bluuebunny/crossref_metadata_2025 huggingface dataset:
An ensemble of CNN architectures for early detection of alzheimer’s disease using brain MRI
Authors: Memon Zainab , Turab Muhammad , Narejo Sanam , Korejo Muhammad Tahir
Published: October 2023

Early detection of Alzheimer’s disease (AD) has proven to be helpful and effective in preventing the disease. If the risks and symptoms of AD are detected earlier, then it seems rather promising that the death ratio of AD might decrease as it can help a lot of patients get treated before it’s too late. Our study demonstrates promising results, achieving a remarkable accuracy of 96.52% through the utilization of the EfficientNetB2 and EfficientNetB3 models. By leveraging transfer learning, we leverage pre-trained models' knowledge to optimize the learning process, while ensemble learning further improves performance by aggregating predictions from multiple models. The integration of these methodologies provides an effective and efficient means of detecting Alzheimer's Disease at an early stage, thereby offering potential benefits to patients, caregivers, and healthcare providers alike. These findings pave the way for improved diagnostic tools and contribute to the advancement of AD research and patient care.
Mode Coupling in Mode Division Multiplexing techniques for futuristic high speed optical networks and exploring optical fiber parameters to control mode coupling
Authors: Munir Abid , Ali Amjad , Latif Abdul
Published: October 2023

Fiber optic communications are inevitable to achieve higher data rates of modern telecom networks. After utilization of Wavelength division multiplexing, higher order modulations and polarization multiplexing, mode division multiplexing is a new dimension to achieve higher transmission capacity for optical fiber communication links. Different spatial distributions of optical energy along cross sectional area of optical fiber allows simultaneous transmission of data by considering each mode as an independent channel. During such simultaneous transmissions, possibility of mixing of signals amongst modes causes signal degradations and acts as limiting factor for bandwidth – distance product of the link. This effect of mode coupling has been explored in this article by presenting its mathematical formulations. A simulation has been performed to study the impact of fiber constructional parameters on mode coupling using optical wavelengths used for telecommunication systems. The observations help to develop fibers for reduced mode coupling for particular group of modes and operating wavelengths. This article paves the way forward for study of mode coupling in micro and macro bending conditions for forthcoming research endeavours.
Parametric characterization of semi-rigid asphalt skeleton using recycled materials
Authors: Jafri Syed Faraz , Memon Naeem Aziz , Memon Rizwan Ali , Sheeraz Khawaja , Khan Kamran
Published: October 2023

Concrete Pavement with significantly good resistance to wear and tear is expensive while asphalt pavement can easily be constructed and repaired but is not durable. In considerations to cost-benefit, modification in pavement construction plays a vibrant role. Exploration in semi-rigid pavement construction is getting common. This paper signifies the viable solutions of similar pavement using recycled materials. The methodology is based on detailed analysis of laboratory experimentations within the combinations of fresh aggregates, Reclaimed Asphalt Pavement (RAP) and Construction waste (CW). Focusing blend grading, clear differences are obtained between the stabilities of grouted and un-grouted samples. Likewise in the case of 100% RAP with minimum air voids and curing time, about 300% increase in stability observed in grouted sample. The paper corresponds to save the cost of 100% fresh aggregates identifying the need of the research. Possible combinations of RAP and CW reveal the passing of certain limits through grouting.
Optimization of process parameters of refrigeration process for a refrigerant mixture
Authors: Karthik Ganapathi , Parthiban Alagesan , Radha Krishnan Beemaraj , Senthilkumar Thangarajan Sivasankaran
Published: October 2023

This study optimizes refrigeration process parameters for a new refrigerant mixture. Grey relational analysis has been used to find the best process parameters that lead to a higher COP and lower compressor discharge temperature, lower compressor power, and lower mass-flow rate. A mixture of R152a-R290-R600- R600a is proposed as a refrigerant. The predicted results have been checked with confirmation tests. The results of the confirmation test are the same as the results that were predicted.
Experimental study on cylindircal particle movement in a slurry pump guide vane
Authors: Wu Xianfang , Shao Chen , Liu Houlin , Tan Minggao , Qu Bing
Published: October 2023

To investigate the movement characteristics of cylindrical particles within a slurry pump, the particle trajectories, particle distributions, particle velocity, and passing time of particles in the guide vane are tested by high speed photography. The test results indicate that the pump performance decreases and the wear of the blade pressure side deteriorates with the increase of cylindrical particle densities. The particles primarily flow into the guide vanes from the suction side and flow out from the pressure side. The velocity loss of particles in the guide vanes increases, and the time for particles passing through the guide vanes increases with particle densities. As the cylindrical particle concentrations increase, the pump performance decreases, and the wear of the blade pressure side deteriorates. Additionally, the total velocity loss of particles in the guide vane increases, and the time for particles passing through the guide vane increases with concentrations. Compared with spherical particles, the pump performance is better when the pump conveys cylindrical particles, and the cylindrical particles are more likely to wear the middle of the guide vane flow channel. The particles mainly flow into the guide vanes from the suction side and flow out from the pressure side. The velocity loss of cylindrical particles in the guide vane is smaller than that of the spherical particles. The time of cylindrical particles passing through the guide vane is shorter than that of the spherical particles.
Low pressure centrifugal fans operating with different air temperatures
Authors: Bogdanovic-Jovanovic Jasmina , Stamenkovic Zivojin , Petrovic Jelena
Published: October 2023

For normal operating conditions of the centrifugal fan, the manufacturers provide operating curves (total pressure of the fan, static pressure of the fan, power, and efficiency) for standard air conditions. However, when a fan operates with air at different, usually elevated temperatures, their operating curves can significantly differ. As a result, the fan efficiency decreases, and the energy efficiency of the fan may be reduced. Fan operation in such air conditions also affects its acoustic characteristics. This paper investigates two types of centrifugal fans: with forward curved and backward inclined blades. The main goal was to determine how their operating and acoustic characteristics change with the change in air temperature. For this analysis, low pressure centrifugal fans are used, for which we already had measured operating and acoustic characteristics. The influence of the type of impeller and the curvature of the blades play an important role in the operation of the fan. For numerical investigation, ANSYS CFX software was used, and obtained results show excellent agreement with experimental measurements.
Impact of lockdown on air quality in Belgrade during COVID-19 pandemic
Authors: Vucicevic Biljana , Zivkovic Marija , Turanjanin Valentina , Bakic Vukman , Jovanovic Marina
Published: October 2023

The Environmental Protection Agency of the Republic of Serbia continuously monitors and collects air quality parameters at numerous measuring points throughout the country. The results revealed that the levels of air pollution recorded during the lockdown differed from those recorded during the same period the previous years. In this paper, we examined pollutant concentration trends in 2020 and a few previous years to determine the underlying causes of these trends. Pollutants are measured at five stations in Belgrade from the beginning of March to the end of July between 2015 and 2020. Because no hourly data were available, NO2, SO2, and suspended particles PM10 and PM2.5 are average daily values, whereas CO and ozone are daily 8-hour maximums. Concentrations were compared and averaged only when data for the same period over time was available, i.e. when comparing 2020 to previous years. The results were compared to the annual and daily limit values (for ozone and CO 8 hours maximum, respectively), as well as the variations in concentrations over time. The goal of calculating and displaying these values is to specifically identify a change in air pollution during the COVID-19 virus pandemic isolation period. In general, for Belgrade in 2020, NO2 concentrations are lower at four stations, PM2.5 concentrations are lower at two stations, PM10 concentrations are higher at one station and lower at another, and SO2 concentrations are higher than in previous years (2015-2019).
Orthodontic therapy in children with bilateral cleft lip and palate: Presurgical orthopedic aspects in the newborn period
Authors: Radojicic Julija , Trifunovic Branislav , Radojicic Aleksandra , Cutovic Tatjana
Published: October 2023

nema
Gepárd nagy űrméretű puska fejlesztésének története 2. rész
Authors: Földi Ferenc
Published: October 2023

1988-ban készült el a 12,7 mm-es Gepárd egylövetű mesterlövészpuska kísérleti mintapéldánya, amelynek a rendszeresítés után Gepárd M1 néven sorozatgyártott változata, mintegy 90 példányban azóta is szolgálja a Magyar Honvédséget. A szerző bemutatja a fejlesztés körülményeit és folyamatát az igény felmerülésétől a mintapéldány elkészítéséig, majd az ellenőrző méréseket szolgáló tesztlövészetek végrehajtásáig.
Bayraktar drónok 2. rész
Authors: Hegedűs Ernő , Hennel Sándor , Végvári Zsolt
Published: October 2023

A Bayraktart, vagyis a TB2 futóműves indítású MALE UCAV-ot 2016-tól a török Baykar Makina cég gyártja. A felfegyverzett TB2 UAV a 2020. évi azeri–örmény háborúban, majd a 2022. évi orosz–ukrán háborúban egyaránt jelentős szerephez jutott. 2020-ban UAV-ezred szervezetben alkalmazták. A tanulmány a Bayraktar drónok történetét dolgozza fel, különös tekintettel a TB2 típusra.
Modern haditechnika, új konstrukciós megoldások és szerkezeti anyagok, megújuló képzés
Authors: Végvári Zsolt
Published: October 2023

A Honvédelmi és Haderőfejlesztési Program (HHP) a haderő számos elemét érintő, átfogó folyamat. Nemcsak új haditechnikai eszközöket szerez be Magyarország, de módosul az azokhoz kapcsolódó alkalmazási eljárás, a kiszolgálás logisztikai rendszere, valamint a kiképzés is. A szerző jelen tanulmányában a HHP keretében a Magyar Honvédség szárazföldi haderőnemének számára beszerzett haditechnikai eszközei közül ismerteti a legfontosabbakat.
Exploring NAO influence on waterbirds abundance through hydrological changes in a Mediterranean coastal wetland
Authors: Conejo-Orosa Teresa , Román Muñoz Antonio , Reche Isabel , Montes-Pérez Jorge J. , Rodríguez-Gómez Sofía , Moreno-Ostos Enrique
Published: October 2023

Predicting how waterbird populations may respond to climate change is a major challenge for conservation, which could be addressed by understanding the effects of large-scale climate oscillations, such as the North Atlantic Oscillation (NAO), on breeding population size. Here, we explore the relationship between the NAO position and the abundance of waterbird breeding pairs in a protected Mediterranean coastal wetland (Mouth of the Guadalhorce River, Málaga, southern Iberian Peninsula). We found a significant and negative relationship between the winter NAO index and the abundance of grebes (r=-0.72, N=15, p<0.01), rails (r=-0.74, N=15, p<0.01), diving ducks (r=-0.56, N=15, p<0.05) and dabbling ducks (r=-0.54, N=15, p<0.05). Our results suggest that this relation is mediated by the NAO indirect effects on wetland flooded surface via changes in winter precipitation and Mediterranean sea level. These results should be considered to design appropriate environmental management strategies devoted to preventing or mitigating potential deleterious effects of the NAO variability on Mediterranean wetlands ecosystems and preserving their valuable waterbird communities.
Physiotherapy Rehabilitation in Cerebellar Stroke: A Case Study
Authors: CB Aiyejusunle
Published: October 2023

Cerebellar stroke presents a challenging task for rehabilitation. The patient in this case study was a 61-year-old man with a diagnosis of posterior circulation ischaemic stroke. He was referred to our physiotherapy outpatient unit in a major tertiary hospital in Nigeria about two years ago. Patient could not sit up from lying, nor stand or walk independently. Visible and palpable tremors were observed in the entire body but more pronounced in the head, neck and shoulders (titubation). Patient could not perform self-care activities; there was difficulty with speech, language and communication. The treatment included free active exercises, mat exercises, bridging, rolling and sitting and standing balance training, breathing exercises, bicycling, walking within parallel bars, wobble board, facial massage, strengthening exercises, cervical collar use and home programme. Involved repetition of treatment session activities taught to his caregivers who were ascertained competent to effect. Treatment was structured into short term and long term goals. Treatment sessions were initially given twice daily, then once weekly and later once monthly, as the patient gained control, confidence and independence. After 68 sessions of treatment spanning almost 2 years, the patient had gained independent walking, improved quality of life, and in particular titubation disappeared.
Evaluation of Q Angle in Down syndrome
Authors: D Malarvizhi
Published: October 2023

Background: Down Syndrome is a genetic disorder and the most common chromosomal abnormality. It is predominantly characterized by muscle hypotonia and joint hypermobility. Qangle is the angle formed between two imaginary lines one from ASIS to Center of Patella, another from Tibial tuberosity to the Center of Patella. Objectives: Aim of the study is to evaluate the Q-angle in male children with Down syndrome of 7-16 years of age and compare the values between children with internal and external tibial torsion. Methodology: It is an observational study done with convenient sampling carried out in 12 male children with Down syndrome. The tibial torsion was measured. Based on internal and external tibial torsion they were categorized into Group A and B respectively. Group A consisting of 7 children with internal tibial torsion and Group B consisting of 5 children with external tibial torsion. Q-angle was measured using standard goniometer. Results: There is no significant difference in P-value (P>0.05) between the right and left leg of children in Group A and in Group B. On comparison between Group A and Group B, there was a statistical significance in P-Value of 0.005 and 0.050 when compared mean of Q angle for right leg and left leg respectively. Conclusion: The study concluded that assessing Q-angle helps to evaluate the biomechanical changes in knee. In this study done for the male children with Down syndrome, the Q-angle lies within the normal range of 13.1±3.5. However children with internal tibial torsion has comparatively decreased angle and children with external tibial torsion has comparatively increased angle even though there is no deviation from the normal range for the age.
EFFECT OF BITTER MELON AGAINST CISPLATIN AND VALPROIC ACID-INDUCED GENOTOXICITY IN Drosophila melanogaster Meigen
Authors: ERSÖZ Çağla , ALTUN ÇOLAK Deniz
Published: October 2023

In human body, which is exposed to number of chemicals and physical agents in daily life, malfunctions may occur from time to time in detoxification mechanisms that will prevent the harmful effects of genotoxic agents, whose negative effects cannot be eliminated. In this study, the genoprotective effects of bitter melon (Momordica charantia L.) seed and fruit extracts against the genotoxic potential of the antineoplastic agent cisplatin and the antiepileptic drug valproic acid in 72±4 hours old transheterozygous larvae of the fruit fly Drosophila melanogaster Meigen were determined by the Somatic Mutation and Recombination Test (SMART). The results showed that the mutation frequencies approached the negative control values by inhibiting the formation of chemical agent-induced mutant clones in all doses in the experimental groups in which plant extracts were applied at doses of 1.25, 2.5 ve 5 mg/mL, while the mutation frequency increased only in the groups that applied cisplatin and valproic acid. These results show that co-administration of cisplatin and valproic acid reduces the genotoxic effect of M. charantia.
La educación del razonamiento probabilístico
Authors: Batanero Carmen , Gea María Magdalena Gea Serrano , Álvarez-Arroyo Rocío
Published: October 2023

Aunque en los últimos años la enseñanza de la probabilidad se ha introducido en muchos países desde la educación primaria y se extiende a lo largo de todos los niveles educativos, la investigación nos informa de errores frecuentes al aplicarla en contextos cotidianos o en la toma de decisiones profesionales. En este trabajo se comienza analizando la cultura probabilística, como la base del razonamiento probabilístico que debiera adquirir toda persona. Seguidamente, se analizan las características y componentes básicos de dicho razonamiento y se describen algunos de los sesgos más frecuentes en el mismo. Se concluye con algunas sugerencias para desarrollar el razonamiento probabilístico de los estudiantes.
agência e o desenvolvimento profissionais de pesquisadoras narrativas que ensinam matemática
Authors: Nacarato Adair Mendes
Published: October 2023

O objetivo deste trabalho é buscar por indícios de desenvolvimento e agência profissionais nas pesquisas narrativas de três educadoras matemáticas, participantes de um grupo de pesquisa que atua colaborativamente na construção de um referencial teórico-metodológico para pesquisas (com) narrativas. Este estudo constitui-se em uma metassíntese qualitativa, cujo corpus de análise é formado por três teses de doutorado desenvolvidas na modalidade de pesquisa narrativa. A primeira delas foi realizada com licenciandos de matemática em uma universidade federal, com a análise de memoriais de formação; as outras duas foram desenvolvidas em salas de aula dos anos iniciais do Ensino Fundamental, tomando as narrativas pedagógicas como objeto de análise. O referencial teórico apoia-se nos estudos (auto)biográficos, na concepção de pesquisa narrativa de Jean Clandinin e Michael Connelly, nas ideias bakhtinianas e na perspectiva histórico-cultural. A pesquisa narrativa potencializa a tomada de consciência da própria constituição profissional e é um dispositivo de autoformação. As professoras-pesquisadoras-narradoras desenvolveram-se e exerceram a agência profissional ao atuarem na formação de estudantes da educação básica e da licenciatura em Matemática.
Percurso de estudo e pesquisa
Authors: Freitas Rita Lobo , Almouloud Saddo Ag
Published: October 2023

Neste texto nós apresentamos a estruturação de um Percurso de Estudo e Pesquisa (PEP) realizado no âmbito da formação inicial de futuros professores de matemática, cursistas do estágio supervisionado em uma universidade pública no Brasil. Um dos objetivos da pesquisa se configurou na constituição de um dispositivo teórico-metodológico capaz de promover pesquisa e formação continuada de professores sobre tópicos de Geometria Analítica Plana. O trabalho construído em torno da questão geratriz do PEP, “como ensinar a geometria analítica do ponto e da reta?”, trouxe a possibilidade de responder à questão geral da pesquisa promovendo um processo de formação profissional, a partir de um dispositivo teórico-metodológico com certas características. Os momentos de planejamento identificados nas atividades realizadas pelos professores estagiários foram bastante significativos, apesar de não ser possível identificar nas gravações as possíveis praxeologias pensadas para o ensino de GAP. Globalmente, o PEP-FP desenvolvido se mostrou ser em um dispositivo teórico-metodológico que tem um potencial para a pesquisa científica em Didática da Matemática e para a formação profissional de futuros professores
analysis of similarity concept presented in textbooks in Brazil and the United States
Authors: Amaral Rúbia Barcelos , Hollebrands Karen
Published: October 2023

This paper is a product of a research that investigates the presence of Geometry in textbooks, that is part of project of a Theorem – Reflection on Geometry and Mathematics Education research group. The focus here is to present results of the international study: how textbooks present the concept of similarity? For this, a qualitative research were developed and textbooks of three collections from Brazil and three from United States were examined. A synthesis of the literature related to the search for textbooks and the teaching and learning of the concept of similarity is presented, and the theoretical framework explores similarity as positioned at the crossroads of geometry and number to describe the ways in which different textbooks approach it. Sequence of topics and tasks presented in each textbook are described and then comparisons are made. There were theorems and problem types that were presented consistently across all textbooks, but differences in expectations related to proof and the use of coordinates and geometric transformations were identified. Only textbooks in the US included the use of transformations and coordinates and placed more emphasis on formal proof. Implications for the teaching and learning of similarity are provided
poder de ação das mídias, da maternidade e dos lares na Educação Matemática
Authors: Da Silva Soares Débora , De Carvalho Borba Marcelo
Published: October 2023

Neste artigo desenvolvemos um ensaio acerca do poder de ação (agency) da maternidade, dos lares e das mídias em processos de produção de conhecimento. Apoiamos nossas reflexões no construto teórico seres-humanos-com-mídias, o qual foi desenvolvido no contexto da Educação Matemática e sugere que o conhecimento é produzido por coletivos de humanos e não humanos. Metodologicamente, optamos por desenvolver a análise de uma narrativa, a qual apresenta a experiência de uma docente, mãe e pesquisadora, ao elaborar uma palestra durante o período do Ensino Remoto Emergencial, decorrente da pandemia da Covid-19. A análise da narrativa nos permitiu argumentar que a produção de conhecimento foi desenvolvida pelo coletivo docente-com-maternidade-lar-software-e-internet, e não apenas pelo coletivo docente-com-software-e-internet. Identificamos, portanto, características do lar da docente que tiveram poder de ação ao longo deste processo e apontamos a necessidade de mais pesquisas que abordem a temática. Neste ensaio - que combina narrativas, uma vertente da teoria da atividade, e o construto teórico seres-humanos-com-mídias – a ideia de que o poder de ação do vírus sobre humanos foi assimétrico, ganhou robustez. Em particular o efeito do vírus, da pandemia sobre mães pesquisadoras é diferenciado.
formação do engenheiro
Authors: Roncaglio Viviane , Battisti Isabel Koltermann , Nehring Cátia Maria
Published: October 2023

Essa escrita tem por objetivo identificar e analisar necessidades e motivos na significação do conceito Vetor na profissão de Engenheiro Civil, delimitado a partir da seguinte problemática: quais os enfrentamentos necessários na formação do Engenheiro, considerando a significação conceitual de Vetor, para uma atuação profissional de forma a contemplar os indicativos propostos pelas DCN? Para tanto, consideramos como instrumentos de análise um questionário enviado a egressos e uma entrevista semiestruturada proposta a um grupo de estudantes de um Curso de Engenharia Civil. O questionário foi encaminhado via formulários Google para todos os egressos do Curso de Engenharia Civil cadastrados no Programa Egresso de uma Instituição de Ensino desde 2015. A entrevista semiestruturada, foi realizada com cinco acadêmicos do curso, a qual foi realizada via Google Meet, e as transcrições constituíram o segundo instrumento de análise desta produção. As respostas dos questionários e as transcrições das entrevistas foram analisadas considerando as etapas da ATD de Moraes e Galiazzi (2016). A base teórica deste estudo foi a Teoria da Atividade de Leontiev (1978). As análises realizadas apontaram que, para enfrentar as necessidades de uma formação que contemple as novas diretrizes curriculares e que possibilite um processo formativo com significação conceitual, é preciso que a atividade educativa, se reestruture e se adapte às novas demandas do mercado, proporcionando um processo de ensino mais significativo, com articulação entre as disciplinas e proposição de atividades que mobilizem os conceitos em situações da prática profissional.
Aspectos do pensamento diferencial de estudantes do ensino médio com o GeoGebra
Authors: Domingues Ana Rita , Scucuglia Rodrigues da Silva Ricardo , Balieiro Filho Inocêncio Fernandes
Published: October 2023

Na pesquisa relatada neste artigo, busca-se explorar aspectos do pensamento diferencial e do pensar-com-GeoGebra emergentes quando estudantes do Ensino Médio investigam atividades sobre o cálculo de áreas e volumes. Incialmente, discutem-se questões sobre pensamento matemático e pensamento diferencial, propondo uma perspectiva sobre pensamento diferencial formada por quatro aspectos: noção de limite e continuidade, noção de infinitésimo, conceito de integral definida e concepção visual-geométrica. Do ponto de vista metodológico, com fundamentação na pesquisa qualitativa, desenvolveram-se experimentos de ensino com seis duplas de alunos de 1ª, 2ª, e 3ª séries do Ensino Médio, considerando a elaboração de uma tarefa composta por cinco atividades. No presente artigo, com base na noção de amostragem na pesquisa qualitativa, discutiu-se a investigação desenvolvida por uma das duplas de 3ª série em relação à atividade intitulada: “O Problema do Volume”. Os resultados destacam o papel da visualização e da experimentação-com-tecnologias no desenvolvimento do pensamento diferencial dos estudantes. Em especial, enfatizam-se como os recursos ou potencialidades do software ofereceram meios para que os estudantes articulassem os quatro aspectos que compõem o pensamento diferencial na perspectiva proposta. Por fim, este estudo contribui com a produção de conhecimentos acerca do uso de tecnologias digitais em Educação Matemática, em particular com relação ao ensino de Cálculo no Ensino Médio.
Microagressões no contexto de ensino e aprendizagem da matemática
Authors: Silva Guilherme Henrique Gomes da , Lautert Sintria Labres , Carmo João dos Santos , Santos Ernani Martins dos , Santos Diogo Emmanuel Lucena dos
Published: October 2023

Neste artigo, conceituamos microagressões relacionadas ao ensino e à aprendizagem de matemática, na perspectiva de elucidar sua noção e destacar algumas de suas possíveis manifestações na educação matemática. Nessa direção, discutimos estudos recentes, e que também temos conduzido, que vêm indicando uma relação importante entre as vivências de futuros professores e professoras que ensinam matemática com esse fenômeno e a falta de domínio de conteúdos matemáticos durante as aulasdesenvolvimento de reações aversivas em relação à matemática, que muitas vezes favorecem a manifestação de episódios de ansiedade matemática ou procrastinação. Argumentamos que as microagressões relacionadas ao ensino e à aprendizagem de matemática possuem características similares em relação às microagressões raciais. Entretanto, as questões sobre o ensino e a aprendizagem focam especificamente nos contextos de sala de aula e nas relações estabelecidas entre o professor, o/a estudante e o saber. Aqueles que têm dificuldades com o saber matemático, em ambientes acadêmicos e escolares, muitas vezes acabam sendo rotulados como incapazes de aprender e passam, ao longo de suas vidas, por situações desconfortantes. Por conta disso, a matemática possui um importante prestígio social, favorecendo o desenvolvimento de uma relação muito íntima entre matemática e poder que se reflete no contexto escolar. Considerações educacionais são discutidas acerca dos impactos das microagressões na formação docente nas relações que se estabelecem com os estudantes sob vários aspectos.
Peranan Guru PPKN Dalam Menanamkan Civic Virtue Peserta Didik di SMA YP Unila Bandar Lampung
Authors:   Universitas Lampung, Novitasari Yeti
Published: October 2023

Tujuan penelitian ini adalah untuk mendeskripsikan tentang peranan guru PPKn dalam menanamkan Civic Virtue peserta didik di SMA YP Unila Bandar Lampung. Metode yang digunakan dalam penelitian ini adalah deskripsi kuantitatif. Populasi dalam penelitian ini berjumlah 410 peserta didik dengan sampel diambil sebanyak 11% yaitu 47 responden. Sampel dalam penelitian ini yaitu random sampling. Analisis data menggunakan rumus chi kuadrat dan teknik pengumpulan data menggunakan angket dan teknik penunjang menggunakan wawancara dan dokumentasi.Hasil penelitian diperoleh persentase sebesar 0,66 % berada pada kategori kuat, hal ini menunjukkan bahwa adanya peranan guru PPKn dalam menanamkan Civic Virtue peserta didik di SMA YP Unila Bandar Lampung memiliki keeratan yang kuat dan dapat dikatakan berperan.
Muhammadiyah dalam Bidang Dakwah dan Pendidikan di Kecamatan Purbolinggo Kabupaten Lampung Tengah Tahun 1963-1985
Authors:   Universitas Lampung, Basri Muhammad , Perdana Yusuf
Published: October 2023

Penelitian ini bertujuan untuk mengetahui usaha-usaha, hambatan dan dampak positif negatif Muhammadiyah dalam bidang Dakwah dan Pendidikan di Kecamatan Purbolinggo Kabupaten Lampung Tengah Tahun 1963-1985. Metode yang digunakan dalam penelitian ini adalah metode historis dengan teknik pengumpulan data kepustakaan, dokumentasi dan wawancara. Hasil yang didapat peneliti bahwa perkembangan Muhammadiyah di Kecamatan Purbolinggo Tahun 1963-1985 terbagi dalam dua periode yaitu periode 1963-1979 dan periode 1980- 1985.Usaha-usaha yang dilakukan 1).Mengadakan pengajian di masjid-masjid milik Muhammadiyah 2).Mengadakan ceramah agama pada hari-hari besar Islam yaitu Idul Fitri dan Idul Adha 3).Mengadakan pengajian tarjih mingguan disetiap ranting Muhammadiyah, sementara dalam bidang Pendidikan mendirikan sekolah- sekolah Madrasah dan Umum.Hambatan yang dihadapi adalah adanya penolakan dakwah pada masa awal berdiri dan terbatasnya sumber daya untuk mendirikan sekolah-sekolah baik materil dannon-materil.
Seni Tradisional Hadra Pada Lampung Saibatin
Authors:   Universitas Lampung, Sinaga Risma Margaretha , Susanto Henry
Published: October 2023

Seni Tradisional Hadra Pada Lampung Saibatin. Tujuan penelitian untuk mengetahui Makna Seni Tradisional Hadra. Metode yang digunakan hermeneutic. Berdasarkan hasil penelitian seni hadra unsurnya lagu, tabuhan dan tarian. Makna seni tradisional hadra: ungkapan pujian keteladanan sifat Allah SWT dan kerinduan kehadiran Nabi Muhammad Saw, nasihat bahayadosa dan ajaran menjadikan Al-Qur’an pedoman hidup, bentuk ekspresi kesenangan hati agar lebih mendekatkan diri kepada sang pencipta, ajaran untuk hidup saling menghormati dan bertatakrama.
Orientasi Bernegara Republik Indonesia Periode 1959-1965
Authors:   Universitas Lampung, Istiqomah Luluq , Susanto Henry , Pratama Rinaldo Adi
Published: October 2023

Kegagalan demokrasi parlementer atau demokrasi liberal menjadikan pemerintahan Indonesia tidak stabil. Sistem demokrasi liberal dengan multipartai yang dijalankan diinspirasi salah satunya dari sistem yang berlaku di Belanda. Hal ini menunjukkan bahwa Indonesia belum lepas dari pengaruh kolonialisme dan imperialisme menjadikan Sukarno sang Presiden kala itu mencari solusi atas masalah dalam demokrasi liberal dan mencari alternatif lain dalam menjalankan kehidupan bernegara Indonesia yang jauh dari pengaruh kolonialisme dan imperialisme. Demokrasi terpimpin menjadi solusi dari gagalnya demokrasi liberal di Indonesia saat itu. Sejak saat itu fenomena sejarah bernegara Republik Indonesia mulai berkiblat ke negara Cina. Model pembangunan negeri Cina diyakini oleh Sukarno sebagai jalan alternatif modernisasi Indonesia yang berada di tengah pusaran Perang Dingin antara Uni Soviet dan Amerika Serikat. Penelitian ini merupakan penelitian yang menggunakan pendekatan kualitatif dengan metode historis. Peneliti menggunakan teknik kepustakaan dan teknik dokumentasi dalam pengumpulan data. Berdasarkan hasil penelitian dan pembahasan, penulis mengambil kesimpulan bahwa faktor penyebab diterapkan demokrasi terpimpin adalah Sukarno sebagai presiden memiliki perkembangan anti imperialisme dan kolonialisme. Hal ini dapat dilihat dari perilaku politiknya yang tumbuh dari faktor eksternal dan berkenaan dengan hal itu Cina memberikan inspirasi saat kunjugan Sukarno ke Cina ditengah kegagalan yang sedang dialami saat pelaksanaan demokrasi liberal, terlebih dengan kenyataan bahwa demokrasi liberal masih mendapatkan pengaruh dari Belanda. Sukarno kemudian menerapkan Demokrasi terpimpin dan Nasakom sebagai alternatif dalam kegagalan demokrasi liberal, hal tersebut justru menimbulkan risiko yang merugikan bagi bangsa Indonesia itu sendiri seperti keterasingan dari dunia Internasional dan terpuruknya ekonomi Indonesia serta peristiwa G30S yang menjadi bibit penggembosan Sukarno.
Pemanfaatan Teknologi Berbasis Sosial Media Linkedin Guna Efektivitasi, Efisiensi Permintaan dan Penawaran Kerja Di Masa Pandemi Covid-19
Authors:   Universitas Lampung, Mahrunnisya Dyanti , Ma'ruf Amar , Rahmawati Fanni
Published: October 2023

Penerapan teknologi informasi dan komunikasi memang mutlak dalam perusahaan sebagai alat bantu dalam upaya memenangkan persaingan dan meningkatkan produktivitas.Pembangunan teknologi informasi perusahaan dilakukan secara bertahap sebelum sebuah sistem holistik atau menyeluruh selesai dibangun. Hal tersebut harus disesuaikan dengan kekuatan sumber daya yang dimiliki oleh perusahaan.Dalam penerapannya, rencana strategis teknologi informasi akan senantiasa diselaraskan dengan rencana perusahaan. Kebutuhan efisiensi waktu dan biaya akan menyebabkan setiap pimpinan perusahaan merasa perlu untuk menerapkan teknologi informasi dalam lingkungan kerja.Penelitian ini merupakan penelitian studi literatur dari penelitian yang relevan. Hasil peneilitian ini menyatakan efisiensi rekrutmen tenaga kerja berbasis media online jika ditinjau dari tenaga, dan waktu jika dibandingkan dengan metode rekrutmen konvensional sangat efisien pada biaya dan waktu dibanding metode lain.
Penggunaan Tutur di Kalangan Remaja Suku Jawa dalam Berkomunikasi di Desa Pelita Jaya Kecamatan Belitang Madang Raya Kabupaten OKU Timur Tahun 1984-2019
Authors:   Universitas Lampung, Dwipayana Novilia
Published: October 2023

Suku Jawa merupakan salah satu suku paling tua di Indonesia. Suku Jawa mempunyai ciri khas kebudayaan yang identik yaitu tradisi, perilaku, serta sikap hidup dari masyarakat Jawa. Suku Jawa dalam berkomunikasi menggunakan bahasa Jawa. Dalam komunikasi sehari-hari, bahasa Jawa sudah mulai ditinggalkan oleh para penuturnya. Penelitian ini bertujuan untuk mengetahui faktor-faktor perubahan penggunaan tutur dikalangan remaja suku jawa dalam berkomunikasi di Desa Pelita Jaya, Kecamatan Belitang Madang Raya, Kabupaten OKU Timur tahun 1984-2019. Metode dalam penelitian ini adalah metode deskriptif dengan teknik analisis data kulitatif yaitu penelitian yang diuraikan dengan kata kata, fakta mengenai perubahan penggunaan tutur dikalangan remaja suku jawa dalam berkomunikasi di desa Pelita Jaya, Kecamatan Belitang Madang Raya, Kabupaten OKU Timur. Teknik pengumpulan data melalui wawancara, observasi, domunentasi. Hasil penelitian mengenai perubahan penggunaan tutur dikalangan remaja suku jawa dalam berkomunikasi di Desa Pelita Jaya, Kecamatan Belitang Madang Raya, Kabupaten OKU Timur tahun 1984-2019 adalah adanya beberapa faktor yang mempengaruhi perubahan turur itu sendiri yang disebabkan oleh faktor-faktor yaitu : faktor diri sendiri, faktor keluarga, faktor lingkungan, faktor perubahan zaman, faktor pendidikan
Mapping Of Potential Land Disasters Using GIS (Geographic Information System) In Tanggamus District
Authors:   Universitas Lampung, Nabilah Ghina
Published: October 2023

Tanggamus Regency is one area that has the potential for landslides because it’s passed over by mountains and hills. This study aims to determine the level of potential landslides and to determine the distribution of areas with potential landslides in Tanggamus Regency. This study aims to determine the level of potential landslides and to determine the distribution of areas with potential landslides in Tanggamus Regency. This study uses descriptive research methods conducted in Tanggamus Regency. The population of this research is all land units in Tanggamus Regency. Determination of the sample in this study using stratified random sampling technique. Data collection tehniques such as observation and documentation. Spatial analysis was performend with geographic information system (GIS) using Arcmap 10.3 software with scoring and overlay methods. The results of the research that have been obtained sahow that the level of potential landslides in Tanggamus Regency consists of four classes, namely non potential (492,31 ha or 0,17%), low potential (161.269,73 ha or 54,48%), moderate potential (124,555,24 ha or 42,84%), and high potential (4.403,53 ha or 1,51%). The distribution of landslide potential areas in the non potential class are spread in Air Naningan Suddistric, Kota Agung Suddistric, Pematang Sawa Suddistric, Semaka Suddistric, Ulu Belu Suddistric, and Wonosobo Suddistric. Potential landslides in the low class are scattered hroughout Tanggamus Regency. The dominant area is scattered in the areas of Ulu Belu Subdistrict. Potential landslides in the moderate class are scattered hroughout Tanggamus Regency. The dominant area is scattered in the areas of Ulu Belu Subdistrict. The high potential class landslides are spread in Kota Agung Suddistrict, Kota Agung Timur Suddistric, Kota Agung Barat Suddistric, Pematang Sawa Suddistric, and Ulu Belu Suddistric.
An Evidence-based Practice Project to Improve Sleep for Individuals with Autism
Authors: Quetglez Ariana
Published: October 2023

According to the Centers for Disease Control and Prevention Autism and Developmental Disabilities Monitoring (2023), autism spectrum disorder (ASD) is diagnosed in approximately 1 in 36 children. Common signs of ASD are difficulties with social interaction and communication, repetitive behaviors, delayed cognitive skills, and unusual sleep habits (Centers for Disease Control and Prevention, 2023). Sleep disorders are present in 80% of autistic children and 50% of autistic adults (Lane et al., 2022). Common sleep issues reported are prolonged sleep latency, reduced duration of sleep, and waking during sleep (Lane et al., 2022). These common sleep issues have been associated with an increase in physical aggression, inattention, oppositional behavior, tantrums, self-injury, and mood variability in the ASD population (Seo, 2021). Weighted devices such as weighted blankets, compression t-shirts, and garments are becoming a popular discussion for improving sleep for individuals with ASD. In theory, weighted devices such as weighted blankets create a deep pressure sensation that decreases one’s physiologic level of stress and arousal, potentially improveing sleep quality (Bolic Baric et al., 2021). Despite the increasing popularity of weighted devices, it remains unclear how effective these weighted devices are in reducing sleep disturbances for individuals with ASD.
Antitumor Activity of Dehydroxymethylepoxychinomycin (DHMEQ) and Cisplatin Combination in a Model of Disseminated Ovarian Cancer
Authors: Kzyrgalin Sh. R. , Yamidanov R. S. , Amirov R. A. , Gantsev Sh. Kh.
Published: October 2023

Introduction. Ovarian cancer (OC) is recognized to be a pressing problem of modern oncology. Cytoreductive surgery and combined therapy based on platinum and taxanes play an important role in OC treatment. The response rate to first-line therapy accounts for about 80–90%. However, most patients relapse and develop resistance to therapy. Thus, the search for new effective drugs and new combinations for OC treatment is an urgent task of modern oncology.Aim. To evaluate in vivo the antitumor activity of dehydroxymethylepoxyquinomycin (DHMEQ) and cisplatin combination in an ovarian cancer model.Materials and methods. An experimental model of disseminated OC in rats was used to evaluate antitumor activity. A strain of ovarian tumor (OT) was transplanted into 200 female Wistar rats. The drugs were administered intraperitoneally. The “median life expectancy” was taken as a benchmark for the quality evaluation of experimental treatment.Results. It was found that DHMEQ and cisplatin combination increased the survival rate by 387% (p = 0.005, log-rank test) compared to the control group and by 91% compared to the group of animals treated with cisplatin (p = 0.003, log-rank test) in mono mode. More than 50% of the animals in the DHMEQ + cisplatin group remained alive on day 73 of the experiment. No animals remained alive in the cisplatin group, and only one rat remained in the DHMEQ group.Discussion. Thus, the obtained data demonstrate a potentiating antitumor effect of the DHMEQ + cisplatin combination by 387% compared to the control group.Conclusion. The results of the experiments demonstrated a potentiating antitumor effect of DHMEQ in combination with cisplatin. DHMEQ in combination with cisplatin manifests high efficacy in an in vivo model of ovarian cancer.
Perfusion Computed Tomography in the Diagnosis of Colonic Diverticular Disease and its Complications
Authors: Timerbulatov M. V. , Itkulov A. F. , Baikov D. E. , Ibatullin A. A. , Khafizov M. M.
Published: October 2023

Introduction. Colonic diverticular disease (colonic diverticulitis) is considered to be a serious medical and social problem of modern society, marked by a persistent decrease in the quality of life of patients and a steady growth in morbidity with a tendency to increase complications of the underlying disease in the form of inflammatory destructive changes in the intestinal wall.Materials and methods. The study involved 63 patients with colonic diverticulitis, males and females, aged 34 through 79 years. All participants were divided into 3 groups, depending on the damage to the intestinal wall. The first group included 11 patients with intact intestinal wall, the second group included 43 patients with diverticulitis, and the third group — 9 patients with adenocarcinoma of the large intestine.Results and discussion. When performing perfusion computed tomography (PCT) of the intestinal wall, it was found that BF values in acute diverticulitis, compared to the intact intestinal wall, increased on average by 1.7 times, while in malignancies — by 5.3 times. BV values in acute diverticulitis, as compared to the intact intestinal wall, increased by 9.2, and in malignancies — 13.6 times. MRI values in acute diverticulitis, as compared to the intact intestinal wall, increased by 2.5 times, and in malignancies — 3.9 times. PS values in acute diverticulitis, as compared to the intact intestinal wall, increased by 1.7 times, and in malignancies — 3.8 times.Conclusion. Since PCT is able to detect the difference of microcirculation parameters in inflammatory and malignant processes, it can be used in the diagnostic algorithm to determine further treatment strategy.
Predictors of Multiple Primary Malignancies: Literature Review
Authors: Sultanbaev A. V. , Menshikov K. V. , Musin Sh. I. , Izmailov A. A. , Menshikova I. A. , Sultanbaeva N. I.
Published: October 2023

The present paper considers the predictors of multiple primary malignancies. The multiple primary malignancies are often induced by genetic predisposition and familial cancer syndromes, environmental carcinogens and bad habits (e.g. tobacco and alcohol abuse), immunodeficiency and infectious diseases, carcinogens occurring as a result of various treatments, etc. Germinal mutations are considered to be one of the causes of primary cancer — they increase the risk of various multiple primary malignancies. Hereditary cancers are characterized by a strong family history, early age of onset and occurrence of multiple primary malignancies. The paper considers various mechanisms of multiple primary malignancies with an emphasis on the effect of carcinogens in carriers of pathogenic genes on cancer development. In proven cases, when patients are exposed to multiple carcinogens, they should be aware of possible late and long-term effects of treatment and their symptoms, as well as secondary malignancies that might occur. When the main predictors of carcinogenesis are manageable, and primary preventive measures can be taken, the hereditary malignancies require postexposure prophylaxis. In addition to specific recommendations for the prevention of primary cancers, it is essential to follow recommendations for the prevention of second primary cancers.
Predictors of Liver Cancer: a Review
Authors: Sherifova A. I. , Parsadanyan A. M.
Published: October 2023

The present paper reviews current publications of Russian and foreign authors addressing the issues of liver pathology and associated consequences. Primary liver cancer is a malignant tumor originated from hepatocytes and epithelium of the biliary duct. It differs from other liver pathologies by rapid progression and low life expectancy of patients. The morphology of cancer and its carcinogenesis is particularly considered. The paper describes the carcinogenesis of liver cancer in detail. Numerous scientific papers consider liver cancer as a global health issue due to the late diagnosis and, consequently, the limited treatment options for patients with this disease. The analysis of recent publications revealed that the incidence of this pathology tends to increase worldwide. According to the available data provided by different experts who study cancer globally, about 906 thousand new cases of liver cancer are registered annually and the number of patients is expected to exceed 1.4 million by 2040. In the conclusion, the present paper briefly observes the reasons of the late diagnosis of liver cancer and its consequences.
Clinical Cases of Successful Endoscopic Bronchial Stenting
Authors: Panteleev V. S. , Nartaylakov M. A. , Safonov A. S. , Petrov Yu. V. , Pogorelova M. P. , Shagabutdinov T. A.
Published: October 2023

Introduction. A comprehensive approach to restore the patency of the trachea and bronchi in stenoses of various origin consists in their endoscopic stenting, which can be both temporary and maximum continuous.Materials and methods. The study presents two clinical cases of successful endoscopic stenting of the lower lobar bronchi of the lungs with relief of respiratory failure. In the first case, the left inferior lobar bronchus was compressed from the outside by a hematoma from a ruptured false aortic aneurysm. Thus, the aneurysm was stented first, and the compressed bronchus — second. In the second case, the right inferior lobar bronchus was stented due to lung metastases. In both cases, bronchial stenosis was accompanied by pulmonary atelectasis.Results and discussion. In both cases, stenting was effective in restoring the patency of stenosed bronchi and expanding the lungs, which enabled respiratory failure to be stopped. In the first case, 3 months after the stenting, its outward migration was revealed, but no recurrence of bronchial narrowing was observed during further dynamic observation. In the second case, the follow-up of the patient for 6 months after stenting showed adequate functioning of the stent.Conclusion. The presented clinical cases demonstrate high efficacy and reliability of endoscopic stenting in bronchial stenoses of various origin to cope with the respiratory failure and thereby improve the quality of life.