bluuebunny/crossref_metadata_2025 huggingface dataset:
SOSIALISASI PENGELOLAAN LIMBAH RUMAH TANGGA DALAM MENCEGAH PENCEMARAN LINGKUNGAN DAN GLOBAL WARMING DI SMA NEGERI 1 NARMADA, KABUPATEN LOMBOK BARAT
Authors: Susilowati Lolita Endang , Markum Markum , Wahyuningsih Endah , Jaya Dori Kusuma , Gigentika Soraya
Published: February 2025

Pengelolaan limbah rumah tangga yang tidak tepat dapat menyebabkan pencemaran lingkungan dan berkontribusi pada global warming. Oleh karena itu, perlu adanya kegiatan pengabdian masyarakat untuk memberikan sosialisasi terhadap pengelolaan limbah rumah tangga kepada siswa SMA Negeri 1 Narmada. Tujuan dari kegiatan pengabdian kepada masyarakat tersebut adalah meningkatkan pemahaman dan kesadaran siswa SMA Negeri 1 Narmada tentang pentingnya langkah-langkah praktis dalam pengelolaan limbah rumah tangga guna mencegah pencemaran lingkungan serta memitigasi dampak global warming. Kegiatan ini dilakukan melalui sosialisasi menggunakan metode ekspositori, metode partisipatif, dan evaluasi formatif, di mana para siswa diperkenalkan dengan konsep 3R (reduce, reuse, recycle) dan gerakan zero waste. Hasil kegiatan menunjukkan adanya peningkatan pengetahuan siswa tentang jenis limbah rumah tangga dan dampak negatifnya, serta pemahaman yang lebih baik mengenai cara mengelola limbah secara efektif. Sosialisasi ini juga menghasilkan perubahan positif dalam kebiasaan siswa, seperti pemisahan limbah organik dan anorganik, penggunaan produk yang dapat didaur ulang, serta pengurangan penggunaan plastik sekali pakai. Kesimpulan dari kegiatan ini adalah sosialisasi pengelolaan limbah rumah tangga terbukti efektif dalam meningkatkan kesadaran lingkungan dan dapat menjadi langkah awal untuk menciptakan perubahan perilaku yang berkelanjutan. Saran yang diajukan adalah agar kegiatan serupa diadakan secara berkala dan diikuti oleh kolaborasi antara sekolah, komunitas, dan pemerintah untuk memperkuat upaya pengelolaan limbah dan mitigasi pemanasan global secara lebih luas dan terintegrasi.
EKSPLORASI MINAT BAKAT ANAK USIA DINI MELALUI KEGIATAN INTERAKTIF PEMROGRAMAN VISUAL MENGGUNAKAN SCRATCH-JR
Authors: Rahmawati Endra , Arianto Muhammad Firdhi , Pitaloka Diaz , Perdana Muhammad Frizzy Alfarizzy
Published: February 2025

Di Era Revolusi Industri 4.0 banyak dibutuhkan sumber daya manusia yang berkualitas dimana setidaknya memiliki kemampuan critical thinking, problem solving, dan creativity. Untuk mencapai hal tersebut, dibutuhkan pengelompokan untuk mengetahui minat dan bakat siswa usia dini yang dimulai sejak jenjang Pendidikan Taman Kanak-Kanak (TK). Eksplorasi minat dan bakat anak usia dini dapat menjadi pendekatan yang strategis untuk mengembangkan potensi siswa dalam bidang teknologi informasi. Kegiatan ini dapat menggali pengetahuan melalui kegiatan kreatif pemrograman visual menggunakan ScratchJr. ScratchJr merupakan salah satu aplikasi pemrograman visual yang dirancang untuk anak usia 5-7 tahun yang bersifat open source. Metode kegiatan ekplorasi ini dikemas dalam bentuk pelatihan dan presentasi yang dibagi menjadi tiga tahapan yaitu Tahap Persiapan, Pelaksanaan, dan Evaluasi Akhir. Pada tahap persiapan dimulai dengan survey dan observasi dengan datang langsung ke sekolah untuk mengetahui kebutuhan dan tantangan apa yang dihadapi oleh para Guru di sekolah tersebut dalam mengenalkan penggunaan pemrograman visual untuk siswa pada jenjang sekolah TK. Kemudian dilanjutkan dengan menyusun modul pelatihan yang menjadi panduan bagi peserta, terutama Guru agar dapat membantu siswanya dalam mempelajari Scratch Jr. Selain itu, terdapat instrumen evaluasi untuk mengukur pemahaman peserta saat sebelum dan setelah pelatihan berakhir, serta terdapat nilai kepuasan peserta secara keseluruhan. Hasil evaluasi akhir menunjukkan bahwa 80.4% peserta dapat menerima dan memanfaatkan aplikasi ScratchJr dalam kegiatan kreatif pemrograman visual seperti pembuatan karakter dan animasi. Penggunaan ScratchJr dalam kegiatan kolaboratif siswa juga dapat memberikan keterampilan sosial dan mengembangkan pertumbuhan holistik anak, namun tetap didampingi oleh Guru Pendamping siswa.
PERLINDUNGAN ANAK TERHADAP TINDAK PIDANA BULLYING DI SMP DESA NUMBING
Authors: Efritadewi Ayu , Haryanti Dewi , Endri  , Syahputra Irwandi , Nuraini Lia , Hidayat Muhammad Fajar , Rani Marnia , Harmain Irfan , Kaloko Ilhamda Fattah , Hanum Atiikah , Gulo Septi Puspitaria , Sari Nila Permata , Tammardhia Rodhia , Situmeang Nova , Nahusona Erick Suprianto
Published: February 2025

Perlindungan anak adalah segala usaha agar setiap anak dapat mewujudkan hak dan tanggung jawabnya terhadap tumbuh kembang anak, baik secara alamiah, jasmani, rohani, dan sosial. Dalam melaksanakan kegiatan pengabdian dengan model siklus deming yang terdiri dari empat tahapan, yakni perencaraan, melakukan, pemeriksaan dan tindak lanjut. Diagram tersebut menunjukkan hasil pemahaman siswa SMP Numbing setelah menerima pemaparan materi terkait bullying. Berdasarkan diagram tersebut, mayoritas siswa, yaitu 66%, setuju bahwa mereka mengerti bullying dapat berupa fisik, verbal, dan sosial. Sebanyak 26% siswa sangat setuju dengan pernyataan tersebut, sementara 8% sisanya menyatakan tidak setuju. Ini menunjukkan bahwa setelah menerima materi, sebagian besar siswa mengalami peningkatan pengetahuan terkait bentuk-bentuk bullying, dan menunjukkan pemahaman yang cukup baik. Pengabdian perlindungan anak terhadap tindak pidana bullying dilaksanakan agar siswa-siswa di SMP Numbing mendapatkan pengetahuan dan bimbingan terkait segala jenis bullying, sehingga mereka dapat mencegah dan meminimalisir tindakan bullying yang kerap terjadi dilingkungan sekolah. Berdasarkan hasil dari kuesioner sebelum dan sesudah pemaparan, menunjukan bahwa siswa-siswa tersebut mengalami peningkatan.
PENINGKATAN PEREKONOMIAN MASYARAKAT DESA BLIGO MAGELANG MELALUI PEMANFAATAN MIKROALGA BUBUK DALAM BUDIDAYA IKAN LELE DAN SAYURAN DALAM EMBER (BUDIKDAMBER)
Authors: Tartila Shobrina Silmi Qori , Mujtahidah Tholibah , Putri Soraya Kusuma , Risqulloh Sultan Jibran , Oktavian Muhammad Abizar Sakti , Prisdianhaq Nisa Hakimah , Khodijah Berliani Hemas Nur
Published: February 2025

Pelatihan dan pendampingan yang dilakukan dapat diarahkan ke sektor perikanan, yaitu kegiatan pembesaran ikan lele dalam lokasi lahan sempit melalui metode budidaya ikan dan sayur dalam ember (BUDIKDAMBER). Perlunya efisiensi pemanfaatan pakan untuk efektivitas pertumbuhan bobot ikan lele, selain peningkatan ketahanan ikan lele terhadap padat tebar tinggi dan lahan pemeliharaan yang sempit melalui suplementasi tepung mikroalga Arthospira platensis dan EM4 sebagai bahan aditif pada pakan ikan lele. Kelompok masyarakat potensial di Desa Bligo adalah Karang Taruna Dusun Bakalan Desa Bligo. Efektivitas pemanfaatan lahan untuk kegiatan pembesaran ikan lele oleh pemuda Karang Taruna Dusun Bakalan Desa Bligo melalui metode BUDIKDAMBER telah tercapai dengan adanya desain BUDIKDAMBER skala produksi sesuai dengan lokasi lahan yang disepakati oleh mitra sasaran dan tim pengabdian. Namun, peningkatan efisiensi kegiatan pembesaran ikan lele dengan metode BUDIKDAMBER yang memerlukan biaya operasional pengadaan pakan tinggi (60-70%) melalui suplementasi feed additive berupa mikroalga bubuk A. platensis belum tercapai, karena belum dilakukan kegiatan pembesaran ikan dengan suplementasi A. platensis dan EM4.
SERTIFIKASI HALAL DAN DESAIN KEMASAN PRODUK UNTUK MENINGKATKAN KEPERCAYAAN DAN PERMINTAAN MASYARAKAT TERHADAP SATE BANDENG
Authors: Lady Lovely , Herlina Lely , Yadi Yayan Harry
Published: February 2025

Usaha UMKM bu Eni bergerak dibidang makanan olahan yaitu sate bandeng. Sebagai upaya untuk meningkatkan penjualan maka dilakukan usaha mendapatkan sertifikat halal dan memperbaiki tampilan produk sebagai media promosi makanan oleh-oleh dengan mendesain kemasan yang menarik. Tujuan program ini adalah memberikan pendampingan kepada UMKM untuk mendapatkan sertifikat halal dan mendesain kemasan produk yang menarik. Untuk mendapatkan sertifikat halal, UMKM sate bandeng Bu Eni melakukan proses sertifikasi halal dengan metode self declare, yaitu menyatakan sendiri bahwa produknya halal, dan pelaku usaha bertanggung jawab penuh atas pernyataan kehalalan produknya dan memastikan bahwa produknya telah memenuhi semua persyaratan halal. Proses self declare dilakukan dengan pendampingan peneliti yang memiliki legitimasi sebagai Pendamping Produk Halal (PPI). Untuk memastikan kehalalan bahan baku dan proses produksi maka PPI melakukan survei dan wawancara langsung ke UMKM sate bandeng bu Eni. Hasil survey UMKM sate bandeng bu Eni sudah memenuhi persyaratan self declare pada pengajuan sertifikasi halal, meliputi: 1. Identifikasi bahan yang digunakan kehalalannya; 2. Kebersihan proses produksi dan tidak terkontaminasi oleh najis; 3. Membuat self declare oleh pelaku usaha didampingi oleh pendamping PPH. Dalam mendesain kemasan produk beberapa prinsip desain kemasan menjadi panduan termasuk memberikan informasi yang lengkap tentang bahan-bahan produk, Alamat dan no whatsapp UMKM, nama produk jelas terbaca, menggunakan konsep ecofriendly, dan desain yang menarik.
PENGEMBANGAN MOTIF ECOPRINT DAN PEMANFAATAN RANTING RHIZOPHORA MUCRONATA SEBAGAI PEWARNA ALAMI DI POKLAHSAR SUMBER REJEKI, NGULING, PASURUAN, JAWA TIMUR
Authors: Puspitasari Yunita Eka , Puspitasari Diah Agustina , Iyati Wasiska , Putra Aditya Pratama , Kamila Virda , Sumarto Tria Are , Gaol Nanda Lumban , Rahayu Agustina
Published: February 2025

Buah Rhizophora mucronata sudah dimanfaatkan oleh masyarakat Desa Penunggul untuk bahan baku keripik mangrove. Berbeda halnya dengan ranting mangrove masih jarang dimanfaatkan secara optimal. Ranting mangrove ini dapat dimanfaatkan sebagai pewarna alami ecoprint karena mengandung tanin yang menghasilkan warna coklat. Teknik ecoprint pada pembuatan pashmina ini diaplikasikan di Poklahsar Sumber Rejeki, Nguling, Pasuruan, Jawa Timur karena pembuatannya relatif mudah dan tidak memerlukan peralatan yang kompleks. Namun terdapat tantangan, dimana salah satu ciri ecoprint adalah pengaturan daun yang digunakan dalam proses ecoprint terlihat acak. Sehingga tujuan dari pengabdian masyarakat ini untuk mengembangkan motif ecoprint yang lebih terstruktur serta memanfaatkan pewarna alami dari ranting mangrove dan menambah keterampilan kelompok Poklahsar Sumber Rejeki. Metode kegiatan ini adalah focus group discussion (FGD), participant learning center (PCL), participatory action (PA). Hasil kegiatan ini menunjukkan bahwa pengembangan motif pada ecoprint memberikan dampak positif terhadap kualitas estetika produk. Kelompok Poklahsar Sumber Rejeki sangat berantusias dalam pembuatan ecoprint dengan memanfaatkan ranting mangrove sebagai pewarna alami. Ecoprint yang telah dibuat nantinya dapat dijadikan sebagai produk oleh-oleh khas Desa Wisata Mangrove Penunggul.
PROGRAM PENGEMBANGAN CURUG MUNTU SEBAGAI PENGUATAN PROGRAM EKOWISATA DI DESA KETENGER, KECAMATAN BATURRADEN, KABUPATEN BANYUMAS – PEMBERDAYAAN KEMITRAAN MASYARAKAT
Authors: Riyatno Riyatno , Wicaksono Agung , Runtiko Agus Ganjar , Huda Farhat , Abiwardhana Muhammad Fachry
Published: February 2025

Program Pengembangan Curug Muntu di Desa Ketenger, Kecamatan Baturraden, Kabupaten Banyumas bertujuan untuk memperkuat ekowisata di kawasan tersebut. Curug Muntu, yang dikenal sebagai salah satu obyek wisata alam, memiliki potensi besar untuk mendukung perekonomian lokal dan meningkatkan kesadaran akan pelestarian lingkungan. Pengembangan ini melibatkan pemberdayaan masyarakat lokal melalui kemitraan, yang diharapkan dapat memperbaiki infrastruktur, meningkatkan kapasitas pelayanan wisata, dan memberikan manfaat ekonomi langsung kepada penduduk desa. Program ini merupakan bagian dari upaya yang lebih besar untuk mengembangkan potensi wisata di Banyumas dan mempromosikan keberlanjutan ekowisata. Melalui pelatihan dan praktek  yang dilakukan selama program pengabdian masyarakat, masyarakat berhasil membuat infrastruktur yang menuju dan yang ada di Curug Muntu, meningkatkan kapasitas  pelayanan wisata dengan membuat media sosial untuk promosi Curug Muntu, dan membuka lapangan kerja bagi masyarakat sekitar. Dengan adanya media sosial Instagram, Facebook dan TikTok, keberadaan Curug Muntu mulai dikenal luas yang ditandai dengan adanya peningkatan jumlah kunjungan wisatawan.
Morphometric Characterization Study of Apis cerana Worker Bees in North Lombok Regency
Authors: Erwan Erwan , Muhsinin Muhammad , Herlambang Dany Alfian
Published: February 2025

Honeybees (Apis cerana) are one of the indigenous honeybee species of Asia. They serve a crucial function in ecosystems, mostly as pollinators. This study investigates the morphometric characteristics of Apis cerana worker bees in North Lombok Regency, focusing on two beekeeping groups: Harapan Keluarga and Tunas Muda, located in Salut village, Kayangan District North Lombok Regency. Morphometric analysis was conducted on 40 colonies, with measurements taken from eight key body traits: body length, abdomen length, femur length, tibia length, metatarsus length, forewing length, hindwing length, and body weight. Results revealed significant differences between the two locations. Tunas Muda bees exhibited larger morphometric traits with lower coefficient variations, indicating higher population uniformity. Correlation and regression analyses showed that body length, forewing length, and abdomen length strongly influence body weight, with body length having the highest correlation (r = 0.85) and determination coefficient (R2 = 0.722). The study highlights the impact of environmental factors, management practices, and nutritional conditions on bee morphology. These findings provide critical insights for enhancing beekeeping practices, supporting honeybee conservation efforts, and exploring genetic and physiological adaptations in Apis cerana. This research underscores the importance of integrating morphometric analysis into sustainable apiculture and biodiversity conservation strategies in North Lombok.
Projeto Doce Leitura: releitura, discussão, adaptação e teatro de sombra sobre o texto "Um caso de amor ou uma trajédia Matemática".
Authors: Duran Francisco
Published: February 2025

Este trabalho foi desenvolvido a partir de um projeto da Secretaria Municipal de Educação - SMED de Pelotas/RS, denominado Doce Leitura. Embasada nessa proposta foi repensado um subprojeto no intuito de utilizar de forma interdisciplinar um texto narrativo de autor anônimo
intitulado “Um caso de amor ou uma tragédia Matemática”, o qual explora através de seu reconto, um conturbado relacionamento amoroso contendo inúmeros conceitos Matemáticos em seu enredo. Nessa perspectiva, foi proposto para a turma 18A/2016 que além de se
apropriarem desses conceitos, repensassem um outro final para a história incitados pelas discussões promovidas sobre as questões de gênero que são trazidas pelo referido texto.
Palavras-chave: Matemática, Literatura, Gênero, Homofobia, Interdisciplinaridade.
Capítulo 03 - OUTROS OLHARES DE (RE)EXISTÊNCIA ANTIRRACISTA: a beleza negra
Authors: Pereira Gilmar Ribeiro , Nascimento Celina Aparecida Garcia de Souza do
Published: February 2025

Objetivamos discutir em que medida a “Beleza Negra” de jovens-discentes no IFMS/Três Lagoas, provoca mudanças de ressignificação identitárias no(a)s discentes negras/negros. Partimos do questionamento, como acontece essa relação entre a língua e a cultura afro-brasileira e africana no quesito da ressignificação? A coleta foi feita por entrevistas dialogadas com discentes negras/os que participaram e participam do projeto. Ancoramos no aporte teórico da Análise do Discurso de origem francesa, a partir de Orlandi (2001), com apoio da noção de discurso de Foucault (2014), transdisciplinarizada com os estudos decoloniais em Fanon (2009), Quijano (2005) e Mignolo (2017). Os resultados iniciais apontam que diante do enfretamento ao racismo estrutural, o concurso “Beleza Negra” pode contribuir, significativamente, para com essa tarefa.
Capítulo 06 - O JEITO SURDO DE SER (ETHOS) E INTERAGIR: em defesa da identidade linguística do surdo
Authors: Reis Fábio Soares dos
Published: February 2025

A visibilidade em relação à questão dos surdos se mostra cada vez maior nas últimas décadas, embora a presença desse público, em específico, seja tão antiga quanto à humanidade (Strobel, 2009). O ethos (Amossy, 2005) surdo - a imagem de si - é projetada, destacadamente, na contemporaneidade, quando comparada com as Idades Antiga, Média e Moderna, isso porque os surdos, ancorados em seu próprio sistema linguístico, tecem perspectivas sobre si, visto que “todo ato de tomar a palavra implica a construção de uma imagem de si”
Adult onset Still disease: A retrospective study including 65 patients in Tunisia
Authors: Frikha Olfa , Ghribi Mariam , Derbel Abir , Mekki Sahar , Snoussi Mouna , Ben Salah Raida , Frikha Feten , Marzouk Sameh , Bahloul Zouhir
Published: February 2025

Adult onset Still disease (AOSD) is a rare systemic auto inflammatory disease of unknown origin. It is characterized by its clinical and biological polymorphism. Eliminating differential diagnoses is one of the most important steps when the diagnosis of adult Still’s disease is suggested, given the absence of clinical or laboratory signs to support the diagnosis; adult Still’s disease is a so-called “diagnosis of exclusion”. We conducted a retrospective study to describe clinical and laboratory features, treatment, course, and complications of AOSD in 65 Tunisian patients and to compare them to the literature. All patients responded to Yamaguchi criteria. There were 52% women (80%) and 13 men (20%). The mean age at diagnosis were 36.5 years old (range: 16-70 years). Fever was constant, associated with an altered general condition in 27 patients (41.5%). The other signs were polyarthritis (63.8%), skin involvement (83.1%) with a typic rash in 66.3%, throat sore (33.8%), lymphadenopathy (31.3%), splenomegaly (25%), hepatic involvement (50%) and pericarditis (18.5%). The inflammatory biological syndrome was constant. Leukocytosis greater than 10,000 Elt/mm³ was described in 87.3% of cases with polynuclear neutrophil > 80% in 63.6%. Hyperserotonemia was observed in 56 patients (96.5%). Treatment was based on corticosteroids, as a first line treatment, and methotrexate as a second line treatment. In terms of disease course, 68.3% of cases evolved to the systemic form and 31.7% of them to the chronic articular form. AOSD is a relatively benign disease. It can be life-threatening due to its severe systemic damage and functionally damaging due to its destructive joint damage.
Enhancing aesthetics: Advances in electroplating for decorative applications
Authors: Ramya Y. A  , Krupanidhi Y. G
Published: February 2025

Electroplating is a widely adopted surface finishing technique used in decorative applications to enhance the aesthetic appeal, durability, and corrosion resistance of various materials, including metals and plastics. By depositing a thin layer of metal onto a substrate through an electrochemical process, electroplating enables the production of visually appealing, wear-resistant, and long-lasting decorative coatings. This paper provides a comprehensive analysis of the electroplating process, detailing the commonly used metals such as gold, silver, nickel, chromium, and copper, along with their specific applications in decorative finishes. Furthermore, the study examines critical surface preparation techniques, including cleaning, degreasing, etching, and activation, which are essential for achieving high-quality coatings. The influence of electroplating parameters, such as current density, bath composition, temperature, and deposition time, on the final finish is also explored. Additionally, advancements in electroplating technology, including eco-friendly and sustainable alternatives such as cyanide-free baths, trivalent chromium plating, and pulse electroplating techniques, are discussed. A comparative analysis is presented using tables and bar charts to evaluate the efficiency, cost-effectiveness, environmental impact, and performance of various electroplating methods. The study also highlights challenges related to waste management, regulatory compliance, and innovative solutions for reducing hazardous byproducts. By providing insights into modern electroplating advancements and sustainable practices, this paper aims to guide manufacturers and researchers toward more efficient and environmentally responsible decorative electroplating techniques.
Peningkatan Minat Belajar Dan Kemampuan Numerasi Siswa Kelas VIII Menggunakan Model Pembelajaran Teams Games Tournament
Authors: Robiyah Siti , Nugraheni Puji , Purwoko Riawan Yudi
Published: February 2025

Rendahnya kemampuan numerasi siswa masih jauh dari kriteria memuaskan dan minat belajar siswa pada pelajaran matematika masih rendah. Untuk mengatasi permasalahan dibutuhkan model pembelajaran yang sesuai dengan karakteristik siswa. Penggunaan model pembelajaran Teams Games Tournament dianggap sebagai salah satu media pembelajaran yang sesuai dengan karakteristik siswa pada pembelajaran matematika. Tujuan penelitian adalah untuk mengaplikasikan penerapan Teams Games Tournament. Jenis penelitian ini adalah penelitian tindakan kelas (PTK). Subjek dalam penelitian siswa kelas VIII.3 SMP Negeri 3 Wadaslintang dengan jumlah 25 siswa. Teknik pengumpulan data menggunakan metode observasi, tes, dan catatan lapangan. Sedangkan instrumen penelitian dalam penelitian ini berupa lembar observasi untuk mengetahui peningkatan minat belajar, tes kemampuan numerasi untuk mengukur kemampuan numerasi peserta didik. Teknik analisis data yang digunakan dalam penelitian ini terbagi menjadi dua, yaitu analisis data deskriptif kualitatif dan kuantitatif. Hasil penelitian menunjukkan bahwa terjadi peningkatan minat belajar dan kemampuan numerasi peserta didik melalui penerapan model pembelajaran Teams Games Tournament.  Peningkatan minat belajar dibuktikan dengan meningkatnya persentase setiap indikator. Dengan demikian dapat disimpulkan bahwa menggunakan model pembelajaran Teams Games Tournament dapat meningkatkan minat belajar dan kemampuan numerasi.
Analisis Kesalahan Siswa Menyelesaikan Operasi Hitung Aljabar Berdasarkan Kastolan
Authors: Irfana Lilik , Kusmaryono Imam , Ubaidah Nila
Published: February 2025

AbstrakPenelitian ini bertujuan Untuk menyelidiki jenis kesalahan yang dilakukan siswa dalam menyelesaikan soal operasi hitung bentuk aljabar berdasarkan kriteria Kastolan dan ntuk mengetahui faktor-faktor yang mempengaruhi siswa dalam menyelesaikan soal operasi hitung bentuk aljabar. Penelitian ini menggunakan pendekatan kuatitatif deskriptif. Penelitian ini berfokus untuk mengidentifikasi jenis-jenis kesalahan siswa dalam menyelesaikan soal pada materi operasi hitung bentuk aljabar berdasarkan kriteria Kastolan. Dalam tahapan Kastolan memiliki jenis kesalahan yaitu kesalahan konseptual, kesalahan procedural, dan kesalahan teknik.Metode yang digunakan dalam penelitian ini yaitu metode kualitatif deskriptif dengan teknik pengumpulan data melalui hasil tes tertulis dan wawancara. Tes tertulis diberikan kepasda siswa SMP kelas VII A5 dengan jumlah siswa 27.  Kemudian diambil 3 sampel sebagai subjek untuk melakukan wawancara. Data diidentifikasi melalui reduksi data, penyajian data dan penarikan kesimpulan.Hasil penelitian menunjukkan persentase soal nomor 1 dengan persentase kesalahan tiap soalnya sebesar 29,6%. Soal nomor 2 persentase kesalahan tiap soalnya sebesar 96,2%. Dan soal no.3 dengan persentase kesalahannnya sebesar 100%. Hasil persentase dari semua kesalahan yang diperoleh dikatakan siswa berkemampuan rendah karena banyak atau tingginya kesalahan yang dilakukan siswa dalam mengerjakan soal.Kata Kunci: Aljabar,  Identifikasi Kesalahan, Teori Kastolan Abstract Types of errors made by students in solving algebraic arithmetic operation problems based on the Kastolan criteria and to determine the factors that influence students in solving algebraic arithmetic operation problems. This study uses a descriptive quantitative approach. This study focuses on identifying the types of student errors in solving problems on algebraic arithmetic operation material based on the Kastolan criteria. In the Kastolan stage, there are types of errors, namely conceptual errors, procedural errors, and technical errors. The method is a descriptive qualitative method with data collection techniques through written test results and interviews. Written tests were given to 27 students of class VII A5 junior high school. Then 3 samples were taken as subjects to conduct interviews. Data were identified through data reduction, data presentation and drawing conclusions. The results showed that the percentage of question number 1 with a percentage of errors for each question was 29.6%. Question number 2, the percentage of errors for each question was 96.2%. And question no. 3 with a percentage of errors of 100%. The percentage results of all the errors obtained are said to be low-ability students because of the many or high errors made by students in working on the questions.Keywords: Algebraic , Error Identification, Kastolan Theory
Comparation Tidal Harmonic Based on IoT Instrument Using Admiralty Method in Tanjungpinang Waters
Authors: Alajuri M Hasbi Sidqi , Kusuma Hollanda Arief , Suhendra Tonny , Setyono Dwi Eny Djoko
Published: February 2025

Tides are the rising and falling movement of sea level caused by the gravitational force of celestial bodies such as the moon and sun on the mass of seawater on earth. The aim of this research is to compare the use of time series of harmonic constant parameters obtained from tidal data stored in the tool using the admiralty method. Research activities were carried out at the international port of Dompak Island, Tanjungpinang City, Riau Islands. This tidal data is analyzed by admiralty. This method is used to analyze harmonic constants and identify patterns and sea level levels. Based on the results obtained, the type of tide in Tanjungpinang waters is a mixed tide (single dominant) with an F value of 2.01 to 2.07. The sea level elevation values "‹"‹obtained (MSL) from each time series ranged from 75.83 cm to 76.60 cm, (MHWL) ranged from 97.17 cm to 98.24 cm. Then (MLWL) ranges from 58.77 cm to 59.39 cm. Meanwhile, (HHWL) ranges from 153.98 cm to 154.73 cm, and (LLWL) ranges from -2.77 cm to -1.96 cm. With a confidence interval of 5 percent,  is obtained. The difference in each time series seen from the data (MSL) is 7cm. Therefore, Tidal data from each time series has no significant differences.
Predicting Stock Market Trends Based on Moving Average Using LSTM Algorithm
Authors: Permana Rizki Surya , Mahyastuty Veronica Windha , Budiyanta Nova Eka , Bachri Karel Octavianus , Kartawidjaja Maria Angela
Published: February 2025

Prediction of the stock market is highly needed to assist traders in making decisions. Many methods are used by traders to predict this such as technical analysis and moving averages. Moving averages predict stock trends based on the past data of the stock. The disadvantage of using a moving average analysis is the delay in crossover signals. As a solution, a deep learning technique known as LSTM is applied to the moving average strategy in this paper. In this research, the BBCA stock dataset spanning from 2010 to 2018 was utilized. The data was segmented into two parts: 2010-2017 for training data and 2018 for testing data. The training process employed Long Short-Term Memory (LSTM) networks, with the subsequent results being combined with moving average crossover techniques. Validation results indicate that BBCA shows a relatively minimal error. BBCA's average MAPE is 1.1%, and its RMSE is 65.402, classifying it within the "Highly Accurate Forecasting" category. Various combinations of moving average crossovers were tested during model training, with the combination of SMA05 and SMA50 for BBCA yielding the highest profit potential. Stocks that exhibit a downward trend are more likely to incur substantial losses. The model can predict the reversal of trends by predicting the trading signal given by the moving averages.
Usability Study of Augmented Reality Indoor Navigation using Handheld Augmented Reality Usability Scale (HARUS)
Authors: Nendya Matahari Bhakti , Mahastama Aditya Wikan , Setiadi Bantolo
Published: February 2025

Augmented Reality (AR) indoor navigation has surfaced as an unprecedented and inventive method of aiding and directing users as they traverse intricate indoor landscapes, including campuses and structures. The efficacy of AR interior navigation system implementation is predominantly contingent upon the ease of use and adeptness of users in engaging with this technology. This study sets out to comprehensively evaluate the usability of AR indoor navigation with a primary focus on the manipulability and comprehensibility aspects of AR technology, assessing how effectively it facilitates navigation within indoor spaces. To achieve this, the Handheld Augmented Reality Usability Scale (HARUS) was used as the framework for evaluation. The research involved the creation of a marker-based AR indoor navigation application called "DutaNavAR," designed specifically for use within the Agape Building at Universitas Kristen Duta Wacana (Duta Wacana Christian University). The evaluation yielded noteworthy results, with the mean manipulability score averaging 75.19 and the mean comprehensibility score averaging 81.63. In summary, the overall average HARUS score obtained was 78.41. This score indicates a high level of user satisfaction with the interaction and overall experience of the indoor navigation application. These findings underscore the positive impact of AR technology in enhancing indoor navigation, emphasizing the usability and user-friendliness of AR solutions in complex indoor environments.
Dynamically Rigid Fractal Spacetime Manifolds Theory (DRFSMT): A Geometric Interpretation of String Theory
Authors: zhou changzheng , zhou ZIQING
Published: February 2025

Dynamically Rigid Fractal Spacetime Manifolds Theory (DRFSMT) offers a novel per?spective for understanding the structure of the universe and the laws of physics, em?phasizing their fractal nature. String theory, as a projection of high-dimensional fractalstructures, provides explanations for the properties and interactions of fundamental par?ticles. This paper establishes a mathematical model to explore the integration of frac?tal dimensions and string dynamics, analyzing its applications in spacetime structuresand the interpretation of dark matter and dark energy. We propose that DynamicallyRigid Fractal Spacetime Manifolds Theory (DRFSMT) not only provides a new geomet?ric interpretation of string theory but also potentially reveals the unification of quantummechanics and general relativity. This research direction holds promise for offering newanswers to the fundamental nature of the universe and its unified laws.
Dynamic Rigid Fractal Spacetime Manifold Theory: A New Perspective Solving the Black Hole Information Paradox
Authors: zhou changzheng , zhou ZIQING
Published: February 2025

The Dynamic Rigid Fractal Spacetime Manifold Theory introduces the recur?sive fractal characteristics of spacetime geometry to a systematic solution to theblack hole information paradox. This paper offers a multidimensional exposition,ranging from theoretical construction and mathematical modeling to experimen?tal predictions. The theory integrates fractal geometry, quantum information, andholographic principles, providing a falsifiable framework for resolving the paradoxand offering testable predictions for next-generation astronomical observations.
Most probable origin and statistical attribution of the major causes of global mean sea level anomaly and rising tides since the 20th century
Authors: Rivera Paul C.
Published: February 2025

The origin of the anomalous global sea level rise (SLR) since the last century is highly controversial and not fully understood. The observed increase of high tides and decrease of low tides in many coastal areas around the world imply that some crucial physical mechanisms that govern the rising sea levels may have been overlooked. The relative contribution of nutation, axial precession, lunar acceleration, Earth’s spin and sea surface temperature on sea level anomaly was estimated using multiple regression. A very high relative contribution of the polar migration (49.4%) on the mean sea level rise, followed by axial precession (46.7%) and a secondary contribution of lunar acceleration (3.9%) was found. Sea surface temperature and earth spin rate showed negative correlations with sea level rise. The annual changes of the polar migration, axial precession and lunar acceleration appear to be the dominant physical mechanisms behind the SLR problem. These factors are largely driven by strong earthquakes. The rising oceanic tides in the last century up to the present is largely due to North Pole migration. Apparently, the observed nutation and axial precession are caused by the increased eccentricity of the lunar orbit through changes in the lunar distance and lunar acceleration.
Yang-Mills on Fractal Manifolds with boundary (PART A)
Authors: zhou changzheng , zhou ZIQING
Published: February 2025

Fractal geometry provides a novel paradigm for describing complex systemsin modern physics. This paper, for the first time, constructs the mathematicalframework of Yang-Mills theory on fractal manifolds with boundary, overcoming theconstraint of traditional theories being limited to integer-dimensional manifolds. Byintroducing fractal differential structures, fractal chain complexes, and the fractalLaplace operator, we rigorously define the fractal Yang-Mills equation and energyfunctional. Monte Carlo numerical simulations further validate its effectivenessin fractal superconductors. This research lays the mathematical foundation for theexploration of fractal gauge field theories in quantum gravity and condensed matterphysics.Keywords: Sierpi´nski-type fractal manifold, Ahlfors regularity, Yang-Mills the?ory, string compactification, numerical validation, measure uniformity
Dynamic Rigid Fractal Spacetime Manifold Theory Mathematical Framework, Analysis, and Experiments
Authors: zhou changzheng , zhou ZIQING
Published: February 2025

The singularity problem in general relativity and the challenges of quantumgravity at the Planck scale remain unresolved. This paper proposes a unified frame?work based on the Dynamic Rigid Fractal Spacetime Manifold Theory (DRFSMT),which avoids singularities in black holes and cosmology through recursive geometricstructures and strict constraint conditions, while offering experimentally verifiablepredictions consistent with observations. The model replaces singularities with afinite fractal core through a recursive hierarchical ”spreading mechanism,” ensuringthe convergence of curvature and energy density. We derive modified Einstein fieldequations, analyze the model’s impact on quasi-normal modes (QNMs), black holeshadow shifts, and cosmic microwave background (CMB) fluctuations, and validateits high consistency with current observational data through numerical simulations.This work not only offers a solution to the singularity problem but also provides anew perspective for bridging quantum gravity and classical general relativity.
Dynamic Fractals and Observer Theory: A Multiscale Unified Framework from Philosophical and Physical Perspectives
Authors: zhou changzheng , zhou ZIQING
Published: February 2025

This paper proposes a novel theoretical framework—Dynamic Fractals and Ob?server Theory (DFOT)—aimed at reinterpreting the fundamental laws of the uni?verse from both philosophical and physical perspectives. Centered on the conceptsof dynamic fractal recursion and observer dependence, this theory challenges thetraditional assumptions of absolute universality of physical laws and the staticstructure of the universe. By introducing a multiscale unified framework, the paperelucidates the recursive, hierarchical nature of the dynamic fractal universe, the rep?resentational nature of physical laws, and the critical role of the observer in shapingthese laws. Furthermore, the theory establishes connections with general relativityand quantum mechanics, offering a novel approach to resolving their long-standingincompatibility. Using mathematical descriptions and theoretical analogies, thepaper demonstrates how dynamic fractals unify physical laws across scales and ex?plores the potential applications of the theory in cosmology, quantum gravity, andexperimental validation.
On the relationship between recognition judgments and truth judgments: Memory states moderate the recognition-based truth effect
Authors: Nadarevic Lena , Erdfelder Edgar
Published: February 2025

Repeatedly seen or heard statements are typically judged to be more likely true than statements not encountered before, a phenomenon referred to as truth effect. Similarly, statements judged to be old typically receive higher truth judgments than statements judged to be new. However, it is unclear whether and how this recognition-based truth effect depends on the latent memory states underlying observed recognition judgments. In order to investigate this question, we used a model-based approach to compare truth judgments as a function of recognition judgments ('old' versus 'new') and their underlying memory states (state of memory certainty vs. state of uncertainty). In three experiments, we observed a recognition-based truth effect and found this effect to be larger in the state of memory certainty than in the state of uncertainty. This result also replicated for subjective instead of modeled memory states. Moreover, we found effects of recognition judgments on judged truth to be stronger than effects of factual repetition in all three experiments. Taken together, our research highlights the role of episodic memory processes in the truth effect and provides a methodological tool that takes underlying memory states into account.
Pupillary responses reflect image memorability
Authors: Niimi Ryosuke
Published: February 2025

This study examined whether pupil size changes as a function of the memorability of natural scene images. In Experiment 1, the participants memorized, recognized, and passively viewed high- and low-memorability images adopted from an existing dataset. Baseline-corrected pupil sizes were larger for high-memorability images only in old trials during the recognition phase. However, after stricter control of image luminance and arousal, pupil dilation for high-memorability images was observed in all memorization, recognition, and passive view phases (Experiments 2 and 3). This effect of image memorability was further validated through item-based analyses. The pupil old/new effect and the subsequent memory effect on the pupil were replicated. The results of this research suggest that pupils are sensitive to image memorability, independent of the behavioral task required.
Imaginative Activity In The Special And General Theories Of Relativity
Authors: Snyder Douglas Michael
Published: February 2025

One of the earliest papers by the author presenting the argument on why the relativity of simultaneity in the special theory of relativity includes an imaginative, cognitive component. Since the relativity of simultaneity is the key to the results in the special theory, this imaginative, cognitive component is present in the results of the theory of special relativity. Since special relativity provides the groundwork for the general theory of relativity by providing the building blocks consisting of local Lorentz reference frames, the imaginative, cognitive component found in the relativity of simultaneity is key to understanding general relativity as well. The cognitive, logical component underlying the equivalence of accelerating reference frames and inertial reference frames experiencing a gravitational field is also key to understanding general relativity..
Reward association with mental states shapes empathy and prosocial behavior
Authors: Zhang Yi , Hackel Leor M
Published: February 2025

Valuing the welfare of others is a fundamental aspect of empathy and prosocial behavior. How do people develop this valuation? Theories of associative learning suggest people can associate social cues, such as smiles, with personal reward, thus feeling good when others thrive. Yet, people often display generalized concern for others’ welfare, regardless of the specific cues present. We propose that Pavlovian conditioning allows people to associate reward directly with others’ abstract mental states, learning that another's happiness predicts their own reward. In four online experiments with U.S. adults (N = 1500), participants’ monetary outcomes were congruently or incongruently predicted by a target’s mental states. Participants who experienced congruent learning reported more empathic feelings towards the target in novel situations. The values attached to mental states further influenced participants’ prosocial choices. These results demonstrate how associative learning of abstract mental states can give rise to generalizable empathy and influence moral behavior.
Belief Updating Deficits in Depression: A Systematic Review and Meta-Analysis
Authors: Zabag Reut , Vander Zwalmen Yannick , Kube Tobias , Hoorelbeke Kristof , Koster Ernst H. W. , Joormann Jutta
Published: February 2025

BackgroundPrior studies have found that depression is linked to alterations in belief updating, but the effect size of this association was heterogeneous and unclear. This preregistered systematic review and meta-analysis examines studies that measured depressive symptoms and alterations in belief updating, in both updating-to-positive and updating-to-negative information directions. MethodThe PsycINFO, MEDLINE, Embase, Web of Science and Cochrane Library electronic databases were searched for studies examining belief updating and depressive symptomatology, resulting in retrieval of 33 papers (N = 3431 individuals). Risk of bias was assessed using an adapted version of the Downs and Black checklist and risk for publication bias was assessed visually with funnel plots, as well as statistically with Egger’s test and Duval and Tweedie’s trim-and-fill procedure. Random effects models were used for calculating pooled effect sizes.ResultsWe found evidence for a small, significant association (r = -0.11) between depressive symptoms and deficits in updating-to-positive information, but not for updating-to-negative information. Heterogeneity in both models was low. Exploratory subgroup analyses pointed to significant differences in the updating-to-positive direction based on the paradigm used, but this was not significant in the updating-to-negative direction. There were few concerns regarding the risk of bias and no evidence suggesting publication bias. ConclusionsDepression is linked to a specific deficit in updating beliefs in response to positive, disconfirming information, whereas no association was found with updating beliefs in response to negative information.
Same Neighborhood, Same Employer? Residential Networks and Workplace Concentration Among Immigrants
Authors: Han JooHee , Hermansen Are Skeie , Madsen Aleksander Å. , Lillehagen Mats
Published: February 2025

Social networks shape both international migration flows and residential settlement decisions, yet few studies address the links between job-related residential networks and employment outcomes among immigrants and their children. Using Norwegian linked employer–employee administrative data with information on detailed neighborhood locations, we study how connections between neighbors are tied to workplace sorting and wages among workers of immigrant and native background. To assess the presence of residential networks, we compare workers’ observed exposure to neighbors at work against a simulated baseline of random workplace allocation within municipalities. Our findings show that immigrants are considerably more likely to show an excess workplace exposure to immigrant neighbors, particularly coethnics from the same country of origin, compared to natives living in the same neighborhood. However, working alongside immigrant neighbors is only modestly associated with lower wages among immigrants, suggesting that these networks facilitate employment but offer limited economic benefits. In contrast, children of immigrants exhibit a weaker reliance on neighborhood-based immigrant networks and show no significant wage disadvantage when working with immigrant-background neighbors. These findings highlight how residential networks concentrate immigrants in specific workplaces, while less reliance on local networks in the second generation suggests greater integration into the mainstream economy.
Europe's digital transition: Assessing the effectiveness of the 2030 Digital Decade Policy Programme
Authors: Torchio Giulia
Published: February 2025

This research evaluates the effectiveness of the European Union’s (EU) 2030 Digital Decade Policy Programme (DDPP), highlighting its current shortcomings and providing recommendations for improvement. The DDPP aims to enhance the EU’s global competitiveness and align digital transformation with European values, focusing on digital skills, infrastructure, business digitalisation, and public services. However, the 2023 and 2024 reports indicate that the EU is off track to meet its 2030 goals, with slow progress on all targets. Potential challenges stemming from a failure of the DDPP include a loss of technological competitiveness, a widening digital divide, skills polarisation, and the creation of new vulnerable groups. Reckoning with the critical state of the DDPP, President von der Leyen has tasked Henna Virkkunen, Executive Vice-President (EVP) for Tech, Sovereignty, Security and Democracy, with a review of the strategy to be carried out in 2026. Ahead of it, this research aims to kickstart a conversation on the need to substantially and comprehensively revisit the DDPP targets. It combines desk research with expert discussions to assess the effectiveness of the Digital Compass and reveals significant delays, funding issues, and an overall lack of coherence in the strategy.
Nepal in BIMSTEC: Contribution, Achievements and Future Directions
Authors: Sharma Pratima
Published: February 2025

This paper investigates Nepal's participation in the Bay of Bengal Initiative for Multi-Sectoral Technical and Economic Cooperation (BIMSTEC), a key regional organization. Nepal promotes regionalism by adhering to the principles established by the United Nations and actively working to address regional challenges while enhancing opportunities through cooperative initiatives. Since joining BIMSTEC in 2004, Nepal has engaged extensively in the BIMSTEC framework. This study employs qualitative descriptive and analytical methods to examine Nepal's perspective on BIMSTEC and its role in fostering regional cooperation, particularly through the lens of liberal inter-governmentalism. The information is collected from various secondary sources. A thorough analysis of these resources shows that Nepal strongly supports the BIMSTEC initiative, which is clear in its discussions on foreign policy. Nepal views BIMSTEC not as a substitute for other regional bodies, but to enhance cooperation across different sectors within the region. The successful execution of BIMSTEC agreements and collaborative initiatives is a key measure of the likelihood of attaining substantial results within the BIMSTEC region.