Proceedings of the 7th International Conference on Research, Implementation, and Education of Mathematics and Sciences (ICRIEMS 2020)最新文献

{"title":"Optical Characteristics of Tin Oxide Thin Films Doped with Indium and Aluminum Using the Sol-Gel Spin Coating Technique","authors":"A. Doyan, Susilawati, H. Munandar","doi":"10.2991/ASSEHR.K.210305.057","DOIUrl":"https://doi.org/10.2991/ASSEHR.K.210305.057","url":null,"abstract":"The aims of this research are to understand the optical characteristics of SnO2 doped with Indium and Aluminum (SnO2:In+Al) using the sol-gel spin coating technique. Optical characteristics of SnO2:In+Al thin films were measured by UV-Vis Spectrophotometer. The optical characterization results showed that the SnO2:In+Al thin films had an increase in transmittance from (68.6 – 78.3)% at a wavelength of 300 – 470 nm and an increase in absorbance at a wavelength of 295 nm from 4.34 – 5.00 with the increase in the percentage of doping. This shows the thin layer absorbs the maximum waves at a wavelength of 295 nm. The increase in the doping percentage causes the energy gap of SnO2 thin films is decreasing. The direct energy gap decrease from 3.58 to 3.54 eV and the indirect energy gap decrease from 3.90 to 3.87 eV. The energy of optical activation of the SnO2 thin films decreases from 0.97 to 0.86 eV when increasing the doping percentage. This research has indicated that SnO2:In+Al thin films has a low energy gap and high transmittance so that it belongs to be high-quality thin films.","PeriodicalId":378773,"journal":{"name":"Proceedings of the 7th International Conference on Research, Implementation, and Education of Mathematics and Sciences (ICRIEMS 2020)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124254439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Molecular Characterization of Orchid Variants Spathoglottis plicata Blume Based on RAPD Analysis","authors":"S. Aloysius, I. Mercuriani, Ratnawati, Sudarsono","doi":"10.2991/ASSEHR.K.210305.009","DOIUrl":"https://doi.org/10.2991/ASSEHR.K.210305.009","url":null,"abstract":"The development of S. plicata orchid variants is important to increase their genetic diversity. This study aims to determine the genetic diversity of S. plicata orchid variants based on RAPD analysis. The research sample was 15 plant variants consisting of wild type and mutant orchid variants. Molecular characterization was used to identify the genetic diversity of orchid variants based on the PCR-RAPD using eight universal primers from the screening results. The DNA amplicon electropherogram from RAPD results was converted to binary data and analyzed with GenAlex 6.1 to obtain the genetic distance, scatter diagram, and the percentage of DNA polymorphism. The data were also analyzed using NTSYS ver.2.2 to obtain a dendrogram cluster using the Unweighted Pair-Group Method using Arithmetic Average (UPGMA). The results showed that DNA polymorphism was found in the wild-type and mutant orchid variants. The percentage of DNA polymorphism of mutant orchid groups was greater than that of wild type orchids. The results of the Principal Coordinate Analysis based on the genetic distance showed that the S. plicata mutant orchid variant was in a different quadrant from the wild type group. Based on the dendrogram cluster, the mutant orchid variants were located away from the wild orchid, which confirmed that the mutant orchid variants have undergone genetic changes.","PeriodicalId":378773,"journal":{"name":"Proceedings of the 7th International Conference on Research, Implementation, and Education of Mathematics and Sciences (ICRIEMS 2020)","volume":"136 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123255391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Design Study of Cajaput Oil Industry Based on Carbon Nanodots","authors":"W. Dwandaru, A. Rahmah, Febriani, Pramudya Wahyu Pradana","doi":"10.2991/ASSEHR.K.210305.061","DOIUrl":"https://doi.org/10.2991/ASSEHR.K.210305.061","url":null,"abstract":"The aim of this study was to produce a design of a cajaput oil industry that can improve the products of cajaput oil industry based on carbon nanodots (C-dots). The method used in this study was research and development (R&D) with observation at the Sendang Mole cajaput oil factory and simple experiments to produce C-dots-based products from solid and liquid wastes of the cajaput oil factory. The results of this study are samples of C-dots-based products obtained from solid and liquid wastes of cajaput oil factory and also a proposed design of improved cajaput oil industry. The improved cajaput oil industry is represented in the form of a process design (Fig. 3) and a cardboard mock-up of the cajaput oil industry (Fig. 4). The current cajaput oil factory in Sendang Mole produces three kinds of products, i.e.: pure cajaput oil (1 product), briquettes (2 product), and compost (3 product). Moreover, by improving the cajaput oil industry according to Figs. 3 and 4, the products can be expanded to an overall 12 products based on the C-dots.","PeriodicalId":378773,"journal":{"name":"Proceedings of the 7th International Conference on Research, Implementation, and Education of Mathematics and Sciences (ICRIEMS 2020)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117040992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Effect of Leaf-Waste Type and Bioconversion Ability Based on Feed Conversion Ratio in Black Soldiers Fly Larvae (Hermetia illucens, L.)","authors":"Ciptono, Suhandoyo, Tri Harjana, Rizka Apriani Putri","doi":"10.2991/ASSEHR.K.210305.003","DOIUrl":"https://doi.org/10.2991/ASSEHR.K.210305.003","url":null,"abstract":"The Black Soldiers Fly (Hermetia illucens) life cycle is unique. The uniqueness lies in the life of the larvae until the pupae and metamorphosis become relatively clean flies, do not like smelly media and tend to be in a moist to dry medium. Unlike some other types of flies, the BSF life cycle brings more advantages than disadvantages. There are various problems related to the ability of BSF larvae to decompose organic waste. An investigation was needed to determine the ability of leaf waste decomposition in the environment which is quite abundant and its potential has not been calculated. Four types of leaf waste that will be tested, namely categories A, B, C, D including A (Ketapang / Ficus Lyrata, FF), B (Markisa / Passion fruit / Passiflora edulis, FM), C (Kelengkeng / Longan / Dimocarpus longan, FK), D (Glodhogan pecut / Polyalthia longifolia, Sonn., FG). Meanwhile, E as control was an exclusive basic feed. The composition of the ratio of [medium: basic feed] BSF in each category A, B, C, and D as a medium for larval rearing, consists of: (80:20), (60:40), (50:50), (40:60) and (20:80) %. Each treatment had 4 replications. The place of maintenance is a plastic tub covered with a plastic net and the initial weight of the media composition is 500 grams. Each tub was maintained by larvae with an average weight of 20 grams/tub until they reached the pupal period. The basic feed was fermented soft bran. The parameters observed were: the bioconversion ability of BSF larvae based on the Feed Conversion Ratio (FCR). Data analysis using a completely randomized design with a nested design on 2 independent variables was carried out using SPSS version 19 software. The results showed that the type of leaf waste and the basic feed ratio had a very significant effect (P <0.01) on the ability of bioconversion based on the Feed Conversion Ratio (FCR) of BSF larvae, and the highest was in the treatment of Passion fruit waste with ratio 50: 50%.","PeriodicalId":378773,"journal":{"name":"Proceedings of the 7th International Conference on Research, Implementation, and Education of Mathematics and Sciences (ICRIEMS 2020)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114351013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Smoothing Spline Estimator in Nonparametric Regression (Application: Poverty in Papua Province)","authors":"N. P. A. M. Mariati, I. Budiantara, V. Ratnasari","doi":"10.2991/ASSEHR.K.210305.044","DOIUrl":"https://doi.org/10.2991/ASSEHR.K.210305.044","url":null,"abstract":"Three estimates were obtained in estimating the regression curve, namely estimation of parametric regression, nonparametric regression and semiparametric regression. The most popular nonparametric regression option is smoothing spline. The advantage of smoothing spline is that it can use variable data at certain sub intervals, so this model needs to find its own data estimation. Smoothing Spline allows characters to function smoothly. In everyday life, data patterns are often found to change at certain sub-intervals, one of which is poverty data in Papua Province. Papua Province is ranked first in the percentage of poor people in Indonesia. The best nonparametric Smoothing Spline regression model for the poverty model in Papua Province with a generalized cross validation (GCV) value of 92.77 and R=99.99%.","PeriodicalId":378773,"journal":{"name":"Proceedings of the 7th International Conference on Research, Implementation, and Education of Mathematics and Sciences (ICRIEMS 2020)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122217650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of Students’ Difficulties in Answering Questions on the Chemistry National Standardized School Exam in Kupang","authors":"F. Asbupel, H. Retnawati, Muhardis, Seriana Yovita, S. Munadi","doi":"10.2991/ASSEHR.K.210305.032","DOIUrl":"https://doi.org/10.2991/ASSEHR.K.210305.032","url":null,"abstract":"The purpose of this study is to describe the characteristics item questions of chemistry national standardized school exam and identify students’ difficulties in answering questions. Data collection was carried out by documenting results of the exam in 2018 in Kupang city. The documentation was consisted of 35 multiple choice questions, keys answer and test results of 103 samples students. This research was a descriptive exploratory study. Data analysis was carried out quantitatively and qualitatively. Quantitative data analysis was performed using the classical test theory approach and item response theory with 1 logistical parameter. Qualitative data analysis was carried out to describe the items that were included in the category of difficult levels of distress and poor differentiation, by means of focus group discussion (FGD). The results showed that there were 8 difficult items out of 35 student test items. Base on the results of FGD, the students' difficulties in answering questions were caused by a lack of conceptual understanding in calculating and using complex formulas. The results of the estimated reliability of the questions amounted to 0.83 which showed that chemistry national standardized school exam questions were in the good reliability category.","PeriodicalId":378773,"journal":{"name":"Proceedings of the 7th International Conference on Research, Implementation, and Education of Mathematics and Sciences (ICRIEMS 2020)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115779187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis Learning Resources Based Local Potential of Pacitan Regency as Biology Learning in Senior High School","authors":"Ezif Rizqi Imtihana, Djukri","doi":"10.2991/ASSEHR.K.210305.020","DOIUrl":"https://doi.org/10.2991/ASSEHR.K.210305.020","url":null,"abstract":"This research is a preliminary study conducted with the purpose to know: 1) kinds of learning resources based local potential of Pacitan regency used as biology learning, 2) biological topic using local potential of Pacitan regency as learning resources, 3) difficulty learning resources based local potential used as biology learning. Data collection technique and instrument used questionnaire and interview with subject of research biology teacher in Senior High School of Pacitan regency. Data analysed descriptively using qualitative approach with the following steps 1) data collection, 2) data reduction, 3) data display, 4) drawing conclusion. The results showed that 75% schools use learning resources based local potential as biology learning with the kinds of local potential big percentage used coastal area, surrounding environment and cattle farm. The use of learning resources based local potential as biology learning most widely applied in biological topics biodiversity, ecosystem, animalia, environmental changes and bacteria. The difficulty learning resources based local potential used as biology learning influenced by factor: learning time, biology teacher, and environment condition.","PeriodicalId":378773,"journal":{"name":"Proceedings of the 7th International Conference on Research, Implementation, and Education of Mathematics and Sciences (ICRIEMS 2020)","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134300263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of Critical Thinking Skill Through Conceptual Change Model Learning Assisted with PhET Simulation","authors":"Zul Hidayatullah, I. Wilujeng, Aminatul Munawaroh","doi":"10.2991/ASSEHR.K.210305.091","DOIUrl":"https://doi.org/10.2991/ASSEHR.K.210305.091","url":null,"abstract":"The aims of this research were 1) to analyze the level of critical thinking skills of students through learning based on the Conceptual Change Model (CCM) assisted by PhET simulation on momentum and impulse material; 2) to determine the differences in critical thinking skills between students who received learning with CCM assisted by PhET simulations and students who received conventional learning. The type of this research is a quasi-experimental research design with Posttest Control Group Design. The study population was all students of class X MIPA SMAN 1 Ngaglik with the sampling technique using simple random sampling. The research sample was students in class X MIPA 2 which were used as the experimental class and students in class X MIPA 1 as the control class. Critical thinking skills are obtained using multiple-choice tests and description tests. The aspects of critical thinking that are measured are basic clarification, inference, analysis, evaluation, and explanation. The analysis in this study uses descriptive statistics and independent t-test. Statistical test results provide a conclusion that there are differences in students' critical thinking skills in the experimental class with the control class. The critical thinking skills of students in the experimental class are higher than those of students in the control class for aspects of basic clarification, inference, evaluation, and explanation. As for the analysis aspect, the control class students were higher than the experimental class. The Critical thinking skill in the experimental class is good with an average of 68.03 and the control class in the moderate category","PeriodicalId":378773,"journal":{"name":"Proceedings of the 7th International Conference on Research, Implementation, and Education of Mathematics and Sciences (ICRIEMS 2020)","volume":"137 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127568622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Study on the Potential of Cow Dung Waste as an Environmentally Friendly Alternative Energy Source","authors":"Ratminingsih, Jumadi","doi":"10.2991/ASSEHR.K.210305.012","DOIUrl":"https://doi.org/10.2991/ASSEHR.K.210305.012","url":null,"abstract":"Cow dung is a very serious problem for people around the farm. The problem is often caused by cow dung which is not handled professionally. Its existence pollutes the environment, disturbs the scenery, and can be a vector of disease. The purpose of this study is to provide an overview of the potential of cow dung waste as an environmentally friendly alternative energy source. This study used a descriptive content analysis study method. The study found that cow dung waste can be processed into biogas. The process is through fermenting the cow dung in a biogas reactor. Biogas has various benefits as an alternative energy source, namely replacing LPG gas and kerosene, power generation, water pump driving, and a substitute for gasoline fuel. The eco-friendly concept boils down to optimizing the use of natural resources while maintaining environmental sustainability. The potential for the utilization of cow dung waste can overcome public complaints about the scarcity of LPG gas and kerosene, expensive electricity bills, fuel, and cases of environmental pollution due to cow dung waste. It is recommended to provide education to the public about the utilization of cow dung to obtain optimal results.","PeriodicalId":378773,"journal":{"name":"Proceedings of the 7th International Conference on Research, Implementation, and Education of Mathematics and Sciences (ICRIEMS 2020)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132705702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of Visual Literacy Test Instrument on High School Physics Material","authors":"E. Agustina, Supahar","doi":"10.2991/ASSEHR.K.210305.074","DOIUrl":"https://doi.org/10.2991/ASSEHR.K.210305.074","url":null,"abstract":"Developing test instruments that can be used to determine students' visual literacy skills on the subject of optics is the aim of this research. This research is a research development with the method of developing test instruments. The phases used in this study consisted of setting test objectives, determining competencies and the material being tested, compiling item distribution matrices, compiling test draft or blueprints, writing and assembling test items, compiling scoring rubrics, the validity of test items, revisions to improve items test, instrument assembly. The instrument used in this study was a questionnaire for the validation of the product being developed. The product developed was in the form of a test instrument to find out visual literacy skills with a multiple-choice format consisting of 5 items. The validation of the test instrument was carried out by 7 expert validators to assess the suitability of the questions on the test instrument with the available assessment indicators. The responses from the validators were analyzed using the Aiken V equation to determine the results of the content validity. The results of the content validity of the visual literacy skills test instrument on each item are 1; 0.93; 0.93; 1; and 0.93. These results provide the conclusion that the visual literacy skills test instrument is contentedly valid appropriate. This research has not been tested for reliability due to the constraints of the COVID-19 pandemic which has closed most schools and made it difficult to carry out reliability tests.","PeriodicalId":378773,"journal":{"name":"Proceedings of the 7th International Conference on Research, Implementation, and Education of Mathematics and Sciences (ICRIEMS 2020)","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133718241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}