bluuebunny/crossref_metadata_2025_split huggingface dataset:
Pengaruh Langkah Polya Terhadap Hasil Belajar Siswa dalam Menyelesaikan Soal Cerita Barisan dan Deret Geometri
Authors: Harinda Via Ditia , Tumalun Nicky Kurnia , Regar Vivian Eleonora 
Published: August 2023

Tujuan penelitian adalah untuk meneliti apakah langkah Polya mempengaruhi hasil belajar siswa SMA Negeri 1 Ratahan kelas XI untuk menyelesaikan soal cerita materi barisan dan deret geometri. Penelitian ini menggunakan jenis eksperimen semu (quasi experiment) dengan rancangan yang berbentuk posttest only control group design. Di SMA Negeri 1 Ratahan penelitian ini dilaksanakan, kelas XI MIA 3 adalah kelas eksperimen dan XI MIA 2 adalah kelas kontrol. Hasil penelitian memperlihatkan nilai rata-rata kelas kontrol adalah 72,46 sedangkan kelas eksperimen adalah 80,04 melalui pemberian tes akhir (posttest). Uji hipotesis menggunakan uji perbedaan dua rata-rata (uji t) diperoleh yaitu rata-rata hasil belajar siswa dengan menggunakan langkah Polya lebih dari rata-rata hasil belajar siswa dengan tidak menggunakan langkah Polya. Hal ini berarti langkah-langkah Polya memiliki dampak kearah yang lebih baik terhadap hasil belajar siswa.
CHRONIC CEREBRAL ISCHEMIA. MODERN VIEW OF THE PROBLEM
Authors: Cherniy T.V. , Cherniy V.I. , Svitlytska D.V. 
Published: August 2023

Introduction. Chronic cerebral ischemia (CCI) is considered a syndrome that develops as a result of a slowly progressive reduction in cerebral blood flow. This reduction occurs due to the gradual accumulation of ischemic and secondary degenerative changes in the brain, which are caused by repeated ischemic episodes resulting from the development of atherosclerosis and arterial hypertension. These changes lead to impairment of brain functions, manifested by progressive neurological, neuropsychological, and mental disorders.
The aim. To analyze the problems of pathogenesis, diagnosis, and treatment of CCI from the sources of modern literature in order to optimize the treatment of this group of patients.
Materials and methods. Bibliosemantic, comparative and method of system analysis.
Results. The pathogenetic mechanisms underlying CCI remain controversial due to the heterogeneity of causes and the complexity of the neuropathology associated with the disease. However, one common reason that can be named is dysregulation of cerebral blood flow, that results in chronic cerebral hypoperfusion, which can lead to the development of vascular cognitive impairment and dementia. Detection of biological markers in the patients' blood in combination with neuropsychological testing, neurophysiological (CEP P300, EEG) and neuroimaging (CT, MRI, Doppler Ultrasound of the head and neck) methods, which confirms the morphological substrate of vascular disease (leukoareosis, focal changes, multi-infarct condition, cerebral atrophy) and provides the possibility of choosing an effective pathogenetically-justified treatment.
Conclusions. The rating of effectiveness of treatment in CCI is complicated considering difficulties in the selection of the efficiency criteria due to the significant differences in the methodology and research formats, as well as problem of a significant medication-related burden in the case of comorbidities. In this regard, the main direction in therapy is combined neuroprotection, which allows to optimize the possibilities of this strategy and to increase its clinical significance in angioneurology.
The comparison of success status and complications in peyronie disease patients: penile plication versus plaque incision and grating techniques
Authors: DOĞAN Çağrı , AKGÜL Murat , YAZICI Cenk Murat , ŞERAMET Serkan , DAYISOYLU Hulusi , TOPKAÇ Erdem Can 
Published: August 2023

Aims: This study aimed to evaluate and compare the outcomes of tunical lengthening and shortening techniques for the surgical management of Peyronie's disease (PD) in terms of penile length, patient satisfaction, and complications.
Methods: A retrospective analysis was conducted on PD patients who underwent surgical procedures between January 2017 and May 2023 at a single institute. Patient demographics, comorbidities, penile curvature, penile length, and surgical techniques were evaluated. The surgical procedures included plaque incision and grafting, and tunical plication. Post-operative data, including penile length, residual curvature, patient satisfaction, adverse events, and erectile function, were collected at 1-12 months of surgery.
Results: A total of 36 patients (mean follow-up period: 432.25±121.14 days) underwent surgical procedures for PD. Penile length in the tunical lengthening group (13.04±1.62 cm) was significantly longer than in the tunical shortening group (10.85±1.24 cm, p=0.001). Tunical shortening procedures were associated with a higher rate of penile shortening (57.1% vs. 6.7%, p=0.001) and suture-related discomfort (38.1% vs. 6.7%, p=0.031) compared to tunical lengthening procedures. Patient satisfaction was higher in the tunical lengthening group (80% vs. 66.7%, p=0.378). There was no significant difference in painful erection during penetrations or incapability of intercourse between the groups. The average length of hospital stay was longer for tunical shortening surgery compared to tunical lengthening surgery (1.27±0.27 vs. 1.79±0.39, p=0.023).
Conclusion: Tunical lengthening procedures demonstrated superior outcomes in terms of penile length and suture-related discomfort compared to tunical shortening procedures for the surgical management of PD. Patient satisfaction was also higher in the tunical lengthening group. Clinicians should consider various factors when selecting the appropriate surgical technique for PD, including penile length, the degree of penile curvature, and surgeon experience. Prospective randomized studies are needed to further validate these findings and assess long-term outcomes.
Numerical and experimental modeling of the behavior of flexible shell elements of structures
Authors: Dzyuba Anatoliy , Safronova Inha , Levitina Larysa 
Published: August 2023

This article is devoted to computer and experimental modeling of the behavior of flexible elements of shell structures, and the development of effective algorithms for solving emerging nonlinear boundary value problems of their calculation and optimization of parameters. At the same time, the probability of the results obtained using different approaches to the construction of a nonlinear theory is established. Their comparative analysis, error estimation, which in this case is given by calculation according to linear and corresponding nonlinear theories, is carried out. The results of calculated data and experimental studies of the behavior of real structural elements are compared.
The results of a comparative analysis of the application of two mathematical models of deformation of flexible shell elements, obtained by direct integration of boundary value problems of shell mechanics, by the finite element method and experimental research, are presented.
The problems of axisymmetric nonlinear bending of thin ring plates, corrugated membranes of a sinusoidal profile and bellows as a shell of rotation with a complex meridian shape are considered.
Using the necessary optimality conditions of the principle of maximum L. S. Pontryagin obtained the results of the optimal design of a flexible corrugated membrane with a sinusoidal profile of the highest sensitivity. The results are presented in the form of tables, photos and graphs.
Dynamic stability of a hemispherical shell with shape imperfections
Authors: Lizunov Petro , Lukianchenko Olga , Geraschenko Oleh , Kostina Olena 
Published: August 2023

The nonlinear dynamic analysis of imperfect hemispherical shell under pressure was executed. The finite element model of hemisphere in the software NASTRAN was built. The shell wall in the form of the three-cornered and four-cornered finite element net was presented. Shape imperfection as a lower buckling form (Buckling) of perfect hemispherical shell under action of static pressure was modelled. Value of imperfection amplitude was set proportionally to a shell wall thickness. Two boundary conditions in the form rigid and hinged supports on the nodes of lower edge of the shell were considered. Excitation as external pressure, which linearly depended on time and uniform distributed on elements of hemispherical shell was presented. The modal analysis of perfect hemisphere with different wall thicknesses and shell with modelled shape imperfections by the Lanczos method using computational procedure of task on natural vibrations (Normal Modes) was executed. The nonlinear dynamic analysis (Nonlinear Direct Transient) of imperfect hemispherical shell under pressure by N’yumark method was executed. Influence of modelled shape imperfections amplitude on the critical values of dynamic loading and appropriate deformation forms of shell with different boundary conditions were investigated.
It was discovered that a modelled imperfection in the form of a lower buckling form of perfect shell under static pressure in the modal and the dynamic analysis of hemisphere under the same type of the loading was effective. A significant influence of the amplitude of the shape imperfection on the critical values of the dynamic load (55 %) was observed. Also, in our opinion, the presented model of shape imperfection can be used to assess design reliability of the hemisphere under the action of dynamic loads using Bolotin probabilistic approach.
RESPON BEBERAPA VARIETAS UBI JALAR LOKAL SUMATERA BARAT DENGAN APLIKASI BEBERAPA JENIS PUPUK ORGANIK CAIR
Authors: Sembiring Ngakumalem , Sondang Yun , Anidarfi  
Published: August 2023

Ubi jalar termasuk komoditi pangan penghasil karbohidrat penting untuk mendukung ketahanan pangan nasional. Berbagai varietas ubi jalar telah dibudidayakan, namun produktivitas rata-rata masih di bawah varietas unggul. Tujuan penelitian adalah untuk mengetahui tanggap beberapa varietas ubi jalar lokal Sumatera Barat dengan aplikasi beberapa jenis POC. Pelaksanaan penelitian dari April sampai dengan Agustus 2019, berloksi di lahan Politani Payakumbuh. Perlakuan terdiri dari 2 faktor, yang disusun dalam Rancangan Acak Kelompok faktorial. Faktor I adalah 4 varietas lokal ubi jalar Sumatera Barat yang dikelompokkan berdasarkan warna daging umbi, yaitu V1= umbi ungu muda ; V2 = umbi ungu tua; V3 = umbi oranye; dan V4 = umbi putih dan faktor ke II adalah 3 pelakuan POC dan 1 kontrol, yaitu P0 = tanpa POC; P1 = POC MOL Buah; P2 = POC Sabut Kelapa; dan P3 = POC pabrikan, sehingga diperoleh 16 unit perlakuan dengan 3 kali ulangan. Hasil penelitian menunjukkan bahwa perlakuan varietas berpengaruh nyata terhadap pertumbuhan vegetatif (panjang batang dan jumlah cabang) sedangkan perlakuan POC tidak memberikan pengaruh nyata. Perlakuan varietas dan POC berpengaruh nyata terhadap pertumbuhan generatif. Perlakuan MOL buah memberikan pengaruh nyata dan meningkatkan bobot umbi/tanaman, berbeda tidak nyata dengan POC sabut kelapa dan POC pabrikan. Sedangkan perlakuan varietas memberikan pengaruh nyata terhadap jumlah dan bobot umbi/tanaman. Jumlah dan bobot umbi tertinggi terdapat pada varietas ubi jalar ungu tua, diikuti oleh ubi jalar putih, ubi jalar oranye, dan terendah pada ubi jalar ungu muda.
Faktor Keluarga Ibu Terhadap Rerata Berat Bayi Lahir Berdasarkan Karakteristik Rumah Tangga di Indonesia (Analisis Data Ifls 5)
Authors: Putra Onetusfifsi , Rimonda Rubi , Fadillah Mardi , Kusumawardani Eva Flourentina , Siahaan Perry Boy Chandra , Saputra Firman Firdauz , Paradhiba Meutia 
Published: August 2023

Salah satu indeks yang dapat menggambarkan maternal (ibu), kematian bayi dan tingkat kesejahteraan suatu masyarakat adalah Berat Bayi Lahir. Pada tahun 2013 UNICEF angka BBLR di Indonesia mencapai angka 10,2 persen. Penelitian ini bertujuan untuk efek interaksi antara karakteristik rumah tangga dengan lingkungan terhadap rata-rata berat bayi lahir di Indonesia. Sebuah study srossectional dilakukan dengan melakukan analisis data survei dari IFLS 5 di Indoensia. Variabel yang diukur adalah berat bayi lahir, kemiskinan, sanitasi, pekerjaan, dan pendidikan. Data di analisis secara univariat dan multivariat dengan regresi linear ganda. Hasil analsiis dalam penelitian ini didapatkan bahwa Pendidikan dan pekerjaan merupakan factor risiko terhadap rerata berat bayi lahir. Sedangkan pendidikan merupakan faktor dominan terhadap rata-rata berat bayi lahir pada keluarga. Oleh karena itu, perbaikan pendidikan merupakan salah satu upaya dalam memperbaiki dan mengoptimalkan bert bayi lahir di Indonesia.Kata Kunci: Berat badan lahir, pendidikan, status bekerja, faktor ibuOne of the indices that described of maternal mortality, infant mortality, and the welfare of a community was birth weight. In 2013, according to UNICEF that rate of low birth weight LBW in Indonesia was 10.2 percent. This study aimed to examine the effect of maternal factors like household and neighborhood characteristics on average birth weight in Indonesia. A cross-sectional study was conducted by analyzing survey data from IFLS 5 in Indonesia. Variables measured were birth weight, poverty, sanitation, anemia, working status, and education. Data was analyzed univariately and multivariately with multiple linear regression. The results of the analysis in this study found that education and occupation are risk factors for average birth weight, while education was the dominant factor for average birth weight in families. Therefore, improving education is one of the efforts in improving and optimizing the birth weight of babies in IndonesiaKeywords: Birth weight, education, working status, maternal
Analisis Penerapan Kesehatan dan Keselamatan Kerja (K3) dalam Upaya Pencegahan Penularan Virus Covid-19 di Tempat Kerja (Studi PT. Midas Multi Industri)
Authors: Sinaga Asina Br , Ginting Rapael , Ginting Johannes Bastira , Siahaan Perry Boy Chandra , Putra Onetusfifsi , Fadilah Mardi 
Published: August 2023

Penyakit Covid-19 menjadi bahaya kerja baru bagi pekerja, dalam penanggulangan bahaya penyebaran Covid-19 ditempat kerja pemerintah melalui Surat Edaran Menteri Ketenagakerjaan Nomor M/3/HK.04/III/2020, dan Surat Keputusan Menteri Kesehatan Republik Indonesia Nomor HK.01.07/MENKES/328/2020 mengarahkan agar adanya integrasi protokol kesehatan pencegahan Covid-19 ditempat kerja dengan K3 perusahaan. Dalam penerapan protokol kesehatan ditempat kerja masih ditemukan berbagai pelanggaran. Penelitian dilakukan dengan menggunakan metode penelitian kualitatif-deskriptif, tujuan penelitian ini adalah menggambarkan dan mengidentifikasi SMK3 dan pelaksanaan protokol kesehatan ditempat kerja PT. Midas Multi Industri. SMK3 dan program K3 PT. Midas Multi Industri sudah dirancang sesuai dengan protokol kesehatan pencegahan penyebaran Covid-19 ditempat kerja, pekerja yang melanggar beberapa aturan yang diberikan disebabkan tidak terbiasa dengan penetapan budaya baru dilingkungan kerja. PT. Midas Multi Industri perlu melakukan sosialisasi lebih mendalam kepada pekerja dan menetapkan sanksi terhadap pelanggaran aturan protokol kesehatan ditempat kerja.Kata kunci: SMK3, K3,Covid-19, Protokol KesehatanThe Covid-19 disease has become a new work hazard for workers, in overcoming the danger of spreading Covid-19 in the government's workplace through Circular Letter of the Minister of Manpower Number M/3/HK.04/III/2020, and Decree of the Minister of Health of the Republic of Indonesia Number HK.01.07 /MENKES/328/2020 directs the integration of the Covid-19 prevention health protocol in the workplace with the company's K3. In the application of health protocols in the workplace, various violations are still found. The study was conducted using qualitative-descriptive research methods, the purpose of this study was to describe and identify SMK3 and the implementation of health protocols in the workplace of PT. Midas Multi Industries. SMK3 and PT. Midas Multi Industries has been designed in accordance with health protocols to prevent the spread of Covid-19 in the workplace, workers who violate some of the given rules are not accustomed to establishing a new culture in the work environment. PT. Midas Multi Industries need to conduct more in-depth socialization to workers and set sanctions for violations of health protocol rules in the workplace. Keywords: SMK3, K3, Covid-19, Health Protocol.
Identifying underlying individuality across running, walking, and handwriting patterns with conditional cycle–consistent generative adversarial networks
Authors: Burdack Johannes , Giesselbach Sven , Simak Marvin L. , Ndiaye Mamadou L. , Marquardt Christian , Schöllhorn Wolfgang I. 
Published: August 2023

In recent years, the analysis of movement patterns has increasingly focused on the individuality of movements. After long speculations about weak individuality, strong individuality is now accepted, and the first situation–dependent fine structures within it are already identified. Methodologically, however, only signals of the same movements have been compared so far. The goal of this work is to detect cross-movement commonalities of individual walking, running, and handwriting patterns using data augmentation. A total of 17 healthy adults (35.8 ± 11.1 years, eight women and nine men) each performed 627.9 ± 129.0 walking strides, 962.9 ± 182.0 running strides, and 59.25 ± 1.8 handwritings. Using the conditional cycle-consistent generative adversarial network (CycleGAN), conditioned on the participant’s class, a pairwise transformation between the vertical ground reaction force during walking and running and the vertical pen pressure during handwriting was learned in the first step. In the second step, the original data of the respective movements were used to artificially generate the other movement data. In the third step, whether the artificially generated data could be correctly assigned to a person via classification using a support vector machine trained with original data of the movement was tested. The classification F1–score ranged from 46.8% for handwriting data generated from walking data to 98.9% for walking data generated from running data. Thus, cross–movement individual patterns could be identified. Therefore, the methodology presented in this study may help to enable cross–movement analysis and the artificial generation of larger amounts of data.
Biofabrication of novel silver and zinc oxide nanoparticles from Fusarium solani IOR 825 and their potential application in agriculture as biocontrol agents of phytopathogens, and seed germination and seedling growth promoters
Authors: Trzcińska-Wencel Joanna , Wypij Magdalena , Terzyk Artur P. , Rai Mahendra , Golińska Patrycja 
Published: August 2023

Introduction: Plant pathogenic microorganisms adversely affect the growth and yield of crops, which consequently leads to losses in food production. Metal-based nanoparticles (MNPs) can be a remedy to solve this problem.Methods: Novel silver nanoparticles (AgNPs) and zinc oxide nanoparticles (ZnONPs) were biosynthesized from Fusarium solani IOR 825 and characterized using Dynamic Light Scattering (DLS), Fourier Transform Infrared (FTIR) spectroscopy, Transmission Electron Microscopy (TEM), X-ray diffraction (XRD) and measurement of Zeta potential. Antibacterial activity of NPs was evaluated against four plant pathogenic strains by determination of the minimum inhibitory (MIC) and biocidal concentrations (MBC). Micro-broth dilution method and poisoned food technique were used to assess antifungal activity of NPs against a set of plant pathogens. Effect of nanopriming with both types of MNPs on maize seed germination and seedlings growth was evaluated at a concentration range of 1–256 μg mL-1.Results: Mycosynthesis of MNPs provided small (8.27 nm), spherical and stable (zeta potential of −17.08 mV) AgNPs with good crystallinity. Similarly, ZnONPs synthesized by using two different methods (ZnONPs(1) and ZnONPs(2)) were larger in size (117.79 and 175.12 nm, respectively) with Zeta potential at −9.39 and −21.81 mV, respectively. The FTIR spectra showed the functional groups (hydroxyl, amino, and carboxyl) of the capping molecules on the surface of MNPs. The values of MIC and MBC of AgNPs against bacteria ranged from 8 to 256 μg mL-1 and from 512 to 1024 μg mL-1, respectively. Both types of ZnONPs displayed antibacterial activity at 256–1024 μg mL-1 (MIC) and 512–2048 μg mL-1 (MBC), but in the concentration range tested, they revealed no activity against Pectobacterium carotovorum. Moreover, AgNPs and ZnONPs inhibited the mycelial growth of Alternaria alternata, Fusarium culmorum, Fusarium oxysporum, Phoma lingam, and Sclerotinia sclerotiorum. MIC and MFC values of AgNPs ranged from 16–128 and 16–2048 μg mL -1, respectively. ZnONPs showed antifungal activity with MIC and MFC values of 128–2048 μg mL-1 and 256–2048 μg mL-1, respectively. The AgNPs at a concentration of ≥32 μg mL-1 revealed sterilization effect on maize seeds while ZnONPs demonstrated stimulatory effect on seedlings growth at concentrations of ≥16 μg mL-1 by improving the fresh and dry biomass production by 24% and 18%–19%, respectively.Discussion: AgNPs and ZnONPs mycosynthesized from F. solani IOR 825 could be applied in agriculture to prevent the spread of pathogens. However, further toxicity assays should be performed before field evaluation. In view of the potential of ZnONPs to stimulate plant growth, they could be crucial in increasing crop production from the perspective of current food assurance problems.
Appraisal of geothermal potentials of some parts of the Abakaliki Anticlinorium and adjoining areas (Southeast Nigeria) using magnetic data
Authors: Eldosouky Ahmed M. , Ekwok Stephen E. , Ben Ubong C. , Ulem Christian A. , Abdelrahman Kamal , Gomez-Ortiz David , Akpan Anthony E. , George Anthony Michael , Pham Luan Thanh 
Published: August 2023

The Abakaliki Anticlinorium and its adjoining areas were appraised with the object of delineating high geothermal potential zones. Spectral depth analysis involving an improved centroid technique was used to analyze high-quality magnetic data. The obtained geothermal parameters were gridded to map various geothermal features within the investigated area. The obtained results varied from 4.99–9.35 km, 2.31–6.15 km, 6.11–16.28 km, 35.63°C–94.93°C/km, and 89.07–237.32 mW/m2 for centroid depth, top depth, Curie point depth, geothermal gradient, and heat flow values, respectively. The delineated semioval structure in the central zone of the investigated region characterized by a shallow Curie point depth (&lt; 8.5 km) correlates with the location of the high-heat flow (&gt;191.0 mW/m2) and geothermal gradient (&gt;74.0°C/km) region. The high geothermal potential of the region is triggered by the massive post-rift tectonic event of the Santonian period related to the Abakaliki Anticlinorium. Further geophysical exploration programs should be carried out before exploitation activities at anomalous geothermal regions.
Research on power system fault prediction based on GA-CNN-BiGRU
Authors: Zhang Daohua , Jin Xinxin , Shi Piao 
Published: August 2023

Introduction: This paper proposes a power system fault prediction method that utilizes a GA-CNN-BiGRU model. The model combines a genetic algorithm (GA), a convolutional neural network (CNN), and a bi-directional gated recurrent unit network Bidirectional Gated Recurrent Unit to accurately predict and analyze power system faults.Methods: The proposed model employs a genetic algorithm for structural search and parameter tuning, optimizing the model structure. The CNN is used for feature extraction, while the bi-directional gated recurrent unit network is used for sequence modeling. This approach captures the correlations and dependencies in time series data and effectively improves the prediction accuracy and generalization ability of the model.Results and Discussion: Experimental validation shows that the proposed method outperforms traditional and other deep learning-based methods on multiple data sets in terms of prediction accuracy and generalization ability. The method can effectively predict and analyze power system faults, providing crucial support and aid for the operation and management of power systems.