bluuebunny/crossref_metadata_2025 huggingface dataset:
Irradiation Time Optimization on Photocatalytic Activity of Nanoparticles MgO from Dolomite Bangkalan
Authors: Rohmawati Lydia , Fathoni Silviana Nurul , Setyarsih Woro , Putri Nugrahani Primary , Darminto Darminto
Published: March 2024

Dolomite is a type of sedimentary rock material that is often found in the Bangkalan Madura area. This dolomite has a higher MgO compound content than in the other areas, namely 40 %, but its utilization has only been as fertilizer and building materials. For this reason, this research aims to determine the characteristics of MgO nanoparticles and their application in photocatalytic with visible light irradiation. The synthesis of MgO nanoparticles used the hydrochloric acid leaching method, and the results were characterized by X-ray diffraction, Fourier transform infrared, Scanning electron microscopy, Transmission electron microscopy, Raman spectroscopy, Photoluminescence, and Ultraviolet-visible spectroscopy. The results showed that the synthesized MgO nanoparticles had a periclase phase and were shaped like a spherical cube with an average nanoparticle size of 27 nm and an energy gap of 3.9 eV. The optical properties of the MgO nanoparticles showed quite strong luminescence at a Raman shift of 1,087.36 cm−1, which was associated with the type of vibrational waves in the atomic lattice, and there were surface defects on the surface of the MgO nanoparticles, namely in the emission spectra of 720.06 and 740.39 nm originating from oxygen vacancies (F-center) and Mg vacancies (V-center). The photocatalytic activity of MgO nanoparticles in visible light showed the optimum time to degrade 30 ppm methylene blue dye in 360 min and yielded a degradation percentage of 99 %. Therefore, MgO nanoparticles could be used for processing industrial dye waste using visible light.
HIGHLIGHTS

The synthesis of MgO Nanoparticles from Bangkalan dolomite used the hydrochloric acid leaching method
The presence of nanocrystallite size, crystal defects, and oxygen vacancies in MgO nanoparticles can increase photocatalytic activity
MgO nanoparticles can degrade methylene blue dye with an optimum time of 360 minutes under visible light irradiation

GRAPHICAL ABSTRACT
Counterfeit Currency Detection
Authors: Ms. Sayali Desai  , Ms. Prachi Chavan  , Ms. Payal Badade  , Ms. Ishwari Gangurde  , Mr. Vineet Parkhe
Published: March 2024

This paper presents a programmed framework designed to identify Indian currency notes and determine whether they are genuine or counterfeit. The system is of great utility in the banking sector and other fields. India has experienced an increase in counterfeit notes of denominations such as 100, 500, and 1000 rupees, attributed to advancements in technology such as scanning, color printing, and replication. This has led to a rise in counterfeit issues. The detection of counterfeit Indian currency notes is achieved through image processing techniques. Initially, image acquisition is performed, followed by preprocessing, including cropping, smoothing, and conversion to grayscale. Subsequently, image segmentation, feature extraction, reduction, and comparison are conducted. This framework can greatly aid in distinguishing genuine and counterfeit Indian currency notes, offering a valuable tool for various sectors, particularly in addressing the rising counterfeit issues
El auge de la no ficción animada: contexto tecnocultural
Authors: Ehrlich Nea
Published: March 2024

¿Por qué es la animación una estética tan pivotal en el entorno epistémico actual y cuándo comenzaron los espectadores a aceptar la veracidad de la animación, a pesar de no parecerse en nada al fotorrealismo ni a nada que uno pudiera presenciar directamente? Este artículo explora las razones tecnoculturales del auge de la no ficción animada en los últimos 15 años. El artículo cubre la relación de la no ficción animada con las tecnologías de producción de imágenes y la manipulación de imágenes; cultura documental y de vigilancia; la era de la información y los big data; visión artificial, percepción artificial e inteligencia artificial; y finalmente, la virtualización de la cultura.
Promoting Elementary School Physical Activity
Authors: Pate Russell R. , Saunders Ruth P.
Published: March 2024

Physically active children experience healthier growth and development. They are less likely to be overweight. They learn more effectively and manage their behavior better. Yet many classroom teachers offer little or no time for physical activity because they feel pressed for time, space, and equipment.
Critical Race Studies in Physical Education
Authors: Blackshear Tara B. , Culp Brian
Published: March 2024

Racism is a sickness that permeates every aspect of Black life. But if the events of the past few years have taught us anything, it is that America has a hard time talking about issues that create disparity and inequality for Black people.
Human Resource Management in Sport and Recreation
Authors: Chelladurai Packianathan , Kim Amy Chan Hyung
Published: March 2024

The authoritative text for current and future practitioners of human resources management in the sport and recreation industries is back in a revised fourth edition. Human Resource Management in Sport and Recreation, Fourth Edition, offers a solid foundation in research and application, and it provides a holistic perspective of human resource management by bringing together the three groups of people who constitute human resources across sport and recreation organizations: paid professionals, volunteers, and the clients themselves.

Dr. Packianathan Chelladurai, a pioneer in the field of sport management, is joined by Dr. Amy Chan Hyung Kim to lend expertise gained from more than four decades of teaching human resource management. They guide students through four parts, starting with an outline of the common characteristics of the three groups of people that make up human resources. Part II focuses on individual differences among people and how those differences affect behavior within organizations. In part III, students will explore organizational processes, and part IV discusses two significant outcomes expected of human resource practices: satisfaction and commitment. The conclusion uses 10 guiding themes to bring all the concepts together with an eye toward the future of the field.

Updated to address current topics such as social issues and diversity, the fourth edition reflects the increasing complexity of human resource management across the field of recreation and sport. Modern issues and their real-world implications are represented throughout the text with recurring sidebars.

Diversity Management of Human Resources: offer insights into how and when to promote and manage diversity

Crisis Management: address the role of human resource management during emergency situations, such as the COVID-19 pandemic

Social Phenomena and Human Resource Management: assess the impact of major social events or movements

Legal Considerations in Human Resource Management: focus on legal matters in the field

From the Field: provide professional insights from leading practitioners across a variety of sport contexts

Case studies, discussion questions, and activities provide further opportunity for students to understand relevant research with real-world application of concepts.

With clear explanations of concepts and current practices in human resources across the sport and recreation industries, Human Resource Management in Sport and Recreation, Fourth Edition, is a valuable resource for future and current practitioners alike.
Sports in American History
Authors: Gems Gerald R. , Borish Linda J. , Pfister Gertrud
Published: March 2024

Sports in American History: From Colonization to Globalization, Third Edition With HKPropel Access, helps students grasp the compelling evolution of American sporting practices. This text examines sports history as a social and cultural phenomenon, generates a better understanding of current practices in sport, and considers future developments in American sport.
Achieving Excellence
Authors: Hacker Colleen M. , Mann Mallory E.
Published: March 2024

The book explains specific mental skills and concepts from elite performers in and out of sport to perform well, recover from errors, and enjoy their lives. The book is aimed at athletes and coaches of all sports and career professionals in the general workforce.
Vasoprotective Effect of Sulodexide in Diabetic Retinopathy
Authors: Dobrowolski Dariusz , Łach-Wojnarowicz Olga
Published: March 2024

Diabetes is a group of metabolic diseases, considered a lifestyle disease. Diabetic retinopathy is the leading cause of blindness in working-age adults worldwide. Pathogenetically, due to the changed anionic charge, collagen gradually replaces glycosaminoglycans (GAG) in the basement membrane of retinal capillaries, affecting vascular permeability. Clinically, these changes cause leakage from the retinal capillaries, which leads to the development of microaneurysms and, consequently, the formation of hard effusions (HE). Sulodexide is a glycosaminoglycan containing 80% of small molecular weight, fast moving heparin fraction (FMH) and 20% of dermatan sulfate. An important target of sulodexide's action are vascular endothelial cells, and its protective effect is partially related to the preservation and reconstruction of the glycocalyx structure on the surface of the endothelial layer cells. Additionally, sulodexide has been documented to strengthen the glycocalyx of retinal arterioles in people with diabetes. These findings suggest that sulodexide holds promise as a potential therapeutic agent for the treatment of diabetic retinopathy.
The Relationship of Self-Regulation and Career Planning: A Study of Senior High School Students
Authors: Abdi Sofyan , Sulistiasih Sulistiasih , Wibowo Dwi Endrasto , Cantika Ivo Imani , Violita Elsa
Published: March 2024

This research aims to determine whether there is a relationship between self-regulation and career planning among twelfth-grade students at SMAN 100 East Jakarta. This study was conducted using a quantitative approach, specifically a correlational research design. The population of this study consisted of all twelfth-grade students at SMAN 100 East Jakarta, totaling 235 students. Sample calculation using the Slovin formula resulted in a sample of 148 students using simple random sampling technique. Data collection employed psychological scales for self-efficacy, self-regulation, and career planning. Data analysis technique involved simple linear regression analysis, followed by classical assumption tests including normality test, multicollinearity test, and heteroskedasticity test. The research instruments utilized psychological scales for self-regulation and career planning. The results of the study indicate a positive and significant relationship between self-regulation and career planning, with a significant value of 0.000 and an F value of 99.409. Therefore, since the significance value is less than 0.05 and the F value is greater than the F table value (3.06), the null hypothesis (H0) is rejected, and the alternative hypothesis (H1) is accepted. Based on the coefficient of determination, the obtained R Square value of 0.578 indicates that self-regulation influences career planning by 57.8%, while the remaining 42.2% is influenced by other factors.
Loss of appetite, weakness and chronic fatigue: current approach
Authors: Hacıömeroğlu Aykut , Çifci Aydın
Published: March 2024

Fatigue and chronic fatigue are frequently encountered complaints in clinical practice, and their etiology is difficult to determine. In addition to increasing patient dissatisfaction due to the lack of clarification of the etiology, it brings about a significant increase in cost due to the fact that patients consult multiple physicians. In this review, current clinical practices, including especially overlooked points in the etiology of weakness and fatigue, investigations that should be planned, diagnosis, treatment, and lifestyle recommendations, are reviewed.
Evaluation of clinical and laboratory parameters of patients with the diagnosis of upper gastrointestinal system bleeding
Authors: Tükenmez Mehmet Akif , Tükenmez Hatice , Özgür Rahime
Published: March 2024

Aims: In this study, it was purposed to evaluate demographic, clinical, laboratory characteristics, bleeding etiologies, risk factors, comorbidity and mortality of the patients who were interned with the diagnosis of upper gastrointestinal system bleeding.
Methods: In this study, 157 patients those hospitalized to Ministry of Health Beyoğlu Public Hospitals Association
Gaziosmanpaşa Taksim Training and Research Hospital Internal Medicine Clinic with the diagnosis of upper gastrointestinal
bleeding between 1 April 2014 and 1 April 2015 were evaluated retrospectively. Age, gender, duration of hospitalization,
comorbidity, prescription story, need and amount of transfusion, endoscopic findings, hemoglobin (Hgb), blood urea nitrogen (BUN), urea, creatinine (Cr) values on admission, complication and mortality data were recorded. IBM SPSS (Statistical Package for Social Sciences) for MAC 21.0 program was used for statistical analysis in order to evaluate the data.
Results: Patient were aged between 17 and 94 .The mean age was 59.04±20.55. 95 (68.35%) of patients were male and 44 (31.65%) were female with the male/female ratio of 2.15/1. While 64.75% of the patients in our study had at least one additional disease, no additional disease was detected in 35.25%. Endoscopic procedure was peformed 89.93% of patients for both diagnosis and treatment. Exitus was seen in 7 patients and mortality was detected as 5.04%. Median age of deceased patients was 75.28±15.39. Median age of surviving patients was 58.18±20.47.
Conclusion: Our study revealed that upper GI bleeding is an important cause of mortality and morbidity despite advanced
treatment options and intensive care conditions. The most important risk factors responsible for mortality are advanced age
and the presence of comorbidities, as seen in our study.
Pengaruh Model Pembelajaran Teams Games Tournament (TGT) Berbasis Ice Breaking Terhadap Hasil Belajar Matematika Siswa Sekolah Dasar
Authors: Jannah Miftahul , Husniati Andi , Sirajuddin
Published: March 2024

Tujuan dari penelitian ini adalah untuk mengetahui bagaimana pengaruh model pembelajaran Teams Games Tournaent (TGT) berbantuan Ice Breaking terhadap hasil pembelajaran matematika bagi siswa kelas III SDN No.113 Inpres Laikang. Penelitian ini adalah penelitian eksperimen (pre-experimental design) dengan desain one-group pretest-posttest design. Populasi penelitian ini adalah kelas III SDN No.113 Inpres Laikang. Sampel dalam penelitian ini diambil dengan teknik sampel jenuh yaitu: seluruh siswa kelas III SDN No.113 Inpres Laikang yang berjumlah 16 orang. Metode pengumpulan data hasil belajar matematika menggunakan metode tes pretest dan juga posttest yang instrumen soal yang berbentuk essay serta angket yang instrumennya berbentuk pernyataan. Data hasil belajar matematika dianalisis menggunakan analisis statistik deskriptif dan inferensial (uji-t). Hasil penelitian menunjukkan bahwa terdapat peningkatan hasil belajar matematika siswa kelas III SDN No. 113 Inpres Laikang setelah  diterapkan model pembelajaran Teams Games Tournament (TGT) berbantuan Ice Breaking dengan hasil pretest diperoleh nilai rata-rata 42,13 dan pada saat posttest diperoleh nilai rata-rata74,63 berada pada kategori tinggi serta diperoleh respon siswa dengan nilai rata-rata 81,25. sedangkan analisis statistik inferensial menggunakan rumus uji t, diperoleh nilai signifikansi yang dihasilkan adalah 0,000  0,05  sehingga dapat disimpulkan bahwa nilai tersebut dapat membuktikan  ditolak dan  diterima. Berdasarkan hasil penelitian tersebut ada pengaruh penerapan model pembelajaran Teams Games Tournament (TGT) berbantuan Ice Breaking terhadap hasil belajar matematika siswa kelas III SDN No.113 Inpres Laikang.
Media Pembelajaran Domino Nusantara (Dora) Untuk Sekolah Dasar
Authors: Milenia Ayunda fitri
Published: March 2024

Pengembangan ini dilatarbelakangi terbatasnya media pembelajaran dan hasil belajar siswa yang tidak stabil. Tujuan penelitian untuk mengembangkan media Domino Nusantara (DORA) yang praktis, efektif dan valid untuk meningkatkan hasil belajar siswa sekolah dasar. Pengembangan ini menggunakan model 4D (four D) Sebelum melaksanakaan tahap uji coba dilakukan uji ahli, yaitu ahli media pembelajaran, ahli desain pembelajaran, dan ahli materi, Penelitian dilakukan di SDN Mander 1 Tambakboyo pada kelas IV. Berdasarkan hasil validasi ahli, diperoleh persentase sebagai berikut: validasi ahli materi sebesar 89,2%(sangat valid), ahli desain pembelajaran sebesar 95,5% (sangat valid), dan ahli pengembangan media 82,1% (sangat valid), respon guru sebesar 91,6% dan hasil respon siswa sebesar 91,4%, dan persentase hasil rata- rata sebesar 91,5% (sangat praktis) lembar observasi keterlaksanaan pembelajaran 92,5%(sangat efektif) dan hasil belajar siswa 88,4% siswa tuntas belajar. Berdasarkan hasil validasi kepraktisan yang diperoleh dari respon guru dan respon siswa serta dari lembar observasi keterlaksanaan pembelajaran dan hasil belajar siswa, maka dapat di simpulkan bahwasannya media pembelajaran Domino Nusantara (DORA) efektif digunakan.
Analisis Miskonsepsi Calon Guru Sekolah Dasar pada Matakuliah Konsep Dasar Matematika dengan Menggunakan Three-Tier Diagnostic Test Dilengkapi Certainty Of Response Index.
Authors: Nurwahida Nurwahida , Munir Nilam Permatasari
Published: March 2024

Penelitian ini merupakan penelitian deskriptif kuantitatif yang bertujuan untuk menganalisis miskonsepsi calon guru sekolah dasar pada mata kuliah Konsep Dasar Matematika khususnya konsep bilangan bulat dan bilangan pecahan. Subjek penelitian ini adalah seluruh mahasiswa Prodi PGMI IAIN Palopo semester 1. Sample penelitiannya yaitu 33 mahasiswa dengan menggunakan teknik purposive sampling. Pengumpulan data menggunakan teknik tes dan non tes. Tes menggunakan instrumen diagnotis three-tier diagnostic test yang dilengkapi dengan CRI (Certainty of Response Index) untuk mengidentifikasi miskonsepsi. Non tes menggunakan wawancara kepada mahasiswa untuk mengetahui alasan mengapa mahasiswa mengalami miskonsepsi. Teknik analisis data menggunakan analisis deskriptif presentase. Hasil analisis menunjukkan bahwa persentase mahasiswa yang mengalami miskonsepsi pada konsep bilangan bulat dan bilangan pecahan, 24,2% termasuk kriteria Paham Konsep Dengan Baik (PKDB), 6,1 %. termasuk kriteria Paham Konsep Tapi Tidak Yakin (PKTTY), 25,8 % termasuk kriteria Tidak Paham Konsep (TPK), dan sisanya 43,9 % mengalami miskonsepsi. Persentase miskonsepsi tertinggi terdapat pada soal tentang bilangan pecahan dalam soal cerita 57,6%. Persentase miskonsepsi terendah terdapat pada soal tentang operasi penjumlahan bilangan pecahan campuran sebesar 30,3 %. Faktor utama penyebab terjadinya miskonsepsi bersumber pada sumber belajar dan pemikiran sendiri.
Pembentukan Karakter Peserta Didik SDIT Insan Madani di era Pembelajaran Daring
Authors: Bulu' Rifa'ah Mahmudah , Sartika Sartika , Bulu' Bulu'
Published: March 2024

The pandemic period due to COVID-19 has caused changes in learning methods from offline to online to be a challenge for education providers. The impact of technological developments so that uncontrolled access has an impact on children's development, especially in character building. During this online learning period, many students' behavior became less disciplined, independent and even abandoned the Islamic etiquette that was applied in schools before the pandemic. The purpose of this study was to look at the role of teachers and parents in online learning on character education for students at SDIT Insan Madani Palopo. The research method used is qualitative research with a descriptive approach. The results showed that teachers at SDIT Insan Madani in forming honest, disciplined, religious and independent characters carried out their roles as correctors, informants, mediators, initiators and the teaching role was helped by the role of parents at home as facilitators, motivators, mentors and directors. However, there are obstacles faced in character building during online learning, namely network problems, students have not adapted well to changes in learning methods, time management from parents and different educational backgrounds from parents.

Keywords: Teacher; Parent; online; character building
Analisis Kesalahan Siswa Berdasarkan Teori Newman dalam Menyelesaikan Soal Cerita Matematika Sekolah Dasar
Authors: Hadaming Hamdana , Wahyudi Andi Ardhila
Published: March 2024

Penelitian ini dilatarbelakangi oleh rendahnya hasil belajar siswa kelas II SD Bawakaraeng pada mata pelajaran matematika, salah satunya dalam pembelajaran soal cerita matematika. Permasalahan yang muncul adalah apa saja kesalahan dan penyebab kesalahan siswa dalam menyelesaikan soal cerita matematika berdasarkan prosedur Newman SD Bawakaraeng. Tujuan penelitian ini adalah untuk mendeskripsikan kesalahan siswa dalam menyelesaikan soal cerita matematika dan mendeskripsikan penyebab kesalahan siswa dalam menyelesaikan soal cerita matematika berdasarkan prosedur Newman di SD Bawakaraeng. Prosedur analisis kesalahan siswa yang digunakan adalah prosedur newman. Jenis penelitian ini adalah penelitian kualitatif. Pengumpulan data dilakukan dengan teknik tes dan wawancara dengan subjek penelitian sejumlah 5 siswa. Teknik analisis data menggunakan analisis model Milles dan Huberman. Uji keabsahan data dilakukan dengan triangulasi teknik. Diperoleh simpulan, siswa berusaha untuk mengimplementasikan prosedur Newman saat mengerjakan soal matematika. Namun, karena kurang terbiasa, sering terjadi adanya langkah yang tidak dilakukan, yaitu pada langkah memahami masalah, transformasi dan keterampilan proses. Adapun ke-5 langkah prosedur Newman diperoleh hasil yaitu langkah 1) kesalahan memabaca, tidak ada siswa yang melakukan jenis kesalahan membaca; langkah 2) kesalahan memahami, kesalahan baru dilakukan siswa pada saat memahami masalah sebanyak 4 siswa; langkah 3) transformasi, pada kesalahan transformasi siswa yang melakukan kesalahan sebanyak 1 siswa; Langkah 4) keterampilan proses, seluruh siswa melakukan kesalahan; dan langkah 5) penulisan jawaban, sebanyak 4 siswa yang melakukan kesalahan. Terdapat 3 faktor penyebab siswa melakukan kesalahan, yakni: 1) kesulitan memahami masalah; 2) tidak memahami konsep dan operasi pembagian; 3) dan karena lupa serta tidak teliti. Solusi yang ditawarkan untuk meminimalisir kesalahan siswa dalam menyelesaikan soal cerita adalah dengan memperbanyak latihan mengerjakan soal cerita dan membuat soal cerita dengan bahasa yang lebih komunikatif.
Efektivitas Model Pembelajaran kooperatif Tipe Script dalam Pembelajaran Membaca Pemahaman Siswa Sekolah Dasar
Authors: Warda  , Sulfasyah  , Akib Tasrif
Published: March 2024

Tujuan penelitian adalah Untuk mengetahui bagaimana hasil belajar Bahasa Indonesia menggunakan Model   pembelajaran Kooperatif Tipe Script  jenis penelitian yang hanya melibatkan satu  kelas sebagai kelas eksperimen yang dilaksanakan tanpa adanya kelompok pembanding. Teknik pengumpulan data yang digunakan yaitu observasi dan tes bebentuk essay. Hasil penelitian menunjukkan bahwa penggunaan model pembelajaran kooperatif tipe script terhadap pembelajaran membaca pemahaman pada siswa positif lebih baik dari pada sebelum menggunakan model kooperatif script . hasil analisis statistik inferensial menggunakan rumus uji-t dan diketahui bahwa nilai  Thitung yang diperoleh Thitung = 26,798 dan T tabel = 2,05954 maka diperoleh Thitung  > Ttabel atau 26,798 > 2,05954. Sehingga dapat disimpulkan bahwa Ho (tidak ada pengaruh) ditolak dan H1 (Ada pengaruh) diterima. Ini membuktikan bahwa ada pengaruh penggunaan model pembelajaran kooperatif tipe script terhadap pembelajaran membaca pemahaman pada siswa kelas V UPT SPF SDN Maccini Sombala.
Pengaruh Pemanfaatan Media Audio Visual Terhadap Hasil Belajar IPS Siswa Sekolah Dasar
Authors: Syafira R Ihwal , Nawir Muhammad , Rahman Syarifah Aeni
Published: March 2024

Tujuan penelitian untuk mengetahui pengaruh pemanfaatan media audio visual terhadap hasil belajar IPS siswa kelas IV SD Negeri Alluka, Kabupaten Gowa. Jenis penelitian yang digunakan pada penelitian ini yaitu  penelitian Pre-Eksperimen Desing dan menggunakan pendekatan kuantitatif. Tempat dan waktu dalam penelitian ini di SD Negeri Alluka pada tanggal 22 Mei 2023. Subjek penelitian yang digunakan dalam penelitian ini yaitu 28 siswa kelas IV. Teknik pengumpulan data yang digunakan dalam penelitian ini yaitu observasi, tes dan dokumentasi. Hasil penelitian menunjukkan bahwa dengan pemanfaatan media audio visual pada pembelajaran IPS terdapat pengaruh terhadap hasil belajar siswa kelas IV SD Negeri Alluka, Kabupaten Gowa. Hal ini dapat di lihat pada nilai rata-rata hasil belajar siswa yang sebelum pemanfaatan media audio visual tergolong rendah 43% dan setelah pemanfaatan media audio visual nilai rata-rata yang di peroleh tergolong tinggi 93% sehingga dapat di simpulkan bahwa terdapat pengaruh pemanfaatan media audio visual karena dapat meningkatkan hasil belajar IPS siswa kelas IV SD Negeri Alluka, Kabupaten Gowa.
Efektivitas Penggunaan Media Kartu Warna Terhadap Keterampilan Menulis Pantun Siswa Sekolah Dasar
Authors: Hendra  , Bahrun  , Munir
Published: March 2024

Penelitian ini bertujuan bagaimana efektivitas media kartu wana terhadap keterampilan menulis pantun siswa pada pembelajaran Bahasa Indineisa kelas V SD Negeri Tille. Jenis penelitian ini adalah kuantitatif eksperimen (pre experimental). Desain ini menggunakan kelas eksperimen diberikan model pembelajaran. Setelah diberikan perlakuan maka diberikan tes akhir.  Adapun kriteria pengujian normalitas yaitu nilai sig > 0.05 maka data berdistribusi normal jika sig < 0,05 maka data berdistribusi tidak normal. Dari hasil pengujian maka nilai Pretest 0,007 > 0,05 dan nilai Post-test 0,07 > 0,05 dari tes tersebut dapat disimpulkan bahwa nilai Pretest lebih besar dari 0,05 dan nilai Post-test lebih besar dari 0,05. Hasil pengujian homogenitas diperoleh nilai Sig α = 0,198, ini berarti nilai Sig lebih besar dari α (0,198 > 0,05) sehingga dapat disimpulkan bahwa kedua kelompok bersifat homogen. hasil hipotesis diperoleh Sig (2.Tailed) = 0,000 artinya bahwa H0 ditolak karena Sig (2.Tailed) < α atau (0,000 < 0,05). H1 diterima karena Sig (Tailed) > α atau (0,198 > 0,05). Pada analisis uji T , Sig < tabel atau (0,198 < 1,267).
Pengembangan Komik Edukasi Detektif Sains Sebagai Media Pembelajaran Literasi Sains Sekolah Dasar
Authors: Oryzasativa Tristaoryza , Sari Tita Tanjung , Kadarisman
Published: March 2024

Saat ini, konsep pembelajaran yang digunakan dalam mewujudkan pembebelajaran abad 21, salah satunya yaitu siswa membutuhkan media atau sarana dalam kegiatan pembelajaran agar kegiatan pembelajaran menjadi menyenangkan. Komik edukasi menjadi salah satu alternatif yang digunakan sebagai media pembelajaran untuk meningkatkan kualitas pendidikan menjadi lebih baik. Penelitian ini menggunakan metode penelitian R & D (Research and Development) dengan tahap penelitian model Borg and Gall yang telah dimodifikasi oleh Sugiono yang terdiri dari 7 tahap penelitian karena keterbatasan waktu, biaya dan juga dampak dari pandemi covid-19. Penelitian ini bertujuan untuk: (1) mendeskripsikan pengembangan komik edukasi “Detektif Sains” sebagai media pembelajaran (2) mengetahui respon siswa terhadap pengembangan komik edukasi “Detektif Sains” sebagai media pembelajaran. Subjek penelitian ini adalah siswa kelas V Sekolah Dasar. Instrumen pada penelitian ini berupa instrumen validasi produk dan respon siswa, adapun skala analisis data yang digunakan yaitu skala likert dan skala guttman. Dalam pembuatannya, aplikasi yang digunakan seperti medibangpaint photoshop cs3 dan canva. Hasil penelitian menunjukkan bahwa: (1) pengembangan dalam penelitian ini dinyatakan layak digunakan sebagai media pembelajaran, hal ini beradasarkan validasi desain media dan materi dengan persentase berturut-turut sebesar 94% dan 92% dengan kriteria “Sangat Sesuai” dan “Tidak Revisi”. (2) hasil respon siswa atau uji coba produk terhadap 8 orang siswa sekolah dasar diperoleh nilai dengan persentase sebesar 95% dengan kriteria “Sangat Baik”. Maka dapat disimpulkan bahwa media pembelajaran komik edukasi “Detektif Sains” dapat dinyatakan layak dan sesuai untuk digunakan sebagai alternatif media pembelajaran.
Pengaruh Model Somatic, Auditory, Visual, dan Intellectual Terhadap Keterampilan Menulis Puisi Siswa Sekolah Dasar
Authors: Baihaqi Dwi Isfar , Adam Andi , Syakur Abdan
Published: March 2024

Tujuan penelitian adalah Untuk mengetahui pengaruh model Savi terhadap keterampilan menulis Puisi siswa kelas V UPT SPF SDN 112 Barang Kabupaten Bulukumba. Jenis penelitian ini adalah penelitian kuantitatif dengan Pre-Eksperimental Design. Teknik pengumpulan data yang digunakan yaitu observasi dan tes bebentuk essay. Hasil penelitian menunjukkan bahwa penggunaan model Savi terhadap keterampilan menulis puisi pada siswa positif lebih baik dari pada sebelum menggunakan model Savi . hasil analisis statistik inferensial menggunakan rumus uji-t dan diketahui bahwa nilai Thitung yang diperoleh Thitung = 17,128 dan T tabel = 2,13145 maka diperoleh Thitung  > Ttabel atau 17,128 > 2,13145. Sehingga dapat disimpulkan bahwa Ho (tidak ada pengaruh) ditolak dan H1 (Ada pengaruh) diterima. Ini membuktikan bahwa ada pengaruh penggunaan model Savi terhadap keterampilan menulis puisi siswa kelas V UPT SPF SDN 112 Barang Kabupaten Bulukumba.
Hubungan Antara Kecerdasan Emosional dengan Hasil Belajar Keterampilan Bahasa Indonesia Murid Sekolah Dasar
Authors: Syamsuriyanti Syamsuriyanti , Hakim Ulfayani , Nurmayani Nurmayani
Published: March 2024

Penelitian ini bertujuan untuk mengetahui dan mendeskripsikan hubungan anatara kecerdasan emosional dengan hasil belajar keterampilan bahasa indonesia murid kelas IV SDN No.160 Inpres Bontolebang Kecamatan Polombangkeng Selatan Kabupaten Takalar berjumlah 19 murid. Subjek penelitian ini adalah murid kelas IV  SDN No.160 Inpres Bontolebang Kecamatan Polombangkeng Selatan Kabupaten Takalar berjumlah 19 murid. Penelitian ini dilaksanakan sebanyak 5 kali pertemuan. Teknik pengumpulan data dilakukan dengan menggunakan angket dan tes hasil belajar. Data yang terkumpul dianalisis secara kuantitatif dengan menggunakan statistik deskriptif dan statistik inferensial. Pengukuran terhadap kecerdasan emosional murid menggunakan instrument angket model skala likert dengan rentang skor 1-5. Hasil belajar bahasa Indonesia murid dengan instrument tes hasil belajar. Data penelitian diolah dengan Teknik regresi sederhana dan korelasi dengan taraf signifikan a=0,05. Hasil analisis kuantitatif menunjukkan bahwa 1) Hasil data statistik deskriptif kecerdasan emosional dan hasil belajar sama yakni kedua variabel berada pada kategori yang sangat rendah. 2) Hasil data statistik inferensial menunjukkan bahwa nilai sig. (2-tailed) pada perhitungan korelasi product moment adalah 0,833. Jika dilihat dari  product moment yakni 0,833 > 0,456 pada taraf signifikan 5% dengan N=19 atau > dengan demikian dapat disimpulkan bahwa “terdapat hubungan yang signifikan antara kecerdasan emosional dengan hasil belajar keterampilan bahasa Indonesia murid kelas IV SDN No.160 Inpres Bontolebang Kecamatan Polombangkeng Selatan Kabupaten Takalar.
The commitment of the European Union to no longer be vulnerable to gas supply from Russia
Authors: PLESKATSEVICH Olga , MOUTINHO Nuno
Published: March 2024

The development of economies has been linked to the capacity to use energy. Oil has a significant impact on everyday life and oil price fluctuations are of concern to all countries because they have a major impact on countries’ economies. Because oil prices have daily fluctuation with impact on demand, this study analyses the effects of oil prices on the main macroeconomic indicators of two oil-consuming countries before the war between Russia and Ukraine. Given that Belarus and Portugal have different macroeconomic contexts, it is assumed that a change in oil prices will have different effects on each country’s economy. We use Vector Autoregression (VAR) models to show that changes in oil prices have a negative impact on the economic development of both countries. We also conclude that oil price shocks have a more profound effect on the Portuguese economy than on the Belarusian economy. Although oil prices have negative effects on macroeconomic indicators in both countries, these are more profound in Portugal. Furthermore, the negative impact is greater in the short term and weakens over the years. Based on a period before the war between Ukraine and Russia, this work provides valuable information for governments about the impact of oil prices and evidence the short-tern and long term effects.
Connectedness to Water as a Predictor of Household Participation in Water Resources Conservation in Singida Municipality, Tanzania
Authors: Muwelu Lunango Gabriel , Shitima Christina Mwivei , Utouh Harold Martin
Published: March 2024

A low level of household participation in conserving water resources threatens the future of human survival because water is a unique substance with no substitutes. In addition, despite diverse discussions regarding water accessibility and the need for conservation, the literature is even scarce on the linkage between these two important constructs. Therefore, this paper examines connectedness to water and its influence on household participation in water resources conservation in Singida Municipality, Tanzania. Using a quantitative study approach with a cross-sectional survey, primary data were collected from 391 households in Singida Municipality to investigate water accessibility, considering the aspects of physical access, economic access, and cultural acceptability, as well as the number of water conservation practices households engages in. The Structural Equation Model (SEM) analysis reveals a positive relationship between water accessibility and participation in water conservation practices (WCPs) at 1% (Z=7.34, p<0.01). The study recommends that policymakers, agencies, and water sector stakeholders need to enhance their efforts to provide clean and safe water services to all community members to uphold the right to water for everyone and increase the level of participation in water resource conservation.
AVALIAÇÃO DA EFICÁCIA E SEGURANÇA DA HEPATECTOMIA LAPAROSCÓPICA VERSUS ABERTA EM PACIENTES COM CARCINOMA HEPATOCELULAR
Authors: Santos Filho Carlos Antonio dos , Godoi Arthur Teixeira , Bontempo André Sardinha , Campos Gabriel dos Santos , Almeida Kelly Cristina
Published: March 2024

Introdução: A avaliação da eficácia e segurança da hepatectomia laparoscópica em comparação com a aberta em pacientes diagnosticados com carcinoma hepatocelular tem sido objeto de crescente interesse na comunidade médica. Considerando a relevância do carcinoma hepatocelular como uma das principais causas de morbidade e mortalidade relacionadas ao câncer, a escolha da abordagem cirúrgica adequada desempenha um papel crucial na gestão eficaz desses casos. A literatura médica tem apresentado evidências conflitantes e limitadas em relação à superioridade entre as técnicas laparoscópica e aberta, justificando assim uma revisão sistemática abrangente. Objetivo: Analisar de maneira abrangente os estudos publicados nos últimos 10 anos que comparam a hepatectomia laparoscópica com a aberta em pacientes com carcinoma hepatocelular. Buscamos sintetizar as evidências disponíveis para fornecer uma visão mais clara sobre a eficácia e segurança dessas abordagens cirúrgicas, contribuindo assim para a tomada de decisão clínica informada. Metodologia: A pesquisa foi conduzida conforme as diretrizes do PRISMA, abrangendo as bases de dados PubMed, Scielo e Web of Science. Utilizamos cinco descritores principais relacionados a hepatectomia laparoscópica, carcinoma hepatocelular e comparação de técnicas cirúrgicas. Os critérios de inclusão abrangeram estudos publicados nos últimos 10 anos, abordando diretamente a comparação entre hepatectomia laparoscópica e aberta em pacientes com carcinoma hepatocelular. Critérios de exclusão consideraram estudos não relevantes, duplicatas e falta de dados essenciais. Resultados: Evidenciaram uma tendência significativa em direção à eficácia e segurança comparáveis entre a hepatectomia laparoscópica e a aberta. Principais tópicos abordados incluíram tempo de recuperação, complicações pós-operatórias e sobrevida global dos pacientes. Conclusão: Esta revisão sistemática fornece uma síntese abrangente das evidências disponíveis nos últimos 10 anos, indicando que ambas as abordagens cirúrgicas apresentam resultados semelhantes em termos de eficácia e segurança para pacientes com carcinoma hepatocelular. Esses achados podem orientar decisões clínicas mais informadas, embasando futuras práticas cirúrgicas.
Quantifying the δ15N trophic offset in a cold-water scleractinian coral (CWC): implications for the CWC diet and coral δ15N as a marine N cycle proxy
Authors: Mottram Josie L. , Gothmann Anne M. , Prokopenko Maria G. , Cordova Austin , Rollinson Veronica , Dobkowski Katie , Granger Julie
Published: March 2024

Abstract. The nitrogen (N) isotope composition (δ15N) of cold-water corals is a promising proxy for reconstructing past ocean N cycling, as a strong correlation was found between the δ15N of the organic nitrogen preserved in coral skeletons and the δ15N of particulate organic matter exported from the surface ocean. However, a large offset of 8 ‰–9 ‰ between the δ15N recorded by the coral and that of exported particulate organic matter remains unexplained. The 8 ‰–9 ‰ offset may signal a higher trophic level of coral dietary sources, an unusually large trophic isotope effect or a biosynthetic δ15N offset between the coral's soft tissue and skeletal organic matter, or some combinations of these factors. To understand the origin of the offset and further validate the proxy, we investigated the trophic ecology of the asymbiotic scleractinian cold-water coral Balanophyllia elegans, both in a laboratory setting and in its natural habitat. A long-term incubation experiment of B. elegans fed on an isotopically controlled diet yielded a canonical trophic isotope effect of 3.0 ± 0.1 ‰ between coral soft tissue and the Artemia prey. The trophic isotope effect was not detectably influenced by sustained food limitation. A long N turnover of coral soft tissue, expressed as an e-folding time, of 291 ± 15 d in the well-fed incubations indicates that coral skeleton δ15N is not likely to track subannual (e.g., seasonal) variability in diet δ15N. Specimens of B. elegans from the subtidal zone near San Juan Channel (WA, USA) revealed a modest difference of 1.2 ± 0.6 ‰ between soft tissue and skeletal δ15N. The δ15N of the coral soft tissue was 12.0 ± 0.6 ‰, which was ∼6 ‰ higher than that of suspended organic material that was comprised dominantly of phytoplankton – suggesting that phytoplankton is not the primary component of B. elegans' diet. An analysis of size-fractionated net tow material suggests that B. elegans fed predominantly on a size class of zooplankton ≥500 µm, implicating a two-level trophic transfer between phytoplankton material and coral tissue. These results point to a feeding strategy that may result in an influence of the regional food web structure on the cold-water coral δ15N. This factor should be taken into consideration when applying the proxy to paleo-oceanographic studies of ocean N cycling.
Temperature effect on seawater ƒCO2 revisited: theoretical basis, uncertainty analysis, and implications for parameterising carbonic acid equilibrium constants
Authors: Humphreys Matthew P.
Published: March 2024

Abstract. The sensitivity of the fugacity of carbon dioxide in seawater (ƒCO2) to temperature (denoted υ, reported in % °C–1) is critical for the accurate ƒCO2 measurements needed to build global carbon budgets and for understanding the drivers of air-sea CO2 flux variability across the global ocean. Yet understanding and computing this property have until now been restricted to either using purely empirical functions fitted to experimental data or determining it as an emergent property of a fully resolved marine carbonate system, and these two approaches are not consistent with each other. The lack of a theoretical basis and an uncertainty estimate for υ has hindered resolving this discrepancy. Here, we develop a new approach to calculating the temperature sensitivity of ƒCO2 based on the equations governing the marine carbonate system and the van ‘t Hoff equation. This shows that ln(ƒCO2) should be proportional to 1/tK (where tK is temperature in K) to first order, rather than to temperature as has previously been assumed. Our new approach is consistent with experimental data, although more measurements are needed to confirm this, particularly at temperatures above 25 °C. It is consistent with field data, performing better than any other approach for adjusting ƒCO2 data by up to 10 °C. It is also consistent with calculations from a fully resolved marine carbonate system, which we have incorporated into the PyCO2SYS software. The uncertainty in υ arising from only measurement uncertainty in the scarce experimental data with which υ has been directly measured is on the order of 0.04 % °C–1, which corresponds to a 0.04 % uncertainty in ƒCO2 adjusted by +1 °C. However, spatiotemporal variability in υ is several times greater than this, so the true uncertainty due to the temperature adjustment in ƒCO2 adjusted by +1 °C using the most widely used constant υ value is around 0.24 %. This can be reduced to around 0.06 % by using the new approach proposed here, and this could be further reduced with more measurements. The spatiotemporal variability in υ arises from the equilibrium constants for CO2 solubility and carbonic acid dissociation (K1* and K2*) and its magnitude varies significantly depending on which parameterisation is used for K1* and K2*. Seawater ƒCO2 can be measured accurately enough that additional experiments should be able to detect spatiotemporal variability in υ and distinguish between the different parameterisations for K1* and K2*. Because the most widely used constant υ was coincidentally measured from seawater with roughly global average υ, our results are unlikely to significantly affect global air-sea CO2 flux budgets, but may have more important implications for regional budgets and studies that adjust by larger temperature differences.
PANABIO: a point-referenced PAN-Arctic data collection of benthic BIOtas
Authors: Piepenburg Dieter , Brey Thomas , Teschke Katharina , Dannheim Jennifer , Kloss Paul , Rehage Marianne , Hansen Miriam L. S. , Kraan Casper
Published: March 2024

Abstract. Profound environmental changes, such as drastic sea-ice decline, leave large-scale ecological footprints on the distribution and composition of marine biota in the Arctic. Currently, the impact of such stressors is not sufficiently understood due to the lack of pan-Arctic data that allow for estimating ecological baselines as well as modelling current and forecast potential changes in benthic biodiversity and ecosystem functioning. Here, we introduce the PAN-Arctic data collection of benthic BIOtas (PANABIO) and discuss its timeliness, potential, and details of its further development. The data collection contains individual datasets with records (presence, counts, abundance, or biomass) of benthic fauna, usually at genus level or species level, which were identified in field samples obtained at point-referenced locations (stations) by means of grabs, towed gear, or seabed imaging. The data cover the entire pan-Arctic realm, i.e. the central Arctic Ocean, Chukchi Sea, East Siberian Sea, Laptev Sea, Kara Sea, Barents Sea (including the White Sea), Svalbard waters, Greenland Sea, Norwegian Sea, Canadian Archipelago, Beaufort Sea, and Bering Sea as well as some adjacent sub-Arctic regions (Sea of Japan, Gulf of Okhotsk). Currently (as of 14 December 2023), PANABIO includes 27 datasets with a total of 126 388 records of 2978 taxa collected from 11 555 samples taken at 10 596 stations during 1095 cruises between 1800 and 2014. These numbers will increase with more data becoming available over time through contributions from PANABIO users. The data collection is available in a PostgreSQL-based data warehouse that can be accessed and queried through an open-access front-end web service at https://critterbase.awi.de/panabio (last access: 27 February 2024). A snapshot of the current data collection and its 27 individual datasets is also available from the data publisher PANGAEA (https://doi.org/10.1594/PANGAEA.963640, Piepenburg et al., 2023).
Velocity variations and hydrological drainage at Baltoro Glacier, Pakistan
Authors: Wendleder Anna , Bramboeck Jasmin , Izzard Jamie , Erbertseder Thilo , d'Angelo Pablo , Schmitt Andreas , Quincey Duncan J. , Mayer Christoph , Braun Matthias H.
Published: March 2024

Abstract. Glacial meltwater directly influences glacier dynamics. However, in the case of debris-covered glaciers, the drivers of glacier velocity and the influence of supraglacial lakes have not yet been sufficiently analysed and understood. We present a spatio-temporal analysis of key glacier characteristics for Baltoro Glacier in the Karakoram from October 2016 to September 2022 based on Earth observation data and climate parameters extracted from the High Asia Refined analysis (HAR) data set. For the glacier variables, we used surface velocity, supraglacial lake extent, melt of snow and ice, and proglacial run-off index. For climate variables, we focused on air temperature and precipitation. The surface velocity of Baltoro Glacier was characterized by a spring speed-up, summer peak, and fall speed-up with a relative increase in summer of 0.2–0.3 m d−1 (75 %–100 %) in relation to winter velocities, triggered by the onset of or an increase in basal sliding. Snow and ice melt have the largest impact on the spring speed-up, summer velocity peak, and the transition from inefficient to efficient subglacial drainage. The melt covered up to 64 % (353 km2) of the entirety (debris-covered and debris-free) of Baltoro Glacier and reached up to 4700 m a.s.l. during the first melt peak and up to 5600 m a.s.l. during summer. The temporal delay between the initial peak of seasonal melt and the first relative velocity maximum decreases downglacier. Drainage from supraglacial lakes (3.6–5.9 km2) contributed to the fall speed-up, which showed a 0.1–0.2 m d−1 (20 %–30 %) lower magnitude compared to the summer velocity peak. Most of the run-off can be attributed to the melt of snow and ice. However, from mid-June onward, the lakes play an increasing role, even though their contribution is estimated to be only about half of that of the melt. The observed increase in summer air temperatures leads to a greater extent of melt, as well as to a rise in the number and total area of supraglacial lakes. This tendency is expected to intensify in a future warming climate.