bluuebunny/crossref_metadata_2025 huggingface dataset:
PENINGKATAN HASIL BELAJAR MATEMATIKA MATERI PERKALIAN MELALUI PENERAPAN MODEL NHT (NUMBERED HEAD TOGETHER) DI MADRASAH IBTIDAIYAH
Authors: Khotimah Siti Husnul , Krisnawati Nofi Maria
Published: November 2021

AbstractThis study aims to explain the application of NHT learning to improve student learning outcomes at MI Fatahillah Pancoran, South Jakarta. The research method used was Classroom Action Research, with a sample of 28 class III students. The instrument used in the form of Learning Implementation Plan (RPP), Observation Guidelines, Interview Guidelines, and Tests In this study conducted as many as 2 cycles, the first cycle consisted of 3 meetings and the second cycle consisted of 2 meetings. The results showed that the activities of students experienced significant changes. The average post-test score of cycle I was 72.5, increasing to 84.4 in cycle II and the average N-gain in cycle I ranged from 0.38 and increased to 0.51 in cycle II. Based on these learning outcomes it can be proven that the application of NHT learning can improve student learning outcomes especially in Mathematics Multiplication material. Keywords: earning outcomes, NHT learning models Abstrak Penelitian ini bertujuan untuk menjelaskan penerapan pembelajaran NHT dapat meningkatkan hasil belajar peserta didik di MI Fatahillah Pancoran Jakarta Selatan. Metode penelitian yang digunakan adalah Penelitian Tindakan Kelas, dengan sample berjumlah 28 peserta didik kelas III. Instrumen yang digunakan berupa Rencana Pelaksanaan Pembelajaran (RPP), Pedoman Observasi, Pedoman Wawancara, dan Tes Pada penelitian ini dilakukan sebanyak 2 siklus, pada siklus I terdiri dari 3 kali pertemuan dan siklus II terdiri dari 2 kali pertemuan. Hasil penelitian diperoleh bahwa aktifitas peserta didik mengalami perubahan yang signifikan. Nilai rata-rata post-test siklus I sebesar 72,5 meningkat menjadi 84,4 di siklus II dan rata-rata N-Gain pada siklus I berkisar 0,38 dan meningkat menjadi 0,51 pada siklus II. Berdasarkan hasil belajar tersebut dapat dibuktikan bahwa penerapan pembelajaran NHT dapat meningkatkan hasil belajar peserta didik khususnya pada pelajaran Matematika materi Perkalian.Kata-kata kunci: hasil belajar, model pembelajaran NHT
STRATEGI GRAPHIC ORGANIZER WHAT HAPPENED DAN MOTIVASI BELAJAR TERHADAP KETERAMPILAN MENULIS NARASI PESERTA DIDIK KELAS V GUGUS I KECAMATAN PADANG UTARA
Authors: Yetra Triyana
Published: November 2021

Abstract               This study aims to test the influence of strategic Graphic Organizer What Happened and motivation to writing narrative skills grade V students claster I North Padang district. Used quasy experiments with design factorial design  2 x 2. Experimental group and control recruited cluster random sampling. Subject totaling 61 people class V year 2016/2017. Test performance used to measure the writing skills narrative learners and questionnaire is used to measure the motivation students. data were analyzed with test t-test and analysis of variance two-way. The results showed that there were significant differences in learning outcomes between students with high and low motivation who used graphic organized strategy what happened with students who were taught using conventional strategies, There was no significant interaction between graphic organized strategy what happened and motivation for narrative writing skills student. No significant interaction between the strategy Graphic Organizer What Happened and motivation to writing skills narrative students. Keywords: Strategic Graphic Organizer What Happened, motivation, writting narative Abstrak               Penelitian ini bertujuan untuk menguji pengaruh Strategis Graphic Organizer what Happened dan motivasi terhadap keterampilan menulis narasi siswa kelas V gugus I Kabupaten Padang Utara. Jenis penelitian yang digunakan adalah quasy eksperimen dengan desain faktorial desain 2 x 2. Pngambilan kelas eksperimen dan kontrol menggunakan tekni Cluster Random Sampling. Subjek berjumlah 61 orang kelas V tahun 2016/2017. Tes unjuk kerja digunakan untuk mengukur kemampuan menulis narasi peserta didik dan angket digunakan untuk mengukur motivasi peserta didik. Data dianalisis dengan uji t-test dan analisis varian dua arah. Hasil penelitian menunjukkan bahwa terdapat perbedaan hasil belajar yang signifikan antara siswa dengan motivasi tinggi dan rendah yang menggunakan startegi Graphic Organized What Happened dengan peserta didik yang diajar menggunakan strategi konvensional. Tidak ada interaksi yang signifikan antara strategi Graphic Organizer What Happened dan motivasi untuk keterampilan menulis narasi siswa. Kata kunci: Strategi Graphic Organizer What Happened, motivasi belajar, menulis narasi
LEMBAR KERJA PESERTA DIDIK (LKPD) PADA PEMBELAJARAN TEMATIK KURIKULUM 2013
Authors: Pulungan Marwan , Usman Nuraini , Suratmi Suratmi , Suganda M Vina Amilia , Harini Bunda
Published: November 2021

AbstractThe implementation of class action research by teachers in elementary school is one of the supporters in enhancing the learning process and learning outcomes of students. It aims to help teachers develop innovations in learning, so that the problems in classroom learning can be minimized. This training aims to provide understanding of PTK and LKPD to the PGSD partner elementary school teachers, to motivate PGSD partner elementary School teachers to implement PTK to improve the learning process in the classroom with the help of LKPD. This activity is a guided training. Originating from SD Negeri 68 Palembang which amounted to 20 participants. Training on the creation and use of PTK and LKPD in the teachers of SD Negeri 68 Palembang positively impact the knowledge and self-development for teachers. Key Words: Class action research, LKPD AbstrakPelaksanaan Penelitian Tindakan Kelas oleh guru di Sekolah Dasar merupakan salah satu pendukung dalam meningkatkan proses pembelajaran dan hasil belajar siswa. Hal ini bertujuan agar guru mengembangkan inovasi dalam pembelajaran, sehingga permasalahan yang dalam pembelajaran di kelas dapat diminimalisir. Pelatihan ini bertujuan memberikan pemahaman tentang PTK dan LKPD pada guru-guru SD Mitra PGSD, memotivasi guru-guru SD Mitra PGSD agar dapat menerapkan PTK untuk meningkatkan proses pembelajaran di kelas dengan bantuan LKPD. Kegiatan ini merupakan pelatihan terbimbing. yang berasal dari SD Negeri 68 Palembang yang berjumlah 20 peserta. Pelatihan pembuatan dan penggunaan PTK dan LKPD pada guru-guru SD Negeri 68 Palembang berdampak positif terhadap pengetahuan dan pengembangan diri bagi Guru. Kata-kata Kunci: LKPD, Pembelajaran Tematik K13
PENGEMBANGAN BAHAN AJAR BERBASIS PENDIDIKAN KARAKTER
Authors: Alwi Zahra , Ernalida Ernalida , Lidyawati Yenni
Published: November 2021

AbstractThe problems discussed in this paper are, "How are the teaching materials that can push towards the creation of human beings who have IPTEK and also IMTAQ, facing the challenge of the Industrial Revolution of 4.0?" Elementary school teacher Education is one of the important containers to make the world of education play a role in facing the challenges of the current revolution. For that it needs to be developed and compiled the latest teaching materials based on character education. By preparing teaching materials that contain character education values that are in line with the access of learning and curriculum, will be produced graduates who not only have high knowledge and skills, but also have a attitude, personal and social, which is capable. Through the literature and research results, in this paper presented product development based on character education, which can be a reference for the development and preparation of teaching materials at the basic level, as a shoulder effort in the planting of positive attitudes to learners.  Keywords: teaching materials, character education, IPTEK and IMTAQ, the challenge of Industrial revolution Abstrak            Permasalahan yang dibahas dalam makalah ini adalah, “Bagaimanakah bahan ajar yang dapat mendorong ke arah terciptanya insan-insan yang memiliki IPTEK sekaligus juga IMTAQ, menghadapi tantangan revolusi industri 4.0?” Pendidikan Guru Sekolah Dasar merupakan salah satu wadah yang sangat penting untuk menjadikan dunia pendidikan berperan dalam menghadapi tantangan revolusi saat ini. Untuk itu perlu dikembangkan dan disusun bahan ajar yang mutakhir yang berbasis pendidikan karakter. Dengan menyiapkan bahan ajar yang memuat nilai-nilai pendidikan karakter yang sejalan dengan capaian pembelajaran dan kurikulum, akan dihasilkan lulusan yang tidak hanya memiliki pengetahuan dan keterampilan yang tinggi, tetapi sekaligus memiliki sikap, personal dan sosial, yang mumpuni. Melalui kaji literatur dan hasil penelitian, dalam makalah ini disajikan produk hasil pengembangan berbasis pendidikan karakter, yang dapat menjadi acuan untuk pengembangan dan penyusunan bahan ajar di tingkat dasar, sebagai upaya yang pundamen dalam penanaman sikap-sikap positif kepada pembelajaran. Kata-kata kunci: bahan ajar,  pendidikan karakter, IPTEK dan IMTAQ, tantangan revolusi    industri
PENINGKATAN AKTIVITAS DAN HASIL BELAJAR TARI MELALUI METODE TUTOR SEBAYA DI SDN 05 KOTA BENGKULU
Authors: Zarnita Elfa , Anggraini Nike
Published: November 2021

This study aims to determine the increase in activity and student learning outcomes in dance subjects through the Peer Tutor Method for students of SDN 05 Kota Bengkulu. The research was conducted in February 2019. The subjects in this study were class Va. The methods used in collecting data are observation, interview and documentation. This research is a classroom action research using 2 cycles. Each cycle consists of four stages, namely: planning, implementing actions, observing and reflecting and evaluating. The instruments used were observation sheets, research sheets, questionnaire, interview guidelines and field notes. The results showed that there was an increase in activity and student learning outcomes in class Va SDN 05 Bengkulu City. The increase in students can be seen from the increase in the quality of the learning process as shown by the increase in learning outcomes, enthusiasm and activeness of students when participating in learning. The improvement of the learning process is seen from an increase in the score and the average learning outcomes before and after the action is taken. The average value before the action was 46.18. In the first cycle the average increased to 65.78 and in the second cycle it increased to 82.65. The average increase has increased by 36.47 and fulfills the minimum passing grade (KKM) 75. From the results of this study, it is known that through the sebay tutor method, the activity and learning outcomes of SDN 05 Bengkulu City students in class Va. Keywords: Activities, Dance Learning Outcomes, Peer Tutors
MODEL PEMBELAJARAN SCRAMBLE UNTUK MENINGKATKAN HASIL BELAJAR IPS SISWA KELAS V SD NEGERI 2 PALEMBANG
Authors: Handini Gian
Published: November 2021

The purpose of this study was to improve the social studies learning outcomes of fifth grade students of SD Negeri 2 Palembang by applying the Scramble learning model. This research is a Classroom Action Research. The subjects in this study were class V.B SD Negeri 2 Palembang, with a total of 29 students, 16 male students and 13 female students. This research was conducted in several stages, namely planning, implementing, observing, and reflecting. Data collection techniques using tests, observation and documentation. This research was conducted in three cycles, each cycle consisting of two meetings. The results of this study indicate that there is an increase in student learning outcomes and student activeness by applying the Scramble learning model. The improvement of student learning outcomes in cycle I 21 students (72.41%), cycle II 23 students (79.31%), cycle III (96.55%). While the results of observations of student learning activities increased from the first cycle of meeting 1 by 65.08%, meeting 2 65.51%, cycle II meeting 1 66.38% and meeting 2 increasing to 70.69%, and meeting III meeting 1 of 77.59% and meeting 2 increased to 84.05%. Thus it can be concluded that the application of the Scramble learning model can improve social studies learning outcomes for fifth grade students of SD Negeri 2 Palembang.Keywords: learning outcomes, Scramble learning model, social science.
PEMBELAJARAN DI SEKOLAH DASAR DARI PRESPEKTIF MULTILITERASI DAN KETERAMPILAN BERPIKIR TINGKAT TINGGI (KBTT)
Authors: Hartati Tatat
Published: November 2021

The 21st century needs quality human resources to respond to the changes in the industrial revolution era 4.0. These all-new demands require breakthroughs in terms of thinking and action if you want quality output that can compete with global and open-ended global work. However, the facts show that Indonesia's latest literacy ranking is in the second position from the bottom of the 61 countries studied. Indonesia is only better off Bostwana, a country in the South African region. In terms of reading skills, the INAP concludes, among others: students are not accustomed to answering questions that require high level interpretation and special terms (non common sense), texts that require the ability to imagine, explain, and have opinions. Thus, multiliteracy education and higher order thinking skills (KBTT) need to be intensified.Key words: multiliteration, higher order thinking
MEDIA PEMBELAJARAN TEMATIK KURIKULUM 2013 BAGI GURU-GURU SD NEGERI 2 PALEMBANG
Authors: Pulungan Marwan , Usman Nuraini , Toybah Toybah , Maharani Siti Dewi , Suganda Vina Amilia
Published: November 2021

Learning media is one of the supporters in the success of the learning process and student learning outcomes. Thematic learning in elementary schools in the 2013 curriculum, it is deemed necessary to be equipped with learning media in the learning process in the classroom. It is intended that teachers develop innovations in learning by being able to create and use learning media, so that problems in the classroom can be minimized. This training aims to provide understanding and motivate the teachers of SD Negeri 2 Palembang to be able to create and use thematic learning media in the 2013 curriculum to support the learning process in the classroom. This activity is a guided training. who came from SD Negeri 2 Palembang, amounting to 20 participants. Training on the creation and use of thematic learning media in the 2013 curriculum has a positive impact on knowledge and self-development for teachers of SD Negeri 2 Palembang. Key Words: media, thematic learning, 2013 curriculum
PEMAHAMAN GURU SEKOLAH DASAR TERHADAP PENILAIAN BERBASIS HOTS DI KOTA PALEMBANG
Authors: Handini Ela Okta , Asnimar Asnimar , Laihat Laihat
Published: November 2021

Teachers’ understanding is important in preparing assessment based on Higher Order Thingking Skills (HOTS) in elementary school learning in the city of Palembang. This research is a qualitative descriptive study. The research subjects were teachers who taught Grade VI Elementary Schools in Palembang, which amounted to 8 people. The research instrument used was a questionnaire. The results showed that the understanding of elementary school teachers in the city of Palembang was 71.87% in the good category. However, the teacher's understanding when differentiating between HOTS and not HOTS shows that the category is sufficient with 57.5% of teachers being able to distinguish between HOTS questions. Teachers still experience problems in preparing HOTS-based assessment instruments for learning in elementary schools that showed 78,125%. Based on the results of this study, it is necessary to develop guidelines for developing HOTS-based assessment instruments for learning in elementary schools.Keywords : Understanding, Assesment, HOTS
PENINGKATAN HASIL BELAJAR DARING PESERTA DIDIK SELAMA PANDEMI COVID-19 MELALUI PEMANFAATAN FITUR APLIKASI ZOOM DI SD NEGERI 77 PALEMBANG
Authors: Gunawan Indra
Published: November 2021

This Classroom Action Study was aimed at describing the online learning outcomes improvement and learning process of Grade VI students in Public Elementary School 77 Palembang through the using of Zoom Aplication. The research was conducted through two cycles of action. The diagram shows that the exhaustiveness increased from cycle I at 47% to 88% after cycle II. The learning outcomes also improved from cycle I to II at 63.8 and 82.9 respectively. This study concluded that through the using of Zoom Application, there will be improvement at online learning outcomes in thematic learning.Keywords: Learning Outcomes, Online Learning, Zoom Application
Pourquoi le data challenge est un dispositif pédagogique efficace ?
Authors: MAMAVI Olivier , ZERBIB Romain
Published: November 2021

Le data challenge est un dispositif d’apprentissage à l’intersection entre pédagogie de projet, innovation ouverte et business game. Il s'agit d'une modalité d'apprentissage qui permet de favoriser, à travers une expérience  originale, une montée en compétences effective et mesurable.
Experimental Modal Analysis of a Linear Reciprocating Tribometer for Maximum Reciprocating Frequency
Authors:   Department of Mechanical Engineering, College of Engineering, Trivandrum, (CET) Thiruvananthapuram, 695 016, INDIA, Viswanathan Harish Thetanikkal , John Prem Kumar ,   Department of Mechanical Engineering, College of Engineering, Trivandrum, (CET) Thiruvananthapuram, 695 016, INDIA, Rajalekshmi Rajeev Vamadevan ,   Department of Mechanical Engineering, College of Engineering, Trivandrum, (CET) Thiruvananthapuram, 695 016, INDIA
Published: November 2021

This work demonstrates estimation of critical reciprocating frequency of a fabricated linear pin-on-reciprocating plate tribometer by modal analysis. Experimental investigation by impact testing and numerical analysis using ANSYS Work bench 14 were performed to extract the modal parameters of individual subsystems. The authors could not find reported literature on of estimation of critical reciprocating frequency of pin-on-reciprocating plate tribometer. Authors developed a pin-onreciprocating plate tribometer that can simulate friction and wear under reciprocating sliding conditions for stroke lengths up to 150 mm. The developed pinon- reciprocating plate tribometer had a loading sub system, transmission subsystem and measurement subsystem. From experimental and numerical estimation of modal parameters, transmission subsystem found to had the lowest modal frequency of 18 Hz. Maximum frequency of reciprocation then fixed at 30% of the lowest modal frequency of 18 Hz that is 5 Hz. Confirmatory friction tests were then conducted on the tribometer and found that identification of maximum frictional force was difficult when the reciprocating frequency of plate of tribometer exceeded 4 Hz due to vibrations in measuring system and agreed with the reported literature. This work addresses the need of methodology for establishing critical reciprocating frequency of tribometer. This paper elaborates the modal analysis of a fabricated linear reciprocating tribometer. Resonance of subsystems in reciprocating tribometer affects experimental estimate of coefficient of friction (CoF). Subsystems have their own individual modal frequencies. Hence, modal analysis of all subsystems becomes obligatory. Tribometer developed for this study can simulate reciprocating friction and wear for stroke lengths up to 150 mm. Experimental and numerical analysis utilized to identify modal frequency of individual subsystems. Tests identified that transmission subsystem had the lowest modal frequency of 18 Hz. Maximum frequency of reciprocation then fixed at 4Hz. This is 25% of the lowest modal frequency of 18 Hz as delineated in literature. Confirmatory friction tests then conducted on the tribometer. Resolving maximum frictional force along the stroke length was impossible over 4 Hz of reciprocating frequency. This is 25% of the lowest modal frequency of structure and agreed with the reported literature. Authors sincerely hope the methodology used in this paper will guide fellow researchers for modal analysis of reciprocating tribometer.
A Statistical Optimization of Convective Drying of Corn Kernels in a Fluidized Bed Dryer
Authors:   Department of Chemical Engineering, Shroff S R Rotary Institute of Chemical Technology, Ankleshwar, Gujarat, India 393135, Gautam Shina , Gautam Alok ,   Department of Chemical Engineering, Shroff S R Rotary Institute of Chemical Technology, Ankleshwar, Gujarat, India 393135, Mahant Bhavik ,   Department of Chemical Engineering, Shroff S R Rotary Institute of Chemical Technology, Ankleshwar, Gujarat, India 393135
Published: November 2021

Food storage is an essential process for food security and it needs to be free from any biological contamination. For the same, agriculture produce needs to be completely dried before sending for storage. The present work discusses a systematic approach to model drying parameters of corn kernels in a fluidized bed dryer. Experiments were designed according to a higher level Box-Behnken design combined with response surface methodology. Four parameters were chosen to vary namely: amount of corn kernels (50 -100 gm), temperature of drying (50 – 80⁰C), air velocity (6.01 – 8.08 m/s) and drying time (30 – 60 min) for experiments as well as for the model. The reduction of moisture content was determined after each experiment for understanding the behaviour of drying process. The model equations were obtained and surface response plots were generated in MATLAB to investigate the drying behaviour of corn kernels with all four parameters. Ultimately, this work represents the dependence of moisture removal on all four parameters chosen with efficient use of response surface methodology and Box-Behnken design. Analysis of variance confirmed that velocity of air and amount of corn are the most significant parameters along with temperature and time of drying. Optimum condition with the model were obtained as 50 gm of corn kernels, 80 ⁰C drying temperature, 8 m/sec velocity of air, and 60 min time of drying for 73.3 % of moisture from corn kernels.
Effects of pounding on the behavior of reinforced concrete frame structures in seismic zone 2B
Authors:   Department of Civil Engineering, University of Engineering and Technology, Peshawar, Pakistan, Hamid Muhammad , Ur Rahman Fayyaz ,   Department of Civil Engineering, University of Engineering and Technology, Peshawar, Pakistan, Ali Qaisar ,   Department of Civil Engineering, University of Engineering and Technology, Peshawar, Pakistan
Published: November 2021

Pounding between adjacent buildings is a common phenomenon which can be observed during moderate to high ground shakings that can result in structural damage and even loss of life. As this phenomenon is related to the life safety, therefore, it is imperative to consider it in the modelling stage of structural analysis and design. The current study is intended to evaluate, numerically, the effect of pounding phenomenon in RC frame structures. Three dimensional models of two hypothetical buildings are analyzed by subjecting to three ground acceleration histories that are scaled and matched with BCP-SP07 design spectrum. The analysis results such as inter storey drift, maximum displacement, pounding forces and its effects on bending moment, axial forces, shear and torsional forces in structural members are compared. The results show that pounding forces decrease with increase in gap size and are dominant in top five stories with maximum force at the top floor level. Pounding increase displacement up to 2 times and acceleration up to 240 times as compared to without pounding case. Pounding increase the axial forces up to 250 times and bending moment up to 2 time in the beams parallel to colliding forces. Similarly, the shear forces and torsional moments are almost doubled as a result of pounding. Finally, a 20 storey building consists of four blocks separated by 3-inch expansion joints is modelled combinedly in Etabs and analyzed to see the effect of pounding. Based on the results it is concluded that pounding must be considered at modelling stage of the design to account for the forces induced in the structural members.
Grey FNN control and robustness design for practical nonlinear systems
Authors:   Guangdong University of Petrochem Technol, Sch Sci, Maoming 525000, Peoples R China, Chen ZY , Meng Yahui ,   Guangdong University of Petrochem Technol, Sch Sci, Maoming 525000, Peoples R China, Wang Ruei-yuan ,   Guangdong University of Petrochem Technol, Sch Sci, Maoming 525000, Peoples R China, Chen Timothy ,   Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA 91125
Published: November 2021

To ensure asymptomatic stability and improve vehicle ride comfort, this paper develops a fuzzy neural network (FNN) based on the evolved bat algorithm (EBA) to design adaptive backstepping controllers with gray signal predicators. A recoil method is used to evaluate the nonlinearity of the controlled systems and to derive the control law which is evolved for the tracking of the signals. A group of grey differential equations are applied for the grey model (GM) (n, h), which is an active model where h is the number of considered variables and n is the order of the grey differential equations. In the article, the Discrete GM (2.1) is used to obtain the advanced motion of the nonlinear system, so that the command controller can prove the Lyapunov stability and feasibility of the entire scheme through the Lyapunov-like lemma. The controller design criteria are demonstrated for mechanical elastic wheels (MEW) to establish a viable mathematical framework for the new wheels.
RE-EVALUATION OF THE EGYPTIAN CODE OF HOUSING AND ENERGY CONSUMPTION WITH EMPHASIS ON SHADING DEVICES ROTATION ANGLES
Authors:   Assistant Professor, Department of Architecture and Environmental Design, Arab Academy for Science and Technology, Sheraton, Cairo, Egypt, M.Kamel Tarek
Published: November 2021

The passive system technique is dynamically used as an alternative to the active system, in order to minimize the peak loads and the total EUI in kWh/ m2 for any building prototype. Sun breaker or shading device is a basic traditional method and Mashrabiya previously used for privacy and reduces the heat gained and emitted from sun`s rays, in addition to the fabricated wood material and its specs of bad conductor. the study aims to investigate the effect of rotational shading devices around the y-axis, will the rotation have a significant impact on the EUI or not? The research methodology is built upon generative modeling tool of parametric design, Rhinoceros Version 6.0, with the cooperation of Grasshopper, Ladybug& Honeybee, and Toolbox. Five hundred running simulations are carried out to determine the optimal angle of rotation with maximum reduction in cooling loads, and the interpretation is 30°. Two linear regression equations are derived out of this valuable study to deduce the correlation between independent and dependent variables when the sun breaker material is matt or reflective, and how the total EUI kWh/m2 can be minimized?
An intelligent transportation system for forecasting wireless communication network issues with cyber attacks
Authors:   Research scholar, ECE Department, K L University, Vaddeswaram, Guntur, A.P,India, Khan M. Khaleel Ullah
Published: November 2021

This paper propose a method to design an “Intelligent Transportation System” for forecasting wireless communication network issues with cyber attacks. Wireless communication networks(WCN) is a broadly classified and critical gateway for any communication devices because the wireless communication networks is operated at various frequency ranges in different locations. In order to maintain its performance and also to prevent any attacks due to its high data handling, we need an Intelligent transportation system (ITS) to analyse and detect the cyber-attacks before going to implement it in real time transportation. In general wireless communication networks is an IEEE 802.11 standard which can be operated at physical Transfer control protocol/Internet protocol(TCP/IP) layer as well OSI model. In this paper a novel approach to design, analyse and detect cyber-attacks is proposed for wireless communication networks transport system, called Intelligent transportation system (ITS) based cyber-attack detection. Stacked firewall system is used for reducing fake attacks and detecting real time attacks in transportation system. Hence any fake attacks or real time attacks captured by the ITS will be informed to the system controller to make decision to whether it is a false-positive or real attack. ITS is the main process of the stacked firewall system which in turn take responsible to control, maintain, and prevent any cyber-attack.
A technical review of no-reference image quality assessment algorithms for contrast distorted images
Authors:   Department of Mathematical Sciences and Computer Application, Bundelkhand University, Jhansi, India., Mittal Preeti , Saini Rajesh Kumar ,   Department of Mathematical Sciences and Computer Application, Bundelkhand University, Jhansi, India., Varghese Justin ,   Karpagam College of Engineering, Coimbatore, India, Jain Neeraj Kumar ,   Department of Mathematical Sciences and Computer Application, Bundelkhand University, Jhansi, India.
Published: November 2021

Automatic image quality assessment similar to human vision perception is an essential process for real-time image processing applications to perform perceptual image assessments for effectively achieving their goals. As no-reference image quality assessment (NR-IQA) schemes perform perceptual assessments of images without any information about their original version, these algorithms suit real-time computer vision techniques because of the non-availability of reference images. Contrast and colorfulness play important roles in determining the quality of color images. By combining many IQA metrics, a number of combined metrics had been devised. This study provides an insight into major NR-IQA methods and their effectiveness in assessing contrast, colorfulness, and overall quality of contrast-degraded images with technical analysis. The effectiveness of top-ranking NR-IQA methods is experimentally assessed with benchmark assessment methods on images from benchmarked databases. The study provides insight into open research challenges in the area of NR-IQA for developing new promising methods by clearly demarcating the difficulties of top-ranking NR-IQA methods.
The Study of 3D Reaching Tasks on Visual Servoing Using Quaternion
Authors:   College of Mechanical Engineering, Guangxi University, Nanning 530004, Guangxi, China, Zhu Liucun , Luo Junqi ,   College of Mechanical Engineering, Guangxi University, Nanning 530004, Guangxi, China, Chen Mingyou ,   Advanced Science and Technology Research Institute, Beibu Gulf University, Qinzhou, 535000, Guangxi, China, Deng Haofeng ,   Advanced Science and Technology Research Institute, Beibu Gulf University, Qinzhou, 535000, Guangxi, China
Published: November 2021

The image-based monocular visual servoing is difficult to realize the grasping task on three-dimension. This study presented a method of quaternion on 3D reaching tasks of visual servoing. This method used a camera and a laser scanner to acquire the information of the images and the depth. Then the parameters of Jacobian matrix could be determined by the method of the quaternion. A particular constraint mechanism was also proposed to optimize the reaching trajectory of the robot. The simulation results demonstrated our proposed method could implement the 3D reaching tasks successfully and had a significant performance improvement compared to conventional methods.
A hybrid sentiment analysis approach using black widow optimization based feature selection
Authors:   Research Scholar in Department of Computer Science and Engineering, Vellore Institute of Technology, Chennai Campus, India., Daniel Anand Joseph , Meena M Janaki ,   Professor in the School of Computing Science and Engineering at VIT Chennai.
Published: November 2021

With the massive development of Internet technologies and e-commerce technology, people rely on the product reviews provided by users through web. Sentiment analysis of online reviews has become a mainstream way for businesses on e-commerce platforms to satisfy the customers. This paper proposes a novel hybrid framework with Black Widow Optimization (BWO) based feature reduction technique which combines the merits of both machine learning and lexicon-based approaches to attain better scalability and accuracy. The scalability problem arises due to noisy, irrelevant and unique features present in the extracted features from proposed approach, which can be eliminated by adopting an effective feature reduction technique. In our proposed BWO approach, without changing the accuracy (90%), the feature-set size is reduced up to 43%. The proposed feature selection technique outperforms other commonly used Particle Swarm Optimization (PSO) and Genetic Algorithm (GA) based feature selection techniques with reduced computation time of 21 sec. Moreover, our sentiment analysis approach is analyzed using performance metrics such as precision, recall, F-measure, and computation time. Many organizations can use these online reviews to make well-informed decisions towards the users’ interests and preferences to enhance customer satisfaction, product quality and to find the aspects to improve the products, thereby to generate more profits.
Combined effect of ‘biodiesel, ethanol, exhaust gas recirculation and magnetization of fuel’ on the performance and emission parameters of diesel engine.
Authors:   Department of Mechanical Engineering, Shri Vaishnav Vidhyapeeth Viswavidyalaya, Indore 453111, Madhya Pradesh, India, Chandravanshi Ajay , Pandey Shrikant ,   Department of Mechanical Engineering, Shri Vaishnav Vidhyapeeth Viswavidyalaya, Indore 453111, Madhya Pradesh, India, K. Malviya Rakesh ,   Department of Mechanical Engineering, Shri Vaishnav Vidhyapeeth Viswavidyalaya, Indore 453111, Madhya Pradesh, India
Published: November 2021

Utilization of biodiesel as alternative fuel results in higher emission of oxides of nitrogen (NOx) and reduced performance parameters. Exhaust gas recirculation (EGR) is a great technology to control the emission of NOx, but use of EGR reduces the performance parameters of diesel engines. Oxidative addition and magnetization of fuel help to make the combustion complete. In the present investigation, Jatropha biodiesel has been used with diesel in the form of a blend having 20% biodiesel (BD20) as fuel in 4-stroke, direct ignition, diesel engine. 5% Ethanol (E5) has been used as additive along with biodiesel blends and 10% EGR. The magnetization of fuel (MF) has been done with the help of a permanent magnet having strength of 3000 gauss. The results of this investigation show that BD20 is beneficial as fuel for reducing emissions like Carbon Mono-oxide, Hydro-Carbon, and smoke but it reduces Brake Power and Brake Thermal Efficiency. BD20E5 gives better performance parameters than the BD20, but the emission of HC increases slightly. 10% EGR reduces NOx emission with a small cost of performance parameters but with MF performance and emission parameters were improved.
The simulation of indoor daylight glare based on the location
Authors:   Research Institute of Photonics, Dalian Polytechnic University, Dalian, 116034, China, Liu Xin , Wei Shuo ,   Research Institute of Photonics, Dalian Polytechnic University, Dalian, 116034, China, Meng Linlin ,   Research Institute of Photonics, Dalian Polytechnic University, Dalian, 116034, China, Cao Guanying ,   Research Institute of Photonics, Dalian Polytechnic University, Dalian, 116034, China, Deng Qiguang ,   Research Institute of Photonics, Dalian Polytechnic University, Dalian, 116034, China
Published: November 2021

Because well-being and energy efficiency are both important issues in building, there is an increase need for comfort and energy saving. Some critical factors affecting them are still not clear. This paper firstly investigated the influence of the orientation of the window on indoor daylight glare. Secondly, the influence of longitude and latitude on indoor daylight glare, and the distribution of daylight glare in China by using K-Nearest Neighbor algorithm (KNN algorithm) were studied. Daylight Glare Probability (DGP) was used as glare evaluation index in the study. The results show that daylight glare is the most serious in the west and south, then in the east and the least in the north for the window of the room in different orientations. The glare gradually increases with the increase of the latitude of the cities at the same longitude. The effect of the longitude of the cities at the same latitude on glare has no specific linear relationship. We also get the glare situation of cities without meteorological files by investigating the distribution of daylight glare in China.
An integrated Fuzzy DEMATEL and Fuzzy Cognitive Maps approach for the assessing of the Industry 4.0 Model
Authors:   Industrial Engineering Department, Sakarya University, Sakarya, Turkey., Erkan Enes Furkan , Uygun Özer ,   Industrial Engineering Department, Sakarya University, Sakarya, Turkey., Kiraz Alper ,   Industrial Engineering Department, Sakarya University, Sakarya, Turkey., Canpolat Onur ,   Industrial Engineering Department, Sakarya University, Sakarya, Turkey.
Published: November 2021

Today, organizations are experiencing problems due to advancements in the environment, community, economy, and technology. In the future, physical and virtual systems, including the whole chain from product design to the distribution to customers and feedback will be required to overcome problems for organizations. Thus, companies need to comprehend and apply Industry 4.0. The most frequently encountered situation in the literature is the absence of research based on the practical experience of Industry 4.0 processes. In this study, the analysis of 9 concepts (Strategy, Leadership, Customers, Products, Operations, Culture, People, Governance, and Technology) is performed by utilizing the fuzzy DEMATEL and fuzzy AHP methods. As a result of both methods, Technology, Operations and Strategy concepts are obtained as the three most important concepts in the same rank in both methods. There is no significant change in the rank of the other concepts. Although close rankings are obtained from both methods, considering the interaction between the concepts and avoid shortcomings of consensus in the method, the ranking obtained by the fuzzy DEMATEL method is preferred to use as input in Fuzzy Cognitive Maps (FCMs). Then a relation map is formed based on their interaction and three alternative scenarios are created for FCMs from defuzzified total relation matrix data. As a result of scenarios, it is more useful for organizations to apply the Industry 4.0 processes to transfer their resources to their activities concerning the Strategies, Technology, and Operations concepts. The aim is to predict the maturity levels of Industry 4.0 of organizations for the future by employing the FCMs methodology. Thanks to the introduced model based on the integration of fuzzy DEMATEL and FCMs, an insight is provided into which concepts should be prioritized about Industry 4.0.
Synthesis of Zinc Fluoroborate by Wet Method and Its Application as a Flame Retardant for Cotton Fabrics
Authors:   Department of Bioengineering, Faculty of Engineering and Natural Sciences, Malatya Turgut Ozal University, Malatya, Turkey, Aydın Duygu Yılmaz , Gürü Metin ,   Department of Chemical Engineering, Faculty of Engineering, Gazi University, Ankara, Turkey
Published: November 2021

In this study, zinc fluoroborate was synthesized by wet method using fluoroboric acid and zinc oxide as reactant and its usability as flame retardant for cotton fabrics was investigated. The wet method is economical, green, efficient and applicable for a large-scale. The maximum yield was determined related to the variation of reactant ratio, temperature, reaction period and stirrer rate. The characterization of the product was carried out by means of FTIR, BF4- ion selective electrode and XRD. The maximum yield of 97% was achieved at the reactant mole ratio (nZnO/nHBF4) of 1:3, temperature of 90 °C and reaction period of 90 minutes. The purity of the synthesized product was found as 98 %. Flame retardancy and high temperature resistance effects of zinc fluoroborate on cotton fabrics were investigated by LOI test and high temperature durability test method, respectively. Although LOI value of the untreated original fabric was determined as 16, this value increased above 55 by impregnating of fabric with 50 % zinc fluoroborate solution.
Prediction of 3-dimensional heat treatment model during the friction stir spot welding of AA 6061
Authors:   Mechanical Engineering department, Kamla Nehru Institute of Technology, Sultanpur -228118 –India, Jaiswal Ritesh , Singh Rajnish ,   Mechanical Engineering department, Kamla Nehru Institute of Technology, Sultanpur -228118 –India, Rizvi Dr. Saadat Ali ,   Faculty member, University Polytechnic, Jamia Millia Islamia, New Delhi 110025
Published: November 2021

In this research work, a die steel tool was used to join the two aluminium sheets together on a radial drill machine. For this, a cylindrical-shaped tool was fabricated. This tool is then clamped into the drill machine tool post. This rotating tool is then inserted/indented into the workpiece thus generating heat due to friction. The of the deformation of aluminium starts near the vicinity of the die steel tool impression. The tool transferred the soft material from the tip to the plunger. The plunger is in contact with the Aluminum sheet. Soften material is forged on the sheet with the help of a plunger and thus creating a solid phase joint between the Aluminum sheets. Three-dimensional numerical modelings were performed on Ansys software. A 3-D heat transfer model was used to solve the problem of friction stir spot welding (FSSW). This model was solved by applying the energy conservation equation. This model involves the heat generated at the boundary of the workpiece (AA) and the rotating tool and for study, the problem, steady-state heat transfer equation was used. The numerically computed and the measured values are compared to validate the results.
Post Tensioned CFRP tubes for improved energy absorption
Authors:   Department of Mechanical Engineering, GITAM School of Technology, Hyderabad, India, Gattineni Venkateswarlu , Nathi Venukumar ,   Department of Mechanical Engineering, GITAM School of Technology, Hyderabad, India
Published: November 2021

Thin-walled tubes made of CFRP (Carbon fiber reinforced Polymer) are being increasingly used as CC (Crush Cans) due to their higher specific energy absorption capacity in the automotive domain for absorbing impact energy during a frontal crash. Finite element analysis (FEA) based computational methods have matured over the years with increased accuracy and acceptable correlation with experimental results. FEA-based computational studies when used appropriately can reduce the number of physical tests and prototypes required besides accelerating the overall cycle design time. The present work proposes an FEA based design validation approach for the evaluation of post-tensioned crush can design that can absorb more impact energy compared to a normal CFRP thin tube. The FEM based method uses a combination of multiple simulation techniques to predict the behavior of a post-tensioned tube. The post-tensioning in the present work has been proposed in the form of internal pressure for the thin tube. It was found that a safe value of pressure, when applied as a post-tensioning load, can improve the energy absorption capacity without increasing the weight of the tube.
The efficiency of using incinerated organic waste as an alternative aggregate for concrete
Authors:   Associate Professor, Civil Engineering Department, University of Palestine (UP), Gaza, Palestine, (French), A. Elaqra Hossam. , H. Qarmout Saddam ,   Engineer, Civil Engineering Department, Islamic University of Gaza (IUG), Gaza, Palestine, (Palestinian), T. Hamad Jehad ,   Assistant Professor, Civil Engineering Department, Islamic University of Gaza (IUG), Gaza, Palestine, (Palestinian), A. Hadad Eyad ,   Assistant Professor, Civil Engineering Department, University of Palestine (UP), Gaza, Palestine, (Palestinian)
Published: November 2021

With the growth of the global population, two major problems have emerged. Firstly, a significant amount of domestic and industrial waste is discarded and placed in landfills. Secondly, there is a necessity for more construction and building materials. This research discusses the use of alternative green resources for construction materials taken from recycled organic waste, which represents more than 60% of the total waste generated by humans. Results showed that, after incineration at 750 °C, the reminder represented less than 15% of the original mass of the waste. The waste was separated into five groups: bottom ash (BA) powder, this part represented 5% of the reminder after incineration (for replacing cement); sand; and fine, medium and coarse aggregates. The powder underwent a pozzolanic reaction and the optimum replacement was 10% for the powder, 30% for the sand, and 10% for the fine, medium, and coarse aggregates. A higher compressive strength was applied to the medium aggregate replacement and a lower one for the fine aggregate. In general, BA can be used as an aggregate replacement as the powder undergoes a pozzolanic reaction and can used as a replacement for cement.
An Advanced MPPT Scheme for Standalone Solar powered PV System using Neuro-Fuzzy Estimator based on measured data
Authors:   University of Sousse, ISITCom,4011, Sousse, Tunisia, Naceur Ferdaws Ben ,   University of Sousse, National Engineering School of Sousse, LATIS - Laboratory of Advanced Technology and Intelligent Systems, 4023, Sousse, Tunisia., Saidi Abdelaziz Salah ,   Department of Electrical Engineering, King Khalid University, Abha. P.O.Box: 394, Abha City, P.C.: 61411, Al-Quri-Qer Quarter. Saudi Arabia., Bhutto Javed Khan ,   Department of Electrical Engineering, King Khalid University, Abha. P.O.Box: 394, Abha City, P.C.: 61411, Al-Quri-Qer Quarter. Saudi Arabia., Mahjoub Mohamed Ali ,   University of Sousse, ISITCom,4011, Sousse, Tunisia; University of Sousse, National Engineering School of Sousse, LATIS - Laboratory of Advanced Technology and Intelligent Systems, 4023, Sousse, Tunisia.
Published: November 2021

This paper deals with the problem of the optimization of the power, delivered by the photovoltaic panel (PVP). To achieve this aim, a neuro-fuzzy estimator (NFE), followed by a conversion coefficient and a calculation stage of the optimal duty cycle, has been developed. The NFE is used to calculate the open circuit voltage corresponding to each solar radiation, based only on the standard open circuit voltage. A coefficient, determining for each climatic condition the voltage of the maximum power directly from the open circuit voltage, is estimated by a measured test. Finally, the optimal duty cycles, next, determined by the input/output equation of boost converter. The system performance, under different scenarios, has been checked carrying out MATLAB simulations, using an existing photovoltaic model and real weather data, and comparing the simulation results with the measured one. The results demonstrate the effectiveness of the present approach. The efficiency of the proposal maximum power point tracking (MPPT) is proved and it showed that this controller can generate almost 99% of the real PVP maximum power.