bluuebunny/crossref_metadata_2025_split huggingface dataset:
Design and simulation of a rooftop PV System in Taylor’s University Lakeside Campus
Authors: Krishna Y , Fauzan M F , Muhammad Nurhisham Gan N B 
Published: December 2021

Abstract
Solar photovoltaic (PV) system is proven to be a future-proof type of power generation for growing economies. There are almost zero pollutants released, low maintenance cost with high reliability as the lifespan of a solar PV stretches up to 30 years, a well-sought alternative form of sustainable energy. Moreover, the electricity consumption in Taylor’s University (TU), Malaysia is very high, as a consequence, a huge fraction of the fund is used to settle an RM450,000 electricity bill on average annually. In this paper, the study focused on how to reduce electricity consumption in TU by proposing a design of a comprehensive solar PV system. PVSYST and Sketchup software are used to design and analyze the PV system. In the present study, a Grid-Connected Photovoltaic (GCPV) mounted on the available roof space of TU is investigated. Also, a detailed economic analysis that includes the payback period and annual savings achieved through the proposed PV installation is analyzed. Annual savings of RM 267,621.00 can be made upon utilizing the proposed idea. Besides that, TU would be able to recover the initial investment cost in approximately 8 years of payback period, proving that the implementation of a 433kWp of solar PV unit is a smart option to address the sustainable energy goals.
Fabrication technique of composite chitosan/alginate membrane module for greywater treatment
Authors: Nalatambi S , Oh K S , Yoon L W 
Published: December 2021

Abstract
A novel chitosan/alginate composite membrane is proposed for the application of greywater treatment. In particular, the effect of stirring speed of mixing chitosan and alginate solution was investigated in this study. The study revealed that 150CSAL and 210CSAL membranes swell significantly compared to CS membrane due to the porous structure of composite membrane. The FTIR spectra revealed that the mixing speed has no influence in terms of molecular interaction between CS and AL due to fixed CS and AL concentrations used in this study. On the other hand, the complexation of AL with CS made outstanding improvement to the dense structure of CS where 180CSAL membrane has UP water flux as high as 90 L/m2h at 2 bar. All membranes have the capability to remove the pollutants present in GW and the COD removal was further improved up to 7% using CSAL membranes. In addition, increasing mixing speed improved the pathogen removal efficiency compared to CS membrane. The treated GW met the non-potable GW reuse standard for turbidity<5 NTU and TSS<20 mg/L. To summarize, the proposed fabrication technique on CSAL membrane showed improved characteristics to CS membrane and has significant performance on GW treatment.
Design and Simulation of Fiber Optic Cable using SolidWorks for Landslide Monitoring
Authors: Johnson M A M , Kit M H , Hoon Y , Koay S C Y , Mahdiraji G A 
Published: December 2021

Abstract
This paper presents fiber optic cable design and simulation using SolidWorks software. SolidWorks software is an effective tool that helps design, analyze, and give a better understanding of fiber optic cable capabilities and performances. The model of the fiber optic cable was developed based on the existing fiber optic drop cable. It is composed of mainly four parts: Fiber optic member, fiber-reinforced plastic (FRP) strength member, low smoke zero halogen (LSZH) jacket, and steel wire. A static study was performed to determine the designed model’s ability to endure various levels of pressing and pulling forces. Simulation results showed that the cable can withstand a maximum of 195 N pulling force and 30000 N pressing force with a displacement of 1.78e+02 mm and 4.94e-01 mm respectively. The findings will contribute to the design of a new or novel fiber optic cable that is capable to monitor landslide activities with higher durability in future studies.
The calculation of uranium metallic Fuel (U-10%wtZr) cell with helium coolant using SRAC 2K6
Authors: Putri Suci Claudia , Ariani Menik , Royani Idha , Arsali  , Monado Fiber 
Published: December 2021

Abstract
In this study, pin-shaped natural metallic uranium fuel cells with a diameter of 1.4 cm were designed with and without enrichment of 2-10% by using helium as a coolant. The calculations were conducted by using SRAC software and the results show that the greater the enrichment level, the more significant the value of the infinite-multiplication-factor (kinf), meanwhile the conversion ratio is smaller. Basically, uranium exists in two isotopic forms namely, U-235 and U-238 which are transformed into other element such as Pu-239 when they both go through fission and transmutation reactions in the reactor core. Therefore, to obtain the optimum reactor core design, the performance information of nuclear fuel cells from the variations of burn-up time needs to be taken into consideration.
Cultivating science process skills among physics students using PhET simulation in teaching
Authors: Ruwiyah S , Rahman N F A , Rahim A R A. , Yusof M Y , Umar S H 
Published: December 2021

Abstract
This paper concerns with the use of simulation as a pedagogical tool for a physics teaching strategy. This action research was conducted to investigate the scientific skills as a result of modelling learnt using PhET simulation. The cycle of action research involved in this study is planning, acting, observing and reflection. Through combining physics simulation with Science Process Skills (SPS) and Manipulative Skills (MS) to deliver real experimenting experience, the discussion is further to make connection with students’ achievement in Physics. One physics class involved in this study consist of 36 matriculation college students. Prior the study, students were briefed on the procedures for conducting the Harmonic Motion experiment using the PhET Simulations. Following this, students must completed the practical report for analysis, data interpretation and discussion. At the end of the teaching, a set of formative test was used to evaluate students’ mastery of Physics concepts after conducting the Simple Harmonic Motion simulation experiment. The results showed an increase in the percentage of frequency of study participants practicing Science Process Skills and Manipulative Skills (Conducting Experiments). In the Formative Test, the study participants showed a high average score of 13.9 marks, which is 93%. This study is able to develop the advantage of multimedia for physics laboratory works and explore its potential to strengthen scientific skills.
Development of simple science kits as dynamic electricity learning media for junior high school
Authors: Saehana S , Werdhiana I K , Tuljannah N , Izzah A 
Published: December 2021

Abstract
The aim of this study is to produce Simple IPA KIT as science learning media for dynamic electricity material. This Simple IPA KIT contains several puzzle blocks that could be set into several electrical circuits. The type of the study was Research and Development, which refers to the model of Puslitjaknov (a team in the Center for Policy and Inovation Studies). The five-scales Likert questionnaire were used to obtain the data. The product was assessed by the media and material experts, physics teachers and high school students. The result of media experts showed a percentage value of 85%, in “Very Good” category, while it was 80% in “Good” category for material expert assessment. Meanwhile, the responses of teachers and students showed 95.6% and 84%, respectively, with “Very Good” category. It indicates that the Simple KIT media is suitable for learning media.
The influence of the online PhET simulation-assisted using direct instruction on student’s conceptual understanding of parabolic motion
Authors: Lestari P D , Mansyur J 
Published: December 2021

AbstractThis study aimed to investigate the effect of the online PhET simulation-assisted using the direct instruction on students’ conceptual understanding of the parabolic motion. It was quasi-experimental research with pretest-posttest control group design. The research subjects were 10thgrade students, consisting of 20 students for each experimental and control groups. The data were collected using a concept understanding test. The research data were analyzed quantitatively by using descriptive and inferential statistics. The results show that the average score of the experimental class was higher than the control class. The hypothesis was tested using Mann-Whitney (U-Test) with a significance level of = 0.05. Based on data analysis, it can be concluded that there was a significant effect of online PhET simulation assisted learning model on students’ concept understanding on parabolic motion.
The influence of science, technology, engineering, and mathematics (STEM) learning approaches on learning outcomes
Authors: Andriani P , Ali Muhammad , Jarnawi M 
Published: December 2021

Abstract
The objective of the study is to discover the effect of the Science, Technology, Engineering, and Mathematics (STEM) learning approach on the physics learning outcomes The study is considered as quasi-experimental research by implementing the non-equivalent, pretest-posttest as the research design. There were two science classes of SMA Negeri 1 Sindue Tobata were selected as the sample of the study. The Science, Technology, Engineering, and Mathematics learning approach was applied to the experimental class while the scientific approach was applied to the control class. The learning outcomes test obtained showed that the average score of the experimental group was 15.95 and the average score of the control group was 12.25. Based on the results of hypothesis testing, obtained that tcount=3.00 and t_(0.0975(38))=2.024 at a significance level of a=0.05. It means that the value of t_count is outside the acceptance area of H_0. The findings concluded that there were differences in physics learning outcomes between the students who were taught by using STEM approach and the students who were only taught by implementing the scientific approach in SMA Negeri 1 Sindue Tobata.
Developing android-based teaching material on temperature and heat using ADDIE model
Authors: Sriwahyuni T , Kamaluddin  , Saehana S 
Published: December 2021

Abstract
Physics teaching materials are essential in supporting students to solve the problem and understand abstract physics concepts, if they are attractively designed. In this study, the researchers aim to create android-based teaching material on temperature and heat to increase students’ interest and motivation. This study is the development research using the ADDIE model, which involves 5 stages. They are Analysis, Design, Development, Implementation and Evaluation. The research subjects were 20 students of class XI. The test and questionnaire analysis results indicated that the average score of the two validators was 3.66 and was categorized as “Very good.” Assessment by the teacher depicted an average score of 3.45 categorized as “Very Good,” and the results of the analysis of student response assessment obtained an average score of 3.25 which means “Strongly Agree”. The results showed that the android-based teaching material developed is feasible as teaching material for students.
Development of a microcontroller-based instrument for measuring liquid density
Authors: Handayani F , Wahyono U , Saehana S 
Published: December 2021

Abstract
The purpose of this research was to develop a practical tool to measure the density of liquids. This research was a research and development research that referred to the development model of Borg and Gall. The research instrument used was a questionnaire with a 4-Likert scale. Evaluation phase included the assessment of media validator, students’ responses, and laboratory test. The product quality data obtained were analyzed using descriptive analysis. The quality of the product based on the analysis of the media expert’s assessment obtained a value of 3.30 which was in very good category. Meanwhile, the results of student responses in the limited-testing obtained a value of 3.30 which showed that they strongly agree with the product’s usability. The test results and questionnaire analysis indicated that the microcontroller-based density determination practicum tool developed was feasible to use. From the experimental results, the density value of water was 0.95 gr/cm3 with a standard deviation of ±0.044 and a relative uncertainty value of 0.22%. The density value for salt water was 1.04 gr/cm3 with a standard deviation of ±0.011, compared with the literature which is 1.10 gr/cm3. Moreover, the density of coconut oil measured was 0.76 gr/cm3 with a standard deviation of ±0.045, while the literature is 0.84.
The use of water spinach plants (Ipomoea aquatica Forsk.) for phytoremediation of hospital waste
Authors: Suherman  , Rahmawati S , Said I , Nurbaya  , Armiyanti S , Thamrin N 
Published: December 2021

Abstract
Water spinach (Ipomoea aquatica Forsk.) has the ability to accumulate pollutants so that it can be useful for wastewater treatment processes. The purpose of this study was to determine the phytoremediation technique in hospital wastewater using kale in improving the quality of hospital wastewater and to determine the level of accumulation of Pb and Cr metals in plants. The study used a completely randomized design with four treatments, namely treatment 0 days (without treatment), 2 days, 4 days and 6 days. Parameters include the physical and chemical quality of the waste as well as the content of Pb and Cr in the waste and plants. To determine the effect of phytoremediation on the quality of household waste and metal content, ANOVA analysis and further testing with the BNT test level of 5% were used. Phytoremediation with kale was able to reduce the temperature of the waste on the 4th day of treatment and dissolved oxygen on the 4th treatment and increase the pH. The accumulation of Pb and Cr on each day is different. The highest accumulation of Pb and Cr occurred on day 6, namely 0.1587 mg/L for Pb metal and 0.2167 mg/L for Cr metal. Kale plants are very possible to be used in the phytoremediation process.
Study on the Battery Safety in Frontal Collision of Electric Vehicle
Authors: Qiao Weigao , Yu Lei , Zhang Zhanxi , Pan Tongyu 
Published: December 2021

Abstract
With the rapid development of electric vehicle industry, more and more attention has been paid to the safety of the automotive battery. The safety of battery in electric vehicle’s frontal collision is the focus of this paper. In the process of simulated collision, the research object is simplified into a battery box. The mechanical properties of the battery monomers were investigated to summarize the mechanical properties of the internal failure of the monomers. Constructing the finite element model of the research object, we focus on the analysis of collision simulation results and propose the improvement measures. According to the test requirements in C-NCAP, the crash simulation of battery box is carried out by using the finite element software called LS-DYNA, which is used in automobile collision to analyze the deformation, stress of the battery box and the most dangerous battery monomer during the frontal collision. The simulation results show that the deformation of the case is obvious, and the protection of the battery is lost in the 50km/h frontal collision condition. By adding EVA foam, the maximum deformation of the battery monomer is reduced by 8.2%. By improving the material of battery case, the maximum deformation is reduced by 12.65%.
Sliding wire detection system of electric lock screw tool based on motor characteristics
Authors: Zhang Ning , Yan Yinxin , Yang Houcheng , Yu Zhangsi 
Published: December 2021

Abstract
This paper presents a sliding wire detection system of electric screw locking tool based on the characteristics of motor. The system can judge whether the screw has sliding wire through the current change of motor during normal operation, and realize the real-time detection and alarm of sliding wire. The system has the advantages of high sensitivity, low cost and high accuracy. It can be widely used in automatic assembly and other fields.
Research on Equalization Control Strategy of Marine Lithium Battery Pack
Authors: Sun Qi , Quo Yi 
Published: December 2021

Abstract
With the widespread use of clean energy in ship electric power systems, marine lithium battery systems are becoming more and more popular. Aiming at the problems between the individual cells in the lithium battery pack, such as inconsistency in voltage, capacity, and internal resistance, the state of charge (SOC) of battery is selected as the equalization control variable, an equalization topology structure based on SOC for battery connecting or bypassing is designed. The equilibrium control strategy fusing model predictive control (MPC) algorithm and time-sequence control algorithm is adopted. The simulation model is built on the MATLAB/Simulink platform, and the different value combinations of two equalization parameters (i.e., equalization period T and number of batteries connected to the battery pack q) were simulated and analyzed. The results show that the designed equalization control strategy can quickly and accurately achieve SOC equalization, by optimizing two key parameters, the equalization accuracy and equalization speed of the marine lithium battery pack can be improved, also the energy loss in the equalization process can be reduced.
An Attention-based Text Detection and Recognition Method for Terminals of Current Transformer’s Secondary Circuit
Authors: Lu Da , Liu Jia , Li Helong 
Published: December 2021

Abstract
Recognizing irregular text in real industrial scenes is a challenging task due to the background clutter, low resolutions or distortions. In this work, an attention-based text detection and recognition method for terminals of current transformer’s secondary circuit is proposed. It consists of three major components: pre-processing, text detection and text recognition. In text recognition module, a novel spatial temporal embedding is designed to better utilize the positional information. During training, the proposed framework only requires sequence-level annotations, instead of extra fine-grained character-level boxes or segmentation masks as in previous work. Despite its simplicity, the proposed method achieves good performance on the dataset collected in actual working scene.
Research on UDE control based on load torque compensation of PMSM
Authors: Yan Hongliang , Zhai Weizhi , Geng Yan 
Published: December 2021

AbstractIn order to solve the problem that the traditional uncertainty and disturbance estimator (UDE) control needs to increase the filter order to keep good performance when facing rapid disturbance changes, thus lead to cost increase in implementing the system, a speed control strategy of permanent magnet synchronous motor (PMSM) driver based on reduced order observer compensation is proposed. The designed control strategy is robust to the system with internal parameter variation and external torque disturbance. Through the compensation of load torque, the pressure of UDE controller is relieved, and then the tracking error of high-frequency component in load torque is eliminated, and the control performance of the system is improved more effectively. This paper proves the superiority of the new compound controller through comparison of simulation. results
Analysis of Coaxiality-Transmission Efficiency Vector Model of RV Reducer Based on ADAMS
Authors: Liu Yongming , FU Lei , Ma Qiang , Zhao Zhuanzhe , Zhang Zhen , Wei Neng 
Published: December 2021

Abstract
Aiming at the influence of the coaxiality error of the transmission system on the detection accuracy of the RV reducer performance test device, taking RV-20E reducer is used as the research object, combined with the ADAMS dynamic simulation software, the RV reducer dynamic transmission coaxiality and transmission efficiency vector model is established, and the coaxiality of the transmission system of this model is simulated under different error ranges and no load. The transmission efficiency is 32.94% when coaxiality is within the allowable error range. The results verify the accuracy of the model. At the same time, when the concentricity exceeds the allowable range of error, it will have a great impact on the transmission efficiency. The design of the coaxiality adjustment mechanism of the RV reducer performance detection device has certain theoretical significance and practical value.
Error Analysis of Integrated Six-Light-Screen Array Measurement Model
Authors: Chen Rui , Ji Bowen , Duan Chenxi 
Published: December 2021

Abstract
The light-screen array measurement method is very suitable for measuring the coordinates of rapid-fire weapons, and the measurement error is determined by the measurement model. In this paper, the separated light-screen array is improved to an integrated light-screen array, which reduces the parameters and optimizes the measurement model. Three kinds of factors affecting the coordinate measurement error of the projectile under the integrated measurement model are analysed, and the influence of the factors on the distribution of coordinate measurement errors is simulated and analysed in the selected 1m×1m target area. Then the error distribution of the separated measurement model and the integrated measurement model is simulated and analysed under the same conditions based on the design values and current technology level. The result shows that compared with the separated measurement model under the same simulation conditions, the comprehensive coordinate measurement error is optimized by about 2.1mm within 1m×1m target area. The research can provide reference for the design and optimization of light-screen array and other similar photoelectric measurement systems, and provide new ideas for improving the coordinate measurement precision of therapid-fire weapons.
An Integrity Measurement Scheme for Containerized Virtual Network Function
Authors: Qian Dazan , Guo Songhui , Sun Lei , Hao Qianfang , Song Yunfan , Wang Miao 
Published: December 2021

Abstract
The deployment of virtual network function (VNF) in the container can realize the 5G service-based architecture (SBA) with high flexibility. The container carrying the VNF has poor isolation and low protection capabilities, and there is a security risk of being tampered and replaced. Current security protection technologies such as access control, intrusion detection, and virus detection cannot ensure that the container is not illegally modified. In order to fundamentally protect the integrity of containerized VNFs, this paper proposes a containerized VNF trust measurement scheme container integrity measurement (CIM). The scheme extends the chain of trust to bare metal containers and virtual machine containers, and experiments are carried out in a containerized VNF communication environment. The results show that the integrity measurement protection scheme is effective. Compared with ordinary containers, the average CPU usage of trusted containers has increased by 26%, and the average memory usage growth rate is less than 1%, the performance overhead caused by CIM is acceptable.