bluuebunny/crossref_metadata_2025_split huggingface dataset:
Teachers’ belief toward science and local wisdom’s integration in mathematics instruction
Authors: Jingga A A , Sujadi I 
Published: March 2020

Abstract
Teacher beliefs affect classroom management. It has caught the attention of many researchers, but few have discussed teacher beliefs in the integration of Science and local wisdom in the teaching of Mathematics. This integration is needed to give students the relevance of learning a subject matter. This study tried to find out the teacher’s beliefs in integrating Science and local wisdom in Mathematics instruction and the inhibiting factors that teachers faced. This research was conducted through a qualitative approach, involving four teachers with different teaching experiences. Data was gathered through in-depth interviews and analysed through Miles and Huberman concept. All participants believed that the integration of science and local wisdom in mathematics instruction had a role in constructing students’ view toward mathematics, but only one participant was able to provide a unique example of the application of science integration and local wisdom in teaching mathematics. The biggest obstacles were experienced by all participants when integrating local wisdom in mathematical instruction due to their lack of knowledge of local wisdom and way to integrate it. Further research is needed to strive to strengthen teachers believe in this integration. Moreover, discussions between subject teachers need to be focused on integration so that the teacher’s insight, especially about local wisdom, can be wide open.
The analysis of students’ critical problem solving on circle-related questions using pesantren-based scientific approach
Authors: Kriswanto A , Susanto  , Irvan M 
Published: March 2020

Abstract
The objective of this study was to analyze students’ critical thinking skills in solving problems concerning circle material using pesantren-based scientific approach. This research employed qualitative descriptive approach, which involved students at class VIII of Plus Junior High School of Darussalam Blokagung Banyuwangi. The instruments used in this study included lesson plan, worksheet, achievement test, critical thinking ability assessment sheets, and questionnaires. From the instrument validation, the average score of each instrument was 3.87; 3.69; and 3.83 for lesson plan, worksheet, and achievement test. The data on students’ learning activities demonstrated the increase in their critical thinking skills. In the first meeting, 77.27% of the students achieved “Good” category. In the second meeting, 89.77% of them gained “Very Good” category, and in the third meeting 92.04% of the students were at “Very Good” category. With respect to the students’ learning outcome, which was set at 75 points, most of them were successful in achieving the minimum passing criteria in that 28 students (87.5%) satisfied the criteria, while 4 students (12.5%) failed. In addition, the analysis on observation data germane to students’ critical thinking skills also demonstrated an increase. In the first meeting, 65% of the students were at “Good” category. 72.5% of the students achieved “Good” category in the second meeting, and in the third meeting 85% of the students were at “Very Good” category. The results of the data analysis showed that students’ critical thinking skills in the solving circle-related questions using pesantren-based scientific approach indicated the achievement at “Very Good” criteria.
Deduction level of undergraduate students’ imagination in solving geometrical problem
Authors: Mahfut M , Sunardi  , Yudianto E , Purnomo R C , Firmansyah F F 
Published: March 2020

Abstract
This research aims to know the imagination process on Mathematics’ undergraduate students who had deduction level in solving Geometrics’ problem. This research is qualitative which the subjects in the research were 2 students that one female and one male. To know the imagination process, subjects were asked to solve two Geometrics’ problems. Analysis was done to determine the indicators of imagination that appeared for each subjects. To improve the data accuration, the researcher used triangulated data method for the data collection method, such as observation, students’ worksheet, and interview. The result showed that there were differencies that appeared for each subjects.
The students’ perception of the teacher’s apperception and its influence on students’ initial knowledge
Authors: Musthofa P R , Sujadi I 
Published: March 2020

Abstract
The first minutes of the learning process is a very influential time for the next hour of the lesson. Motivating, arousing interest, and attracting attention of the students are the important things that must always be built upon existing knowledge. Apperception plays a very important role in the learning process. The aim of this research is to determine the influence of students’ perceptions of the teacher’s apperception on the students’ initial knowledge. This research is a mix method sequential exploratory design conducted in the 10th grade of Science 2 class in MAN 1 Karanganyar at the time of learning the absolute value linear equations and inequalities. The data collection techniques used are quiz, questionnaire, and interview. The data analysis used is descriptive analysis supported by regression analysis results. The results showed that there was a significant influence of students’ perception of the apperception that the teacher had on the students’ initial knowledge.
The profile of student’s creative thinking skills in mathematics problem solving in terms of adversity quotient
Authors: Nahrowi  , Susanto  , Hobri  
Published: March 2020

Abstract
The objective of this study is to describe students’ creative thinking skills in terms of Adversity Quotient. Students of tenth grade math and science studies were given an AQ questionnaire to find out their personality types. Three students from each personality type of quitters, campers, and climbers were given tests to find out their creative thinking skills. The procedure of this study refers to the qualitative content analysis method: (1) giving questionnaires and tests, (2) presenting in detail about students’ mathematical performance, and (3) in-depth interviews. It was known from 97 subjects who were given questionnaire, 6 students are quitters’, 2 peoples switched from quitters to campers, 48 campers, 36 campers to climbers and 5 climbers. Three quitters and campers didn’t fulfill with creative skill qualifications. Whereas for the climbers’ showed fluency and flexibility.
Students’ combinatorial generalization thinking skills in solving tessellation coloring pattern problems and its enhancement through problem-based learning
Authors: Anwarudin M , Dafik  , Farisi M I 
Published: March 2020

Abstract
Combinatorial generalization thinking skills are important to support understanding of mathematical concepts, particularly in solving tessellation coloring pattern problems. This study aimed to analyze the students’ combinatorial generalization thinking skills and improve them by using problem-based learning (PBL), then present them with phase portraits. This study applied explanatory sequential method that combined quantitative and qualitative sequentially. The subjects were 23 elementary school students in the experimental class and 23 elementary school students in the control class. The research findings show that the levels of students’ combinatorial generalization thinking skills divided into weak, moderate, and strong. The result of independent sample t-test indicated that there was significant impact of PBL implementation with the significance of 0.03 (p<0.05). N-Gain shows that PBL is more effective than the conventional one. The enhancement on strong and moderate categories showed an increase of 43.47% and 8.69%, while the weak one showed a decrease of 52.18%. The descriptions of combinatorial generalization thinking skills are presented with phase portraits. The results reveal that the implementation of PBL increases the students’ combinatorial generalization thinking skills in solving tessellation coloring pattern problems of elementary school students.
Inquiry-based physics textbooks with multi representation to practice hypothetico deductive reasoning for senior high school students
Authors: Mahardika I K , Wardani P O , Yushardi  , Prasetyaningsih A 
Published: March 2020

Abstract
Physics learning consists of theories, concepts, and laws that study phenomena in the universe that must emphasize students to use higher-order thinking skills. Scientific reasoning is a thought process that is used to solve problems based on scientific evidence. When students can reason well, these students can understand the concepts of the material that has been learned. Hypothetico deductive reasoning is one of scientific reasoning that can foster higher order thinking skills. One that can support the success of the learning process is a textbook accompanied by an inquiry. This inquiry-based textbook accompanied by multirepresentations contains a description of physics subjects to find information and knowledge where students are encouraged to be directly involved in inquiry to practice hypotethico deductive reasoning skills. This book is equipped with multi representations to facilitate students in processing concepts and solving problems. Inquiry-based student textbooks accompanied by multiple representations can improve students to gain experience, investigate problems and draw conclusions according to scientific methods.
Characteristics of textbooks based on the sets(science, environment, technology, and society) of the respiratory system to improve the ability of junior high school students to multi-representations
Authors: Mahardika I K , Rudiansyah M I M Y , Yushardi  , Rasagama I G , Doyan A 
Published: March 2020

Abstract
This research is the development of a SETS-Based Respiratory Textbook, using a mixed method of the investigation model, which collects qualitative data, then constructs a SETS-Based Respiratory Book design that is ready to be validated. The subject in this study was a SETS-Based Respiratory Textbook that could improve the representation ability of eighth grade students of junior high school. Whereas the respondents were Science Subjects (IPA) teachers who were incorporated in the Consultative Assembly for Science Subjects (MGMP) in Central District of Jember Regency and students of class VIII of SMP. Data collection techniques using observation, questionnaires, tests, and documentation. Research data explained qualitatively. The purpose of this study is to find out whether SETS-based books can be validated from the appropriateness of their contents. The results showed that the SETS-Based Respiratory Textbook contained the phenomenon of the Respiratory System; and has a specific writing pattern, which has a sequence of chapter titles, sub-chapter titles, description of material, sample questions, and ability test questions, and bibliography.
Design of PISA-liked problem which used jember fashion carnival context to train students’ analytical thinking
Authors: Septiadi D D , Kholil M , Masrurotullaily  , Apriyono F , Aini A N 
Published: March 2020

Abstract
This study aims to develop PISA-liked problem which used Jember Fashion Carnival as it is context to support students’ analytical thinking. The PISA-liked problem then tested to 15 junior high school students at grade 8. This research is designed based on Ploomp model that satisfied validity, practicality, and effectiveness. Our analysis shows that PISAliked problem with JFC context was valid because the expert said that those items were valid with the score of 0.77. It’s also supported by the analysis of validity test which shows 0.63. Secondly, the problem was practical, because the students’ response was positive with 0.85 students answered so. Thirdly, the design also called effective, because it was reliable about 0.57. Meanwhile, around 0.73 among the students can use their analytical thinking and give reasons when they have to find the correct answer. Their strategies were connecting the problem to their prior knowledge and predict the solution.
Estimation of water volume in ungauged, dynamic floodplain lakes
Authors: Tan Z , Melack J , Li Y , Liu X , Chen B , Zhang Q 
Published: March 2020

Abstract
Lakes play a crucial role in retaining water and altering biogeochemical processes on floodplains. Existing strategies and algorithms for estimation of water storage are insufficient for dynamic floodplain lakes due to the scarcity of available observations. Combining a time series of open water area with a fine spatial-temporal resolution by integrating Landsat and MODIS observations of Poyang Lake (China) with digital elevation models, and limited gauge data, generated water storage estimates as a function of surface hydrological connectivity. Despite possessing a relatively small portion of Poyang Lake’s water volume, the floodplain lakes occupy a large part of the surface water area, especially in the low water period. Floodplain lakes, in particular, those distributed in the upper delta contribute to relieving drought conditions in Poyang Lake.
Widespread mangrove damage resulting from the 2017 Atlantic mega hurricane season
Authors: Taillie Paul J , Roman-Cuesta Rosa , Lagomasino David , Cifuentes-Jara Miguel , Fatoyinbo Temilola , Ott Lesley E , Poulter Benjamin 
Published: March 2020

Abstract
Comprised of 17 named tropical storms, 6 of which were major hurricanes, the 2017 Atlantic hurricane season ranked as one of the most damaging and costly hurricane seasons on record. In addition to socio-economic impacts, many previous studies have shown that important coastal ecosystems like mangroves are shaped by severe storms. However, little is known about how the cumulative effects of storms over entire hurricane seasons affect mangroves across large regions. We used satellite imagery from the entire Caribbean and Gulf of Mexico region to show that 2017 resulted in disproportionate mangrove damage compared to baseline responses over the previous 8 years. Specifically, we observed 30 times more mangrove damage, via a reduction in the normalized difference vegetation index (NDVI), during 2017 compared to any of the eight previous hurricane seasons, and most (72%) of this damage persisted throughout the 7 month post-hurricane season period as indicated by no NDVI recovery. Furthermore, wind speed, rainfall, and canopy height data showed that mangrove damage primarily resulted from high maximum wind speeds, but flooding (cumulative rainfall), previous storm history, and mangrove structure (canopy height) were also important predictors of damage. While mangroves are known to be resilient to hurricane impacts, our results suggest that increasingly frequent mega-hurricane seasons in the Caribbean region will dramatically alter mangrove disturbance dynamics.
Experimental verification of fine particle emission reduction based on acoustic agglomeration for steel sintering flue gas
Authors: Zhao Yun , Liu Chang , Zhou Hefeng , Tian Zhangfu , Zeng Xinwu , Gong Changchao 
Published: March 2020

Abstract
The sintering flue gas in steel production has the characteristics of large discharge capacity, fine size, high temperature, corrosion and fluctuation of working conditions, and is the primary control object of PM2.5 emission source. Traditional dust removal technologies and equipment are difficult to achieve efficient collection of fine particles. In order to quantitatively study the effect and regularity of high intensity sound waves on fine particles, the online acoustic agglomeration test system was built by using high-power pneumatic source and wave tube with abrupt section. The high intensity standing wave field of 140 to 150 dB was generated in the wide frequency range between 50 Hz and 2 kHz by the acoustic resonance synthesis, and interference from compressed airflow was avoided by the acoustic-flow separation module. Variation of the sintered flue gas PSD was obtained under different sound intensities and frequencies. Data analysis shows that the high concentration condition can greatly reduce the operation time and energy consumption. Under the action of high intensity acoustic waves with a fundamental sound pressure level of 87.3-161.8dB and duration of 3s, the measured PM2.5 removal efficiency is 16%-92%, and the optimal frequency is near 800Hz. This paper verifies the feasibility of acoustic agglomeration (AA) in the treatment of sintering flue gas, and provides a theoretical reference and technical basis for the development of PM2.5 real-time emission control device for steel production.
Study on High Temperature Chlorination Corrosion of Metallic Materials on The Waste incineration boilers
Authors: Zhai Wei , Yang Bo , Zhang Shuanghong , Ni Jinfei , Li Shiping , Li Yue 
Published: March 2020

Abstract
There's a growing concern about the phenomenon of high temperature chlorination corrosion on the waste incineration boilers by researchers. This paper discusses the corrosion features of chlorination corrosion for metallic materials at high temperature, explore the mechanism of high temperature chlorination corrosion, analyze the main factors of effect chlorination corrosion, and preventive measures for the resistance to high temperature chlorination corrosion were proposed.
The Effect of Meteorological Factors, Seasonal Factors and Air Pollutions on the Formation of Particulate Matter
Authors: Chen Cai , Li Wei , Dong Leilei , Li Xiyuan 
Published: March 2020

Abstract
To investigate the effect of meteorological factors, seasonal factors and Air Pollutions on the formation of particulate matter (PM2.5) in Jinan, China. Nonlinear dynamic inversion model was established to analyze the effect of meteorological factors, seasonal factors and CO, PM10, SO2, NO2, O3 on PM2.5 formations in different seasons. Temperature has a great influence on PM2.5 concentration variation. Precipitation exacerbate the formation of PM2.5 in Winter. Wind speed make a little contribution to PM2.5 formation in Jinan during different season. The formation of PM2.5 was influenced by confounding factors.
Combined MgO nanoparticle and microwave pre-treatment on biogas increase from Enteromorpha during anaerobic digestion
Authors: Shi Yue , Huang Kaiguo , Feng Ruizhe , Wang Renjie , Liu Guobing , Zaidi Asad A. , Zhang Kun 
Published: March 2020

Abstract
This study evaluated the anaerobic digestion of MgO metal-oxide nanoparticles combined with microwave pretreatment to increase biogas production from microalgae. The result shows the maximum total biogas yield of 342ml and 320ml were achieved by the MW pretreatment of 800W, 4min +15mg/L MgO NPs group and 600W, 6min +5mg/L MgO NPs group, which are 1.38 and 1.30 times compared to control, respectively. The influence of metallic oxide (MgO) NPs and MW pretreatment on anaerobic digestion of Enteromorpha resulted in significant increase in cumulative biogas production. The modified Gompertz equation and Logistic function model were used to simulate the nanoparticle-enhanced anaerobic digestion process, which demonstrate that the modified Gompertz equation can better simulate the fermentation process of microalgae.
The investigation and simulation of the UVOM ballast water treatment device
Authors: Shi Yue , Wang Yinhao , Jing Shuo , Lu Zheng , Wang Xixi , Zhang Shun , Wang Gaoshuai , Li Jianing , Zhang Kun 
Published: March 2020

Abstract
The marine environments are threatened by discharged wastewater from ships, especially ballast water. In this study, a novel ballast water treatment device (UVOM) was designed and operated for ballast water treatment. The main process of UVOM consists of membrane filter, venture tubes, the UV catalytic TiO2 unit and an ozone generator. Salinity, flow rate and UV intensity was investigated for their efforts on process efficiency. Results indicated that salinity cause less effects on the removal efficiency of UVOM, and flow rate and UV intensity played more important roles. For UV intensity of 50 W and the flow rate no more than 200 L/h, and UV intensity of 75 W and the flow rate no more than 400 L/h, the discharged ballast water can meet the D-2 standard. Back propagation neural network (BPNN) was constructed for simulating the process performance, and it can better describe the process with less deviation between predictive values and real values. The deviation of the total bacteria was from 4.14% to 6.16%, and the deviation of E. coli was from 3.6% to 7.2%. In addition, the results showed that the relative importance of flow rate (65.96%) was significantly larger than UV intensity (34.04%).
Catalytic Oxidation of Toluene from Textile Printing and Dyeing Heat Setting Machine
Authors: Zhong Shaotao , Chen Dingsheng , Zhong Peiyi , Li Yiting , Chen Zhihang , Cen Chaoping 
Published: March 2020

Abstract
A series of different catalysts were prepared by impregnation method using P25 (nano-titanium dioxide), Mt (montmorillonite) and ZSM-5 as supports, and Mn, Cu, Ce, Co and Fe as active components. The effects of catalytic oxidation were investigated to investigate the factors affecting the catalytic oxidation of toluene. The catalysts were characterized by BET, XRD and SEM. The surface morphology and pore size and pore volume were observed. It was found that MnCu0.5Ce2On/P25 had the best removal effect on toluene under the condition of 3% O2 and temperature of 240 °C. Combined with the characterization results, the pore size and pore volume are relatively large, which is beneficial to increase the selective adsorption of toluene and increase the dispersion of active components, so that the metal oxide of the active component is uniformly dispersed on the surface of the catalyst, and the catalyst is increased. The surface active site enhances the performance of catalytic oxidation of toluene.
Preparation and application of VOCs adsorption materials in textile industry
Authors: Chen Dingsheng , Xu Zhiyuan , Zhong Shaotao , Chen Zhihang , Cen Chaoping 
Published: March 2020

Abstract
A series of HMS molecular sieves with different pore structures were prepared by using dodecylamine and octadecylamine as template and tetrabutyl orthosilicate as silicon source to study the different pH values and temperatures. Adsorption performance. The physicochemical properties of HMS molecular sieves were characterized by BET, XRD and SEM. The results showed that the HMS molecular sieve material synthesized by dodecylamine as template was obtained after standing for 12 h in water bath for 12 h, pH 2 and calcination temperature was 550 °C. The best adsorption effectis HMS molecular sieve material synthesized by octadecylamine as template agent has the best adsorption effect when the aging time is water bath for 24 h, pH is 10, and calcination temperature is 550 °C. The adsorption rates are up to 71.72% and 74.78%, respectively.
Optimization of Protein Extraction from the Low Organic Residual Municipal Sludge Waste
Authors: Liang Xiaohui , Zhao Yuxiao , Si Hongyu , Hua Dongliang , Dong Tongxi , Liao Wei , Zhang Bin , Liu Suxiang 
Published: March 2020

Abstract
In this study, municipal sludge waste was used for protein extraction. Two pretreatment ways such as acid and alkaline hydrolysis were compared and the alkaline hydrolysis method was selected as the better way for protein extraction from the residual sludge. In order to obtain the optimal condition for protein extraction, the factors such as NaOH concentration, NaOH solution volume and pretreatment period were selected and optimized by response surface methodology, and the optimal condition for protein extraction was obtained: NaOH concentration was 3.85 mol/l , 24.0 g wet municipal sludge waste was added in 1 L of water, and the pretreatment period was of 12.16 h at 50 °C. Under the optimal extraction condition, the protein extraction yield could reach 5923±107 μg/g sludge, which were 2.07 folds than the initial production pretreated by NaOH.