bluuebunny/crossref_metadata_2025 huggingface dataset:
Gastroprotection and mucus stimulation by vitamin D3 in pyloric ligation and Indomethacin-induced gastric ulcers rats models
Authors: Harrison Oghogho Otamere , Uwaifoh Akpamu
Published: October 2021

The effect of vitamin D3 (VD3) on gastric ulcers was investigated by evaluating ulcer index, biochemical aggressive, and protective factors. Rats were divided into 4 groups; untreated indomethacin ulcer, VD3 pre-treated + indomethacin ulcer, untreated pyloric-ligation ulcer and VD3 pre-treated + pyloric-ligation ulcer. Treatment with VD3 (400 IU/kg intramuscular) was done daily for 6 days and an hour before ulcers induction. Four hours post-induction, the blood sample was obtained for the determinations of 1,25-dihydroxy vitamin D (1,25-DHCC), Parathyroid Hormone (PTH), and Calcium (Ca). Laparotomy was performed and the stomach was harvested for gastric acidity, ulcer index, and biochemical evaluations. The data were analyzed using statistical tools and the “student t-test” was performed at p<0.05. VD3 pre-treatmment caused an increase in serum levels of 1,25-DHCC, has no significant effect on PTH and Ca levels but decreased gastric acidity and ulcer index (p<0.05) with protective ratios of 42.11% and 60.00% against indomethacin and pyloric-ligation ulcers respectively. Pretreatment resulted in decreased gastric MDA, increased gastric protein, mucin, and nitric oxide levels. Gastric protection by VD3 was through oxidative stress inhibition and stimulation of mucus and blood flow against indomethacin and pyloric ligation gastric damage.
Microplate reader operating procedure v1
Authors: Guo Shuning , Wei Zhujun
Published: October 2021

Use Tecan Spark® multimode microplate reader to measure absorbance or fluorescence intensity of green fluorescence protein.
Histopathological study of lower gastrointestinal tract lesions
Authors:   MD Pathology, Smt. NHL Municipal Medical College, V S. General Hospital, Ahmedabad, Gujarat, India, Patel Dr. Vibhaben Kantilal , Goyal Dr. Anjali Deepak ,   Associate Professor, Smt. NHL Municipal Medical College, V S General Hospital, Ahmedabad, Gujarat, India
Published: October 2021

Background: The benign lesions of the lower gastrointestinal tract are responsible for a largenumber of morbidities. The microscopic examination of and determination of histological types ofmalignant lesions help to decide treatment options and to predict prognosis. The histopathologicalstudy is the Gold standard for the diagnosis of intestinal lesions. Aims and Objectives: To studythe prevalence of various lower gastrointestinal tract lesions site-wise, age-wise and gender-wiseand to compare the obtained results with other studies. Materials and methodology: Aretrospective study of 600 various lower gastrointestinal tract lesions sent for histopathologicalexamination at Pathology department of tertiary care centre, VS General Hospital, Ahmedabad iscarried out. Results: Among all the 600 cases, non-neoplastic lesions 572 (95.34%) are far morecommon than neoplastic lesions 28 (4.66%). Conclusion: Non-neoplastic lesions are common in thesmall intestine, while the large intestine harbors most malignant lesions.
Enseñanza virtual de lengua inglesa durante el confinamiento domiciliario: percepciones y reacciones del alumnado en una universidad española
Authors: Echauri Galván Bruno , García Hernández Silvia , Fernández-Gil María Jesús
Published: October 2021

La explosión de la pandemia de covid-19 en España supuso un reto mayúsculo para las universidades con educación presencial ya que estas fueron obligadas a adaptarse a la docencia en línea de manera casi inmediata. Este artículo tiene el objetivo de ofrecer una instantánea de los resultados de este salto repentino a un modelo virtual en la enseñanza de lengua inglesa en distintos programas de grado de la Universidad de Alcalá en España. Para ello, se centra en las percepciones y reacciones del alumnado. Los datos derivaron de una encuesta respondida por 159 estudiantes de Inglés de las facultades de Filosofía y Letras; y de Ciencias Económicas, Empresariales y Turismo, y de un grupo de discusión posterior en el que participaron los autores del estudio y una selección de los encuestados. Estos dos métodos se utilizaron para ahondar en el tratamiento dado a aspectos centrales de la enseñanza de lenguas extranjeras, tales como: (a) la adquisición de competencias, (b) los métodos de evaluación, (c) la utilidad de las tecnologías de la información y la comunicación (tic), y (d) la interacción entre estudiantes y entre estudiantes y docentes, durante el periodo de enseñanza a distancia que sobrevino a la pandemia. Los resultados evidenciaron la problemática que entraña esta modalidad virtual en cuanto a la adquisición y la práctica de destrezas como la expresión oral, la participación en clase, la articulación del trabajo en grupo y las relaciones interpersonales. Además, subrayaron beneficios, tales como un mayor conocimiento y manejo de los recursos tecnológicos. Finalmente, sirvieron para mostrar al profesorado los instrumentos digitales de trabajo y evaluación mejor y peor valorados por el estudiantado.
Comparison of the Effectiveness of Leaf Extracts of Anredera cordifolia, Psidium guajava and Pogostemon cablin on Inhibitory Power Over Escherichia coli Bacteria
Authors: Budianto Budianto , Arum sari Alif Gita , Inayah Nurul , Fatmaningrum F. , Suparmi Anik
Published: October 2021

Background: the current research studies why it is effective using Anredera cordifolia, Psidium guajava, and Pogostemon cablin by the local community as a traditional medicine for diarrhea treatment caused by Escherichia colibacteria. Objectives: We compared the inhibitor effectiveness of three leaf extracts against Escherichia coli; we also identified the anti-bacterial substances contained in leaf extracts. Methods: We determined the bacterial test activity using the "agar diffusion" method and the thin layer chromatography (TLC) as qualitative analysis for determining the anti-bacterial substances contained in the extract. Results: The Pogostemon cablin leaf extract contained terpenoids, phenolic, and flavonoids compound as bacterial inhibitors, and the comparison showed that Pogostemon cablin leaf extract had the greatest bacterial inhibition power. Conclusion: The antibiotic substances found in the leaf extracts of Anredera cordifolia, Psidium guajava, and Pogostemon cablin can be used as traditional medicine. The breakthrough was evidenced by the ability to inhibit Escherichia coli bacteria. This research shows that traditional medicine has ancient knowledge used by this paper
Analysis and Synthesis of a Fuzzy Controller by the Phase Plane Method
Authors: Bykovtsev Y. A.
Published: October 2021

The article is devoted to solving the problem of analysis and synthesis of a control system with a fuzzy controller by the phase plane method. The nonlinear transformation, built according to the Sugeno fuzzy model, is approximated by a piecewise linear characteristic consisting of three sections: two piecewise linear and one piecewise constant. This approach allows us to restrict ourselves to three sheets of phase trajectories, each of which is constructed on the basis of a second-order differential equation. Taking this feature into account, the technique of "stitching" of three sheets of phase trajectories is considered and an analytical base is obtained that allows one to determine the conditions for "stitching" of phase trajectories for various variants of piecewise-linear approximation of the characteristics of a fuzzy controller. In view of the specificity of the approximated model of the fuzzy controller used, useful analytical relations are given, with the help of which it is possible to calculate the time of motion of the representing point for each section with the involvement of the numerical optimization apparatus. For a variant of the approximation of three sections, a technique for synthesizing a fuzzy controller is proposed, according to which the range of parameters and the range of input signals are determined, at which an aperiodic process and a given control time are provided. On the model of the automatic control system of the drive level of the mechatronic module, it is shown that the study of a fuzzy system by such an approximated characteristic of a fuzzy controller gives quite reliable results. The conducted studies of the influence of the degree of approximation on the quality of control show that the approximated characteristic of a fuzzy controller gives a slight deterioration in quality in comparison with the smooth characteristic of a fuzzy controller. Since the capabilities of the phase plane method are limited to the 2nd order of the linear part of the automatic control system, the influence of the third order on the dynamics of the system is considered using the example of a mechatronic module drive. It is shown that taking into account the electric time constant leads to overshoot within 5-10 %. Such overshoot can be eliminated due to the proposed recommendations for correcting the static characteristic of the fuzzy controller.
SOLVABILITY OF HOMOGENIZED PROBLEMS WITH CONVOLUTIONS FOR WEAKLY POROUS MEDIA
Authors: Sandrakov G. V. , Hulianytskyi A. L.
Published: October 2021

Initial boundary value problems for nonstationary equations of diffusion and filtration in weakly porous media are considered. Assertions about the solvability of such problems and the corresponding homogenized problems with convolutions are given. These statements are proved for general initial data and inhomogeneous initial conditions and are generalizations of classical results on the solvability of initial-boundary value problems for the heat equation. The proofs use the methods of a priori estimates and the well-known Agranovich–Vishik method, developed to study parabolic problems of general type.
A Case of Cutaneous Purpureocillium lilacinum
Infection Looking like Psoriasis
Authors: Ha Nam Gyoung , Park Kyung Duck , Bang Yong Jun , Jun Jae Bok , Choi Jong Soo , Lee Weon Ju
Published: October 2021

Purpureocillium lilacinum is a saprophytic fungus with a ubiquitous environmental distribution, and it can be detected in soil samples and decaying materials worldwide. It has been reported as an emerging pathogen in both immunocompromised and immunocompetent patients, showing various cutaneous presentations. Herein, we report a case of a patient with a localized cutaneous P. lilacinum infection, which resembles the skin lesions of psoriasis. A 72-year-old female was presented with a peripherally spreading, well-demarcated, asymptomatic, scaly, erythematous patch on her forehead for several months. Histopathological examination showed pinkish septated fungal elements and mixed inflammatory and granulomatous infiltrates in the dermis. Furthermore, a fungal culture on potato dextrose agar showed gray, velvety colonies with light yellow background after being subcultured. Phialides with chains of oval conidia were observed on lactophenol cotton blue staining. The ITS region of rRNA gene sequence obtained from the colony was identical to that of Purpureocillium lilacinum. The lesion was resolved with oral itraconazole (200 mg/day) after four months of treatment.
EVALUATION OF PHYSICAL BURDENS OF OPERATORS USING ERGONOMICS
Authors:   Slovak University of Technology in Bratislava, Faculty of Materials Science and Technology in Trnava, Institute of Industrial Engineering and Management,Slovakia, MARKOVA PETRA , PRAJOVA VANESSA ,   Slovak University of Technology in Bratislava, Faculty of Materials Science and Technology in Trnava, Institute of Industrial Engineering and Management,Slovakia
Published: October 2021

The article describes the experience from assessing the load of the upper limbs during the horning operation, which is one of the more difficult manual manipulations. Several analytical methods were used to obtain complex analytical data. They were used to identify deficiencies in work activity causing loading of the upper limbs, which in the form of increased effort affect employees' work performance in the monitored work activity. The excessive workload of workers has a significant impact not only on the decline in performance but also on the development of difficulties caused by the cumulative effect of risk factors (work and work environment) and, last but not least, on the increase in accidents and occupational diseases. A comprehensive assessment of work activity based on various methods serves as a basis for ergonomic rationalization of work activity to reconcile the demands of work activity with operators' physical possibilities and abilities.
INCREASING OF WEAR RESISTANCE OF LINEAR BLOCK-POLYURETHANES BY THERMAL PROCESSING METHODS
Authors:   Technical University of Kosice, Department of Automotive and Manufacturing Technologies, Faculty of Manufacturing Technologies with a seat in Presov, Slovak Republic, PANDA ANTON , MYKOLAJOVYCH ANISIMOV VOLODYMYR ,   Ukrainian State Chemical Technology University, Ministry of Education and Science of Ukraine, VOLODYMYROVYCH ANISIMOV VOLODYMYR ,   Ukrainian State Chemical Technology University, Ministry of Education and Science of Ukraine, DYADYURA KONSTANTIN ,   Sumy State University, Ministry of Education and Scieence of Ukraine, PANDOVA IVETA ,   Technical University of Kosice, Department of Automotive and Manufacturing Technologies, Faculty of Manufacturing Technologies with a seat in Presov, Slovak Republic
Published: October 2021

A significant imperfection of parts made from linear block-polyurethanes under conditions of friction contact in the presence of water medium is an intensification of hydrolysis processes and reduction of bulk strength. In order to slow down the hydrolysis process, samples of the polyurethanes were subjected to three types of thermal impacts: thermal processing during some time, infrared and laser irradiations. It has been established that processing in thermal fields of different intensity allows 5-10 times increase of wear resistance of these materials during friction in water medium.
VERIFICATION OF FORCE TRANSDUCER FOR DIRECT AND INDIRECT MEASUREMENTS
Authors:   Technical University of Kosice, Faculty of Mechanical Engineering, Kosice, Slovakia, KELEMENOVA TATIANA , DOVICA MIROSLAV ,   Technical University of Kosice, Faculty of Mechanical Engineering, Kosice, Slovakia, KOLARIKOVA IVANA ,   Technical University of Kosice, Faculty of Mechanical Engineering, Kosice, Slovakia, BENEDIK ONDREJ ,   Technical University of Kosice, Faculty of Mechanical Engineering, Kosice, Slovakia, MAXIM VLADISLAV ,   Technical University of Kosice, Faculty of Mechanical Engineering, Kosice, Slovakia
Published: October 2021

Paper deals with verification of high load force sensor using the small weight weights. Test band was built for this purpose. Verification of test band were executed using the etalon reference sensor. Small forces were executed via using the direct method through the applying of weights. High forces were executed using the indirect method through the lever amplification of load derived from small weights. Uncertainties of measurement were evaluated.
KINEMATICS OF TWO LINK MANIPULATOR IN MATLAB/SIMULINK AND MSC ADAMS/VIEW SOFTWARE
Authors:   Technical University of Kosice, Faculty of Mechanical Engineering, Kosice, Slovak Republic, HRONCOVA DARINA , MIKOVA LUBICA ,   Technical University of Kosice, Faculty of Mechanical Engineering, Kosice, Slovak Republic, VIRGALA IVAN ,   Technical University of Kosice, Faculty of Mechanical Engineering, Kosice, Slovak Republic, PRADA ERIK ,   Technical University of Kosice, Faculty of Mechanical Engineering, Kosice, Slovak Republic
Published: October 2021

The paper deals with the kinematic analysis of a manipulator mechanism. The matrix method of kinematic analysis is used for the solution. The robot's mechanism is an open kinematic chain. The vector of position, velocity and acceleration is determined. The problem is solved using Matlab and MSC Adams / View. The Matlab program is used to solve kinematics equations in symbolic form. Computer software reduces the design time and also brings economic benefits. Conditions are being created for faster research and the creation of new mechanical systems gradually appearing in the production area. Computer simulation can also serve an educational purpose and giving additional information about the mechanical systems through simulation and kinematic analysis.
INFLUENCE OF NON-METALLIC INCLUSIONS ON THE CORROSION RESISTANCE OF STAINLESS STEELS IN ARC SURFACING
Authors:   Technical University of Kosice, Faculty of Manufacturing Technologies with a seat in Presov, Slovak Republic, PANDOVA IVETA , MAKARENKO VALERY ,   Poltava National Technical University imeni by Yury Kondratyuk of Ukraine, Poltava, MITROFANOV PAVLO ,   Poltava National Technical University imeni by Yury Kondratyuk of Ukraine, Poltava, DYADYURA KOSTIANTYN ,   Sumy State University, Ministry of Education and Science of Ukraine, Sumy, HREBENYK LIUDMYLA ,   Sumy State University, Ministry of Education and Science of Ukraine, Sumy
Published: October 2021

The influence of non-metallic inclusions on the corrosion resistance of stainless steel of the austenitic-martensitic class, deposited in one layer with flux-cored wire under the flux by the arc method in the mode of stationary and pulsed arc burning, has been studied. In the latter case, the wire feed impulse was 0.5 and 0.7 Hz. The selected surfacing conditions, with both methods of the process, contribute to the formation of non-metallic inclusions of complex composition and structure in the deposited metal, including those containing calcium and its compounds with other elements, which are classified as corrosive, accelerating the occurrence of corrosion phenomena.
DC MOTOR FUZZY MODEL BASED OPTIMAL CONTROLLER
Authors:   Dept. of Electrical Engineering and Mechatronics, FEI, Technical University of Kosice, Kosice, Slovak republic, PERDUKOVA DANIELA , FEDOR PAVOL ,   Dept. of Electrical Engineering and Mechatronics, FEI, Technical University of Kosice, Kosice, Slovak republic, LACKO MILAN ,   Dept. of Electrical Engineering and Mechatronics, FEI, Technical University of Kosice, Kosice, Slovak republic
Published: October 2021

This paper presents a method for the design of optimal fuzzy controller of a DC motor using a fuzzy model based approach with emphasis on minimal knowledge on the controlled system. In the first part of the paper we describe the method of the black-box fuzzy model design based only on the system´s measured input/output data without the necessity of preliminary knowledge of its internal structure and parameters. This fuzzy model is in the second part used in the design of optimal fuzzy controller based on finding the sequence of input signal values that will transfer the controlled system into the desired state in accordance with the selected optimality criterion. The realized simulation and experimental measurements performed on HIL platform have confirmed the correctness and effectiveness of the proposed design method and also its applicability to others dynamic systems with as little previous knowledge as possible.
RESEARCH AND DIAGNOSTICS FOR THE LABORATORY OF PRESSURE RESISTANT SENSORS
Authors:   Slovak technical university in Bratislava, Faculty of Materials Science and Technology in Trnava, Slovakia, ZELNIK ROMAN , KAMENSZKA ADRIANA ,   Slovak technical university in Bratislava, Faculty of Materials Science and Technology in Trnava, Slovakia, BOZEK PAVOL ,   Slovak technical university in Bratislava, Faculty of Materials Science and Technology in Trnava, Slovakia
Published: October 2021

The use of the sensors shortens the service life, wears out and reduces their accuracy due to operation. For sensors with a susceptibility to inaccuracy, it is possible to create a sensor-device-software diagnostic set. Such a scheme of configuration should be able to provide autonomic diagnostic, calibration, evaluation and also recalibration of the sensor. The diagnostic equipment could also have a shock test function in order to intentionally and faster reduce the service life and thus test the correctly set parameters of the diagnostic algorithm in laboratory conditions. The diagnostic device is a specialized technical system that provides conditions for the future potential of the testing development, knowledge and experience. According to the design, it can be modularly enriched with new parts, fixtures and systems to provide a more diverse range of options. There would be space for exploring the possibilities of new types of sensors, their comparison, as well as full-fledged automation of the complex diagnostic process.
INFLUENCE OF PROCESS PARAMETERS IN FRICTION DRILLING OF TITANIUM TI-6AL-4V ALLOY
Authors:   Department of Industrial Engineering, Faculty of Engineering, Thammasat University, Thailand, PANGJUNDEE THONGCHAI , MUTTAMARA APIWAT ,   Department of Industrial Engineering, Faculty of Engineering, Thammasat University, Thailand
Published: October 2021

Friction drilling is a process of using the friction between the rotating conical tool and the workpiece to generate heat and deform the work piece’s material and penetrate the hole. The softened material is pushed sideward and downward to make the bushing. This paper aimed to study the influence of friction drilling parameters. Thrust forces and torque forces were analysed. Experiments were carried out with a friction drill tool made of tungsten carbide on titanium grade Ti-6Al-4V. The parameters used in this study were spindle speed and feed rate. It was found that the thrust force and torque decreased with increased spindle speed and with decrease of feed parameters. The microstructure reveals that deformed grains at hole’s surface relate to hardness on the cross-section of workpiece. The highest value of microhardness was 813.2 HV and reduced to the original hardness of the matrix material.
MANUFACTURING OF SANDWICH PANELS AND ITS VERIFICATION BY NUMERICAL SIMULATION
Authors:   Brno University of Technology, Faculty of Mechanical Engineering, Institute of Manufacturing Technology, Brno, Czech Republic, HARANT MARTIN , RIHACEK JAN ,   Brno University of Technology, Faculty of Mechanical Engineering, Institute of Manufacturing Technology, Brno, Czech Republic, MRNA LIBOR ,   Institute of Scientific Instruments of the Czech Academy of Sciences, Brno, Czech Republic
Published: October 2021

This paper deals with the manufacturing of a parallel hydroformed sandwich panel, which is used as a reinforcement for solar panels. The forming process can cause excessive thinning and cracking. Therefore, PAM-STAMP software is used for the analysis of defects. The outputs of the numerical simulation provide information, such as failure pressure, critical areas or limiting deformations. The comparison of the numerical simulation with the experimentally obtained data is created for the validation of these outputs. The comparative criteria are the failure pressure, the crack zone, and the thickness distribution. Subsequently, the results can be used for a design optimization of the sandwich panel.
RATIONALIZATION OF PRODUCTION OF SHAPED INSERTS FOR ROTOR CASTING
Authors:   Faculty of Mechanical Engineering, Department of machining, assembly and engineering metrology VSB-TU Ostrava, Czech republic, DOSTAL PAVEL , SADILEK MAREK ,   Faculty of Mechanical Engineering, Department of machining, assembly and engineering metrology VSB-TU Ostrava, Czech republic
Published: October 2021

The article deals with the rationalization of the production of shaped inserts for casting rotors. The theoretical part describes the characteristics of shaped inserts for rotor casting, die casting technology, analysis of the existing technology of production of shaped inserts. The main part of the article is focused on the proposed technological process of production, comparison of existing and proposed process. The article concludes with a technical and economic benefit of the proposed solution and evaluation of the work. Rationalization of production has its justification in the development of the company and thus improve competitiveness in the market. These interventions in production offer the possibility of using new technologies that are beneficial both from an economic point of view and to improve working conditions. The article focuses on the description of the existing technology, its evaluation and subsequent processing of a new technological process.
ON THE SIMULATION OF THE FIRST NATURAL FREQUENCY OF A TUNED MASS DISC DAMPER
Authors:   RWTH Aachen University, Laboratory for Machine Tools and Production Engineering, Aachen, Germany, BRECHER CHRISTIAN , ZHAO GUIFENG ,   RWTH Aachen University, Laboratory for Machine Tools and Production Engineering, Aachen, Germany, FEY MARCEL ,   RWTH Aachen University, Laboratory for Machine Tools and Production Engineering, Aachen, Germany
Published: October 2021

The tuned mass disc damper (TMDD) can be applied to avoid chatter of machine tools. The effectiveness of the TMDD depends mostly on the tuning accuracy of the natural frequency. In this paper, three finite element models are presented to simulate the vibrations of the TMDDs. The simulated natural frequencies are compared with measured results. The third model solves the problems of the first and the second model and can predict the natural frequencies of the TMDDs with an acceptable error.
METHODOLOGY FOR THE UTILIZATION OF WASTE HEAT BY AIR-COOLED COMPRESSORS
Authors:   VSB-Technical University of Ostrava, Czech Republic, PACAS LUKAS
Published: October 2021

Compressed air is still a valid helper in many applications today, where it is necessary, for example, to move work equipment, pistons or it is used for cooling as a cooling medium. The producer of compressed air are air compressors, which need an external source for its production, usually an electric or internal combustion engine. Almost all the energy that is supplied to the compressor is always converted to heat during compression, regardless of the type of compressor. This carries the risk of overheating and therefore the cooling system must be optimally designed. Thus, during the compression of the air, a large part of the electrical energy supplied to the compressor is converted into heat, and only a small part of the supplied energy is in the compressed air. In the case of oil or water-cooled compressors, the exchangers can be used directly to obtain energy "for free". In the case of air cooling, a slight energy gain can only be achieved by modifying the exhaust hot air ducts. This energy can be used efficiently to heat water or heat buildings, instead of being uselessly ventilated. Modern compressors are already adapted for the use of waste heat, but most current companies still use older types of compressors that have not been directly adapted for the use of waste heat. In case of interest in obtaining waste heat, the reconstruction of the facility or development is inevitable.
APPLICATION OF WC GRAINS BY DEPOSITION BRAZING
Authors:   FSI VUT Brno, Faculty of Mechanical Engineering, Institute of Welding and Surface Treatment, Brno, Czech Republic, SIGMUND MARIAN , IZAK JOSEF ,   FSI VUT Brno, Faculty of Mechanical Engineering, Institute of Welding and Surface Treatment, Brno, Czech Republic
Published: October 2021

The article describes problems of hard depositional brazing of wolfram-carbide grains in various matrixes. Especially iron and nickel base matrix on base material from constructional carbon steel. The experimental part was brazed by oxyacetylene flame (method 912 according to EN ISO 4063). The major goals of the experiment were to describe the technological procedure of hard depositional brazing of this specific part. Consequently, were proved wolfram-carbide deposit on two test coupons. These test coupons were metallographically and qualitatively evaluated. The advantage of wolfram-carbide depositional brazing is a service life of deposit, that could be multiple higher, than standard weld deposit with carbon, chromium and vanadium filler material. The advantage is also costly because this kind of braze is cheaper than hard surfacing filler material. This specific application of the wolfram-carbide layer is one of the hardest coatings that could be by flame brazing technology performed. Usage of this application is for example in the mining, woodcutting industry, where it is necessary to improve abrasion and resistance, service life, and guaranteed durability or hardness for cutting tools.
OPTIMIZATION OF THE FORMING PROCESS OF GUTTER END CAP USING THE FINITE ELEMENT METHOD
Authors:   Institute of technology and materials engineering,  Faculty of mechanical engineering,  Technical University of Kosice, Slovakia, MULIDRAN PETER , SPISAK EMIL ,   Institute of technology and materials engineering,  Faculty of mechanical engineering,  Technical University of Kosice, Slovakia, MAJERNIKOVA JANKA ,   Institute of technology and materials engineering,  Faculty of mechanical engineering,  Technical University of Kosice, Slovakia, MITAL GERHARD ,   Institute of technology and materials engineering,  Faculty of mechanical engineering,  Technical University of Kosice, Slovakia, JEZNY TOMAS ,   Institute of technology and materials engineering,  Faculty of mechanical engineering,  Technical University of Kosice, Slovakia
Published: October 2021

The contribution deals with the optimization of the forming process with the use of FE analysis. The impact of the planar anisotropy and friction coefficient on the drawing process was evaluated in the numerical simulation. Optimization of metal blank size and shape with the use of metal forming simulation was also performed. Studied material was galvanized drawing quality steel which is used for the production of the rain gutter end cap. Effects of planar anisotropy and friction coefficient on the quality of steel stamping were evaluated with the use of FE simulation. The effect of anisotropy was also experimentally tested. The aim of this work was to determine the correct steel blank size and shape and to evaluate the effects of planar anisotropy on the thickness variation and wall wrinkling.
PENGARUH PERSEPSI PROFESI GURU DAN EFIKASI DIRI TERHADAP MINAT MENJADI GURU
Authors: Sholichah Saniyatus , Pahlevi Triesninda
Published: October 2021

Abstract: This study aims to find the influence of perception of the teacher profession and self-efficacy on the interest of becoming a teacher in students of the Office Administration Education Study Program of the Faculty of Economics, State University of Surabaya Class of 2017. The type in this study is explanatory research with quantitative approach. The data is collected through research instruments using questionnaires. The analysis method is multiple linear regression analysis with SPSS 25 application. The results of the study were: (1) The perception of the teacher profession positively and significantly influenced the interest in becoming a teacher in students of education department of office administration unesa 2017. (2) Self-efficacy does not have a significant influence on the interest in becoming a teacher in students of unesa office administration education program 2017. (3) The perception of the teacher's profession and self-efficacy positively and significantly affect the interest of teachers in students of education department of office administration of UNESA 2017. Keywords: Perception of The Teacher's Profession; Self Efficacy; Interest Becoming a Teacher. Abstrak: Penelitian ini memiliki tujuan untuk mendapati pengaruh persepsi profesi guru dan efikasi diri terhadap minat menjadi guru pada mahasiswa Program Studi Pendidikan Administrasi Perkantoran Fakultas Ekonomi Universitas Negeri Surabaya Angkatan 2017. Jenis pada penelitian ini yaitu penelitian eksplanatori dengan pendekatan kuantitatif. Data dikumpulkan melalui instrument penelitian dengan menggunakan angket. Metode analisis yaitu analisis regresi linear berganda dengan aplikasi SPSS 25. Hasil penelitian yaitu: (1) Persepsi profesi guru berpengaruh secara positif dan signifikan terhadap minat menjadi guru pada mahasiswa prodi pendidikan administrasi perkantoran UNESA 2017. (2) Efikasi diri tidak memberikan pengaruh yang signifikan terhadap minat menjadi guru pada mahasiswa prodi pendidikan adminitrasi perkantoran UNESA 2017. (3) Persepsi profesi guru dan efikasi diri berpengaruh secara positif dan signifikan terhadap minat mnejadi guru pada mahasiswa prodi pendidikan administrasi perkantoran UNESA 2017. Kata kunci:Persepsi Profesi Guru; Efikasi Diri; Minat Menjadi Guru.
Evaluation the Application Status of GAAP in Financial Reporting Practice: In Case of Banking Sector in Bangladesh
Authors: Banu Mst. Hasna , Sayaduzzaman Md. , Sil Subhash Chandra
Published: October 2021

The prime concentration of this study is to scan the respondents’ opinions regarding the application status of the different units of GAAP in preparing the different financial reports by the sample banks. To meet this objective an attempt has been made to collect opinions from one hundred fifty respondents comprising of fifty chartered accountants, fifty cost and management accountants as well as fifty academicians. Frequency analysis has been used to evaluate their perceptions. The result of frequency analysis reveals that the sample banks greatly apply the accounting entity assumption, going concern assumption, assumption of a stable momentary unit as well as time period assumption in preparing the financial statements. Furthermore, this study has likewise employed ANOVA as well as Chi-square techniques to investigate whether there is any significant deviation amidst the respondents’ opinion concerning the execution of different segments of GAAP for financial reporting practice of the sample banks and the outcomes indicate that there is the significant difference among the respondents’ opinion regarding the application status of the different units of GAAP in financial reporting practice by the sample banks in some cases and in other cases the difference of opinion has also been observed.
Necesidad del dictamen pericial médico como requisito para admitir demanda de responsabilidad medica
Authors: Ayazo Orozco Alberto Mario
Published: October 2021

La importancia de un dictamen pericial médico en las demandas de responsabilidad médica es fundamental, ya que para que la conducta de un médico pueda ser valorada, y establecer si este actuó conforme a lo que establece la ley de ética médica, o la lex artis, necesariamente se requiere de un experto que en la calidad de perito determine si el médico actuó o no conforme a lo que ordena la ciencia médica, de allí que necesariamente se debe señalar que en procesos en donde se juzgue a un profesional médico, sin que exista perito médico, difícilmente se podrá concluir si éste es o no responsable. En la mayoría de los procesos de responsabilidad médica, los demandantes y sus apoderados, desde la presentación de la demanda, nunca aportan como prueba un dictamen pericial médico que permita darle una directriz al operador judicial, sino que siempre solicitan que se decrete la práctica de esta prueba, a través de oficio ante las autoridades competentes como el Instituto Nacional de Medicina Legal y Ciencias Forenses, entidad que por tener una gran congestión de solicitudes de peritazgos, demora la entrega de los mismos. Se debe establecer un cambio que permita la exigencia de un dictamen pericial médico con la presentación de las demandas de responsabilidad civil y que sea requisito de admisión de la misma, con el fin de evaluar su incidencia en la celeridad para proferir un fallo de sentencia.
Análisis del proceso monitorio en Colombia en virtud de los pronunciamientos de la corte constitucional
Authors: Gamez Rodríguez Coraima
Published: October 2021

Con el desarrollo de la presente investigación se pretenderealizar un análisiscrítico acerca de la efectividad del procesomonitorio en Colombia, esto a partir de los pronunciamientosde la Corte Constitucional en los que desarrolla laprocedibilidad y tramite de dicho proceso, en lo atinente a laexigibilidad de la notificación personal al demandado,excluyendo cualquier otra forma de notificacióno mecanismode defensa como la curaduría. La investigación atenderá a loscriterios del enfoque cualitativo, bajo el método analíticodescriptivo para averiguar cómo se ha implementado elproceso monitorio en el sistema judicial colombiano; asímismo las técnicas e instrumentos de recolección de datosque se utilizarán serán la revisión documental yjurisprudencial.
Derechos Patrimoniales De Compositores, Interpretes, Productores Y Representantes De La Industria Musical
Authors: Fajardo Cruz Elmer De Jesús , Rodríguez Mendoza José Ángel
Published: October 2021

A partir de la década de los noventa, cuando aparecieron las computadoras y el Internet y la consecuente digitalización, se ha dado un fenómeno que ha cambiado la industria musical de manera definitiva e irreversible. Esto ha obligado a los Estados a tener que actualizar los instrumentos normativos para regular debidamente el acceso a la música y los derechos de autor. Por ello esta investigación parte de la siguiente pregunta: ¿Cómo hacer que los sujetos involucrados en la industria musical tomen consciencia de los derechos patrimoniales? Esta pregunta abarca tanto a músicos como compositores y en definitiva todos los que hacen vida en la industria musical, pero principalmente al usuario, a quien se le pide que tenga responsabilidad en su consumo. Por tal motivo se hace en este trabajo un desarrollo teórico, conceptual y normativo donde se deja en evidencia la importancia de respetar los derechos patrimoniales, especialmente en países con una industria limitada y como es Colombia.
Análisis Económico del Derecho Desde el Punto de Vista Empresarial
Authors: Valdeblanquez Altamar Yiny
Published: October 2021

En La legislación colombiana se ha detectado una disputa e incertidumbre jurídica por la inexistencia de normas que regulen la conducta del sujeto empresarial, por lo que se ha adoptado desde el derecho comparado situaciones similares que conlleven al fundamento jurídico bajo el cual se resolverá el pleito. Así las cosas, el análisis económico del derecho desde el punto de vista empresarial, asiste e interviene con el fin de identificar las conductas empresariales y las acciones de los empresarios desde argumentos y criterios jurídico-económico para que a partir de esas concepciones se establezcan mecanismos judiciales en nuestra legislación que obedezcan a regular el actuar del sujeto empresarial y con ello, determinar de manera justa las sanciones a imponer de acuerdo a sus responsabilidades. De allí la relevancia que ha tomado el análisis económico en la aplicación de derecho como aquel principio rector y estructural en nuestro sistema legal colombiano, partiendo desde conocer cómo funciona el derecho para así comprender la relación importante que yace de la economía y del mismo derecho como estructura fundamental para la su aplicación eficaz en la determinación de decisiones impetradas por las autoridades competentes.
PSİKOLOJİK SÖZLEŞME İLE KİŞİ ÖRGÜT UYUMU ARASINDAKİ İLİŞKİDE YÖNETİCİYE DUYULAN GÜVENİN ARACILIK ETKİSİ: AKADEMİSYENLER ÜZERİNDE BİR ARAŞTIRMA
Authors: KAHRAMAN Çağdaş Akif , UĞURLU KARA Arzu
Published: October 2021

Bu çalışmanın amacı, psikolojik sözleşmenin kişi-örgüt uyumuna etkisinde yöneticiye duyulan güvenin aracılık etkisini ortaya koymaktır. Araştırma verileri Ankara ilinde bulunan bazı devlet üniversitelerinde çalışan 236 akademisyenden kolayda örnekleme yöntemiyle toplanmıştır. Psikolojik Sözleşme algısını ölçmek için Robinson ve Rousseau (1994) tarafından geliştirilen 9 sorudan oluşan ölçek, Yöneticiye Duyulan Güven algısını ölçmek için Nyhan ve Marlowe (1997) tarafından geliştirilen 5 sorudan oluşan ölçek, Kişi Örgüt Uyumunu ölçmek için Edward (1991) tarafından geliştirilen ve Valentine vd. (2002) tarafından revize edilen beş sorudan oluşan ölçek kullanılmıştır. Toplanan veriler, korelasyon ve regresyon temelli yol analizlerine tabi tutularak hipotezler test edilmiştir. Analiz sonuçlarına göre psikolojik sözleşme ile kişi-örgüt uyumu arasında anlamlı ve pozitif yönlü ilişkiler tespit edilmiştir. Ayrıca yöneticiye duyulan güvenin, psikolojik sözleşmenin kişi-örgüt uyumuna olan etkisinde kısmi aracılık etkisine sahip olduğu görülmüştür. Bu bulgular tartışılarak yönetici ve uygulayıcılara çeşitli önerilerde bulunulmuştur.
Classification of plumage images for identifying bird species
Authors:   Samara National Research University, Belko A.V. , Dobratulin K.S. ,   Samara National Research University,   National University of Science and Technology "MISiS", Kuznetsov A.V. ,   Samara National Research University,   IPSI RAS – Branch of the FSRC “Crystallography and Photonics” RAS
Published: October 2021

This paper studies the possibility of using neural networks to classify plumage images in order to identify bird species. Taxonomic identification of bird plumage is widely used in aviation ornithology to analyze collisions with aircraft and develop methods for their prevention. This article provides a method for bird species identification based on a dataset made up in the previous research. A method for identifying birds from real-world images based on YoloV4 neural networks and DenseNet models is proposed. We present results of the feather classification task. We selected several deep learning architectures (DenseNet based) for a comparison of categorical crossentropy values on the provided dataset. The experimental evaluation has shown that the proposed method allows determining the bird species from a photo of an individual feather with an accuracy of up to 81.03 % for accurate classification, and with an accuracy of 97.09 % for the first five predictions.
Road images augmentation with synthetic traffic signs using neural networks
Authors:   Lomonosov Moscow State University, Konushin A.S. ,   NRU Higher School of Economics, Faizov B.V. ,   Lomonosov Moscow State University, Shakhuro V.I. ,   Lomonosov Moscow State University
Published: October 2021

Traffic sign recognition is a well-researched problem in computer vision. However, the state of the art methods works only for frequent sign classes, which are well represented in training datasets. We consider the task of rare traffic sign detection and classification. We aim to solve that problem by using synthetic training data. Such training data is obtained by embedding synthetic images of signs in the real photos. We propose three methods for making synthetic signs consistent with a scene in appearance. These methods are based on modern generative adversarial network (GAN) architectures. Our proposed methods allow realistic embedding of rare traffic sign classes that are absent in the training set. We adapt a variational autoencoder for sampling plausible locations of new traffic signs in images. We demonstrate that using a mixture of our synthetic data with real data improves the accuracy of both classifier and detector.
Quality of radiation conversion under four-wave mixing on thermal nonlinearity with feedback
Authors:   Samara National Research University, Akimov A.A. , Guzairov S.A. ,   Samara National Research University, Ivakhnik V.V. ,   Samara National Research University
Published: October 2021

Quality of radiation conversion under four-wave mixing on thermal nonlinearity with feedback for both signal and object waves has been investigated at high reflection coefficients. It has been shown that the optimal operating mode of a four-wave converter on thermal nonlinearity is the mode in which the pumping waves have equal intensities and there is a compensation for a phase shift arising from the pumping wave self-action. In this operating mode of the four-wave radiation converter, as compared with the case of the absence of feedback for both signal and object waves, a significant increase in the amplitude reflection coefficient is observed with an increase in the pumping waves intensities. In this case, despite the decrease in the bandwidth of spatial frequencies of the object wave with an increase in the pumping wave intensities, the quality of radiation conver-sion with feedback for both signal and object waves is better than in the absence of feedback.
Measuring the Performance Efficiency of State Bank of India and HDFC Bank using Balanced Score Card
Authors: K. Subramoniam , Hari Harishma
Published: October 2021

The research article presents performance analysis of the State Bank of India Ltd and the HDFC Bank Ltd using Balanced Score Card (BSC) developed by Robert Kaplan and David Norton. It attempts an analysis to develop a deep understanding of the concept of BSC as a tool for strategy mapping and measurement of performance of a public sector bank and a private sector bank as mentioned elsewhere. BSC is a performance evaluation system not only based upon financial parameters, but also on non-financial aspects like customer indicators, internal business processes and employee learning and growth. Actual performance data from years 2009 to 2019 and business indicators of the year 2020 of the Banks are used for this purpose. The BSC model was developed to address the problems and limitations of relying only on financial measures for strategy formulation and measuring organizational performance. The study revealed that Gross NPA of SBI has increased while that of HDFC Bank has reduced during the period of study. Obviously the ROA is also better for HDFC Bank compared to that of SBI. It is inferred that HDFC Bank has garnered more net profit than SBI during the period of study. HDFC Bank has shown better performance compared to SBI according to the current study. The implication of the study is that both the banks have to visit all the areas of their business to ensure growth in financial performance, better customer service, efficient internal processes and higher learning and growth in the future years. This could ensure better profit management and risk management.
Determinant of Stock Market Prices in Nepal: A Case of Commercial Banks
Authors: Wagle Sudip
Published: October 2021

Equity share investment is one of the key investment paths that provide significant returns for investors but, unusual stock price instability makes confusion for them, as well as troubles for policymakers and the government authorities. This study aims to identify the empirical variables that influence the stock market price in commercial banks for 2015/16 to 2019/20 using a set of dependent and independent variables. The study is based on 130 observations from 26 commercial banks (out of 27) in Nepal using a secondary source and the information obtained from annual reports. The descriptive and causal-comparative research design was employed. For that, mean, standard deviation, correlation and regression analysis techniques have been used. The results revealed that Market to Book proportion (M/B), Price-earnings proportion (P/E) and Earning Yield proportion (E/Y) have a significant positive association with the stock market price. In contrast, the Dividend Yield proportion (D/Y) has a positive but insignificant impact on the stock market price. The finding of this study is valuable to the curious investors, concerned bankers, academicians and government authorities, which help them to more about the stock market’s returns and likelihood in the country.