bluuebunny/crossref_metadata_2025 huggingface dataset:
Transformations of 3,7-interphenylene 11-deoxyprostanoid formyl precursors in the acidic medium
Authors: Pashkovsky F. S. , Korneev D. I. , Lakhvich F. A.
Published: December 2021

It has been shown that the formyl precursors of 3,7-interphenylene 11-deoxyprostanoids, formed during acidic hydrolysis of the corresponding acetals, can undergo isomerization (disproportionation) in the acidic medium to give 2-(arylalkyl)-3-(hydroxymethyl)cyclopent-2-ene-1-ones – the synthons for prostanoids and phytoprostanes of the series B. Acetal precursors of 3,7-interphenylene 11-deoxyprostaglandin analogues with electron-donating alkoxy substituent in position 3′ of the aromatic fragment in the α-chain under similar conditions hydrolyze with the formation of formyl derivatives that spontaneously cyclize to produce 2,3,4,9-tetrahydro-1H-cyclopenta[b]naphthalene-1-ones.
Analysis of the cellular composition of the native auto-transplantation mixture used for plastics of bone tissue defects
Authors: Chueshova N. V. , Cheshik I. A. , Nadyrov E. A. , Nikolaev V. I. , Kirilenko S. I. , Rozhin V. V. , Kondrachuk A. N. , Serdyuchenko N. S.
Published: December 2021

The cell composition of native transplant autosmes (NTA) used for bone plastics was studied. The histological examination showed the fragments of bone beams with preserved osteoblasts, the foci of myeloid and lymphoid hematopoiesis and the fibrin deposits, which suggested the presence of MMSCs. Immunophenotyping of the NTA cell population revealed a high level of expression of the surface markers CD105, CD73, and CD90 characteristic for MMSC. DNA-flow cytometry of the bone dust confirmed almost complete preservation of graft viability on the 3rd day of culturing (97.7 % of live cells). The data of this study confirm the presence of the osteogenic, osteoinductive, and osteoconductive properties of the bone dust and emphasize the importance of a further study of this-type bone graft for use in surgical interventions.
Ultimate state criteria and strength characteristics of the rock massifs being undermined repeatedly
Authors: Chizhik S. A. , Zhuravkov M. A. , Petrovskiy A. B. , Prushak V. Ya. , Puzanov D. A.
Published: December 2021

Methodological approaches to the selection of ultimate state criteria and strength characteristics of the repeatedly undermined rock massifs were developed. These approaches were designed to provide parametric support to the geomechanical modelling of the massif stress-strain state and the mining systems of the Starobin potash deposit mine fields planned for the additional mining of the mineral reserves left. It was established that a complex criterion must be used to study the massif ultimate state. Determination of such criterion can be carried out using the developed approaches. The first approach is to select several criteria that evaluate the massif ultimate state by certain types of the massif stress-strain state. These criteria are the following: the criterion of the maximum normal stresses, criterion of the maximum linear strains, the criterion of the maximum shear stresses and the Coulomb–Mohr failure criterion. The second approach is to construct an integrated failure state criterion for materials whose ultimate tensile and compressive stresses differ significantly. In this case, parameters characterizing the type of stress state and properties of the material are introduced. These parameters together determine the destruction character – tear or shear. To describe the rocks behavior in the extreme strength stage of deformation, it is proposed to apply deformation theory of strength using the developed strain failure criterion. When calculating the strength characteristics of the repeatedly undermined rock massif, it is recommended to use a structural attenuation coefficient as the product of several factors, taking into account various types of disturbances in the primary undermined massif and the time factor. The Coulomb–Mohr strength condition is recommended to be used taking into account the composite structural attenuation coefficient. Dependencies have been developed to describe the change in the strength characteristics of rocks in the undermined massif, considering the attenuation coefficient.
Catalytic properties of a composite material based on belarusian dolomites in relation to the decomposition of pyrolysis tar
Authors: Vasilevich S. V. , Malko M. V. , Degterov D. V. , Asadchyi A. N.
Published: December 2021

The paper discusses results of an experimental study of the thermal decomposition of pyrolysis tar in a homogeneous process and in the presence of a catalyst. Experiments on thermal decomposition of pyrolysis tar were carried out under isothermal conditions in a laboratory setup at temperatures of 300, 400, 450 and 500 °C. The rate of the homogeneous process of thermal decomposition of tar and maximal degrees of decomposition were determined. According to the data of this work, the activation energy of the homogeneous process was 320 kJ/mol. It was found that the rate of thermal decomposition of the tar increases in the case of introducing samples of natural dolomites into the reaction zone, as well as a composite material based on them. This increase is due to the occurrence of a heterogeneous catalytic decomposition reaction of the pyrolysis tar. The apparent activation energy of this process was 210 kJ/mol (when using dolomites) and 202 kJ/mol (when using composites). It was noted that the composite material has significantly more favorable mechanical properties than dolomite. Based on the established data, it was concluded that the creation of composite catalysts for the thermal decomposition of heavy hydrocarbons formed in the processes of thermochemical conversion of biomass is promising.
Dynamic range reduction of infrared images based on adaptive equalization, stretch and compression of histogram
Authors: Rudikov S. I. , Tsviatkou V. Yu. , Shkadarevich A. P.
Published: December 2021

The problem of reducing the dynamic range and improving the quality of infrared (IR) images with a wide dynamic range for their display on a liquid crystal matrix with 8-bit pixels is considered. To solve this problem in optoelectronic devices in real time, block algorithms based on local equalization of the histogram are widely used, taking into account their relatively low computational complexity and the possibility of taking into account local features of the brightness distribution. The basic adaptive histogram equalization algorithm provides reasonably high image quality after conversion, but may result in excessive contrast for some types of images. In a modified algorithm of adaptive histogram equalization, the contrast is limited by a threshold by truncating local maxima at the edges of the histogram. This leads, however, to a deterioration in other indicators of image quality. This disadvantage is inherent in many algorithms of local histogram equalization, along with limited control over the characteristics of image reproduction quality. To improve the quality and expand the control interval for the characteristics of the reproduction of infrared images, the article proposes an algorithm for double reduction of the dynamic range of the image with intermediate control of the shape of its histogram. This algorithm performs: preliminary reduction of the dynamic range of the image based on adaptive equalization of the histogram, control of the shape of the histogram based on its linear or nonlinear compression, linear stretching of its central part and linear stretching (compression) of its lateral parts, final reduction of the dynamic range based on linear compression of the entire histograms. The characteristics of the proposed algorithm are compared with the characteristics of known algorithms for reducing the dynamic range and improving the image quality. The dependences of the characteristics of the quality of image reproduction after a decrease in their dynamic range on the control parameters of the proposed algorithm and recommendations for their choice taking into account the computational complexity are given.
MANAJEMEN USAHA DAN KOPERASI PADA UMKM DAN PENGRAJIN GERABAH DIDESA BANYUMULEK KECAMATAN KEDIRI KABUPATEN LOMBOK BARAT
Authors: Alwi Muhammad , Gde Bisma I Dewa , Kusuma Negara Iwan , Astuti Endang
Published: December 2021

Desa Banyumulek memiliki hasil kerajinan tangan yang sudah terkenal dan merupakan salah satu sentra industri kerajinan gerabah yang ada di pulau Lombok. Berbagai jenis kerajinan gerabah yang dibuat di desa ini seperti teko, tong sampah mewah, gentong besar, aneka guci, mangkuk buah, hiasan dinding dan sebagainya. Namun demikian masih lemah dalam manajemen usaha dan koperasi. Kegiatan ini dilaksanakan pada hari Selasa tanggal 12 Oktober 2021 di Aula Desa Banyumulek. Tujuan kegiatan ini adalah memberikan pengetahuan kepada UMKM dan pengrajin Gerabah tentang manajemen usaha dan koperasi. Metode yang digunakan untuk mencapai tujuan ini adalah dengan ceramah dan Focus Group Discussion (FGD) dengan materi manajemen usaha dan koperasi. Hasil dari kegiatan ini adalah UMKM dan pengrajin gerabah sudah dapat mengetahui pentingnya pengetahuan manajemen usaha agar usaha dapat maju dan berkembang kembali. Namun demikian saat ini terjadi kemunduran produksi gerabah yang diakibatkan oleh menurunnya wisatawan yang berkunjung sampai sekarang dan tingginya harga gerabah yang belum mempunyai hak paten, hal ini terjadi karena ketidakamanan dan ketidaknyamananan para pengunjung baik domestik maupun wisatawan Manca Negara. Di samping juga ulah dari pada guide yang meminta 50% sampai dengan 60% insentip dari harga jual gerabah kepada pemilik artshop apabila membawa wisatawan belanja pada artshop mereka, akibatnya para pemilik artshop membeli gerabah kepada pengrajin dengan harga yang murah. Koperasi yang ada menjadi macet akibat ketidakjujuran para pengurus sehingga para pengrajin tidak berniat untuk menjadi anggota koperasi. Disarankan kepada UMKM dan Pengrajin gerabah agar dapat mengelola usaha mereka dengan baik dan masuk menjadi anggota koperasi. Pengurus Koperasi harus jujur dalam menjalankan usaha koperasi sehingga koperasi dapat berkembang dan maju.
WHAT FACTORS AFFECT STUDENTS’ WHISTLEBLOWING INTENTIONS?
Authors: Pujiningsih Sri , Nuraini Rafita Yayang
Published: December 2021

Accounting students' courageous behavior in exposing fraud or violation is critical for their future careers as accountants and other professions. This paper attempts to explain the variables that influence whistleblowing intentions through the Theory of Planned Behavior (TPB) lens. This study used a survey to gather data from 154 accounting students. The effect of attitude variables, subjective norms, and behavioral control on accounting students' whistleblowing intentions was examined using a regression test. The regression analysis indicated that all three variables influenced whistleblowing intentions positively. Among the three variables, attitude towards behavior has the biggest impact on whistleblowing intentions, at 37%. This could be interpreted as the need of building accounting students' attitude character to encourage whistleblowing action. Accounting lecturers, as indicators of student subjective norms, play a critical role in developing these characters. This study has theoretically confirmed the applicability of the TPB. The findings of this study assist policymakers in developing a university-based whistleblowing system.
BAGAIMANA KINERJA USAHA MENENGAH DI MASA PANDEMI COVID-19?
Authors: Melania Lintang Kenisah , Yulina  , Cendra
Published: December 2021

Pandemi Covid-19 menyebabkan tingginya ketidakpastian lingkungan yang terjadi. Oleh karena itu, untuk meminimalisir kondisi ketidakpastian tersebut, penggunaan akuntansi manajemen strategis menjadi penting dalam rangka meningkatkan kinerja organisasi. Penelitian ini bertujuan untuk menganalisis faktor-faktor yang mempengaruhi kinerja usaha menengah, yaitu faktor ketidakpastian lingkungan dan penggunaan akuntansi manajemen strategis. Faktor-faktor tersebut diuji secara empiris menggunakan pendekatan kuantitatif dengan jenis penelitian penjelasan. Data pada penelitian ini merupakan data primer yang didapatkan dari kuesioner dengan target responden akuntan manajemen di usaha menengah yang terletak di Provinsi Banten. Teknik analisis data dilakukan dengan model persamaan struktural (SEM) - Lisrel. Hasil dari penelitian ini menunjukkan bahwa ketidakpastian lingkungan berpengaruh positif terhadap kinerja usaha menengah, tetapi tidak berpengaruh terhadap penggunaan akuntansi manajemen strategis. Sementara itu, penggunaan akuntansi manajemen strategis berpengaruh positif terhadap kinerja usaha menengah. Implikasi  penelitian ini memberikan  rekomendasi kebijakan bagi usaha menengah dalam rangka meningkatkan kinerja dan menjaga keberlangsungan usaha dalam masa pandemi Covid-19.
PENGARUH LEVERAGE, CAPITAL INTENSITY, KOMISARIS INDEPENDEN DAN KEPEMILIKAN INSTITUSIONAL TERHADAP TAX AVOIDANCE
Authors: Dewi Sevi Lestya , Oktaviani Rachmawati Meita
Published: December 2021

Penelitian ini bertujuan untuk menganalisis pengaruh leverage, capital intensity, komisaris independen, dan kepemilikan institusional terhadap tax avoidance. Penelitian ini termasuk penelitian kuantitatif dengan menggunakan data sekunder yang diperoleh dari laporan tahunan perusahaan. Populasi dari penelitian ini adalah perusahaan manufaktur yang terdaftar di Bursa Efek Indonesia (BEI) tahun 2016-2020. Sebanyak 75 sampel dipilih dengan metode purposive sampling, dan dianalisis menggunakan regresi data panel. Hasil penelitian menunjukkan bahwa komisaris independen berpengaruh signifikan negatif terhadap tax avoidance, sedangkan leverage, capital intensity, dan kepemilikan institusional tidak berpengaruh signifikan terhadap tax avoidance. Hasil penelitian mengimplikasikan peran pengawasan dan monitoring dalam menerapkan perencanaan pajak perusahaan yang optimal untuk menurunkan tingkat tax avoidance.
MEKANISME CORPORATE GOVERNANCE DAN RISK DISCLOSURES: STUDI PADA ANNUAL REPORT BANK DEVISA DI INDONESIA
Authors: Dosinta Nina Febriana
Published: December 2021

Otoritas Otoritas Jasa Keuangan telah menyusun Roadmap Keuangan Berkelanjutan dalam jangka panjang 2020-2024 yang menekankan pada integrasi risk management, corporate governance, penilaian tingkat kesehatan bank dan keuangan berkelanjutan. Penelitian ini bertujuan menguji pengaruh mekanisme corporate governance terhadap risk disclosures pada 11 bank devisa yang terdaftar di Bursa Efek Indonesia dalam era Roadmap Keuangan Berkelanjutan dengan menggunakan analisis regresi berganda data panel Generalized Least Square. Metode content analysis digunakan pada annual report periode 2015-2020 untuk menilai risk disclosures. Hasil penelitian mengungkapkan bahwa frekuensi rapat dewan komisaris, ukuran komite audit, dan frekuensi rapat komite audit sebagai proksi dari mekanisme corporate governance berpengaruh signifikan terhadap risk disclosures. Temuan penelitian ini mengimplikasikan bahwa hadirnya struktur pengawasan dalam suatu perusahaan berperan penting dalam mendeteksi risk disclosures.
PENINGKATAN KETERAMPILAN GURU MA AL-AZIZIYAH PUTERI KAPEK, GUNUNGSARI DALAM MENGEMBANGKAN INSTRUMEN ASESMEN SIKAP DAN KETERAMPILAN HASIL BELAJAR
Authors: Setiadi Dadi , Wilian Sudirman , Sridana I Nyoman
Published: December 2021

Tujuan pengabdian ini untuk meningkatkan kapabilitas guru di MA Al Aziziyah puteri dalam  mengembangkan kemampuan menyusun instrumen untuk mengukur sikap dan keterampilan peserta didik. Metode yang digunakan dalam pengabdian kepada masyarakat  ini adalah melalui pelatihan atau workshop yang lebih berbasis pada praktek  langsung menyusun instrumen yang mengacu pada dasar yuridis, studi literatur, dan analisis kebutuhan guru di lingkungan MA Al Aziziyah Puteri terkait dengan penyusunan instrumen penilaian sikap dan keterampilan. Pelaksanaan pengabdian dilakukan  dengan tahapan  sebagai berikut : Studi literatur, menganalisis kebutuhan guru, Pengukuran Kemampuan Awal Guru, Mendisain Kurikulum Pelatihan, Pelaksanaan Pelatihan berupa kajian teori, Praktek Analisis tagihan keterampilan dan sikap pada dokumen kurikulum dan  Penyusunan instrument asesmen keterampilan dan sikap. Pemantauan dan bimbingan di lapangan, Evaluasi Hasil Pelaksanaan Workshop dan, Penyusunan Laporan Pengabdian., Populasi adalah semua guru MA Al Aziziyah puteri, sampel yang digunakan sebanyak 40 guru. Hasil menunjukan semua peserta sudah mamahami dan terampil dalam mendisain instrumen untuk penilaian sikap dan keterampilan sesuai dengan tagihan pada kompetensi dasar dari KD 3 dan KD 4 yang terdapat pada kurikulum MA. Namun demikian para peserta wrokshop masih memerlukan latihan penyusunan instrumen tersebut khususnya dalam penentuan indikator sikap, keterampilan sampai menyusun instrumennya yang akurat sesuai dengan tagihan
Penyuluhan Tentang Pengembangan Literasi Baca Dan Numerasi Melalui Media Pop Up Box di Sekolah Dasar Se-Kecamatan Praya Lombok Tengah
Authors: Gunayasa Ida Bagus Kade , Zain Moh. Irawan , Wardani Ketut Sri Kusuma , Astria Fitri Puji
Published: December 2021

In this era of modernization, the growth of reading and numeracy literacy is expected and required. Nevertheless, significant training is required to use pop-up box media to promote reading and numeracy literacy in a novel way. This community service activity takes the form of counseling and training, which can be divided into two categories: public lectures and guided exercises. Preparation, supplying tools and materials, implementation, and assessment are the processes that will be carried out in this activity in detail. Based on the outcomes of the activities, the implementation of this counseling activity proceeded successfully, and the activities were completed according to the timetable. Preparation, provision of tools and resources, implementation, and evaluation all went off without a hitch. The community service team supplied a response questionnaire relating to the activity's implementation to gauge the success of the activity, with the results of the activity's execution being excellent.
Characterization of PVA-Enzyme Coated Indicator Electrodes GA coated again with PVC-KTpClPB-o-NPOE UV-Vis analysis, variable signal analysis, sensor sensitivity and SEM-EDS
Authors: S Abd Hakim
Published: December 2021

This study aims to characterize the phosphate buffer and urease enzymes through UV-Vis and SEM-EDS absorbance spectra using tungsten as an indicator electrode. The method used is a potentiometric biosensor with urease enzyme immobilization technique for urea analyte. A small detection range of 10-5-10-4M has been studied with PVA-enzyme coated indicator electrodes coated with PVC-KTpClPB. On this basis, the researchers increased the detection range by analyzing glutaraldehyde (GA) mixed with PVA-enzyme and o-NPOE mixed with PVC-KTpClPB. The best results of GA mixed PVA-enzyme at GA2.9% UV-Visible analysis. The best results were PVA-enzyme coated indicator electrodes coated with GA coated again with PVC-KTpClPB-o-NPOE SEM-EDS analysis on PVA-enzyme samples 3x coated with GA 1x and PVC-KTpClPB-o-NPOE 1x with o-NPOE variation of 61% and 66%.
The Effects of NLR on the Diagnosis and Pharmacological Management of Brain Abscesses
Authors: ÇALIŞKAN Tezcan , YİLMAZ Ibrahim , HACIOGLU Fatma , ERSOZ Emel , DOĞAN Mustafa , KARAARSLAN Numan
Published: December 2021

Aim: The present study aims to examine the effectiveness of the neutrophil-to-lymphocyte ratio in the treatment and diagnosis of patients with brain abscesses.
Method: In this retrospective study, radiological, neurological, and surgical data obtained from the medical records of healthy volunteers (n = 10) who presented to the hospital for check-ups and patients with brain abscesses who were treated (n = 10) were evaluated statistically. Alpha significance value was accepted as <0.05.
Results: Comparisons between groups revealed that the erythrocyte sedimentation rate, C-reactive protein, leukocyte, and neutrophil values were statistically significant (P <0.05) while lymphocyte value was not statistically significant (P >0.05). The preoperative neutrophil-to-lymphocyte ratio in cases diagnosed with brain abscesses showed statistical significance compared to that in the healthy volunteers (P <0.05) and the neutrophil-to-lymphocyte ratio increased 3.31-fold in the study group compared to the healthy volunteers.
Conclusion: A strong positive strong relationship between the neutrophil-to-lymphocyte ratio and abscess size (r = 0.662; P = 0.037) was observed. An increased neutrophil-to-lymphocyte ratio may serve as an early warning signal of brain abscesses.
Keywords: Antibiotic treatment; brain abscess; low-cost diagnosis method; magnetic resonance image; neutrophil-to-lymphocyte ratio.
Survey and revision of leaf miners to some plants from different localities of Iraq
Authors: Hanaa H Al-Saffar  , Razzaq Shalan Augul  , Zainab Abid Aun Ali
Published: December 2021

This investigation showed (31) species belonging to (15) genera under (five) families and two orders. The leafminers Dipter families (Agromozidae, Anthomyiidae, Drosophilidae), Agromyzid flies is the highest level of investigated many host plants, but other families have lowest host plants. The synonyms of species were provided from GBIF scarlet's. The date and localities of sampling collection were recorded.
Amelioration of altered adipokines expression and serine/threonine phosphorylation of IRS1 in alloxan-induced diabetes by Potentilla fulgens and its phytochemical constituents
Authors: Shelareen E Sunn  , Donkupar Syiem  , Careen Liza Pakyntein
Published: December 2021

The present study is aimed at investigating the modulation of serine/threonine phosphorylation of IRS1 and the gene expression oftotal IRS1 and adipokines including TNF-α, IL-6 and adiponectin by the plant Potentilla fulgens and its phytochemical constituents catechin and (-)-epicatechin. Alloxan-induced diabetic mice with a two-to three-fold increase in their blood glucose levels were taken for the study. The level of protein expression of total (tIRS1), tyrosine (pIRS1), and serine phosphorylated IRS1 (pIRS1 ser307) was analysed by western blot, and the gene expression level of tIRS1, IL-6, TNF-α, and adiponectin was analysed by real-time PCR. Since evidences strongly suggest that adiponectin, TNF-α, and IL-6 are implicated in insulin resistance and type 2 diabetes, therefore these three adipokines have been targeted in our study with an aim to investigate the anti-inflammatory and antidiabetic effects of our plant Potentillafulgens(PF) andits phytochemicals. The results strongly demonstrates the capability of PF and its phytochemicals to modulate the ser/thr phosphorylation state of IRS1 by downregulating the serine 307 phosphorylation while simultaneously upregulating the tyrosine phosphorylation of IRS1. The results also indicate the ability of the same to alleviate inflammation in alloxan induced diabetes by modulating the expression of the insulin sensitizing hormone adiponectin and the pro-inflammatory cytokines L-6 and TNF-α.
Evaluación de las actitudes hacia la estadística de maestros en formación
Authors: Navarro-Asencio Enrique , Asensio-Muñoz Inmaculada , Arroyo-Resino Delia , Ruiz-De Miguel Covadonga
Published: December 2021

La evaluación de las actitudes hacia la estadística de los futuros profesores alcanza interés por la importancia que la formación en esta disciplina tiene en la sociedad actual, para la ciudadanía en general, y, específicamente, por su relación con la alfabetización científica de los maestros. Dado que un elemento básico en la evaluación es que se apoye en medidas válidas y fiables, el objetivo final del presente trabajo es fundamentalmente métrico y consiste en obtener evidencias de consistencia y validez estructural y criterial de la Escala de Actitudes hacia la Estadística (EAE), que se aplica a 542 estudiantes de los grados de Maestro en Educación Primaria e Infantil. Después de describir al colectivo estudiado, se aborda el constructo desde un enfoque multivariado adecuado para datos ordinales, con análisis factorial confirmatorio (ULSMV) y árboles de decisión (CHAID y CART). Los resultados indican que los estudiantes consultados no tienen unas actitudes muy positivas y consideran que su manejo de la estadística es insuficiente para realizar investigación, pero muestran interés por estar actualizados y poder discriminar entre lo cierto y lo falso. Tras evaluar once modelos de medida, se concluye aportando evidencias de la convergencia y consistencia de un constructo con cinco dimensiones y 24 ítems, con índices de ajuste aceptables en este colectivo. Además, se evidencia la utilidad de los ítems de la EAE para predecir los criterios utilizados, autoevaluación del desempeño e indicadores de la importancia que los futuros maestros otorgan a la ciencia y a la investigación en su profesión.
Validación de la Versión Española de la Escala de Compromiso Académico para Educación Primaria
Authors: Morcillo-Martínez Antonio , Infantes-Paniagua Álvaro , García-Notario Andrés , Contreras-Jordán Onofre Ricardo
Published: December 2021

El interés por el estudio del compromiso académico del estudiante se encuentra actualmente en auge dentro del ámbito de la investigación educativa. Existe un consenso en la literatura científica que lo considera un constructo multifacético conformado por tres dimensiones: compromiso conductual, afectivo/emocional y cognitivo; aunque han surgido otras voces que defienden la inclusión de un cuarto elemento: el compromiso agéntico. A pesar de los avances conseguidos a nivel internacional, en España se carece de instrumentos válidos para su medición durante la Educación Primaria. Por tanto, el objetivo del presente estudio se centró en realizar una validación y adaptación transcultural al contexto español de dos importantes instrumentos de medida del compromiso académico para Educación Primaria. Tras seguir un proceso de adaptación, el instrumento se administró a una muestra de 527 estudiantes (54.3% chicos, 45.7% chicas) de 3º a 6º de Educación Primaria de seis centros educativos de la provincia de Albacete (España). Se realizaron análisis factoriales confirmatorios, en base a diferentes modelos plausibles para obtener la estructura factorial más adecuada, y análisis de fiabilidad. Los resultados revelaron que los modelos que agrupaban al compromiso agéntico de manera separada frente a las otras tres dimensiones alcanzaban mejores niveles de ajuste, siendo esta la opción más adecuada. Se constata que el instrumento resultante, Escala de Compromiso Académico para alumnado de Educación Primaria, es válido y fiable para la medición de este constructo en alumnado español escolarizado entre 3º y 6º de Educación Primaria.
Öğretmenlik mesleğinin itibarı ile ilgili öğretmen görüşleri
Authors: ERTAN KANTOS Züleyha
Published: December 2021

Bu araştırma, öğretmenlik mesleğinin itibarını öğretmen görüşlerine göre ortaya koymayı amaçlamaktadır. Araştırma nitel araştırma yaklaşımının bir türü olan betimleyici fenomenolojik desene göre tasarlanmıştır. Araştırmanın çalışma grubunu Ankara, Hatay, Denizli, Malatya, Erzurum, Erzincan, Kocaeli, Ordu illerinde görev yapan toplam 50 sınıf ve branş öğretmeni oluşturmaktadır. Veriler yarı yapılandırılmış görüşme formu ile toplanmıştır. Elde edilen veriler betimsel ve içerik analiz tekniği ile çözümlenmiştir. Bulguların analizi sonucunda; bir mesleğin saygınlık faktörleri, öğretmenlik mesleğinin toplumsal itibarı, öğretmenlik mesleğine itibar sağlayıcılar ve öğretmenlik mesleğinin itibarını artırıcılar ana temaları oluşturulmuştur. Araştırma sonucunda öğretmenlik mesleğinin itibarının toplum nazarında düşük olduğu, meslek itibarının yüksek olmasını belirleyen en önemli etmenlerin başında toplumun o mesleğe bakış açısı ve mesleğe verdiği değer olduğu tespit edilmiştir. Ayrıca, öğretmenlik mesleğinin itibarının düşük olmasının sebepleri arasında ekonomik yetersizlik, özlük hakların yetersizliği, politikacıların yanlış tutumu, medyada yer alan olumsuz haberler, mesleki sendikaların daha çok siyası tavırla hareket etmeleri, öğretmen hakları konusunda birlik olmamaları sonuçlarına ulaşılmıştır. Öğretmenlik mesleğinin itibarını artırmak için sendikalar ortak hareket etmelidirler. Milli Eğitim Bakanlığı ise öğretmenlerin özlük, sosyal ve ekonomik haklarında iyileştirici politikalar geliştirmelidir.
On entire functions from the Laguerre-Polya I class with non-monotonic second quotients of Taylor coefficients
Authors: Nguyen T. H. , Vishnyakova A.
Published: December 2021

For an entire function $f(z) = \sum_{k=0}^\infty a_k z^k, a_k>0,$ we define its second quotients of Taylor coefficients as $q_k (f):= \frac{a_{k-1}^2}{a_{k-2}a_k}, k \geq 2.$ In the present paper, we study entire functions of order zerowith non-monotonic second quotients of Taylor coefficients. We consider those entire functions for which the even-indexed quotients are all equal and the odd-indexed ones are all equal:$q_{2k} = a>1$ and $q_{2k+1} = b>1$ for all $k \in \mathbb{N}.$We obtain necessary and sufficient conditions under which such functions belong to the Laguerre-P\'olya I class or, in our case, have only real negative zeros. In addition, we illustrate their relation to the partial theta function.
Point-wise estimates for the derivative of algebraic polynomials
Authors: Savchuk A. V.
Published: December 2021

We give a sufficient condition on coefficients $a_k$ of an algebraic polynomial $P(z)=\sum\limits_{k=0}^{n}a_kz^k$, $a_n\not=0,$ such that the pointwise Bernstein inequality $|P'(z)|\le n|P(z)|$ is true for all $z,\ |z|\le 1$.
Developing a methodology for assessing the risk of hostile takeover of a motor transport enterprise and measures to prevent it
Authors: Nesterenko Valentyna , Chevychelova Olena
Published: December 2021

Problem. Mergers and acquisitions are traditional processes of redistribution of property rights in a market economy. Mergers are often used by companies to gain control over larger market segments and increase performance efficiency. The acquisition process is not always desirable for the target company and is often used to establish control over its assets. Thus, the problems of assessing the risk of hostile takeover of the enterprise and its prevention are extremely relevant at the current stage, especially in the transport sector of Ukraine. Goal. The goal of the work is to develop the methodology for assessing the risk of hostile takeover of a motor transport enterprise and suggest methods for preventing its occurrence. Methodology. During the study, the following research methods have been used: analysis and synthesis, logical analysis. Information resources of the study are electronic information resources and periodic publications. Results. The risk of hostile takeover of an enterprise is the probability that the enterprise will become the takeover target through the legal actions and methods taken by the acquirer, but the acquisition procedure itself is against the wishes of the target’s board. The list of factors that determine the attractiveness of the potential acquisition target includes: the attractiveness of the enterprise in terms of its financial results and performance, the enterprise is not public, it occupies a considerable market segment, the enterprise operates as a joint-stock company, it is attractive in terms of further resale of its assets, the prospects of the industry in which the enterprise operates. According to the results of the studies assessing the risk level of hostile takeover of the group of motor transport enterprises, it has been revealed that 45% of enterprises are in the medium risk group. The following list of measures aimed at defending motor transport enterprises against hostile takeovers has been developed: the formation of optimal share capital structure; share consolidation when the majority shareholder holds the controlling interest; carrying out a sound dividend policy, the continuous monitoring of amounts and maturity dates of accounts payable, preventing the risk of arousing the counterparties’ interest in the resale of debt obligations of the enterprise to others. Originality. The methodology for assessing the risk of hostile takeover of a motor transport enterprise and reasonable measures to prevent its occurrence have been proposed. Practical value. The proposed recommendations can be used by the owners and management of motor transport enterprises to build an effective system for preventing potential hostile takeovers.
MAKING MANAGEMENT DECISIONS OF THE ELECTRIC POWER SYSTEM USING THE PARACONSISTENCY LOGICAL MODEL OF THE EXPERT SYSTEM (PESPAL2V)
Authors: Porubay Oksana
Published: December 2021

This article describes an expert system that is designed and developed for a certain and limited application of human knowledge. Equipped with an information base, it is able to make decisions based on reasonable knowledge. At the same time, the algorithms from which the computational program of the expert system consist, represent knowledge from the area they should analyze and help solve problems.
USING WAVELETS WITH A RECTANGULAR AMPLITUDE-FREQUENCY RESPONSE TO FILTER SIGNALS
Authors: Semenov Vladimir , Shurbin Aleksandr
Published: December 2021

The wavelet transform is the transmission of a signal through a bandpass filter. The design of wavelets with a rectangular amplitude-frequency response makes it possible to obtain almost ideal digital filters. The wavelet transform is calculated in the frequency domain using the fast Fourier transform.
IMPROVEMENT OF THE ELECTRIC ARC PLASMATRON STRUCTURE
Authors: Pikalov Vladimir , Boykov Andrey , Ponomarev Pavel , Kondrat'ev Sergey
Published: December 2021

This article discusses the disadvantages of existing electric arc plasmatrons, for the solution of which a proprietary design is proposed. A description of the developed installation and a three-dimensional model are given.
BIOCHAR PRODUCTION FROM WASTE BIOMASS: CHARACTERIZATION AND EVALUATION FOR AGRONOMIC AND ENVIRONMENTAL APPLICATIONS
Authors: Pellera Frantseska-Maria , Regkouzas Panagiotis , Manolikaki Ioanna , Diamadopoulos Evan
Published: December 2021

This study focused on the valorization of different types of waste biomass through biochar production at two pyrolysis temperatures (400 and 600°C). The different feedstocks being used included three materials of municipal origin, specifically two types of sewage sludge and the organic fraction of municipal solid waste, and three materials of agroindustrial origin, specifically grape pomace, rice husks and exhausted olive pomace. The scope of the research was to characterize the resulting materials, in order to evaluate their possible uses in agronomic and environmental applications. Biochar characterization included the determination of several physical and chemical parameters, while germination assays were also carried out. Under the investigated conditions, both pyrolysis temperature and feedstock type appeared to significantly affect biochar characteristics, leading to the production of versatile materials, with many different possible uses. Specifically, results implied that biochars of both municipal and agroindustrial origin have the potential to effectively be used in applications including the improvement of soil characteristics, carbon sequestration, the removal of organic and inorganic contaminants from aqueous media, and the remediation of contaminated soil, with the degree of suitability of each material to each specific use being estimated to differ depending on its particular characteristics. For this reason, with these characteristics in mind, before proceeding to larger scale applications a cautious selection of materials should be conducted.
MICROPLASTICS IN LANDFILL LEACHATES IN THREE NORDIC COUNTRIES
Authors: van Praagh Martijn , Liebmann Bettina
Published: December 2021

We investigated the occurrence of microplastics (size range 5,000-50 µm) in leachates at 11 landfills of different age and operational status in Finland, Iceland and Norway. Collective sampling was carried out by pumping leachate with a stainless-steel submergible pump through a custom-made, stainless-steel filter unit containing filter plates with decreasing pore sizes (5,000, 417 and 47 µm, respectively). Samples were pre-treated and split into particles size classes above 500 μm and above 50 μm, and screened for occurrence of microplastics made of PE, PP, PVC, PS, PET, PA, PU, PC, PMMA, POM, SBR (rubber) or PMB (polymer modified bitumen). Samples were analysed by FT-IR spectroscopy, both to identify and to count microplastic particles (SBR and PMB were merely identified). Most samples tested positive for multiple microplastics. Three leachates, including drinking water (blank), tested positive for SBR particles and/or PMB only. Treated leachate samples exhibited lower total microplastic’s counts than untreated, up to several orders of magnitude. National waste management practices over time, landfill age or operational status do not seem to explain differences in microplastic abundance or counts between leachates. Particle count and calculated loads of microplastic emissions through leachates differed several orders of magnitude between landfills. Results indicate that landfill leachates might be a relatively small source of microplastics (>50 µm) to surface waters compared to untreated and treated sewage or road runoff. Continued data acquisition, improved sample preparation and understanding of variability of microplastics in landfill leachate are necessary, including particles smaller than 50 µm.
COMPREHENSIVE INVESTIGATION OF EXTRUSION OF П-SHAPED BRACKETS. REPORT 6. KINEMATIC AND STRESSED STATES OF BLANKET DURING RESTRICTED EXTRUSION. PART 4
Authors:   Bauman Moscow State Technical University, Vorontsov A. L. , Karpov S. M. ,   Bauman Moscow State Technical University
Published: December 2021

On the basis of the complete equation system of the plastic flow theory, the solution of the determination problem of the kinematic and stressed states of a blanket during completely restricted extrusion of П-shaped brackets under the conditions of plane deformation in the general case of a nonaligned placement of the punch and the die is stated. The determination of the force and geometric parameter of the process was carried out. The formulae were obtained, which are required for determination of the main technological parameters of the extrusion process of П-shaped products with a relatively thin horizontal bridge.
FUNDAMENTAL INVESTIGATION OF EXTRUSION OF П-SHAPED BRACKETS. ANALYSIS OF MODERN PRODUCTION METHODS
Authors:   Bauman Moscow State Technical University, Vorontsov A. L. , Karpov S. M. ,   Bauman Moscow State Technical University
Published: December 2021

By concrete comparison of technological possibilities of sheet-metal forging, rolling, profile bending, pressing and extruding, it has been found out that extrusion is the best method for production of П-shaped brackets with different thickness of forming elements.
Ocupaciones humanas de altura en el extremo Sur Andino. Evidencias arqueológicas de Valle Hermoso (Malargüe, Argentina).
Authors: Sugrañes Nuria , Acevedo Agustín , Bonnat Federico , Tucker Hugo , Salgán María Laura , Fiore Danae , Gil Adolfo , Neme Gustavo
Published: December 2021

En este trabajo se discuten las ocupaciones humanas de altura, entre los 2000 y 3000 msnm, en el extremo Sur andino durante el Holoceno tardío. Para ello, se integran los análisis líticos y cerámicos del sitio Valle Hermoso 1 y los relevamientos de arte rupestre de Valle Hermoso 2 y Valle Hermoso 3. Las evidencias muestran dos momentos de ocupación durante el Holoceno tardío final: un componente temprano (ca. 1900-1200 años AP) y un componente tardío (1200-250 años AP). Los resultados indican un uso intensivo de Valle Hermoso, con una alta reocupación estacional y modificaciones en la organización de las poblaciones humanas hacia momentos más tardíos, ca. 1200 años AP, con un cambio en el uso de la tecnología lítica y cerámica. La cronología y el registro arqueológico muestran conexiones con las Aldeas de Altura (más de 3500 msnm). Además, la existencia potencial de vínculos formales del arte rupestre con regiones alejadas, la presencia de elementos alóctonos (obsidiana de Coche Quemado y estilos cerámicos foráneos), podrían indicar una ampliación de las redes de interacción con poblaciones distantes. Los resultados presentados son discutidos en el contexto del resto de los sitios arqueológicos de altura del Sur de Mendoza.
Avatares del Museo Antropológico “Dr. Omar Barrionuevo”, Escuela de Arqueología, Universidad Nacional de Catamarca.
Authors: Espiro Valeria Elizabeth
Published: December 2021

Aquí expondremos una reseña histórica del Museo Antropológico “Dr. Omar Augusto Barrionuevo”, el cual actualmente, cuenta con una reserva aproximada de 300 bienes patrimoniales, los que son utilizados con fines de aprendizaje por los docentes y estudiantes de las distintas carreras de la Escuela de Arqueología, de la Universidad Nacional de Catamarca. Actualmente las colecciones no cuentan con registros sistematizados y sólo se cuenta con un diagnóstico general de los bienes culturales que las componen. Estas colecciones se transforman en un patrimonio invaluable para la universidad, la ciudad de Catamarca, la provincia y el país, y es así como surge la necesidad de su puesta en valor, para aportar condiciones para la investigación, la generación de nuevo cocimiento científico, recursos educativos y a la vinculación con la sociedad. Para finalizar reflexionaremos sobre el contexto actual del Museo, en tiempos de pandemia y la planificación de las actividades en la nueva normalidad, siendo conscientes que esta reflexión constituye un ejercicio estimulante y fundamental para el desarrollo de los museos y los profesionales que se desempeñan en ellos.
Estrategias tecnológicas y ocupación humana en las tierras bajas de Norpatagonia (Argentina)
Authors: Pompei María de la Paz , Sugrañes Nuria , Salgán María Laura
Published: December 2021

En este trabajo presentamos los resultados de los análisis tecno-morfológicos y arqueométricos aplicados a artefactos líticos y fragmentos cerámicos procedentes de la localidad arqueológica Arbolito, ubicada en la planicie extracordillerana de la Patagonia Mendocina (Argentina). Nuestro objetivo es caracterizar las estrategias tecnológicas que implementaron los grupos humanos en dicho espacio durante el Holoceno tardío, y contrastar las tendencias registradas con las expectativas propuestas para este escenario. Los resultados señalan el empleo de recursos locales en la manufactura de artefactos líticos y contenedores cerámicos, al igual que lo observado previamente en otros sitios del área. El registro de bienes exóticos (i.e., obsidiana de fuentes lejanas, cerámica de estilos foráneos) sugiere la interacción con otros ambientes a grandes distancias. Proponemos que su presencia estaría motivada por fines no tecnológicos. La perspectiva tecnológica nos permitió evaluar las estrategias implementadas en la planicie de la Patagonia Mendocina y contribuir a la discusión regional sobre la movilidad y ocupación humana en estos ambientes.
El sitio Alero Cuevas, Pastos Grandes, Puna de Salta: Actualización y síntesis arqueológica de los cambios registrados a lo largo del Holoceno en perspectiva regional
Authors: López Gabriel E. J.
Published: December 2021

Se presenta una síntesis actualizada de la evidencia arqueológica del sitio Alero Cuevas, Pastos Grandes, Puna de Salta, a lo largo de la secuencia estratigráfica datada en el Holoceno temprano, medio y tardío. La información arqueológica proveniente de este sitio se discute en el marco regional de la cuenca de Pastos Grandes y de la Puna argentina. Esta perspectiva regional es útil para abordar diversos procesos de cambio ocurridos durante el Holoceno. En particular, el registro de Alero Cuevas contribuye al estudio de las variaciones relacionadas con la intensificación y domesticación de camélidos, la movilidad y la interacción en escala amplia, y los cambios tecnológicos, entre otros aspectos. Los resultados de la investigación permitieron analizar estas problemáticas a partir de distintos indicadores arqueológicos, en especial arqueofaunísticos y líticos. Los cambios más notables ocurrieron a partir del Holoceno medio final y se profundizaron durante el Holoceno tardío. Asimismo, se han detectado continuidades en las estrategias de uso del sitio en escala cronológica de largo plazo.
The pregnant womenâ€™s experiences during the COVID-19 pandemic: a scoping review
Authors: Rosyad Shelly Rodliah , Satriyandari Yekti , Sharma Surabhi
Published: December 2021

Backgrounds: Pregnancy is a normal physiological process experienced by women. During this COVID-19 pandemic, pregnant women have atypical experiences. The COVID-19 pandemic also instigates psychological problems in the form of anxiety and depression in pregnant women. Supports are exceedingly needed by pregnant women, especially during the current pandemic. They can take several measures during their pregnancy to reduce their level of anxiety.Objective of the study: To review evidence related to pregnant womenâ€™s experiences during the COVID-19 pandemic.Review methods: This scoping review method begins with identifying scoping review questions using PEO framework; identifying relevant articles chosen based on inclusion and exclusion criteria; searching for articles using databases, namely EBSCO, PubMed, Science Direct, and Wiley Online Library; selecting articles of which search flow is described through PRISMA Flowchart; performing data charting and critical appraisal; and compiling and reporting results.Results: Based on 8 chosen articles, 7 articles are marked grade A in quantitative research design non-randomized (5), quantitative descriptive (1), qualitative (1), and 1 article is marked grade B in quantitative descriptive research design. Furthermore, there are 3 obtained themes, including psychological conditions, coping strategies and the pregnant women's needs during the COVID-19 pandemic.Â  Conclusion: The COVID-19 pandemic affects the pregnant womenâ€™s experiences due to the emergence of psychological responses in the form of anxiety, depression and fear. One of coping strategies carried out by pregnant women during the COVID-19 pandemic is by doing physical activities such as exercising, doing their hobbies, thinking positively and finding out information. Social supports and accurate information obtained help pregnant women to overcome their anxiety.