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Jurnal Penelitian Pendidikan IPA (JPPIPA)
Published by Universitas Mataram
ISSN : 24602582     EISSN : 2407795X     DOI : -
Core Subject : Science, Education, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Materials Science & Nanotechnology Physics
Science Educational Research Journal is international open access, published by Science Master Program of Science Education Graduate Program University of Mataram, contains scientific articles both in the form of research results and literature review that includes science, technology and teaching in the field of science. The Science Educational Research Journal is published twice in a year in January and July editions. The editors receive writing in Indonesian or English, either from the university or from outside the university.
Arjuna Subject : -
Articles 6,421 Documents
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Dimensional Reduction of QSAR Features Using a Machine Learning Approach on the SARS-Cov-2 Inhibitor Database Munaya Azizah; Arry Yanuar; Firdayani Firdayani
Jurnal Penelitian Pendidikan IPA Vol 8 No 6 (2022): December
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v8i6.2432

Abstract

Quantitative Structure-Activity Relationship (QSAR) is a method that relates the chemical composition of a molecule to its biochemical, pharmaceutical and biological activities. The characteristics of a molecule's chemical constituents, such as chemical descriptors and fingerprints, are necessary to create a good QSAR model. Dimensionality reduction can alleviate the issue of several unnecessary and redundant chemical descriptors and chemical fingerprints in a high-dimensional feature-number data set by shrinking the high-dimensional original space to a low-dimensional intrinsic space. There are two categories of dimensional reduction techniques: feature extraction and feature selection. The dimension reduction approach can be utilized as a starting step in running a QSAR Virtual Screening Model on a dataset of SARS-CoV-2 inhibitor medications to create novel treatments for Covid-19 cases based on machine learning (ML) and the idea of medicinal repurposing. Fe extraction and feature selection are crucial to determining which feature sets should be applied to a specific classification process in QSAR modeling to produce reliable virtual screening results. The SARS-Cov-2 inhibitor drug database's chemical descriptor and chemical fingerprint were extracted using a simple, quick, and accurate method in this work. The total number of selected features is 12122 features. PCA, Missing values, and Random Forest are the techniques employed. The Xgboost Tree Ensemble, Naive Bayes, Support Vector Machine, Random Forest, and Deep Learning (Artificial Neural Network/Multilayer Perceptron) were used to classify the QSAR modeling on the training and test data. The Random Forest approach, when applied to all chemical descriptors and chemical fingerprint features, along with the XGBoost algorithm, yields the best feature selection results (accuracy value of 0.845 and AUC of 0.904). There are 233 characteristics for the regression QSAR approach and 273 features for the feature selection-based QSAR method of classification. Next, virtual screening of QSAR modeling of prospective drugs for Covid-19 therapy can be done utilizing the outcomes of the characteristics that have been chosen using the Random Forest approach
Analisis Tingkat Pemahaman Konsep Sains Mahasiswa Calon Guru Sekolah Dasar Hasnawati Hasnawati; Muhammad Syazali; Arif Widodo
Jurnal Penelitian Pendidikan IPA Vol. 8 No. 6 (2022): December
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v8i6.2438

Abstract

Understanding the concept is one of the most important parts of realizing a teacher's professional competence. As elementary school teacher candidates, Elementary School Teacher Education students must have good conceptual understanding skills to realize the expected professional competence. This study aims to analyze elementary school teacher candidates' level of understanding of science concepts, specifically on temperature and heat, electricity, magnetic fields, and the solar system. This type of research is quantitative descriptive with research subjects of Elementary School Teacher Education Study Program students who program elementary science education courses. The total sample of 218 was selected by purposive sampling. Data on understanding the science concepts of elementary school teacher candidates were collected using a three-level test instrument equipped with a Certain Response Index (CRI). Results of data analysis showed that 46.27% understood the concept well, 9.04% understood the concept but were unsure, 30.90% had misconceptions and 13.67% did not know the concept. The data illustrates that the number of elementary school teacher candidates who experience misconceptions is still quite high. The causes of misconceptions among students in understanding science concepts include material that is abstract, complex, has many mathematical equations and contains many images that are difficult to explain physically. Based on the results of this study, it is necessary to provide positive feedback and improve learning to facilitate elementary school teacher candidates so that they can understand science concepts easily and correctly.
Desain Small-Scale Chemistry Pada Pembelajaran Praktikum Kimia Umum Julia Mardhiya; Fadhillah Nur Laila
Jurnal Penelitian Pendidikan IPA Vol. 8 No. 6 (2022): December
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v8i6.2440

Abstract

Hands-on chemistry activity or practical work is an important aspect of teaching at the high school and college level as part of the science education curriculum. This study aims to design Small-scale Chemistry (SSC) for general chemistry practical work. The product are laboratory work manual and practical kit. The development model used is ADDIE model (Analysis, Design, Development, Implementation, and Evaluation). At the analysis stage, five experiment will be designed to become SSC. There are five experiments, namely determining the order of the reaction, observation the shift in chemical equilibrium, identification acid-base with indicators, determining the strength of the acid and water electrolysis. The feasibility of the manual and practical kit in content feasibility (0.84), language feasibility (0.90), presentation feasibility (0.84), graphic feasibility (0.90), and kit feasibility (0.94). All are categorized as valid based on the validity criteria of Aiken's V. The results of the implementation show that the SSC design can be implemented and the results can be observed for General Chemistry experiment learning activities. The chemicals used for the experiment are far less than the macro-scale practical work. This is in accordance with the SSC principle.
The Application of Instagram Social Media to Qualitative Analysis Materials for Groups I and II to Increase Student Interest in Learning Deni Ainur Rokhim; Hayuni Retno Widarti; Munzil Munzil; Neena Zakia
Jurnal Penelitian Pendidikan IPA Vol. 8 No. 6 (2022): December
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v8i6.2446

Abstract

This study aims to determine the effectiveness of the application of Instagram media on students' interest in learning group I and II cation analysis materials. The data collection method used qualitative analysis with a descriptive approach. The results of the media validation get an average score of 84.27%, so the media is very feasible to be used in this study. Respondents in this study were students who followed the @kimiafun2022 Instagram account and interacted in answering questions and responses on Instagram. The study results show that the Instagram application can effectively increase student interest in learning about group I and II cation analysis materials, which is considered problematic
The Effectiveness of the Combination of Lethal Ovitrap Attractant of Local Organic Materials and Natural Larvicides in Dengue Hemorrhagic Fever Endemic Areas Erlin Yustin Tatontos; I Wayan Getas; Urip Urip
Jurnal Penelitian Pendidikan IPA Vol. 8 No. 6 (2022): December
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v8i6.2448

Abstract

Dengue fever is a viral infection that is transmitted to humans through the bite of an infected mosquito. Dengue prevention and control depends on effective vector control measures, including lethalovitrap.The purpose of this study was to determine the effectiveness of mango leaf infusions (Mangifera indica), rambutan leaves (Nephelium lappaceum) and cashew leaf (Anacardium ocidentale) in lethal ovitrap a combination of ethanol extract of rambutan leaves (Nephelium lappaceum), srikaya seed water extract (Annona squomosa) and Baccilus thuringiensis var israelensis (Bti) in the endemic area of ​​Mataram City Dengue Fever, This study was an experimental study that tested and analyzed the effectiveness of  nine lethal ovitrap atractant combination. The population and sample of this study were Aedes aegypti mosquitoes female from colonization from endemic areas of DHF in Mataram City. The laboratory test results from nine effective lethal ovitrap combination attractants were Cashew leaf infusion and Rambutan leaf ethanol extract with trapped eggs of Aedes aegypti mosquitoes averaging 133 grains and no eggs hatching into larvae. Statistical analysis with ANOVA followed by the Tukey HSD post-Hoc test with a significant difference of <0.05 the effectiveness of the combination of lethal ovitrap attractants, especially Cashew leaf infusion and ethanol extract from rambutan leaves and Rambutan leaf infusion and rambutan leaf ethanol extract. The results of the field test were the percentage of the number of eggs trapped in combination of Cashew leaf infusion (41.6%) and Rambutan leaf infusion with ethanol extract of Rambutan leaves (58.4%).
Evaluation of Kinetic Parameters of Nitrification Process in Biofilter System to Efluent Liquid Waste of Tofu Industry Nyimas Yanqoritha; Kuswandi; Sulhatun Sulhatun
Jurnal Penelitian Pendidikan IPA Vol 8 No 6 (2022): December
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v8i6.2453

Abstract

It is necessary to design a nitrification bioreactor process so that further processing takes place optimally. Performance studies are carried out by evaluating the kinetic parameters that apply specifically to the applied process. The Monod model was applied to determine the value of kinetic parameters in designing and operating a bioreactor. This study aims to determine the value of the kinetic parameters to variations in feed concentration (50, 75, and 100%). The mechanism of the reactor process for the decomposition of pollutants, the influent is fed into the reactor with an up-flow pristaltic pump. The decomposition process provides contact time between organic matter and microorganisms, resulting in a good separation from the reactor outlet. The most optimum kinetic parameter value at 100% wastewater concentration with a value of (k) 1.1086 (dayˉ 1), (Ks) 1.0564 g l-1, (Y) 5.4862 mg MLVSS/mg, (kd) 1.7944 (dayˉ 1), (µm) 6.8372 (dayˉ 1).
Development of Basic Chemistry Teaching Material Chemical Education Based on Entrepreneurship Epinur Epinur; Yusnidar Yusnidar; Minarni Minarni
Jurnal Penelitian Pendidikan IPA Vol. 8 No. 6 (2022): December
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v8i6.2456

Abstract

The current government policy is that scholars do not look for work anymore, but create jobs. Furthermore, the Minister of Education and Culture launched an independent campus policy that carried four policies. The second policy is the right of students to study outside the study program, for example to become entrepreneurs. From the government's policy and the Minister of Education and Culture, entrepreneurship-based basic chemistry teaching materials are needed. The purpose of this research is to develop entrepreneurship-based basic chemistry teaching materials that are feasible theoretically and practically. This teaching material is expected to provide opportunities for students to become entrepreneurs. The development model used is the 4-D model (Four D) developed by Thiagarajan consisting of 4 main stages, namely: Define, Design, Develop and Disseminate. Based on the analysis of student needs, the orientation of the dominant college student is to become an ASN. They are interested in entrepreneurship in the chemical field as a side job. However, they hope that the lecturers in teaching link the course material with the field of business. The teaching materials "Basic Chemistry based on Entrepreneurship" that have been developed obtained a score of 94.8% and 86.6% from material experts and entrepreneurship experts (theoretically). The responses of 2 basic chemistry lecturers were 90.6% and 88%, while the student responses were 93.3% (practically). From the validation data of material experts and entrepreneurship experts, it can be concluded that the teaching materials developed are theoretically feasible. Based on the responses of 2 basic chemistry lecturers and student responses, the teaching materials developed were declared practical
Analysis Understanding Participant Educate to Theory Rate Reaction Hayuni Retno Widarti; Sri Yamtinah; Mawardi Mawardi; Deni Ainur Rokhim; Ari Syahidul Siddiq; Afis Baghiz Syafruddin; Titin Sriwahyuni; Zalfa Adhya Rachmanita; Elvira Risva Firda Amalia; Allykha Baharsyah; Tria Anggraini
Jurnal Penelitian Pendidikan IPA Vol. 8 No. 6 (2022): December
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v8i6.2462

Abstract

Initial understanding is the ability to build early based on experience and knowledge possessed by using grammar that is still relevant to new knowledge. This study aims to explore the experience and knowledge of students to determine the initial understanding of the reaction rates topic. The method used is a questionnaire as a research instrument. In total, 100 students from SMA in Malang, East Java were selected using the purposive sampling method. From these questions, the types of questions are grouped based on alternative answers and sub-material questions and include 3 levels of representation, namely macroscopic, sub-microscopic, and symbolic. Then students' answers are presented and then the students' initial abilities are described following the answers given by students. In teaching and learning activities, students often encounter concepts of knowledge that are constructed independently by students so that when new knowledge is given, there are often differences in understanding or differences in concepts with actual information. The quantitative findings show that in general students' understanding of concepts is 'good', especially on the basic concepts of the reaction rate topic. However, in several sub-materials such as reaction orders, reaction order graphs, and chemical reaction equations in the reaction rate concept topic, there are still conceptual errors experienced by students so improvements and emphasis on concepts are needed in some of these sub-materials so the percentage of correct answers from students is greater from the previous.
Validitas dan Praktikalitas E-Modul Berbasis Mobile Learning Berbantuan 3D Page Flip Professional Pada Materi Ekologi dan Perubahan Lingkungan di Kelas X SMA Muhamad Sholichin; Abdul Razak; Lufri Lufri; Irdawati Irdawati
Jurnal Penelitian Pendidikan IPA Vol. 8 No. 6 (2022): December
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v8i6.2467

Abstract

This study aims to produce a valid and practical Mobile Learning (ML)-Based E-Module Assisted by the 3D Page Flip Professional Application. This type of research is development research using the Plomp model. The development stage of this model begins with the initial investigation stage, the development or prototyping stage, and the assessment stage. The instruments used in this development research were teacher interview guideline instrument sheets, student response questionnaire sheets, self-evaluation sheets, and E-Module validation sheets by experts, as well as e-module practicality assessment sheets filled in by teachers and students. The results showed that the 3D Page Flip Professional Application Assisted Mobile Learning (ML) Based E-Module based on expert judgment was very valid with a score of 89.10%. Practicality assessment of student assessment in field trials (large group evaluation) with a score of 88.95% with very practical criteria, and practicality assessment by the teacher obtained a score of 93.75% with very practical criteria. It can be concluded that the 3D Page Flip Professional Application Assisted Mobile Learning (ML) Based E-Module that has been developed is in the category of very valid, and very practical.
Analysis of Structure, the Composition of Vegetation, and Diversity of Epiphytes and Their Hosts Anthoneta, Y. C. Paiki; Maikel Simbiak; Edoward Krisson Raunsay
Jurnal Penelitian Pendidikan IPA Vol. 8 No. 6 (2022): December
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v8i6.2492

Abstract

The tourist area of Kali Bak Kampung Harapan Sentani Jayapura Regency is one of the buffer zones for the Cycloop Mountains nature reserve which has the function of a rainwater catchment area and supply of drinking water for the people of Jayapura Regency and City, but currently, the tourist spot is experiencing intensive disturbances and threats. This condition is the reason for this study to be carried out to analyze epiphytic plant vegetation and their hosts in the Kali Bak tourism area, Harapan Sentani Village, Jayapura Regency. The purpose of this study was conducted to determine the structure and composition of the vegetation as well as the diversity of epiphytes and their hosts at the Kali Bak tourist spot, Harapan Sentani Village, Jayapura Regency. Data collection was carried out using transect methods, documentation methods, and plot methods. There are 25 observation plots with a plot size of 20 x 20 meters which are placed on the right and left of the transect line. The results showed that 5 families of 8 species were Asplenium nidus L., Davallia trichomanoides BL., Dendrobium sp, Drynaria quercifolia (L). J.sm., Drynaria rigidula (Sw.).Bedd., Microsorum sp, Microsorum punctatum, and Nephrolepis falcata (Cav.) C. Chr. As for the host tree species, 6 families were obtained consisting of 6 species including Alstonia scholaris (L.) R. Br., Calophyllum inophyllum, Cycas rumphii Miq., Ficus virens Aiton., Gymnostoma papuana Miq., Intsia bijuga (Colebr.) OK. The overall diversity index for epiphytic plants, which is 1.98, is moderate. The overall diversity index for host trees is 1.26 which is moderate

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