bluuebunny/crossref_metadata_2025 huggingface dataset:
Paralelização Eficiente para o Algoritmo Binário de Exponenciação Modular
Authors: Lara Pedro Carlos da Silva , Oliveira Fábio Borges de , Portugal Renato
Published: August 2022

Algoritmos de exponenciação modular têm um papel importante na criptografia assimétrica. O desempenho do RSA, por exemplo, depende de um algoritmo de exponenciação modular. Esta operação é a mais custosa em muitos métodos de criptografia, por exemplo, no protocolo Diffie-Hellman. Uma implementação eficiente da exponenciação modular tem forte impacto sobre estes métodos.Neste trabalho, é proposta uma modificação do algoritmo binário de exponenciação modular, que explora um método de paralelização e reduz a complexidade do algoritmo por um fator quadrático no número de multiplicações.
Ceremonies Design for PKI's Hardware Security Modules
Authors: Martina Jean Everson , Souza Túlio Cícero Salvaro de , Custódio Ricardo Felipe
Published: August 2022

Ceremonies are a useful tool to HSMs in PKI environments. They state operational procedures and usage scenarios. Their correct construction can lead to a safer operation. This paper presents basic ceremony procedures to manage the life cycle of cryptographic keys and ideas of requirements needed to assure security throughout the usage of ceremonies in the context of an HSM It presents ceremonies to make the implementing the OpenHSM protocols. OpenHSM protocol operational establishing basic building blocks that can be used by any PKI application based in an HSM. Our main contributions are the re-usage of ceremony phases and a survey on formal methods to verify them.
Uma Metodologia Seis Sigma para Implantação de uma Gestão de Segurança da Informação Centrada na Percepção dos Usuários
Authors: Oliveira Maria Angélica Figueiredo , Nunes Raul Ceretta , Ellwanger Cristiane
Published: August 2022

Atualmente, existe uma série de metodologias, modelos e frameworks para a implantação da gestão da segurança da informação. No entanto elas não direcionam a implantação para as características críticas do usuário. Este artigo propõe uma metodologia de gestão da segurança da informação baseada na abordagem Seis Sigma, a qual é fundamentada em dados e evidências gerados pelos usuários. A metodologia proposta foi aplicada em um estudo de caso envolvendo duas unidades hospitalares e os resultados demonstram a efetividade da metodologia: uma melhora de 43,8% na qualidade da segurança da informação percebida pelos usuários e um aumento de 47,3% no nível de entendimento sobre o tema. Sua aplicação contribui para o gerenciamento sustentável da segurança da informação.
Detectando eventos em redes utilizando um modelo de rastreamento de fluxos baseado em assinaturas
Authors: Corrêa Jorge L. , Proto André , Alexandre Leandro A. , Cansian Adriano M.
Published: August 2022

Analisando o tráfego atual de rede é perceptível uma grande variedade de protocolos gerando tráfego em diferentes densidades, tornando-se cada vez mais difícil detectar eventos específicos em meio a esta grande diversidade. Este trabalho apresenta um modelo de detecção de eventos baseado em assinaturas que utilizam informações fornecidas exclusivamente por fluxos. Estas assinaturas são descrições exatas (de abuso) ou baseadas em limiares (de anomalias) que permitem o rastreamento de eventos em meio aos fluxos de um ambiente de rede. O sistema ACHoW é uma implementação deste modelo e possibilita a detecção e identificação de eventos como propagação de artefatos, negativas de serviços e anomalias em geral.
Extensão de Segurança para o Perfil DPWS
Authors: Mendonça Igor Thiago Marques , Fraga Joni da Silva , Dias Roberto Alexandre
Published: August 2022

Recentemente Serviços Web vêm sendo alvo de padrões e especificações visando a sua aplicação diretamente sobre dispositivos embarcados. A especificação DPWS é um exemplo de esforço neste sentido. Neste trabalho é apresentada uma proposta de extensão de um Serviço de Segurança ao modelo funcional do DPWS. Esta extensão trata de maneira independente os aspectos de segurança seguindo as definições de WS-Security e WS-SecureConversation. Este modelo estendido é aplicado em um protótipo de um sistema de gerenciamento da distribuição de energia elétrica no sentido de evidenciar a eficiência das proposições e escolhas.
Rastreabilidade de Códigos Executáveis usando Redes Neurais
Authors: Nascimento Tiago M. , Carmo Luiz F. R. C. , Boccardo Davidson R. , Machado Raphael C. , Prado Charles B.
Published: August 2022

Rastreabilidade de códigos refere-se ao mapeamento entre códigos equivalentes escritos em linguagens diferentes — inclusive linguagens de programação de alto nível e de baixo nível. No campo da Metrologia Legal, é fundamental garantir que o código binário de um software embarcado em um medidor corresponde a um código fonte do programa que foi previamente aprovado pela Autoridade Metrológica. Neste trabalho, é proposta uma nova abordagem para correlacionar códigos fonte e binário usando redes neurais artificiais. Nossa abordagem correlaciona o código fonte com o código binário utilizando-se de uma rede neural artificial alimentada pelas características do fluxo lógico do programa. Qualquer incidência de falsos positivos é um fator crítico para fins de avaliação de software. Nossa avaliação, usando exemplos de código real, mostra uma correspondência entre 62% e 90% para a rastreabilidade dos códigos binários com uma taxa de 4% de falsos positivos.
Fault Attacks against a Cellular Automata Based Stream Cipher
Authors: Carrijo José , Nascimento Anderson C. A. , Tonicelli Rafael , Alves Vinícius de Morais
Published: August 2022

This paper presents fault attacks against a cellular automata based stream cipher. A fault attack assumes that the adversary is able to physically operate the cryptographic device and insert some errors into it. As a consequence, the adversary can induce faulty results into the device and use them to recover the stored secret key. By using this approach we provide extremely efficient and practical cryptanalytic methods: by injecting n/2 + n2/32 faults we recover the n-bit secret key from a stream cipher based on cellular automaton rule 30. To the best of our knowledge this is the first application of fault attacks against cellular automata based stream ciphers.
Obtaining Efficient Fully Simulatable Oblivious Transfer from General Assumptions
Authors: David Bernardo M. , Nascimento Anderson C. A. , Tonicelli Rafael
Published: August 2022

We introduce a general construction of fully simulatable oblivious transfer based on lossy encryption. Furthermore, we extend the common definition of lossy encryption by introducing the notion of computationally lossy encryption. If the cryptosystem used is computationally lossy, our general construction yields oblivious transfer protocols with computational security for both parties. Otherwise, when regular statistically lossy cryptosystems are employed in this construction, it yields oblivious transfer protocols with statistical security for the sender. The construction introduced in this paper is realizable from rerandomizable, homomorphic and lossy cryptosystems in general. Thus, it yields specific constructions based on different assumptions, such as DDH, LWE and McEliece. Moreover, it proves the equivalence of fully simulatable oblivious transfer and lossy encryption.
Detecção de variações de malware metamórfico por meio de normalização de código e identificação de subfluxos
Authors: Cozzolino Marcelo F. , Martins Gilbert B. , Souto Eduardo , Deus Flávio E. G.
Published: August 2022

Este artigo apresenta uma metodologia capaz de identificar malware metamórficos. O código de um arquivo é submetido a um processo de normalização e subdividido em trechos de códigos (tokens) delimitados por mudanças de fluxo do programa. A combinação do identificador de cada token com os dois seguintes cria um conjunto de identificadores de fluxo, que são usados para medir a similaridades com um código de malware previamente mapeado. Os resultados obtidos mostram que a metodologia proposta é capaz de identificar com precisão a presença de códigos metamórficos.
Segurança do bit menos significativo no RSA e em curvas elípticas
Authors: Nakamura Dionathan , Terada Routo
Published: August 2022

A segurança do bit menos significativo da chave secreta no Diffie-Hellman sobre Curvas Elípticas (e da mensagem no RSA) está relacionada à segurança de toda a chave (mensagem). Neste artigo são apresentados algoritmos que conseguem inverter os criptossistemas citados fazendo uso de oráculos que predizem o LSB. Fazemos a implementação de dois desses algoritmos, identificamos parâmetros críticos e mudamos a amostragem do formato original. Com a modificação na amostragem conseguimos uma melhora nos tempos de execução.
Universally Composable Committed Oblivious Transfer With A Trusted Initializer
Authors: Pinto Adriana C. B. , David Bernardo Machado , van de Graaf Jeroen , Nascimento Anderson C. A.
Published: August 2022

Committed Oblivious Transfer (COT) is a two-party primitive that combines one-out-of-two oblivious transfer with bit commitment. In the beginning of COT, a sender is committed to bits b0, b1 and a receiver to a choice bit c. In the end, the receiver is committed to bc without learning anything about b1-c, while the sender learns nothing about c. This primitive implies secure multi-party computation assuming that a broadcast channel is available. In this paper, we introduce the first universally composable unconditionally secure committed oblivious transfer protocol based on a Trusted Initializer (TI), which pre-distributes data to the parties. Our protocol builds on simple bit commitment and oblivious transfer protocols, using XOR commitments to prove simple relations in zero-knowledge. Besides providing very high security guarantees, our protocols are significantly simpler and more efficient than previous results, since they rely on pre-computed operations distributed by the TI.
Avaliação do Classificador ARTMAP Fuzzy em redes 802.11 com Criptografia Pré-Robust Security Network (WEP e WPA)
Authors: Araújo Nelcileno , Oliveira Ruy de , Shinoda Ailton Akira , Ferreira Ed’Wilson Tavares , Nascimento Valtemir Emerêncio do
Published: August 2022

Nos últimos anos têm-se percebido um forte crescimento no uso da tecnologia sem fio 802.11 (Wireless LAN) e os mecanismos de segurança implementados pelas emendas IEEE 802.11i e IEEE 802.11w têm se mostrado pouco eficazes no combate a ataques contra a disponibilidade dos serviços da WLAN. Neste artigo avalia-se o desempenho do classificador ARTMAP Fuzzy na detecção de um grupo de ataques de negação de serviço (DoS) numa rede WLAN real com suporte a criptografia WEP e WPA. A rede neural ARTMAP Fuzzy foi escolhida pela sua capacidade de preservar o conhecimento anteriormente adquirido e adaptar-se a novos padrões de classificação. Os resultados obtidos demonstram que há a necessidade de uma metaheurística para fornecer parâmetros mais confiáveis para a execução do classificador e a seleção de atributos mais representativos do comportamento intrusivo existente nos ataques de DoS.
Ensino Remoto Emergencial da disciplina IHC Experimental: uma análise baseada na Experiência do Aprendiz
Authors: Silva Deivid Eive dos S. , Guerino Guilherme Corredato , Valentim Natasha Malveira C.
Published: August 2022

A Experiência do Aprendiz (Learner eXperience - LX) representa as interações dos estudantes nos ambientes educacionais físicos ou virtuais. Neste contexto, este artigo relata as experiências dos estudantes nas aulas de Interação Humano-Computador (IHC) Experimental no formato de Ensino Remoto Emergencial (ERE). Participaram deste estudo exploratório 36 estudantes, incluindo estudantes de graduação e pós-graduação. Este estudo buscou verificar os elementos da LX que podem ter influenciado na aprendizagem dos estudantes, como Valor, Usabilidade, Desejabilidade, Confortabilidade e Adaptabilidade. As atividades consistiram de aulas síncronas e assíncronas. Os resultados podem direcionar e apoiar futuras disciplinas no formato ERE.
Robótica Educacional: Uma Experiência de Ensino Híbrido na Formação Inicial de Acadêmicos de Licenciatura em Computação
Authors: Costa Junior Almir de O. , Rivera José Anglada
Published: August 2022

Este trabalho apresenta um relato de experiência baseada no ensino híbrido, utilizando a robótica educacional na formação inicial de acadêmicos do curso de Licenciatura em Computação. As atividades envolveram 9 alunos e foram desenvolvidas em uma disciplina optativa com carga horária de 60 horas. De modo geral, na experiência, foram utilizados o Tinkercad, o ambiente de programação em blocos Pictoblox e a plataforma de prototipagem Arduino. Ao final, pôde-se verificar que a estratégia utilizada se mostrou efetiva no desenvolvimento de algumas habilidades e competências, necessárias à formação inicial dos acadêmicos de Licenciatura em Computação.
Curricularização da Extensão no Ensino de Empreendedorismo em Computação: Interdisciplinaridade e Vivência Estudantil
Authors: Boscarioli Clodis , Rodrigues Luiz Antonio , Silva Ivonei Freitas da , Lago Sandra Mara Stocker , Meneghatti Marcelo Roger , Araújo Maria da Piedade , Caus Gabriel Delallo
Published: August 2022

O Empreendedorismo, obrigatório nas grades curriculares dos cursos de Computação no Brasil, envolve o desenvolvimento de habilidades interdisciplinares para a resolução de problemas e para o desenvolvimento de novos negócios. Tendo em vista a necessidade de adequação dos Projetos Pedagógicos de Cursos (PPC) de graduação para abrigar a curricularização da extensão sem, com isso, aumentar a carga horária total dos cursos, temos buscado formas de integrar as ações extensionistas nas disciplinas existentes. Este artigo apresenta um relato de experiência de duas edições da disciplina "Formação de Empreendedores" enquanto atividade integrada de ensino e extensão no Bacharelado em Ciência da Computação da Unioeste, campus de Cascavel, discutindo os resultados dessa experiência.
Aplicação de um Método para Ensino de Programação Orientada a Objetos por meio de Aprendizagem Significativa e Computação Física
Authors: Zanetti Humberto A. P. , Borges Marcos A. F. , Ricarte Ivan L. M.
Published: August 2022

Este artigo apresenta um relato de experiência e seus resultados sobre uma oficina de ensino de Programação Orientado a Objetos por meio de um método que utiliza premissas da Aprendizagem Significativa e Computação Física, ComFAPOO (Computação Física para Aprendizagem de Programação Orientada a Objetos). Este método propõe uma estratégia de ensino que busca amenizar as principais dificuldades de alunos iniciantes no ensino paradigma orientado a objetos. Os resultados de sua aplicação mostram que o método auxiliou os alunos participantes na compreensão de conceitos fundamentais da Programação Orientado a Objetos.
Levantamento do Estado da Arte sobre o uso da Metodologia de Repetição Espaçada no Ensino de Computação
Authors: Jacinto Afonso Serafim , Medeiros Francisco Petrônio A.
Published: August 2022

Este artigo apresenta os resultados de uma revisão sistemática da literatura (RSL) sobre o uso da metodologia de Repetição Espaçada (RE) na Educação em Computação. Foram analisados estudos primários dos anos de 2011 a 2021, resultando em 46 estudos indexados a partir da string de busca, dos quais nove foram analisados para responder às questões de pesquisa. Esta RSL confirma que a metodologia de RE, embora já seja muito estudada e aplicada no ensino de Línguas Estrangeiras e Medicina, ainda é um campo pouco explorado no que diz respeito ao ensino de Ciência da Computação. Este trabalho contribui com a identificação de lacunas de pesquisas e possibilidades de novas práticas pedagógicas no ensino de Computação.
Epidemiology of Hepatitis C Virus Infection Among High-risk Populations in Northeastern Iran
Authors: Hedayati-Moghaddam Mohammad Reza , Danaee Majid , Soltanian Hossein , Vahedi Seyed Ahmad , Mosavat Arman , Shahi Maryam , Shafaei Azam
Published: August 2022

Background: Chronic hepatitis C virus (HCV) infection affects 58 million people globally. The frequency of HCV infection in the general Iranian population is less than 0.5%; however, a concentrated epidemic was reported among people who use drugs, particularly those with a history of drug injection. Objectives: This cross-sectional study was performed to assess the prevalence of HCV infection among high-risk groups outside of prison in northeastern Iran. Methods: A total of 962 participants in Razavi Khorasan province were enrolled from 2018 to 2022. They included drug users referred to drug treatment and harm reduction centers and individuals with a history of crimes such as drug use or imprisonment who worked in a private industrial unit. Serum anti-HCV antibodies were assessed using a rapid or ELISA kit, and seroreactive samples were confirmed by single-step reverse transcriptase or qualitative real-time polymerase chain reactions. A P-value < 0.05 was considered statistically significant. Results: The mean age of 707 males and 255 females was 39.8 ± 10.2 years. Anti-HCV antibodies were detected from 129 samples (13.41%), of which 117 were available for polymerase chain reaction testing. HCV RNA was detected in 88 cases (75.2%); the total viremia rate was calculated as 9.26% (88/950). Logistic regression analysis revealed that HCV infection among drug users was significantly associated with older age (P = 0.002), being single (P = 0.009), and history of drug injection (P < 0.001) or incarceration (P = 0.04). Conclusions: The findings showed a considerably high prevalence of HCV infection among people who use drugs in northeastern Iran. To achieve the global goal of viral hepatitis elimination by 2030, we strongly recommend stricter screening and treatment of this infection among such hard-to-access populations in Iran.
Noah’s Boat and Other Missed Opportunities
Authors: Stewart Devin
Published: August 2022

This essay addresses the ways in which several of the most popular English translations of the Qurʾān treat cases in which the text draws on key biblical concepts and vocabulary. It suggests that when determining how such passages ought to be translated, one must take into account not only the meaning that fits the passage generally but also the extent to which the text reflects an intention to invoke, modify, alter, or ignore biblical precedent. In a number of cases, it is argued, many English translations adopt an anti-biblicizing translation, often a literal rendition, such as reference to the “ship” of Noah, that obscures the connection of the qurʾānic passage with biblical tradition. The adoption of a biblicizing translation, such as referring to Noah’s “ark” instead, would in many cases render tangible a connection with biblical texts that was originally intended.
Response to Devin Stewart’s 2019 IQSA Presidential Address
Authors: Lawson Todd
Published: August 2022

Devin Stewart’s discussion of English translation problems in some of the otherwise most successful or respected translations of the Qurʾān offers a timely opportunity to revisit issues that may be thought to have been sleeping for years and influencing, unbeknownst, the reading experience of those for whom the structure of the Book was already difficult enough, let alone the technical vocabulary. Some of the questions raised but not answered by Stewart, such as “Why on earth would anyone translate Noah’s ark as Noah’s ship?,” are left for his reader to contemplate. It is difficult to resist the temptation to see such translation choices as reflecting perhaps culturally determined and perhaps unwitted desires to present the Qurʾān as a text revered by aliens rather than as another stage and text in the unfolding of a specifically and quite familiar Abrahamic religiosity that it so obviously is.
Pre-Islamic Divine Name ʿsy and the Background of the Qurʾānic Jesus
Authors: Al-Jallad Ahmad , Al-Manaser Ali
Published: August 2022

This paper presents a newly discovered Safaitic inscription bearing the divine name ʿsy. It is argued that this theonym corresponds to Qurʾānic Arabic عيسى <ʿysy>, and reflects the earliest attestation of this form of Jesus’s name, likely dating to the fourth century CE, during the initial spread of Christianity to Arabia.
Fundamentos de la organización de hospitales y redes sanitarias en el Sistema Nacional de Salud
Authors: Muñoz y Ramón José María
Published: August 2022

En las últimas décadas, se han introducido grandes avances en las prestaciones sanitarias, pero la organización de los hospitales no ha cambiado al mismo ritmo. Es previsible que las demandas sociales, la evolución tecnológica y de las comunicaciones, así como los nuevos desafíos asistenciales condicionen cambios estructurales y de funcionamiento en el futuro. Se revisan los elementos comunes que condicionan el estado actual de los hospitales del Sistema Nacional de Salud y las previsiones de futuro ante una sociedad cambiante.
I Jornada Internacional de Aleitamento Materno: uma responsabilidade compartilhada
Authors: Arboit Jaqueline , Bartniski Karieli Fernanda , Zanotelli Silvana dos Santos , Gasparin Vanessa Aparecida
Published: August 2022

O Departamento de Enfermagem da Universidade do Estado de Santa Catarina (UDESC) por meio do Programa de Extensão Atenção à Saúde Materno-Infantil de Populações Imigrantes (PEASMIPI) e do Portal Colo de Mãe realizou nos dias 02 a 08 de agosto de 2021, de forma online, a I Jornada Internacional de Aleitamento Materno. O evento realizou-se de modo gratuito e aberto ao público, buscando fomentar debates entre nutrizes, acadêmicos, pesquisadores, profissionais de saúde, sobre a importância do aleitamento materno e demais eixos relacionados ao tema. O evento contou com a participação de 293 inscritos, distribuídos entre docentes, discentes e profissionais de enfermagem que se reuniram de forma remota, proporcionando a troca de saberes que fundamentam a assistência e o ensino, a fim de contribuir no conhecimento destes, com a importância de temas relacionados ao aleitamento materno e suas influências para a lactante, o lactente, as redes de apoio vinculadas a estes e a sociedade em geral. A I Jornada Internacional de Aleitamento Materno contou com a coordenação da Profª Dra Silvana dos Santos Zanotelli, apoiada por uma equipe de docentes e discentes da UDESC na organização. Contou com a participação de profissionais palestrantes nacionais e internacionais renomados e influentes na área e possibilitou a submissão de resumos em dois eixos, sendo eixo Temático 1 - Práticas de proteção e apoio ao Aleitamento Materno; e eixo Temático 2 - A produção científica em Aleitamento Materno; totalizando 35 trabalhos aprovados, que foram divididos nas modalidades E-pôster e apresentação oral, com premiação e menção honrosa para os melhores trabalhos apresentados em cada categoria. O evento contou com o apoio de diversas entidades locais e ligas acadêmicas de diversas universidades, unificando conhecimentos e discorrendo sobre a importância do incentivo e proteção ao aleitamento materno.
That only the elite should have children is a worrying argument
Authors: Msimang P M
Published: August 2022

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Artificial intelligence in healthcare: Proposals for policy development in South Africa
Authors: Naidoo S , Bottomley D , Naidoo M , Donnelly D , Thaldar D W
Published: August 2022

Despite the tremendous promise offered by artificial intelligence (AI) for healthcare in South Africa, existing policy frameworks are inadequate for encouraging innovation in this field. Practical, concrete and solution-driven policy recommendations are needed to encourage the creation and use of AI systems. This article considers five distinct problematic issues which call for policy development: (i) outdated legislation; (ii) data and algorithmic bias; (iii) the impact on the healthcare workforce; (iv) the imposition of liability dilemma; and (v) a lack of innovation and development of AI systems for healthcare in South Africa. The adoption of a national policy framework that addresses these issues directly is imperative to ensure the uptake of AI development and deployment for healthcare in a safe, responsible and regulated manner.
Biomechanics of actions in the process of studying and improving combat techniques of wrestling
Authors: Vashurina Liya Igorevna , Balashov Aleksandr Viktorovich , Voronchihin Dmitriy Vladimirovich
Published: August 2022

Biomechanics and the laws of the dynamics of translational and rotational movements are necessary for teaching fighting techniques to law enforcement officers. This is due to the fact that the acquired knowledge of biomechanics allows you to track the patterns of performing motor actions, as well as to see, feel and eliminate errors in a timely manner. Thanks to this approach, the effectiveness of combat increases. Combat fighting techniques in educational organizations of the Ministry of Internal Affairs of Russia are the main section of the educational process in the discipline of physical training. Cadets and trainees often have difficulties in mastering combat techniques of wrestling, which prevents them from fully, efficiently and effectively performing a specific technique. Students visually copy the actions performed by the teacher, which is not enough to consolidate the technique of movements in consciousness. As a result, the chances of successful fulfillment of the control standard for physical training from the section "Fighting techniques of wrestling" are reduced. This problem determines the relevance of the topic under study. Combat fighting techniques in educational organizations of the Ministry of Internal Affairs of Russia are the main section of the educational process in the discipline of physical training. This is due to the fact that the most accessible measure of influence on the offender at the moment when he is or is able to resist, from the point of view of the law, is the use of physical force. Cadets and trainees often have difficulties in mastering combat techniques of wrestling, which prevents them from fully, efficiently and effectively performing a specific technique. Students visually copy the actions performed by the teacher, which is not enough to consolidate the technique of movements in consciousness. Therefore, the importance of the acquired knowledge of the basics of biomechanics should not be underestimated, since they allow you to track the patterns of performing motor actions, as well as to see, feel and eliminate errors in a timely manner.
A Compact Planar Four-port MIMO Antenna for 28/38 GHz Millimeter-wave 5G Applications
Authors: Tadesse A. D. , Acharya O. P. , Sahu S.
Published: August 2022

This article presents a planar four-port microstrip line-fed Multiple-Input Multiple-Output (MIMO) antenna operating at 5G millimeter-wave candidate bands of 28 GHz and 38 GHz. A rectangular-shaped patch antenna is designed as a main radiator to obtain a resonance at 28 GHz. Etching of a single-element split-ring resonator (SRR) metamaterial unit cell from the basic patch radiator introduces an additional resonance band at 38 GHz. The suggested MIMO antenna is built on Rogers RT5880 substrate material with a dimension of 14 mm × 14 mm, a thickness of 0.8 mm, and a relative permittivity of 2.2.The measured results show that the antenna achieves bandwidths of 26.6-29 GHz and 37.3-39.3 GHz, whereas greater than 25 dB of port isolation between antenna elements over both bands is obtained without applying any complex decoupling structure. The antenna’s equivalent circuit diagram is presented with the help of lumped elements to characterize its electrical responses. The investigated diversity performance parameters, which result in an envelope correlation coefficient below 0.005, diversity gain of almost 10 dB, and channel capacity loss of less than 0.35 bits/s/Hz, are all found within their conventional limits. The findings show the viability of the design for millimeter-wave 5G applications.
Classification of breast cancer using a manta-ray foraging optimized transfer learning framework
Authors: Baghdadi Nadiah A. , Malki Amer , Magdy Balaha Hossam , AbdulAzeem Yousry , Badawy Mahmoud , Elhosseini Mostafa
Published: August 2022

Due to its high prevalence and wide dissemination, breast cancer is a particularly dangerous disease. Breast cancer survival chances can be improved by early detection and diagnosis. For medical image analyzers, diagnosing is tough, time-consuming, routine, and repetitive. Medical image analysis could be a useful method for detecting such a disease. Recently, artificial intelligence technology has been utilized to help radiologists identify breast cancer more rapidly and reliably. Convolutional neural networks, among other technologies, are promising medical image recognition and classification tools. This study proposes a framework for automatic and reliable breast cancer classification based on histological and ultrasound data. The system is built on CNN and employs transfer learning technology and metaheuristic optimization. The Manta Ray Foraging Optimization (MRFO) approach is deployed to improve the framework’s adaptability. Using the Breast Cancer Dataset (two classes) and the Breast Ultrasound Dataset (three-classes), eight modern pre-trained CNN architectures are examined to apply the transfer learning technique. The framework uses MRFO to improve the performance of CNN architectures by optimizing their hyperparameters. Extensive experiments have recorded performance parameters, including accuracy, AUC, precision, F1-score, sensitivity, dice, recall, IoU, and cosine similarity. The proposed framework scored 97.73% on histopathological data and 99.01% on ultrasound data in terms of accuracy. The experimental results show that the proposed framework is superior to other state-of-the-art approaches in the literature review.
Clinicopathological Concordance of Paediatric Laparoscopic Cholecystectomy at a Single Centre in India
Authors: Mufti Shagufta Tahir , Parashar Bharti
Published: August 2022

Introduction: The overall incidence of cholecystitis in children appears to be increasing although the exact frequency of acute and chronic cholecystitis among children in India or worldwide remains unknown. The frequency of paediatric cholecystitis has proportionally increased with the childhood obesity and intake of habitual fatty food. Aim: To present the histopathological concordance of Laparoscopic Cholecystectomy (LC) performed among children for a clinical diagnosis of Gallbladder (GB) disease. Materials and Methods: A single centre retrospective study was performed including histopathological and relevant clinical data of all paediatric LC performed at Career Institute Of Medical Sciences and Hospital, Lucknow, Uttar Pradesh, India, between January 2019 to January 2022. Paediatric patients who had undergone LC in the designated time period for a clinical diagnosis of cholelithiasis and/or inflammatory GB disease with classical signs of inflammation were included. Study population with LC procedure submitted for histological evaluation were identified by performing an electronic search through the archives of Department of Pathology, Career Institute of Medical Sciences and Hospital, Lucknow, Uttar Pradesh, India, followed by a manual review of GB specimens, histopathology slides and reports. Results: Among 265 patients who underwent LC during this period, there were 62 (23.4%) children. The average age of presentation was 13 years (range 5-18 years), Forty nine (79%) were girls and 13 (21%) were boys. The clinical diagnosis for which paediatric LCs were performed were cholelithiasis among 51% and cholecystitis among 48%. On histopathological concordance these turned out to be chronic cholecystitis among 98.4% children among which 51% were associated with cholelithiasis. Calculous cholecystitis was more frequent than acalculous cholecystitis. Chronic cholecystitis with cholelithiasis and cholesterolosis was more frequent among adolescent girls. Conclusion: This study suggests that chronic cholecystitis accounts for the majority of inflammatory diseases among children undergoing LC for a GB disease and may or may not be associated with cholelithiasis. Chronic cholecystitis with cholelithiasis and cholesterolosis seem more frequent among adolescent girls.
An Observational Study of Head and Neck Squamous Carcinomas from a Tertiary Cancer Centre of Marathwada Region, Maharashtra, India
Authors: Ganorkar Shweta Dattakumar , Ajmera Rakeshkumar Jaikumar , Kokandakar Hemant Ramchandrarao , Nilkanth Somesh Prakash , Khadilkar Hrishikesh Arvindrao
Published: August 2022

Introduction: Head and neck cancer constitutes about one third of all the cancers in India. Head and neck squamous carcinoma is an important cause of morbidity and mortality with variability in geographical location, age, gender, habits, socio-economic status. Aim: To identify changing trends in age, gender, sites involved and histopathological grades of malignant and analyse potentially malignant lesions in head and neck region in Marathwada region of Maharashtra, India. Materials and Methods: This observational retrospective descriptive study was carried out in tertiary cancer hospital in Marathwada region of Maharashtra, India, over a period of two years which included 1008 cases. All the biopsy cases and biopsies obtained under ultrasound and also to computed tomography guidance showing invasive squamous carcinoma and potentially malignant lesions of head and neck region with their histological analysis were studied. Relevant clinical and demographic details were noted and statistical analysis was done and results were explained in tables and percentage. Results: Total 1008 cases were studied. The maximum number of cases were in the age group of 51-60 years. Males were more affected than females. The buccal mucosa (29.5%) was most common site affected and maxilla (0.8%) the least. Histologically invasive tumour were well differentiated (17.65%), moderately differentiated (79.93%) and poorly differentiated (2.42%). Rest lesions were distributed in following categories: carcinoma- in-situ, verrucous neoplasm, dysplasia, atypical squamous proliferation, leukoplakia, pseudoepitheliomatous hyperplasia. Age wise, site wise, gender wise distribution of cases and association between site of lesions and gender and grade of tumour were studied. Conclusion: The associated risk factors, lifestyle patterns, habits, addictions and geographic and demographic factors, socio-economic status and evolving Human Papilloma Virus (HPV) association and pathogenesis are still topic of debate where much progress is still to be made. It deserves closer study. Apart from invasive squamous malignancies, precursor lesions if investigated at an earliest along with increasing awareness among population in relation to healthy lifestyle changes, habits followed by thorough clinical examination and histopathology and HPV association, possibility of planning specific strategies of prevention, diagnosis and treatment help reduce morbidity and mortality.
A Clinico-pathological Study of Papulonodular Lesions of Skin in a Rural Hospital Setup
Authors: Rubina . , Parthibhan Raja , Sujitha R , Dongapure Savita
Published: August 2022

Introduction: Skin disorders are a common cause of morbidity in our country, High prevelance of dermatological lesions is seen in tropical countries. The spectrum of lesions varies significantly depending on the geographical region, so accurate diagnosis is of utmost importance as treatment is varied for different skin disorders presenting with similar clinical findings. Aim: To study the spectrum of papulonodular lesions of skin and to evaluate concordance between the clinical and histopathological diagnosis of papulonodular skin lesions. Materials and Methods: This prospective cross-sectional study was conducted in Department of Pathology at MVJ Medical College and Research Hospital, Hoskote, Karnataka, India, from October 2017 to September 2019. The study included 100 skin biopsies that had clinically presented as papules, nodules and as papulonodular lesions. Based on the histopathological findings the lesions were grouped according to aetiology and the final histopathological diagnosis was compared with the clinical diagnosis offered. The slides were stained with Haematoxylin and Eosin, examined under a microscope and findings were noted. Special stains on the tissue sections like Zeihl-Neelson and Fite Faraco were used when required. The qualitative characteristics presented using frequency and percentages, quantitative variables presented using Mean±SD. Results: In the 100 biopsies studied 77 cases were papular, 20 cases were nodular and 3 cases were both papular and nodular. The lesions were common in males (54%) with 67% being in the 21-50 years age group. Lesions were categorised into five aetiological groups based on histology i.e, non infectious papulosquamous (25%), eczematous (23%, Inflammatory (20%), Infectious (11%) and lastly neoplastic (21%). A clinico- pathological association of 79% was observed with differences mainly observed in the eczematous group and tumours. Conclusion: This study highlights the various common skin disorders that can present as papulonodular lesions and the significance of histopathological examination and clinico- pathological association for early diagnosis and management of skin lesions.
Genetic Variability and Character Associations of Faba Bean (Vicia faba L.) Genotypes, Southeastern Ethiopia
Authors: Kebede Gizachew Yilma , Haile Gebeyaw Achenef , Abo Temesgen
Published: August 2022

Faba bean is an important legume crop because of its high‐yield potential and nutrition-dense grains. This study was conducted to determine variability, heritability, and correlation between yield and yield components in 22 faba bean germplasm accession. The trial was conducted with RCBD design across two locations in the 2015/16 main cropping season. The ANOVA result showed significant variation among genotypes with p<0.05. The genotype by environmental interaction result showed significant difference p<0.05 on chocolate spot among genotypes in the trial. The minimum grain yield was recorded at 2380.8kgha-1 from genotype 17 and the maximum grain yield was recorded from genotype 5(5598.1kgha-1). The genotypic and phenotypic coefficient of variation ranged from 2.91 to 15.64 and 3.23 to 23.42 respectively. Moderate phenotypic and genotypic coefficients of variation were recorded from grain yield and thousand seed weight, while days to maturity, plant height, and the number of seeds per pod recorded lower phenotypic and genotypic coefficients of variation. Days to 50% flowering, days to maturity, and thousand seed weights were recorded as higher estimates of heritability. Thousand seed weights showed higher estimate of heritability along with high genetic advance. For the future breeding strategies, this information helps the researcher to improve faba bean genotypes.
Effect of Seed Sowing Time and Nutrients on the Growth and Yield of Fennel (Foeniculum vulgare)
Authors: Siddika Most. Jakia , Khatun Khaleda , Mostarin Tahmina , Sarkar Md. Imran , Alam Md. Murshedul , Ferdousi Aysha Jannatul , Hasan Md. Jahid , Afroz Sumiya
Published: August 2022

In order to investigate the influence of seed sowing time and nutrients on the growth and yield of fennel, an experiment based on Randomized Complete Block Design with twelve treatments and three replications at the Horticulture Farm of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka during October, 2019 to July, 2020 season was carried out. Fennel variety ‘BARI Mouri-1’ was used as planting material in this study. The experiment consisted of two factors: Factors-A: Sowing time (4 levels): S1 = First week of November, S2 = Last week of November, S3 = First week of December and S4 = Last week of December; Factors-B: Nutrients (4 levels): T0 = Control, T1 = Vermicompost (2.50 t ha-1), T2 = NPK (N80P50K60 kg ha-1) and T3 = Vermicompost (2.50 t ha-1) + NPK (N80P50K60 kg ha-1). The result revealed that in case of seed sowing time S2 (Last week of November) and in case of different level of nutrients T3  [Vermicompost (2.50 t ha⁻¹) + NPK (N80P50K60 kg ha⁻¹)] treatment exhibited its superiority to other treatments in terms of plant height, number of leaves , number of primary branches, number of secondary branches, number of umbel per plant, number of umbellet per umbel, no. of days to first flowering, seed weight per umbel, weight of 1000-seeds and seed weight per ha. Significantly the highest seed yield (2.34t ha⁻¹) was found in S2T3 [(Last week of November with Vermicompost (2.50 t ha⁻¹) + NPK (N80P50K60 kg ha⁻¹)] interaction due to the tallest plant at harvest (117.59 cm), number of leaves (15.07), number of primary branches (7.62),  number of secondary branches (20.18),  minimum days to first flower (82.60), maximum number of umbellet umbel⁻¹ (27.72), number of umbel plant⁻¹ (26.75), maximum weight of 1000-seeds (6.38 g), maximum seed weight umbel⁻¹ (2.09 g).
A Review on Integrated Weed Management in Transplanted Rice
Authors: Yakadri M. , Suvidh M. Sai , Vaishnav Sheri
Published: August 2022

Rice plays a pivotal role in agrarian economy of the most of the Asian and South east Asian nations particularly India. Transplanted rice crop suffers much from biotic production constraints among which weed competition is the important one. The reduction in paddy yield ranges from 9-51 per cent due to infestation of wide range of weed species viz. grasses, sedges and broadleaved weeds. The severity of yield loss is aggravated further when weed infestation coincides with critical period of rice growth depriving it from moisture, nutrients, sunlight and acting as alternate host to some pests and diseases. The cost of weed management in transplanted rice is higher than other operations due to exorbitant wage rate combining with low efficiency moreover due to scarcity of labour during peak period, weeding operation has become a cumbersome, time consuming and costly affair for rice farmers. Therefore, herbicide technology offers a mutual inclusive method of selective and economical control of weeds right from the beginning and forms a major component of integrated weed management of rice farming for reaping bumper yield.
Comparative Efficacy and Economics of Certain Chemicals and Biopesticides against Podborer, Helicoverpa armigera (Hubner) in Chickpea at Naini, Prayagraj, India
Authors: Anil Mohite Prajakta , Kumar Ashwani
Published: August 2022

An experiment was conducted at the research plot of the Department of Agricultural Entomology at Central Research Farm, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj during the rabi season of 2021.The field was laid in randomised block design (RBD) with seven treatments and one controlled plot. The Mean larval population plant was taken day before and 3, 7 and 14 days after each spray. All the insecticides tested significally reduced the pest infestation compared to control. The results obtained based on pest population, grain yield and B: C ratio are as follows, T4 Spinosad 45% SC is most effective treatment against gram pod borer of Mean larval population producing maximum yield and recorded highest Cost-Benefit ratio compared to other treatments. While T1 Chlorantraniliprole 18.5% sc, T2 Spinetoram 11.7EC, T3 Flubendamide 39.35% SC, T4 Spinosad 45% SC,T5 Bacillus thuringiensis has shown average results has proved to be least effective chemicals. T6 Beauveria bassiana and T7 Metarhizium anisopilae found to be least effective in managing Helicoverpa armigera. When cost benefit ratio was worked out, interesting result was achieved. Among the treatment studied, the best and most economical treatment was Spinosad 45% SC (1:3.98), Spinetoram 11.7EC (1:3.95), followed by Chlorantraniliprole 18.5% sc (1:3.82), Flubendamide 39.35% SC (1:3.73), Bacillus thuringiensis (1:3.21), and Beauveria bassiana (1:2.96), The lowest cost benefit ratio was recorded in Metarhiziun anisopilae (1:2.80) when compared to Control (1:1.95).
Biochemical Impact Inflicted by Aphid Induced Urdbean Leaf Crinkle Disease (ULCD) Infection on Different Blackgram Genotypes
Authors: Bala Khaviya , Shanthi M. , Murugan M. , Srinivasan G. , Kalpana K. , Mini M. L.
Published: August 2022

Aims: To investigate the variations in total protein content and anti-oxidative enzymes in blackgram genotypes showing various levels of resistance against aphid-mediated Urdbean leaf crinkle disease (ULCD).

Study Design: Completely Randomized Design.

Place and Duration of Study: The studies were carried out at the Insectary belonging to the Department of Agricultural Entomology and the Centre of Innovation at Agricultural College and Research Institute, Madurai, Tamil Nadu, India in January 2021.

Methodology: The research was conducted on seven blackgram genotypes exhibiting different levels of resistance to ULCD. A pot culture study was established and the test plants were subjected for inoculation of urdbean leaf crinkle virus (ULCV) via feeding by 10 viruliferous Aphis craccivora adults/plant. The alterations in the total protein content, superdioxide mutase (SOD), catalase (CAT) and peroxidase (PO) activity was estimated using spectrophotometric methods  in comparison to healthy genotypes on 0, 15 and 30 days after inoculation (DAI).

Results: No discernible increase in the levels of protein content was seen in either of ULCV inoculated or un-inoculated genotypes on the day of the inoculation. At post inoculation, leaf protein content of ULCV highly susceptible genotypes (VBN 8 and T9) was only marginally higher than that of resistant genotypes (CO 5 and CO 6), whereas in moderately resistant genotype (APK 1)  it had only slightly increased. The SOD activity showed only a non-significant drop between inoculated versus un-inoculated plant leaves in highly susceptible VBN 8 and T9 genotypes. At 15 and 30 days post inoculation, a significantly less SOD activity was observed, but PO inversely increased compared to the latter under ULCV inoculated versus un-inoculated conditions in ULCV resistant CO 5 and CO 6 genotypes. While the susceptible ADT 5 and ADT 6 and highly susceptible VBN 8 and T9 genotypes did not show any significant increase in PO levels between inoculated versus un-inoculated conditions. Interestingly, ULCV inoculation considerably decreased the reduced CAT activity both in resistant and susceptible genotypes, when compared to the un-inoculated healthy ones.

Conclusion: Fluctuations in the levels of antioxidant enzymes as well as the total protein content was significant only at 15 Days post inoculation. The ULCV infection tends to increase the total protein content in inoculated plants compared to un-inoculated plants. The aphid transmission of ULCV infection in different blackgram genotypes inflicted considerable increase in PO while decrease in SOD and CAT activities in resistant CO 5 and CO 6 genotypes.
Isolation, Screening and Identification of Herbicidal Actinomycetes from Rhizosphere Soils
Authors: Nivashini R. Sanju , Gomathi V. , Maryi J. Kavitha
Published: August 2022

Aim: Current study investigates the activity of rhizosphere microflora against common weeds of Coccinia grandis. Soil actinomycetes known for their potential antimicrobial and other secondary metabolites were taken for the study.

Study Design: CRD.

Place and Duration of Study: Department of Agricultural Microbiology, Tamil Nadu Agricultural University (TNAU), between November to December 2021.

Methodology: Actinomycetes were isolated from rhizosphere soils collected from the western zone of Tamil Nadu (Ooty, Western Ghats, Tirupur, Erode and Coimbatore) using different media (KKA, SCA, HV & LMSA). Their morphological characterization was done by following standard protocol. The isolates were screened based on their herbicidal activity against Trianthema portulacastrum. In vitro seed germination assay (pre-emergence) was followed to identify potential actinomycetes.

Results: Thirty actinomycetes isolates were obtained from different locations in Tamil Nadu using four different media and their morphological characterization was done. Most of them are creamy white, grey, white and some of them were producing pigments. All the isolates showed positive for Gram’s reaction.

Conclusion: Six efficient isolates were identified in the preliminary screening of weed seed germination. Further, the isolates will be studied at the field level.