bluuebunny/crossref_metadata_2025_split huggingface dataset:
PEMBELAJARAN FISIKA DENGAN PENDEKATAN PROBLEM BASED LEARNING (PBL) MENGGUNAKAN MODUL DAN BULETIN DITINJAU DARI KEMAMPUAN VERBAL DAN MOTIVASI BERPRESTASI SISWA
Authors: Fatimah Siti , Sarwanto Sarwanto , Aminah Nonoh Siti 
Published: July 2021

<p>Tujuan penelitian ini adalah untuk mengetahui pengaruh pembelajaran fisika dengan PBL menggunakan modul dan buletin, kemampuan verbal, serta motivasi berprestasi terhadap prestasi belajar. Metode penelitian ini menggunakan penelitian eksperimen. Populasi penelitian adalah seluruh siswa kelas XI IPA di SMA Negeri 1 Sidareja tahun pelajaran 2012/2013 sebanyak 4 kelas. Sampel penelitian ditentukan dengan teknik <em>cluster random sampling</em> sebanyak 3 kelas. Kelas eksperimen 1 menggunakan modul, kelas eksperimen 2 menggunakan buletin, dan kelas eksperimen 3 menggunakan pendekatan konvensional. Teknik pengumpulan data menggunakan metode tes untuk mendapatkan data prestasi kognitif produk dan kemampuan verbal siswa, metode angket untuk mendapatkan informasi prestasi kognitif proses, prestasi afektif, dan motivasi berprestasi siswa. Uji hipotesis penelitian menggunakan uji <em>Kruskall-Wallis</em>. Hasil penelitian dapat disimpulkan: (1) pendekatan PBL menggunakan modul dan buletin memiliki pengaruh lebih baik daripada pendekatan konvensional terhadap prestasi produk dan proses; (2) tidak ada pengaruh antara pendekatan PBL menggunakan modul dan buletin dengan kemampuan verbal terhadap prestasi belajar; (3) ada pengaruh pendekatan PBL menggunakan modul dan buletin dengan motivasi berprestasi terhadap prestasi kognitif proses dan afektif; (4) pendekatan PBL menggunakan modul dan buletin memiliki interaksi yang lebih baik dengan kemampuan verbal dan motivasi berprestasi kategori tinggi dan rendah daripada pendekatan konvensional.</p><p> <strong>Kata kunci: pembelajaran fisika, pendekatan PBL, modul, buletin </strong></p>
PENGGUNAAN PENDEKATAN KONTEKSTUAL MELALUI MEDIA SIMULASI ANIMASI KOMPUTER DAN FILM PENDEK DITINJAU DARI KEMAMPUAN PENALARAN ANALITIS DAN GAYA BELAJAR SISWA
Authors: Wicaksono Anggit Grahito , Sarwanto Sarwanto , Suparmi Suparmi 
Published: July 2021

<p>Penelitian ini bertujuan untuk mengetahui pengaruh dan interaksi antara penggunaan pendekatan kontekstual melalui media simulasi animasi komputer dan film pendek, kemampuan penalaran analitis, dan gaya belajar siswa terhadap prestasi belajar siswa. Penelitian menggunakan metode kuasi eksperimen dan dilaksanakan di SMK Muhammadiyah 4 Sragen pada kelas XI TKJ (Teknik Komputer dan Jaringan) Tahun Ajaran 2012/ 2013 terdiri dari 3 kelas. Teknik pengambilan sampel menggunakan <em>cluster random sampling</em>. Sampel sebanyak 2 kelas, kelas XI TKJ 1 sebagai kelas eksperimen I mendapatkan perlakuan pembelajaran dengan pendekatan kontekstual melalui media simulasi animasi komputer dan kelas XI TKJ 2 sebagai kelas eksperimen II mendapatkan perlakuan pembelajaran dengan pendekatan kontekstual melalui media film pendek. Data diperoleh melalui teknik tes untuk prestasi kognitif, kemampuan penalaran analitis, angket gaya belajar, dan lembar observasi untuk prestasi afektif. Teknik analisis data menggunakan ANAVA tiga jalan dengan <em>General Linier Model (GLM)</em> melalui program SPSS versi 16. Hasil penelitian menunjukkan: (1) ada pengaruh penggunaan pendekatan kontekstual melalui media simulasi animasi komputer dan film pendek terhadap prestasi belajar siswa; (2) ada pengaruh kemampuan penalaran analitis terhadap prestasi belajar siswa; (3) ada pengaruh gaya belajar terhadap prestasi belajar siswa; (4) ada interaksi antara penggunaan pendekatan kontekstual melalui media simulasi animasi komputer dan film pendek dengan kemampuan penalaran analitis siswa terhadap prestasi belajar siswa; (5) tidak ada interaksi antara penggunaan pendekatan kontekstual melalui media simulasi animasi komputer dan film pendek dengan gaya belajar siswa terhadap prestasi belajar siswa; (6) ada interaksi antara kemampuan penalaran analitis dan gaya belajar siswa terhadap prestasi belajar siswa; (7) tidak ada interaksi antara penggunaan pendekatan kontekstual melalui media simulasi animasi komputer dan film pendek, kemampuan penalaran analitis dan gaya belajar siswa terhadap prestasi belajar siswa.</p><p> </p><p>Kata Kunci : Pendekatan kontekstual, simulasi animasi komputer, film pendek, kemampuan penalaran analitis, gaya belajar</p>
PENDEKATAN KONTEKSTUAL MELALUI METODE DEMONSTRASI DAN SIMULASI DALAM PEMBELAJARAN IPA DITINJAU DARI KECERDASAN SPASIAL DAN INTERAKSI SOSIAL SISWA
Authors: Purnawirawanti Yety , Sarwanto Sarwanto , Sugiyarto Sugiyarto 
Published: July 2021

<div class="Section1"><p>Tujuan penelitian ini adalah untuk mengetahui pengaruh pendekatan kontekstual demonstrasi dan simulasi, kecerdasan spasial dan interaksi sosial siswa serta interaksinya terhadap prestasi belajar. Penelitian ini merupakan penelitian eksperimen, dilaksanakan dari bulan Oktober-November 2012. Populasi penelitian ini adalahsiswa kelas V Madrasah Ibtidaiyah di Kecamatan Mantingan tahun pelajaran 2012/2013 terdiri dari enam madrasah. Sampel diperoleh dengan teknik <em>Cluster </em><em>random sampling</em><em> </em>terpilih dua madrasah. Kelas eksperimen I adalah MIN Pakah diberi pembelajaran dengan metode demonstrasi dan kelas eksperimen II adalah MI Awaliyah Kedungharjo diberi pembelajaran dengan metode simulasi. Data dikumpulkan dengan metode tes untuk prestasi belajar kognitif dan data kecerdasan spasial, angket untuk data interaksi sosial, lembar observasi dan angket tanggapan siswa untuk data prestasi belajar afektif dan psikomotorik. Hipotesis diuji menggunakan anava tiga jalan, uji lanjut dengan <em>metode scheffe</em>. Desain faktorial 2x2x2. Dari hasil analisis data disimpulkan: 1). pendekatan kontekstual melalui metode demonstrasi dan simulasi berpengaruh terhadap prestasi belajar, metode simulasi berpengaruh lebih efektif daripada metode demonstrasi; (2). kecerdasan spasial berpengaruh terhadap prestasi belajar; 3). interaksi sosial siswa berpengaruh terhadap prestasi belajar afektif dan psikomotorik; 4). terdapat pengaruh interaksi antara metode dengan kecerdasan spasial terhadap prestasi belajar psikomotorik; 5). terdapat pengaruh interaksi antara metode dengan interaksi sosial siswa terhadap prestasi belajar kognitif; (6). terdapat pengaruh interaksi antara kecerdasan spasial dan interaksi sosial siswa terhadap prestasi belajar afektif; (7). terdapat pengaruh interaksi antara metode, kecerdasan spasial, dan interaksi sosial siswa terhadap prestasi belajar psikomotorik.</p><p> </p></div><em>Kata Kunci:</em><strong><em>Demonstrasi, simulasi, kecerdasan spasial, interaksi sosial.</em></strong><em></em>
ABOUT THE INFLUENCE OF VIBRATIONS OF THE CONVEYED LIQUID ON THE AREA OF STABILITY OF A CLOSED SYSTEM AUTOMATIC VEHICLE COURSE CONTROL
Authors: Aleksandrov Yevgen , Aleksandrova Tetyana , Grigoriev Alexander , Morhun Yaroslav 
Published: July 2021

The existing publications that investigate vehicle course stability optimization were analyzed. A mathematical model, which describes the disturbed movement of a car with a tank, was compiled. This model allows to consider the liquid free surface oscillations and determine their effect on the car course stability during constant motion or emergency braking. There was described the main information regarding the car that was used to perform mathematical calculations. An algorithm was developed for deriving the characteristic equation for a complex system of differential equations describing dynamic changes in the movement parameters of a car, oscillations of partial layers of liquid in a tank and the operation of an electromagnetic drive of the control valve and an electronic PID controller for a two-circuit system for ensuring course stability. Based on the developed mathematical model, the influence of forced oscillations of the fluid on the stability area of the system built in the plane of variable parameters of the controller is investigated. It is shown that low-frequency oscillations of the free surface of a liquid lead to a significant reduction in the stability area, which indicates the need to consider such oscillations when solving problems of analysis and synthesis of this system. It was found that for a car with a tank, where low-frequency transverse oscillations of the liquid occur, which are accompanied by a redistribution of mass and disturb the movement, an increase of the speed unambiguously leads to a deterioration in directional stability. That enables exclusion of speed from the number of variable parameters and significantly simplify the problem being solved. The calculations for cases with different loading levels were performed. It was found out that the level of liquid in the tank, considering its relationship with the speed, has an ambiguous effect on the car course stability, and it is unacceptable to limit the research calculations to the case with 50 % load. Instead of this, it is necessary to find a line that bends from above the stability boundaries that correspond to many liquid levels.
Keywords: fluid vibrations; exchange rate stability system; area of stability; tank; PID-controller; parameters.
DEVELOPMENT AND COMPARATIVE ANALYSIS OF SEMI-SUPERVISED LEARNING ALGORITHMS ON A SMALL AMOUNT OF LABELED DATA
Authors: Yamkovyi Klym 
Published: July 2021

The paper is dedicated to the development and comparative experimental analysis of semi-supervised learning approaches based on a mix of unsupervised and supervised approaches for the classification of datasets with a small amount of labeled data, namely, identifying to which of a set of categories a new observation belongs using a training set of data containing observations whose category membership is known. Semi-supervised learning is an approach to machine learning that combines a small amount of labeled data with a large amount of unlabeled data during training. Unlabeled data, when used in combination with a small quantity of labeled data, can produce significant improvement in learning accuracy. The goal is semi-supervised methods development and analysis along with comparing their accuracy and robustness on different synthetics datasets. The proposed approach is based on the unsupervised K-medoids methods, also known as the Partitioning Around Medoid algorithm, however, unlike Kmedoids the proposed algorithm first calculates medoids using only labeled data and next process unlabeled classes – assign labels of nearest medoid. Another proposed approach is the mix of the supervised method of K-nearest neighbor and unsupervised K-Means. Thus, the proposed learning algorithm uses information about both the nearest points and classes centers of mass. The methods have been implemented using Python programming language and experimentally investigated for solving classification problems using datasets with different distribution and spatial characteristics. Datasets were generated using the scikit-learn library. Was compared the developed approaches to find average accuracy on all these datasets. It was shown, that even small amounts of labeled data allow us to use semi-supervised learning, and proposed modifications ensure to improve accuracy and algorithm performance, which was demonstrated during experiments. And with the increase of available label information accuracy of the algorithms grows up. Thus, the developed algorithms are using a distance metric that considers available label information.
Keywords: Unsupervised learning, supervised learning. semi-supervised learning, clustering, distance, distance function, nearest neighbor, medoid, center of mass.
PENINGKATAN KOMPETENSI GURU DAN SISWA MELALUI PEMBUATAN WEBSITE SEKOLAH DI PONDOK PESANTREN AL IHSAN PANDEGLANG
Authors: Octa Indarso Andhika , Yoga Sembada Windhiadi , B. Pangaribuan Artambo 
Published: July 2021

Abstract
Website is a media tool that can be used by anyone, including educational institutions as a means of official, fast, and accessible communication from anywhere. This community service activity held at the Al-Ihsan Pandeglang Islamic Boarding School has a purpose to improve the abilities and self-development of teachers and students in the world of computers, especially website creation. It is hoped that, after receiving the website creation training, both teachers and students can develop and manage the school's website independently. The problems faced by partners at this time are the absence of specific ICT learning, teachers with limited ICT abilities, students who only have the ability to type, and the absence of an official school website. The implementation method used is assisting in making websites from content to management In this mentoring, pre-test and post-test surveys were also carried out to see the level of knowledge and the effects of the assistance provided. The results of the pre-test and post-test provided showed an increase in knowledge for participants by 29.31% for basic website creation, and an increase of 34.48% for knowledge related to website content. The conclusion is that this assistance is effective in increasing participants' knowledge of the creation and management of website content.
Abstrak
Website menjadi sarana media yang dapat dimanfaatkan oleh siapa saja tak terkecuali oleh institusi pendidikan sebagai sarana komunikasi yang resmi, cepat, dan bisa diakses dari mana saja. Kegiatan pengabdian masyarakat yang diselenggarakan di lingkungan Pondok Pesantren Al-Ihsan Pandeglang ini bertujuan untuk meningkatkan kemampuan dan pengembangan diri bagi para guru dan siswa dalam dunia komputer khususnya pembuatan website, diharapkan setelah menerima pelatihan pembuatan website, baik guru maupun siswa dapat mengembangkan serta mengelola secara mandiri website milik sekolah. Adapun permasalahan yang dihadapi Mitra saat ini adalah tidak adanya pembelajaran TIK secara khusus, guru dengan kemampuan TIK terbatas, siswa yang hanya memiliki kemampuan mengetik, serta tidak adanya website sekolah secara resmi.Metode pelaksanaan yang digunakan adalah melakukan pendampingan pembuatan website mulai dari konten sampai pengelolaan, dalam pendampingan tersebut dilaksanakan juga survei pre test dan post test untuk melihat sejauh mana tingkat pengetahuan dan efek dari pendampingan yang diberikan. Hasil dari pre test dan post test yang diberikan terdapat peningkatan pengetahuan bagi peserta sebesar 29.31% untuk dasar pembuatan website, dan kenaikan 34,48% untuk pengetahuan terkait konten website. Kesimpulan yang didapatkan adalah pendampingan ini efektif untuk meningkatkan pengetahuan peserta terhadap pembuatan dan pengelolaan konten website.
PROGRAM PSIKOEDUKASI POSITIVE PARENTING UNTUK MENINGKATKAN KUALITAS PENGASUHAN ORANGTUA DI KELURAHAN JATI ASIH, KECAMATAN JATI ASIH, KOTA BEKASI, JAWA BARAT
Authors: Mauna  , Akbar Zarina , Zakiah Ernita 
Published: July 2021

Abstrak
Sebagian besar warga di Kelurahan Jati Asih, Kota Bekasi bekerja untuk memenuhi kebutuhan keluarga, sehingga banyak orangtua yang menitipkan anak-anaknya untuk di asuh oleh kakek dan nenek atau pengasuh. Kesibukan orangtua, menjadi salah satu alasan anak jarang memiliki waktu bersama dengan orangtuanya, sehingga anak-anak kehilangan pengasuhan yang seharusnya di dapatkan langsung dari orangtua. Tidak jarang orangtua belum memiliki pemahaman pentingnya kualitas pengasuhan orangtua dalam menstimulasi perkembangan anak. Oleh karena, itu dinilai penting untuk memberikan program psikoedukasi ke masyarakat khususnya orangtua mengenai upaya peningkatan kualitas pengasuhan orangtua ke anak melalui metode positive parenting orangtua di Kelurahan Jati Asih, Kota Bekasi. Program ini khususnya memberikan psikoedukasi kepada orangtua yang berada di Kelurahan Jati Asih, Kota Bekasi. Namun program ini juga memberikan kesempatan kepada orangtua yang ingin mendapatkan pemahaman tentang positive parenting. Peserta yang ikut dalam kegiatan ini sebanyak 216 orang, orangtua dari Kelurahan Jati Asih yang terlibat kegiatan ini sebanyak 14 orang, dan peserta lainnya dari luar daerah Jati Asih, seperti dari Aceh, Jogja, Sulawesi, dan lainnya. Pelaksanaan kegiatan ini dilakukan secara daring dengan menggunakan aplikasi zoom, karena kondisi pandemic COVID-19, sehingga aktivitas tetap dilakukan di rumah. Program ini memberikan pengetahuan kepada peserta mengenai apa itu positive parenting, teknik-teknik positive parenting, manfaat positive parenting, dan tips untuk melaksanakan positive parenting.
Bayesian Multilevel Analysis of Determinants of Acute Respiratory Infection in Children Under The Age of Five Years in Ethiopia
Authors: Asena Tilahun Ferede , Merera Amanuel Mengistu , Senbeta Mebratu Alemu 
Published: July 2021

Abstract
Background: Acute respiratory tract infection (ARI) is one of the causes for morbidity and mortality in children under the age of 5 years in the world. Pneumonia, which is caused by respiratory tract infection, accounts for approximately 1.9 million deaths globally in children under the age of five years. Among these deaths majority occurs in the developing world. The share for low and middle-income countries takes the highest indeed. In Ethiopia, the prevalence rate of ARI was 7% according to 2016 EDHS estimates.Method: Bayesian multilevel approach was employed to assess factors associated with the prevalence of ARI among under-five children in Ethiopia. The data was collected from 10,641 children under the age of five years out of which 9,918 children were considered in this study. Result: The ARI prevalence rate for children under five years was estimated as 8.4%, which was slightly higher than the estimated prevalence level of the country. The highest proportion of the prevalence of ARI was observed for children whose mothers had no education. The major health, environmental and nutritional related background characteristics of the proportion of children who had ARI varied from one region to another. The highest prevalence of ARI was observed in Tigray (15.31%) followed by Oromia (14.40%) as opposed to the low prevalence which was recorded in Benishangul Gumuz (2.58%). The utilization of vitamin A was analyzed and the results shows that about 43.10% who received vitamin A had the lowest proportion on the prevalence of ARI (7.75%) compared to not having vitamin A. About 11.13% of under-five children had Diarrhea with the highest prevalence of ARI (24.64%) and the highest prevalence of ARI was observed for the child whose source of drinking water were unprotected/unimproved (9.39%).Conclusion: The age of the child, household wealth index, mother educational level, and vitamin A supplement, history of diarrhea, maternal work, stunting and source of drinking water was found to be significantly affecting the prevalence of ARI among children under five years. Furthermore, the study revealed that there is a significant variation of incidence of ARI between and within the regions of Ethiopia. Attention should be given to those predictor variables while planning to increase the health status of children in Ethiopia.
Safety and Clinical Efficacy of Double Posterolateral Coaxial Portals for Endoscopic Management of Posterior Ankle Impingement Syndrome
Authors: Yuan Cheng-song , Tang Kang-lai , Tang Yao , liang Tao-tao , Ma Lin , Chen Yong-hua , Bian Xu-Ting , Hu Cao , Zhang Xuan ,   10.	Jun-peng Liu, Wang Li , Mu Mi-Duo 
Published: July 2021

Abstract

Double Posterolateral Coaxial Portals has been designed by us for Endoscopic Management of Posterior Ankle Impingement. This study’s purpose was analyzed the safety and clinical efficacy of this new designed portals. Six fresh foot samples were randomly selected. The distances of two posterolateral portals to sural nerve in the neutral, dorsiflexion and plantar flexion positions were measured to evaluate the safety. The clinical efficacy of the operative approach for endoscopic management of posterior ankle impingement syndrome was prospectively analyzed, and its effectiveness and complications were evaluated. In 6 samples, the mean distances of the first and second portals to sural nerve were 2.26 ± 0.22 cm and 1.59 ± 0.12 cm in the neutral position,2.21 ± 0.21 cm and 1.55 ± 0.12 cm in the dorsiflexion 30°position, and 2.46 ± 0.29 cm and 1.73 ± 0.19 cm in the plantar flexion 30°position; thus, two portals had a big safety distance to sural nerve. Totally 38 patients received the endoscopic treatment of posterior ankle impingement syndrome with double posterolateral coaxial portals from January 2012 to December 2017. Such operative approach provided a full field of subtalar joint and posterior ankle during operation. The mean follow-up time was 28.2 (range, 24–72) months, the satisfaction rate was 94.7%; none of patients experienced complications; VAS score was decreased to 0.50 at the last visit from 5.82 before operation(P < .001), while AOFAS score was increased to 92.34 from 71.68, and the differences were both statistically significant (P < .001); the excellent/good rate was 97.3℅. In treating posterior ankle impingement syndrome, double posterolateral coaxial portals have such advantages of good safety, miniature nerve injury, a good field of posterior ankle and subtalar joint, good clinical efficacy, and few complications, thus they are an operative approach which is reliable, effective, safe and worthy of being popularized.
Does prolonged infusion time really improve the efficacy of meropenem therapy? A prospective study in critically ill patients
Authors: Zhao Yi Chang , Zou Yang , Xiao Yi Wen , Wang Feng , Zhang Bi Kui , Xiang Da Xiong , Yu Feng , Luo Hong , Yan Miao 
Published: July 2021

Abstract
Background: Meropenem is a carbapenem antibiotic that has demonstrated excellent in vitro activity against gram-negative clinical isolates and is commonly used in critically ill patients. This study aimed to find the pharmacokinetic/ pharmacodynamic of meropenem in critically ill patients and whether prolonged injection duration is really beneficial to meropenem therapy. Method: We included 209 samples in 64 patients in this prospective study. PPK analysis and Monte Carlo dosing simulations were developed using Phoenix.Results: A two-compartment model described the data adequately. Clearance (CL), volume (V), clearance of peripheral compartment (CL2), volume of peripheral compartment (V2) were 6.15 L/h, 2.83 L/h, 17.40L, and 17.48L, respectively. Creatinine clearance and uric acid were significant covariates. Patients with creatinine clearance of 60 ml/min or less and uric acid greater than 400 μmol/l could achieve the target > 90% under the minimum inhibitory concentration (MIC) of 8 mg/L, even with the administration dose of 500 mg/8 h with a 2-h infusion. Prolonging the infusion time significantly improved the therapeutic effect when MIC＜4. However, for the pharmacodynamic (PD) effects of 100% fT > MIC and 100% fT > 4MIC, no significant statistical difference was observed in critically ill patients.Conclusions: Critically ill patients with lower creatinine clearance and higher uric acid levels were likely to need a lower dosage of meropenem. Prolonged infusion time were not always beneficial for those who need a higher therapeutic target (100% fT > MIC,100% fT > 4 MIC) or with MIC 4mg/L. Increasing dose or alternative therapeutic strategies may be required for critically ill patients with drug-resistant or severe infections. The study is of great significance to guide the rational use of meropenem in critically ill patients.Trial registration: The trial was registered in the China Clinical Trial (ChiCTR1900020672). Registered on 12 January 2019.