bluuebunny/crossref_metadata_2025 huggingface dataset:
Gross Anatomical Variations of Cystic Duct: A Cadaveric Study
Authors: Rubab Syeda Shabeeh , Iftikhar Warisha , Kuraishi Raafea Tafweez , Salman Saira
Published: July 2021

Aim: To determine the frequency of anatomical variations of cystic duct. Study design: Descriptive Case Study Place and duration of study: Anatomy Department of King Edward Medical University Lahore and duration of study was from August 2018 to December 2019. Methodology: The dissection of 43 cadavers was done and extra hepatic biliary tract was explored. The length of cystic duct and site of insertion of cystic duct in common hepatic duct was noted. The length of cystic duct <1 cm was taken as short cystic duct and >4cm as long cystic duct. The insertion of cystic duct near porta hepatis is high insertion and near duodenum is low insertion. Results: The mean length of cystic duct was 2.67±0.71 cm. Out of 43 cadavers 2(4.7%) of cadavers had short cystic duct. 41(95.3%) of cadavers had normal length of cystic duct. There was no cadaver observed with long cystic duct. Out of 43 cadavers 39(90.7%) of cadavers had mid insertion of cystic duct, 4(9.3%) of cadavers with high insertion of cystic duct and no cadaver with low insertion. Conclusion: The most common anatomical variation of cystic duct is high insertion of cystic duct 9.3%. Keywords: Anatomical variations, cystic duct, cholecystectomy.
Mekân Özelinde Malzemenin Önemi
Authors: Erçetin Arzu , Erdemir Zuhal
Published: July 2021

Mekân kavramı birçok meslek disiplini tarafından farklı bakış açıları ile tanımlanmaktadır. Ancak bütün tanımların ortak bir noktası olarak kullanıcı, anlamlandırma, barınma gibi kavramlar karşımıza çıkmaktadır. Her mekân kullanıcısı özelinde ve kullanıcısının gözünde şekillense de tasarımcı tarafından mekânsal organizasyon kadar o mekâna hayat veren malzemeler de ayrı bir tanım konusu olarak karşımıza çıkmaktadır. Çünkü her malzemenin, dokunun, rengin ayrı bir anlamı vardır. Malzemelerin taşıdığı her anlam mekânlarda yaşanmışlıklarla birlikte değerlenir. Bunun yanı sıra malzemenin sadece mekânların iç mimarisi özelinde değil, tarihsel süreç içerisinde yapıların oluşumunda her alanda önemli olduğu gerçeği de göz ardı edilmemelidir. Bu çalışmanın amacı mekân ve malzeme kavramının hayatımızda tasarım boyutunda bütünlüğü kadar, her iki tanımında tarihsel süreç içerisinde önemini ve birbiri ile etkileşimini ortaya koymaktır.
A Qualitative Study of Signal Strength Coverage of Digital Terrestrial Television in Ibadan South Western Nigeria
Authors: Bolarinwa Hakeem Sanya
Published: July 2021

This work investigated the quality of signal strength coverage of the existing Digital Terrestrial Television (DTTV) operator in Nigeria using Startimes Ibadan as a case study. Signal strength and altitude data at different locations within a 40km radius of the Startimes transmitting station were measured to determine the quality of signal strength reception of Startime's digital television in Ibadan metropolis. A signal analyzer, a 10-meter cable, Yaggi external antenna and Global Positioning System (GPS) were used for the measurements at various locations in Ibadan within 40km radius distance of Startimes based station at Agodi in Ibadan. The city was grouped into six different zones for proper signal testing and efficient data collation. Parameters such as signal strength, distance, altitude, signal to noise ratio, modulation error rate, pre-bit error rate and post-bit-error rate were measured and recorded. The effects of distance and altitude were analyzed. It was observed from the result that there is a direct relationship between power level and altitude. In addition, there is an inverse relationship between power level and distance.
Comparative Analysis of Theoretical and Empirical Data of Synthetic Cannabinoids
Authors: Abdulsalami I O
Published: July 2021

Comparative studies of spectroscopic data of indol-3-carboxylates and indazole-3-carboxylates are reported from theoretical and empirical viewpoints. Structures of indol-3-carboxylates and indazole-3-carboxylates were modeled; quantum chemical method was employed to investigate the spectroscopic (NMR and FT-IR) properties of the structures.  The results obtained from the theoretical studies were compared to empirical results obtained for the spectroscopic properties of these compounds and level of agreement (or disagreement) between the results for the two studies are reported. The scope of the study is limited to the modeling, structural, and electronic and spectroscopic analyses of the modeled structures and comparative analysis of the theoretical data with published experimental data. The absorption transitions were calculated from the optimized geometry in the ground state (S0) using TD-B3LYP/6-31G**. The energy band gaps calculated showed that Naphthalene-1-yl 1â€“(5-fluoropentyl)-1H-indazole-3-carboxylate (M5) has the lowest band gap energy, which may have a substantial influence on the intramolecular charge transfer and bioactivity of the molecule. The 13C and 1HNMR chemical shifts calculated at ab initio and DFT agreed with the experimental data. DFT/6-311G** has the best correlation with fitting factor 0.9956.Thus the chemical shifts from DFT/6-311G** are very close to the experimental and can be used in the absence of experimental data. The vibrational frequency analyses by DFT/B3LYP method are in reasonable agreement with the experimental values.
Factor Analysis Techniques for the Assessment of Water Quality: A Case Study of Okun River, Ilorin, Kwara State
Authors: Okoro H. K. , Adebayo G. B. , Saliu O.D , Adebayo A. O.
Published: July 2021

Okun River caters for diverse needs. Resulting from rapid industrialization and urbanization, the quality of the river is significantly affected. The study of impact of discharged industrial wastewaters into Okun River was carried out. Physicochemical properties such as temperature, turbidity, conductivity, total suspended solids, total dissolved solids, colour, odour, pH, total hardness, chloride, and concentrations of heavy metals (chromium, manganese, iron, copper, zinc and cadmium) were assessed. The mean concentrations of heavy metals and the physicochemical parameters determined were compared with standards and tolerance limit. Cr was not detected in all the samples while Mn, Fe, Cu, Zn and Cd concentrations varied from 0.10-3.47 mg/L, 2.64-9.65 mg/L,0.37-3.79 mg/L, 0.22-1.53 mg/L and 0.00-0.03 mg/L respectively. The mean values of pH, temperature, conductivity, turbidity, TSS, TDS, total hardness and chloride ranged between 6.33-7.77, 25.0-29.0 oC, 325-815 mS/cm, 14.80-209.33 NTU, 733.33-1033.33 mg/L, 133-395.67 mg/L, 137.50-962.50 mg/L and 11.52- 49.04 mg/L respectively. The principal component analysis confirmed the heavy metals to be from anthropogenic and industrial origin.
Uji Coba Penjaminan Kacamata di FKTP
Authors: H Denawati Tati , Dhanalvin Erzan , P Saut Benjamin , R Siregar Deddy
Published: July 2021

Penjaminan alat kesehatan kacamata merupakan salah satu manfaat tambahan yag diberikan oleh BPJS Kesehatan kepada peserta JKN. Sejak implementasi program JKN, kasus kacamata makin meningkat dan berdampak pada peningkatan biaya pelayanan kesehaan yang harus dibayarkan oleh BPJS Kesehatan. Selain peningkatan kasus, proses penjaminan yang tidak efektif juga memicu kenaikan beban biaya. Untuk mendapatkan pelayanan kacamata, peserta berkunjung ke FKTP, kemudian dirujuk ke FKRTL dan mendapatkan pelayanan kacamata di optik yang bekerja sama dengan BPJS Kesehatan. Di setiap titik layanan, BPJS Kesehatan membayarkan biaya pelayanan kesehatan. Penjaminan tidak efektif berdampak pada pengeluaran yang tidak seharusnya sebesar Rp 153 miliar per tahun. Riset operasional ini dilakukan untuk mendapatkan alur penjaminan yang lebih efektif. Data diperoleh dari 26 kantor cabang BPJS Kesehatan selama kurun waktu Juli 2019 sampai Maret 2020. Perubahan proses bisnis memungkinkan peserta mendapatkan resep kacamata dari dokter di FKTP untuk selanjutnya mendapatkan kacamata di optik. Perubahan proses bisnis ini berdampak pada efisiensi sebesar Rp 4.8 miliar. Direkomendasikan BPJS Kesehatan untuk mengimplementasikan proses bisnis hasil riset di seluruh Indonesia.
O LÚDICO COMO FERRAMENTA DE INCLUSÃO: A INCLUSÃO NA EDUCAÇÃO INFANTIL
Authors: NORGANG DE OLIVEIRA ELIANE
Published: July 2021

O presente trabalho tem como objetivo discutir as políticas de “inclusão”, mais especificamente aquelas relacionadas à educação especial direcionando o olhar para a educação infantil e ao mesmo tempo apontar estratégias de mediações pedagógicas que contribuam com a inclusão pensada ludicamente. Para tanto, pretende apreender os discursos políticos sobre inclusão, buscando compreender suas filiações teóricas ao mesmo tempo em que faz uma sucinta reflexão acerca dessa política dentro do espaço da educação infantil, considera educação infantil em toda complexidade de diferentes tempos e espaços de desenvolvimento global dos indivíduos, numa concepção de educação emancipatória e plural, numa perspectiva de mediação lúdica, criativa e brincante. A partir do pressuposto no qual o planejamento das políticas públicas tem ocorrido, num fracionamento da análise sobre as lutas sociais historicamente construídas nesse cenário. Busca fazer uma relação entre o desenvolvimento humano, infantil e social num contexto de inclusão, baseado no conceito de educação inclusiva enquanto formado de pessoas com diferentes habilidades e potencialidades que integram uma sociedade com o um todo.
EDUCAÇÃO AMBIENTAL PARA CRIANÇAS DE 0 A 3 ANOS
Authors: ANA DE LUCENA MELLO ELIZABETH
Published: July 2021

Ao trabalhar com esse tema se faz necessário o envolvimento de toda comunidade escolar e as famílias também. É um trabalho que começa no espaço escolar e tem seus desdobramentos no lar de cada criança. Iniciamos com sensibilizar crianças para as questões ambientais, visando à importância desse público nas ações que hoje são tomadas, e vendo-os como futuro promissor e conservador do meio em que vivem, sabemos que o trabalho tem que ser contínuo, por isso o compromisso dos professores, pois eles e de toda comunidade escolar. A forma de aplicação desse tema se faz de forma rápida e objetiva, aproveitando a infraestrutura escolar, é interessante iniciar com uma palestra com os familiares para sensibilização, participação e envolvimento no tema. Outro momento são as oficinas que oferecem melhor assimilação e descontração: produção de brinquedos com materiais reutilizáveis, assim tornando o tema interessante para a faixa etária escolhida. A partir das atividades realizadas, a mudança de hábitos diários, como a separação correta dos resíduos produzidos, a disseminação do que foi aprendido em sala e a proximidade entre professor, aluno e famílias, unidos pela mesma causa.
MEDO NA PRIMEIRA INFÂNCIA: COMO O TRABALHO COM PROJETO CONTRIBUI PARA SUPERAR ESSA FASE NO AMBIENTE ESCOLAR
Authors: DOS SANTOS CAETANO FARIAS LUCIANA
Published: July 2021

RESUMO Este artigo tem como objetivo apresentar um tema delicado e pouco tratado na educação infantil e como um projeto a partir desse tema transformou-se em saberes significativo e envolveu crianças, professora e famílias. O medo é uma emoção que nos seres humanos sentimos em todas as fases da vida, mas, sobretudo na infância. Em maior ou menor grau as crianças manifestam seus medos, por vezes demonstram certa complexidade em relação a eles, pois as mesmas coisas que as assustam chegam a provocar nelas certos fascínios. E foi esse fascínio que as fez mergulhar no mundo da fantasia e aprenderem a lidar com os medos que povoam o imaginário infantil. Por meio de uma escuta sensível da professora e de suas observações, um projeto foi desenvolvido tendo como protagonista a criança e sua curiosidade, sua vontade de aprender e achar respostas para seus questionamentos. Todo percurso foi cuidadosamente documentado de modo que passou a contar a história daqueles momentos que certamente ficaram em suas memórias.
O PODER DOS CONTOS E DAS FÁBULAS NA PRÁTICA PEDAGÓGICA – ABORDAGEM PARA O ENSINO FUNDAMENTAL
Authors: FERNANDES MATOS LUCIANA
Published: July 2021

Atualmente no ensino fundamental as práticas pedagógicas direcionadas pelo professor estão ganhando formas diversificadas, buscando atender necessidades específicas, sejam elas individuais ou em grupo, ressaltando um trabalho qualitativo nas séries inicias de alfabetização e letramento. Os contos e as fábulas como recurso dentro de sala de aula se aprimoram e tornar-se presentes cada vez mais nos planejamentos, uma literatura incrível e usada há muitos anos no processo de construção de conhecimento da criança, do jovem e também do adulto. É necessário conhecer, se aperfeiçoar e compreender os importantes autores desse universo, descobrindo diferentes possibilidades de ensinar e aprender. Na escola pode-se ter acesso a muitas metodologias e o educador é a principal fonte de ensino, produzindo e criando propostas que contemple a cultura, o respeito e a diversidade.
LEITURA NA EDUCAÇÃO INFANTIL
Authors: PEREIRA ALVES CADUDA LUCIANA
Published: July 2021

Este artigo aponta para a importância de se trabalhar Literatura com as crianças, visando não somente o conhecimento e a aquisição da linguagem e da escrita, mas como um agente de formação, que possa contribuir com o seu desenvolvimento e auxiliar efetivamente na compreensão de mundo. Analisa o conceito de infância construído através dos anos, para se compreender o papel da criança na sociedade atual, suas necessidades para a formulação do mundo que a cerca e como a Literatura Infantil pode contribuir para esse desenvolvimento. Buscam-se direcionamentos para a prática de uma leitura significativa e construtiva, que além de conhecimentos e aprendizagens, proporciona também prazer. Pretende-se, neste artigo refletir sobre a leitura na Educação Infantil, compreender seu papel no processo de desenvolvimento e educação da criança, a importância da mediação pedagógica realizada pelo professor, da contextualização da literatura trabalhada com a vida da criança e a relevância de se escolher boas obras.
A DEFICIÊNCIA INTELECTUAL EM FOCO
Authors: DE SANTANA MARIANA
Published: July 2021

Neste artigo iremos apresentar a contextualização da pessoa com deficiência intelectual no âmbito escolar e a sua inclusão na sociedade, visando adotar uma educação emancipatória e inclusiva, como a base acadêmica poderá quebrar barreiras eurocêntricas e hegemônicas dentro do âmbito escolar e todos os estereótipos criados a margem de uma sociedade com uma cultura preconceituosa. A educação deverá ser à base de novos princípios norteadores de uma cultura em respeito à diversidade humana, visando à transformação inclusiva e autônoma de pessoas com deficiência intelectual, com propostas educacionais, e seu potencial para a inclusão, decorra pelo adequado desenvolvimento das tecnologias no saber pedagógico e do de inovações nas formas de ensinar e interagir com os discentes. Iremos ressaltar e refletir nesse artigo a importância do processo de inclusão, no contexto escolar, focando seus objetivos e sua organização, considerando especialmente as diretrizes para a educação especial e as recomendações de organizações nacionais e internacionais para essa modalidade educacional.
LUDICIDADE E A INCLUSÃO
Authors: PEREIRA DE OLIVEIRA SOUZA PRISCILA
Published: July 2021

O papel do orientador vem crescendo e se aprimorando a cada dia, de acordo com as necessidades dos dias atuais. O mercado de trabalho exige cada vez mais e a educação como fim transformador para acompanhar as tecnologias, necessita acompanhar essas mudanças de forma permanente, ou seja, se aperfeiçoar estando em formação contínua. Sendo assim, se faz necessário uma formação continuada, que se atualize constantemente. Para que o trabalho do Orientador Educacional seja válido é de suma importância que faça estudos constantes, principalmente no âmbito social-político no qual a escola está situada. Uma grande aliada nos dias atuais é a internet, que com suas diversas ferramentas pode contribuir de forma positiva se utilizada corretamente como forma alternativa de educação e pesquisa, sendo assim, o mediador usa também a ferramenta da ludicidade como forma de ensino e para lidar com crianças e suas necessidades especiais.
ACESSO, INCLUSÃO E MODALIDADES DE ATENDIMENTO
Authors: TELES E SILVA SILVANA
Published: July 2021

É preciso oferecer aos alunos diferentes modalidades de atendimento educacional que permitam assegurar-lhes o êxito na aprendizagem e na participação. Isto é equidade que reconhece as diferenças individuais e a importância do trabalho na diversidade, com espírito democrático. Deve-se também dar ênfase àqueles alunos que, por direito público e subjetivo de cidadania, requerem apoio educacional complementar ou suplementar, para aprender e participar, porque são pessoas com deficiência de várias causas ou origens ou por que apresentam altas habilidades/superdotação. É necessário que o sistema educacional, em todos os níveis, reconheça o quanto suas premissas precisam ser modificadas além de suas práticas.
Performance Analysis of Boost Converter for Constant Voltage Applications Under the Variation of Closed-Loop PI Controller Parameters
Authors: Roy Shetu , Umme Hani Sumaiya , Mannan Mohammad Abdul
Published: July 2021

PI Controller is one of the eminent controller which holds majority of the applications in industrial purposes. This paper encompasses an analysis on the performance of PI controller for DC-DC Boost converter for constant voltage application where codifications of gains of PI controller are done in terms of natural frequency and damping factor. The converter has been designed to operate in continuous conduction mode and the voltage mode control strategy has been proposed by using pulse width modulation (PWM) with the PI controller. A set of gain parameters of PI controller can be selected to obtain the output of the PI controller with low rise time, quick settling time and also with more stability features. The effectiveness of this boost (or step up) converter with different set of PI controller gains has been verified through simulation where MATLAB/Simpower is used as the utensil. All the simulation results intrinsically emphasized on efficient performance of the proposed control strategy.
Projected Performance of an InxGa1-xAs Quantum Dot Intermediate Band Solar Cell
Authors: Amin Sayeda Anika , Hasan Md. Tanvir
Published: July 2021

Quantum Dot Intermediate Band Solar Cell (QDIBSC) is one of the emerging technologies in the solar photovoltaic arena, which has immense potential to be demonstrated as a high efficiency device. For a QDIBSC to surpass the efficiency of a single junction cell, optimization of design is required. In this work, a QDIBSC model based on In0.53Ga0.47As quantum dots has been designed and evaluated with respect to dot size and spacing. The impact of carrier lifetime on short-circuit current and open-circuit voltage is studied. The conversion efficiency has been enhanced from 27.1% to 32.62% as compared to a conventional single junction cell.
Classification of Heart conditions by Statistical Characterization of ECG Signal
Authors: Haque Asma , Rahman Abdur
Published: July 2021

Electrocardiogram (ECG) signal exhibits important distinctive feature for different cardiac issues. Automatic classification of electrocardiogram (ECG) signal can be used for primary detection of various heart conditions. Information about heart and ischemic changes of heart may be obtained from cleaned ECG signals. ECG signal has an important role in monitoring and diacritic of the heart patients. An accurate ECG classification is challenging problem. The accuracy often depends on proper selection of observing parameters as well as detection algorithms. Heart disorder means abnormal rhythm or abnormalities present in the heart. In this research work, we have developed a decision tree based algorithm to classify heart problems by utilizing the statistical signal characteristic (SSC) of an ECG signal. The proposed model has been tested with real ECG signal to successfully (60-98%) detect normal, apnea and ventricular tachyarrhythmia condition.
Planning for Blue Economy: Prospects of Maritime Spatial Planning in Bangladesh
Authors: Saha Kawshik , Alam Afsana
Published: July 2021

Over the years, there has been a growing concern to adopt new strategies for sustainable marine resource management. Coastal countries are implementing new policies, methods and plans to develop long term vision and secure financial investments for their coastal and marine spaces. Recently maritime spatial planning (MSP) is gaining attention as a new approach to sustainable marine resource management by integrating economic, environmental and social concerns is same management platform. In many countries, MSP has been proved as an effective tool to implement ecosystem based approach of planning to achieve long term maritime vision. Bangladesh, with growing economic interest on coastal and marine resources, is looking to adopt best strategies for achieving blue economy goals. However, degrading ocean health due to anthropogenic pressure and impact of climate change are major challenges that need to be faced. This paper explores implication of Maritime Spatial Planning for ocean resource management to achieve blue economy goals and overcome future environmental constraints as well. The authors aim to introduce maritime spatial planning (MSP) as potential tool for sustainable marine resource management to wide range of researchers, professionals working with coastal and marine issues in Bangladesh to encourage further research and exploration.
Solar and Wind Energy Based Microgrid : Study of Architecture's Potential at Coastal Areas in Bangladesh
Authors: Muhtadi Abir , Saleque Ahmed Mortuza , Mannan Mohammad Abdul
Published: July 2021

Due to sheer dependency upon fossil fuel sources, Bangladesh as a country is not free from numerous negative aspects. Country’s requirement for a certain portion of power be generated from renewable energy sources is due and required renewable energy target (RET) needs to be fulfilled. In this study, potential of distinguished coastal sites for entirely renewable energy such as solar and wind sources based microgrid for chosen community is explored. Microgrid architecture is appropriate considering the coastal areas’ geographical locations and due to the inconvenience in grid extension. Study suggests, potential of coastal sites are found to be feasible for such structures based on real case scenario data and modelled technical scheme.
Design and Implementation of a Three-Phase Inverter Operated with different Conduction Modes with Automatic Powerfactor Improvement
Authors: Rahman Mohammad Halimur , Mannan Md. Abdul , Haq Mamun Mohd Muinul
Published: July 2021

Three phase inverters are widely used to control different industrial process. Power electronics based inverters are very popular for fast response and precise control. In this paper an IGBT based three phase power inverter is proposed. Conventional three different conduction modes of 1200, 1500 and 1800 have been adopted. Micro-controller based firing pulse generation circuit using a special multi-winding transformer and opt-coupler to apply isolated firing pulses for each IGBT has been developed and tested successfully. Simulation and test results of the inverter for three phase resistive as well as inductive loads have been presented. The test results are found to be in good agreement with the simulation outcome and also with the theoretical analysis. The main objective is to make an inverter with selectable conduction modes so that specific mode can be defined for resistive or reactive loads. The required correction for PFI is done by adjusting the percentage of duty cycle firing pulse of IGBT to control the capacitive current. The result of the experiment can be used to design PFI (Power Factor Improvement) units for the small industries and domestic users as well. In this paper a three phase inverter of multiple conduction mode with a switching capacitor power factor improvement (PFI) system is analyzed.
Self Modeling and Gait Control of Quadruped Robot Using Q-Learning Based Particle Swarm Optimization
Authors: Ali Meerza Syed Irfan , Uzzal Mohammad Mohiuddin
Published: July 2021

In the realm of the living creature human and animals create their body schema by the learning they gather while they interact with the real world. They can also remodel the schema if they have any uncertain changes in their body. This kind of robustness is still not achieved by any machine or artificial system. Researchers are trying to build the machines resilient so that machines can explore the unknown space. In this paper, we used Particle Swarm Optimization (PSO) which a population based algorithm to allow a quadruped robot to learn its body schema using a gyroscopic sensor and real world interaction. We added Q- Value based learning (Q-Learning),s an actor-critic scheme to aid PSO to learn faster and avoid being trap in local optima. Robot creates an imaginary model of its own body which include imaginary gaits using a very little prior knowledge. The robot aims to use the gaits to achieve stability and predictive movements. I can also detect changes in its body and adopt the changes, which leads to a damage diagnosis system. We tested the algorithm using graphics simulator and verified using a 3D printed quadruped robot with 12 actuators.
Load Flow Analysis of Dhaka Grid Using PSAT and ETAP and Performance Comparison to PGCB Data
Authors: Abdullah Alvi Anas , Mannan Mohammad Abdul
Published: July 2021

This paper deals with a load flow simulation of existing Dhaka Grid Circle of Bangladesh National Grid by using Power System Analysis Toolbox (PSAT) which is a free and open source software of MATLAB Simulink and Electrical Transient and Analysis Program (ETAP) software designed for simulation, operation, and automation of generation, distribution, and industrial power systems. All the data used to simulate were collected from Power Grid Company of Bangladesh (PGCB) and Load flow analysis was carried out using Newton Raphson method and simulated results were compared with PGCB Base Case Data. The network we are considering to simulate has 71 buses (400, 230 and 132 kV), 135 interconnecting lines, 32 generators, 47 loads and only 4 shunt capacitors as per the Dhaka grid circle system. Regarding the maximum demand of the load centers, total 5,525 MW load is connected in this system and the average grid generation in September, 2018 was 10,919.57 MW, though only 5988 MW of the total generation is enlisted in the Dhaka grid circle.
Augmentation of DC-Link Protection System of PMSG Based Wind Turbine Using Fuzzy Logic Controlled Buck Controller System
Authors: Haque Md. Zubairul , Hazari Md. Rifat , Mannan Mohammad Abdul , Tamura Junji
Published: July 2021

Recently, permanent magnet synchronous generator (PMSG) is one of the most familiar type of generator for wind power plant (WPP). Generally, PMSG is connected to gird using back to back converter. During fault period, power imbalance situation is happened between machine side and gird converter. As a result, the DC-link voltage can be rise significantly which can damage the whole converter system. In this paper, a novel DC-Link protection system of buck converter based on fuzzy logic is designed in order to augment the transient stability of the PMSG system. The new buck converter along with its control system is designed to manage the supplied voltage of the braking resistor during fault period. For investigating the performance of the proposed system, fault analysis is performed on different case scenarios PSCAD/EMTDC software.
YOLO-Based Enhancement of Public Safety on Roads and Transportation in Bangladesh
Authors: Anjir Ahmed Chowdhury  , Sabrina Kashem Chowdhury  , Md Hanif  , Sadia Noor Nosheen  , Md. Saniat Rahman Zishan
Published: July 2021

In order to upgrade the efficiency level of multiple tracking like face, actions, characters, a deep learning method is introduced to reduce the accidents occurred in roads for carelessness and also to capture the criminals in Bangladesh. This paper presents a faster processing multiple detection method with the best possible outcome under the framework of YOLOv2 algorithm in the event of car accident, crossing foot over bridge and using the zebra crossing in Bangladesh. Different layers were added to the YOLOv2 algorithm to pass the information in various convolutional layers to detect multiple objects with actions. In this paper YOLOv2 algorithm under DarkFlow framework is used to achieve higher ratio of confidence value as the max convolutional layers reorganize the feature map so that other layers feature map can be matched with the bottom layers to achieve the expected output of the indicated events. By removing the noise from the unrelated area, the detections of the training video and test video adopt quite parallel confidence ratio.
Heritage Architecture: Conservation and Revitalization of Adamjee Jute Mill
Authors: Hasan MD Tanvir , Mannan Ashik Vaskor , Rezve Fahim Hasan
Published: July 2021

Bangladesh has a glorious history of producing jute and jute products. Adamjee jute mill was the largest jute mill in the world, established in 1950. But unfortunately, it has been shut down in 2002 due to some unavoidable and political reasons. Later government and many private entrepreneurs tried to revitalize this mill but failed, and at present only a few broken infrastructures exist as old memories. This ruined huge abandoned shade representing not only the jute culture in our country but also signifying our history. Nature changes with the time but the memory of space remains timeless if we preserve them. Rapid competition of development of our country creating threats for the survival and continuity of our heritage and culture. The purpose of this study is to point out the possibility and importance to revitalize Adamjee jute mill as a heritage site and raise awareness about the increasing demand for jute in the world market.
A Robust Virtual Inertia Control of Battery Storage System to Enhance Transient Stability of Grid System including Wind Farms
Authors: Sultana Rima , Hazari Md. Rifat , Mannan Mohammad Abdul , Tamura Junji
Published: July 2021

With the rising penetration of modern converter-based wind farm (WF) into the existing grid system deteriorates system inertia due to reduction of the capacity of conventional power stations which may lead to the frequency instability as well as power system transient instability. In order to solve this concern, this paper presents a robust virtual inertia control approach for battery storage system (BSS) to enhance the frequency stability of the grid system after the generation failure owing to severe grid disruption. The control approach integrated inertial controller based on the rate of change of frequency (ROCOF) and droop controller according to frequency deviation. The impacts of the proposed virtual inertia controller (VIC) is confirmed through simulation analysis on a multi-machine power system with conventional power stations, permanent magnet synchronous generator (PMSG) with full converter based WF and squirrel cage induction generator (SCIG) based WF. Simulation study clearly demonstrates that by adopting both strategies, the BSS can effectively minimize the frequency nadir and steady-state error.
Comparative Analysis of Program Outcomes Achievement between Face-to-Face and Virtual Classes during COVID-19 Pandemic
Authors: Ali M Tanseer , Rahman Md. Abdur , Lamagna Carmen Z.
Published: July 2021

Outcome based engineering education is a paradigm shift from traditional knowledge-based education to modern skill-based education. After the Washington Accord, the engineering education all over the world has adopted the new pedagogy for Engineering Education. But last year, after the hit of COVID – 19 pandemics, most of the education system has to move online. The online education platform raised a new challenge for Outcome Based Education. In this paper, the effect of Online education on OBE implemented B.Sc. in Electrical and Electronic Engineering program has been analyzed and the attainment performance of the Program Outcomes has been presented. With this empirical evidence it has been demonstrated that with careful implementation and encouragement OBE can achieve its potential even with Online education.
Design and Performance Analysis of a PV Control Scheme to Improve LVRT of Hybrid Power System.
Authors: Mahmud S. M. Istiaque , Mannan Mohammad Abdul , Hazari Md. Rifat
Published: July 2021

Solar power stations worldwide have been rising every year as well as the usage of sustainable power has increased. The addition into the traditional electricity grid networks of renewable sources such as the photovoltaic (PV) system is an essential challenge, given its erratic power generation. The major issue is to detach PV from the faulty grid, which leads to fluctuation in the system's interconnected PV system and system-wide energy interruptions. The low voltage ride through (LVRT) enables the PV scheme should stay linked to the grid even under fault situations in short periods and must assist the grid return to regular situations according to the modern grid codes. Hence, this paper develops and analyzes five aspects of control strategy to increase PV station's LVRT capability. The in-depth simulation of the independent units of the grid-connected large-scale PV farm is accomplished using PSCAD/EMTDC to assess the feasibility of the suggested control tactic for the modified IEEE nine-bus system.
Phenolic profile of grapevine cv. Tempranillo skins is affected by timing and severity of early defoliation
Authors: Moreno Daniel , Intrigliolo Diego S. , Vilanova Mar , Castel Juan R. , Gamero Esther , Valdés Esperanza
Published: July 2021

Aim of study: To investigate the effects of three early leaf removal treatments on the phenolic compounds of cv. ‘Tempranillo’ (Vitis vinifera L.) grape skins.Area of study: The experiment was conducted in a vineyard located in Requena, Valencia (South-eastern Spain) over two consecutive seasons.Materials and methods: Four treatments were investigated over two seasons in drip-irrigated vines: Control (C), non-defoliated and three defoliation treatment, applied at different phenological stages and intensities where all leaves from the first 6 nodes were eliminated just before flowering (ED) and at fruitset (LD). The fourth defoliation treatment was performed at the same time of ED but only the leaves facing east of the eight first nodes were removed (EED). At harvest, thirty-eight phenolic compounds were quantified by HPLC in the grape skins, including anthocyanins, flavanols, flavonols, hydroxycinnamic acids and their tartaric derivatives.Main results: A general increase of the skin phenolic compounds concentration was found in response to the defoliation treatments. The largest and more significant effects were observed for LD in 2009 with relative increases with respect to the un-defoliated vines of 14.8, 86.0, 119.0, and 75.9% for anthocyanins, flavanols, flavonols and hydroxycinnamates, respectively. On the other hand, EED did not clearly modify any polyphenolic compound. In addition, the response of phenolic families analyzed to defoliation treatments was different. Malvidine derivatives were not altered by any of the treatments, while the contents of quercetin and kaempferol derivatives and ferulic and coumaric acids, increased in both years when LD was applied.Research highlights: The defoliation effects on specific phenolic substances were dependent on timing, severity, and the season. Skin phenolic compounds increase in response to defoliation treatments and flavonols and hydroxycinnamates were the most affected families.
Prosecutorial Discretion at the Special Court for Sierra Leone: A Critique
Authors: Pamsm-Conteh Ishmail
Published: July 2021

Principle 1 of the International Law Commission demands that any person who commits an act which constitutes a crime under international law is responsible and therefore liable to punishment. This is supported by various other international treaties, obligations, and also under customary international law. The mandate of the Special Court for Sierra Leone (The Special Court) rests with United Nations Security Council Resolution 1315(2000); to prosecute those who bear the greatest responsibility for serious international crimes committed during the country’s civil war, which lasted from 1991-2002. To be clear, there were many protagonists in the conflict. However, the Special Court, which lasted between 2002 and 2012, prosecuted only thirteen members from selected groups, who were alleged to have committed such offences. Although there was considerable evidence to have supported additional prosecutions from the other warring factions in the conflict. As it was the responsibility of the Prosecutor to select those who were to be prosecuted; was the prosecutorial discretion robust enough in the case selection of those that were prosecuted, or was it a case of selective enforcement, or was it even discriminatory whilst trying to achieve the Court’s mandate? This paper aims to evaluate the exercise of prosecutorial discretion at the Special Court, with a view to determining, whether the manner in which it was exercised may have led to the Prosecutor underachieving the Court’s mandate.
The Local Wisdom Management Mohom for Stable Inherit and Lifelong Learning
Authors: Intem Nawatrot , Phuwanatwichit Thongchai , Sarobol Atchara , Wannapaisan Chetthapoom
Published: July 2021

This article aims to: (1) study the context of the local wisdom Mohom for self-reliance of Ban Thung Hong community, Phrae; and (2) to study the local wisdom management of Mohom for sustainable inheritance and lifelong learning, by implementing qualitative research methodology. Data collection was conducted by an in-depth interview on the community leader, the community philosopher, and Hom laborers, participatory and non-participatory observation, and collection of related secondary data. The results of the content analysis revealed that 1) The context of the local wisdom Mohom is related to participatory Hom management for self-reliance of the community in Phrae, via accumulation, transfer, and inheritance of knowledge from generation to generation. This is called “Hom Culture” which consists of self-reliance in three factors: (1) Hom Culture: community economy for self-reliance; (2) Hom Culture: social and cultural system for self-reliance; and (3) Hom Culture: natural resource and environmental management for self-reliance. Hom is therefore a culture that connects the community, and is significant for the community in Phrae to conserve the identity and value of the local wisdom, a foundation for self-reliance of the local community; and 2) Study on the local wisdom management of Mohom for sustainable inheritance and lifelong learning revealed that there are seven knowledge management processes in Ban Thung Hong community: 1) knowledge identification; 2) knowledge creation and acquisition; 3) knowledge organization; 4) knowledge codification and refinement; 5) knowledge access; 6) knowledge sharing; and 7) learning. Additionally, there also exists Hom cultural management in the community through the Mohom Dyeing Learning Center, in which community members design the communication process of Hom culture for participatory self-reliance in the community, and response to demands of the community via “Lifelong Learning” applied in the context of the community regarding learning among the members, or between members and teenagers, which eventually lead to the development of learning places, travel destinations, and local database as the learning sources of the community. Additionally, this allows those interested in the community, particularly the local young population, to study the community, which encourages “Strong Citizens of Phrae” via knowledge management, authority distribution, and educational opportunity creation, with the purposes to encourage equality and bonds in the community, alongside an appreciation of resources in one’s own community. One of the important expectations of the community is to preserve the lifestyle pattern of Hom culture, despite the social changes from external sources which influence the role of the community.
Obesity Acceptance: Body Positivity and Clinical Risk Factors
Authors: L. McWhorter Ketrell
Published: July 2021

Most people are aware of how they look and, whether poor or positive, have an opinion about their image. Social media influencers, pressure from societal norms, media images, and even friends and family can impact body image. Body positivity has undoubtedly gone mainstream. Included in this movement are obesity acceptance and its demarginalization. However, the acceptance of overweight and obesity may undermine the decades-long progress made toward reducing risk factors for cardiovascular disease (CVD). Obesity is a global epidemic disease with risk factors that include hypertension, inflammation, heart attack, stroke, and diabetes. Obesity is also associated with obstructive sleep apnea. Positive body image is an important component of overall health. However, also maintaining a proper clinical definition and self-perception of what constitutes “normal” weight, coupled with weight management, regular exercise, and monitoring blood pressure and blood sugar, will continue progress toward reducing the risk of cardiovascular disease.
Advanced Vehicles: Challenges for Transportation Systems Engineering
Authors: Giannattasio Orlando , E. Cantarella Giulio
Published: July 2021

Automatic vehicles represent one of the most active research fields within engineering. Among transportation systems engineering research topics, we highlight the need to update and/or develop new mathematical models, computer science methods and electronic technologies that contribute to the development of more effective, accurate and robust tools. In order to develop more effective models, it is advisable to consider the opportunity to interact with other specialists from sectors different of the transportation systems engineering to provide solutions to problems that may arise during the modeling and further new points of view. The main goal of this paper is discussing the most likely positive and negative effects of mixed flow expected in the near future, analyzing the main classifying criteria such as ownership, on-board technologies (sensor), and reviewing the most effective tools already available for macroscopic analysis of multi vehicle type transportation systems.
Modeling the Bulk and Nanometric Dielectric Functions of Au and Ag
Authors: Ait Hammou Brahim , El Kaaouachi Abdelhamid , El Oujdi Abdellatif , Echchelh Adil , Dlimi Said , Liang Chi-Te , Hemine Jamal
Published: July 2021

In this work, we model the dielectric functions of gold (Au) and silver (Ag) which are typically used in photonics and plasmonics. The modeling has been performed on Au and Ag in bulk and in nanometric states. The dielectric function is presented as a complex number with a real part and an imaginary part. First, we will model the experimental measurements of the dielectric constant as a function of the pulsation ω by appropriate mathematical functions in an explicit way. In the second part we will highlight the contributions to the dielectric constant value due to intraband and interband electronic transitions. In the last part of this work we model the dielectric constant of these metals in the nanometric state using several complex theoretical models such as the Drude Lorentz theory, the Drude two-point critical model, and the Drude three-point critical model. We shall comment on which model fits the experimental dielectric function best over a range of pulsation.
Reliability and Comparison of Some GEANT4-DNA Processes and Models for Proton Transportation: An Ultra-Thin Layer Study
Authors: Hoff Gabriela , S. Thomaz Raquel , I. Gutierres Leandro , Muller Sven , Fanti Viviana , E. Streck Elaine , M. Papaleo Ricardo
Published: July 2021

This chapter presents a specific reliability study of some GEANT4-DNA (version 10.02.p01) processes and models for proton transportation considering ultra-thin layers (UTL). The Monte Carlo radiation transport validation is fundamental to guarantee the simulation results accuracy. However, sometimes this is impossible due to the lack of experimental data and, it is then that the reliability evaluation takes an important role. Geant4-DNA runs in an energy range that makes impossible, nowadays, to perform a proper microscopic validation (cross-sections and dynamic diffusion parameters) and allows very limited macroscopic reliability. The chemical damage cross-sections reliability (experiment versus simulation) is a way to verify the consistency of the simulation results which is presented for 2 MeV incident protons beam on PMMA and PVC UTL. A comparison among different Geant4-DNA physics lists for incident protons beams from 2 to 20 MeV, interacting with homogeneous water UTL (2 to 200 nm) was performed. This comparison was evaluated for standard and five other optional physics lists considering radial and depth profiles of deposited energy as well as number of interactions and stopping power of the incident particle.
Learning from Bats to Escape from Potent or Severe Viral Infections
Authors: Kumar Vijay
Published: July 2021

The COVID-19 pandemic that started in December 2019 in Wuhan city, China has created chaos all over the world with over 185 million infection cases and 4 million deaths world-wide. The pathogen behind COVID-19 has been identified as severe acute respiratory syndrome Coronavirus 2 (SARS-CoV-2) that is more close to the previous SARS-CoV responsible for SARS epidemic 2002–2003. Although, SARS-CoV-2 also differs from SARS-CoV in many aspects as indicated by genetic studies. For example, SARS-CoV does not have a furin binding domain or site, whereas its presence in SARS-CoV-2 spike (S) protein increases its potential for infectivity. The horseshoe bats (Rhinolphus species) from China are considered as primary animal reservoirs for SARS-CoV and SARS-CoV-2. However, along with CoVs, bats also harbor many other viral pathogens (Ebola, Nipah, and Hendra viruses) without having serious infections. The bat physiology plays a crucial role in harboring these viruses along with adaptations to longevity and slow aging process. The immune system plays a crucial role in the clearance or establishment of the infection. Present chapter discusses different immunological aspects (innate immune response comprising the virus recognizing pattern recognition receptors (PRRs), type 1 interferon production, pro- and anti-inflammatory immune response, and adaptive immune response) that help bats to control viral infection without getting a severe infection as compared to other mammals, including humans.
Heidegger’s Encounter with Aristotle
Authors: Adluri Vishwa ,   Heidegger Circle
Published: July 2021

This paper examines Heidegger’s concept of facticity in his writings from the 1920s. The sudden ‘discovery’ of facticity in these writings and Heidegger’s subsequent engagement with Aristotle are related to a decision to rethink existence in terms of Luther’s and Paul’s interpretation of early Christianity. Central to this interpretation is the experience of the καιρός and the awaiting of the παρουσία. Heidegger argues that this primordial Christian experience (urchristliche Erfahrung) constitutes a fundamental experience (Grunderfahrung) of factical life and undertakes a destruction of Scholastic theology and the ancient and especially, Aristotelian, ontology upon which it is based.3 Heidegger’s philosophical project thus centers in the recovery of this fundamental experience of facticity through a destructive appropriation of the tradition. In this paper, I argue that one of Heidegger’s key strategies in turning to Aristotle is to exclude cyclical temporality - whether thought of as transmigration of the soul (Plato) or as eternal recurrence (Nietzsche) – which is incompatible with this Christian experience.