bluuebunny/crossref_metadata_2025 huggingface dataset:
The prognostic relevance of 14-3-3 expression in cancers: a meta-analysis
Authors: Caihong Li  , Honglan Zhu  , Changlu Liu  , Ya Liu  , Ting Huang  , Daishun Liu
Published: February 2021

AbstractObjective: A number of recent clinical studies have identified a relationship between elevated expressions of 14-3-3 and poorer patient prognosis in the context of several cancers. The present meta-analysis was therefore conducted to gain an enhanced understanding of the prognostic importance of 14-3-3 levels in cancer patients. Methods: Two reviewers independently systematically reviewed the Web of Science, Embase, and PubMed databases to identify published, suitable studies through October 2019. The correlation between the level of 14-3-3 and cancer patient survival were assessed based upon pooled HR (hazard ratios) and 95% CI (confidence intervals) derived from chosen studies. Results: In total we were able to identify 22 eligible studies that had enrolled 2676 patients in the present meta-analysis. Assessment of these studies revealed that elevated 14-3-3 level correlated significantly with poorer OS (overall survival) (HR : 1.93, 95% CI : 1.42-2.61) in cancer patients. This was true even when studies were analyzed in subgroups according to tumor type, sample size, analysis type, and method of HR determination. With respect to disease-free survival (DFS), the pooled HR for cancer patients expressing high levels of 14-3-3 was 1.89 (95% CI: 1.56-2.30). Patients with elevated 14-3-3 expression also exhibited reduced CSS (cancer-specific survival) (HR: 3.47, 95% CI: 2.12-5.69).Conclusions: The outcomes indicate that higher level of 14-3-3 correlates with poorer patient prognosis in a range of cancer types.Keywords: Meta-analysis, Prognosis, 14-3-3 Proteins C
Continuous...
Selected Stories Containing Ethics and Counsel from Cevâhir-i Mültekata
Authors: Yilmaz Fatih , SHAREEF Mohammed Ali
Published: February 2021

The work named Cevâhir-i Mültekata by the poet, clerk and scholar Mehmed Lebîb Efendi, one of the 19th century Ottoman statesmen, is one of the important works belonging to the story genre of Classical Turkish Literature. Compiled and brought together from Arabic, Persian and Turkish works, the work presents a rich universe of wisdom with scholars, Sufis, poets, statesmen and personalities who have left behind unique stories. In the first part of this article, information about the life, literary personality, works and story genre of Mehmed Lebîb Efendi, one of the 19th century Ottoman statesmen, scribe, scholar and poet is presented. In the second part, information about the method, universe and sample of the research is given, and in the part of data collection and analysis, information about the relevant literature research and transcription properties is presented. In the third chapter, the original Ottoman texts, transcriptions and Turkish meanings of eleven selected stories on ethics and advice are given along with the language and narrative features of the work named Cevâhir-i Mültekata in the findings and interpretations section. In this context, information was given about the language and narrative features of the stories. In the conclusion and suggestions section, information about the literary and scientific values ​​and importance of the selected stories determined to draw the importance of the work named Cevâhir-i Mültekata is presented.
Poets and Intellectuals who Affected Language Literature and Social Lives of Ahiska Turks in Kazakhstan
Authors: Durmuş Karcı
Published: February 2021

The Ahiska region and the Caucasus are known as an important place for the life and protection of the Turkish and Islamic culture. The Ahiska region has attracted attention with distinguished poets and intellectuals. Ahiska Turks have managed to survive nationally, especially by bringing the tradition of minstrelsy to Kazakhstan. The masters of speech, called "The Minstrel" in the past, and nowadays called “The Poets”, played an important role to provide the national and spiritual needs of the people with their written or spoken poems. It is a vital issue in minority communities to unite around a core element. Language and culture come first among these elements. For this reason, the intellectuals and poets of Ahiska are important as they ensured this cohesion in the society and transferred the old accumulations to the next generation. Those poets and intellectuals with their writings have made great service in the society in terms of the homesickness and national unity of the Ahiska Turks of Kazakhstan. Within the scope of qualitative research, the data were collected by field study. The data collected in the field was interpreted with content analysis by filing. According to the findings, the books, the associations and the social activities by the poets and intellectuals of Ahiska did help the society to look to the future with confidence. It is understood that, with literary and cultural resources, Ahiska Turks made great efforts to unite around a common purpose.
IMPACTO DO EXERCÍCIO NA QUALIDADE DE VIDA EM ADOLESCENTES ASMÁTICOS: UMA REVISÃO DE LITERATURA
Authors: UCHÔA TIAGO DE ARAÚJO
Published: February 2021

Introdução: A asma é uma doença crônica multifatorial caracterizada pela limitação variável do fluxo de ar e inflamação das vias aéreas inferiores, que acarretam sintomas respiratórios como tosse, chiado e falta de ar. O desenvolvimento e a manutenção dos sintomas resultam de uma complexa interação entre fatores específicos e genéticos, estudos comparativos de níveis de atividade física entre jovens asmáticos e não asmáticos não apresentam resultados similares. Objetivo: Definir, identificar e realizar uma revisão de literatura sobre o impacto de exercício na qualidade de vida em adolescentes asmáticos. Metodologia: Este estudo é uma revisão de literatura realizada através de pesquisas nas bases de dados eletrônicas SCIELO, PUBMED e GOOGLE ACADÊMICO utilizando operadores booleanos “AND”, “NOT” e “OR”. Resultados: Foram selecionados 10 artigos, todos de língua portuguesa, estudo em adolescentes entre idades variadas de 12 a 17 anos. Conclusão: Concluímos que adolescentes asmáticos apresentam baixa tolerância ao exercício físico, com elevado risco a desenvolver obesidade, porém devem ser estimulados da mesma maneira que os não asmáticos, pois ambos adquirem dos mesmos benefícios.
O IMPACTO DA PANDEMIA DO NOVO CORONAVÍRUS NA JORNADA DE TRABALHO DOS PROFISSIONAIS DE PUBLICIDADE E PROPAGANDA
Authors: Severo Noronha Josiene , Carrer Davi
Published: February 2021

Durante a pandemia do novo coronavírus, o setor de Publicidade e Propaganda precisou se adequar para realizar o seu trabalho em home office. Saber qual foi a realidade dos profissionais devido às mudanças, quais foram as adaptações que tiveram que enfrentar, os impactos em seus cotidianos e se esse sistema foi apenas momentâneo devido à pandemia ou se pode se tornar uma prática constante nas agências de publicidade, são os objetivos deste artigo. Para isso, foram abordados a relação de trabalho home office antes e durante a pandemia, a estrutura de uma agência de Publicidade e quais vantagens e desvantagens da implementação do home office, tanto para os colaboradores quanto para as agências e o funcionamento do mercado e jornada de trabalho nas organizações, a fim de entender quais meios de trabalho podem ser adaptados para a realidade dos profissionais de comunicação. Foi realizado, também, uma pesquisa com alguns colaboradores que trabalham em agências de Publicidade de Santa Catarina, dando ênfase em perguntas que abordaram a implementação do home office durante a pandemia. Baseado nas informações coletadas, verificou-se que o impacto profissional, pessoal e emocional das mudanças bruscas geradas pela pandemia foram fatores que pesaram para que o home office e jornadas de trabalho alternativas em momentos de crise devam ser melhor avaliados para uma adequação que evite gerar dificuldades emocionais aos colaboradores, principalmente em momentos de estresse, ansiedade e incertezas, como foi o caso da pandemia.
UMA ANÁLISE DA INTERFACE DE SISTEMAS ERP ONLINE
Authors: Serra Torrão Joana Margarida , Frota de Menezes Vasconcelos Roberto Luiz , Sousa e Silva Iury
Published: February 2021

A adoção de um sistema ERP permite auxiliar na integração dos processos de gestão das empresas. No entanto, é difícil escolher que sistema se adapta melhor às necessidades de cada empresa, devido à ampla variedade de sistemas ERP disponíveis no mercado e aos custos elevados com infraestrutura e capacitação dos profissionais. Sendo assim, este artigo visa apresentar possíveis sistemas ERP online que permitam além de diminuir os investimentos das empresas, facilitar o acesso às informações sobretudo nas empresas do setor industrial, que precisam além dos módulos básicos, como compras e estoque, o módulo de planejamento e controle da produção.
OTIMIZAÇÃO DO MÉTODO DISC DE SELEÇÃO DE PESSOAS BASEADA EM ALGORITMOS GENÉTICOS E NAÏVE BAYES: UM ESTUDO DE CASO EM EMPRESA DO “SISTEMA S” DO PARANÁ
Authors: Pereira Adriano
Published: February 2021

Para auxiliar no processo de recrutamento e seleção de pessoal, as empresas se utilizam de diversos recursos para avaliar qual é a melhor opção dentre os candidatos disponíveis e dispostos a preencher a vaga oferecida. Um tipo de ferramenta utilizada na seleção de pessoal é o teste de perfil, que tem como finalidade indicar se o candidato em análise dispõe do perfil que a empresa necessita para a execução de determinado trabalho. Considerando o exposto, o presente estudo analisou um dos métodos de análise de perfil, mais especificamente a DISC, que é um dos métodos mais usadas em processos de seleção no Brasil. A utilização frequente deste método e a falta de estudos sobre sua real eficácia oportunizam estudos sobre este tema. A abordagem metodológica partiu de uma revisão bibliográfica sobre o tema, seguida pela aplicação do método DISC em um grupo de indivíduos participantes de um programa de desenvolvimento de lideranças em uma empresa do “sistema S”. Posteriormente, o mesmo grupo de indivíduos foi classificado por seus gestores dentro dos mesmos perfis adotados pelo método DISC. A comparação entre ambas as análises servem como base para validar se a método está retratando a percepção dos gestores sobre o comportamento do candidato analisado e vice-versa. Finalmente, os dados gerados nas etapas anteriores foram submetidos a algoritmos de mineração de dados para avaliação da capacidade preditiva do algoritmo Naïve Bayes na classificação dos dados.
OTIMIZAÇÃO DO CUSTO DE PRODUÇÃO DO CAFÉ UTILIZANDO ALGORITMO GENÉTICO
Authors: Costa Pereira Diogo
Published: February 2021

A bebida café é uma das mais conhecidas mundialmente, e para algumas pessoas é de suma importância o seu uso no cotidiano. Além disso, o café possui um enorme conglomerado de atores envolvidos, como cooperativas, armazéns, comercio internacional, produtores entre outros, e com isso se torna um produto bastante competitivo no mercado. Este trabalho objetivou estudar o emprego dos algoritmos genéticos como forma de otimização da produção cafeeira e comparar os seus resultados obtidos com um estudo base que utiliza o mesmo modelo matemático como forma de avaliação. Os resultados encontrados neste estudo foram bem satisfatórios, e quando comparados com o estudo base, comprovou se sua eficácia.
AMBIENTES VIRTUAIS DE APRENDIZAGEM: LIMITES E POSSIBILIDADES PARA UTILIZAÇÃO NO ENSINO MÉDIO
Authors: De Jesus da Silva Claudinete
Published: February 2021

RESUMO

Ambiente Virtual de Aprendizagem (AVA) é todo o espaço que veicula conteúdos por intermédio das mídias tecnológicas com as comunicações síncrona e assíncrona entre os participantes das modalidades à distância, também denominado de ciberespaço. Este artigo tem como objetivo reconhecer o AVA e seu conjunto de mídias como objeto dialógico na sala de aula, discutindo formações ao docente, qual é um dos grandes desafios para o manuseio de recursos tecnológicos, principalmente no que tange a proposta do ambiente virtual por intermédio da Educação a Distância (EaD) como mediação no processo de ensino e aprendizagem no ensino médio. O estudo se refere a uma pesquisa do tipo bibliográfica descritiva com abordagem qualitativa. As mudanças educativas exigem do educador uma nova postura e é de sua competência ter fluência digital e dominar com eficiência as novas ferramentas digitais educacionais adquirindo uma prática pedagógica inovadora dinamizando a aprendizagem e colaborando na construção de cidadãos críticos e reflexivos através de formações pedagógico-tecnológicas contínuas. Observou-se que o potencial transformador das diferentes tecnologias, materializadas em dispositivos e plataformas variadas enfrentam resistência por parte dos sujeitos/autores, alunos e professores. Ambos necessitam está capacitado frente às novas mudanças educacionais com a flexibilidade de aprender e ensinar compartilhando materiais de aprendizado. Esta pesquisa pretende fazer o leitor reconhecer a tecnologia como aliada da educação geradora de integração social, cabendo solucionar os limites existentes para que assim usufrua das várias possibilidades que há na usabilidade do AVA.

Palavras-chave: Ambientes Virtuais de Aprendizagem. Formação docente. Coaprendizagem. Ensino Médio.
Editorial
Authors: Castillo Cevallos Jorge Luis
Published: February 2021

Los últimos tiempos nos han hecho ver una gran transformación del mundo. Con la llegada del internet y el avance de las comunicaciones ha sido posible que todo esté más cerca a nosotros. La globalización se hace cada vez más evidente y esta también ha tocado a las ciencias de la salud y por cierto, a la Odontología Pediátrica. El conocimiento se difunde con más rápidez, y las personas que practican la especialidad llegan a entablar relaciones más cercanas a través del internet, los congresos y otras formas de comunicación.
Eficacia antibacteriana de dos enjuages bucales (Triclosan y cloruro de cetilpiridinio) sobre streptococos orales
Authors: Estela Enrique , Ponce Cecilia
Published: February 2021

El objetivo de este trabajo fue evaluar la actividad antimicrobiana de dos enjuagues bucales sobre streptococcus orales. Material y métodos: La investigación realizada fue de tipo clínico, prospectivo y longitudinal en un total de 45 pacientes de ambos sexos cuyas edades oscilaron entre 21 y 35 años de edad. Los pacientes fueron asignados aleatoriamente en tres grupos; el primero que recibió colutorios de cloruro de cetilpiridinio, el segundo que recibió colutorios de triclosán y el tercero que fue consignado como grupo-control (colutorios con agua). Previo al uso del enjuague bucal se realizó una encuesta a la totalidad de pacientes con respecto a los hábitos básicos de higiene bucal y un odontograma en el que se determinó el riesgo de caries de los sujetos incluidos en el estudio. Así mismo se realizó un recuento de colonias de streptococos orales en una muestra de saliva inicial de cada paciente. Después del uso del colutorio respectivo se realizó un nuevo recuento de colonias de streptococos, cuyos resultados fueron contrastados con la muestra inicial.
Los resultados mostraron que el uso de triclosán o cloruro de cetilpiridinio reducen significativamente el recuento de colonias de streptococos orales. La reducción media en el recuento de streptococos fue 146,200 UFC/ml en los pacientes que usaron triclosán y 113,670 UFC/ml en los pacientes que utilizaron cloruro de cetilpiridinio. Además, se halló una asociación significativa entre el tipo de saliva, el número de superficies de caries y el recuento inicial de colonias de streptococos. (p<0.05). Conclusiones: Se concluyó en la verificación experimental acerca de la mayor eficacia que presentó el colutorio de triclosán frente al colutorio de cloruro de cetilpiridinio.
Evaluación de la ansiedad y miedo en niños escolares en la consulta odontopediátrica
Authors: Marcano Aurora A , Figueredo A.M. , Orozco G
Published: February 2021

El miedo y la ansiedad han sido reconocidos como los principales motivos que dificultan la atención del niño en odontología, por lo cual se ha propuesto el uso de instrumentos de evaluación, para conocer los valores de éstos en pacientes odontopediátricos. Son pocas las investigaciones realizadas sobre este tema en Latinoamérica, a pesar de su relevancia. Objetivo: Evaluar los niveles de ansiedad y miedo dental infantil según la edad en niños que acudieron al servicio de Odontopediatría de la Facultad de Odontología Universidad de Carabobo. Material y Métodos: El diseño utilizado fue no experimental y transeccional de tipo descriptivo y correlacional. Se consideró una muestra de 120 escolares, a quienes se les aplicó la Escala de Ansiedad de Corah, Escala de evaluación de miedos dentales y Test de dibujos de Venham. Resultados: El 89,17% de los niños, presentaron ansiedad según el Test de dibujos de Venham, mientras la Escala de Ansiedad de Corah evidenció ansiedad en un 80,8%, arrojando a los 6 años de edad un nivel de ansiedad alto con un 20%, destacando en la Escala de evaluación de miedos dentales un porcentaje de 70,9%, donde se tuvo que a los 6, 7 y 8 años destacó un nivel de miedo dental alto entre el 16-22% respectivamente. Conclusiones: Los niveles de miedo y ansiedad dental infantil disminuyeron conforme avanza la edad, expresándose a los 6 años en mayor porcentaje, en esta investigación las ilustraciones hechas por los pacientes describieron niveles de ansiedad moderados y altos en un 76%.
Estado actual de la odontopediatría en la República Mexicana
Authors: Huitzil-Muñóz Enrique E , García-Damián Samantha Abril , Sol-Gamboa María Guadalupe
Published: February 2021

La odontología pediátrica satisface un propósito muy especial con respecto de las especialidades odontológicas orientada a la prevención y curación de las enfermedades del sistema estomatognático durante la infancia y considerada como una especialidad muy completa y relativamente nueva se realiza una revisión acerca de la historia de la odontología pedíatrica en el mundo y en especial en México, recopilando información importante acerca de las instituciones universitarias que cuentan en su curricula con la especialidad, certificación y zonas de ubicación en la República Mexicana. Conclusiones: De acuerdo a las regiones de la República Mexicana en las que se encuentran ubicados los diversos posgrados, se concluye que de un total de 30 universidades que cuentan con la especialidad o maestría en odontopediatría, existen 7 en la denominada región centro y golfo y 6 en la región México D.F., estos datos concuerdan con el elevado número de habitantes que habitan esas regiones y que necesitan atención odontopediátrica cubriendo así la alta demanda del servicio por parte de los odontólogos posgraduados egresados.
Non-Inclusive Tribal Workforce Participation in Urban Spaces: A Case Study of Jharkhand
Authors:   Indira Gandhi National Open University, New Delhi, Kumar Bipin , Baraik Vijay Kumar ,   Indira Gandhi National Open University, New Delhi
Published: February 2021

Tribals, as indigenous communities, have always been subject to neglect and marginalisation. The non-inclusive economic mobility is the enduring legacy of ethnic segregations and discriminations. In the development framework, their inclusion into the fast-urbanizing urban spaces is considerably an unexplored question. In this backdrop, the paper looks at tribals’ economic mobility in the urban spaces of Jharkhand through occupational classes. The paper is based on the 21-fold industrial classification provided in B-Series tables by Census of India, 2011. It uses a simple statistical method to analyse the occupational structure, sectoral participation and economic mobility. The paper portrays an assorted picture, inapt to the claim of an inclusive development model. The tribals have hardly been successful in catching the neo-liberal market-led economic opportunities, as the most developed urban centres are barely in tandem with the higher workforce participation in secondary and tertiary sectors; especially in the formal sectors. The other contrasting scenario is the least developed urban spaces have a higher level of tribal workforce participation in the tertiary sector than their most developed counterparts.
Socio-Economic conditions of women under Saansad Adarsh Gram Yojana: A case study of Jayapurvillage of Arajiline Block, District Varanasi
Authors:   Department of Geography, Institute of Science, B.H.U. Varanasi, Sharma Abhilasha , Singh Suman ,   Department of Geography, Institute of Science, B.H.U. Varanasi
Published: February 2021

Saansad Adarsh Gram Yojana (SAGY) is a rural development programme and it was launched on 11 October 2014 with a mandate to develop three Adarsh Grams by 2019 and to substantially improve the quality of life of all sections of the population through improved basic amenities, higher productivity, enhanced human development, better livelihood opportunities, access to rights and entitlements especially for women and weaker sections. According to the census of 2011, in the Jayapur village, almost 46% of total females were illiterate, only 15% were main-worker and 29% of the total household was in the BPL category. In the present paper an attempt has been made to analyze the socio-economic condition of women after the implementation of SAGY in Jayapur village of Arajiline block, Varanasi District, U.P. The study is carried out in the adopted village of Prime Minister. The study is mainly based on a primary survey of data but a secondary source of data also used from the Block Development Office, Gram panchayat and Anganwadi Centres. Primary data were collected from 80 female respondents in the age group of 18-49 by using purposive sampling through the interview schedule. Both qualitative and quantitative techniques have used in this study. For a graphical representation of the data Pie charts, bar diagram, Tables and maps have prepared by using M.S. Excel and Arc GIS software. The results show that inaccessibility of water and sanitation facilities is still a major problem for the women of this village because they spend a lot of time in collecting water through hand-pumps and wells even for using the toilets they stored the water. Due to water scarcity, most of the women used to defecate in open. Although, Availability of electricity has made the life of women very easy especially in the completion of household chores such as serving food for families, teaching their children and in doing some productive works. Hence, there is an improvement in the socio-economic condition of women after the implementation of the SAGY but it is not at a satisfactory level. There is a need to investigate the proper implementation and fill the required gap.
Design of an Adaptive e-Learning System based on Multi-Agent Approach and Reinforcement Learning
Authors: El Fazazi H. , Elgarej M. , Qbadou M. , Mansouri K.
Published: February 2021

Adaptive e-learning systems are created to facilitate the learning process. These systems are able to suggest the student the most suitable pedagogical strategy and to extract the information and characteristics of the learners. A multi-agent system is a collection of organized and independent agents that communicate with each other to resolve a problem or complete a well-defined objective. These agents are always in communication and they can be homogeneous or heterogeneous and may or may not have common objectives. The application of the multi-agent approach in adaptive e-learning systems can enhance the learning process quality by customizing the contents to students’ needs. The agents in these systems collaborate to provide a personalized learning experience. In this paper, a design of an adaptative e-learning system based on a multi-agent approach and reinforcement learning is presented. The main objective of this system is the recommendation to the students of a learning path that meets their characteristics and preferences using the Q-learning algorithm. The proposed system is focused on three principal characteristics, the learning style according to the Felder-Silverman learning style model, the knowledge level, and the student's possible disabilities. Three types of disabilities were taken into account, namely hearing impairments, visual impairments, and dyslexia. The system will be able to provide the students with a sequence of learning objects that matches their profiles for a personalized learning experience.
Performance Analysis of Selective Mapping in Underwater Acoustic Orthogonal Frequency Division Multiplexing Communication System
Authors: Raza W. , Ma X. , Ali A. , Ali A. , Raza A. , Shaikh S.
Published: February 2021

Under-Water Acoustic (UWA) communication networks are commonly formed by associating various independent UWA vehicles and transceivers connected to the bottom of the sea with battery-operated power modems. Orthogonal Frequency Division Multiplexing (OFDM) is one of the most vital innovations for UWA communications, having improved data rates and the ability to transform fading channels into flat fading. Moreover, OFDM is more robust on Inter-Symbol and Inter-Carrier Interferences (ISI and ICI respectively). However, OFDM technology suffers from a high Peak to Average Power Ratio (PAPR), resulting in nonlinear distortions and higher Bit Error Rates (BERs). Saving power of battery deployed modems is an important necessity for sustainable underwater communications. This paper studies PAPR in UWA OFDM communications, employing Selective Mapping (SLM) as a tool to mitigate PAPR. The proposed SLM with the oversampling factor method proves to be less complex and more efficient. Simulation results indicate that SLM is a promising PAPR reduction method for UWA OFDM communications reducing BER.
Machine Learning Approach for an Automatic Irrigation System in Southern Jordan Valley
Authors: Blasi A. H. , Abbadi M. A. , Al-Huweimel R.
Published: February 2021

The agriculture sector is the most water-consuming sector. Due to the critical situation of available water resources in Jordan, attention should be paid to the issues of water demand and appropriate irrigation in order to spread the right management ways of modern irrigation to the farmers. The objectives of this paper are to improve the irrigation process and provide irrigation water to the highest possible extent through the use of artificial intelligence to construct a smart irrigation system that controls the irrigation mechanism using the necessary tools for sensing soil moisture and temperature, giving alerts of any change in the parameters entered as the baseline values for comparison, and installing system sensors buried at a depth of 3-5 inches below the roots to measure the moisture content in the soil. The sensors measure the humidity and temperature in the soil every ten minutes. They prevent the automatic irrigation process if the humidity is high, and permit it if the humidity is low. The smart automatic irrigation system model was built using the Decision Tree (DT) algorithm, which is a machine learning algorithm that trains the system on a part of the collected data to build the model that will be used to examine and predict the remaining data. The system had a prediction accuracy of 97.86%, which means that it may be successfully used in providing irrigation water for the agricultural sector.
Virtual Impedance-based Decentralized Power Sharing Control of an Islanded AC Microgrid
Authors: Pathan E. , Khan M. H. , Arshad H. , Aslam M. K. , Jahangir D. , Asad M. , Rabani M. I.
Published: February 2021

The future of power systems depends on the microgrid (MG) which includes distribution generators utilizing Renewable Energy Resources (RERs) and storage facilities. Decentralized control techniques are more reliable and stable in comparison with centralized controlled techniques. In this paper, a decentralized control strategy is presented for an islanded AC MG system. The control strategy includes improved droop control and virtual impedance. Control strategy with PI controllers to control the voltage and current is implemented to two Voltage Source Inverter (VSI) distribution generation units connected in parallel through a Point of Common Coupling (PCC). Circulating current and power-sharing deviations caused by the mismatched line impedance were taken into account. The proposed control scheme was tested in MATLAB/Simulink. Power-sharing accuracy and circulating current suppression were obtained by implementing the proposed virtual impedance-based decentralized control strategy.
Experimental Analysis and Control of a Wind-Generator System through a DC-DC Boost Converter for Extremum Seeking
Authors: Ahmed T. , Baloch M. H. , Khan N. , Mehr G. , Mirjat B. A. , Memon Y. A.
Published: February 2021

The advancement in technology has significantly improved the living standard, having a direct impact on the quality of life, at the cost of ever-increasing energy demand. Renewable energy resources such as the Wind Energy Conversion System (WECS) provide variable power generation. The current paper presents the results of the experimental analysis on the control of the wind-generator system based on SCIG through a dc/dc boost converter for extremum power-seeking. Since the Squirrel Cage Induction Generator (SCIG) is widely used in wind industries for power generation, their performance will be compared. The proposed system can operate either on a variable or at a nearly constant speed, with higher load capacity, while its power consumption is comparatively lower. The research will enhance the wind power at different wind speeds, to acquire the extremum power point tracking system from the wind power energy system by using two different machines.
A Survey of Text Matching Techniques
Authors: Alqahtani A. , Alhakami H. , Alsubait T. , Baz A.
Published: February 2021

Text matching is the process of identifying and locating particular text matches in raw data. Text matching is a vital component in practical applications and an essential process in several fields. Furthermore, several dynamic techniques have been introduced in this context in order to create ease in pattern generation from words. The process involves matching of text files, text mining, text clustering, association rule extraction, world cloud, natural language processing, and text similarity measures (knowledge-based, corpus-based, string-based, and hybrid similarities). The string-based approach forms the most conspicuous form of text mining applied in different cases. The survey attempted in the present study covers a new research premise that uses text-matching to solve problems. The study also summarizes different approaches that are being used in this domain.
Analyzing the Impact of Loop Parameter Variations on the Transient Response of Second Order Voltage-Switched CP-PLL
Authors: Ali E. , Narwani D. , Bughio A. M. , Nizamani N. , Siyal S. H. , Khatri A. R.
Published: February 2021

The analysis of the behavior of Charge Pump Phase-Locked Loop (CP-PLL) is a challenging task due to its mixed-signal architecture. Out of its two types, i.e. Current Switched CP-PLL (CSCP-PLL) and Voltage Switched CP-PLL (VSCP-PLL), the prior produces symmetrical pump currents, resulting in an appropriate transient performance to be analyzed. The loop parameters are important to set the gain, target frequency, and assure the stability of the system. The more important is the bandwidth of the loop, which is dependent on the loop filter parameters to perform stable operation and locking time. In this paper, the impact of loop parameter variations on the overall transient behavior of the system is investigated. It has been shown that loop parameters play an important role to ease the design of mixed-signal PLLs.
Bandwidth Enhancement of a Bell-shaped UWB Antenna for Indoor Localization Systems
Authors: Karoui M. S. , Ghariani N. , Lahiani M. , Ghariani H.
Published: February 2021

In this paper, a simple method of enhancing the bandwidth of the Bell-shaped UWB Antenna for indoor localization systems is proposed. Therefore, a modified version of the bell-shaped Ultra-Wide Band (UWB) antenna for indoor localization systems is presented. The proposed antenna is printed on a low-cost FR-4 substrate of 21×27×1.6mm3 size. It is composed of a bell-shaped radiating patch and a multi-slotted ground plane. The measured results show that the proposed antenna has an impedance bandwidth of about 11.2GHz ranging from 3.16GHz to 14.36GHz at S11<−10dB. Compared to the original version, an enhancement of about 5.56GHz in the measured impedance bandwidth was observed.
Experimental Characterization of Bacterial Concrete Against Mechanical and Durability Performance
Authors: Buller A. S. , Buller A .M. , Ali T. , Tunio Z. A. , Shabbir S. , Malik M. A.
Published: February 2021

This study experimentally investigates the mechanical and durability performance of bacteria concrete in terms of density, compressive strength, split tensile strength, and water absorption capacity. The concrete specimens were produced with a ratio of 1:2:4, w/c ratio of 0.45, and having a bacteria dosage level ranging from 1 to 6% by weight of water. To investigate the usefulness of the bacteria dosage level, cubic and cylindrical specimens were cast and tested after 28 days of water curing in a Universal Testing Machine with a constant loading rate. The density of each specimen was also recorded soon after casting and after the curing period ended. Moreover, the water absorption test was similarly conducted on cube specimens at various time intervals to record the penetration depth. The test results of normal concrete (without bacteria) were compared with the ones of the specimens containing bacteria. The optimum level of bacteria was found to be 3.5%, which showed the highest values in terms of compressive strength, split tensile strength, and density. Bacteria tend to generate more crystalline materials inside the concrete mass due to reactions with the surrounding moisture which produces a compact surface, thus strength properties were improved and water penetration was blocked which suggests better durability of the concrete.
Elaboration and Physico-Chemical Characterization of the Gibbsite Li(OH)3 Hybrid Material
Authors: Belkham N. el H. , Benachour D. , Mehamha A.
Published: February 2021

A hybrid material can be defined as a combination of two components of different chemical nature. The combination of a mineral matrix and organic matter has multiple significance. From a chemical point of view, it allows the obtaining of bi-functional materials that combine the chemical properties of their components. The development of new materials with specific properties and nanostructured Lamellar Double Hydroxides (LDHs) has been widely investigated due to their great importance. This study focuses on the development of a hybrid material consisting of a matrix of alumina trihydrate Al(OH)3 (gibbsite). Previous studies on the synthesis of suspension LDHs by lithium salts intercalation in a gibbsite matrix were examined, while the obtained samples were characterized by different physicochemical methods.
Reliability of Buried Pipes in Heterogeneous Soil Subjected to Seismic Loads
Authors: Benzeguir H. , Elachachi S. M. , Nedjar D. , Bensafi M.
Published: February 2021

Dysfunctions and failures of buried pipe networks, like sewer networks, are studied in this paper from the point of view of structural reliability and heterogeneity of geotechnical conditions in the longitudinal direction. Combined soil spatial variability and Peak Ground Acceleration (PGA) induce stresses and displacements. A model has been developed within the frame of geostatistics and a mechanical description of the soil–structure interaction of a set of buried pipes with connections resting on the soil by a two-parameter model (Pasternak model). Structural reliability analysis is performed considering two limit states: Serviceability Limit State (SLS), related to large "counter slope" in a given pipe, and Ultimate Limit State (ULS), corresponding to bending moment.
The Architectural Genotype Approach in Contemporary Housing (1995 to 2010): The Case Study of Setif, Algeria
Authors: Rahmane A. , Abbaoui M.
Published: February 2021

The current paper aims to analyze the architectural genotype principle that considers the arrangement of spaces as an abstract relational model. The goal is to demonstrate that syntactic measurements show that spatial structures allow messages to be decoded in each dwelling's inner spaces' architecture. The research uses the justified graphic technique for spatial syntax. Twelve detached houses have been randomly selected out of a total of sixty-two contemporary buildings that were built in a subdivision of Setif between 1990 and 2010. The analysis findings showed that the spatial characteristics and properties that constitute the generic rule underlying the studied space can be detected. This research supports the notion that the implementation of the spatial syntax method can aid in the proposition of innovative solutions regarding the design of sustainable housing projects.
Improving the Mechanical Performance of Shell Precast Concrete Blocks for Coastal Protection Structures of Hydraulic Works
Authors: Viet Duc N.
Published: February 2021

Although the use of concrete and reinforced concrete for construction has been widespread, more studies are needed on marine structures exposed directly to corrosive environments to prolong their service life. This paper proposes a new type of shell precast concrete block for coastal structures, studying a beam consisting of 15mm High-Performance Glass Fiber-Reinforced Concrete (HPGFRC) at the bottom and 45mm Traditional Concrete (TC) for the rest of the structure. Steel bar reinforcements were placed at the bottom with a concrete cover of 25mm to avoid abrupt failure. The strength classes of HPGFRC and TC were 60MPa and 30MPa respectively. A reference beam consisting of TC only was also prepared for comparison. The four-point flexural bending test results showed that the first cracking strength of the proposed beam was 20% higher, as HPGFRC performed better on tension than TC. Additionally, HPGFRC's maximum strength was 25% greater than TC's. Furthermore, HPGFRC possessed more durable characteristics such as waterproof grade, abrasion resistance, and shrinkage than TC, promising to protect the reinforcement from the aggressive marine environment and corrosion, prolonging the service life of the structure.
Island Detection Communication in IEC61850 Grid Controller by Utilizing 2oo3 Architecture to Improve Redundancy and Reliability
Authors: Shaikh M. A. , Pathan E. , Rabani M. I. , Goli S. B. , Qureshi A. A. , Shahid M. , Pathan F. , Khan M. H.
Published: February 2021

After large-scale photovoltaic (PV) and wind power integration with the national grid, the island grid detection is a crucial technique that identifies when a grid should be considered as dead. This logic is built in an IEC61850 grid controller which mainly depends on the bus bar scheme and fault type. It becomes more complex when the ½ circuit breaker scheme is utilized. The lack of communication redundancy causes island mal-operation due to the substation's DC supply failure. In order to avoid such mal-operation discrepancies, this paper investigates the conventional islanding detection method. Then, an advanced IEC61850 grid controller 2oo3 architecture is proposed for islanding detection, based on SAS redundant communication which improves reliability. However, even if there is an interface communication failure, the power plant control center can still detect the islanding through the proposed IEC61850 grid controller and SCADA IEC60870-5-101/104 gateways integration. This method has the tendency of full supervision of the entire grid and perfect logical judgment by plant operation staff. This feasible and the proposed redundant communication architecture can play a decisive role for power system network stability in order to avoid system blackout.
Diagnostic de l’infection par le SARS-CoV2
Authors:   Service des Maladies Infectieuses. Centre Hospitalier Universitaire Ibn Rochd – Maroc, Marih Latifa , Sodqi Mustapha
Published: February 2021

Le diagnostic de l’infection par le SARS-Cov-2 repose sur un ensemble d’arguments cliniques, biologiques et radiologiques. L’infection par le SARS-Cov-2 se manifeste principalement par des signes respiratoires. Parfois, des manifestations extra-respiratoires peuvent être le premier ou le seul symptôme de COVID-19, avant la fièvre ou les signes respiratoires. Les anomalies biologiques pouvant orienter précocement vers une infection par le SARS-CoV-2 sont la lymphopénie, une C Réactive Protéine (CRP) augmentée. Le scanner thoracique semble utile pour identifier des images compatibles avec la COVID-19. Les tests sérologiques pourraient amener une information diagnostique complémentaire aux tests moléculaires par RT-PCR, méthode de choix pour mettre en évidence la présence du virus SARS-CoV-2.
Diabetes mellitus and COVID-19
Authors:   Faculté de médecine, Université Ferhat Abbas. Sétif 1 - Algérie, Malek Rachid
Published: February 2021

On retrouve dans la majorité des données de la littérature que l’infection COVID-19 chez les patients diabétiques n’est pas plus prévalente par rapport à la population non diabétique. Cependant, l'infection COVID sera plus sévère. Les complications métaboliques aigues telles que l'acidocétose diabétique ou l'hyperosmolarité sont fréquentes soit chez des nouveaux cas de diabète soit chez des diabétiques connus. Parmi les facteurs influençant le pronostic de l’infection, le mauvais équilibre glycémique aggravé par l'insulinorésistance induite par la COVID-19, les comorbidités telles que l'obésité, l'hypertension artérielle et la présence de complications cardiovasculaires et rénales. Par ailleurs, « l'orage cytokinique » peut induire une défaillance multi viscérale, chez les diabétiques de type1 (DT1) ou diabétiques de type 2 (DT2). L’insulinothérapie devrait être le traitement de choix des patients en état grave ou critique. Il ne faut pas oublier le rôle de l'éducation et bien informer les patients et les praticiens sur les règles universelles de prévention de l’infection COVID-19 ainsi que sur certains conseils spécifiques au diabète sucré (bon équilibre glycémique, renforcement de l’autosurveillance glycémique, maintien du suivi et disponibilité du traitement).
Wireless Low Cost Patient Monitoring System
Authors: M M. Gnanathilaka Shofana , Kavitha S. , Pavithra A. , Vijayarangan Dr. V.
Published: February 2021

In this ameliorating vogue of medical field, the impending danger of pandemic had driven us into gloom. The doctors can’t monitor each and every patient by coming near to them at all time. This leads to inconvenience for patient and made hospital management to feel helplessness about the problem. Though Conventional PMS monitors the physiological signals constantly but failed in providing it to the medical personnel during emergencies in real time. Other issues with traditional PMS is that most are heavy and bulky machines. Hence we propose to develop a low cost, portable PMS which measures the physiological signals of the patient with minimal intervention and contactless, providing correct and reliable data at the same time. Thus, we proposed a portable real time device that obtains various biological signals from the patients using electronic sensor network.. The acquired signals are processed and displayed in OLED display. Apart from this the emergency signals are transmitted and received wirelessly to the medical professionals for speedy necessary action without the intervention of them self. The proposed PMS system could be connected to a internet in a wireless mode , so that the patients will be free to move while their physiological signals are monitored. Thus, the critical condition of the patient can be informed to doctors and they could be treated promptly if any emergency occurs. This is suitable for the critical care of patients suffering from COVID -19 and monitoring the well being of old people who are at home and need constant monitoring. This is why we call our device low cost Wireless Patient Monitoring System (WPMS).
DDoS Attack Detection Algorithms Based on Pattern Classification and Machine Learning
Authors:   Dept. of Electronics and Communication Engineering, Sri Satya Sai University of Technology & Medical Sciences, Sehore, Bhopal Indore Road, Madhya Pradesh, India., Ingle Anup , Gour Dr. Avinash ,   Dept. of Electronics and Communication Engineering, Sri Satya Sai University of Technology & Medical Sciences, Sehore, Bhopal Indore Road, Madhya Pradesh, India., Kshirsagar Dr. Ketki ,   Dept. of Electronics and Telecommunication, VIIT, Pune, Maharashtra, India.
Published: February 2021

Damage from DDoS attack in increasing day by day and an efficient attack detection algorithm is urgently needed. Many current DDoS algorithms are based on anomaly detections which are ineffective in real environment. Detection DDoS attack can be tackled effectively with pattern classification based on flow of packet and machine learning algorithms. In this paper three such pattern classificationsbased on flow of packet and machine learning based algorithm for detection of DDoS attack are discussed. Implementation of these algorithms gives better accuracy in limited time and memory space; hence it’s one of the highly scalable and effective in detection of DDoS attack.
La titulación profesional como corolario de la investigación formativa en Ecuador
Authors: Abad Camacho César Gabriel , Rivera Ríos Alex Rodrigo , Romero Arcaya Aníbal Stefan
Published: February 2021

En el trabajo que se presenta se expone un breve análisis sobre el rol que juega la investigación en la formación del nuevo profesional, situación que no debe ser ajena a la comunidad educativa universitaria ecuatoriana. En este sentido se propuso como objetivo analizar de manera breve la repercusión positiva, si se emplea de manera adecuada la investigación en lo correspondiente al tratamiento teórico de la información que se desprende del currículo y su posterior aplicación práctica. Para la ejecución del propósito planteado se requirió recurrir el método bibliográfico para la búsqueda de la información y su posterior análisis, comparación, síntesis hasta llegar a conclusiones generales y particulares que se plasmaron en el manuscrito que se exhibe. Los hallazgos evidenciaron que aunque existe normativas vigentes para la formación en investigación de los cursantes de las carreras universitarias, no obstante, para que se dé el cumplimiento de lo legislado se requiere de otros complementos como, el mejoramiento presupuestario de las instituciones de educación superior, la vinculación a las cátedras de profesores con vasta experiencia en tareas investigativas, además otorgar el tiempo necesario a docentes y estudiantes para que puedan vincularse a dichas acciones. A manera de conclusión se logró determinar la importancia del dominio de la investigación para el desarrollo de habilidades de búsqueda, tratamiento y utilización de la información de manera pertinente.