bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analysis of rock void space from digital core photographs using computer vision algorithms
Authors: Прозорова Г.В. 
Published: May 2022

Статья посвящена компьютеризации исследований литологического состава и свойств горных пород по фотографиям керна. Современная оптическая микроскопия позволяет получать высококачественные фотографии образцов пород. Сложность их компьютерного анализа обусловлена высокой неоднородностью и изменчивостью цветовых характеристик литотипов и свойств, отсутствием единого цветового классификатора. Проанализированы разработки по автоматической и полуавтоматической классификации фотографий керна. Предложена схема компьютерной оценки параметров пористости и трещиноватости по фотографиям петрографических шлифов: полуавтоматическое выделение пустот по цветовым признакам; автоматическое выделение трещин по геометрическим признакам; расчет параметров общей пористости, суммарной длины и средней ширины трещин. Схема реализована с использованием алгоритмов библиотеки OpenCV, интегрированных в пользовательское программное приложение, и опробована на реальных данных.
The article is devoted to the computerization of studies of the lithological composition and properties of rocks based on core photographs. Modern optical microscopy allows obtaining high-quality photographs of rock samples. The complexity of their computer analysis is due to the high heterogeneity and variability of color characteristics of lithotypes and properties and the lack of a unified color classifier. The article analyzes the development of automatic and semi-automatic classification of core photographs. A scheme for the computerized assessment of porosity and fracture parameters based on photographs of petrographic thin sections shall be proposed: semi-automatic selection of voids by color; automatic selection of cracks based on geometric features; estimation of parameters of absolute porosity, total length and average width of cracks. The scheme is implemented using algorithms of the OpenCV library, integrated into a custom software application, and was tested on real data.
Optimizing the transformer model for speech recognition
Authors: Чучупал В.Я. 
Published: May 2022

Применение нейросетевых моделей «кодер – декодер с вниманием» в системах распознавания речи обеспечивает высокие показатели точности. К существенным ограничениям этих моделей относятся: отсутствие режима реального времени и большая вычислительная сложность (количество операций и объем требуемой памяти). Формально сложность алгоритма вычисления функции самовнимания растет пропорционально ( ) 2 O n , где n – количество элементов слоя сети. Использование физических свойств речевого сигнала позволяет построить такой алгоритм вычисления функции самовнимания, который имеет оценку сложности O n( ) и при этом рассчитан на потоковую обработку сигнала, в том числе работу кодера трансформера в реальном масштабе времени.
The use of neural models “encoder – decoder with attention” in speech recognition applications provides high recognition accuracy rates. The significant limitations of these models include the lack of streaming mode and high computational complexity (in terms of the number of operations and the amount of memory). Formally, the complexity of the self-attention algorithm grows as 2 O n( ), where n is the number of elements in the attention layer. The use of the physical properties of a speech signal makes it possible to construct such an algorithm for calculating the self-attention of Transformer’s encoder, which has the complexity as low as O n( ) and at the same time is suitable for recognition in streaming and realtime operation modes.
Model of adaptive rocket control system with two-stage identifier and reference a model of its movement
Authors: Аль Сафтли Ф.Х. 
Published: May 2022

Разработана адаптивная система управления как одна из важнейших компонент информационно-управляющей подсистемы управляемой авиационной ракеты, оснащенной телевизионной головкой самонаведения. Осуществлена программная реализация функционирования адаптивной системы с использованием объектно ориентированного языка программирования MatLab & Simulink. Исследована разработанная система управления в целях сокращения объемов управляющей информации и повышения ее устойчивости при распознавании образов наземных целей и использовании априорной информации о динамике поведения объекта управления в условиях его неопределенности.
An adaptive control system has been developed as one of the most important components of the information and control subsystem of a guided aircraft missile equipped with a television homing head. The software implementation of the functioning of the adaptive system was carried out using the objectoriented programming language MatLab & Simulink. The developed control system has been studied in order to reduce the volume of control information and increase its stability when recognizing images of ground targets and using a priori information about the dynamics of the behavior of the control object under conditions of its uncertainty.
Organization of the access system to unmertaked facilities with providing information security
Authors: Ильминский П.С. , Киреева Н.В. , Поздняк И.С. 
Published: May 2022

В настоящее время системы управления и контроля доступа применяются для решения задач доступа, в том числе для автоматизированного доступа в необслуживаемые помещения. Рассматривается один из вариантов организации системы контроля доступа с обеспечением информационной безопасности, что позволяет эффективно организовать удобный доступ в помещение и противостоять угрозам, направленным на нарушение безопасности информационных объектов промышленных систем. Подробно охарактеризована организационная структура системы контроля, этапы управления доступом, приводится схема работы разработанной системы. Кроме того, рассмотрена необходимость разработки системы контроля доступа в необслуживаемые помещения с учетом информационной безопасности.
Currently, access management and control systems are used to solve various problems of physical protection of objects, including for automated access to unattended premises. The requirements for such systems are shaped by the need for enterprises to resist external threats. The article discusses one of the options for organizing an access control system with the required level of information security. This will make it possible to effectively organize convenient access to remote premises and resist threats aimed at breaching the security of information objects of industrial systems. The paper considers the need to develop an access control system for unattended premises taking into account information security. The organizational structure of the control system and the stages of the proposed access control method taking into account the use of multi-level authentication are described in detail. The rationale for choosing a platform for developing a multi-level authentication system is given. In addition, the scheme of operation of the proposed system is presented.
Textos e Debates n°16
Authors: Completa Revista 
Published: May 2022

É com grande satisfação que o Centro de Ciências Humanas, em conjunto com a Editora da UFRR, proporciona à comunidade universitária a edição número 16 da Revista Textos & Debates.
Após o forte empenho do comitê Editorial da Revista estamos empenhados em garantir a regularidade e a qualidade da mesma. Deste modo, cumprimos com o principal objetivo da Revista que é estimular a produção acadêmica e científica e garantir aos professores, pesquisadores e estudantes da UFRR e de outras instituições do país um espaço adequado para publicar seu trabalho. É com grande satisfação também que observamos a imensa procura e, consequentemente, as contribuições de outros profissionais do país, que cada vez mais têm enviado textos para serem publicados em nossa Revista, ampliando o debate tão necessário para a retomada de posições críticas e para a constituição do processo de produção do conhecimento.
Agradecemos a todas as pessoas que contribuíram com seus artigos para a publicação desse número, desejando aos leitores uma boa leitura e que se sintam estimulados a contribuir com suas produções acadêmicas para os próximos números.
A questão chavista na historiografia
Authors: Salgado Tiago Santos 
Published: May 2022

O artigo tem o objetivo de apresentar um mapa historiográfico acerca do período chavista na Venezuela, situando como diversos intelectuais pensam e problematizam as questões relacionadas a natureza do regime político venezuelano após a chegada de Chávez ao poder político em 1998, assim como a própria dinâmica das lutas de classe no país e a forma como os diferentes atores sociais e políticos se alinharam em relação às políticas neoliberais. Por fim, esperamos oferecer aos interessados na história recente venezuelana uma ferramenta que abarque diversas leituras e arcabouços teóricos que possam auxiliar nas reflexões críticas acerca dos processos políticos e sociais vigente no país.
Palavras-chave: Venezuela; Hugo Chávez; Historiografia
Rentismo e Crise
Authors: Jarochinski João Carlos , Peres Vítor Plácido dos Santos 
Published: May 2022

A crise que hoje atormenta a Venezuela
repercute no intenso deslocamento
forçado de pessoas que se testemunha e
em um Estado que implode. Porém, tão
importante quanto avaliar as repercussões
da crise é identificar as causas estruturais
da mesma. Com este intuito, neste artigo
abordaremos a interface entre rentismo
e crise na Venezuela, com o objetivo de
contribuir para um esforço de compreensão
mais longitudinal, capaz de contemplar as
continuidades e rupturas concernentes ao
funcionamento do Estado e da economia
venezuelanos contidas no quadro da crise
atual, por meio de uma análise pautada na
revisão bibliográfica das produções que
discutem a história venezuelana. Para isso
percorremos três momentos distintos da
história venezuelana: a ascensão e queda
do pacto de Punto Fijo; a Venezuela sob
Chávez; e a Venezuela pós-Chávez. Ao
final, argumentamos que a crise atual tratase
de uma crise oriunda das tecnologias
rentistas não superadas pelo projeto
bolivarianista.
Textos e Debates n°13
Authors: Completa Revista 
Published: May 2022

Eis que vem a público mais uma edição da Revista Textos & Debates, continuando com seu objetivo de divulgar a produção da comunidade da Universidade Federal de Roraima, do Estado e do país.
Nós, do Comitê Editorial, percebemos com grande satisfação a crescente procura pela Revista, demonstrando a produção dos pesquisadores e o respeito pela publicação do CCH. Assim, temos a convicção de estarmos contribuindo para o debate na área das Ciências Humanas, tendo em vista a qualidade dos artigos e a diversidade dos mesmos.
Nesse Número específico temos a colaboração de pesquisadores de outros estados da federação bem como artigos que versam sobre temáticas nos campos da Sociologia, História, Ciência Política, Antropologia e Educação.
No próximo número a Revista Textos & Debates deverá inaugurar uma nova etapa em sua trajetória, com a publicação de dossiês. Dessa forma, atendemos a uma reivindicação antiga de pesquisadores com a preocupação de aprofundar temas relacionados à realidade regional, através da publicação de dossiês temáticos.
Esperamos que os leitores apreciem os textos e se motivem a enviar suas produções para continuarmos trazendo o debate para o campo acadêmico e, assim, contribuir para uma melhor discussão no campo das Ciências Humanas.
Textos e Debates n°9
Authors: Completa Revista 
Published: May 2022

É com grande satisfação que apresentamos à comunidade universitária a edição de número 9 da Revista Textos & Debates. Desde que assumimos a editoria da Revista, um de nossos principais compromissos foi o de realizar ações objetivas para estimular a produção acadêmica e garantir aos seus professores, pesquisadores e estudantes um espaço adequado para mostrar seu trabalho, colocando-nos, ainda, abertos para contribuições de outros profissionais do país que têm buscado contribuir com nossa revista, ampliando, dessa forma, o debate a que nos propomos.
Acreditamos que a Revista representa um espaço efetivo de divulgação de novos conhecimentos, constituindo-se num mecanismo importante de debate e de estímulo à crítica, tão fundamental no mundo acadêmico e na formação das pessoas, tendo em vista sua inserção no mundo enquanto sujeitos sociais, políticos e participativos.
Agradecemos a todos aqueles que, sensíveis a este projeto, contribuíram com seus artigos.
Essa edição conta com artigos que versam sobre educação e arte, educação indígena, organização de trabalhadores, nos âmbitos rural e urbano, questões migratórias em Roraima, entre outros.
Desejamos a todos que tenham uma boa leitura e que se sintam estimulados a contribuir com suas produções acadêmicas para os próximos números.
O Estado Comunal e Seus Antípodas
Authors: Pinheiro Jair 
Published: May 2022

Este artigo visa a examinar a luta em torno
do Estado Comunal, como realização
da democracia participativa protagônica
estabelecida na Constituição venezuelana.
Para alcançar este objetivo, o artigo está
dividido em duas seções. A primeira
descreve a estrutura do Estado comunal,
a segunda, a luta em torno dele, além das
considerações finais relativas à questão
democrática.
Pattern of adverse drug effects reported by patients being treated in a tertiary healthcare institution in North India: A retrospective observational study
Authors: Kansal Dinesh , Patiyal Nitin , Gautam Abhishek , Chauhan Ankita , Bodh Suman 
Published: May 2022

: Patient safety and well-being is favored by reporting adverse drug effects timely and precisely. Pharmacovigilance contributes to post-marketing surveillance and ensures that necessary changes may be done to the drug labels accordingly.: The study was aimed at observing, analyzing and reporting various adverse effects due to prescribed drug intake for patient conditions and disease being treated at our tertiary healthcare institution.: Study was conducted at Dr. RPGMC, Kangra at Tanda, which is a multi-specialty tertiary healthcare hospital with 700 beds and an ADR monitoring Centre situated in the lap of western Himalayas in North India. Pattern of ADRs reported by the volunteers receiving drug therapy from January to December 2021 was assessed. Data pertaining to age, gender, drug intake, types of ADRs, treatment and outcome of the reactions was collected. Individual assessment was done for each patient. WHO scale was used for causality assessment. ADR profiling was carried out based on site, onset, organ system affected, duration, whether urgent referral was required or not and resolution of signs & symptoms.The data was analyzed using Microsoft excel 2019 and expressed as mean ± standard deviation & percentages.: A total of 83 patients reported ADRs (adverse drug reactions). These were reported to IPC, Ghaziabad through our AMC (Adverse Drug Reaction Monitoring Centre) from 1 January 2021 to 31 December 2021. Gastro-intestinal system related adverse effects (35%) were most common followed by skin (22.9%) and CNS (12%) adverse effects. GI adverse effects included anorexia, dyspepsia, diarrhoea, oral ulcers, nausea, vomiting, weight-loss and raised liver function tests.: ADRs occur commonly but are often undetected. Even if detected they remain underreported as most of the health care professionals are unaware about pharmacovigilance. Therefore, mass sensitization and reward to those who report ADRs vigilantly is the need of the hour to promote patient safety.
AN EXPLORATIVE STUDY ON THE IMPLEMENTATION OF PROBLEM-BASED LEARNING (PBL) IN TEACHING READING
Authors: Fathurrohman Burhan , Adiarti Dian , Purwati Tuti 
Published: May 2022

This research explores the implementation of problem-based learning (PBL), aspects of PBL, and teacher’s and students’ perceptions about PBL. This research was conducted at SMA Negeri 2 Cilacap, taking 34 tenth grade students as the sample from X IPS 1 and an English teacher as a participant. The data were collected using observation, questionnaires, and interviews. The data were analysed using Miles and Huberman’s (1984) four types of analytical activity and presented descriptively. The result shows that the implementation of PBL in on the chosen sample is in line with the stages of PBL implementation entailing: 1) the teacher organizes the students to a problem, 2) the teacher organizes the students to learn, 3) the teacher as the participant helps the independent inquiry and groups, 4) the teacher helps the students develop and present the work, and 5) the teacher analyses and evaluates the problem-solving process. Then, the analysis of the aspects of PBL suggests such things as 1) the problem as the point in PBL, 2) the students’ discussion activities, 3) the teacher’s help in students’ discussion, 4) the students’ activeness, and 5) the teacher’s and students’ perception about PBL in reading skill. The teacher positively thinks that the materials in reading skills match with the PBL teaching model. It was found that PBL leads the students to discuss and train their activeness, ability to learn to solve problems, share ideas, and work cooperatively in a group. Another finding also denotes that they think that PBL is one interesting model which can support them to understand the text, because students can get insight from their friends and their teacher when having discussion.
Flow-Based Intrusion Detection on Software-Defined Networks: A Multivariate Time Series Anomaly Detection Approach
Authors: ZAVRAK Sultan , İskefiyeli Murat 
Published: May 2022

Abstract
In this study, the SAnDet architecture, which can do anomaly-based intrusion detection by taking advantage of the capabilities offered by the SDN architecture, is presented and implemented as a controller application. A detailed description of this system which consists of three main modules which are statistics collector, anomaly detector, and anomaly prevention is given. More specifically, Replicator Neural Networks (RNN) which is a special variant of the autoencoder, and the EncDecAD method which is a special type of LSTM network that can produce successful results, especially in given data series, are used to identify unknown attacks using flow features collected from OpenFlow switches. In experiments, flow-based features extracted from network traffic data including different types of attacks, are given as input into models as time series. The results of the methods are calculated using the ROC and AUC metrics. Experimental results show that EncDecAD outperforms RNN. Moreover, it is demonstrated that this study has several benefits over previously conducted research.
Leaf traits and mineral contents of Rhizophora mangle L. subject to environmental pollution
Authors: Victório Cristiane Pimentel , Santos Mayara dos , Alves Guilherme , Bento João Pedro , Souza Marcelo , Arruda Rosani 
Published: May 2022

Abstract
Rhizophora mangle L. (Rhizophoraceae) is a halophyte from two mangroves in the municipality of Rio de Janeiro in Rio de Janeiro state, Brazil. This work aimed to determine the presence of environmental contaminants in the leaf of R. mangle through morphological and chemical analyses. We collected samples in Coroa Grande mangrove (CG), near an industrial park, and Pedra de Guaratiba mangrove (PG), which is currently under threat of anthropization by domestic occupation. Energy Dispersive X-Ray Spectroscopy (EDS) coupled to Scanning Electron Microscopy (SEM) revealed the presence of chemicals and their relative quantities in leaves. Light microscopy and Scanning Electron Microscopy (SEM) were used to examine leaf tissue. Na, Ca and Cl were found in both CG and PG. Specific leaf area was significantly lower in PG. Leaves from CG also presented the three heavy metals Mn, Zn and Cu. R. mangle presents succulent, hypostomatic leaves with dorsiventral structure. Abundant mucilage and crystals in idioblasts were observed. Slight differences in anatomical qualitative traits between leaves from both sites were detected. Leaves from CG were slightly thicker than those examined from PG, especially on main vein vascular system, and a high quantity of stomata was observed in abaxial surface of leaves from PG. Collectively, these findings indicate that R. mangle is resilient and tolerant to the environmental pollutants and presents functional traits related with saline environments; therefore, the morphoanatomical variations are probably related to abiotic factors.
Farmers’ Perception of improved Maize Varieties Adoption in Abuna Gindeberat, Ethiopia
Authors: Beyene Adunaa Amante , Abate Warkew Legesse 
Published: May 2022

Abstract
Generation and transfer of improved technologies to farmers believed to be critical and pre-requisites for agricultural development in Ethiopia. However the use of improved crop varieties particularly improved maize varieties has been limited by small holder farmers in the study area. The aim of this study is examining how small holder farmers perceive improved maize varieties adoption practices and with a purpose of generating information that help to understand and evaluate key challenges to adoption perception which will enhance informed decision making to improve adoption practices to increase production and productivity. This study used a three stage sampling procedure in which purposive selection of district and Kebeles were selected by using simple random sampling. Stratified sampling was employed to identify adopters and non-adopters and simple random sampling was used to select respondents. The study is based on primary data collected from 143 sample selected through interview schedule assisted survey questionnaire. Additional information was also obtained from focus group discussion, key informant interview. Qualitative data were used to substantiate the responses of questionnaire. High yield capacity, disease resistance, drought resistances, heat stresses, marketability and early maturity were the most farmer-preferred traits. Socio-demographic factors, such as gender, education level, access to extension service, farm size, livestock ownership, access to credit service influenced maize variety adoption decision. Both adopters and non-adopters perceived improved maize varieties are superior over local varieties by high yielding capacity, marketability, disease resistant, early maturity.
Microwave and ultrasonic-assisted diastereoselective synthesis of highly functionalized Spiro pyrrolidine-2,3'-thieno[2,3-d]pyridazine with microbicidal and larvicidal properties supported by DFT simulation and molecular docking
Authors: Rizk Sameh A. , Rizk Nihad A. , Abdo Abdullah M. 
Published: May 2022

Abstract
A novel class of Spiro-heterocyclic derivatives ( 2-6 ) can be synthesized and assessed as ecofriendly microbicidal and insecticidal activities to establish a structure-activity relationship (SAR). The synthesis was taken out through green tools of a one-pot multicomponent reaction (MCR) of β-aroyl-acrylic acid and thioglycolic acid and β-(2-oxopyrrolidin-1-yl) ethanol. The one-pot MCR with ultrasonic and microwave-assisted irradiation was found to be a simple and efficient approach for preparing Spiro derivatives. Elemental analysis and spectroscopic data were used to describe the structures of all synthesized products. The regioselective formulation of Spiro-heterocyclic molecules is intriguing because these compounds have unique non-planar structures and a high potential for binding to biomaterials due to their inherent rigid chiral structure. The microbicidal and insecticidal pursuits of the compounds were investigated on ATCC coded test microorganisms and insect’s 3 rd instar larvae with medicinal and economically valuable, Mythimna separate and Nilaparvata lugens , correspondingly compared to the standard pesticide chlorpyrifos, a pesticide with a similar mode of action. The preliminary testing demonstrated flourishing microbicidal capability to prevent the progress of threatening pathogenic bacteria besides blossoming insecticidal efficacy. Moreover, Molecular docking plus density function theory (DFT) simulations can be expended to validate the experimental results.