bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Deep Learning Approach for the Assessment of Signal Quality of Non-Invasive Foetal Electrocardiography
Authors: Mertes Gert , Long Yuan , Liu Zhangdaihong , Li Yuhui , Yang Yang , Clifton David A. 
Published: April 2022

Non-invasive foetal electrocardiography (NI-FECG) has become an important prenatal monitoring method in the hospital. However, due to its susceptibility to non-stationary noise sources and lack of robust extraction methods, the capture of high-quality NI-FECG remains a challenge. Recording waveforms of sufficient quality for clinical use typically requires human visual inspection of each recording. A Signal Quality Index (SQI) can help to automate this task but, contrary to adult ECG, work on SQIs for NI-FECG is sparse. In this paper, a multi-channel signal quality classifier for NI-FECG waveforms is presented. The model can be used during the capture of NI-FECG to assist technicians to record high-quality waveforms, which is currently a labour-intensive task. A Convolutional Neural Network (CNN) is trained to distinguish between NI-FECG segments of high and low quality. NI-FECG recordings with one maternal channel and three abdominal channels were collected from 100 subjects during a routine hospital screening (102.6 min of data). The model achieves an average 10-fold cross-validated AUC of 0.95 ± 0.02. The results show that the model can reliably assess the FECG signal quality on our dataset. The proposed model can improve the automated capture and analysis of NI-FECG as well as reduce technician labour time.
Viral Myocarditis in the Conditions of COVID-19 Pandemic
Authors: Суджаева С.Г. 
Published: April 2022

Обзорная статья, посвященная анализу возможности развития вирусного миокардита при инфицировании вирусом в условиях COVID-19, подтверждения развития вирусного лимфоцитарного миокардита на основе изучения биопсийного материала. Представлены данные, касающиеся развития поствакцинального миокардита: встречаемость на больших массивах населения различных стран, патофизиология, клинические проявления. Приведена классификация фульминантного миокардита. Показаны различные риски при вакцинации разными видами вакцин. Алгоритм действий врача при диагностике поствакцинального миокардита. Ведение пациентов с подозрением на поствакцинальный миокардит. Представлен арсенал терапевтических препаратов, испытанных в лечении COVID-19 в течение последних трех лет. Подчеркивается, что на настоящий момент терапевтические стратегии лечения миокардита при COVID-19 остаются неясными. В настоящее время идет накопление знаний о COVID-19 и терапевтических подходах к лечению, в том числе миокардита. Тем не менее представлены подходы для лечения фульминантного миокардита – введение инотропов и/или вазопрессоров и механическая вентиляция легких. Рассматривается вопрос лечения нарушений ритма сердца, что имеет решающее значение для смягчения неблагоприятных последствий для здоровья пациента.
The review article devoted to the analysis of a possibility of development of viral myocarditis at infection with a virus in the conditions of COVID-19, confirmation of development of viral lymphocytic myocarditis on the basis of studying biopsy material. The data concerning development of vaccine-challenged myocarditis are provided: occurrence on big massifs of the population of various countries; pathophysiology, clinical manifestations. Classification of fuminant myocarditis is given. Various risks at vaccination are shown by different types of vaccines. An algorithm of actions of the doctor at diagnosis of vaccine- challenged myocarditis. Maintaining patients with suspicion of vaccine-challenged myocarditis. The arsenal of the therapeutic medicines tested in treatment of a covid within the last three years is presented. It is emphasized that currently the therapeutic strategy of treatment of myocarditis at COVID-19 remain not clear. Now there is an accumulation of knowledge of COVID-19, and therapeutic approaches to treatment, including myocarditis. Nevertheless, approaches for treatment of fuminant myocarditis – introduction of inotrop and/or vazopressor and mechanical ventilation of lungs are presented. The question of treatment of violations of a rhythm of heart is considered that is crucial for mitigation of adverse effects for health of the patient.
The Use of Lignin for Environmental Protection: An Overview of Recent Literature
Authors: BONDAREV Andreea , GHEORGHE Catalina-Gabriela 
Published: April 2022

Reducing environmental pollution is a particularly important issue, intensively studied nationally and internationally, as evidenced by the large number of scientific papers published on this topic. Literature studies show that reducing environmental pollution means not only reducing the amount of air / water / soil pollutants but also finding ways to recover waste from industrial activities that will reduce the problems of environmental pollution due to their storage.The materials resulting from the gasification processes of cellulose waste, as well as the materials obtained with the help of cellulose extracted from cellulose waste, were tested in the adsorption processes of some polluting species and the results demonstrated the efficiency of these materials for reducing the environmental pollution. The use of lignin as an adsorbent for the removal of pollutants (organic dyes or metal ions) from industrial wastewater can be considered a viable alternative, which can be a solution to both the problem of lignin recovery and the reduction of pollutant content in industrial wastewater.
Wisata Swadaya Desa Berbasis Masyarakat dalam Meningkatkan Kelestarian Lingkungan dan Ekonomi Masyarakat Studi Kasus di Kelurahan Loloan Timur Kecamatan Jembrana, Bali
Authors: Fathurrahim  
Published: April 2022

In 2020 the Ministry of Environment and Forestry released the management report of 36,725,828.83 tons of waste. In Bali, especially at Kuta beach, the joint team cleaned up about 30 tons of garbage on January 1, 2021. Naturally, such condition is very concerning. However, it does not only occur on Kuta beach, but also on beaches and surrounding rivers located in Bali Province. Therefore, there is an emerging environmental movement of young people in East Loloan who call themselves DARLING or which stands for "Sadar Lingkungan" (environmentally aware). One of the things they did was building an ambenan on a riverbank which is now called Ambenan Ijogading. The current study employs a qualitative method. The data were collected by interviews, observation and documentation. The current study aims to: 1) find out the types and components of Ambenan Ijogading as a tourist attraction, 2) find out the form of community empowerment in Ambenan Ijogading, 3) find out the supporting and inhibiting factors for Ambenan Ijogading as a tourist attraction. The results of this study are 1) Ambenan Ijogading tourist attraction is categorized as a naturally-occurring tourist attraction and also belongs to marine tourism. Meanwhile the tourism components include accommodations, food and culinary sector, attractions, and entertainment facilities. 2) The community empowerment found were done by maintaining the cleanliness of the surrounding environment as well as the cleanliness of the Ijogading river flow, painting the road to Ambenan Ijogading, and manufacturing natural liquid fertilizer. 3) The internal supporting factor is public awareness to develop tourist villages and the external factor is the many potentials that Loloan village possesses. The internal inhibiting factor is the limited human resources while the external inhibiting factor is the frequent flooding which results in frequent damaged facilities.
Field focusing on carbon nanohorns
Authors: Tanabe Katsuaki 
Published: April 2022

Abstract
Carbon nanohorns are a unique sharp conical nanostructure, with various potential applications including field emitters. Inspired by the recently measured negative real part of the dielectric constant of carbon nanotubes in the mid- and far-infrared regions, we numerically investigate the field focusing effect around carbon nanohorns. Our present study calculates the field enhancement factors at the tips of carbon nanohorns, quantitatively representing the degree of field focusing. Our calculations are based on the classical electromagnetic field theory in the quasistatic limit, for a model system consisting of a subwavelength-scale prolate hemispheroidal body protruding from a conducting plane. Field enhancement factors of about 300 and 100 in the air and H2O, respectively, are observed around 0.1 eV (∼10 μm, ∼20 THz) for the incident electric field parallel to the carbon nanohorn. For the far-infrared region, the field enhancement factor ascends to 6 × 106 at 3 meV (∼400 μm, ∼0.7 THz) and 7 × 108 at 2 meV (∼600 μm, ∼0.5 THz) for the nanohorn aspect ratio of 100 and 1000, respectively. Our findings could lead to further improvement of carbon-based electrical and optical devices.
Film growth mechanism of mist-chemical-vapor-deposited magnetite
Authors: Kan Daisuke , Shiraki Hiroshi , Horai Shinji , Shimakawa Yuichi 
Published: April 2022

Abstract
Crystal growth techniques using mist precursors, such as mist chemical vapor deposition (mist CVD), are useful for growing epitaxial thin films of various functional oxides under non-vacuum conditions and at relatively low temperatures. Their growth mechanism remains elusive, however, so we developed a home-made reaction chamber for mist CVD and investigated the epitaxial growth mechanism of magnetite Fe3O4 using alcoholic mists of iron acetylacetonate precursors. We show here that grown epitaxial films’ structural and physical properties depend on mist flow rates (or N2 carrier gas flow rates). Increasing the mist flow and promoting mists’ reactions on substrate surfaces produce Fe3O4 epitaxial films having larger magnetizations and lower electrical resistivities and exhibiting the Verwey transition. We also show that films’ properties are modified by changing either water additive concentrations in alcoholic mist solutions or the distance (the joint pipe length) between the mist bottle and the reaction chamber. Our results highlight the significance of the mist-flow-induced reactions for mist CVD epitaxial growth, providing new insight into the mechanism of epitaxial growth by mist CVD.
Mechanical energy dissipation of an oscillating cantilever close to a conductive substrate partly covered with thin mica films evaluated by frequency modulation atomic force microscopy
Authors: Hasan Md Mahamudul , Arai Toyoko , Tomitori Masahiko 
Published: April 2022

Abstract
Mechanical energy stored in an oscillating cantilever in frequency modulation atomic force microscopy (FM-AFM) was dissipated through nonconservative interactions between a sample and a tip on the cantilever. The energy dissipation (D
dis) was measured using FM-AFM with a metal-coated tip for a metal-coated Si substrate partly covered with thin mica films. At tip–sample separations where electrostatic force was dominant under a bias voltage, Joule heat was generated owing to the tip oscillation, responsible for D
dis. From analysis of D
dis and the frequency shift of the cantilever, electric resistance responsible for the Joule heat was estimated to be of the order of GΩ. The great values of the resistance were discussed in the terms of surface scattering of charges moved by the oscillating tip and the dielectric energy loss in the mica films. Measurement of the energy dissipation exhibited potential to probe the local surface electronic properties in non-contact.
Detecting the orbital angular momentum from speckle via convolutional neural network
Authors: Huang Huiling , Liu Yanfeng , Han Jun 
Published: April 2022

Abstract
The inhomogeneity of turbid medium disrupts the coherent vortex structure of the vortex beam and causes the formation of a speckle pattern. Here, we propose a new, flexible approach to measure the orbital angular momentum (OAM) of vortex beams through a turbid medium by a convolutional neural network. The proposed technique directly recognizes the speckle image and obtains the corresponding OAM mode information. The accuracies exceed 99% and 97% in simulations and experiments respectively. In addition, the relationship between the recognition accuracy and environmental noise level, is present. The results show great potential in fiber communication, biomedical imaging and astronomical application, etc.
Penerapan Model Pembelajaran Kooperatif Tipe Team Games Tournament Untuk Meningkatkan Hasil Belajar Matematika Materi Sistem Koordinat Siswa Kelas VIII 6 di MTS Negeri 3 Kota Padang Tahun Pelajaran 2018/2019
Authors: Azmir Safinah , Yolanda Nela Sari 
Published: April 2022

Model pembelajaran kooperatif tipeTGT suatu model pembelajaran yang dilakukan dengan proses permainan. Proses pembelajaran yang melibatkan keaktifan siswa memberikan rasa percaya diri. Model pembelajaran kooperatif tipeTGT membuat siswa lebih aktif dan bersemangat dalam belajar.
Tujuan penelitian ini adalah untuk meningkatkan hasil belajar siswa kelas VIII 6 pada pembelajaran matematika melalui menerapkan model pembelajaran team games tournament pada pembelajaran matematika materi sistem koordinat di MTsN 3 Kota Padang tahun Pelajaran 2018/2019.
Rancangan penelitian yang digunakan dalam penelitian ini adalah penelitian tindakankelas (PTK). Pada penelitian ini, subyek penelitiannya adalah siswa kelas VIII 6 MTs Negeri 3 Kota Padang, dengan jumlah siswa 36 siswa.
Berdasarkan hasil penelitian yang dilakukan oleh peneliti pada penerapan model pembelajaran kooperatif tipe TGT menunjukan terdapat peningkatan pada setiap siklusnya diantaranya adalah pada tahap prasiklus siswa yang tidak mencapai KKM 75 sebanyak 28 siswa (78%) sedangkan yang mencapai KKM 75 atau lulus sebanyak 8 siswa (22%) dengan nilai rata-rata sebesar 63.19, sedangkan pada siklus pertama mengalami peningkatan yakni dengan jumlah siswa 36 siswa yang tuntas atau mencapai KKM 75 sebanyak 20 siswa (56%), sedangkan yang tidak tuntas 16 siswa (44%) dengan nilai rata-rata sebesar 71.11, selanjutnya pada siklus kedua dengan siswa 36 orang siswa yang tuntas 31 siswa (86%) sedangkan yang tidak tuntas 5 orang siswa (14%) dengan nilai rata-rata sebesar 76.80.
Dapat disimpulankan bahwa melalui penerapan model pembelajaran Kooperatif tipe Teams Game Tournament (TGT) dapat meningkatkan hasil belajar Matematika pada materi system koordinat siswa kelas VIII 6 MTs Negeri 3 Kota Padang tahun pelajaran 2018/2019.
Flower differentiation and fruiting dynamics in olive trees (Olea europaea): Eco-physiological analysis in the Mediterranean basin
Authors: Maniriho Festus 
Published: April 2022

The formation of flowers in sufficient number and quality is a prerequisite for a successful subsequent fruit set. Despite the abundant flowering, olive trees (Olea europea) are characterized by a very low fruit set, and a very severe yield alteration leading to market fluctuation over time. The goal of this paper is to explore and analyze eco-physiological driving factors behind the poor fruit set in Mediterranean olive groves. The key mechanisms causing floral differentiation and extreme yield alternate are functional of plant genetic variability, nutrient competition, and some ecological aspects as a response to climate change. Additionally, olive inflorescence architecture appears to be complex and can vary between cultivars; the olive flower differentiation results in a variable proportion of hermaphrodite, pistillate and staminate flowers among olive cultivars as well as across canopy positions and branches, enhancing nutrient competition between flowers. Self-pollination could be one of the limiting factors for increasing early fruit abscission and extreme alternate fruit-bearing. Hormonal treatments to reduce alternate production in olive trees should be explored. The current review analysis shall help to improve olive grove management, but also for breeding new cultivars more suitable for Mediteranean agro-ecological constraints. Ovule viability and fertilisation, and embryo sac development abnormalities should all be further investigated.
Expression of Students’ Elementary School on Planting Lesson
Authors: Ngkoti Indriyani 
Published: April 2022

Purpose of study: The purpose of this study is to know the students' expressions in carrying out environmental themes by planting trees.
Methodology: This study uses qualitative research. The research approach used a phenomenological research design.
Main finding: Research findings show that elementary school students show positive and negative expressions in the process of planting and maintaining trees.
Novelty/Originality of this study: Learning environmental themes through planting activities has a positive tendency. Students like planting learning activities. Teachers can see learning innovations in environmental themes in this study. So that elementary school teachers can apply similar learning in other primary schools.
Implementasi Pendidikan Karakter Cinta Tanah Air dalam Proses Pembelajaran di Sekolah Dasar
Authors: Daud Daud , Triadi Yanuar 
Published: April 2022

Tujuan Penelitian: Tujuan penelitian ini yaitu untuk memberikan gambaran terhadap bagaimana implementasi pendidikan karakter cinta tanah di sekolah dasar. Metode Penelitian: Penelitian ini berupa kualitatif dengan pendekatan analisis deskriptif. Penelitian ini akan menggambarkan sebuah kondisi dengan penjabaran dan uraian yang mendetail. Temuan Utama: Pelaksanaan pendidikan karakter religius, cinta tanah air, disiplin sudah berjalan dengan baik sesuai sebagaimana yang diharapkan. Namun perlu ada beberapa perbaikan lagi, seperti RPP yang dijadikan pedoman dalam pelaksanaan pendidikan karakter ini. Penulisan RPP lebih diperbaiki lagi berfungsi sebagaimana mestinya. Karena melalui RPP bisa mewujudkan pendidikan karakter yang religius pada siswa, sesuai dengan model pembelajarannya yaitu, keteladanan, pembinaan disiplin, CTL pembiasaan bermain peran, serta pembelajaran yang partisipatif. Dalam implementasi pendidikan karakter dalam pelaksanaannya telah berjalan dengan baik, karena guru membrikan pengetahuan karakter sesuai yang dibutuhkan oleh siswa. Keberhasilan pelaksanaan ini akan terlihat ketika proses pembelajaran dimulai, seperti ketika masuk kelas, proses belajar, jam istirahat, serta kegiatan pembelajaran lainnya. Untuk membina karakter cinta tanah air guru bisa menanamkannya melalui materi-materi pelajaran yang sedang diajarkan, selain itu juga melalui perbuatan dan kegiatan keseharian yang berkaitan dengan pengembangan sikap spontan, keteladanan dan yang mencerminkan karakter cinta tanah air di dalam kelas. Keterbaruan Penelitian: Keterbaruan dalam penelitian ini berupa menggambarkan bagaimana implementasi pendidikan karakter cinta tanah air untuk siswa sekolah dasar.
Analisis Motivasi Belajar Peserta didik Kelas IV Pada Pembelajaran Tematik
Authors: Fadilah Agus 
Published: April 2022

Tujuan Penelitian: Tujuan penelitian ini adalah untuk mengetahui dampak motivasi belajar peserta didik terhadap pembelajaran tematik di Sekolah Dasar kelas 4. Metode Penelitian: Jenis penelitian ini adalah kualitatif. Sampel dalam penelitian ini adalah 8 peserta didik kelas IV SD Negeri 76/I Sungai Buluh, dengan teknik pengambilan sampel adalah total sampling. Instrumen pengumpulan data yang digunakan adalah wawancara. Hasil wawancara penelitian ini dikatakan valid jika pertanyaan dalam angket mampu mengungkap hubungan hasil belajar yang akan diteliti. Analisis data menggunakan statistik deskriptip, yaitu mean, media, nilai maksimum dan minimum dan standar deviasi. Temuan Utama: penelitian ini adalah pembelajaran tematik bisa dipengaruhi oleh motivasi belajar peserta didik. Keterbaruan Penelitian: Keterbaruan dalam penelitian ini ialah pembelajaran tematik bisa dipengaruhi oleh motivasi belajar peserta didik.
When Occupational Self Efficacy and Intrinsic Motivation Influence on Job Satisfaction and Job Performance
Authors: Panjaitan Wesly , Kustiawan Unggul 
Published: April 2022

AbstractThis study aims to determine the effect of occupational self-efficacy on intrinsic motivation, job satisfaction, and job performance. In addition, the influence of intrinsic motivation on job satisfaction and job performance. This research is a descriptive quantitative study using the structural equational modeling (SEM) method and data collection was used by distributing online questionnaires. The population of this study is employees of private companies in Jakarta, Bogor, Depok, Tangerang, and Bekasi (Jabodetabek). The sampling method used is purposive sampling with criteria that have worked for two years and over. First, this study proves a positive influence between occupational self-efficacy and intrinsic motivation, job satisfaction, and job performance. Then it also proves that there is a positive influence between intrinsic motivation on job satisfaction but not on job performance.Keywords: occupational self-efficacy, intrinsic motivation, job satisfaction, job performance. AbstrakPenelitian ini bertujuan untuk mengetahui pengaruh efikasi diri kerja terhadap motivasi intrinsik, kepuasan kerja, dan prestasi kerja. Selain itu, pengaruh motivasi intrinsik terhadap kepuasan kerja dan prestasi kerja. Penelitian ini merupakan penelitian deskriptif kuantitatif dengan menggunakan metode structural equation modeling (SEM) dan pengumpulan data dilakukan dengan menyebarkan kuesioner online. Populasi penelitian ini adalah karyawan perusahaan swasta di Jakarta, Bogor, Depok, Tangerang, dan Bekasi (Jabodetabek). Metode pengambilan sampel yang digunakan adalah purposive sampling dengan kriteria yang telah bekerja selama dua tahun ke atas. Pertama, penelitian ini membuktikan adanya pengaruh positif antara efikasi diri kerja dan motivasi intrinsik, kepuasan kerja, dan prestasi kerja. Kemudian juga membuktikan bahwa ada pengaruh positif antara motivasi intrinsik terhadap kepuasan kerja tetapi tidak terhadap prestasi kerja.Katakunci: keberhasilan diri dalam pekerjaan, motivasi intrinsik, kepuasan kerja, prestasi kerja.