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Palm kernel shells (PKS) were washed with water and glacial acetic acid (CH3COOH) gradually to prepare them for co-firing with coal. They were then torrefied at 450ºC for one hour. Washing was done to reduce the concentration of ash and alkaline oxides, which would reduce the chance of slagging and fouling. The research was conducted considering that information about washing the PKS with acetic acid and then having them torrefied is very limited and unclear. The results showed that washed and torrefied PKS had better characteristics than those of raw PKS or PKS washed with water. PKS that is washed with acid, torrefied and then blended with coal has low slagging and medium fouling tendencies. However, based on ash fusion temperature, the inclination towards slagging and fouling is high under reducing conditions and medium under oxidation conditions.

The primary aim of this study is to delve into the experiences of postgraduate EFL students in using ChatGPT and to uncover the strategic approaches they implement throughout their writing process. This qualitative case study research design engages 16 Master’s degree students from four different universities in Indonesia, each with varying levels of English proficiency. Findings indicate a positive reception of ChatGPT among EFL students, who note its versatility in improving vocabulary, grammar, idea generation, essay structuring, and language refinement. Students utilize a range of strategies in their interactions with ChatGPT, including critical evaluation, peer consultation, and the use of primary research sources, which demonstrates its adaptability as an educational resource. These findings suggest that ChatGPT could revolutionize EFL instruction by serving as an adaptable cognitive tool that aligns with diverse pedagogical models and cognitive development stages. Its capabilities support educational theories such as Scaffolded Writing, Distributed Cognition, and Cognitive Flexibility Theory, which enhance students’ self-efficacy and academic success. However, the study’s reliance on self-reported data and its limited sample size are notable limitations, potentially impacting the generalizability of the results. The study recommends that future research with a broader, more diverse sample and a mixed-methods framework could provide deeper insights into the effectiveness of ChatGPT in EFL contexts and its potential to augment students’ writing competencies.

PT.X, a coal mining company in South Kalimantan, Indonesia, plans to use the highwall mining method to excavate marginal reserves on the final slope to maintain production. However, the stability of the slope and determination of the highwall mining dimensions are major concerns due to unfavourable rock mass conditions caused by intensive weathering and tectonics. This paper aims to evaluate the feasibility of highwall mining in the study area using empirical, analytical and numerical methods. The innovation of this research is the integration of these methods, which include rock mass classification, analytical calculation of load and rock support strength, 2D and 3D numerical modelling, and estimation of recovered coal from the highwall design. The initial condition assessment using rock mass classification and analytics calculation of the mining geometry model determined mine openings and pillar dimensions. Numerical modelling re-evaluated the geometry models to obtain an optimal design. The suggested optimal thickness, mine opening, web pillars, and barrier pillars are 3.20, 3.00, 3.50, and 4.00 m, respectively, with four web pillars in one panel at Seam-C and 2.50, 3.00, 3.50, and 4.00 m with four web pillars in one panel at Seam-D. The recovery of coal for Seam-C and Seam-D is estimated to be 40.54%. Deformation was found to have the closest relationship with the dimensions of the mine opening, and the safety factor is most sensitive to changes in the depth of the mine opening. This study provides a reference for future highwall mining in Indonesia and other regions with similar conditions.

It is widely recognized that vegetation plays a significant role in contrasting slope instability through the root reinforcement. The main objectives of this paper are to evaluate the root tensile of selected Pennisetum species, namely, P. pedicellatum (PPd) and P. polystachion (PPl), and to determine the soil shear strength of root-permeated soil from these species. The selected species were initially planted in the polybags using the hydroseeding technique. A mineral fertilizer of NPK ratio 10 : 8 : 10 was adopted in the hydroseeding mixture. Routine watering program was applied twice a day throughout growth observation for six months. Four replications were prepared for each species including a set of control polybags, which contained only soil for reference and comparison. The results of root tensile tests revealed the significant relationships between root diameter and tensile force. In comparison, the PPl was still indicated by higher values of root tensile force than PPd. The presence of roots clearly has contributed to the shear stress of root-permeated soils. The root density based on root biomass measurement attributed to the higher value of peak shear stress as achieved by PPl than PPd. The combined effects of root tensile and the soil shear strengths of this selected species can be used as biological materials in slope protection against erosion.

Abstract Faculty of Computer Science is one of the Faculty of the University of Lancang Kuning Pekanbaru, consists of 2 (two) study programs namely Information Systems and Informatics Engineering. Electronic Physics and Advanced Electronics is a compulsory subject for the students of Informatics Engineering Faculty of Computer Science. This course provides an understanding of electronics components. Theoretically, Informatics Engineering students have obtained material about the electronic component. However, the mastery of electronics is not separated by the process of practicum. The problem that occurs is the lack of mastery of electronics in practice. Currently, the practicum process has not been implemented and has an impact on the lack of students' ability in terms of electronics practice. Seeing these conditions then there should be efforts to equip students in the Information Engineering practically in the use of electronic components. One of the knowledge and skills is the use of electronics components in simple circuit is through the training of diode usage in rectifier circuit. The result of this community service activity is the participants' knowledge about electronic defenisi, 100% of participants already know it with 8% increase and the knowledge of electronic component from participant is increase 24%. The participants' knowledge about the use of diodes in the rectifier circuit is 72% and the participants already know the technique of electronic component soldering which is initially 24% and an increase of 76%. Keywords— Electronics, diode, rectifier Abstrak Fakultas Ilmu Komputer adalah salah satu Fakultas di Universitas Lancang Kuning Pekanbaru, terdiri dari 2 (dua) program studi yaitu Sistem Informasi dan Teknik Informatika. Fisika Elektronika dan Elektronika Lanjut adalah mata kuliah wajib bagi mahasiswa Teknik Informatika Fakultas Ilmu Komputer. Mata kuliah ini memberikan pemahaman tentang komponen elektronika. Secara teoritis mahasiswa Teknik Informatika telah memperoleh materi tentang komponen elektronika tersebut. Namun, penguasaan ilmu elektronika ini tidak terlepas dengan adanya proses praktikum. Permasalahan yang terjadi adalah kurangnya penguasaan ilmu elektronika secara praktek. Saat ini, proses praktikum belum dilaksanakan dan berdampak kepada kurangnya kemampuan mahasiswa dari segi praktek elektronika. Melihat kondisi tersebut maka haruslah ada upaya untuk membekali mahasiswa Teknik Informatika secara praktis dalam penggunaan komponen elektronika. Salah satu pengetahuan dan keterampilan adalah penggunaan komponen elektronika pada rangkaian sederhana adalah melalui pemberian pelatihan penggunaan dioda pada rangkaian penyearah. Hasil Kegiatan pengabdian kepada masyarakat ini adalah pengetahuan peserta tentang defenisi elektronika, 100% peserta sudah mengetahuinya dengan peningkatan sebesar 8% serta pengetahuan komponen elektronika dari peserta terjadi peningkatan sebesar 24%. Peningkatan pengetahuan peserta tentang penggunaan dioda pada rangkaian penyearah sebesar 72% dan peserta sudah mengetahui teknik penyolderan komponen elektronika dimana awalnya 24% dan terjadi peningkatan sebesar 76%. Kata kunci— Elektronika, Dioda, Penyearah

Magang dan studi independen bersertifikat (MSIB) merupakan salah satu program dari kurikulum MBKM yang mana pada program ini membuka kesempatan bagi mahasiswa untuk belajar langsung di tempat kerja/industri yang dapat menjadi bekal bagi mahasiswa untuk persiapan karier kedepannya. Dengan banyaknya pilihan bidang keahlian pada program MSIB, seringkali menjadi suatu tantangan bagi mahasiswa untuk dapat memilih bidang MSIB yang sesuai dengan keahlian mereka. Tujuan dari penelitian ini adalah mengimplementasikan salah satu algoritma klasifikasi machine learning, yakni algoritma Random Forest untuk membantu proses pemetaan bidang MSIB di Prodi Pendidikan Informatika. Dataset yang digunakan pada penelitian ini berjumlah 100 data, dimana label klasifikasi berjumlah 4 diantaranya MM (multimedia), RPL (rekayasa perangkat lunak), AI (kecerdasan buatan), dan TKJ (teknik komputer dan jaringan), atribut yang digunakan adalah nilai mata kuliah mahasiswa. Hasil yang didapatkan antara lain tingkat akurasi sebesar 80%, precision 80%, dan recall 82%. Maka dapat disimpulkan model klasifikasi bidang MSIB menggunakan algoritma Random Forest termasuk kategori baik. Certified internships and independent studies (MSIB) are one of the programs in the MBKM curriculum, where this program opens up opportunities for students to learn directly in the workplace/industry which can provide students with preparation for future careers. With so many areas of expertise to choose from in the MSIB program, it is often a challenge for students to be able to choose an MSIB area that suits their skills. The aim of this research is to implement one of the machine learning classification algorithms, namely the Random Forest algorithm, to assist the process of mapping the MSIB field in the Informatics Education Study Program. The dataset used in this research consists of 100 data, of which there are 4 classification labels, including MM (multimedia), RPL (software engineering), AI (artificial intelligence), and TKJ (computer and network engineering), the attribute used is the course grade. student. The results obtained include an accuracy rate of 80%, precision of 80%, and recall of 82%. So it can be concluded that the MSIB field classification model using the Random Forest algorithm is in the good category.

This study aims to describe English listening materials taught by teachers in EFL class and the compatibility between available English listening materials teachers use and curriculum. It is due to teaching listening requires the use of media such as video, compact disk, and computer. The use of those media demands teachers’ competence in operating them. This study uses descriptive qualitative method. The subject of the research is thirteen English teachers. Research data was collected by using documentation and interview. The data was analyzed by using qualitative procedure which includes transcription, coding, categorizing, and conluding. The findings showed that English listening materials in EFL classroom are categorized into three. They are media, content, and exercise. English listening materials are in line to English curriculum. Teachers use materials and methods that are suitable to learning outcome of English listening skills.

This study aims to develop the competence of teachers in designing English learning materials through electronic English book design training. This study was action research. The training was given to 7 English teachers at the Madrasah Tsanawiyah level (Islamic junior high school) with more than 5 years of teaching experience and proficiency in using computers. Data were collected by using product assessment, observation, and interviews. The data was analyzed by using descriptive qualitative analysis. The results show that teachers can create electronic books for English learning after receiving learning technology training with training materials including: (1) designing materials through PowerPoint, (2) changing materials in electronic form through I-spring, and (3) making electronic books with the android extension via APK builder. Indicators of the teacher’s competence in designing electronic books include: (1) being able to independently design the content in terms of explanation materials in the form of images, audio, and video and exercises in the form of quizzes equipped with assessments and (2) being able to independently design the appearance or layout of an electronic book consisting of cover, layout, and buttons.

This study aims to produce teaching materials in the form of student worksheets by using the context of Riau traditional house on the material of quadrilaterals and triangles for class VII of Junior High School. This developmental research uses Plomp model which consists of a preliminary analysis stage, development stage, and assessment stage. The test subjects in this study were seventh grade students of SMP N 2 Kampar Utara which consisted of 18 students and one mathematics teacher. The subjects of this research were seventh grade students of SMP N 2 Kampar Utara which consisted of 18 students and one Mathematics teacher. The result of this study is to produce student worksheets by using Riau traditional house context on valid, practical, and effective quadrilateral and triangle material.It can be seen that based on the results of the validation of content experts, an average of 3.42 was obtained in the very valid category, the results of the validation of linguists and cultural experts obtained an average of 3.25 which was included in the very valid category.The results of the practicality of student worksheets at the One-to-One and Small Group stages are 87.6% which are included in the very practical category, and the results of the practicality of student worksheets by the teacher are 87.5% in the very practical category. Furthermore, based on the results of effectiveness, it was found that student worksheets using the context of the Riau traditional house were very effective and suitable for use in the classroom.

This study aims to determine the profile of dissolved oxygen and H2S based on depth in the Jatiluhur Reservoir related to fish culture in floating net cages. The scope of this research is focused on the location of floating net cage cultivation. Dissolved oxygen distribution is classified as a positive heterograde type where dissolved oxygen levels higher in the metalimnion layer due to the photosynthesis process that occurs effectively by aquatic plants and phytoplankton. Jatiluhur Reservoir shows signs of organic pollution, with BOD5 and COD levels exceeding the quality standard. This organic substance comes from the waste of floating net cages. BOD5 and COD values that exceed the quality standard result in increased oxygen consumption during the decomposition process; therefore, a hypoxic layer occurs. This occurrence can cause water conditions to become anoxic, producing H2S gas. The H2S value in the Jatiluhur Reservoir was observed to exceed 0.002 mg/L and showed an increase in the metalimnion layer.

The Jatiluhur Reservoir is an important building in West Java Province whose dams the Citarum River. The location of the Jatiluhur Reservoir, which is the most downstream of the Saguling and Cirata Reservoirs, is where domestic, industrial, and agricultural wastewater pollution is accommodated from water catchment areas so that water quality decreases. This study aims to analyze the water quality in this reservoir at various depths. The study was conducted in September 2020 at 16 sampling points at a depth of 0-8 meters. The water quality parameters analyzed were Temperature, Dissolved Residue (TDS), pH, Dissolved Oxygen (DO), Fluoride (F-), Nitrate (NO3-N), Sulfate (SO42-), BOD5, COD, and Escherichia coli. Based on the study results, it was found that the concentrations of DO, BOD5 and COD at the monitoring location of the Jatiluhur Reservoir did not meet the quality standards. The concentrations of DO, BOD5 and COD respectively 1.00-3.99 mg/L; 3.10-17.00 mg/L; and 28.00-59.00 mg/L. These three parameters contribute to the decline in water quality. The status of water quality using the IP method is categorized as lightly polluted so that it affects the utilization of this reservoir, especially as raw water for drinking water. The highest level of contamination was at the floating net cages sampling location at a depth of 8 m. The decline in water quality in the Jatiluhur Reservoir is caused by organic substances originating from floating net cages waste.

Research on the isolation, toxicity test, antimalarial test, and identification of the active compound from the ethyl acetate fraction of Stylissa massa sponge from Oenggae waters, Rote Island, has been conducted. This study aimed to investigate the antimalarial activity of the ethyl acetate fraction of the Stylissa massa sponge. Isolation was carried out by the extraction method using a mixed solvent of methanol: dichloromethane of 3: 2 (v/v), then the extract was partitioned in a solvent mixture of ethyl acetate: water of 1: 2 (v/v). The ethyl acetate extract obtained was separated by column chromatography using the gradient polarity system method. The toxicity test of each fraction was carried out by the Brine Shrimp Lethality Test (BSLT) method, and the antimalarial test was carried out by the haematin polymerization inhibition method. Identification of compounds from the active fraction in the antimalarial test was carried out using Liquid Chromatography-Mass Spectrometry (LC-MS). The extraction yield was 1.14 g (0.23%) of the ethyl acetate extract in the form of a dark brownish-yellow oily solid. Separation by column chromatography resulted in 15 fractions. Toxicity test results showed the four most active fractions with LC50 values, which are very promising for new drug discovery. The IC50 value in the antimalarial activity test of the four fractions indicated that the Stylissa massa sponge ethyl acetate extract was more active than the standard chloroquine compound (115 μg/mL). The LC-MS analysis indicates that fraction 11 contains two compounds that have been reported, and 1 compound is unknown. In contrast, fraction 14 indicates that it contains three compounds that have been reported and one unknown compound.

This study aims to prove and analyze the application of the jurisprudential inquiry method based on the Edmodo electronic learning media to improve students' critical thinking skills in the Citizenship Education course. This type of research uses classroom action research by developing a model from Stephen Kemmis & Robin McTaggart in the form of a cycle of planning, action and observation, and reflection. The research subjects were 32 students. The data collection technique used a structured observation instrument and a free description test. The data analysis technique used descriptive statistics frequencies with the help of the SPSS 24 application to process the data from the student critical thinking observation questionnaire, the one sample t test with SPSS 24 to see the results of student learning completeness, and the nonparametric test - binomal test with SPSS 24 to see the results classical student learning mastery. The results showed that the high level of critical thinking of students in the Citizenship Education course by applying the jurisprudential inquiry learning method assisted by the Edmodo application. Learning Citizenship Education is no longer a boring subject for students because lecturers can apply learning methods and learning media that are combined innovatively, creatively, and effectively.

Research with information checking as a form of character management in education aims to determine the level of curiosity and responsibility of society, in this case, young people to report, to see how they manage the information obtained and disseminated. This research was conducted by survey method. The sampling technique using proportionate stratified random sampling to get a sample from the population in Vocational Health of Sadewa Yogyakarta. Instruments data acquisition using a questionnaire that contained 15 questions covering questions in the curiosity and responsibility for the information obtained. Based on the data obtained, it was found that there is a nursing class score of interest is 134, and commitment is 98. While the pharmaceutical grade score of curiosity is 148, and accountability is 78. The item of interest looked more significant than the things responsible for the information. Based on the calculation to be obtained percentage nursing class of 65.5% and pharmaceutical grade amounted to 67.25%. It is certainly still far from the ideals percentage of 100%. So it needs more attention to the cultivation of character the young generation in the era of freedom of information.

This study aims to find out whether there is significant difference of pedagogical challenge and resilience between English elementary, junior, and senior high school teachers or not; and to find out the correlation between teachers’ pedagogical challenge and teachers’ resilience. This study is quantitative research. Two kinds of questionnaires were administered to find out data about pedagogical challenge and resilience. Sample of this study was 84 English teachers consists 11 elementary schools teachers, 52 junior high schools teachers, and 21 senior high schools teachers. Data was analyzed by using descriptive statistic, t-test significance and Pearson correlation. The findings show that: (1) there is no significant difference of pedagogical challenges between elementary, junior, and senior Islamic school teachers, (2) there is no significant difference of resilience between elementary, junior, and senior Islamic school teachers, and (3) there is no correlation between teachers’ pedagogical challenges and teachers’ resilience.

Tujuan penelitian ini adalah untuk mengetahui aspek historis, kultural, filosofis, dan matematis dari fenomena anak-anak berambut gembel di Kabupaten Wonosobo sehingga ditemukan relevansi tradisi upacara cukur rambut gembel (ruwatan) yang dapat di implementasikan dalam pembelajaran matematika. Penelitian ini adalah penelitian lapangan dengan metode kualitatif dan pendekatan deskriptif kualitatif. Sumber data penelitian terdiri atas sumber data primer dan sumber data sekunder. Sumber data primer diperoleh dengan metode wawancara terhadap Kepala Bidang Kebudayaan Dinas Pariwisata dan Kebudayaan Kabupaten Wonosobo dan salah satu tokoh sesepuh atau pemangku adat Kabupaten Wonosobo, sedangkan sumber data sekunder diperoleh dengan studi dokumen. Adapun hasil penelitian ini menunjukan bahwa: (1) tradisi cukur rambut gembel merupakan budaya yang berkembang sejak lama di masyarakat Kabupaten Wonosobo yang sarat akan aspek historis, kultural, filosofis, dan matematis (2) terdapat 14 aspek matematis menurut Alan J. Bishop dalam upacara cukur rambut gembel (3) aspek matematis yang terdapat dalam cukur rambut gembel dapat di kembangkan dalam pembelajaran matematika (4) hasil review ahli menunjukan bahwa kajian etnomatematika diperoleh skor rata-rata sebesar 4,0715 dengan indeks valid/memuaskan (5) Relevansi antara cukur rambut gembel, etnomatematika, dan pembelajaran matematika terdapat pada bentuk tumpeng yang menyerupai bangun kerucut dan unit of time (satuan waktu dalam Kalender Jawa) yang dapat di aplikasikan dalam soal berbentuk HOTS.

Tujuan penelitian ini adalah melakukan analisis tahap awal dalam mengembangkan Lembar Kerja Peserta Didik berbasis Konstruktivisme untuk memfasilitasi kemampuan pemahaman konsep matematis peserta didik secara optimal. Penelitian ini menggunakan model Borg and Gall yang terdiri dari sepuluh tahap, namun pada penelitian ini hanya dilakukan tahap pertama yaitu tahap preliminary reseacrh. Untuk tahap pertama yaitu tahap awal penelitian dilakukan analisis kebutuhan, analisis peserta didik, analisis kurikulum, analisis konsep, serta analisis bahan ajar yang ada. Berdasarkan hasil analisis pendahuluan, maka dapat diperoleh kesimpulan bahwa untuk dapat mengasah kemampuan pemahaman konsep matematis peserta didik guru membutuhkan perangkat pembelajaranyang dapat membantu memfasilitasi peserta didik untuk menumbuh dan mengembangkan kemampuan pemahaman konsep matematisnyapadamateri program linier. Melalui LKPD yang didasarkan pada salah satu strategi atau pendekatan yang telah terbukti untuk meningkatkan kemampuan pemahaman konsep yaitu Konstruktivisme, maka akan mendapatkan hasil yang dapat membantu peserta didik mengembangkan kemampuan pemahaman konsepnya.

The purpose of this research is to conduct an initial analysis in developing students' worksheets (Lembar Kerja Peserta Didik, LKPD) based on Problem Based Learning (PBL) to develop mathematical problem-solving ability optimally. This research used the first stage on the ADDIE Model, an analysis model. Analysis activity in this research was begun with need analysis, learners’ analysis, curriculum analysis, and construct analysis. Based on the result of the analysis stage, it can be concluded that to be able to strengthen students’ ability to fix mathematical problems, teachers provide learning resources that will facilitate students to enhance and develop their mathematical problem-solving abilities on multiple occurrence opportunities material. Through the students’ worksheet which is based on PBL as a proven approach, the use of students’ worksheets can help learners develop their problem-solving ability.

This study aimed to examine the potential of micro-lectures as effective technology-based learning media in mathematics. It proposed a hypothesis that using micro-lectures affects learning satisfaction and achievement in mathematics. Data were collected using a questionnaire developed from the acceptance model theory (TAM) and the extended Expectation Confirmation Model (ECM). Respondents comprised 233 students from six classes that used micro-lectures to learn mathematics for one semester at a public junior high school. The data were analyzed quantitatively using structural equation modeling assisted by SMART PLS 3.0 software. The results showed that perceived usefulness was the most significant factor in the learning achievement. Student attitude towards micro-lectures was the strongest positive factor in learning satisfaction. Furthermore, the proposed model explained 76.9% and 77.3% of the factors related to learning and satisfaction in using micro-lectures, respectively. It implies that micro-lectures affect learning satisfaction and achievement in mathematics. These results indicate that using micro-lectures in mathematics lessons increases learning satisfaction and achievement. They could assist schools, teachers, and local education ministries in planning, evaluating, and implementing micro-lectures in teaching and learning activities to improve education quality.

This study was aimed to investigate English need of sharia bank employees in Parepare. The design research was qualitative research. Subject of the research was 12 employees in 3 sharia banks in Parepare. Research data was collected by using interview. The findings showed that: (1) Islamic bank employees need English materials relate to banking, accounting, and computer application; and (2) Islamic bank employees need reading skills more than listening, speaking, and writing skills because they work more with English written documents. Bank employees also work with computer program. All instructions and terms in computer are in English. The employees need good pronunciation in English term of banking, accounting, and computer. They also need skills in correspondence in electronic letter or email.

Learning equipment is important things that determine the quality of the learning process and output. We need a study about validity, practicality, and effectiveness of the learning equipment to ensure teaching and learning quality. The purpose of this research is to evaluate the validity of the learning equipment based on guided discovery, especially the students’ worksheets. This research was a descriptive qualitative research that provides the result of students’ worksheets and experts' recommendations. The experts who validated these student’s worksheets were three experts on mathematics education. The instruments used in this study was the validation sheets for LKPD. The result of validation sheets analysis for LKPD showed that in general, the students’ worksheets were valid. The validity of the didactical aspect and contents aspect sequently were 0,667 dan 0,704.

Beras non aromatik kurang diminati konsumen. Salah satu upaya untuk meningkatkan nilainyadengan mewangikannya. Tujuan penelitian ini untuk mempelajari pengaruh penambahan oleoresinpandan pada pewangian beras non aromatik terhadap aroma beras secara organoleptik, total fenol, respon gula darah dan indeks glikemik. Metode yang digunakan adalah perendaman beras non aromatik(IR64) menggunakan oleoresin pandan wangi dengan variasi konsentrasi 0,25% dan 0,5%. Hasilpenelitian membuktikan bahwa rekayasa pewangian berhasil dilakukan. Hasil uji aroma secaraorganoleptik menunjukkan bahwa aroma beras wangi memiliki tingkat aroma wangi 1,8 hingga 2,8 kalilebih wangi dibandingkan kontrol beras IR64 dan 0,8 hingga 1,8 kali lebih wangi dibandingkan beraspandan wangi. Kandungan senyawa fenol dalam beras wangi lebih besar dibandingkan kontrol. Semakinmeningkat konsentrasi oleoresin yang diberikan maka kehilangan fenol selama pemasakan menjadi nasisemakin rendah. Beras wangi terbukti memiliki respon gula darah yang lebih rendah daripada kontrol.Selain itu, beras wangi juga terbukti memiliki nilai indeks glikemik yang lebih rendah daripada kontrol. Kata kunci: aroma beras, pewangian, oleoresin pandan, respon gula darah DOI : https://doi.org/10.33005/jtp.v13i1.1510

This research aimed to examine the effectiveness of technology-based English teaching material development training to improve students’ learning outcomes. This research used quasi-experimental design. The instrument of this research was a multiple-choice test. In collecting data, the writers applied pre-test, treatment, and post-test to students. There were four pre-service teachers who involved in the treatment of this research. Two of them taught in experimental classes and the other two taught in control classes. Pre-service teachers who taught in experimental classes had been trained for ten meetings, while those who taught in control classes had not been trained. This research used SPSS 17 to analyze the data. The result of this research found that there was significant difference of students’ learning outcomes between experimental and control classes after having the treatment. Students’ learning outcomes in experimental classes was higher than in control classes. The effect size of significant level after calculated by Eta squared was 0,042. Event though it had small effect, the technology-based English teaching material training given to the pre-service teachers was quite effective to improve students’ learning outcome in MTs Negeri Parepare.

Tujuan penelitian ini adalah menganalisis kemampuan komunikasi matematis peserta didik Bangkinang dalam menyelesaikan soal PISA 2015. Indikator kemampuan komunikasi matematis yang dilihat yaitu kemampuan menulis, meggambar, dan mampu membuat ekspresi matematis. Metode penelitian yang digunakan adalah deskripsi kualitatif yaitu menggambarkan mengenai kemampuan komunikasi yang dimiliki peserta didik Bangkinang dalam menyelesaikan soal PISA 2015. Instrumen yang digunakan berupa soal PISA 2015 paket 1. Peserta didik masih kesulitan dalam membuat model matematika dari permasalahan yang diberikan, memilih strategi yang tepat guna memecahkan permasalahan yang diberikan, diikuti dengan rendahnya kemampuan peserta didik merefleksikan grafik ke dalam ide matematika yang mana termasuk kategori drawing. Ringkasan dari analisis ketujuh soal PISA 2015 yang dikategorikan soal Komunikasi Matematis yaitu (1) Written Text, Pada soal nomor 15; 10,26% peserta didik berkemampuan tinggi; 2,56% berkemampuan sedang; dan 87,18% berkemampuan rendah. (2) Mathematical Expression, Pada soal nomor 12; 15,38% peserta didik berkemampuan tinggi; 15,38 peserta didik berkemampuan sedang; dan 69,24% berkemampuan rendah. (3) Drawing, Pada soal nomor 30; 82,05% peserta didik berkemampuan tinggi; dan 17,94% berkemampuan rendah. Berdasarkan penelitian yang telah dilaksanakan pada 39 peserta didik, dapat disimpulkan bahwa kemampuan komunikasi matematis peserta didik SMP di Bangkinang melalui penyelesaian soal PISA 2015 masih rendah pada kategori Mathematical Expression.

Tujuan penelitian ini adalah melakukan analisis tahap awal dalam mengembangkan Lembar Kerja Peserta Didik berbasis Problem Based Learning. mengembangkan kemampuan pemecahan masalah matematis secara optimal. Penelitian ini menggunakan model Plomp yang terdiri dari tiga tahap, Untuk tahap pertama yaitu tahap awal penelitian dilakukan analisis kebutuhan, analisis peserta didik, analisis kurikulum, analisis konsep, serta analisis bahan ajar yang ada. Berdasarkan hasil analisis pendahuluan (Preliminary Research) maka diperoleh kesimpulan bahwa untuk dapat mengasah kemampuan pemecahan masalah matematis peserta didik, guru membutuhkan perangkat pembelajaran yang dapat membantu memfasilitasi peserta didik untuk menumbuh dan mengembangkan kemampuan pemecahan masalah matematisnya. Melalui LKPD yang dilandaskan atau didasarkan atas salah satu strategi atau pendekatan yang telah terbukti untuk meningkatkan kemampuan pemecahan masalah yaitu Problem Based Learning, maka diharapkan dapat membantu peserta didik mengembangkan kemampuan pemecahan masalahnya.

AbstractThis research aimed to determine the effect of using chemical novel in learning activities to the understanding of concept and learning motivation in class X SMA Muhammadiyah 3 Yogyakarta of the school year 2012-2013. The research design is non equivalent control group design. Data is collected using pretest and post-test booklet and sheet scale learning motivation to the using chemical novel. The results of the data analysis in this research is on the motivation of learners average experimental and control classes, respectively 72.79 and 69.43. The results showed that the average experimental class on learning motivation is greater than the average grade control. The average is categorized according to both Sukardjo which is between 67.998 and 83.994. In aspect of understanding the concept, for posttest data is normally distributed with sig-class experimental and control respectively were 0.08 and 0.35. In homogeneity test data is homogeneous with sig 0.322. The average value of each class posttests were 70.44 and 65.33. Furthermore, using one way ANOVA that shows the value of Farithmetic>Ftable is 4.787> 3.995. This means chemical novel as learning resource on hydrocarbons gives a positive influence on chemistry learning activities.Keywords: Chemical novel, learning motivation, understanding of concept

Kemasan vakum dan pengaruhnya terhadap pertumbuhan mikroba pada “sale pisang”

Tujuan penelitian ini adalah untuk merancang mesin giling ikan yang sesuai dengan desain ergonomicn, menghasilkan mesin penggiling ikan yang mempunyai produktivitas dengan rancangan kekuatan material alat dan mesin motor serta menghitung kapasitas produksi, BEP dan total biaya hasil prodiksi. Penelitian ini menggunakan metode kuantitatif dengan perancangan ergonomic. Hasil penelitian ini adalah Perhitungan anthropometri dapat ditentukan fasilitas kerja operator dengan dimensi kursi dengan tinggi 44 cm dan meja dengan tinggi 67 cm, lebar 63 cm, panjang 130 cm yang digunakan operator pada proses penggilingan ikan yang dirancang. Penentuan kualitas motor dapat ditentukan dengan daya motor sebesar 2,83 Kw atau 3 Hp, diameter puli sebesar 20 cm, sabuk pertama 61 inch, sabuk 2 sebesar 68 inch, dengan bahan poros ST 42, tegangan tarik 420 N/mm2, bahan elektroda AWS 60xx, Kekuatan tarik elektroda sebesar 427,21 N/mm2, Tebal Pengelasan sebesar 3 mm, lebar pengelasan 40 mm dan factor keamanan sebesar N=3. Rancangan alat pengiling ikan dapat memproduksi sebanyak 39.600 gram atau lebih maka sudah berada pada titik impas (BEP) atau sudah mendapat keuntungan. Biaya total yang dibutuhkan untuk membuat 39.600 gram Rp 365.522,-

This research talks about existence found in ‘By the River Piedra I Sat Down and Wept’ novel by Paulo Coelho. This research focuses on Pilar as one of the main characters in the novel. The aim of this research is to describe Pilar’s characteristics and Pilar’s life to get her existence through her love story in the novel. It is a descriptive study. It is a library based study that collects data from the novel. The result of this research shows that Pilar as one of the main characters in the novel is a dynamic character. Pilar is initially described as lacking self-confidence and fearful woman and she finally becomes a self-confident and brave woman. Besides that, love story of Pilar’s life brings Pilar to some stages of existence that is aesthetic stage, ethic stage and religious stage as the peak of stage in life.

Penelitian ini bertujuan untuk mengetahui bentuk afirmatif kebijakan pemerintah dalam fasilitasi kerja bagi penyandang disabilitas di Provinsi Jawa Tengah, persepsi penyandang disabilitas terhadap afirmatif kebijakan pemerintah, dan mengetahui kendala yang dihadapi dalam pelaksanaan afirmatif kebijakan pemerintah tersebut. Jenis penelitian ini adalah yuridis sosiologis dengan menggunakan pendekatan deskriptif. Hasil penelitian menunjukan bahwa kuota minimal hak kerja bagi penyandang disabilitas tidak terpenuhi. Namun pemerintah masih berupaya untuk mewujudkan hal tersebut. Upaya ini diwujudkan melalui afirmatif kebijakan pemerintah dalam fasilitasi kerja bagi penyandang disabilitas, yaitu dengan memberikan pelatihan keterampilan, bantuan sosial bagi penyandang disabilitas dan pembentukan Peraturan Daerah Provinsi Jawa Tengah Tentang Pemenuhan Hak Penyandang Disabilitas yang sejauh ini masih dalam tahap Rancangan Peraturan Daerah (Raperda). Persatuan Penyandang Cacat Indonesia menilai bahwa pelatihan yang diberikan pemerintah dirasa sudah tidak sesuai lagi dengan perkembangan jaman dan kebutuhan hidup penyandang disabilitas. Hal serupa turut disuarakan oleh Gerkatin. Sedangkan tentang kehadiran Raperda, baik Persatuan Penyandang Cacat Indonesia maupun Gerkatin memberikan respon positif. Adapun faktor penyebab afirmatif kebijakan pemerintah yang berlaku saat ini belum dapat berjalan dengan baik dikarenakan ketidakpatuhan pihak pihak serta ketidaktahuan pihak perusahaan mengenai adanya aturan tentang kuota minimal hak kerja bagi penyandang disabilitas. The purposes of this study are to knows the form of affirmative policies of local goverment to facilitating of work to disabilities, to knows how the respons of disabilities, and to knows what the obstacles to implementation those policies. This study is using sosio - juridical with descriptive approach. The result of this study is showing that the minimum quota of disabilitiess work right is insatiable. But the local goverments keeping try to actualizing it with their affirmative policies. These affirmative policies exist to faciliting disabilities to get theirs work right. The local goverment give it by training skill of disabilities, giving social capital, and by formating the draft of local regulation about acquirement of disabilities rights. The unity of Indonesias Disabilities and The Unity of Deaf People of Indonesia give positive respons to the policies. But the policies which applicating by the local goverments is getting obtacles. The obtacles of application is causing by disobediently by the people and knowless of the people obout the regulation which regulating the minimum qouta of disabilitiess work right.

This paper discusses energy audit in operating oil and gas production facility in Indonesia by taking a case study at Field Y, East Kalimantan. Energy audit is essential to be carried out in order to identify current rate of efficiency and energy intensity in oil and gas production facility, and extrapolate the data as baseline to recommend potential room for improvement in increasing efficiency. Calculation on efficiency and energy intensity has been performed against main equipments which consumes fuel gas, namely generators and turbo compressors. Data from 2015-2017 were collected to perform the calculation. Calculation results showed that generator thermal efficiency ranges from 13.54% - 17.45%, which was affected by generator load power itself. The efficiency improves as the load power increases. Meanwhile, compressor thermal efficiency ranged from 28.36% - 33.79% depending on process variables and compressed gas volume. Energy intensity calculation result showed the value of 64.554 - 71.064 and greenhouse gas emission ranged from 160.48-208.17 kt CO2 eq. From this study, it is identified that improvements to increase efficiency and reduce energy intensity can be made through operating one generator and one compressor, and assessing the use of renewable energy resources to supply power requirement for non-process facilities on site.

This study was conducted to help English teachers in designing English listening materials in the form of audio and textbook through YouTube video editing. 18 English teachers of 10 Islamic junior high schools in Parepare were trained to write English listening materials in the form of textbook and to edit video (download, import, cut, merge, and export video) in form of audio. 150 students were observed and tested to evaluate teachers' products. Training materials consist of: (1) searching and download video through YouTube; (2) editing video that includes import, cut, merge, and export video; and (3) writing worksheet that contains phoneme discrimination and listening comprehension exercise in the form of multiple choice, true false, and completion. Training activities include: (1) explanation; (2) practice; (3) grouping; (4) assignment/design; and (5) evaluation and revision. After following training, teachers' ability was categorized into good and fair in designing English listening materials. More than 50% of teachers were categorized into good in editing video and 72% of teachers were categorized into good in writing listening exercise. Students' English listening learning outcome was categorized into good after learning by using teachers' products and students have a positive attitude in learning English listening skill.