Pub Date : 2021-03-08DOI: 10.2991/ASSEHR.K.210305.022
H. Sutanto, J. Ikhsan, Endang Widjajanti Lfx, E. Priyambodo
The increasing activity of the leather tanning industry has resulted in an increasing amount of liquid waste produced. The waste contains heavy metals which are harmful to the environment and human health. Therefore the waste needs to be managed so that the negative impact of this waste can be reduced. The increase in the amount of liquid waste has an impact on increasing the cost of treating this waste. Using inexpensive materials can reduce waste treatment costs. This research aims to make ceramic membranes for application in the processing of leather tanning wastewater. Natural kaolinite is abundant and cheap so it has the potential to produce cheap ceramic membranes. The ceramic membrane is made using kaolinite powder. Polyvinyl alcohol is used as a pore forming agent. The effect of increasing the amount of polyvinyl alcohol adding on membrane characteristics was studied. The variations of the polyvinylalcohol composition studied were 0%, 2%, 4% and 6%. The characteristics studied were porosity, morphology, flux, and membrane rejection. The results showed that the greater the polyvinyl alcohol composition, the higher porosity and membrane flux. The rejection value decreases with increasing amount of polyvinyl alcohol. The higher the polyvinyl alcohol composition resulted in an inhomogeneous membrane surface. The resulted membrane were categorized as microfiltration membrane which has membrane pore diameter range of 0.1-10 μm.
{"title":"Chrome Cation Removal Using Microfiltration Ceramic Membrane From Kaolinite","authors":"H. Sutanto, J. Ikhsan, Endang Widjajanti Lfx, E. Priyambodo","doi":"10.2991/ASSEHR.K.210305.022","DOIUrl":"https://doi.org/10.2991/ASSEHR.K.210305.022","url":null,"abstract":"The increasing activity of the leather tanning industry has resulted in an increasing amount of liquid waste produced. The waste contains heavy metals which are harmful to the environment and human health. Therefore the waste needs to be managed so that the negative impact of this waste can be reduced. The increase in the amount of liquid waste has an impact on increasing the cost of treating this waste. Using inexpensive materials can reduce waste treatment costs. This research aims to make ceramic membranes for application in the processing of leather tanning wastewater. Natural kaolinite is abundant and cheap so it has the potential to produce cheap ceramic membranes. The ceramic membrane is made using kaolinite powder. Polyvinyl alcohol is used as a pore forming agent. The effect of increasing the amount of polyvinyl alcohol adding on membrane characteristics was studied. The variations of the polyvinylalcohol composition studied were 0%, 2%, 4% and 6%. The characteristics studied were porosity, morphology, flux, and membrane rejection. The results showed that the greater the polyvinyl alcohol composition, the higher porosity and membrane flux. The rejection value decreases with increasing amount of polyvinyl alcohol. The higher the polyvinyl alcohol composition resulted in an inhomogeneous membrane surface. The resulted membrane were categorized as microfiltration membrane which has membrane pore diameter range of 0.1-10 μm.","PeriodicalId":378773,"journal":{"name":"Proceedings of the 7th International Conference on Research, Implementation, and Education of Mathematics and Sciences (ICRIEMS 2020)","volume":"81 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":"114732667","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}
Pub Date : 2021-03-08DOI: 10.2991/ASSEHR.K.210305.080
M. Nirmala, D. A. Gebze, A. M. R. Tumanggor, M. Lengkong, I. Wilujeng
This research aimed to (1) produce learning tools and e-book media using Problem Based Learning (PBL) model to improve image representation ability on optical material of class XI MIPA students at SMAN 1 Banguntapan; (2) know the effectiveness of e-book learning media in physics learning activities using PBL model; (3) find out the improvement of image representation ability of students at SMAN 1 Banguntapan. This research was a developmental research with the 4D model. The results showed that (1) learning tools and e-book media using PBL model were appropriate to be used in physics learning activities. (2) e-book learning media was effectively used in physics learning. (3) improvement on the students' image representation ability increased significantly.
{"title":"Physics Learning with E-Book Using Problem Based Learning (PBL) Model to Improve Image Representation Ability of High School Students on Optical Material","authors":"M. Nirmala, D. A. Gebze, A. M. R. Tumanggor, M. Lengkong, I. Wilujeng","doi":"10.2991/ASSEHR.K.210305.080","DOIUrl":"https://doi.org/10.2991/ASSEHR.K.210305.080","url":null,"abstract":"This research aimed to (1) produce learning tools and e-book media using Problem Based Learning (PBL) model to improve image representation ability on optical material of class XI MIPA students at SMAN 1 Banguntapan; (2) know the effectiveness of e-book learning media in physics learning activities using PBL model; (3) find out the improvement of image representation ability of students at SMAN 1 Banguntapan. This research was a developmental research with the 4D model. The results showed that (1) learning tools and e-book media using PBL model were appropriate to be used in physics learning activities. (2) e-book learning media was effectively used in physics learning. (3) improvement on the students' image representation ability increased significantly.","PeriodicalId":378773,"journal":{"name":"Proceedings of the 7th International Conference on Research, Implementation, and Education of Mathematics and Sciences (ICRIEMS 2020)","volume":"47 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":"124825800","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}
Pub Date : 2021-03-08DOI: 10.2991/ASSEHR.K.210305.001
K. Pertiwi
Millions of people have suffered from coronavirus disease (COVID)-19 worldwide with diverse clinical presentations, ranging from asymptomatic to severe pneumonia leading to respiratory failure and even death. In critical phases, thrombosis and inflammation are considered as the important contributors in the processes. Extracellular traps (ETs), meshes-like chromatin DNA decorated with antimicrobial proteins, have become interesting features in immunothrombosis research due to their pro-inflammatory, pro-thrombotic and pro-coagulant properties. These traps, released by innate inflammatory cells, mark a distinct form of cell death namely etosis. Whether etosis may also participate in the thrombotic inflammation of Covid-19 progression and whether the roles are beneficial or detrimental are still not much known. This review presents current knowledge on the formation, properties and roles of ETs in human non-infectious diseases, particularly in inflammation, thrombosis and coagulopathy, followed by an exploration on how SARS-CoV2 may trigger the formation of ETs. Next, the pathogenesis of Covid-19 is briefly discussed, gathering current findings on the involvement of ETs in the immunopathological mechanisms during Covid-19 infection. Lastly, this review discusses the potential roles of etosis in the progression of Covid-19, thereby targeting the extracellular traps as a severity biomarker and/or a therapeutic approach in the management of Covid-19.
{"title":"Potential Roles of Extracellular Traps in the Progression of Coronavirus Disease (Covid)-19","authors":"K. Pertiwi","doi":"10.2991/ASSEHR.K.210305.001","DOIUrl":"https://doi.org/10.2991/ASSEHR.K.210305.001","url":null,"abstract":"Millions of people have suffered from coronavirus disease (COVID)-19 worldwide with diverse clinical presentations, ranging from asymptomatic to severe pneumonia leading to respiratory failure and even death. In critical phases, thrombosis and inflammation are considered as the important contributors in the processes. Extracellular traps (ETs), meshes-like chromatin DNA decorated with antimicrobial proteins, have become interesting features in immunothrombosis research due to their pro-inflammatory, pro-thrombotic and pro-coagulant properties. These traps, released by innate inflammatory cells, mark a distinct form of cell death namely etosis. Whether etosis may also participate in the thrombotic inflammation of Covid-19 progression and whether the roles are beneficial or detrimental are still not much known. This review presents current knowledge on the formation, properties and roles of ETs in human non-infectious diseases, particularly in inflammation, thrombosis and coagulopathy, followed by an exploration on how SARS-CoV2 may trigger the formation of ETs. Next, the pathogenesis of Covid-19 is briefly discussed, gathering current findings on the involvement of ETs in the immunopathological mechanisms during Covid-19 infection. Lastly, this review discusses the potential roles of etosis in the progression of Covid-19, thereby targeting the extracellular traps as a severity biomarker and/or a therapeutic approach in the management of Covid-19.","PeriodicalId":378773,"journal":{"name":"Proceedings of the 7th International Conference on Research, Implementation, and Education of Mathematics and Sciences (ICRIEMS 2020)","volume":"13 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":"125234986","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}
Pub Date : 2021-03-08DOI: 10.2991/ASSEHR.K.210305.021
R. Almareta, Paidi
ICT knowledge is very much needed in the current digital era by biology teacher, because teachers can design and develop technology to help students reach the success in the modern era with an great value of learning. Teaching experience is grouped into four categories, (< 5 years); (6-10 years); (10-15 years); and (>15 years). Gender is devied into female and male teacher. This study aims to know the biology teacher’s ICT knowledge profile based on the teaching experience and gender. Respondents in this study were 96 of biology teachers. The instrument in this research using multiple choice tests that have been validated by expert judgement and empirical validity using ANATES. Based on inferential analysis it can be concluded that there is a significant difference between the teaching experience and gender with the ICT knowledge of biology teacher. In the aspect knowledge of media ICT sig 0.003 < 0.005, knowledge of ICT learning resources and knowledge of use LMS, sig 0.000 < 0.005. That means the length long time of teaching and gender affect ICT knowledge of biology teachers.
{"title":"The Profile ICT Knowledge of Biology Teachers Based on Teaching Experience and Gender","authors":"R. Almareta, Paidi","doi":"10.2991/ASSEHR.K.210305.021","DOIUrl":"https://doi.org/10.2991/ASSEHR.K.210305.021","url":null,"abstract":"ICT knowledge is very much needed in the current digital era by biology teacher, because teachers can design and develop technology to help students reach the success in the modern era with an great value of learning. Teaching experience is grouped into four categories, (< 5 years); (6-10 years); (10-15 years); and (>15 years). Gender is devied into female and male teacher. This study aims to know the biology teacher’s ICT knowledge profile based on the teaching experience and gender. Respondents in this study were 96 of biology teachers. The instrument in this research using multiple choice tests that have been validated by expert judgement and empirical validity using ANATES. Based on inferential analysis it can be concluded that there is a significant difference between the teaching experience and gender with the ICT knowledge of biology teacher. In the aspect knowledge of media ICT sig 0.003 < 0.005, knowledge of ICT learning resources and knowledge of use LMS, sig 0.000 < 0.005. That means the length long time of teaching and gender affect ICT knowledge of biology teachers.","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":"130215890","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}
Pub Date : 2021-03-08DOI: 10.2991/ASSEHR.K.210305.015
N. Fadhila, B. Subali
The purpose of this study was to determine the opinion of elementary school teachers about the learning continuum based on the level of abstractness in the biological resource management aspect. This study used a survey method, conducted in Yogyakarta City and Bantul Regency. The population in this study followed the hypothetical population rules and sample convinience according to Daniel (1989), in this case the sample convinience was 156 respondents as representatives of the hypothetical population who had the same characteristics as the sample characteristics. Total of 156 respondents consisted of elementary school teachers from grade I to grade VI. The data analysis technique in this study used descriptive analysis techniques to obtain the mode score. The results of this study indicate that some of the sub-aspects of the aspect of biological resource management are taught in grade four and grade six elementary schools with abstractness levels of 2 "concrete" and 3 "kind of abstract".
{"title":"Teachers’ Opinions About Learning Continuum Based on the Level of Abstractness in the Biological Resources Management Aspect","authors":"N. Fadhila, B. Subali","doi":"10.2991/ASSEHR.K.210305.015","DOIUrl":"https://doi.org/10.2991/ASSEHR.K.210305.015","url":null,"abstract":"The purpose of this study was to determine the opinion of elementary school teachers about the learning continuum based on the level of abstractness in the biological resource management aspect. This study used a survey method, conducted in Yogyakarta City and Bantul Regency. The population in this study followed the hypothetical population rules and sample convinience according to Daniel (1989), in this case the sample convinience was 156 respondents as representatives of the hypothetical population who had the same characteristics as the sample characteristics. Total of 156 respondents consisted of elementary school teachers from grade I to grade VI. The data analysis technique in this study used descriptive analysis techniques to obtain the mode score. The results of this study indicate that some of the sub-aspects of the aspect of biological resource management are taught in grade four and grade six elementary schools with abstractness levels of 2 \"concrete\" and 3 \"kind of abstract\".","PeriodicalId":378773,"journal":{"name":"Proceedings of the 7th International Conference on Research, Implementation, and Education of Mathematics and Sciences (ICRIEMS 2020)","volume":"65 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":"127446695","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}
Pub Date : 2021-03-08DOI: 10.2991/ASSEHR.K.210305.051
Indra Kusuma Wijayanti, A. Abadi
This study aims to produce and describe the development process and quality of learning set with the STEM-PBL approach. The development model in this study was adopted from Plomp model, it is preliminary research, development, and evaluation. The learning set developed include lesson plan and student’s worksheet for Statistics material in class VIII using the STEM PBL approach. The quality of development can be measured by its validity, practicality, and effectiveness. The learning set with STEM-PBL that was delevoped is valid, it was found that the warriors got very good criteria. Practically besause in the observations of the learning implementation, it is known that learning is carried out by 90% (teacher activities) and 96% (student activities) so that learning is carried out properly according to plan. Meanwhile, the results of teacher assessments and student responses were good.The learning set is effective because the results of the student’s mathematical connection ability test at high category with the acquisition of an average value of 14.2, the students learning motivation at high category with an average score of 81.7. The results of this study, it can be concluded that the mathematics learning set developed is feasible to use.
{"title":"Developing Learning Set with STEM-PBL Approach to Mathematics Connection Ability and Student’s Learning Motivation","authors":"Indra Kusuma Wijayanti, A. Abadi","doi":"10.2991/ASSEHR.K.210305.051","DOIUrl":"https://doi.org/10.2991/ASSEHR.K.210305.051","url":null,"abstract":"This study aims to produce and describe the development process and quality of learning set with the STEM-PBL approach. The development model in this study was adopted from Plomp model, it is preliminary research, development, and evaluation. The learning set developed include lesson plan and student’s worksheet for Statistics material in class VIII using the STEM PBL approach. The quality of development can be measured by its validity, practicality, and effectiveness. The learning set with STEM-PBL that was delevoped is valid, it was found that the warriors got very good criteria. Practically besause in the observations of the learning implementation, it is known that learning is carried out by 90% (teacher activities) and 96% (student activities) so that learning is carried out properly according to plan. Meanwhile, the results of teacher assessments and student responses were good.The learning set is effective because the results of the student’s mathematical connection ability test at high category with the acquisition of an average value of 14.2, the students learning motivation at high category with an average score of 81.7. The results of this study, it can be concluded that the mathematics learning set developed is feasible to use.","PeriodicalId":378773,"journal":{"name":"Proceedings of the 7th International Conference on Research, Implementation, and Education of Mathematics and Sciences (ICRIEMS 2020)","volume":"10 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":"121172889","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}
Pub Date : 2021-03-08DOI: 10.2991/ASSEHR.K.210305.045
N. Atikah, D. L. Afifah, N. Kholifia
The minimum wage determination has always been a moment that is eagerly awaited every year by both workers and employers, even though it always creates polemics. The government seeks to raise the minimum wage every year to guarantee a decent life for workers. The fulfillment of the need for a decent living is different in each region so that it will affect the minimum wage in that area. If the minimum wage applies to city/regency areas, it is called the city minimum wage (CMW). The size of the CMW varies widely and even raises an extensive range so that outliers appear. Many factors influence the minimum wage, including Decent Living Needs (KHL), Consumer Price Index (CPI), Gross Regional Domestic Product (GRDP), labor force participation rate, per capita income, number of job seekers, number of the labor force, expenditure per capita, economic growth, and level of productivity. Modeling with regression analysis can be used to get the best model and the factors that affect CMW. Because the size of the CMW in each region is different, and there are outliers, a robust spatial regression analysis is used. This research will compare the results of the analysis of robust SAR and robust SEM using the method of moment estimation in modeling the variables that affect the city minimum wage (CMW). From the analysis, the best model is obtained from the robust SEM model, which has a smaller AIC value than the AIC value of the robust SAR model.
{"title":"Robust Spatial Regression Model in City Minimum Wages (CMW) in East Java 2018","authors":"N. Atikah, D. L. Afifah, N. Kholifia","doi":"10.2991/ASSEHR.K.210305.045","DOIUrl":"https://doi.org/10.2991/ASSEHR.K.210305.045","url":null,"abstract":"The minimum wage determination has always been a moment that is eagerly awaited every year by both workers and employers, even though it always creates polemics. The government seeks to raise the minimum wage every year to guarantee a decent life for workers. The fulfillment of the need for a decent living is different in each region so that it will affect the minimum wage in that area. If the minimum wage applies to city/regency areas, it is called the city minimum wage (CMW). The size of the CMW varies widely and even raises an extensive range so that outliers appear. Many factors influence the minimum wage, including Decent Living Needs (KHL), Consumer Price Index (CPI), Gross Regional Domestic Product (GRDP), labor force participation rate, per capita income, number of job seekers, number of the labor force, expenditure per capita, economic growth, and level of productivity. Modeling with regression analysis can be used to get the best model and the factors that affect CMW. Because the size of the CMW in each region is different, and there are outliers, a robust spatial regression analysis is used. This research will compare the results of the analysis of robust SAR and robust SEM using the method of moment estimation in modeling the variables that affect the city minimum wage (CMW). From the analysis, the best model is obtained from the robust SEM model, which has a smaller AIC value than the AIC value of the robust SAR model.","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":"115280044","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}
Pub Date : 2021-03-08DOI: 10.2991/ASSEHR.K.210305.005
C. Amarantini, V. C. Prakasita, Lidia Ester Cahyani
Lactic acid bacteria (LAB) produce bacteriocin, which is potentially administered as biopreservative. It is important to study bacteriocin continuously from an applied perspective. However, isolate LAB strain Pr 4.3L obtained from peda fish are known to produce antimicrobial compounds such as bacteriocin. Therefore, it is important to optimize the production of bacteriocin from these strains by examining the effect of incubation temperatures and pH on the activity of LAB strain Pr 4.3L. The biomass of lactic acid bacteria strain Pr 4.3L was grown in MRS broth medium with pH conditions of 4-8 which was adjusted using 1 N HCl and NaOH. Furthermore, the culture was incubated at 30 and 37°C for 36 hours, and the bacteriocin activity was tested for its inhibition against pathogenic bacteria (S.aureus ATCC 25923, S.typhi BPE 122.4 CCA and S.typhi NCTC 786) using agar well diffusion method. The treatment at 30°C on MRS broth medium with a pH of 7 is the best growth condition for bacteriocin production. Under these conditions, antimicrobial and bacteriocin activities are more inhibited than other treatments. This inhibition showed a broad-spectrum against indicator bacteria (S.aureus ATCC 25923, S.typhi BPE 122.4 CCA and S.typhi NCTC 786). Therefore, the results provided useful information on the potential of bacteriosinogenic LAB as a natural preservative.
{"title":"The Effect of Temperatures and pH on Bacteriocin Activity of Lactic Acid Bacteria Strain Pr 4.3L From Peda Fish","authors":"C. Amarantini, V. C. Prakasita, Lidia Ester Cahyani","doi":"10.2991/ASSEHR.K.210305.005","DOIUrl":"https://doi.org/10.2991/ASSEHR.K.210305.005","url":null,"abstract":"Lactic acid bacteria (LAB) produce bacteriocin, which is potentially administered as biopreservative. It is important to study bacteriocin continuously from an applied perspective. However, isolate LAB strain Pr 4.3L obtained from peda fish are known to produce antimicrobial compounds such as bacteriocin. Therefore, it is important to optimize the production of bacteriocin from these strains by examining the effect of incubation temperatures and pH on the activity of LAB strain Pr 4.3L. The biomass of lactic acid bacteria strain Pr 4.3L was grown in MRS broth medium with pH conditions of 4-8 which was adjusted using 1 N HCl and NaOH. Furthermore, the culture was incubated at 30 and 37°C for 36 hours, and the bacteriocin activity was tested for its inhibition against pathogenic bacteria (S.aureus ATCC 25923, S.typhi BPE 122.4 CCA and S.typhi NCTC 786) using agar well diffusion method. The treatment at 30°C on MRS broth medium with a pH of 7 is the best growth condition for bacteriocin production. Under these conditions, antimicrobial and bacteriocin activities are more inhibited than other treatments. This inhibition showed a broad-spectrum against indicator bacteria (S.aureus ATCC 25923, S.typhi BPE 122.4 CCA and S.typhi NCTC 786). Therefore, the results provided useful information on the potential of bacteriosinogenic LAB as a natural preservative.","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":"130637756","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}
Pub Date : 2021-03-08DOI: 10.2991/ASSEHR.K.210305.067
A. Aththibby, H. Kuswanto, Mundilarto
The COVID-19 pandemic has influenced global conditions globally, including in the world of education in Indonesia. The implication of the COVID-19 pandemic is learning that initially focused on face-to-face shifting to distance learning / online learning. This condition is also a challenge in learning physics. This is inseparable from learning physics which requires experimental activities therein. This article will review the potential use of various platforms in solving laboratory-based physics learning problems in the COVID-19 pandemic era. To produce a comprehensive analysis of this potential picture, a systematic literature review is conducted. The analysis shows that various platforms are very potential in solving physics learning problems that require experiments for physics teachers in the pandemic era COVID-2019.
{"title":"Experiments in Physics Learning in the COVID-19 Era: Systematic Literature Review","authors":"A. Aththibby, H. Kuswanto, Mundilarto","doi":"10.2991/ASSEHR.K.210305.067","DOIUrl":"https://doi.org/10.2991/ASSEHR.K.210305.067","url":null,"abstract":"The COVID-19 pandemic has influenced global conditions globally, including in the world of education in Indonesia. The implication of the COVID-19 pandemic is learning that initially focused on face-to-face shifting to distance learning / online learning. This condition is also a challenge in learning physics. This is inseparable from learning physics which requires experimental activities therein. This article will review the potential use of various platforms in solving laboratory-based physics learning problems in the COVID-19 pandemic era. To produce a comprehensive analysis of this potential picture, a systematic literature review is conducted. The analysis shows that various platforms are very potential in solving physics learning problems that require experiments for physics teachers in the pandemic era COVID-2019.","PeriodicalId":378773,"journal":{"name":"Proceedings of the 7th International Conference on Research, Implementation, and Education of Mathematics and Sciences (ICRIEMS 2020)","volume":"99 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":"115513457","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}
Pub Date : 2021-03-08DOI: 10.2991/ASSEHR.K.210305.049
B. W. Widyastuti, E. Retnowati
Cognitive load theory is an instructional theory that concern to designing an effective learning strategy based on human cognitive system. Worked example was designed based on this theory. Through worked example, students are presented with examples and similar problem solving tasks. This method is believe to reduce extraneous cognitive load. Recent studies reveals that worked example are highly effective for novices, then further tests are needed on effects of this strategy for experts. To test these, total of 118 junior high school students are asked to solve geometry problems and they measured on procedural skills. This experiment compared two levels of learner prior knowledge (expert vs novice) and two learning strategies (worked example vs problem solving). It can be concluded that prior knowledge plays an important role in the effectiveness of learning strategy. Worked example enhanced procedural skills of novices, but it does not effect on experts. Minimum guidance such as problem solving strategy was more effective for experts. Giving worked example to experts causes redundancy effect and extraneous cognitive load. These findings for educational practice in mathematics suggest teacher to designing effective learning strategy by considered students’ prior
{"title":"Effects of Worked Example on Experts’ Procedural Skills in Solving Geometry Problems","authors":"B. W. Widyastuti, E. Retnowati","doi":"10.2991/ASSEHR.K.210305.049","DOIUrl":"https://doi.org/10.2991/ASSEHR.K.210305.049","url":null,"abstract":"Cognitive load theory is an instructional theory that concern to designing an effective learning strategy based on human cognitive system. Worked example was designed based on this theory. Through worked example, students are presented with examples and similar problem solving tasks. This method is believe to reduce extraneous cognitive load. Recent studies reveals that worked example are highly effective for novices, then further tests are needed on effects of this strategy for experts. To test these, total of 118 junior high school students are asked to solve geometry problems and they measured on procedural skills. This experiment compared two levels of learner prior knowledge (expert vs novice) and two learning strategies (worked example vs problem solving). It can be concluded that prior knowledge plays an important role in the effectiveness of learning strategy. Worked example enhanced procedural skills of novices, but it does not effect on experts. Minimum guidance such as problem solving strategy was more effective for experts. Giving worked example to experts causes redundancy effect and extraneous cognitive load. These findings for educational practice in mathematics suggest teacher to designing effective learning strategy by considered students’ prior","PeriodicalId":378773,"journal":{"name":"Proceedings of the 7th International Conference on Research, Implementation, and Education of Mathematics and Sciences (ICRIEMS 2020)","volume":"42 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":"115457530","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}
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