bluuebunny/crossref_metadata_2025_split huggingface dataset:
Simulation of the Joint Movement of a Robotic-Towing Vehicle and an Aircraft Using Signals from an Optocoupler Matrix
Authors: Afonin D. V. , Pechurin A. S. , Yatsun S. F. 
Published: February 2023

Actuality.The heavy workload of airports with transport and cargo aviation creates a problem the land logistics, that seriously complicates the work of the airfield towing system and personnel working processes. That entails expences associated with delayed deliveries or equipment downtime. The usage of the automatic aircraft movement systems, which are capable of towing aircraft round the clock and quickly along the airfield, following the optimal trajectory allows to avoid such situations.Purpose of research.Creation of the mathematical model and the control algorithm for the autonomous joint movement of a wheeled aircraft towing vehicle and an aircraft, where the control is based on the signals of an optocoupler array.Methods.Achieving this goal required solving the following problems: describing of a dynamic model of wheeled bodies interconnected by an elastic element; creation of a feedback model based on a group of optocouplers detecting a contrast line; description of the logical conditions that allow determining the position of the object relative to the contrast line. To describe the dynamics of the wheeled platform, the equations of Lagrangian dynamics, as well as the numerical methods of mathematical modeling, were used. An optocoupler array is considered as a tool for estimating the position of the system relative to the contrast line.Results.A mathematical model, which explores the system movement and reveals the interaction of the system elements has been developed. An adaptive algorithm based on the discrete type feedback for the system managing is developed. An example of the control system when moving in a straight line with the passage of turns at an angle of 90 degrees is considered. A combined braking system in which the distributed brake efforts both on a aircraft and the tower are formed is proposed.Conclusion.As a result of the mathematical modeling, it was found that the system of wheeled bodies, bound by the force of elasticity, is able to perform controlled movements along a straight line and when passing sharp turns, based on the readings of the optocoupler matrix; corresponding graphs are shown.
Method for Orientation Determining of the Detail for the Automated Soldering Technological Process
Authors: Yatsun S. F. , Mal’chikov A. V. , Kochergin O. B. 
Published: February 2023

Purpose of reseach. Development of a technique for determining the orientation of parts during automatic soldering of a contact group based on the assembly of a combined image recognition systems.Methods. Analysis of the technological process of assembling a part and evaluating the possibility of using various technologies for orienting workpieces. Development of a consistent technique for orienting a part, including the stage of recognizing a rounded edge using a vision system. Development of an algorithm for recognizing the orientation of the workpiece directly from the image of the part and along the contour of the shadow of the part. Setting up full-scale experiments on a test bench, obtaining numerical values for the accuracy of recognizing the orientation of a part for various algorithms.Methodology. To solve the problem of transportation and positioning of the studied parts, methods of movement are used, due to controlled vibration inside the developed system of guides and cutters. To determine the rounded edge, image processing and recognition methods are used: the k-means method for clustering the original image, the Hough transform for contour search, etc.Results. In the course of the study, two algorithms for extracting details from the original image and the image of the shadows cast by the detail were developed. In the detection of an increased risk, more than 96%, however, when detecting sensitivity along the contour of the shadow, more than 99% were detected.Conclusion. The technique for determining details developed within the framework of the work, including the stages of preliminary sorting according to the task of vibrotransportation, the stage of searching for a round face using a technical perspective system, including the contour of shadow details, makes it possible to obtain high accuracy even when assembling video equipment with a low level of detection.
Time-Dependent Changes in Depressive Symptoms Among Control Participants in Digital-Based Psychological Intervention Studies: Meta-analysis of Randomized Controlled Trials
Authors: Tong Alan CY , Ho Florence SY , Chu Owen HH , Mak Winnie WS 
Published: February 2023

Background
Digital-based psychological interventions (DPIs) have been shown to be efficacious in many randomized controlled trials (RCTs) in dealing with depression in adults. However, the effects of control comparators in these DPI studies have been largely overlooked, and they may vary in their effects on depression management.

Objective
This meta-analytical study aimed to provide a quantitative estimate of the within-subject effects of control groups across different time intervals and explore the moderating effects of control types and symptom severity at baseline.

Methods
A systematic literature search was conducted in late September 2021 on selected electronic databases: PubMed; ProQuest; Web of Science; and the Ovid system with MEDLINE, PsycINFO, and Embase. The control conditions in 107 RCTs with a total of 11,803 adults with depressive symptoms were included in the meta-analysis, and effect sizes (Hedges g) were calculated using the standardized mean difference approach. Study quality was assessed using the Cochrane risk-of-bias tool for randomized trials version 2.

Results
The control conditions collectively yielded small to moderate effects in reducing depressive symptoms within 8 weeks since the baseline assessment (g=−0.358, 95% CI −0.434 to −0.281). The effects grew to moderate within 9 to 24 weeks (g=−0.549, 95% CI −0.638 to −0.460) and peaked at g=−0.810 (95% CI −0.950 to −0.670) between 25 and 48 weeks. The effects were maintained at moderate to large ranges (g=−0.769, 95% CI −1.041 to −0.498) beyond 48 weeks. The magnitude of the reduction differed across the types of control and severity of symptoms. Care as usual was the most powerful condition of all and produced a large effect (g=−0.950, 95% CI −1.161 to −0.739) in the medium term. The findings showed that waitlist controls also produced a significant symptomatic reduction in the short term (g=−0.291, 95% CI −0.478 to −0.104), refuting the previous suspicion of a nocebo effect. In addition, a large effect on depressive symptom reduction in the long term (g=−1.091, 95% CI −1.210 to −0.972) was noted among participants with severe levels of depressive symptoms at baseline.

Conclusions
This study provided evidence that depressive symptoms generally reduced over time among control conditions in research trials of DPIs. Given that different control conditions produce variable and significant levels of symptomatic reduction, future intervention trials must adopt an RCT design and should consider the contents of control treatments when investigating the efficacy of DPIs. The results of waitlist controls confirmed previous findings of spontaneous recovery among people with mild to moderate depressive symptoms in face-to-face studies. Researchers may adopt watchful waiting as participants wait for the availability of digital-based psychological services.
Virtual Interviews: Outcomes and Lessons Learned
Authors: Villacampa Maria Montanez , Nadeau Mark T. , Barajas Kelsi  Sexton , Wood Robert 
Published: February 2023

Background and Objectives: The family medicine residency application process is arduous and competitive. An important part of the application is the in-person interview process, which was affected during the last two interview cycles (2021-2022) due to restrictions imposed by the COVID-19 pandemic. Virtual interviews eliminate traveling costs associated with applications, potentially improving underrepresented minorities’ access to interviewing opportunities. Our goal was to assess if virtual interviews at our institution have negative or positive effects on access for underrepresented in medicine (URiM) applicants and our residency match results.
Methods: We analyzed data from 2019-2022 to compare application volumes, applicant demographics, and match results between two in-person cycles (2019 and 2020) and two virtual cycles (2021-2022). Data were analyzed using Pearson χ2 criteria and P=.05 defined significance. Differences between years for expected counts were determined using single sample χ2 tests.
Results: No statistical significance was noted on number of applications by URiM to our program despite decrease costs associated with virtual interview process. The number of URiM applicants matching to our program did not improve by simply implementing virtual interviews when compared to in-person interview seasons in the past.
Conclusions: Virtual interviews at our institution did not increase URiM applications to our program from substantial equivalent medical schools. Further research in this area from programs in other states may enhance our understanding of the impact of virtual interviews on URiM applications to residency and match results.
Effectiveness of cell and gene therapy in treatment of obliterating diseases of the arteries in the lower extremities: a review
Authors: Ha H. N. , Chervyakov Yu. V. , Gavrilenko A. V. 
Published: February 2023

The lack of significant progress in improving the results of treatment for patients with chronic lower limb ischemia (CLLI) determines a necessity to search new approaches to solve this problem. One of the promising methods for treatment of patients with CLLI is therapeutic angiogenesis. Gene and cell therapy clinical trials for this pathology have been carried out in the world for more than 20 years and showed conflicting results. It is extremely difficult to produce a drug based on cellular material, therefore the development of gene-based therapies is more promising. In most of the analyzed studies, patients with critical limb ischemia, i.e with initially with a high risk for major amputation, were included. Since the process of neoangiogenesis takes several months, it seems more logical to use that option for treatment in the earlier stages of the disease.
VEGF-165 is the most studied angiogenic agent. Only VEGF-165 is registered as a drug for treatment of patients with CLLI. There are publications on the effectiveness of treatment with a plasmid VEGF-165-gene therapy in patients with stages II and III of CLLI according to the FontaineA.V. Pokrovsky classification in a five-year follow-up study.
Pembuatan Media Pembelajaran Instalasi Penerangan Listrik Berbasis Android
Authors: Julian Rio , Muskhir Mukhlidi , Lutfhi Afdal 
Published: February 2023

Purpose of Making Android-based Learning Media using ispring suite on electrical lighting installation materials to produce valid Android-Based Learning Media. The application was made using the 4-D development model research method), respondents to media expert lecturers from the department of electrical engineering, Faculty of Engineering, Padang State University, and teachers of class XI TITL at SMK Negeri 5 Padang. The research instrument is a learning media validation questionnaire. Results response analysis show that the validation of each validator is declared valid, thus the Android-Based Electric Lighting Installation Learning Media using the Ispring Suite application is declared valid as a learning media that is worth using.
UPAYA MENINGKATKAN HASIL BELAJAR MATEMATIKA TERHADAP KONSEP BANGUN RUANG MATERI LUAS DAN VOLUME BALOK DAN KUBUS MENGGUNAKAN METODE DRILL SEKOLAH SMP ISLAM AL-GHAZALI KELAS VIII
Authors: Purnamasari Mega , Isman Jainuri , Damayanti Aulia , Ismah Ismah 
Published: February 2023

Sebagai pendidik, guru memiliki tanggung jawab besar terkait dengan kegiatan pembelajaran dan hasil belajar siswa terhadap materi yang disampaikan mengingat kemampuan dasar siswa terhadap materi belajar. Matematika berbeda-beda. Oleh itu guru harus pandai memilih strategi pembelajaran yang tepat dan sesuai dengan keadaan kelas. Pembelajaran drill merupakan salah satu alternatif pembelajaran yang menggabungkan antara belajar individu dan kelompok. Pada pembelajaran ini siswa terlebih dahulu diharuskan memahami materi dan mengerjakan soal yang ada secara individu, setelah itu siswa berdiskusi dengan teman satu kelompoknya untuk saling berbagi hasil pemikiran masing-masing. Keberhasilan siswa dalam mengikuti kegiatan pembelajaran dilihat dari hasil belajar yang diperoleh berupa nilai ulangan harian yang dilaksanakan dalam tiap akhir siklus. Tujuan penelitian ini adalah untuk mengetahui peningkatan hasil belajar matematika pada materi kubus dan balok dengan penerapan metode drill. Penelitian ini diperuntukan bagi kelas VIII. Metode yang digunakan dalam penelitian ini adalah penelitian tindakan kelas (PTK). Instrumen yang digunakan pada penelitian ini adalah tes dan non tes. Instrumen tes berupa tes tulis yang digunakan untuk mengukur hasil dan ketuntasan belajar, sedangkan instrumen non tes berupa lembar observasi dan wawancara, yang digunakan untuk melihat aktivitas siswa dan peneliti dalam proses pembelajaran. Hasil penelitian ini menunjukkan suatu peningkatan hasil belajar siswa pada siklus I, siklus II, dan siklus III. Data tentang hasil belajar siswa pada materi kubus dan balok, pada siklus I persentase sebesar 57,7%, pada siklus II persentase meningkat menjadi 84,62%. Dengan demikian dapat disimpulkan bahwa penerapan metode drill dapat meningkatkan hasil belajar siswa pada materi kubus dan balok.
PENINGKATAN HASIL BELAJAR PESERTA DIDIK PADA MATA PELAJARAN TURUNAN FUNGSI MELALUI MODEL PEMBELAJARAN FLIPPED CLASSROOM
Authors: Masitoh Siti Imas , Maharani Anggita , Lubis Yusridah 
Published: February 2023

Pembelajaran pada masa pandemi Covid-19 telah dilaksanakan secara daring, dengan beberapa ketentuan diantaranya berkurangnya jam pelajaran pada setiap mata pelajaran, seperti halnya pembelajaran matematika di satuan pendidikan SMK Negeri 1 Kadipaten yang dilakukan satu pertemuan (45 menit) dalam satu minggu, hal ini berdampak kepada implementasi pembelajaran yang menyebabkan beberapa kegiatan penting dalam pembelajaran tidak terlaksana sebagaimana harusnya, dengan demikian menyebabkan penurunan terhadap penguasaan materi oleh peserta didik, sehingga hasil belajar dari peserta didik masih banyak yang dapat dinyatakan belum tuntas atau belum mencapai Kriteria Ketuntasan Minimum (KKM) yang telah ditentukan. Tujuan dari penelitian ini adalah untuk melihat apakah terdapat peningkatan hasil belajar peserta didik melalui model flipped classroom pada mata pelajaran matematika dengan pokok bahasan materi tafsiran geometri dari turunan fungsi. tipe penelitian merupakan tipe penelitian kualitatif dengan metode Penelitian Tindakan Kelas, adapun prosedur yang digunakan yaitu perencanaan, tindakan, observasi, dan refleksi. Hasil penelitian yang diperoleh yaitu, terdapat peningkatan hasil belajar peserta didik pada pokok bahasan tafsiran geometri dari turunan fungsi dengan menggunakan model flipped clasroom adapun persentase ketuntasan belajar pada setiap siklusnya yaitu silus I 56%, siklus II 72% dan siklus III 88%.
ANALISIS TECHNOLOGICAL PEDAGOGICAL CONTENT KNOWLEDGE (TPACK) GURU PROFESIONAL DALAM PEMBELAJARAN MATEMATIKA DI SEKOLAH DASAR
Authors: Yurinda Bella , Widyasari Nurbaiti 
Published: February 2023

Penelitian ini bertujuan untuk mengetahui perbedaan Technological Pedagogical Content Knowledge (TPACK) guru yang sertifikasi dengan guru non sertifikasi dalam pembelajaran matematika di daerah Bangka. Penelitian ini dilakukan di SD Negeri se-Kecamatan Pemali Bangka, dengan sampel sebanyak 56 guru dengan masing sejumlah 28 guru baik yang telah tersertifikasi dan belum tersertifikasi. Metode yang digunakan dalam penelitian ini adalah Mixed Method dengan model Sequential explanatory. Teknik pengumpulan data yang digunakan adalah kuesioner/angket dan wawancara. Teknik analisis data yang digunakan pada data kuantitatif adalah uji statistik parametrik yaitu uji T. Sedangkan untuk data kualitatif yang digunakan yaitu reduksi data, penyajian data, dan kesimpulan. Hasil dari penelitian yang didapatkan yaitu 1) Bahwa TPACK dalam pembelajaran matematika baik guru yang sertifikasi maupun guru yang belum sertifikasi sudah bisa mengoperasikan perangkat teknologi untuk sebagai alat bantu pembelajaran. 2 ) Tidak ada perbedaan kemampuan TPACK antara guru yang sertifikasi dengan guru yang belum sertifikasi. 3) Pada komponen kemampuan Technological Knowledge guru yang sertifikasi yang diterapkan pada mata pelajaran matematika lebih baik daripada guru yang belum sertifikasi. Selain itu pada kemampuan komponen Technological Content Knowledge guru yang sertifikasi lebih baik daripada guru yang belum tersertifikasi. Tetapi pada kemampuan komponen Technological Pedagogical Content Knowledge guru yang sertifikasi lebih rendah dari guru yang belum tersertifikasi. Jadi, dapat disimpulkan bahwa baik guru yang sertifikasi maupun guru yang belum sertifikasi telah terbiasa menggunakan teknologi dalam pembelajaran matematika khususnya dalam tuntutan masa pandemi. Hal ini menunjukkan bahwa baik kemampuan pengetahuan teknologi, pedagogic, dan cara mentransfer materi melalui penerapan teknologi telah dikuasai dan dilakukan oleh guru. Akan tetapi agar selalu mengikuti perkembangan teknologi dan sesuai dengan kurikulum merdeka belajar, maka perlu terus ditingkatkan TPACK guru melalui pelatihan-pelatihan.
Model for Predicting Risk of Postpartum Purulent-Inflammatory Complications after Cesarean Section: Cohort Retrospective Study
Authors: Kutsenko I. I. , Borovikov I. O. , Magay A. S. , Bulgakova V. P. , Borovikova O. I. 
Published: February 2023

Background. Relevance of the study is related to the lack of a unified strategy for determining the risk of infectious complications of puerperium. Currently, the specialists use the collected data from studies documenting the main factors of infection in a population or cohorts of postpartum women. However, accuracy of these factors is not established and prognosis could not be personalized. The paper analyzes significant risk factors for the infectious complications associated with cesarean section (C-Section) and develops a model for their prognosis and an individual assessment of the risk of postpartum infection in order to take timely preventive measures. Objective. To identify predictors of postpartum purulent-inflammatory complications after cesarean section, to evaluate their predictive value, and to develop a statistical model for determining the risk of their occurrence.Methods. The cohort retrospective study (January 2019 to January 2022) was conducted in four obstetric health facilities of Krasnodar and was focused on analysis of medical records. Anamnestic, clinical and laboratory data of all women after cesarean section delivery were collected. Model: a patient diagnosed with any infection associated with cesarean section within 42 days after delivery — postoperative suture infection, endometritis, peritonitis, thrombophlebitis, sepsis. Infections were grouped to carry out a single risk assessment with an internal validation test and to develop a multifactor logistic regression model. All analyses were conducted using version R 3.2.3 (SPSS Inc., Chicago, IL) and Transparent Reporting of a multivariable prediction model for Individual Prognosis Or Diagnosis (TRIPOD).Results. Infection associated with cesarean section occurred in 2.50% of women (n = 548; 95% CI 2.6–3.5), suture disruption — in 0.59% (n = 129; 95%, CI 0.41–0.81), endometritis — 1.46% (n = 321; 95%, CI 1.15–1.94), peritonitis — 0.16% (n = 35; 95%, CI 0.11–0.20), thrombophlebitis 0.04% (n = 9; 95%, CI 0.01–0.05), sepsis 0.25% (n = 54; 95%, CI 0.15–0.35). The authors have identified 14 major variables with a high prognostic risk for the development of infectious complications of puerperium. The model differentiated women with and without purulent inflammatory complications of puerperium by internal validation (concordance index = 0.712, 95%, CI 0.672–0.755).Conclusion. The developed model can be used to accurately predict the risk of infectious complications after abdominal delivery and to identify high-risk patients. It ensures a differentiated approach with a possibility to expand studies and strengthen antibiotic therapy, which promotes reduction of surgical site puerperal infection.
Evaluating the Developed Model of Experimental Rhinitis in Laboratory Rats: Pre-Clinical Experimental Randomized Study
Authors: Berest I. Ye. , Tananakina T. P. , Teleshova O. V. , Burgelo E. V. , Parinov R. A. , Koretsky A. V. 
Published: February 2023

Background. Among the damaging factors affecting the mucociliary system of the nasal cavity, surgical wound is of particular relevance in the practice of an otorhinolaryngologist. The clinical assessment of regeneration of the mucociliary system is associated with certain difﬁ culties, since the intravital morphological examination of the nasal mucosa in patients is traumatic. Therefore, the development of animal models of experimental rhinitis is considered to be highly relevant in order to study the dynamics of mucociliary pathomorphological changes and assess the epithelium regeneration.Objectives. To evaluate the developed model of experimental rhinitis in laboratory rats by studying clinical, morphological and biochemical changes in the inﬂ ammatory process.Methods. The experimental rhinitis model was developed and tested on 60 mature male Wistar rats. All animals were randomized into two groups: experimental group #1 (n = 30) — rats in which experimental rhinitis modeling was performed and group #2 (n = 30) — control, intact animals. In the course of the experiment, the authors examined the content of CRP in blood, evaluated the differential blood cell count, and studied a morphology of the nasal septum mucosa in 2, 5, 10 days after the injury to assess the dynamics of the inﬂ ammatory process in rats of both groups. Statistical analysis of the study results was carried out by means of Statistica 8.0 (StatSoft Inc., USA).Results. After injury, the rats from group #1 developed acute rhinitis, which was clinically manifested by the release of mucous or mucopurulent secretion from the nostrils, sneezing and scratching the nose. An increase in CRP, band and segmented neutrophils, and a decrease in lymphocytes were observed in blood of the rats from group #1 in comparison with the control group. Microscopic analysis of changes in the nasal septum mucosa showed that the acute phase of exudative inﬂ ammation developed on the second day: vascular congestion, edema, neutrophilic inﬂ ammatory inﬁ ltration of the submucosal membrane were observed against the background of foci of epithelial necrosis. The proportion of lymphocytes and macrophages in the inﬂ ammatory inﬁ ltrate increased by the ﬁ fth day, initial signs of restoration of epithelial tissue — the formation of an undifferentiated regenerating epithelium — appeared by the tenth day.Conclusion. The results of the study show that an adequate experimental model of acute rhinitis in laboratory animals have been obtained. An acute inﬂ ammatory process is characterized by clinical manifestations and changes in blood parameters. Particular destructive and reparative-proliferative changes develop in the mucous membrane of the nasal septum of experimental animals as a result of a surgical wound.