop in Mikrotik routers, this study uses penetration testing methods and attack techniques such as Winbox Exploit, Brute-force, and DoS. After knowing the security gap, the next step is to provide and implementation recommendations so that similar attacks do not occur any more in the future.
Fuzzy Neural Network (FNN) Pada Proses Identifikasi Penyakit ISPA
Authors: Saputra Dhio , Yanto Musli , Safitri Wifra , Mayola Liga
Published: November 2021

ISPA is a disease that can affect anyone from children, adolescents, adults, and even the elderly. The causes experienced by sufferers of this disease are quite simple, such as fever, runny nose, and cough. The discussion in this paper describes the process of ISPA disease identification by developing a Fuzzy Neural Network (FNN) model. The process will be optimized using Fuzzy Logic to form rules for the diagnostic process, then proceed with an Artificial Neural Network (ANN). This model can maximize the performance of ANN in the identification process so that the output given is quite precise and accurate. The results provided by Fuzzy Logic can describe the clarity of the rules in diagnosis by presenting several rules (rules) that are presented from the Fuzzyfication process to the Defuzzyfication process. The output obtained from the ANN process also shows quite perfect results with an average error value based on MSE of 0.00912 and accuracy value of 91.96%. With these results, it can be stated that the FNN model can be used in the ISPA diagnosis process so that the presentation of this paper aims to provide an alternative in the identification process
Implementasi K-Nearest Neighbor Dalam Prediksi Mahasiswa Berhenti Kuliah
Authors: Yunita Yunita
Published: November 2021

A student is a student who sits and is registered in one of the universities, both public and private, being a student is the dream of many students around the world and being a student is the starting gate to determine someone will be in the world of science in what field, be it computer science, medicine, world of education and others. However, there are many reasons why students decide to stop attending lectures suddenly due to several factors, both external and internal factors. This causes its own losses that will be faced by the campus, one of which is the reduction in the quantity of student data and resulting in data accumulation, it is necessary to predict students who have the potential to stop studying unilaterally by looking at several criteria and digging up information on the data of students who have the potential to quit college by applying the K-algorithm. NN. In this study, the K-NN algorithm records old data and sees similarities to new data in an effort to recognize patterns of students dropping out of college, the results obtained from new lecture data show that the data is similar to the old data of students who dropped out of college with the closest similarity of values from other cases, namely 17 .3815 with 19.98875 so that the results obtained by the new data student decision decided the possibility of dropping out of college