Articles
<![CDATA[Social Competence Analysis of Science Teachers During the Covid-19 Pandemic ]]>
<![CDATA[Azhar Azhar]]>;
<![CDATA[Khaikal Ramadhan]]>;
<![CDATA[Dedi Irawan]]>
<![CDATA[ Jurnal Penelitian Pendidikan IPA Vol. 8 No. 3 (2022): July ]]>
Publisher : <![CDATA[Postgraduate, University of Mataram ]]>
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DOI: 10.29303/jppipa.v8i3.1656
<![CDATA[The purpose of this study was to analyze the social competence of science teachers. It was conducted in 22 SMP Negeri Dumai City with a population of 86 science teachers in public junior high schools. The research sample was 71 science teachers calculated using the Slovin formula at an error rate of 0.05%. The instrument used in data collection was a questionnaire that was pre-tested to 30 science teachers (15 science teachers at SMPN Dumai City and 15 science teachers at SMPN Duri). From the 30 items of the questionnaire statement that were tested, the validity of each item was calculated with the product moment correlation with the help of the SPSS version 23, 29 valid items were obtained. Calculation of instrument reliability using the Cronbach Alpha formula was obtained 0.931 very reliable category. Furthermore, the social competence questionnaire instrument for science teachers who had met the validity and reliability requirements was used to collect data for the research sample of 71 science teachers at public junior high schools in the city of Dumai. The results of descriptive data analysis showed that the social competence of science teachers at the Dumai City Junior High School was 54.90% (39 science teachers) in the medium category, 25.30% (18 science teachers) who had high category competence and 19.70% (14 science teachers) out of 71 science teachers in the low category. Thus, the social competence of science teachers in Dumai City Junior High School is mostly in the medium category.]]>
<![CDATA[An Optimum Design Sapphire-Fiber Bragg Grating for High-Temperature Sensing ]]>
<![CDATA[Dedi Irawan]]>;
<![CDATA[Khaikal Ramadhan]]>;
<![CDATA[Azhar Azhar]]>
<![CDATA[ Jurnal Penelitian Pendidikan IPA Vol. 8 No. 3 (2022): July ]]>
Publisher : <![CDATA[Postgraduate, University of Mataram ]]>
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DOI: 10.29303/jppipa.v8i3.1663
<![CDATA[Fiber Bragg grating (FBG) sensors have limitations in measuring high and extreme temperatures because in general FBG sensors are made of silica fiber, which at high temperatures can interfere with the mechanical performance of the materials. In this paper, we propose an S-FBG (Sapphire Fiber Bragg Grating) sensor which is resistant to extreme environmental influences and high temperatures. By developing S-FBG to measure high temperatures, it is found that S-FBG has high sensitivity, every 10C change is obtained and the Bragg wavelength shifts as far as 30.24 nm, this result is greatly influenced by the thermo-optic coefficient, and the coefficient of expansion-thermal. The design also evaluates the Gaussian apodization profile to improve sensor accuracy in monitoring temperature.]]>
<![CDATA[PENERAPAN MODEL PEMBELAJARAN PREDICT-OBSERVE EXPLAIN (POE) SEBAGAI SOLUSI ALTERNATIF UNTUK MENINGKATKAN PEMAHAMAN KONSEP FISIKA SISWA PADA MATERI HUKUM NEWTON KELAS X SMA ]]>
<![CDATA[Nurhasana Nurhasana]]>;
<![CDATA[Zuhdi Ma’aruf]]>;
<![CDATA[Dedi Irawan]]>
<![CDATA[ Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan Vol 9, No 2 (2022): EDISI 2 JULI-DESEMBER 2022 ]]>
Publisher : <![CDATA[Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan ]]>
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<![CDATA[Abstract : Understanding is the level of ability expected by someone in understanding the meaning of the concept. Understanding the concept is a very important part in the learning process. The purpose of this study is to find out that the application of the predict-observe explain (poe) learning model can be an alternative solution to improve students' understanding of physics concepts. This study uses a quasi-experimental research method with a "posttest only control group design" research design. The affordable population is all students of class X MIA MAN 3 Pekanbaru in the 2021/2022 academic year, totaling 144 students. The sample in this study amounted to 72 students consisting of class X MIA 2 as the control class which amounted to 36 students and X MIA 3 as the experimental class which amounted to 36 students. The instrument used is a test of understanding the concept of Newton's Law material. This test refers to 7 indicators of concept understanding according to Widodo. The test questions consist of 21 multiple choice questions and 4 essay questions. After the test, the data on the results of students' understanding of the concept will be presented with descriptive analysis and inferential analysis. This descriptive analysis is seen through the absorption of students. In this inferential analysis using three tests with the help of SPSS version 24, namely normality test, homogeneity test and hypothesis testing with non parametric Mann Whitney. The results showed that the experimental class students' conceptual understanding data by applying the POE learning model had a significant difference than the control class which only used conventional learning.Keywords: Concept Understanding, POE Learning Model, Experimental Method, Newton's Law]]>
<![CDATA[Hexagonal two layers-photonics crystal fiber based on surface plasmon resonance with gold coating biosensor easy to fabricate ]]>
<![CDATA[Dedi Irawan]]>;
<![CDATA[Khaikal Ramadhan]]>;
<![CDATA[Saktioto Saktioto]]>;
<![CDATA[Fitmawati Fitmawati]]>;
<![CDATA[Dwi Hanto]]>;
<![CDATA[Bambang Widiyatmoko]]>
<![CDATA[ Indonesian Journal of Electrical Engineering and Computer Science Vol 28, No 1: October 2022 ]]>
Publisher : <![CDATA[Institute of Advanced Engineering and Science ]]>
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DOI: 10.11591/ijeecs.v28.i1.pp146-154
<![CDATA[In this paper, we investigate a hexagonal two-layer photonic crystal fiber based on surface plasmon resonance (HT-PCF-SPR) which is easy to fabricate as a sensor for detecting the refractive index of analytes. After performing numerical simulations using COMSOL multiphysics based on the finite element method (FEM), it was found that the HT-PCF-SPR could detect the analyte's refractive index in the range 1.34-1.37 RIU and in the wavelength range from 730 nm to 810 nm. The plasmonic material used in the design is gold with a thickness of 40 nm which is located outside the layer and in two opposite air holes in the core. The HT-PCF-SPR design has good performance in detecting analytes, it is found that the sensitivity in detecting analytes is 2,000 nm/RIU, meaning that every 1 RIU shift of analyte shifts the wavelength by 2000 nm. Meanwhile, the sensor resolution obtained from the design is 6.67×10-5 RIU, and it is found that the larger the air hole, the greater the confinement loss value.]]>
<![CDATA[PENINGKATAN KREATIVITAS IBU-IBU PKK MUDA SETIA MELALUI PEMBUATAN SABUN CUCI PIRING EKONOMIS ]]>
<![CDATA[Dedi Irawan]]>;
<![CDATA[Atika Chairinnisa]]>;
<![CDATA[Desyanifransisca Giawa]]>;
<![CDATA[Fajar Rahmat Prayogi]]>;
<![CDATA[Farida Ayuningsi Simanullang]]>;
<![CDATA[Lidia Dewi Marlina Pardede]]>;
<![CDATA[Lydia Damayanti]]>;
<![CDATA[Mega Betrinadyan]]>;
<![CDATA[Muhammad Zidane Nugraha]]>;
<![CDATA[Selvi Rotua Simamora]]>;
<![CDATA[Yana Sartika]]>
<![CDATA[ Nusantara Hasana Journal Vol. 2 No. 5 (2022): Nusantara Hasana Journal, October 2022 ]]>
Publisher : <![CDATA[Nusantara Hasana Berdikari ]]>
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<![CDATA[Dishwashing soap is one of the household items that must be in every home because of its use in cleaning up dirt on cooking utensils. Every household spends a lot of money to buy soap for washing dishes, meanwhile dishwashing soap can be made at home with ingredients that are easy to get and economical value. The lack of public knowledge about the ingredients and methods of making dish soap in Muda Setia Village causes people to spend more money to buy dish soap. Therefore, KUKERTA students at the University of Riau empower the community in Muda Setia Village, especially PKK women in making dish soap. The method used by Kukerta students is by delivering materials and direct demonstrations in front of PKK women. The location selection method is carried out in a purposive manner through considerations that are in accordance with the purpose of service. The purpose of this activity is to provide socialization, empowerment and training to PKK women, most of whom work as housewives and farm laborers in oil palm plantations. Through this empowerment, they succeeded in developing the abilities of women in the village of Muda Setia as well as providing opportunities to open a business by making dishwashing soap that has economic value.]]>
<![CDATA[Design of PCF-SPR for Early Detection of Skin Cancer Infected Cells ]]>
<![CDATA[Dedi Irawan]]>;
<![CDATA[Khaikal Ramadhan]]>;
<![CDATA[Azhar Azhar]]>
<![CDATA[ Jurnal Penelitian Pendidikan IPA Vol. 8 No. 5 (2022): November ]]>
Publisher : <![CDATA[Postgraduate, University of Mataram ]]>
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DOI: 10.29303/jppipa.v8i5.2120
<![CDATA[In this work, we carried out a numerical investigation of the PCF-SPR biosensor for the early detection of infected skin cancer cells and healthy cells. The study was conducted using the COMSOL Multiphysics-based FEM method. The dielectric material used in this PCF design is fused silica, while the plasmonic material is gold. The study was conducted to test the effect of the thickness of the plasmonic layer and the size of the air hole diameter on the PCF-SPR. It was found that the larger the diameter of the air hole in the proposed sensor gives a smaller confinement loss value, while the thicker the plasmonic material used also gives a small confinement loss value. The proposed PCF-SPR has a wavelength sensitivity in detecting skin cancer-infected cells of 7000 nm/RIU. These results indicate that the proposed sensor has a good performance in detecting cells infected with skin cancer.]]>
<![CDATA[Sensor PCF-SPR Terpolarisasi Ganda untuk Deteksi Alkohol pada Suhu Rendah ]]>
<![CDATA[Azhar Azhar]]>;
<![CDATA[Khaikal Ramadhan]]>;
<![CDATA[Dedi Irawan]]>
<![CDATA[ Jurnal Penelitian Pendidikan IPA Vol. 8 No. 5 (2022): November ]]>
Publisher : <![CDATA[Postgraduate, University of Mataram ]]>
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DOI: 10.29303/jppipa.v8i5.2143
<![CDATA[We have observed a numerical simulation of the PCF-SPR sensor detecting alcohol concentration at low temperatures. The investigation was carried out using the finite element method on the PCF-SPR geometric structure. We use a simple geometry structure of the sensor by using fused silica and gold as the sensor’s core and plasmonic material. Observations were made in the alcohol concentration range of 15%, 40%, 60%, and 70%. In the literature, we find the refractive index of each alcohol concentration and input its value into the proposed sensor. The proposed sensor shows that the sensor has a sensitivity in detecting alcohol concentrations at low temperatures of 91 nm/%. In the end, we obtained the optimal sensor components and the sensor can detect the alcohol concentration at low temperatures]]>
<![CDATA[PENERAPAN MODEL PEMBELAJARAN ROPES (REVIEW, OVERVIEW, PRESENTATION, EXERCISE, SUMMARY) UNTUK MENINGKATKAN HASIL BELAJAR KOGNITIF KELAS XI SMA PADA MATERI GELOMBANG BUNYI ]]>
<![CDATA[Adinda Nurul Aini]]>;
<![CDATA[Muhammad Nor]]>;
<![CDATA[Dedi Irawan]]>
<![CDATA[ Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan Vol 9, No 2 (2022): EDISI 2 JULI-DESEMBER 2022 ]]>
Publisher : <![CDATA[Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan ]]>
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<![CDATA[Abstract: The ROPES learning model is a learning model with a complete and interrelated series of activities that can improve students' abilities and active roles in learning. The purpose of this study was to determine the cognitive learning outcomes of class XI high school students by applying the ROPES learning model to sound wave material. The type of research used is experimental research with the "True experimental design" method with the form of research design "Post-test only control design". This research was conducted at MAN 1 Pekanbaru with a total sample of 62 students consisting of 32 students of class XI IPA RISET 2 as the experimental class and 30 students of class XI IPA IT as the control class. The data collection instrument was in the form of a cognitive learning outcome test for sound waves consisting of 20 multiple choice questions. The data analysis used is descriptive analysis in the form of student absorption and inferential analysis in the form of data normality test, data homogeneity test, and hypothesis testing with the Mann Whitney test assisted by SPSS version 26. The results of this study indicate that the cognitive learning outcomes of experimental class students are based on absorption capacity. better than the control class and there is a significant difference in students' cognitive learning outcomes between the experimental class that applies the ROPES learning model and the control class that applies the conventional learning model.Keywords: Cognitive Student Learning Outcome, ROPES Learning Model, Sound Wave]]>
<![CDATA[PENERAPAN PEMBELAJARAN BERBASIS LABORATORIUM VIRTUAL BERBANTUKAN LIVEWORKSHEETS PADA MATERI ALAT OPTIK UNTUK MENINGKATKAN KETERAMPILAN PROSES SAINS SISWA KELAS XI SMAN 16 PEKANBARU ]]>
<![CDATA[Safina Salma Ramadini]]>;
<![CDATA[M.Nor M.Nor]]>;
<![CDATA[Dedi Irawan]]>
<![CDATA[ Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan Vol 9, No 2 (2022): EDISI 2 JULI-DESEMBER 2022 ]]>
Publisher : <![CDATA[Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan ]]>
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<![CDATA[Abstract : Students science process skills are aspects that must be trained through hands-on practicals. In fact, the lack of adequate practicum facilities in the physics laboratory causes students to rarely do practicums so that students' scientific process skills do not develop. Along with the rapid development of technology, there has been an innovation in the form of a virtual laboratory as an alternative solution for schools that lack practical tools and materials. This study aims to determine the differences in students' science process skills between classes that apply virtual laboratory-based learning assisted by live worksheets and classes that apply conventional learning. The type of research used is Quasi-Experiment with Post-test Only design, Non-Equivalent Control Group Design. The data collection instrument was in the form of post-test questions (scientific process skills test). Data were analyzed using descriptive analysis and inferential analysis. The results of the descriptive analysis showed that the students' science process skills in the experimental class were higher than the control class. This was shown in the experimental class, the percentage of students' average KPS scores reached 78.76% and the control class 66.59%. From the results of data analysis, it can be concluded that students' science process skills between classes with virtual laboratory-based learning assisted by live worksheets are better than classes with conventional learning on optical instrument material in class XI SMAN 16 Pekanbaru.Keywords: Optical Instrument, Science Process Skills, Virtual Laboratory, Liveworksheets]]>
<![CDATA[Development of Scientific-Based Newton's Law Teaching Aids Using Arduino Uno Microcontroller ]]>
<![CDATA[Stefiana Lenisa]]>;
<![CDATA[Azizahwati Azizahwati]]>;
<![CDATA[Dedi Irawan]]>
<![CDATA[ Journal of Natural Science and Integration Vol 5, No 2 (2022): Journal of Natural Science and Integration ]]>
Publisher : <![CDATA[Universitas Islam Negeri Sultan Syarif Kasim Riau ]]>
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DOI: 10.24014/jnsi.v5i2.17241
<![CDATA[This research is intended to develop Newton's law teaching aids to understand Newton's law material in high school. In this study, validation process was carried out by three expert lecturers i.e. expert in the media field, expert in the material field, and expert in the pedagogic field. The data collection technique was carried out by providing a validation questionnaire in the form of a checklist. After that, the collected data were than analyzed using descriptive analysis by calculating the average of each indicator used to determine the validity of Newton's law teaching aids and the developed guidebook. The results of the study stated that the teaching aids and guidebooks on Newton's law materials developed were valid at a very satisfactory level. Therefore it can be concluded that Newton's law teaching aids have been successfully developed and can be used in the learning process.Keywords: newton's law, teaching aids, arduino uno, microcontroller.]]>
