bluuebunny/crossref_metadata_2025 huggingface dataset:
Development of lignin-based biodegradable polymer from Agro-waste
Authors: Sharma Sameer , Moharana Swagatika , Sharma Akash , Srivastava Aasheesh
Published: January 2024

Biosourced and biodegradable polymers have garnered substantial attention for their role as sustainable and environmentally friendly alternatives to traditional synthetic polymers, finding diverse applications across various fields. The escalating global demand for food production and a surge in agricultural activities have resulted in a significant increase in agro-waste generation. In India, an agro-waste annual output ranging between 85-100 million tonnes is observed, with wheat straws contributing substantially to approximately one-third of the total agro residue [6]. Addressing the challenge of agro-waste utilisation, we present an innovative methodology for converting wheat straw into a Biodegradable polymer (acetyl ferulic acid polymer). The process involves the extraction of lignin through an acid-base neutralisation reaction, with the qualitative confirmation of lignin presence achieved through Safranin dye testing. The extracted lignin undergoes oxidation via the Nitrobenzene Oxidation (NBO) method, facilitating the conversion into Vanillin through sidechain oxidation of the complex lignin structure. The subsequent acetylation of Vanillin is carried out to obtain acetyl ferulic acid, which is then polymerised utilising zinc acetate as a catalyst. Glycerol is employed as a plasticiser, and the biodegradability of the resulting polymer is assessed within a controlled ambient decomposition environment in the laboratory. Decomposition data is subjected to modelling using Wolfram Mathematica, yielding the decomposition time. Our findings assert that the developed biodegradable polymer requires approximately 105 days to decompose, achieving a degradation rate of approximately 99.98%. This newly synthesised biopolymer is posited to exhibit compatibility with existing biodegradable polymers, thus contributing to the advancement of sustainable polymer materials.
From Chemical Drawing to Electronic Properties of Semiconducting Polymers in Bulk: A Tool for Chemical Discovery
Authors: Burke Colm , Makki Hesam , Troisi Alessandro
Published: January 2024

A QC/MD scheme is developed to calculate electronic properties of semiconducting polymers in three steps: (i) constructing the polymer force field through a unified workflow, (ii) equilibrating polymer models, and (iii) calculating electronic structure properties (e.g., density of states and localisation length) from the equilibrated models by quantum chemistry approaches. Notably, as the second step of this scheme, we introduce an alternative method to compute thermally averaged electronic properties in bulk, based on the simulation of a polymer chain in the solution of its repeat units, which is shown to reproduce the microstructure of polymer chains and their electrostatic effect (successfully tested for five benchmark polymers) ten times faster than state-of-the-art methods. In fact, this scheme offers a consistent and speedy way of estimating electronic properties of polymers from their chemical drawings- thus, ensuring the availability of homogenous set of simulations to derive structure-property relationships and material design principles. As an example, we show how the electrostatic effect of polymer chain environment can disturb the localized electronic states at the band tails and how this effect is more significant in case of diketopyrrolopyrrole polymers as compared to indacenodithiophene and dithiopheneindenofluorene ones.
The Effects of Interest Rate Increases on Consumers' Inflation Expectations: The Roles of Informedness and Compliance
Authors: Knotek Edward S. , Mitchell James , Pedemonte Mathieu O. , Shiroff Taylor
Published: January 2024

We study how monetary policy communications associated with increasing the federal funds rate causally affect consumers' inflation expectations. In a large-scale, multi-wave randomized controlled trial (RCT), we find weak evidence on average that communicating policy changes lowers consumers' medium-term inflation expectations. However, information differs systematically across demographic groups, in terms of ex ante informedness about monetary policy and ex post compliance with the information treatment. Monetary policy communications have a much stronger effect on people who had not previously heard news about monetary policy and who take sufficient time to read the treatment, implying scope to increase the impact of communications by targeting specific groups of the general public. Our findings show that, in an inflationary environment, consumers expect that raising interest rates will lower inflation. More generally, our results emphasize the importance of measuring both respondents' information sets and their compliance with treatment when using RCTs in empirical macroeconomics, to better understand the well-documented evidence of heterogeneous treatment effects.
Aktivitas Larvasida Ekstrak N-Heksan Rimpang Kencur Terhadap Larva Aedes aegypti
Authors: Dewi Anisa Candra , Anwar Risyandi , Sayono
Published: January 2024

Latar Belakang: Demam Berdarah Dengue (DBD) ditularkan melalui gigitan nyamuk Aedes, baik Ae. aegypti maupun Ae. albopictus. Obat antivirus belum ada dan vaksin belum efektif maka penanggulangan DBD mengandalkan pemberantasan vektor. Masyarakat lebih memilih metoda kimia yang berakibat terjadinya resistensi dalam jangka panjang. Masyarakat daerah endemis lebih memilih metode kimia termasuk larvasida temepos sehingga dalam jangka panjang timbul resistensi, dan perlu bahan aktif pengganti yang lebih aman. Penelitian ini bertujuan untuk menguji efektivitas ekstrak n-Heksan rimpang kencur (kaemferia galanga Linn.) terhadap kematian larva Ae. aegypti dan menentukan konsentrasi ekstrak yang efektif. Metode: Ekperiment ini menguji coba 5 tingkatan pada konsentrasi 30, 40, 50, 60, dan 70 ppm ekstrak N-heksan kencur terhadap larva Ae. aegypti instar III yang susceptible temepos. Setiap konsentrasi direplikasi 5 kali dan tiap replikat dipaparkan terhadap 20 ekor larva selama 24 jam. Mortalitas larva ditentukan setelah 24 jam paparan dan sekaligus penghitungan konsentrasi efektif (LC50 dan LC90) dengan analisis probit. Hasil: Mortalitas terendah dan tertinggi masing-masing pada konsentrasi 30 dan 70 ppm, di mana kematian larva seiring peningkatan konsentrasi. LC50 dan LC90 pada pengaamatan 24 jam adalah 55.444 dan 62.099 ppm. Kesimpulan: Ekstrak N-heksan rimpang kencur memiliki aktivitas larvasida yang tinggi dimana konsentrasi 70 ppm setara dengan temephos 0,02ppm.
Efek Ekstrak Etanol Daun Kesum Terhadap Penurunan Kadar Malondialdehid Lambung Tikus Putih Terinduksi Monosodium Glutamate
Authors: Ubaidah Shofura Salma , Mukaromah Ana Hidayati
Published: January 2024

Latar Belakang: Monosodium glutamat (MSG) adalah bahan tambahan pangan yang digunakan sebagai penyedap makanan. Penggunaan MSG secara berlebihan dapat meningkatkan Reactive Oxygen Species yang berdampak pada kerusakan organ lambung ditandai dengan peningkatan kadar malondialdehid (MDA). Daun kesum mengandung antioksidan yang dapat menurunkan kadar MDA. Tujuan penelitian untuk mengetahui efek ekstrak etanol daun kesum (Polygonum minus Huds.) terhadap penurunan kadar malondialdehid pada organ lambung tikus putih yang diinduksi MSG. Metode: Eksperimen dengan post-test control group design. Penelitian ini menggunakan 25 ekor tikus wistar Jantan dibagi 5 kelompok, dengan cadangan 2 ekor tikus setiap kelompok. Penelitian menggunakan kelompok Kontrol (-) tanpa perlakuan, Kontrol (+), P1, P2 dan P3 diinduksi MSG 35 mg/Kg BB selama 14 hari dan P1, P2 dan P3 diberikan ekstrak etanol daun kesum selama 7 hari dengan dosis berturut-turut 27,5; 55.0; 110,0 mg/200g BB tikus/hari. Setelah itu dibedah dan diambil organ lambung untuk pemeriksaan kadar MDA menggunakan metode spektrofotometri. Data dianalisis menggunakan One Way ANOVA dan uji Post Hoc Tukey. Hasil: Kadar MDA tikus yang terinduksi MSG adalah 6,8734±0,0509 mg/kg. Kadar MDA lambung tikus terinduksi MSG dengan pemberian kstrak etanol daun kesum selama 7 hari dengan dosis berturut-turut 27,5; 55.0; 110,0 mg/200g BB tikus/hari berturut-turut 0,5081±0,1210; 0,739±0,0400; 0,2314±0,0035 mg/kg. Kadar ekstrak etanol daun kesum yang dapat menurunkan kadar MDA paling tinggi 72,36% adalah konsentrasi 110,0 mg/200gBBTikus. Hasil uji Post Hoc Tukey menunjukkan bahwa K(+) berbeda dengan P1 (p=0,007), P2 (p=0,000), dan P3(p=0,000). Ada pengaruh variasi konsentrasi ekstrak etanol daun kesum terhadap penurunan kadar MDA.Kesimpulan: Ekstrak etanol daun kesum (Polygonum minus Huds.) dapat menurunkan kadar malondialdehid pada organ lambung tikus putih yang diinduksi MSG.
Efektivitas Edukasi pada Wanita Usia Subur Mengenai Imunisasi Tetanus Difteri di Wilayah Kerja Puskesmas Bandarharjo Semarang
Authors: Sari Astin Prima , Aini Gita Nurtaningtyas , Tahitoe Andre Damardana , Kamila Nurkholifah Natasya
Published: January 2024

Latar Belakang : Berdasarkan data wilayah kerja Puskesmas Bandarharjo, 3 dari 4 ibu hamil belum mendapatkan imunisasi dan belum mengetahui pentingnya imunisasi Tetanus Difteri (TD). Imunisasi TD merupakan upaya dalam peningkatan kesehatan ibu dengan program Eliminasi Tetanus Maternal dan Neonatal. Pengabdian ini bertujuan untuk meningkatkan pengetahuan wanita usia subur mengenai pentingnya imunisasi TD pada wanita usia subur melalui video edukasi di wilayah kerja Puskesmas Bandarharjo. Metode: Pengabdian berupa intervensi pemberian edukasi ini dilaksanakan pada bulan Mei 2023 di wilayah kerja Puskesmas Bandarharjo menggunakan video edukasi. Analisis data untuk menilai keberhasilan edukasi menggunakan rancangan One group pre test-post test design untuk melihat perbedaan pengetahuan sebelum dan sesudah penyuluhan. Jumlah responden pada pengabdian ini adalah 16 orang. Hasil: Rerata pada variabel pengetahuan responden sebelum dilakukan penyuluhan media video sebesar 6,56 dengan simpang baku 1,209, rerata pada variabel pengetahuan sesudah penyuluhan sebesar 10,31 dengan simpang baku 1,138. Hasil uji statistic menggunakan uji Wilcoxon didapatkan nilai p value yaitu 0,000 (p<0.05) yang artinya bahwa ada perbedaan yang signifikan pada pengetahuan masyarakat tentang imunisasi TD sebelum dan sesudah penyuluhan dengan metode video Kesimpulan: Edukasi mengenai pentingnya imunisasi TD telah berhasil meningkatkan pengetahuan Ibu dalam upaya untuk meningkatkan taraf kesehatan maternal dan neonatal.
Faktor Kejadian Tuberkulosis Paru Pada Anak Usia 5-14 Tahun
Authors: Wahidah Latifatul , Wardani Ratih Sari , Meikawati Wulandari
Published: January 2024

Latar belakang: Kasus tuberkulosis paru anak di Kota Semarang mengalami peningkatan setiap tahunnya. Metode:  Jenis penelitian yang digunakan adalah observasional analitik dengan rancangan kasus kontrol (case control). Populasi kasus berjumlah 19 penderita TB paru anak usia 5-14 tahun yang tercatat dalam rekam medik Puskesmas Tlogosari Kulon dan untuk Populasi kontrol 19 yang diambil anak usia 5-14 tahun di wilayah kerja Puskesmas Tlogosari Kulon yang telah dinyatakan negatif TB di BKPM wilayah semarang. Instrumen mengunakan kuisioner. Data yang dikumpulkan akan dianalisis deskriptif secara univariat dengan distribusi frekuensi dan analisis bivariat menggunakan chi square. Hasil: (1) Sebagian besar responden yang terdapat kontak tuberkulosis paru langsung sebanyak 15 responden (39,5%); (2) Mayoritas responden terdapat tanda Scar sebanyak 30 responden (93,8%); (3) Mayoritas reponden terdapat paparan rokok sebanyak 34 responden (89,5%); (4) Sebagian besar responden memiliki pendapatan kurang dari UMR sebanyak 32 responden (84,2%); dan (5) Sebagian besar responden memiliki perilaku pencegahan kurang baik sebanyak 20 responden (52,6%). Kesimpulan: Faktor penyebab tuberkulosis paru pada anak diantaranya faktor predisposisi meliputi status gizi, riwayat pemberian vaksin BCG, pengetahuan, faktor pendukung meliputi sosial ekonomi, lingkungan rumah, fasilitas dan sarana kesehatan, faktor pendorong meliputi sikap, praktik, kebiasaan merokok, konsumsi alkohol, umur, jenis kelamin, kontak langsung
Faktor – Faktor Yang Berhubungan Dengan Kejadian Fertilitas pada Pasangan Usia Subur
Authors: Riyani Agustina Dwi , Damayanti Fitriani Nur , Purwanti Indri Astuti
Published: January 2024

Latar Belakang : Fertilitas meningkatdipengaruhi oleh tingginya jumlah pasangan usia subur, angka pasangan usia subur di Kota Rembang pada tanggal 10 februari tahun 2017 di Kecamatan Sarang yaitu 11.357 dengan dengan usia pertama kali menikah berdasarkan kriteria umur dibawah 21 tahun menduduki tingkat tertinggi sebesar 81,02%. Tujuan : Mengetahui hubungan antara usia pertama kali menikah, frekuensi hubungan seksual, dan penggunaan jenis kontrasepsi dengan kejadian fertilitas di Kecamatan Sarang Kabupaten Rembang. Metode : Penelitian ini merupakan obsevasional analitik dengan pendekatan cross sectional, Variabel bebas : Usia Pertama Kali Menikah, Frekuensi Hubungan Seksual dan Penggunaan Jenis Kontrasepsi. Variabel terikat : Kejadian Fertilitas. Sampel sebesar 100 responden dengan teknik random sampling . Hasil : Dari hasil penelitian menunjukan usia pertama kali menikah kategori umur16 tahun atau lebih sebanyak 98 responden, frekuensi hubungan seksual kategori tidak ideal sebanyak 56 responden dan penggunaan jenis kontrasepsi kategori sebanyak 77 responden. Dari hasil perhitungan menggunakan Chi-Square menyatakan bahwa diduga mempunyai hubungan dengan kejadian fertilitas di Kecamatan Sarang Kabupaten Rembang, hanya ada satu variabel yang terbukti mempunyai hubungan yaitu frekuensi hubungan seksual (p-value 0,007). Kesimpulan : Ada hubungan antara frekuensi hubungan seksual. Tidak ada hubungan usia pertama kali menikah, penggunaan jenis kontrasepsi dengan kejadian fertilitas.
PENINGKATAN KEMAMPUAN MENGANALISIS ANTOLOGI PUISI MENGGUNAKAN MODEL VISUALIZATION AUDITORY KINESTETIC SISWA KELAS X SMK MUDITA SINGKAWANG
Authors: Zulfahita Zulfahita , Hairunnisa Hairunnisa
Published: January 2024

Penelitian ini didasari oleh rendahnya nilai ketuntasan siswa dalam pembelajaran menyimak. Hal tersebut dikarenakan siswa kurang berkonsentrasi dalam pembelajaran menyimak serta kurangnya minat belajar siswa dalam mengikuti pembelajaran sehingga siswa kesulitan untuk mencapai tujuan menyimak. Selanjutnya materi ini difokuskan pada materi menyimak puisi melalui model pembelajaran Visualization Auditory Kinestetic. Metode yang digunakan dalam penelitian ini adalah deskriptif dengan bentuk kualitatif. Penelitian ini dilaksanakan dalam 2 siklus. Setiap siklus dilaksanakan dalam 1 kali pertemuan. Perencanaan pembelajaran siklus I meliputi merumuskan tujuan pembelajaran, menentukan model pembelajaran, memilih materi, menyusun rencana pelaksanaan pembelajaran, dan pedoman penilaian. Pada siklus II, perencanaan yang dilakukan sebagian besar sama dengan siklus I. Hasil perencanaan siklus I sebesar 73,21% dan siklus II sebesar 98,21%. Hasil pelaksanaan siklus I sebesar 76,47% dan siklus II sebesar 94,11%. Nilai pengamatan sikap spritual siswa siklus I sebesar 75,46% dan siklus II 90,04%. Nilai sikap sosial siswa siklus I sebesar 70,23% dan siklus II sebesar 89,38%. Berdasarkan nilai hasil siswa dalam menganalisis antologi puisi diperoleh persentase ketuntasan siswa pada siklus I sebesar 72,22% dan siklus II meningkat menjadi 88,89%. Berdasarkan penelitian ini disarankan agar guru dapat menggunakan model pembelajaran Visualization Auditory Kinestetic untuk meningkatkan kemampuan siswa dalam menganalisis antologi puisi.
ANALISIS KESULITAN SISWA DALAM MENYELESAIKAN SOAL KEMAMPUAN PEMAHAMAN KONSEP MATEMATIKA MATERI HIMPUNAN
Authors: Buyung Buyung
Published: January 2024

Fokus dalam penelitian ini adalah untuk menganalisis kesulitan siswa dalam menyelesaikan soal matematika materi himpunan pada kemampuan pemahaman konsep. Tujuan penelitian ini dilakukan adalah untuk melihat bagaimana kesulitan siswa dalam menyelesaikan soal yang berkaitan dengan kemampuan pemahaman konsep pada materi himpunan. Adapun metode penelitian yang digunakan dalam penelitian ini adalah jenis penelitian kualitatif atau deskriptif. Kualitatif adalah suatu metode yang difokuskan pada pengamatan secara mendalam sehingga menghasilkan kajian atas suatu fenomena yang lebih luas dan teliti. Selain itu instrument penelitian yang digunakan adalah berupa soal tes kemampuan pemahaman konsep. Berdasarkan hasil penelitian dapat disimpulkan bahwa kemampuan pemahaman konsep pada materi himpunan sudah dapat dikatakan baik terutama dalam menyelesaikan soal yang menyatakan ulang konsep. Selebihnya juga sudah cukup baik untuk ketiga indikator, hanya ada beberapa siswa yang mengalami kesulitan dalam memahami permasalahan disoal dan kurang ketelitian dalam pengerjaannya disebabkan kurang pemahaman pada konsep.
INTRODUCTION LEARNING VIDEO DEVELOPMENT MICROSOFT WORD FOR ELEMENTARY SCHOOL STUDENTS
Authors: NOVI NOVIANA ANA
Published: January 2024

This study aims to (1) produce a learning video product for the introduction of microsoft word ; and (2) describe the effectiveness of the introduction of microsoft word learning videos for elementary school students. This development research uses the ADDIE design model with five steps, namely: (1) Analysis, (2) Design, (3) Development, (4) Implementation, and (5) Evaluation. The design in this study was validated by two instrument validators, two design validators, two media validators and two material validators with the overall product validation results showing very good results. The research data was obtained from the questionnaire instrument and the value of students' knowledge. This study involved 27 third grade students of SD Marie Joseph Pontianak with the results on the one-on-one test, small group test and overall field test which could be interpreted very well. The results of the one-on-one trial obtained an overall average of 3.31 (good), the results of the small group trial obtained an overall average of 3.15 (good), the results of the large group trial obtained an overall average of 3.08 (good ). The results of the test of the effectiveness of the microsoft word introduction learning video product for elementary school students, the results were obtained from the pretest and posttest data that had been collected. It is known that the average pretest score is 72.5 with 11 students achieving the KKM and 9 students not achieving the KKM. Then the average posttest score was 85 with the number of students who reached the KKM there were 17 people and those who did not reach the KKM were 3 people. Through these results it can also be concluded if there is an increase in the average value of 12.5. These data indicate that there is a significant completeness.
PENGEMBANGAN VIDEO NARATIF UNTUK KEMAMPUAN BERCERITA PADA SISWA TAMAN KANAK-KANAK
Authors: Hayati Umi , Astuti Indri , Aunurrahman Aunurrahman
Published: January 2024

Tujuan penelitian ini adalah untuk mengembangkan video naratif untuk kemampuan bercerita pada siswa taman kanak-kanak. Untuk mencapai tujuan penelitian tersebut digunakan metode Research and Development (R&D) model pengembangan ADDIE. Dengan model pengembangan ADDIE maka penelitian dilakukan melalui tahap-tahap (1) Analyze, (2) Design, (3) Develop, (4) Implement, dan (5) Evaluate. Penelitian ini di TKIT Permata Hati kelompok B dengan partisipan 25 orang siswa. Produk yang dikembangkan sudah di validasi secara materi, desain dan media oleh 6 orang validator ahli di bidangnya. Hasil validasi materi secara keseluruhan memperoleh hasil “sangat valid”, validasi media memperoleh hasil “sangat valid” dan validasi desain juga memperoleh hasil “sangat valid”. Hasil pengujian di lapangan melalui uji satu-satu, uji kelompok kecil dan uji kelompok besar secara keseluruhan memperoleh hasil “Berkembang Sesuai harapan”. Hasil uji efektivitas yang dilakukan memperoleh rata-rata penilaian memahami bahasa reseptif menyimak dan membaca, memahami bahasa ekspresif (mengungkapkan), bahasa secara verbal dan nonverbal, mengenal keaksaraan awal sebelum menggunakan produk sebesar 30 sedangkan hasil pengukuran rata-rata sesudah menggunakan produk sebesar 91. Dengan dk (derajat kebebasan) 48 dan taraf kesalahan yang digunakan 5% (0,05) diperoleh 𝑡𝑡𝑎𝑏𝑒𝑙 = 2,010. Diketahui 𝑡𝑜 = -16,11 atau 16,11 dan 𝑡𝑡𝑎𝑏𝑒𝑙 = 2,010, maka 𝑡𝑜 > 𝑡𝑡𝑎𝑏𝑒𝑙.  Dengan ketentuan bilamana 𝑡𝑜 ≥ 𝑡𝑡𝑎𝑏𝑒𝑙 maka 𝐻0 ditolak artinya terdapat perbedaan signifikan dari hasil belajar siswa sebelum dan sesudah penggunaan video naratif tentang proses terjadinya kupu-kupu.
ANALISIS RESPON MAHASISWA TERHADAP PEMBELAJARAN DARING MATA KULIAH PRAKTIK PERPAJAKAN (STUDI KASUS PADA PRODI AKUNTANSI UNIVERSITAS NAHDLATUL ULAMA SIDOARJO)
Authors: Wicaksono Achmad
Published: January 2024

Riset ini disusun dengan fokus pada pembelajaran daring yang berlangsung pada mata kuliah praktik perpajakan di Universitas Nahdlatul Ulama Sidoarjo. Tujuan riset  adalah untuk mengetahui respon mahasiswa terhadap pelaksanaan pembelajaran daring mata kuliah praktik perpajakan. Riset disusun menggunakan metode deskriptif kuantitatif. Data diperoleh dengan cara menyebarkan angket kuesioner secara online melalui google form. Hasil riset menunjukkan jika mayoritas mahasiswa prodi akuntansi merasa pembelajaran daring pada mata kuliah praktik perpajakan tidak berlangsung secara efektif dan efisien meskipun kebutuhan akan keilmuan mata kuliah yang ditempuh telah terpenuhi. Hal ini terjadi sebagai akibat dari kelemahan yang muncul pada sistem pembelajaran secara daring. 
EKSPLORASI ETNOMATEMATIKA DALAM TRADISI PERNIKAHAN ADAT DAYAK KEBAHAN DI KECAMATAN BELIMBING KABUPATEN MELAWI
Authors: Cantika Agustina Rezha , T Ahmad Yani , Munaldus Munaldus
Published: January 2024

There is a relationship between cultural activities and education; this education applies to all subjects, one of which is mathematics. The relationship between mathematics and culture is called ethnomathematics. One of the cultural activities that has a relationship with mathematics is the traditional wedding tradition. Traditional wedding traditions are often carried out every year, and many people are interested in attending and witnessing the traditional wedding tradition taking place. Unbeknownst to the public, they have witnessed some mathematical activity. Many people still think that mathematics is something foreign and difficult, even though they just don't realize that so far every activity they have done has mathematics in it. In order to raise awareness of the role of mathematics in everyday life, a study of ethnomathematical activities and mathematical ideas embedded in the Dayak Kebahan traditional wedding ritual has been conducted. This study employed an ethnographic approach and a qualitative research methodology. by observing and interviewing two people as research subjects to get research results that are in accordance with the existing problem formulation. The results of the research show that there are ethnomathematical activities and mathematical concepts in the traditional Dayak Kebahan wedding tradition.
ANALISIS KEMAMPUAN KOMPUTASIONAL MAHASISWA DALAM KEGIATAN PEMBELAJARAN TRIGONOMETRI
Authors: Dian Mariani , Sari Ana Easti Rahayu Maya , Ariyanti Gregoria
Published: January 2024

Pembelajaran matematika seharusnya berfokus pada proses penyelesaian masalah yang dilakukan oleh siswa. Kemampuan matematika sendiri berkembang melalui korespondensi antara pemikiran rasional dan logika. Kemampuan berpikir tingkat tinggi merupakan kombinasi dari proses berpikir komputasional dan matematika. Empat praktik esensial yang dilakukan mengidentifikasi dan mengembangkan kemampuan CT adalah abstraksi, dekomposisi, debugging dan menentukan pola. Penelitian ini merupakan penelitian kualitatif. Proses pengumpulan data dilakukan melalui observasi secara langsung, observasi lembar kerja dan latihan mandiri yang dilakukan oleh mahasiswa. Dari hasil analisis disimpulkan bahwa baik melalui observasi dan latihan mandiri, empat praktik CT terlihat pada tiap mahasiswa. Akan tetapi hanya satu mahasiswa yang melakukan keempat proses tersebut dengan optimal. Keenam mahasiswa lainnya menunjukkan hasil praktik yang masih kurang optimal, sehingga perlu diarahkan secara intens kedepannya untuk hasil yang lebih optimal. Hal ini memperlihatkan bahwa dalam kegiatan pembelajaran sebenarnya mahasiswa memiliki potensi untuk mengembangkan kemampuan berpikir komputasional, karena keempat praktik ini terlihat, walaupun sebagian besar kurang optimal. Oleh sebab itu, kedepannya perlu ada tindak lanjut, salah satunya dalam desain kegiatan pembelajaran yang mampu membuat mahasiswa terlibat dalam keempat praktik esensial pengembangan kemampuan komputasional.
IMPLEMENTATION OF PROBLEM BASED LEARNING (PBL) MODEL TO IMPROVE STUDENT'S CRITICAL THINKING ABILITY IN TWO VARIABLE LINEAR EQUATION SYSTEM MATERIALS
Authors: Wijaya Andika Kusuma , Oikawa Sayaka , Miao Miao
Published: January 2024

The aim of the research is to find out the application of the problem based learning model to students' critical thinking skills. The type of research used is quantitative. The research design used was the One Group Pretest-Posttest Design. The results of the implementation research using the problem based learning model showed that at the first meeting 75.93% had good criteria and 85.19% the second meeting had very good criteria, the results of data analysis using the t-test, obtained a t_count value of 6.60 and a t_table of 2.045 with a significant level of 5%, because (t_count > t_table) it can be said that the alternative hypothesis (Ha) is accepted and the null hypothesis (Ho) is rejected. So it can be said that the application of the problem based learning model can improve students' critical thinking skills. The calculation of the completeness of student learning outcomes after using the problem based learning model is 82.76% above the specified classical completeness of 70%. The results of the student response questionnaire calculations as a whole gave a positive response to the problem based learning model in the material of the Two Variable Linear Equation System (SPLDV) which was applied ranging from good to very good criteria.
EFEKTIVITAS PEMANFAATAN APLIKASI CANVA SEBAGAI MEDIA PEMBELAJARAN BERDASARKAN KURIKULUM MERDEKA PADA MATERI TRANSFORMASI KELAS VII
Authors: Sumarno Mahmuda , Jamiah Yulis , Fitriawan Dona , T Ahmad Yani , Hartoyo Agung
Published: January 2024

This research is motivated by the need to use technology in education so that it can support the implementation of the independent curriculum which is currently being implemented. In addition, learning mathematics in transformation material requires visualization so that students can understand the teaching material well. Therefore, we need technology-based learning media that can support students' visualization abilities. In this case, the researcher wants to know and describe the effectiveness of using the Canva application as a learning medium for geometry transformation material for class VII at SMP Negeri 13 Pontianak. This study aims to describe the effectiveness of using the Canva application as a learning medium with the following indicators of effectiveness:
1) the implementation of learning; 2) student learning outcomes; 3) student responses. This research is useful theoretically and practically for students, teachers, schools, and society. This research uses a qualitative-research where the results of the data will be analyzed descriptively. The research subjects of this study were class VII students at SMP Negeri 13 Pontianak. The object of this research is the effectiveness of using the Canva application as a learning medium based on the independent curriculum on transformation material. To obtain data, indirect observation techniques, measurement techniques and indirect communication techniques are used. The results of this study are that the use of the Canva application as a learning medium is said to be effective with indicators of good performance, indicators of learning outcomes that have passed classical completeness, and more than 70% of students have given positive responses
ANALISIS KEMAMPUAN GURU DALAM MENYUSUN KARYA TULIS ILMIAH DI PUJUNGAN KABUPATEN MALINAU KALIMANTAN UTARA
Authors: Toding Bua Agustinus , Priyana Efraim Bavo , Retnaningati Dewi
Published: January 2024

Professional teachers are required to continue to develop themselves in accordance with the times, science and technology, as well as the needs of society, including the need for quality human resources and have the capability to be able to compete in regional, national or international forums. One of the abilities that a teacher in the academic field must have is compiling scientific papers. The preparation of by teachers is closely related to their efforts to improve learning processes and outcomes as well as supporting factors in the promotion process. Therefore, this research article aims to improve the ability to write scientific papers for teachers in Pujungan, Malinau District, North Kalimantan Province. In this study the analysis of the teacher's ability to compose scientific papers was processed through an assessment of the research report documents that had been prepared. Furthermore, the data were analyzed in a quantitative descriptive manner. The research results show that 6 of the 8 aspects of ability analyzed were included in the less category with the lowest score in the aspect of "Analyzing research data comprehensively", namely with a value of 30. The other 2 aspects were included in the sufficient category, namely the aspect of "Using the Writing Format Correctly" with a value of 65 and "Good use of language" with a value of 60.
PENINGKATAN KEMAMPUAN PENALARAN MATEMATIKA DAN MINAT BELAJAR MELALUI GAME EDUKASI WORDWALL
Authors: Richardo Edo Yulio , Kholifah Siti
Published: January 2024

Kemampuan penalaran matematika SMP Torsina III Singkawang masih belum maksimal terkait dengan indicator kemampuan penalaran diperoleh bahwa siswa kesulitan untuk menarik kesimpulan logis, memberikan penjelasan terhadap model, fakta, sifat, hubungan atau pola. Tujuan penelitian untuk mengetahui peningkatan kemampuan kemampuan penalaran dan minat belajar matematika siswa yang diajarkan dengan menggunakan Game Edukasi Wordwall. desain penelitian menggunakan quasi experiment (eksperimen semu) dengan desain penelitian pre-test post-test control group design. Populasi penelitian seluruh siswa sekolah SMP Torsina III Singkawang. 16 orang kelompok eksperimen (diajar dengan menggunakan Game Edukasi Wordwall) dan 9 orang siswa sebagai kelompok kontrol (yang diajar dengan menggunakan metode pembelajaran konvensional). Hasil uji prasyarat data penelitian diperoleh bahwa data penelitian berdistribusi normal dan homogen. Teknik analisis data yang digunakan adalah N-Gain dan  uji Independent Sample T-Test. Hasil penelitian menunjukkan bahwa terdapat peningkatan kemampuan penalaran dan minat belajar matematika siswa yang diajar dengan menggunakan Game Edukasi Wordwall. Penggunaan Game Edukasi Wordwall. peningkatan kemampuan penalaran matematika sejalan dengan peningkatan minat belajar siswa. Ketika minat belajar siswa meningkat dapat menjadi faktor meningkatnya kemampuan penalaran matematika.
Rosal, María (autora) y Carretero, Mónica (ilustradora) (2023). "Los felpudos nunca mienten". Barcelona: Editorial Edebé, Colección Tucán Verde, 163 pp.
Authors: Delgado Cerrillo Bartolomé
Published: January 2024

Este libro contiene fundamentalmente una interpretación adulta del universo de los adolescentes, incluida, por supuesto, la realidad en la que viven. A lo largo de sus catorce capítulos, nos vamos familiarizando con su inopinado y extravagante narrador, con sus variopintos personajes, con su argumento tan atractivo como detectivesco, aderezado todo ello con ese toque de humor, a veces irónico, a veces burlón...
Study of the seismic activity of the Almalyk-Angren industrial zone based on lineament analysis
Authors: SİCHUGOVA Lola , FAZİLOVA Dilbarkhon
Published: January 2024

In this work, an automated lineament analysis was carried out to search for earthquake precursors for the territory of the Almalyk-Angren industrial zone in Uzbekistan. The seven events with a magnitude of about 3 were selected for analysis. The Landsat 8 satellite images were processed using the automated lineament detection method in the LEFA software. The processing steps included detecting line elements in raster images, calculating the characteristics of the spatial distribution of line elements, and combining collinear linear elements into lineaments. The analyses of the cyclicality of precursors before and after earthquakes were based on the study of the distribution of the lineament trend in the study area using rose diagrams and lineament density maps. The results showed a change in the dynamics of the lineament structure. The statistics of the number of lineaments showed that their increase begins almost 20 days before the event, reaches its maximum about 1 – 2 days before the earthquake, decreases starting from 14 days after the earthquake, and has a minimum value of 1 – 2 months. The main trends observed in the lineament map showed the dominant trend in NS, WE, NW-SE directions.
Using GIS-supported MCDA method for appropriate site selection of parking lots: The case study of the city of Tetovo, North Macedonia
Authors: JONUZİ Edmond , ALKAN Tansu , DURDURAN Süleyman Savaş , SELVİ Hüseyin Zahit
Published: January 2024

The provision of adequate parking spaces for vehicles has emerged as a prominent and challenging issue confronted by towns, cities, and municipal authorities in recent years. Addressing this problem necessitates a thorough examination of the prevailing physical conditions in existing parking areas, while simultaneously undertaking analyses to identify suitable locations for new parking areas or parking lots. This study focuses on the city of Tetovo, North Macedonia, investigating and assessing the available parking areas while analyzing potential sites in accordance with the city's needs and requirements. To facilitate decision-making, a Multi-Criteria Decision Analysis (MCDA) approach is employed to address the parking site selection analysis problem. The weightage of criteria utilized in the analysis is estimated, and potential parking solutions or site selections for new parking areas are identified through the combined application of Geographical Information System (GIS) and Analytic Hierarchy Process (AHP) techniques, identifying primary and sub-criteria, with a focus on Land Use and Transportation as the main criteria for selecting parking lots. The integration of GIS and AHP offers an effective and optimal methodology for site selection and identifying suitable parking locations. AHP method, applied to criteria, determined relative weights through expert opinions, while GIS facilitated spatial analysis for identifying suitable parking locations. The study identifies accessibility to main roads as the criterion carrying the greatest weight (0.517), while accessibility to cultural facilities holds the lowest weight (0.117). The study serves as a pivotal resource for sustainable urban management and decision-making, providing insights into future urban planning and the identification of suitable parking lot sites to foster sustainable development within the city.
Production of fuel-based carbon footprint distribution map using spatial interpolation methods based on GIS
Authors: ÇOLAK Ebru , MEMİŞOĞLU BAYKAL Tuğba , GENÇ Nihal
Published: January 2024

The Earth is a complex system where living and non-living elements coexist in a delicate balance. Climate change is the primary factor responsible for the degradation of this system over time. The far-reaching consequences of climate change impact various aspects of our lives, including the physical environment, urban settings, human activities, economy, technology, agriculture, food production, access to clean water, and public health, all of which are widely acknowledged. Human-induced greenhouse gas emissions in these areas significantly trigger global climate change. Hence, addressing and mitigating the environmental damage from these emissions and the interconnected climate change phenomena is imperative. This situation is where the concept of "carbon footprint" gains prominence in assessing the extent of this damage. Carbon footprint serves as an essential measure in managing and curbing climate change. This study focused on controlling and mitigating carbon emissions, one of the primary greenhouse gasses responsible for climate change, by implementing spatial interpolation techniques based on Geographic Information Systems (GIS). The investigation targeted the Beşirli neighborhood in the Ortahisar district of Trabzon province. Data concerning electricity and natural gas usage were acquired from relevant institutions to perform carbon footprint calculations. Subsequently, carbon footprint calculations were conducted utilizing the acquired data within the specified region. The resulting outputs were systematically organized, integrated into the GIS environment, and linked to their respective geographical locations. Eventually, region-specific carbon footprint distribution maps were generated using selected spatial interpolation methods. These maps enabled a spatial observation of points exhibiting variability in terms of carbon emissions, thereby highlighting the carbon footprints evident in the region. The ultimate goal of this endeavor is to propose practical measures for minimizing the adverse environmental impacts by suggesting strategies to reduce and prevent carbon footprints associated with carbon emissions in the relevant areas.
Diksi Dan Gaya Bahasa Janturan Wayang Kulit Purwa Lakon Parta Krama Oleh Dalang Ki Anom Suroto: Kajian Stilistika
Authors: Jati Purbo Asmoro , Sulanjari Bambang , Werdiningsih Yuli Kurniati
Published: January 2024

The goal of this research is describing the use of diction and style of language in the wayang kulit wayang kulit Purwa Lakon Parta Krama by Dalang Ki Anom Suroto using stylistic studies. The research method used is descriptive qualitative method. The data source for this research is the transcript of the song derived from the recording of the script for the YouTube video of wayang kulit purwa for the Parta Krama play by the puppeteer Ki Anom Suroto. The data used in this study are phrases, words and sentences that have a relationship with diction and style of language. Data collection techniques are listening, listening, and transcription techniques. Furthermore, the collected data were then analyzed using data reduction techniques, data display as well as drawing conclusions and verification. Based on the results of the analysis of the results of research on the use of diction and language style of wayang kulit Purwa Lakon Parta Krama by Dalang Ki Anom Suroto, it shows that there are dictions used, namely 4 tembung dwilingga data, and 8 tembung dwipurwa data which are used to emphasize words in jants puppet. Word repetition gives meaning and rhythmic pressure in the array, as well as provides sound pressure that can beautify sentences for words that contain repetition patterns. Then there are 3 garba data used in abbreviating words to provide efficiency to sentences. The style of language found in this study is 1 data style of comparative metaphor characterized by the impression of comparing one thing with another thing, there are 3 data of style of hyperbole parable, which is characterized by the impression of exaggerating something, and there is 1 data of repetition style of language Alliteration is characterized by the repetition of consonant sounds.
“DAUNTLESS” BUSANA DENGAN SUMBER IDE PAVILION CENGHUANG
Authors: Pertiwi Zhely , Budiastuti Emy
Published: January 2024

The process of creating this artwork is explored as a cultural topic, and ideas are sourced from the Chenghuang Pavilion. The inspiration for this artwork comes from the pavilion, which has a strong Chinese cultural identity. The iconic form of the pavilion and the bold colors present in it add a sense of power, representing a strong and characteristic pavilion. The process of creating this artwork involves several analyses, starting from the mood board, design, calculation, selection of materials and techniques, and design simulation. The process of creating the artwork begins with the search for ideas and concepts from a similar pavilion, which has a similar architectural style and texture to the Chenghuang Pavilion. Until a mature concept is found, the selection of ideas, design, techniques, and creation of the pavilion clothing is carried out. Thus, a suitable artwork is obtained that aligns with the purpose, reasoning, and analysis of why the product was created.
RAKET SEBAGAI SUMBER IDE PENCIPTAAN MOTIF BATIK UNTUK BUSANA CASUAL
Authors: Saputri Rezvi Alviani , Cahyana Agung
Published: January 2024

Rackets have their own unique beauty in their shape, color, material and type. A racket is a tool for hitting the ball in tennis, badminton or squash, with an oval (ovoid) netted end (made of nylon), a handle and equipped with a handle. The purpose of making this work is education, namely increasing public awareness and interest in the importance of sport and its impact on human survival. The foundation of creation in the process of making this work of art uses a creation method with 3 stages, namely the exploration stage, the design stage and the realization stage. The motif design chosen came from the idea of the racket and was applied to casual clothing by applying the written batik technique with dab coloring technique using remasol dye. The results of the creation of this work are 4 works, namely: the first work with the title Aruna, the second work with the name Nashita, the third work with the name Vikrama and the fourth work with the name Kara. which carries the theme of sports equipment in the form of rackets
Cost Accounting Education with ChatGPT and Its Implications
Authors:   Korea Accounting Information Association, Yoon Yangin
Published: January 2024

[Purpose] This study aims at providing suggestions and implications on cost accounting education under the circumstances of generative artificial intelligence language models such as ChatGPT, Bing, and Bard.
[Methodology] First, this study evaluates how well the model can provide solutions for the cost accounting exam questions. Second, this paper modifies prompts in order to get the desired answers from the AI model.
[Findings] The artificial intelligence model can solve the questions such as explaining the main concepts of cost accounting and developing managerial accounting schemes like BSC. The models also provide the correct answers for simple questions on calculating cost with a simple process. However, there are limits on multi-level cost allocation problems.
[Implications] This paper introduces examples that ChatGPT can provide answers to cost accounting questions. Based on the initial draft that ChatGPT generated, students can validate or revise their initial draft. In addition, prompt engineering activities can be introduced with cost accounting topics as illustrated in this study.
Kualitas Pupuk Organik Feses Ternak Kombinasi Limbah Buah Untuk Mendukung Pertumbuhan Rumput Gajah
Authors: Lestari Rika , Amaliah R , Juanda  , Jusri
Published: January 2024

This research was conducted to determine the nutrient content of organic fertilizers (livestock feces combined with fruit waste) and its application to elephant grass. The experiment used a completely randomized design (CRD) with 5 treatments and 4 replicates. P0 = elephant grass (control), P1 = elephant grass + (rabbit faeces and fruits waste (RFAWF) 200g/polybag, P2 = elephant grass + goat feces and (fruits waste) 200g/polybag, P3 = elephant grass + cow feces and fruits waste 200g/polybag dan P4 = elephant grass + buffalo feces and fruits waste 200g/polybag. The research results showed that nutrient content of organic fertilizer (pH, C-organic, total N, P2O5, K2O, moisture content) was in accordance with SNI for rabbit feces and cow feces. The fresh weight and dry weight of elephant grass biomass was not significantly affected by treatment. Organic fertilizers containing animal feces and fruit waste mixture effectively increases biomass production compared to control. It was concluded that the best combination of fertilizer is resulted from goat feces and mixture of fruit waste (banana peel, pineapple peel and papaya peel) is compared to other feces.             
Key words:        C/N ratio, elephant grass,  fruits waste, organic fertilizer
ECOLOGY OF HORNBILL FOOD TREES AT BUKIT BARISAN SELATAN NATIONAL PARK
Authors: Muhammad Rizqi Mukhtadin  , Nurcahyani Nuning , Zen Tresa Variyani , Septiadi Luhur , Utoyo Laji
Published: January 2024

Hornbills play an important role in maintaining tree gene flow among fragmented populations in forests. But hornbill populations in Asia have been declining mainly due to loss of forest cover and poaching. The presence of hornbills in a forest is highly dependent on environmental factors such as the condition of food trees in their habitat. The purpose of this study was to determine the spatial distribution, dispersion patterns, density, and diversity of hornbill food trees at Sukaraja Atas Resort (SA) and Balik Bukit Resort (BB) of Bukit Barisan Selatan National Park (BBSNP). We investigated a total of 10 transect (50 survey plots) for both SA and BB by collecting data on all types of hornbill food trees with a minimum diameter of 10 cm at breast height (DBH). We recorded 64 hornbill food tree species with a total of 98 individuals, which have a clumped and uniform dispersion pattern. This study showed that Lauraceae dominated in both resorts with the highest relative density. The results of the diversity index show that 9 transect have moderate diversity whereas 1 transect has low diversity; there was no significant difference between SA and BB. It can be concluded that the existing food trees in SA and BB may support the hornbill populations.
Pengaruh Pengetahuan Masyarakat Desa Cimareme terhadap Minat Menabung di Bank Syariah
Authors: Asri Sundari  , Solihin Dadin , Saepul Ma’mun  , Venny Setyowardani
Published: January 2024

ABSTRAK. Tingkat pengetahuan tentang bank syariah berpengaruh signifikan terhadap minat nasabah dalam menabung di bank syariah. Penelitian ini bertujuan mengkaji dampak pengetahuan masyarakat di Desa Cimareme terhadap kecenderungan mereka menabung di bank syariah. Pendekatan data kuantitatif, dikumpulkan melalui simple random sampling, dengan sampel 100 peserta. Hasil penelitian menunjukkan korelasi kuat, dengan skor variabel X (pengetahuan) sebesar 81,78%, dan variabel Y (minat menabung) sebesar 82,13%, menandakan hubungan yang siginifikan. Persamaan regresi, Y = 24,130 + 0,638X, pengetahuan (X = 0) menunjukkan tanpa perubahan. Selain itu, peningkatan 1% dalam pengetahuan, dengan asumsi awalnya 0, mengarah ke peningkatan 0,638 dalam minat menabung. Nilai R-Square sebesar 0,333 menunjukkan bahwa 33,3% varians dalam Y disebabkan oleh X, sedangkan 66,7% dipengaruhi oleh faktor lain. Pengujian hipotesis, membandingkan t-count (6,988) dan t-tabel (1,984) dengan nilai signifikansi 0,000 (<0,05), pengetahuan berpengaruh signifikan terhadap minat menabung di bank syariah. Oleh karena itu, hipotesis alternatif (Ha), menolak hipotesis nol (Ho), adanya hubungan antara pengetahuan dan minat menabung di bank syariah.
ABSTRACT. The level of knowledge about Islamic banks has a significant effect on customer interest in saving at Islamic banks. This study aims to examine the impact of community knowledge in Cimareme Village on their tendency to save at Islamic banks. Quantitative data approach, collected through simple random sampling, with a sample of 100 participants. The results showed a strong correlation, with a score of variable X (knowledge) of 81.78%, and variable Y (interest in saving) of 82.13%, indicating a significant relationship. The regression equation, Y = 24.130 + 0.638X, knowledge (X = 0) shows no change. In addition, a 1% increase in knowledge, assuming an initial 0, leads to a 0.638% increase in interest in saving. An R-Square value of 0.333 indicates that 33.3% of the variance in Y is due to X, while 66.7% is influenced by other factors. Hypothesis testing, comparing t-count (6.988) and t-table (1.984) with a significance value of 0.000 (<0.05), knowledge has a significant effect on interest in saving at Islamic banks. Therefore, the alternative hypothesis (Ha), rejects the null hypothesis (Ho), the relationship between knowledge and interest in saving in Islamic banks.