bluuebunny/crossref_metadata_2025 huggingface dataset:
Pencegahan Stunting Pada Anak Di Desa Tamangapa Kec. Ma’rang Kab. Pangkep
Authors: Puspitasari Ayu , Putra Wudi Darul , Amir Haeril
Published: July 2021

Pengabdian masyarakat ini dilaksanakan sebagai wujud Tri Dharma Perguruan Tinggi, pengabdian masyarakat dengan mengangkat tema penyuluhan pencegahan stunting pada anak bukanlah tanpa alasan tetapi melihat sebagian besar masyarakat belum paham dengan benar mengenai stunting, dan beranggapan bahwa stunting atau kerdil sebutan yang biasa digunakan di masyarakat adalah faktor keturunan. Kegiatan pengabdian pada masyarakat ini dilakukan untuk meningkatkan pengetahuan dan pemahaman serta peran serta masyarakat dalam program pencegahan dan deteksi dini stunting pada balita yang diharapkan secara langsung dapat memotivasi masyarakat untuk ikut serta memperhatikan pertumbuhan dan perkembangan pada anaknya sehingga pertumbuhan dan perkembangannya dapat optimal
Birth Preparedness Practice: Profiling Determining Factors for Male Involvement in Southern Nigeria
Authors: Dada Samuel , Okunola Oluseyi , Arulogun Oyedunni
Published: July 2021

Maternal mortality remains high in most African countries including Nigeria. Delays in seeking care for normal delivery and obstetric emergencies are the major determinants of maternal mortality. Birth Preparedness (BP) has been found to be very effective in reducing these delays. Females have always been focused on birth preparedness studies.  This study was however designed to investigate male involvement in the practice of birth preparedness in Southern, Nigeria. This was a descriptive study design using a validated structured interviewer-administered questionnaire. A multistage sampling technique was used to select 302 married men in the community. Knowledge on BP was measured on a 48-point knowledge scale and a 30-point practice scale was used to determine male involvement in BP. Data were analysed using descriptive and inferential statistics at p<0.05. The mean age of the respondents was 38.0 ± 8.6 years. Majority (59.9 %) of the respondents had good knowledge on birth preparedness. Mean score for level of involvement was 21.52±5.4 and 43.0% of the respondents had good score. Identified factors militating against male involvement in birth preparedness include low socioeconomic status, busy work schedule, cultural belief, and poor attitude of health workers.  There was significant association between knowledge of birth preparedness and religion as well as level of male involvement in BP (p=0.018; 0.001 respectively). This study showed low level of male involvement in birth preparedness. Several factors were identified to be responsible for this. There is therefore the need for sustainable community health education programmes to motivate and encourage male involvement in birth preparedness.
 
Keywords: Birth preparedness, Knowledge, Male involvement, Practices
Nutrient and Antinutrient Compositions of Some Edible Insect Species in Northern Nigeria
Authors: Oibiokpa Florence Inje
Published: July 2021

Nutrient and Antinutrient Compositions of Some Edible Insect Species in Northern Nigeria. The nutrient and antinutrient compositions of Moth caterpillar (Cirinaforda), Termite (Macrotermes nigierensis), Cricket (Gryllus assimilis) and Grasshopper (Melanoplus foedus) were determined. The proximate compositions were analysed using the methods of the Association of official Analytical Chemist while minerals were estimated using Atomic absorption spectrophotometry. The fatty acid profile of the oils extracted from the insects was determined by Gas chromatography/Mass spectrometry method. The vitamin and antinutrient composition of these insects were determined using standard laboratory methods. Termite was found to contain the highest amounts of moisture (4.50 Â± 0.12%), ash (8.00 Â± 0.12%) and fats (40.83 Â± 0.03%) while moth caterpillar was found to have the highest amount of crude fibre and carbohydrate (13.25 Â± 0.21%). Grasshopper was found to have the highest amount of crude protein (75.08 Â± 0.91 %) while termite contained the least amount of protein (43.75 Â± 0.03%). The Metabolisable energy of the insects were generally high and ranged from 392.83 Â± 0.35 kcal/100g  in grasshopper to 554.00 Â± 3.40kcal/100g in termite. Potassium was the most abundant mineral in all the insects. Palmitic acid was found in high amounts in termite (25.78%), moth caterpillar (20.78%) and grasshopper (21.15%) while cricket had the lowest palmitic acid content (1.69%). The essential fatty acids found in the insects were linolenic acid and linoleic acid. Moth Caterpillar had the highest amount of linolenic acid (28.69%) while grasshopper had the highest amount of linoleic acid (17.2%). Vitamin E was found to be the most abundant vitamin while vitamin B2 was the least abundant in all the insects analysed. Antinutrients in all the insects were within permissible limits and may not pose any threat to their usage as sources of food. These results have thus justified the consumption of these insects as food.
Production of Proteolytic Enzyme from Catfish Waste Using Bacillus subtilis, Proteus vulgaris, and Arthrobacter aurescens
Authors: Fajingbesi Aminat
Published: July 2021

The world marine captured fishes contribute to more than 50% of the total world fish production. About 70% of fish is processed before final sale, resulting in 20-80%  of  fish  waste  depending  on  the  level  of  processing  and  type  of  fish. The majority of fish wastes are disposed of in the ocean as well as on land. The discards from  the  processing  plants  amount  to  20  million  tonnes,  which  is  equivalent  to  25%  of  the  worldâ€™s  total  production  from marine captured fisheries. The fish processing industry generates considerable amounts of by-products such as waste that includes shells, scales, fins and bone frames. Interestingly, they are all often high in protein, which can be processed into useful products. Three organisms Bacillus subtilis, Proteus vulgaris, and Arthrobacter aurescens were isolated and used in the production of the proteolytic enzyme in three different protease production media. B. subtilis, P. vulgaris and A. aurescens were observed to have produced protease best at 48 hr of the second production, 72hr of the third production, and 72hr of first production, respectively. Fish waste should not be discarded into the environment, which can cause adverse effect on human health and environmental pollution, but rather they can be used in industries such as food industry in the production of baby foods to help break down the available protein into amino acids required by the body.
Antidiarrhoeal Activities of Ethanolic Extract of Aristolochia ringens Stem Bark in Castor Oil-Induced Diarrhoeal Albino Rats
Authors: Ibrahim Rasheed Bolaji , Sulyman Abdulhakeem Olanrewaju , Bamisaye Fisayo Abraham , Yusuf Lateefah Badrudeen
Published: July 2021

The antidiarrhoeal potentials of ethanolic extract of Aristolochia ringens stem back was evaluated in castor oil-induced diarrhoeal rats. The A. ringens stem back ethanolic extract was, in addition, screened for its phytoconstituents. Thirty albino rats of 150-180 g were randomized into six groups of five animals each for each of the three experiments and all administration were oral. Rats in groups I and II were administered 1.0 ml distilled water and 1% DMSO (Vehicle) respectively, while those in group III were administered 2.5 mg/kg b.wt loperamide hydrochloride as reference drug. Rats in groups IV, V and VI were administered 25, 50, and 100 mg/kg b.wt. ethanolic extract of A. ringens stem bark. The castor oil-induced diarrhoeal model was used, the weight and volume of the intestinal content was determined by enteropooling method and the intestinal motility was determined using activated charcoal method. The small intestine of the rats was also assessed for histopathological changes. The extract significantly and dose-dependently reduced the number of diarrhoeal faeces, the volume of intestinal accumulation and the distance moved by the fed charcoal in treated rats compared to the untreated diarrhoeal group (group II). The percentage inhibitions exhibited by the extract at 50 and 100 mg/kg body weight were significantly higher than that of the reference drug. Furthermore, the photomicrograph of the intestine of the extract treated rats showed intact intestinal architecture. Hence, ethanolic extract of Aristolochia ringens stem bark may contain phytochemicals with better antidiarrhoeal potentials which can be explored in the development of more viable antidiarrhoeal agents.
Challenges and Prospects of Internet Connectivity in Developing Universities in Nigeria. A Case Study of Fountain University, Osogbo.
Authors: Akinlolu A. O. , Azeez R. A. , Ayo S. A.
Published: July 2021

The Internet is a network of networks, which serves as a tool that provides the fastest and latest information on what goes on around the world. In Nigeria, a large number of Institutions are still lagging behind in the area of Internet provision and connectivity. This work focuses on the challenges and prospects of Internet connectivity in developing universities in Nigeria, taking Fountain University, Osogbo as a case study. Data were gathered from records and documents reviewed from the ICT Unit of the university. Assessment through logs, diaries and documentations with Internet network survey was carried out all over the campus. Technical and administrative challenges were found and some prospects were recommended.
Analysis of Experimental Solar Radiation Data for Osogbo, Nigeria
Authors: Yusuf Abdulhamid , Bolarinwa Hakeem , Animasahun Lukman , Babatunde Yinusa
Published: July 2021

An analysis of measured global solar radiation (GR) in Osogbo (7.77oN, 4.57oE, 288m) is presented in the form of hourly average, monthly average and percentage frequency distribution. The experimental data corresponds to a year data of 2017. The results reveal that the monthly average values of daily total radiation exhibit seasonal variation with maximum value in dry season month of March (16.59MJ/m2) and minimum value in wet season month of August (8.98 MJ/m2). The annual average GR value is 14.20 MJ/m2 while the annual cumulative GR is 5122 MJ/m2. The solar radiation climate of Osogbo has also been compared to those reported for a number of locations. The percentage frequency of days possessing irradiation rate greater than 15 MJ/m2 is 14 percent whereas that possessing less than 10 MJ/m2 is 61 percent. We conclude, based upon the above analysis that Osogbo is characterized by relatively low global solar radiation.
O ENSINO E A APRENDIZAGEM DA ARTE NO ENSINO FUNDAMENTAL: CONSIDERAÇÕES A PARTIR DO CURRÍCULO DA CIDADE DE SÃO PAULO
Authors: APERGUIS OLIVEIRA CLAUDIA ROBERTA
Published: July 2021

As reflexões acerca do conhecimento da Arte apresentam importantes contribuições às questões do ensino e da aprendizagem escolar. Por um lado, os educadores reconhecem ser ela um saber que necessita ser planejado de modo a garantir que os alunos desenvolvam capacidades artísticas que envolvem atitudes, procedimentos e conceitos. De outro, os estudantes podem ampliar seus repertórios estéticos e trocar experiências visuais, gestuais e sonoras que valorizam suas expressões, sentimentos e potencialidades. No ensino fundamental o ensino e a aprendizagem da Arte se constituem em um percurso que precisa ser organizado para que se favoreça os saberes e fazeres artísticos e, para tanto, as orientações curriculares tornam-se objeto de análise frente aos desafios das questões educacionais na contemporaneidade.
A IMPORTÂNCIA DO ENSINO RELIGIOSO NA EDUCAÇÃO
Authors: SALA DE OLIVEIRA PEREIRA DAMARES
Published: July 2021

O ensino religioso na escola, é um tema bastante discutível. Para alguns, esse tipo de conduta é substancial, enquanto, para outras, transcende algumas linhas e pode caracterizar uma perda na liberdade de pensamento dos estudantes daquela instituição. A vista disso, é fundamental se ter uma discussão clara e objetiva sobre o assunto, com o intuito de desmistificar pontos importantes e demonstrar a relevância e os benefícios de trabalhar a religiosidade no ambiente escolar. Carecemos sempre ressaltar que vivemos em um Estado laico, em um país que não tem uma religião obrigatória para os seus habitantes e que, respeita as mais diversas crenças existentes entre seu povo. Nesse contexto, o ensino religioso deve considerar a laicidade do Brasil e repassar esse conceito aos seus estudantes. Não objetivando a doutrinação a uma religião distinta, mas mostrando os credos que formam as principais religiões inseridas na nossa cultura
O PAPEL DO PSICOPEDAGOGO E SUA CONTRIBUIÇÃO PARA O AVANÇO DAS APRENDIZAGENS
Authors: KALBAITAZ DE OLIVEIRA KARLA NUNES
Published: July 2021

O presente artigo pretende discutir a temática: “O papel do psicopedagogo e sua contribuição para o avanço das aprendizagens”. Para isso, foi feita uma breve passagem sobre o processo histórico desde o surgimento da necessidade de se ter o profissional psicopedagogo. Discutimos principalmente sobre o seu papel na sociedade e seus campos de atuação. Citamos o fracasso escolar, pois sabemos que as dificuldades de aprendizagem implicam diretamente no trabalho do psicopedagogo. Desta forma, a procura por este profissional se dá justamente por causas das dificuldades de aprendizagens. A família e a escola buscam neste profissional o acompanhamento necessário para superação destas dificuldades, uma vez que o psicopedagogo estuda os processos de aprendizagens e este poderá observar por meio das consultas todo o movimento que está relacionado ao processo de ensino aprendizagem do aprendente, desde padrões patológicos e normais, até a influência do meio em que a criança vive. O psicopedagogo precisa conhecer as principais correntes teóricas da psicopedagogia, pois irá se identificar com um autor para embasar seus atendimentos. É preciso que se tenha consciência de que para obter o avanço das aprendizagens, se faz necessária a participação de uma equipe multidisciplinar, assim como da família também. Por fim, comprova-se que os encaminhamentos feitos por estes profissionais e o acompanhamento do psicopedagogo contribuem de fato para o avanço das aprendizagens dos aprendentes.
GESTÃO EDUCACIONAL E SEUS DESAFIOS NA ESCOLA PÚBLICA
Authors: LUCAS MOREIRA CARDOSO RONNY
Published: July 2021

Este artigo tem por objetivo analisar questões fundamentais e os novos desafios à gestão escolar, em face das novas demandas que a escola enfrenta, no contexto de uma sociedade que se democratiza e se transforma. O contexto das políticas educacionais vigentes, que privilegia o mérito, traz uma perspectiva de gestão sustentada em elementos oriundos da área da administração, como a eficiência e a eficácia, que conduzem os gestores a buscar os melhores resultados, com o mínimo de recursos. Ao situar esta discussão no cotidiano da escola, verifica-se que o compromisso estabelecido pelos órgãos de gerenciamento da educação parece não ser com os alunos ou com a escola, mas com os resultados obtidos, desconsiderando, muitas vezes, o processo vivenciado pela comunidade escolar para alcançá-los. Nesse sentido, a reflexão sobre a prática, sustentada em referenciais teóricos como Schön (1992) e Alarcão (2011), é capaz de colaborar com o desvelamento das contradições existentes no cotidiano, que dicotomizam o pensar e o agir, assim como os processos e os produtos. Dentro desse contexto surgiu o presente estudo que objetiva investigar uma experiência de gestão na construção de uma escola reflexiva, evidenciando os desafios presentes neste processo. A estratégia de aproximação com a realidade utilizada foi a entrevista reflexiva com uma das gestoras acerca do cotidiano escolar como espaço para reflexão. Os resultados apontam que a vivência da reflexão junto ao coletivo que compõe a escola é um desafio que demanda preparo, abertura para o diálogo e respeito às diferenças, podendo ser considerada como uma experiência de desenvolvimento profissional/pessoal para os sujeitos e de desenvolvimento institucional para a escola No contexto da educação brasileira, tem sido dedicada muita atenção à gestão na educação que, enquanto um conceito novo, superar o enfoque limitado de administração, se assenta sobre a mobilização dinâmica e coletiva do elemento humano, sua energia e competência, como condições básicas e fundamentais para a melhoria da qualidade do ensino.
REGRAS E LIMITES
Authors: RESENDE BARRETO ZAMBON THAIS
Published: July 2021

Devido à necessidade de estabelecer limites e regras, para um bom relacionamento, procuramos identificar as disposições que a criança possui a fim de conseguir se apropriar dos valores e de sua cultura; reconhecendo a importância do sujeito, das regras e dos limites na educação infantil. Essa construção de limites e regras, pensada não como um produto, mas como uma constante produção puramente dialógica, é uma construção sócia histórica, produzida por sujeitos que se afetam por um contexto. Pensar na Importância da Construção dos Limites e regras na Educação Infantil é possibilitar à criança o exercício da autonomia para se expressar e de sensibilidade e respeito ao outro para acolher diferentes opiniões e sentimentos. A criança não está sozinha nessa caminhada, a família e a escola são os seus alicerces, pois essas crianças estão cheias de ideias, hipóteses, vontades, gostos, teorias e de convicções pessoais que são muito profundas. Os seres humanos são criativos, produzem novos conhecimentos com base nos já adquiridos, e a família tem a responsabilidade pela formação do indivíduo, e a escola, por sua vez, formação. Portanto, a família e a escola devem trabalhar unidas, tendo como meta a formação integral da criança.
Predictions for ‘Purbachal’: Learning from ‘Dhanmondi’
Authors: Ibrahim M. Arefeeen , Shoma Ajmeri Nusrat , Tariq Saiful Hasan
Published: July 2021

Township planning was introduced from early ‘50s in Dhaka, the capital city of Bangladesh having a current population of 14 million approximately. To meet the demand of growing number of population, Dhaka has witnessed different new township projects from the ‘60s to ‘90s. Example of some of these similar developments by government, includes Dhanmondi, Banani, Gulshan, Uttara, Baridhara etc. Hence, old Dhaka city is expanding its civic facilities by urbanizing in the vicinity of city. Under this scenario, a new township project, Purbachal New Town, was planned by concerned government organization namely “Rajdhani Unnayaan Kortipokkha” (RAJUK) which was previously called “Dhaka Improvement Trust” (DIT). This new township is much larger than any other previously planned ones in Dhaka city. This paper aims to compare Purbachal New Town with a previous Development, Dhanmondi Residential Area, which was designed by the same Capital Development Auhtority (RAJUK/DIT) in early ‘50s. The comparison takes place in terms of road network and land-use. Future possible impact of traffic situation on newly designed master plan in Purbachal is also sought for. Findings from the study show some similarities in master plan of Purbachal with existing Dhanmondi, which may create similar situation of current Dhanmondi in proposed Purbachal New Town too.
Assessing Walkability of Planned and Historical Streetscape of Urban Dhaka
Authors: Siddiqua Farzana , Kabir Saimum , Taher Mania Tahsina
Published: July 2021

Urban mobility is one of the pressing challenges Dhaka City facing today. Existing car based mobility network has already proven ineffective and thus leads to congestion, inequity and unhealthy urban environment. Even though largest portion of city population travels by walk, pedestrian mobilityhas been severely compromised especially in newly planned residential areas. Streets here are planned considering automobile as a primary mode of transport; a comfortable setting of walkable streets is almost nonexistent. However, the historic core of the city is an exception where streets are seen dominated by the pedestrian. The paper presents a comparative study of the walkability between planned (Bashundhara R/A) and historic (Shakhari bazar) urban area while taking into account the importance of active mobility for a healthy urban development. The study starts with reviewing theoretical constructs of ‘pedestrian-friendly community development’ while looking into case studies and urban standards in order to synthesize ‘walkability’ matrices. Multiple tools are used to measure walkability of the street. Maps are studied to analyze the physical context of selected urban area, scientific tools are used to collect site specific microclimatic data, observation and questionnaire surveys are conducted to understand user’s response. The aim is to formulate a checklist of walkable streetscape in the context of Dhaka, Bangladesh. The study identifies the physical (height width ratio, vegetation, water features, orientation) and functional attributes (location of amenities, infrastructure, safety) of street fabric has strongimpact on improving walkability.
Effects of Doping Concentration on Device Performance of GaN-based Nano-regime MOSFETs
Authors: Bin Taher Md Iktiham , Hasan Md. Tanvir
Published: July 2021

Gallium nitride (GaN) based metal-oxide semiconductor field-effect transistors (MOSFETs) are promising for switching device applications. The doping of n- and p-layers is varied to evaluate the figure of merits of proposed devices with a gate length of 10 nm. Devices are switched from OFF-state (gate voltage, VGS = 0 V) to ON-state (VGS = 1 V) for a fixed drain voltage, VDS = 0.75 V. The device with channel doping of 1×1016 cm-3 and source/drain (S/D) of 1×1020 cm-3 shows good device performance due to better control of gate over channel. The ON-current (ION), OFF-current (IOFF), subthreshold swing (SS), drain induce barrier lowering (DIBL), and delay time are found to be 6.85 mA/μm, 5.15×10-7 A/μm, 87.8 mV/decade, and 100.5 mV/V, 0.035 ps, respectively. These results indicate that GaN-based MOSFETs are very suitable for the logic switching application in nanoscale regime.
Optimized High Performance Characteristics of a designed 450 nm InGaN/AlGaN True Blue Laser Considering Different Injection Current
Authors: Baker Sayed Muhammod , Basak Rinku
Published: July 2021

In this work, the effects on the performance characteristics of a In0.1558Ga0.8442N / Al0.0416Ga0.9584N 3QW separate confinement heterostrcture 450 nm true blue edgeemitting laser are presented by considering different injection current. At the temperature of 300 K, the threshold current of the laser is 11 mA. The peak material gain for the designed laser is obtained as 1106 cm-1 and further used for the analysis of the performance characteristics of the designed doubleheterostructure laser for the variation of injection current. The injection current can be applied to the device is at around 12 to 15 times of the threshold current. At the value of injection current 152 mA, the maximum output power of the laser is 256.4 mW, the maximum resonance frequency is 14.5 GHz and the corresponding modulation bandwidth is 25.3 GHz at the temperature of 300 K.
A Comparative Analysis between Low Loss Kagome Structured THz Hollow Core and Porous Core PCF
Authors: Islam Mohaiminul , Hossain Md. Anwar , Haque Fahmida
Published: July 2021

This paper presents a comparative study between a porous core kagome lattice photonic crystal fiber (PCF) and a air filled Hollow core kagome lattice PCF (HC-PCF), which acts as a low loss and polarization maintaining tera hertz (THz) waveguide. Proposed PCFs are simulated using finite element method (FEM), including the effective material loss (EML), confinement loss and single mode propagation. Cyclic olefin copolymer, also known as TOPAS material have been chosen for the air micro structured inhibited coupled design of PCF which has the lowest bulk material absorption loss of 0.2 cm-1. Expressions are given to asses this optimization and the result are shown for the variation of core diameter from 425 μm to 600 μm for both the Hollow core and porous core PCFs and for the comparison with porous core the optimized porosity taken as 60% and 70% along with the frequency of 1THz. The analysis results approximately 80% to 90% improvement in losses in case of passing THz waves through HC-PCF rather than Porous core PCF. By varying core parameter such as core porosity and core diameter and strut width at 1THz, the goal is to show an optimized solution consisting of low EML and confinement loss for both of the wave guidance and comparing the results to analyze and hence finding out a better solution.
Socioeconomic factors associated with overweight and obesity: A case study among adult people of Bangladesh
Authors: Bhuyan K. C. , Ahmmed Md. Mortuza
Published: July 2021

The analysis is done using the data collected from 785 adults of randomly selected families of 207 students of American International University - Bangladesh. The respondents are classified by levels of Body Mass Index (BMI). Among the respondents 86.4% are in the obese and overweight group and the prevalence of Non-communicable diseases (NCDs) and diabetes are higher among them. The important variables for the higher prevalence of overweight and obesity are residence, age, occupation, marital status and income. The obesity is more among the urban people. It is also more among aged persons, service and retired persons. The prevalence of diabetes is more among obese and overweight group of respondents.
Effect of Hall Current on MHD Non-Newtonian Unsteady Casson Fluid Porous Rotating Disk Flow with a Uniform Electric Field
Authors: Maleque Kh. Abdul
Published: July 2021

The effects of Hall current and a uniform electric field on non-Newtanian casson fluid porous rotating disk flow are examined. A uniform angular velocity, an axial uniform magnetic field and the Hall current are taken into considered. Examples of Casson fluid include jelly, tomato sauce , honey , soup and concentrated fruit juices, ect. Human blood can also be treated as Casson fluid. Considering the suitable similarity parameters the governing equations of the problem are then transformed into the non-linear ordinary differential equations. The ordinary similarity differential equations are then solved numerically by six order Runge-Kutta method and shooting method using the Nachtsheim- Swigert iteration technique.
Design and Analysis of Logic Gates using GaN based Double Gate MOSFET (DG-MOS)
Authors: Arnub Md Ibnul Bin Kader , Ali M Tanseer
Published: July 2021

The double gate MOSFET, where two gates are fabricated along the length of the channel one after another. Design of logic gates is one of the most eminent application of Double Gate MOSFET. Gallium nitride (GaN) based metal-oxide semiconductor field-effect transistors (MOSFETs) are shown to be promising for digital logic applications. This paper describes the design and analysis of different types of logic gates using GaN based DG-MOSFET. The gate length (LG) is kept constant at 10.6 nm. The gate voltage varies from 0 to 1 V for the device switching from turn OFF to turn ON-state. For the device with HfO2 as gate oxide, the ON-state current (ION) and OFF-state current (IOFF) are found 8.11×10-3 and 6.38605×10-9A/μm respectively. The leakage current is low for the device with HfO2 as compared to that for the device with ZrO2. The subthreshold swing (SS) is 68.7408 mV/dec for the device with HfO2.
Investigating Students’ Adoption and Usage Behavior of Educational Technology(EduTech) at Tertiary Level (PLS-SEM Approach)
Authors: Amin Md Khaled , Rahman Mohammad Arifur , Khan Tahsina , Karim Mubasshir Tahmidul
Published: July 2021

This study sought to examine students’ behavioral intention to use EduTech (Educational Technology) at the tertiary level education in Bangladesh. Using the unified theory of acceptance and use of technology (UTAUT) model as a base theory, the study attempted to explore the determinants that are swaying students’ intention to adopt EduTech in Bangladesh. A total of one-hundred and forty-nine respondents were chosen randomly from three faculties of AIUB such as Business administration, Engineering and Science, were finally provided with the structured and self-administrated questionnaires followed by brief instructions to fill out the questionnaire. Moreover, collected data were encoded into SPSS for descriptive analysis such as demographic analysis, while SEM simulation, namely SMART PLS 2.0 was employed to analyze reliability and to test the hypotheses stated. Result of the study confirmed that the adoption and the usage behavior of EdTech at the tertiary level is highly influenced by Effort Expectancy, Facilitating Condition, and Perceived Behavioral Control. Findings of the study could be an important outline for educators, EduTech vendors, and service providers for formulating effective adoption strategies with regard to EduTech resources.
Design, simulation and optimization of a single stage Low Noise Amplifier (LNA) for very low power L- Band satellite handheld applications
Authors: Uzzal Mohammad Mohiuddin
Published: July 2021

In first stage of each microwave receiver, there is a Low Noise Amplifier (LNA) stage, and this LNA plays an important role to determine the quality factor of the receiver. The design of a LNA requires the trade-off of many important parameters including gain, Noise Figure (NF), stability, power consumption, cost and design complexity. In this paper, we have designed and simulate a single stage stable LNA circuit having gain 11.78 dB and noise figure 1.86 dB using microwave BJT AT3103 with Agilent package Advance Design Systems (ADS). This LNA operates at center frequency of 2 GHZ and it can be used in L-Band satellite modem for tracking applications.
A Novel Design and Performance Analysis of an ISM Band Antenna for Biomedical Applications
Authors: Al- Faruk Abdullah , Basak Rinku
Published: July 2021

Biomedical application is an advancing sector of research work which permits the development of a transmission link from a living body to an extrinsic device. A microstrip patch antenna is proposed in this paper for biomedical applications. The antenna is designed to operate in the Industrial, Scientific and Medical (ISM) band (2.4 – 2.4835 GHz). The thickness of the antenna is only 2.3 mm which implies that the antenna is reliable to operate under bent conditions. The dimension of the proposed antenna is 28.5 mm x 28.5 mm x 2.3 mm. In this antenna, Copper is used as the patch material and FR-4 is used as the substrate material. Three-layer human tissue model is used to analysis the performance of the antenna. Computer Simulation Technology (CST) software is used to designed the antenna and analysis the performance parameter of the antenna such as the return loss (S11 parameter), radiation pattern, operating frequency, directivity, gain, total efficiency under normal and bent conditions on the human tissue model. Performance analysis is also observed for different substrate material, different patch material, and different types of human tissues and comparison analysis of S11 parameter for the planar and bent condition. Among all of the substrate materials, FR4 provides the good antenna performance. Finally, Specific Absorption Rate (SAR) and thermal loss are evaluated to comply with the antenna safety issues.
Social Internet of Things (SIoT) Enabled System Model for Smart Integration of Building‟s Energy, Water and Safety Management: Dhaka City, Bangladesh Perspective
Authors: Rahman Md. Samin , Kabir Md. Humayun
Published: July 2021

Dhaka, being the largest township of Bangladesh City Buildings is excreted by in-migration, a rapid growth of population, withering of living and infrastructure standard, which eventually is threatening overall sustainability and well beings. Modernization and digitalization of building infrastructure is not only an important step towards resolving the problems but also it will be a facilitator for smart, efficient and optimized urbanization. On May 2018, the authors conducted a survey among 51 Residential Building’s owner/building managers, 25 Non-residential Building’s owner/building managers and 25 corporate building’s owner/building managers to find market adoptable IoT solutions for building’s smart efficient energy, water and safety managements. The features requested in this survey are optimized and implemented by the authors and finally, here the system model with simulation results is presented. This system shows promising energy, water resource management optimization and some intriguing factors that validate its objectives, social characteristics, market usability.
Genre of Bangla Music: A Machine Classification Learning Approach
Authors: Bhowmik Abhijit , Chowdhury AZM Ehtesham
Published: July 2021

The necessity for designing autonomous indexing tools to establish expressive and efficient means of describing musical media content is well recognized. Music genre classification systems are significant to manage and use music databases. This research paper proposes an enhanced method to automatically classify music into different genre using a machine learning approach and presents the insight and results of the application of the proposed scheme to the classification of a large set of The Bangla music content, a South-East Asian language rich with a variety of music genres developed over many centuries. Building upon musical feature extraction and decision-making techniques, we propose new features and procedures to achieve enhanced accuracy. We demonstrate the efficacy of the proposed method by extracting features from a dataset of hundreds of The Bangla music pieces and testing the automatic classification decisions. This is the first development of an automated classification technique applied specifically to the Bangla music to the best of our knowledge, while the superior accuracy of the method makes it universally applicable.
Gate Length Effect on Gallium Nitride Based Double Gate Metal-Oxide-Semiconductor Field-Effect Transistor
Authors: Islam Md Rabiul , Hasan Md Kamrul , Mannan Md Abdul , Ali M Tanseer , Hasan Md Rokib
Published: July 2021

We have investigated the performance of Gallium Nitride (GaN) based Double-Gate (DG) Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET). Atlas Device Simulation Framework -Silvaco has been used to access Non-Equilibrium Green Function to distinguish the transfer characteristics curve, ON state current (ION), OFF-state current (IOFF), Drain Induced Barrier Lowering (DIBL), Subthreshold Swing, Electron Current Density, Conduction Band Energy and Electric Field. The concept of Solid state device physics on the effect of gate length studied for the next generation logic applications. GaN-based DG MOSFETs shows better performance than Si-based Single gate MOSFETs. The proposed device has drawn the attention over conventional SG-MOSFET due to fas switching performance. The device turn on and turn off voltage is respectively VGS=1V(On state) and VGS-0V(OFF State). To validate our simulation tool and model results, previous research model has been investigated using Silvaco Atlas and the results obtained are compared to the previous results.
Effect on human health by residues of commonly used pesticides in vegetables cultivation
Authors: Khalil Farzana , Maruf Maliyat Tarannum , Islam Mohammad Tariqul , Rabbani Mohammad Mahbub , Ahmed S. Mosaddeq
Published: July 2021

People in Bangladesh are over scared for toxicity of vegetables & fruits because of the educational level of the farmers is not up to the mark, farmers apply pesticides randomly on agricultural fields without maintaining pre-harvest intervals and dose. The aim of this work was to study dissipation pattern of some pesticides in some vegetables kept at room temperature which represent market condition and to identify and quantify pesticides applied on some vegetables. By interviewing the farmers three commonly used pesticides; cypermethrin, chlorpyrifos and fenvalerate were sprayed in the farmer’s fields of the western part of Bangladesh. Samples were extracted by QuEChERS method, cleaned-up by adsorption chromatography technique, and analyzed by GC-ECD. Recoveries were found to be between 87-107% with RSD lower than 10% at three spiking levels. Matrix matched calibration curves were linear for all the analytes with r2 ≥ 0.99. LODs were found to be 0.01 mg/kg for cypermethrin and 0.002 mg/kg for both of fenvalerate and chlorpyrifos. The samples of same cultivar’s variety were purchased from the markets of Savar, Mymemsingh and Cumilla. Our finding showed only the presence of cypermethrin in tomato but the values were below MRL and no pesticide residue was found in eggplant.
A Comprehensive Study of Real-Time Vacant Parking Space Detection Towards the need of a Robust Model
Authors: Mahmud Rifath , Saif A. F. M. Saifuddin , Gomes Dipta
Published: July 2021

Detection of vacant parking space is becoming a challenging task gradually. Space utilization and management of vehicle space is now a demandable field of research. Searching for an empty parking space in congested traffic is a time-consuming process. The existing vacant parking space detection methods are not robust or generalized for images captured from different camera viewpoints. Finding a proper parking space in a busy city is really a challenging issue and people are facing this problem on a daily basis. The main purpose of this research is to comprehensively discuss the previous researches of vacant parking space detection and compare them from different aspects. Methods used in previous researches are descriptively discussed along with their advantages and disadvantages. The frameworks of previous researches were compared on six generalized phases and the experimental results are compared in terms of dataset, accuracy, processing time and other performance measures.  This research also focuses on the challenges of vision-based vacant parking space detection which will contribute to future researches and researchers can work to overcome these challenges.
Secured Question Paper Management System
Authors: Rahman S. M. Tawhidur , Iftekhar Md. Nashif , Alam Rashedul , Gafur S. M. Raihan , Nandi Dip
Published: July 2021

The examination is one of the essential parts of the student’s life. After learning from an institution, the students must attend and pass various types of examinations to get their certificates. In this process, sometimes students try to pass the examination by answering the leaked questions. From the beginning of making the question papers to delivering them to the students is now at stake in the existing question management system due to question leakage. So, the traditional way of managing the question papers needs to be changed so that it can stop the leakage of question papers. To secure the question papers and making a trustworthy, physical existence free, and affordable a system is proposed in this paper. To design this model, we have used the concept of Blockchain, Digital Signature, Randomization, OTAC.
Diagnosis of COVID-19 Infected Lungs from Chest X-Ray Images
Authors: Niloy Ta-Seen Reaz , Rahman Md. Abdur
Published: July 2021

Severe Acute Respiratory Symptom Coronavirus 2 (SARS-CoV-2) was newly discovered as a beta coronavirus. The virus-induced unexplained etiological pneumonia and is referred to as the 2019 Coronavirus Disease (COVID-19). Though the disease has appeared in a new way, there is no medication for transited patients. So, for diagnosing the COVID-19 infected lungs from X-Ray images, an automated technique has been suggested in this manuscript. In this study, Convolutional neural network (CNN) and VGG19 were used and found accuracy scores of 97% and 67%, respectively. The comparative analysis shows that the proposed method performs better than the solution that exists. Eventually, Precision, Recall, and F1-Score have been extracted and interpreted the model's loss functions in the research. This research has carried out by focusing on essential aspects in terms of COVID-19. Therefore, for the diagnosis of coronavirus infection, the technique can be used effectively.
Factors, Observed During Covid Covid-19 to Overcome Financial Crisis: A Case of Bangladesh
Authors: Uddin Ashraf , Hasan Md. Manzurul , Islam Md. Siyamul , Onik Md. Mehedi Hassan
Published: July 2021

Covid-19 has furiously affected the world economy. Despite the world’s suffering, Bangladesh has shown a new model of surviving from devastating financial crisis. There are several factors, rarely observed during the pre-pandemic period, helped Bangladesh to stand up adopting the new normal. We have identified that the factors were not directly the results of Government policies, but the necessity people had to change to live the new normal. In this paper, several directions of financial activities and sectors have been explored with evidence and insights in the context of Bangladesh.
Predicting Spread, Recovery and Death Due to COVID-19 using a Time-Series Model (Prophet)
Authors: Mahmud Sk. Golam , Mishu Mahbub C. , Nandi Dip
Published: July 2021

The world is facing its biggest challenge since 1920 due to spread of COVID-19 virus. Identified in China in December 2019, the virus has spread more than 200 countries in the world. Scientists have named the virus as Novel Corona Virus (belongs to SARS group virus). The virus has caused severe disruption to our world. Educational institutions, financial Services, government services and many other sectors are badly affected by this virus. More importantly, the virus has causeda massive amount of human deaths around the world and still its infecting people every day. Scientist around the world are trying to find a solution to stop the COVID-19. Their solutions include identifying possible effective vaccine, computeraided modelling to see the pattern of spread etc. Using Machine Learning techniques, it is possible to forecast the spread, death, and recovery due to COVID-19. In this article, we have shown a machine learning model named as Prophet Time Series Analysis to forecast the spread, death, and recovery in different countries. We train the model using the available historical data on COVID-19 from John Hopkins University’s COVID-19 site. Then we forecast spread, death, and recovery for seven days using a well known forecasting model called Prophet. This interval can be increased to see the effect of COVID-19. We chose 145 days of historical data to train the model then we predict effect for seven days (15 June 2020 to 22 June 2020). To verify out result, we compare the predicted value with actual value of spread, death and recovery. The model provides accuracy over 92% in all the cases. Our model can be used to identify the effect of COVID-19 in any countries in the world. The system is developed using Python language and visualization is also possible interactively. By using our system, it will be possible to observe the effect of spread, death and recovery for any countries for any period of time.
Design and Development of Citizen Surveillance and Social-Credit Information System for Bangladesh
Authors: Shuvo Anjir Ahmed Chowdhury , Chowdhury Sabrina Kashem , Hanif Md , Nosheen Sadia Noor , Zishan Md. Saniat Rahman
Published: July 2021

Most of the areas of Bangladesh face a wide range of threats, ranging from terrorism and civil unrest to kidnapping, rape and murder. To reduce the impact of these threats, it is critical for the authorities to capture real-time information onwhat is happening in and around the city. Therefore, there is a growing requirement for utilizing the new and emerging technologies to make our cities safer. The development of the monitoring system in the technological field has become a blazing topic in the milieu of scholars and AI techniques have become an essential part of the future era. With the help of AI & deep learning, we can evaluate the social behavior (Action Recognition) of people, and by implementing the social credit score system, we can mark the citizen’s activities & analyze them. To detect and recognize the actions of a human we used YOLOV2 architecture and also incorporated the SQL database (SQLite) to record the social credit score. A citizen can visualize their credit score from an HTML based website.
Effect of Asiatic mangrove plant (Rhizophora mucronata) extract on the growth and virulence of Vibrio harveyi causing bioluminescence disease in Penaeus monodon larviculture
Authors: Kannappan Sudalayandi , Sivakumar Krishnamoorthy , Jithendran Karingalakkandy P. , Sivamani Balasubramaniam , Praveena Peter E.
Published: July 2021

Aim of the study: Vibrio harveyi bacteria are affecting shrimps during grow-out practices. The application of chemicals to control V. harveyi has resulted in antibiotic‐resistance among bacteria. An extract of the leaves of Rhizophora mucronata was tested to control the growth and virulences of V. harveyi.
Area of study: This study was conducted in the Crustacean Culture Division of ICAR-CIBA, Chennai city, Tamil Nadu State, India.
Material and methods: R. mucronata plants were collected from the Pitchavaram area, and the leaves contents extracted. The resultant extract was prepared and tested against the growth of V. harveyi and its virulence factors. The various functional compounds of R. mucronata were screened and volatile compounds were analyzed.
Main results: When R. mucronata extract was treated against V. harveyi (350 µg/mL) an inhibitory zone of 14 ± 0.1 mm was observed. At 300 µg/mL, the extract was found to be active in decreasing the luciferase to a maximum of 76 counts per second in 30 days and a similar level of bioluminescence was reduced in 15 days. During, shrimp larviculture a reduction in the cumulative percent of mortality 15.70% (p<0.033) was observed when treated with the extract of R. mucronata.
Research highlights: When extract (200 μg/mL) of R. mucronata was tested against V. harveyi during Penaeus monodon larviculture, the V. harveyi counts decreased (p<0.049). Volatile compounds viz, tetramethyl-6,7,8,8a-tetrahydro-5H-naphthalene-1-one (38.63%), squalene (31.19%), α-amyrin, (7.07%) and β-amyrin (8.75%) were detected. It would be desirable to use crude extracts of R. mucronata during shrimp culture to control V. harveyi.
Significance of vesicles in flap monitoring in oral cancer surgery: Report of two cases
Authors: Sakamoto Yuki , Yanamoto Souichi , Umeda Masahiro
Published: July 2021

The success rate of vascularized free flap transplantation in head and neck oncologic surgery is high, ranging from 94% to 98.8%; however, flap necrosis sometimes occurs after surgery. When vessel-related complications occur, flap necrosis proceeds rapidly. Thus, flap monitoring after surgery is especially important. We recently treated two patients with flap-related complications. A vesicle appeared on the surface of the flap and enlarged within a short time; the flap’s color changed to purple, and a reoperation was eventually performed. While there are approaches to monitor flaps, this is the first report suggesting the assessment of vesicle formation for flap monitoring, since the vesicles occur several hours before changes in the flap color.