bluuebunny/crossref_metadata_2025 huggingface dataset:
Change Point Detection Methods for Locating Activations in Functional Neuronal Images
Authors: CANDEMİR Cemre , OĞUZ Kaya
Published: June 2022

The most common analysis for fMRI images is activation detection, in which the purpose is to find the locations in the brain that respond to specific functions, such as visual processing or motor functions by providing related stimuli as tasks in the experiment. On the other hand, it is also important to detect the instance the activation is triggered. One of the powerful techniques that can analyze the abnormal behavior of any data is change point (CP) analysis. We suggest that CP detection algorithms also can be used to locate the activations in functional magnetic resonance imaging (fMRI) sequences, as well. Our paper presents a two-fold innovative study in that respect. First, we propose to use CP detection algorithms to locate the activations in fMRI signals as a state-of-art topic. Furthermore, we propose and compare a set of change point analysis methods, a regression-based method (RBM), a statistical method (SM), and a mean difference of double sliding windows method (MDSW)) to locate such points. Second, we apply these methods to the fMRI signals, which are acquired from the real subjects, while they were performing fMRI tasks. Proposed methods were applied to three different fMRI experiments with a motor task, a visual task, and a linguistic task. The analysis shows that the methods find activations in accordance with established methods such as statistical parametric maps (SPM). The acquired up to 94 % results also show that the proposed methods can be used effectively to locate the activation times on fMRI time series.
Zebra Midye (Dreissena polymorpha)'de Malathionun Akut Toksisitesi (LC50)’nin Belirlenmesi
Authors: AKÇANAL ÖDÜN Neşe , SERDAR Osman
Published: June 2022

Sunulan çalışmada, zebra midye (Dreissena polymorpha) bireyleri, LC50 değerlerinin belirlenmesi için, konsantrasyon düzeyleri farklı olan, malathion etken maddesini içeren pestisitin bu organizma üzerindeki akut toksik etkisi araştırılmıştır. Bu amaçla aralık belirleme ve deneysel tasarım kurgulanmıştır. Tüm deneyler (aralık belirleme dahil) 2 litre hacimli cam akvaryumlar içerisine 1 litre su katılmıştır. Her akvaryum içerisine, 10’ar adet D. polymorpha bireyi eklenerek, deneme çalışması hazırlanmıştır. LC50 değerinin belirlenmesi için Gözlem periyodu olarak, 24 saatlik zaman dilimindeki D. Polymorpha bireylerinin canlılık durumları incelenerek kayıt altına alınmıştır. Canlılık özelliğini yitiren D. polymorpha bireyleri deneme ortamından çıkarılmıştır. Bu şekilde 3 tekrarlı olarak yürütülen çalışmada, malathion etken maddeli pestisitin D. polymorpha için LC50 değeri 120,11 ± 19,32 mg/l olarak belirlenmiştir.

Anahtar Kelimeler: Malathion, Pestisit, Letal Konsantrasyon, Zebra Midye.
Presencia de Corythucha ciliata (Say, 1832) y Corythucha arcuata (Say, 1832) (Hemiptera: Tingidae) en Argentina, ampliación de la distribución de C. ciliata en Chile e inclusión de una nueva sinonimia específica
Authors: Carpintero Diego L. , De Magistris Alberto A. , Faúndez Eduardo I. , Porrini Darío P.
Published: June 2022

Se cita por primera vez para la Argentina a Corythucha ciliata (Say) (Hemiptera: Heteroptera: Tingidae), que se alimenta primariamente del plátano o sicómoro (Platanus x hispanica Mill. ex Münchh), así como también se extiende su distribución en Chile. Adicionalmente, se registra por primera vez en territorio argentino a Corythucha arcuata (Say), que se alimenta del roble común (Quercus robur L.), y se establece su conespecificidad con Corythucha bonaerensis Montemayor nov. sin. Se dan también nuevos registros distribucionales y de planta hospedante para Corythucha argentinensis Monte, y se discute la taxonomía de las especies argentinas del género. Se proveen imágenes de ejemplares recolectados y se dan sus caracteres diagnósticos. Se comenta brevemente la importancia de la aparición de estas especies en el país.
New parasitoid associations and geographical range extensions of Sceliphron Klug, 1801 (Hymenoptera: Sphecidae) in Brazil
Authors: Pádua Diego G. , Fernandes Daniell R.R. , Somavilla Alexandre , Oliveira Marcio L.
Published: June 2022

We record for the first time the Darwin wasp species Photocryptus nigrosignatus (Kriechbaumer, 1901) parasitizing nests of the solitary wasp Sceliphron fistularium (Dahlbom, 1843) in the Amazonas state, Brazil, and provide new distribution records for them and S. asiaticum (Linnaeus, 1758), the other species registered to Brazil. Additionally, we also report the emergence of solitary wasp Pachodynerus nasidens Latreille, 1817 (Vespidae), and parasitoid wasps Leucospis sp. (Leucospidae) and Photocryptus sp. in S. fistularium nests.
Los condicionantes domésticos y sistémicos en la relación entre India y Venezuela en el siglo XXI
Authors: Dussort María Noel
Published: June 2022

El siglo XXI plantea un escenario donde las cuestiones energéticas han comenzado a estar cada vez más vinculadas a grandes potencias asiáticas. Simultáneamente, los principales exportadores de petróleo latinoamericanos han disminuido de forma paulatina las ventas petroleras a Estados Unidos, diversificándolas hacia nuevos destinos tales como China e India.Frente a un contexto que conjuga, por un lado, a India como un país altamente dependiente del petróleo foráneo para alcanzar su seguridad energética, y por otro lado, a los principales países productores de este recurso de América Latina aumentando sus ventas a las potencias asiáticas como India, cabe preguntarnos ¿cuáles son los condicionantes domésticos y sistémicos en materia energética que convirtieron a Venezuela en un actor clave para India en el nuevo siglo? A su vez, y como parte de la pregunta anterior ¿de qué forma el accionar de Estados Unidos condiciona las relaciones India-Venezuela? Sobre dichosinterrogantes, el objetivo de este trabajo es analizar los condicionantes domésticos y sistémicos que condujeron a que Venezuela se convirtiera en el tercer mayor proveedor de petróleo de India del mundo en la segunda década del siglo XXI, para rápidamente pasar a una situación marginal.
Guerra en Ucrania: pasado, presente y futuro del peor conflicto militar en Europa desde 1945
Authors: Torres Ricardo
Published: June 2022

Ucrania, con más de 43,5 millones de habitantes (estimación del 2022) y 603.550 Km2 (dentro de sus fronteras internacionalmente reconocidas), es el segundo país más grande de Europa después de Rusia, si se excluye a Dinamarca con Groenlandia y a Francia con sus departamentos de ultramar que forman parte de la República Francesa.Para entender el actual conflicto amerita recurrir brevemente a la historia.
Problematizando el Estado desde los sujetos de la agricultura familiar. Un estudio exploratorio desde una mirada político-antropológica.
Authors: Nogueira María Elena , Urcola Marcos Andrés
Published: June 2022

En este trabajo nos interesa abordar el siguiente interrogante, ¿qué es el Estado para los agricultores familiares?”, es decir, cómo estos sujetos perciben al Estado a través de sus prácticas. Es habitual abordar la cuestión estatal desde su carácter institucional como aparato, a partir de sus acciones y políticas públicas en términos globales. En este caso, lo haremos desde una mirada distinta pero complementaria, en la que tendrá un papel fundamental lo cotidiano del encuentro entre el Estado y los sujetos de la agricultura familiar. El objetivo de este escrito es ofrecer respuestas posibles desde una mirada antropológica del Estado que ponga en discusión, desde los sujetos, este complejo institucional, su presencia y funciones. La perspectiva de análisis será cualitativa, apelando a documentos escritos y testimonios orales a través de entrevistas en profundidad. Debe destacarse que se trata de un trabajo exploratorio con el que pretendemos seguir problematizando cuestiones vinculadas con el desarrollo rural, las políticas públicas y la agricultura familiar en Argentina.
Perancangan Media Interaktif Algoritma dan Pemrograman Berbasis Android
Authors: Rizkhayani Futry , Ahmadian Hendri , Basrul Basrul
Published: June 2022

Penelitian ini dilakukan untuk merancang media interaktif mata kuliah Algoritma & Pemrograman berbasis Android  dengan metode pengembangan ADDIE. Sampel yang digunakan adalah mahasiswa PTI UIN Ar-Raniry yang mengambil mata kuliah Algoritma dan Pemrograman pada semester genap 2019/2020. Hasil yang diperole dalam penelitian ini sudah melalui uji kelayakannya oleh ahli media dengan nilai rata-rata 4,28 dan presentase kualitas mencapai 85% maka dikategorikan dengan “sangat layak”. Namun hasil pengujian oleh ahli materi memperoleh nilai rata-rata 4,5 dengan presentase kualitas mencapai 90% dikategorikan dengan sangat layak. Hasil uji kelayakan yang dilakukan pada mahasiswa adalah 80,4% dan hasil tersebut dapat dikategori “Layak”. Sehingga dapat disimpulkan bahwa media pembelajaran ini layak untuk dipakai.Penelitian ini dilakukan untuk merancang media interaktif mata kuliah Algoritma & Pemrograman berbasis Android  dengan metode pengembangan ADDIE. Sampel yang digunakan adalah mahasiswa PTI UIN Ar-Raniry yang mengambil mata kuliah Algoritma dan Pemrograman pada semester genap 2019/2020. Hasil yang diperole dalam penelitian ini sudah melalui uji kelayakannya oleh ahli media dengan nilai rata-rata 4,28 dan presentase kualitas mencapai 85% maka dikategorikan dengan “sangat layak”. Namun hasil pengujian oleh ahli materi memperoleh nilai rata-rata 4,5 dengan presentase kualitas mencapai 90% dikategorikan dengan sangat layak. Hasil uji kelayakan yang dilakukan pada mahasiswa adalah 80,4% dan hasil tersebut dapat dikategori “Layak”. Sehingga dapat disimpulkan bahwa media pembelajaran ini layak untuk dipakai.
Identifikasi dan Klasifikasi Penyakit Daun Jagung Menggunakan Support Vector Machine
Authors: Suhendra Rivansyah , Juliwardi Ilham , Sanusi Sanusi
Published: June 2022

Tanaman jagung rentan terhadap serangan penyakit dimana penyakit ini dapat diketahui dari bercak yang terdapat pada daun. Penyakit daun tersebut dapat mengakibatkan turunnya kualitas dan kuantitas hasil panen. Tantangan utama dalam deteksi dini penyakit daun jagung secara manual yaitu ada banyak daun yang harus diidentifikasi dan terdapat perbedaan presepsi terhadap warna pada mata manusia berdasarkan kondisi visualnya.Tujuan dari penelitian ini adalah untuk melakukan deteksi dini dan klasifikasi penyakit daun jagung. Klasifikasi dilakukan melalui pendekatan metode Support Vector Machine (SVM) dengan memanfaatkan fitur warna dan fitur tekstur. Jumlah fitur yang digunakan yaitu 22 fitur yang terdiri dari 18 fitur warna dan 4 fitur tekstur. Data latih yang digunakan yaitu data sekunder yang diambil dari PlantVillage-Dataset dengan jumlah data sebanyak 3600 data. Eksperimen dilakukan dengan beberapa variasi fitur seperti hanya fitur warna, hanya fitur tekstur dan fitur gabungan warna dan tekstur dengan pembagian data 80:20, 70:30 dan 60:40. Pada setiap variasi fitur dan pembagian data lalu dihitung parameter evaluasi model. Hasil pengujian menunjukkan akurasi optimum sebesar 99,5% dengan fitur gabungan warna & tekstur
Evaluasi Risiko Resistensi Insulin Akibat Simvastatin, Rosuvastatin dan Fenofibrat pada Tikus Betina (Rattus novergicus L.) Dislipidemia yang Diinduksi Kontrasepsi Oral dan Diet Tinggi Lemak
Authors: Hadijah Sitti , Djabir Yulia Yusrini , Nainu Firzan
Published: June 2022

Penelitian ini bertujuan untuk membandingkan pengaruh pemberian obat simvastatin, rosuvastatin dan fenofibrat terhadap kadar glukosa, insulin darah puasa dan nilai HOMA-IR terhadap tikus betina dislipidemia yang diinduksi kontrasepsi oral dan pakan lemak. Penelitian menggunakan 30 ekor tikus betina yang dibagi menjadi 6 kelompok perlakuan. Kelompok satu diberi pil kontrasepsi (PK) (1,5µg levonorgestrel, 0,3µg estradiol), kelompok dua diberi diet lemak (DL) (kuning telur 2ml/200gBB), kelompok tiga diberi PK+DL, kelompok empat diberi PK+DL dan terapi simvastatin (0,21 mg/kgBB), kelompok lima diberi PK+DL dan terapi rosuvastatin (0,5 mg/kgBB), serta kelompok enam diberi PK+DL dan terapi fenofibrat (8,2 mg/kgBB). Perlakuan PK dan DL berlangsung selama 60 hari, dimana terapi diberikan mulai hari ke-30 hingga ke-60. Hasil yang diperoleh menunjukkan pemberian masing-masing PK dan DL dapat meningkatkan GDP setelah 30 hari, walaupun tidak mencapai nilai signifikan. Terapi simvastatin dan rosuvastatin dan fenofibrat selama 30 hari terakhir (hari ke-30-60) dapat menurunkan kadar glukosa darah puasa (GDP) sebesar 28,17%, 45,08% dan 46,12%, namun hanya simvastatin dan rosuvastatin yang mencapai nilai signifikan. (p<0,05) Penurunan kadar insulin darah puasa paling besar pada pemberian rosuvastatin (20,64%) namun secara statistik tidak mencapai nilai signifikan. Peningkatan resistensi insulin (HOMA-IR) terlihat setelah 30 hari menggunakan pil kontrasepsi dan diet tinggi lemak. Tetapi kemudian menurun dengan pemberian simvastatin, rosuvastatin dan fenofibrat, namun hanya fenofibrat yang mencapai nilai signifikan (p<0,05). Dapat disimpulkan bahwa penggunaan simvastatin, rosuvastatin dan fenofibrat dapat menurunkan kada gula darah puasa, namun berdasarkan nilai HOMA-IR, hanya fenofibrat yang dapat menurunkan resiko resistensi insulin pada tikus betina dislipidemia yang diinduksi pil kontrasepsi dan diet tinggi lemak.
SOLUTIONS TO ENHANCE THE COMPETITIVE ADVANTAGE OF SMALL AND MEDIUM ENTERPRISES IN THE CONTEXT OF POST-COVID-19 PANDEMIC IN TRA VINH PROVINCE, VIETNAM
Authors: Nguyen Ha Hong , Pham Hien Thi Thu
Published: June 2022

The purpose of this research is to find solutions to enhance the competitiveness of small and medium-sized enterprises in the context of the Post-Covid-19 pandemic in Tra Vinh Province, Vietnam, by collecting secondary data from reports from Tra Vinh Provincial People’s Committee, Tra Vinh Department of Planning and Investment, and Tra Vinh Provincial Statistics Office in the period 2016-2020. The authors used descriptive statistics, synthesis, analysis, evaluation, and expert surveys to verify former hypotheses about small and medium-sized enterprises and search for feasible solutions to enhance the competitiveness of small and mediumsized enterprises in Tra Vinh Province. The study analyzed the situation of small and mediumsized enterprises during the period 2016–2019 regarding the actual operation status, advantages, and limitations in the competition of Small and Medium Enterprises in Tra Vinh, Vietnam. From the research findings, the study proposes solutions to improve competitive advantages for Small and Medium Enterprises in Tra Vinh in thepost-Covid-19 pandemic future.
RELATIONSHIPS BETWEEN THE BELIEF PRACTICES AND THE ECOLOGICAL ENVIRONMENT WITHIN SOUTHWEST COASTAL FISHING COMMUNITY IN VIETNAM APPROACHING FROM THE THEORY OF CULTURAL ECOLOGY
Authors: Duong Loc Hoang
Published: June 2022

This article aims to examine the relationship between the belief practices and the ecological environment within Southwest coastal fishing communities in Vietnam. The fishermen’s religious practices are diverse and adaptable to the coastal environment which significantly impacts their livelihood. Case-study research withobservation and in-depth interviews indicate the obvious differences in the coastal environment between An Thuy fishing community (Ba Tri District, Ben Tre Province) and Song Doc fishing community (Tran Van Thoi District, Ca Mau Province) in the Southeast and Southwest of the East Sea respectively. The surveyed differencesdirectly affect religious activities, including the time of festivals, offerings, cuisine, and decorations in the two researched areas. In particular, the research result support the scientific theory defined by Julian Stewart, an anthropologist of cultural ecology.
APPLICATION OF PID METHOD TO CONTROL TRACTION ON THE VEHICLES THROUGH CONTROLLING THE BRAKE MOMENT AT THE TWO DRIVING WHEELS
Authors: Phan Tai Tan , Ngo Ha Thanh , Huynh Banh Thanh
Published: June 2022

A vehicle differential is a device that divides engine power between the two driving wheels and allows the wheels to rotate at different speeds when the vehicle moves on the road. The speed difference depends mainly on the grip between the wheels and the road surface. When the traction acting on both driving wheels is equal,the differential will distribute traction equally, helping the vehicle move stably on a straight road. However, if one of the two driving wheels rolls on a slippery road, the differential will distribute more engine power to this wheel. As a result, the vehicle’s motion is unstable, engine power is lost, the vehicle cannot move. To solvethe problem, using a limited-slip differential, an active differential or a traction control system is considered an optimal solution. This study uses the brake moment acting on the skidding wheel to redistribute the engine power at the two driving wheels and uses the PID method for traction control at the drive wheels. Survey results show the effectiveness of the designed controller.
WATER QUALITY STATUS OF WHITE LEG SHRIMP FARMING AREAS IN BINH DAI DISTRICT, BEN TRE PROVINCE, VIETNAM
Authors: Nguyen Trang Cong , Phan Duyen Ngoc , Nguyen Thi Hanh Dung , Nguyen Ngoc Kim Ngan , Dang Ngo Yen Loan
Published: June 2022

This study focused on water quality assessment of farmed shrimp ponds in Binh Dai District, Ben Tre Province. The goals of the study were to provide chemical parameters of pond water for farmers, to identify problems and causes in farmed shrimp related to water quality and disease, and to help managers find appropriatesolutions to minimize damage to local shrimp farming. Water samples were collected monthly from January to June 2021 from 90 vannamei farmers in six different areas, including Vang Quoi Dong, Dinh Trung Binh Thoi, Phu Long, Phu Vang, and Binh Thang of Binh Dai District. Parameters investigated in this study included pH,alkalinity, NH4+, NH3, NO2- and three other minerals. Water quality parameters were analyzed based on APHA standard analysis methods. The results showed that the water quality of shrimp farming areas in Binh Dai fluctuated from time to time, and water quality parameters were suitable for vannamei shrimp farming. However, the concentration of NO2- was always higher than the permitted threshold. The results fromcluster analysis and MANOVA testing showed that water quality of the shrimp farming areas in Binh Dai was significantly different (p < 0.05), especially NO2-, Ca, Mg and alkalinity. These findings suggest that farmers must apply proper solutions for water quality management in each farming area to maximize crop production.
Teljes versenyképességi fordulat szükséges a fenntartható felzárkózáshoz
Authors: Baksay Gergely , Nagy Ágnes
Published: June 2022

Hazánk fenntartható növekedéséhez és felzárkózásához nélkülözhetetlen a versenyképesség további erősítése. A Magyar Nemzeti Bank szerint egy gazdaság akkor versenyképes, ha a rendelkezésére álló erőforrásait optimálisan hasznosítja a lehető legmagasabb szintű, de még fenntartható jólét elérése érdekében. Magyarországon az elmúlt évtizedben kialakultak a versenyképességi fordulathoz szükséges makrogazdasági feltételek, melyek a koronavírus-járvány gazdasági hatásának kezeléséhez is stabil alapot jelentettek. Az MNB Versenyképességi jelentésének rangsorában hazánk a 18. helyen végzett az Európai Unió 27 országa között 2021-ben. Az eredmény azt mutatja, hogy a fenntartható felzárkózás, valamint a közepes fejlettség csapdájának elkerülése érdekében nélkülözhetetlen a versenyképesség további erősítése és a növekedési tartalékok hatékony felszabadítása, elsősorban a minőségi humán tőke, továbbá a gazdaság digitális és zöld átállása területén.
Analysis of the Influence of Software and Hardware Noise on the Results of Digital Signal Processing
Authors: Sharamet A. V.
Published: June 2022

The achievement of a higher quality signal processing occurs, among other things, due to the complication of its processing algorithms, i. e., an increase in the amount of calculations. This processing must be carried out in real time. One of the ways to overcome this problem is to split a complex algorithm into several simpler parts that must be executed in parallel and then combined. For this purpose, digital computing platforms are used, which are built on the basis of various discrete elements, such as programmable logic integrated circuits, microcontrollers or multi-core digital signal processors. Based on the results of the research, a mathematical expression was obtained that shows that the final signal-to-noise ratio significantly depends on the processing frequency. This ratio also depends on the element base on the basis of which digital processing algorithms are implemented. Using the characteristics of individual chips as an example, it is shown that the use of certain chip types is preferable in some cases because it allows the processing to be implemented in a wider clock frequency range.
Research of Electrophysical Properties of Thin Gate Dielectrics Obtained by Rapid Thermal Processing Method
Authors: Kovalchuk N. S. , Omelchenko A. A. , Pilipenko V. A. , Solodukha V. A. , Demidovich S. V. , Kolos V. V. , Filipenia V. A. , Shestovski D. V.
Published: June 2022

Researches of the electrophysical characteristics of gate dielectrics obtained by the rapid thermal processing (RTP) method by two-stage and three-stage processes have been carried out. Each photonic processing (stage) was carried out for 12 s at a constant power of halogen lamps and heating the wafers to a maximum temperature of 1250 °C. The first two stages of the process were carried out in an oxygen atmosphere, the third - in nitrogen or a forming gas. It was found that for dielectrics obtained by the process with final processing in a nitrogen atmosphere, the absolute value of the voltage of flat zones is 0.42 V less, than for insulators, formed by a two-stage process. This is the consequence of the elimination of a significant part of the defects, responsible for the presence of Coulomb centers in the dielectric layer. Carrying out photonic processing in anitrogen atmosphere at high temperatures of procedures for proceeding of the restructuring of the structure of the dielectric layer. For insulators obtained by a three-stage process with final processing in N2, an increase in dielectric strength and breakdown voltage by 1 V and 3.3 MV/cm, respectively, is observed in comparison with dielectrics, obtained by a two-stage process. An increase in dielectric strength indicates relaxation of elastic stresses of deformed bonds and compensation for dangling bonds both in the dielectric and at its interface with Si during high-temperature photonic treatment. Passivation by nitrogen atoms of deformations at the dielectric/semiconductor interface will also have a positive effect on the strength of the insulator.
Expanding the Possibilities of Modeling Signals of Telecommunications and Radioelectronics Systems
Authors: Ilyinkov V. A. , Maisiyevich Y. S.
Published: June 2022

The special procedure for the formation of reference values for a set of signals from telecommunication and radioelectronic systems (STR) has been developed based of the proposed library of auxiliary functions, which provides simplicity, ease of use and significantly expands the possibilities of signal modeling. An operator model of the response of an arbitrary linear system to a composite trapezoidal (periodic, non-periodic finite) signal is constructed. The mathematical model (in the time domain) of the linear system reaction to a set of the STR signals has been built, varying in form, time of existence, and method of assignment. The unified algorithm for mathematical modeling of linear distortions of the STR signals has been developed. In accordance with the latter, an ease of use of the program for mathematical modeling of the STR signal set in the time domain has been developed, representing the investigated reaction in graphical (with the ability to scale along the axes), tabular, and file forms.
Low-dimensional Magnetism in Compounds with Different Dimensions of Magnetic Interaction
Authors: Baranava M. S.
Published: June 2022

The results of a comparison of the exchange interaction mechanisms in low dimensional magnetic systems are presented. It has been shown that ZnO crystal may be used as a semiconductor non-magnetic matrix for the formation of quasi-one-dimensional and quasi-zero-dimensional magnetic systems by introducing impurity atoms of Cr, Mn, Fe, Co and Ni. Structural parameters, electronic and magnetic properties were calculated at the atomic level in the framework of quantum mechanical simulation. The exchange interaction integrals were calculated at the microscopic level using the Heisenberg model. The exchange interaction mechanisms were determined on the obtained dependences of the exchange interaction integral on the structural and electronic properties, as well as on the features of the low-dimensional magnetic systems partial density of electronic states. The results of studying the exchange interaction mechanisms in two-dimensional magnetic systems formed in materials of the MAX3 (M= Cr, Fe, A = Ge, Si, X= S, Se, Te) group are summarized. The established mechanisms made it possible to compare the conditions for the formation of a ferromagnetic order in systems with different dimensions of magnetic interaction. The ferromagnetic order in all the structures under study is formed due to the indirect superexchange interaction between orbitals of different symmetry. Strategies aimed at enhancing the superexchange interactions between orbitals of different symmetry or attenuating the contributions of the exchange interaction between orbitals of the same symmetry contribute to the formation of stable hightemperature ferromagnetism.
Cleaning of Indoor Air from Highly Dispersed Particles and Aerosols.
Authors: Pilinevich L. P. , Tumilovich M. V. , Rumiantsav D. M. , Hryb K. V. , Bunas A. G.
Published: June 2022

The production activity of many industries is associated with the release of highly dispersed particles and aerosols, as well as the subsequent capture of fine particles. Such processes take place, for example, in the production of fillers and polymers, powdered pigments and chemicals, carbon black, plant protection chemicals, lime and cement, pulverized quartz and asbestos, in the melting of non-ferrous and rare metals. According to doctors, highly dispersed particles, penetrating into the alveoli of the lungs, cause various occupational diseases of workers in the mining, coal, machine-building industries – pneumoconiosis. For example, when working in the environment containing silicon dioxide dust, workers develop one of the severe forms of pneumoconiosis – silicosis, and exposure to beryllium dust causes a very serious disease – berylliosis. To purify air and other gases from mechanical impurities, a variety of physical forces and means are used: gravitational forces, inertial forces, centrifugal forces, electric interaction forces of charged particles, capillary forces, as well as filter partitions with the appropriate pore size. To solve the problem of cleaning indoor air from highly dispersed particles and aerosols that cause the greatest harm to health, in this paper it is proposed to use electrostatic filters that provide filtration in an electric field through highly porous cellular materials. As a result of the theoretical and experimental studies, the parameters of the cleaning process and the design parameters of the electrostatic filter were determined, ensuring high process performance and the degree of purification.
THE CONCEPT OF MICRO RACIAL AGGRESSION (MRA) AMONG STUDENTS OF INSTITUTIONS OF HIGHER LEARNING
Authors: Muhamad Nasir Noormaizatul Akmar , Haji Yusoff Ahmad Mujahideen , Mohd Noor Noraini , Yaacob Nurul Husna
Published: June 2022

This article is related to micro racial aggression (KMP) which is a type of modern racism that is subtle and usually cannot be traced to its existence. Furthermore, this KMP is less noticed by perpetrators and victims but is commonly found in everyday situations in various human groups. Therefore, this article discusses the concept of KMP that occurs among students of various races in institutes of higher learning (IPT). Qualitative study that uses documentation methods in data collection. The collected data were analyzed using N Vivo 2.0 software. This article shows that KMP is a type of modern racism that typically occurs in verbal and non -verbal interactions on a daily basis that are mostly spontaneous as well as often done unintentionally. KMP is divided into three forms namely microassaults, microinsult and microinvalidation. This study can also prove about the reality of KMP in the educational environment does occur among IPT students. There is therefore a need to raise awareness and develop effective processes to reduce or prevent such KMPs from continuing to thrive and occur in the future.
STUDENTS’ INTEREST TOWARDS LEARNING ARABIC THROUGH ONLINE: A DESCRIPTIVE STUDY
Authors: Zakaria Mohd Fahimi , Saifuddin Muhammad Asyraf , Samadi Muhammad Iqbal
Published: June 2022

Arabic at Universiti Kuala Lumpur (UniKL) has been offered since its inception in August 2002 through the Student Development and Campus Lifestyle Division (SDCL). To date, there are five UniKL campuses offering Arabic subjects as a third language, which is an elective language subject that can be taken by students at the Diploma and Bachelor levels. This study tries to focus the BA learning process at UniKL campus of the Royal College of Medicine Perak (UniKL RCMP) on students' interest through online learning when the study session took place in the Covid-19 dynamic atmosphere since March 2020. A total of 98 respondents were selected among students of Arabic 1 semester July 2021 from various backgrounds such as gender, semester and program to answer some selected questions regarding their interest in Arabic subjects throughout the learning process takes place online. This study adopts a quantitative descriptive research methodology, which is one of the scientific methods that answers the question of what, who, when and where. All the details of the respondents were collected and entered in the table systematically according to the order of background. Based on the findings of the study, students 'interest in learning Arabic online is declining due to the limitations of some things that are the dominant factors that drive students' interest in learning a third language subject such as Arabic. However, the declining interest among students today due to the different learning environment should be seen as a serious matter among teachers, especially lecturers at the university to help and rebuild their interest so that the Arabic learning process becomes more interesting.
THE INFLUENCE OF PARTY BRAND EQUITY ON ATTITUDE OF THE YOUNG GENERATION
Authors: Mad-A-Dam Labuda , Ismail Syamsyul Anuar
Published: June 2022

Party brand equity is an essential strategy of political brand. Party brand equity relates the attitude to support or deciding to vote in a political party of the young generation. The methodology of the study is cross-sectional using survey questionnaire. Also, the objectives of the study are (1) purpose to examine the strategy to enhance the importance of voting in the young generation, and (2) to investigate the strategy of political party by influence of party brand equity and other party brands; there are party brand image, awareness, quality, loyalty and leadership on attitude of the young generation in the age 15 to 29 years. The study was analyzed the attitude by using party brand attitude. The findings of this study shown that, party brand equity and other party brands have a significant influence on attitude of the young generation.
THE IMPACT OF PERFORMANCE APPRAISAL ON EMPLOYEES’ PRODUCTIVITY IN ELECTRICAL MANUFACTURING SECTOR AT PENANG, MALAYSIA
Authors: Md Amin Bokhori
Published: June 2022

The purpose of this study is to examine the relationship between performance appraisal including job knowledge, communication skills, creativity and innovative on employees’ productivity in electrical manufacturing sector at Penang, Malaysia. In order to evaluate the relationship a sample size of 222 respondents taken from 28 electrical manufacturing sector with 6322 populations and 361 samples. A questionnaire was design for data collection to measure performance appraisal included job knowledge, communication skills, creativity and innovative on employees’ productivity. Stratified sampling method was used to analyze the data used SmartPls 3.7.8. The result of the study shown that job knowledge, communication skills, creativity and innovative have a significant relationship on employees’ productivity. The limitation of this study only covers electrical manufacturing sector. Suggested for future study focus on electronic, plastic and fabricated manufacturing sector in order to be more effective result in improving the performance appraisal practices in manufacturing sector.
THE SPECTRUM LENGTH METHOD IN QUANTITATIVE INTERPRETATION OF SELECTED OPTICAL SPECTRA
Authors: Wawrzyk Martyna
Published: June 2022

Different algorithms are used for the quantitative interpretation of optical spectra. Regression methods e.g CLS (Classical Least Squares) or PLS (Partial Least Squares) are often used in typical problems of laboratory spectroscopy. The spectra analysis is generally a multi-step process, in which, depending on the spectra type,  modification of individual regression methods or special dedicated methods are applied. For example, contour length method or spectra length algorithm are used in this purpose. The basic version of the algorithm is very simple in terms of mathematics. It has been proposed for the analysis of spectra in the OP-FTIR open path spectroscopy, where there are significant fluctuations in the spectrum baseline. The spectrum length is a parameter closely related to the content of the analyzed gas component. Independently of spectral length algorithm, a method has been developed in which difference length of two spectra (measured and reference) is used to compare the spectra. The minimum length of the spectral difference is an indicator of their best fitting. The article presents two ways of using the spectrum length: as a direct and indirect parameter indicating the measured quantity on the basis of the spectrum. There were performed the spectrum length algorithm as a digital differentiating filter with a specific frequency response. There were also analyzed more advanced differentiating filter and the  possibility of frequency spectrum filter design used in an analysis of optical spectral signal. There were performed the analysis of the spectrum length  method in the case of the synthetic calibration involving the use of model spectra from simulations realized by HITRAN database. There were analyzed numerically the problem of the Instrument Line Shape influence on the synthetic spectra and results of the determining the content of components by the minimizing the difference of spectral length.
THE SYNTHESIS OF MATHEMATICAL MODELS OF NONLINEAR DYNAMIC SYSTEMS USING VOLTERRA INTEGRAL EQUATION
Authors: Mokin Borys , Mokin Vitalii , Mokin Oleksandr , Mamyrbaev Orken , Smailova Saule
Published: June 2022

The problem of creating mathematical models of nonlinear dynamical systems does not have an unambiguous solution and requires the creation of a separate synthesis method for each such object. To develop a method for synthesizing mathematical models of an extensive class of nonlinear dynamical systems with polynomial nonlinearities. The work uses a method based on the solution of the Volterra integral equation in the ideology set forth in Van Trees H.L., according to which the structure of a nonlinear dynamical object present47s a series connection of the linear part, characterizing the inertial properties of the system, and the nonlinear element, given by static characteristic. The difference of the suggested version of the method from the classical one, proposed in the works of Van Trees H.L., is an expansion of their input and output signals into Fourier series and a representation of the inertial part of these systems by their Bode plots, connected into one structure with input and output signals and non-linearity by Volterra integral equation. The algorithm of the proposed method is disclosed by the example of solving the problem of identifying a nonlinear dynamical system which impulse response of the inertial part satisfies the separability requirement, the order of the polynomial nonlinearity is three, and the model of the input signal has the form of a sinusoid "raised" over the time axis on a priori given constant level. A computational experiment was carried out on the example of nonlinear dynamical systems with the third order of the nonlinear characteristic and the first and second orders of the model of the inertial part of these systems with the specified algorithms of their parametric identification. The suggested method allows to synthesis the mathematical model of a nonlinear dynamical system with the polynomial static characteristic to the case when the input signal has an arbitrary number of harmonics, and the model of the inertial part and the nonlinear polynomial function have an arbitrary order.
DETERMINATION OF THE OPTIMAL FREQUENCY O F THE PRIMARY MEASURING TRANSDUCER OF THE THICKNESS OF DIELECTRIC COATINGS OF META L SURFACES
Authors: Ovchynnykov Kostyantyn , Vasilevskyi Oleksandr , Sevastianov Volodymyr , Polievoda Yurii , Kalizhanova Aliya , Yeraliyeva Bakhyt
Published: June 2022

The article provides an analysis of the physical processes underlying the operation of the measuring transducer, with a time based information presentation. A mathematical model is developed that describes the process of free oscillation attenuation excited in the LC-contour of primary measuring transducer, and analyzes and evaluates the influence of external factors that influence the measurement results. The ways of elimination of their influence on the results of measuring control are offered.
Analysis of the application of brain-computer interfaces of a selected paradigm in everyday life
Authors: Mróz Katarzyna , Plechawska-Wójcik Małgorzata
Published: June 2022

The main objective of this paper is to carry out a research on the analysis of the use of brain-computer interface in everyday life. In this paper, various methods of recording brain activity are presented. Special attention is given to electroencephalography, which was used in the study. The brain activity used in the brain-computer interface and the general principle of brain-computer interface design are also described. The performed study allowed to develop an analysis of the obtained results in the matter of evaluating the usability of brain-computer interfaces using motor imagery. In the final stage, it was possible to evaluate the usability of the brain-computer interface in everyday life.
Comparison of LeNet-5, AlexNet and GoogLeNet models in handwriting recognition
Authors: Michalski Bartosz , Plechawska-Wójcik Małgorzata
Published: June 2022

The aim of the study was to compare the accuracy of handwriting recognition and the time needed to classify data from the test sets. The Lenet-5, AlexNet and GoogLeNet architectures were used for the research. They are all models of convolutional neural networks. The research was carried out with the use of image databases, handwritten digits MNIST and handwritten letters EMNIST. After the tests, it was found that the GoogLeNet model showed the highest accuracy, and the LeNet-5 the lowest. However, the LeNet-5 model needed the least time to complete the task, and GoogLeNet the most. On the basis of the obtained results, it was found that increasing the complexity of the model positively influences the accuracy of object classification, but significantly increases the demand for computer re-sources.
COVID 19 Vaccination Related Misconceptions and Myths
Authors: Jaffry Dr Tamkeen Nishat , Dr Hina Shan  , Dr Rehma Gillani  , Dr Uzma Hassan  , Dr Bismillah Sehar  , Rubab Zulfiqar
Published: June 2022

Background: Mass vaccination is the most effective way to fight against COVID 19 but a significant number of people are unwilling to be vaccinated, mainly due to misinformation and false beliefs, associated with this drive. The objective of this study was to identify these misconceptions and myths and associate them with sociodemographic factors.

Methodology: This cross sectional survey was conducted on 562 residents of Rawalpindi and Islamabad from July 2021 to November 2021. Data was collected through structured questionnaire both in English and Urdu, analysed by SPSS version 23. χ2-test was used to check the association of categorical data with sociodemographic factors.

Results:  Out of all the participants, 328 (58.4%) had received COVID19 vaccination. Among these vaccinated individuals, 81.8% were graduates or above and 74.2% had family income more than Rs.50,000. Out of total, 40.7% respondents believed that, vaccine is harmful for diabetics, hypertensive and heart patients, 40.6% agreed that it is not safe for pregnant or lactating women and 40.4% assumed that they have acquired immunity through natural infection. A strong association of misconceptions and myths was found with residence (p value 0.0001), educational level (p value 0.0010) and monthly income (p value 0.0001).

Conclusion: Several misconceptions and myths are related with COVID 19 vaccination, strongly influenced by various socio demographic. Hence, there is a need to launch various campaigns regarding the safety and effectiveness of vaccination.

Key words: COVID-19, Misinformation, Vaccine
Traumatic Ulcer in a Patient with Class I Malocclusion of Angle Type 1: A Case Report
Authors: Wijayanthy Intan , Sidiqa Atia N.
Published: June 2022

Abstract: Malocclusion can cause oral problems inter alia traumatic ulcers. The clinical appearance of traumatic ulcers is non-specific depending on the etiology. The ulcer has a smooth surface, yellowish base and red margin, and no induration. We reported a case of traumatic ulcer associated with class I malocclusion of Angle type I. The chief complaint was a sore lesion on the left part of the inner lower lip since two days ago due to being bitten while eating. Based on the anamnesis and clinical examination, the diagnosis of this case was traumatic ulcer with a predisposing factor of class I malocclusion of Angle type I. The management of this case was application of a covering agent, an antiseptic mouthwash, multivitamin consumption, and orthodontic treatments to manage the malocclusion in preventing the recurrence of the traumatic ulcer. In conclusion, the management of a traumatic ulcer case requires attention to the overall condition of the oral cavity by considering all the predisposition factors. Dentists must be able to recognize and to manage such case properly.Keywords: malocclusion; traumatic ulcer  Abstrak: Maloklusi dapat menyebabkan masalah rongga mulut, salah satunya ulkus traumatik. Gambaran klinis ulkus traumatik bentuknya tidak spesifik tergantung pada etiologinya. Ulkus memiliki permukaan halus, dasar lesi berwarna kekuningan dengan margin merah, serta tidak terdapat indurasi. Kami melaporkan kasus seorang pasien dengan ulkus traumatik disertai maloklusi kelas I tipe I Angle. Pasien datang dengan keluhan terdapat sariawan pada bibir bawah bagian dalam kiri sejak dua hari lalu karena tergigit saat sedang makan. Dari hasil anamnesis dan pemeriksaan klinis, didapatkan diagnosis penyakit pasien ini ialah ulkus traumatik dengan faktor predisposisi maloklusi kelas I tipe I Angle. Penatalaksanaan kasus ini menggunakan covering agent, obat kumur antiseptik, multivitamin, serta serangkaian perawatan ortodontik untuk mencegah rekurensi ulkus traumatik. Simpulan studi ini ialah penatalaksanaan kasus ulkus traumatik memerlukan perhatian terhadap keadaan rongga mulut pasien secara menyeluruh dengan mempertimbangkan segala factor predisposisi. Dokter gigi harus mampu mengenali dan menangani kasus demikian secara tepat.Kata kunci: maloklusi; ulkus traumatik
Um olhar para pressupostos Freireanos nas dissertações e teses no contexto da pedagogia
Authors: Nadalon Pereira Diuliana , Muenchen Cristiane
Published: June 2022

Resumo: O presente estudo, de cunho qualitativo, investigou, entre os anos de 2008 e 2018, como as dissertações e teses brasileiras, no contexto da Pedagogia, vêm abordando os pressupostos freireanos. O educador Paulo Freire favorece reflexões que transcendem a dimensão pedagógica, contribuindo também no campo político, no social e nas discussões de aspectos teóricos, metodológicos e epistemológicos que auxiliam na superação de uma educação bancária. As pesquisas identificadas neste artigo foram analisadas, inicialmente, com a apresentação de um panorama mais geral e, após, a partir da metodologia da Análise Textual Discursiva, em que emergiu três categorias: a) saberes necessários à prática educativa: o olhar freireano para a formação de professores e professoras; b) implementações de abordagens freireanas nos cursos de Pedagogia; e, c) currículo: das concepções às implicações e à formação inicial. Os resultados indicam que as pesquisas discutem e utilizam pressupostos freireanos, como: diálogo, criticidade, problematização, conscientização, dentre outros, os quais são considerados saberes necessários a uma prática educativa coerente com a perspectiva libertadora. Outrossim, nota-se preocupação com as questões curriculares em sintonia aos pressupostos de Paulo Freire, embora ocorra de maneira ainda incipiente. Assim, esse estudo tem suas contribuições ancoradas no mapeamento e na caracterização das pesquisas de dissertações e teses que utilizam o referencial freireano, bem como evidencia lacunas e possíveis direcionamentos para a continuidade de estudos sobre o tema. 
Palavras-chave: Paulo Freire. Pedagogia. Pesquisas.
O desenvolvimento de aplicativos e as possibilidades para a educação superior
Authors: Mendonça Mattos Rafael , Kafuri Alves Kallyne , Cunha Duarte Ana Lúcia
Published: June 2022

Resumo: O artigo apresenta o impacto do uso de tecnologias para a formação inicial de professores e propõe um aplicativo do tipo híbrido para acompanhamento dos egressos no contexto de uma Universidade Estadual da região nordeste brasileira. Tem como objetivo identificar possibilidades e potencialidades para a Educação Superior, no que tange à oferta de cursos de licenciatura na modalidade presencial, e no acompanhamento dos egressos via aplicativo híbrido. Utiliza metodologia de abordagem qualitativa com pesquisa documental para demonstrar o impacto do uso das tecnologias nos cursos ofertados pela Universidade. Apresenta dados do perfil de egressos do curso de Pedagogia, com recorte sobre desenvolvimento profissional, obtidos via plataforma Survey monkey para desenvolvimento do produto de mestrado. Conclui com observações sobre a potencialidade do uso das tecnologias para oferta da educação presencial. Apresenta como resultados dados sobre o uso do aplicativo como possibilidade de acompanhamento de egressos, o que otimiza e contribui para os processos de gestão e análise do desenvolvimento profissional na Educação Superior.
Palavras-chave: Tecnologia na formação de professores. Aplicativo Híbrido. Egressos. Educação Superior. Gestão Educacional e Escolar.