bluuebunny/crossref_metadata_2025 huggingface dataset:
Mechanical Analysis of Clamp for Powerline Conductors
Authors: Paulech Juraj , Kutiš Vladimír , Gálik Gabriel , Murín Justín
Published: April 2020

The contribution deals with mechanical simulation of clamps for overhead powerline AlFe conductors. The process of pressed joint creation for two AlFe conductors and tensile test of such system are simulated using ANSYS software. The obtained results are compared to given tensile strength of the clamp.
Soil Load on Plastic Pipe and its Influence on Lifetime
Authors: Poduška Jan , Hutař Pavel , Frank Andreas , Kučera Jaroslav , Sadílek Jiří , Pinter Gerald , Náhlík Luboš
Published: April 2020

Lifetime of plastic pipes can be estimated by integration of a power law describing the crack kinetics. However, this procedure requires an FEM (finite element method) calculation of the possible crack propagation in the pipe to obtain stress intensity factor dependency on the crack length. It is very important for the simulation to consider every possible load that is acting on the pipe. This contribution deals with FEM modelling of a pipe that is loaded by internal pressure, residual stresses and soil loads. Comparison of the factors and pipe lifetime estimation is carried out.
Comparision of Dominant Features Identification for Tool Wear in Hard Turning of Inconel 718 by Using Vibration Analysis
Authors: Rao Dasari Kondala , Srinivas Kolla
Published: April 2020

In various machining processes, the vibration signals are studied for tool condition monitoring often referred as wear monitoring. It is essential to overcome unpredicted machining trouble and to improvise the efficiency of the machine. Tool wear is a vital problem in materials such as nickel based alloys as they have high hardness ranges. Though they have high hardness, a nickel based alloy Inconel 718 with varying HRC (51, 53, and 55), is opted as work material for hard turning process in this work. Uncoated carbide, coated carbide and ceramic tools are employed as cutting tools. Taguchi’s L9 orthogonal array is considered by taking hardness, speed, feed and depth of cut as four input parameters, the number of experiments and the combinations of parameters for every run is obtained. The vibration signals are recorded at various stages of cutting, till the tool failure is observed. Taking this vibration signal data as input to ANOVA and Grey relation analysis (GRA) which categorizes the optimal and utmost dominant features such as Root Mean Square (RMS), Crest Factor (CF), Skewness (Sk), Kurtosis (Ku), Absolute Deviation (AD), Mean, Standard Deviation (SD), Variance, peak, Frequency and Time in the tool wear process.
Free Vibration Analysis of Simply Supported P-FGM Nanoplate Using a Nonlocal Four Variables Shear Deformation Plate Theory
Authors: Abdelbaki Chikh
Published: April 2020

This paper shows an analysis of the free vibration of functionally graded simply supported nanoplate. The nonlocal four variables shear deformation plate theory is used to predict the free vibration frequencies of functionally graded nanoplate simply supported using non-local elasticity theory with the introduction of small-scale effects. The effect of the material properties, thickness-length ratio, aspect ratio, the exponent of the power law, the vibration mode is presented, the current solutions are compared to those obtained by other researchers. Equilibrium equations are obtained using the virtual displacements principle. P-FGM Power law is used to have a distribution of material properties that vary across the thickness. The results are in good agreement with those of the literature.
Application of Analogue Derivators for Obtaining Direct Non-Measurable Components of the State Vector in Crane Control
Authors: Patrik Grosinger , Peter Šolek
Published: April 2020

This paper presents a simple-to-use system for estimating non-measurable components of crane state vector considering parameter changes. To obtain them, it is possible to use a numerical derivative, where the measurement noise causes great inaccuracies, or the Luenberger observer and Kalman filter, which require knowledge of the dynamics of the controlled system, which is constantly changing with the crane.
Design and Finite Element Analysis of an Eight Wheel Stair Climbing Cart
Authors: Hasan Md Zahid , Rashid Moshiur
Published: April 2020

Most of the people living in developing or less developed countries have limited earning to provide somehow their basic needs and usual staff. Carrying goods is a regular task in life and several products have been invented to minimize efforts in this purpose. However, the price and features of most available products are out of the reach for the people of limited earnings. Stair climbing cart is very useful for those houses where a lift is not available. In this research, a modified mechanical design with eight wheels providing pause-rest feature has been represented with the equations of pulling force, constraints of stair dimensions and climbing mechanism. The ‘House of Quality Diagram ‘(QFD)’ has been added to accomplish the vision of further market research and customer satisfaction. The factor of safety and different types of stress have been determined for different types of loads and conditions. In addition, the details of the material with dimension, design and feasibility analysis have led this research to uniqueness.
La RDA dans le (rétro)viseur. Plaidoyer pour une autre perception
Authors: Hähnel-Mesnard Carola
Published: April 2020

Cette contribution s’interroge sur la façon dont la mémoire de la RDA est construite et transmise. Aujourd’hui, l’interprétation de l’histoire de la RDA se fait toujours essentiellement à partir du paradigme totalitaire, que ce soit dans les médias, dans la plupart des musées financés par l’État ou dans les productions cinématographiques à succès. Cette représentation est en décalage par rapport à la perception de la RDA telle qu’elle fut vécue de l’intérieur par la grande majorité de ses citoyens. Alors que la réflexion sur l’histoire du quotidien est présente depuis longtemps dans le monde de la recherche, les aspects qui en relèvent sont peu présents dans les représentations actuelles de la RDA. Le film Gundermann (2018) d’Andreas Dresen et Laila Stieler est un récent exemple d’une tentative entreprise par les Allemands de l’Est pour récupérer un pouvoir d’interprétation de leur passé. Globalement, la sous-représentation de ces derniers dans les positions-clés de la société influe également sur les possibilités de prise de parole sur ce passé.
Analyzing the tax system as a factor of social policy of the State
Authors: Sheina A.Yu. , Bakirova R.R. , Masich S.M.
Published: April 2020

Subject. We analyze the effect of the tax system on the social policy of the State.
Objectives. The study aims to assess the tax system as a factor of government’s social policy.
Methods. We employ methods of systems analysis, including qualitative, quantitative, factor analysis, generalization methods, comparison, as well as economic and statistical methods. Statistical reporting of the Federal Tax Service of Russian Federation, the Ministry of Finance of the Republic of Bashkortostan, and laws and regulations served as empirical and information basis of the study.
Results. We considered the classification of tax instruments for implementing the social policy of the tax system, and indicators of social policy efficiency; identified areas for stirring up the social function of taxes. They include the use of personal income tax as a tool of State social policy through the separation of taxpayer income to apply progressive tax rates based on the analysis of statistical data on taxpayers’ size and per capita income behavior. The paper defines the main factors of changes in the modern social policy of the Russian Federation.
Conclusions. At the present stage of tax system development, the paper highlights the increased level of social awareness. It is manifested in increased social control over effective functioning of State institutions. This control focuses on the quality of public services, cost effectiveness, and improved living standards.
A new suicide risk assessment tool in Nova Scotia, Canada
Authors: Sadek Joseph , Pyche Mary , Theriault Scott , Delva Nicholas , Chehil Sonia , Pilon David
Published: April 2020

Suicide is a major public health concern. In Canada, suicide is the ninth leading cause of death in all ages, with a rate of 10.3 deaths per 100,000 people. In Nova Scotia, Canada, 137 suicides were reported in 2016 [1]. Suicide risk assessment (SRA) and management are clinical competencies required for patient care. Strategies used for SRA include the use of formal self-report measures [2], personalized clinical interview however vital information about suicide risk may be missed during that unstructured assessment [3] and structured tool to supplement the clinical interview.
Piloting a long distance clinician scientist trainee mentorship match in Canada
Authors: Mirali Sara , Fan Kevin , Cook Elina K. , Marvasti Tina B.
Published: April 2020

Clinician scientists are physicians who are uniquely trained to bridge the gap between scientific discovery and clinical practice. However, the challenges of integrating research and medicine are often not directly addressed in the clinician scientist training programs. Furthermore, the demanding training path is financially and personally daunting. Previous studies have shown that MD/PhD trainees value the advice and expertise of senior mentors in navigating their academic career path. Despite this demand for mentors, there is a lack of formal mentorship initiatives at the institutional level across Canada. Recently, MD/PhD trainees have attempted to address this issue by implementing a nationwide mentorship match, with the aim of making mentorship more accessible to trainees across Canada.
Teacher attractiveness of ingressants in Pedagogy course
Authors: Silva Kíssila Ferreira Magro da , Corrêa Carla Patrícia Quintanilha
Published: April 2020

This article discusses the attractiveness of teachers among newcomers to the Pedagogy Course. The objective was to know the motivation for students to enter the first period of the course, since the teaching profession seems to be undervalued. The article describes and analyzes the current context of teaching, highlights the issue of teacher appreciation and career attractiveness. It also brings the results of field research conducted with the 65 students of the 1st period of the Pedagogy Course, from a state institution, in a city of Rio de Janeiro / Brazil, who answered a questionnaire in the 2nd semester of 2018. Research indicates that the Pedagogy Course was not the first college option for most students, who chose it for a variety of reasons. The most cited were: enjoying working with children and the opportunity to complete their studies.
Influence of cultural and traditional beliefs on maternal and child health practices in rural and urban communities in Cross River State, Nigeria
Authors: Ikechukwu H. Ukweh , Ofonime N. Ukweh , Kofoworola Odeyemi , Asukwo D. Ekanem
Published: April 2020

Objective:

The influence of cultural and traditional beliefs on key maternal and child health practices in the developing nations cannot be overemphasized. This study was carried out to determine the influence of cultural and traditional beliefs on key maternal and child health practices among rural and urban mothers in Cross River State.

Materials and Methods:

The study design was a comparative analytical cross-sectional study among mothers with under-five children in rural and urban households in Cross River State and the study populations comprised mothers of under-five children and traditional birth attendants in Cross River State. Sampling technique used to select respondents in the rural and urban sites was multistage sampling method and the sample size was determined using standard method of comparing two independent groups. For focus group discussion (FGD), the purposive sampling method was employed in both study sites. The study instrument was a semi-structured questionnaire and data obtained were analyzed using SPSS version 21.0.

Results:

Statistical analysis showed that the age of mother, husband, and marriage of women from the rural communities were significantly higher (P > 0.05) than that of women from the urban communities. Knowledge of the cultural beliefs of their people concerning maternal and child health is significantly higher in the rural communities than in the urban communities (P < 0.0001). Similarly, there was significant difference in the cultural dispositions of the rural and urban communities to maternal and child health practices (P < 0.05). The results of this study suggest that traditional beliefs influence maternal and child health-care practices in Cross River State, Nigeria.

Conclusions:

It is therefore concluded that cultural and traditional influences on maternal and child health practices are predominant in rural settings, with positive or indifferent cultural disposition to recommended practice being commonly associated with such practice. Maternal health education as well as education and engagement of traditional leaders are highly recommended. This should be focused at corrective reorientation toward the preference of recommended best practices that they currently do not support while sustaining the effort at encouraging other best practices.
London Dispersion Governs the Interaction Mechanism of Small Polar and Non-Polar Molecules in Metal-Organic Frameworks
Authors: Melix Patrick , Heine Thomas
Published: April 2020

In this work we investigate the adsorption of chlorinated methanes (CHxCl4-x, x=0-4) in a representative layer-pillar Metal-Organic Framework (MOF), the flexible MOF Ni2(ndc)2(dabco) (ndc = 2,6-naphthalene-dicarboxylate, dabco = 1,4-diazabicyclo-[2.2.2]-octane), also known as DUT-8(Ni). The guest molecules show a systematic increase of polarizability with increasing number of chlorine atoms, while the dipole moment exceeds 2 Debye for x = 2 and 3. Our ligand field molecular mechanics (LFMM) simulations show that, counter-intuitively, the host-guest interactions are mainly characterized by London dispersion, despite the molecular dipole moments reaching magnitudes as large as water. This highlights the importance of London dispersion interactions in the description of host-guest interactions.
Activation and Functionalization of C–C σ-Bonds of Alkylidene Cyclopropanes at Main Group Centers
Authors: Crimmin Mark , Kong Richard Y
Published: April 2020

Aluminum(I) and magnesium(I) compounds are reported for the C–C s-bond activation of strained alkylidene cyclopropanes. These reactions result in the formal addition of the C–C s-bond to main group center either at a single site (Al) or across a metal–metal bond (Mg–Mg). Mechanistic studies suggest that rather than occurring by a concerted oxidative addition, these reactions involve stepwise processes in which substrate binding to the main group metal acts as a precursor to a- or b-alkyl migration steps that break the C–C s-bond. This mechanistic understanding is used to develop the magnesium-catalyzed hydrosilylation of the C–C s-bonds of alkylidene cyclopropanes.
Evaluation of Flavonoids as 2019-nCoV Cell Entry Inhibitor Through Molecular Docking and Pharmacological Analysis
Authors: Bhowmik Deep , Nandi Rajat , Kumar Diwakar
Published: April 2020

In this study we aimed at the receipt binding domain of S protein and ACE-2 receptor as a promising drug targets against SARS-CoV-2. Flavonoids with anti-viral properties were taken as ligand for molecular docking. Selected flavonoids showed extremely good pharmacokinetics properties with good absorption, solubility, metabolism, excretion,distribution, bioavailability and minimal toxicity. These identified lead flavonoids may act as potential compound for the development of effective drugs and may help in controlling the rapid spread of SARS-CoV-2 by potentially inhibiting the virus entry into the host cell.
Blood Retention and Antigenicity of Polycarboxybetaine-Modified Liposomes
Authors: Ryujin Taka-aki , Shimizu Taro , Miyahara Ryo , Shimazui Rena , Yoshikawa Takuma , Kishimura Akihiro , Mori Takeshi , Ishida Tatsuhiro , Katayama Yoshiki
Published: April 2020

Zwitterionic polycarboxybetaines (PCBs) have gained attention as alternative stealth polymers whoseliposomal formulation and protein conjugates were reported not to elicit anti-polymer antibodies. Here, westudied the blood retention and antigenicity of liposomes modified with PCBs focusing on their chemicalstructures and doses. We compared PCBs with either 1 or 3 (PCB1 or PCB3) spacer carbons between thecarboxylate and ammonium groups. PCB3-modified liposomes had a short blood retention, whereas PCB1-modified liposomes demonstrated extended blood retention that was somewhat superior to PEGylated liposome.This confirmed the excellent non-fouling nature of PCB1 reported previously. Interestingly, PCB1-liposome aswell as PCB3-liposome elicited specific IgMs toward each PCB. The dose-dependent production of specificIgMs to PCB-liposomes was similar to that of PEGylated liposome, i.e., high doses of PCB-liposomes reducedthe production of specific IgMs, termed immunological tolerance. These results indicate the importance ofinvestigating the effect of dose to clarify the existence of antigenicity of stealth polymers
Combined Molecular Graph Neural Network and Structural Docking Selects Potent Programmable Cell Death Protein 1/Programmable Death-Ligand 1 (PD-1/PD-L1) Small Molecule Inhibitors
Authors: Wijewardhane Prageeth R. , Jethava Krupal P. , Fine Jonathan A , Chopra Gaurav
Published: April 2020

The Programmable Cell Death Protein 1/Programmable Death-Ligand 1 (PD-1/PD-L1) interaction is an immune checkpoint utilized by cancer cells to enhance immune suppression. There exists a huge need to develop small molecules drugs that are fast acting, cheap, and readily bioavailable compared to antibodies. Unfortunately, synthesizing and validating large libraries of small-molecule to inhibit PD-1/PD-L1 interaction in a blind manner is a both time-consuming and expensive. To improve this drug discovery pipeline, we have developed a machine learning methodology trained on patent data to identify, synthesize and validate PD-1/PD-L1 small molecule inhibitors. Our model incorporates two features: docking scores to represent the energy of binding (E) as a global feature and sub-graph features through a graph neural network (GNN) to represent local features. This Energy-Graph Neural Network (EGNN) model outperforms traditional machine learning methods as well as a simple GNN with an average F1 score of 0.997 (± 0.004) suggesting that the topology of the small molecule, the structural interaction in the binding pocket, and chemical diversity of the training data are all important considerations for enhancing model performance. A Bootstrapped EGNN model was used to select compounds for synthesis and experimental validation with predicted high and low potency to inhibit PD-1/PD-L1 interaction. The new potent inhibitor, (4-((3-(2,3-dihydrobenzo[b][1,4]dioxin-6-yl)-2-methylbenzyl)oxy)-2,6-dimethoxybenzyl)-D-serine, is a hybrid of two known bioactive scaffolds, and has an IC50 values of 339.9 nM that is comparatively better than the known bioactive compound. We conclude that our EGNN model can identify active molecules designed by scaffold hopping, a well-known medicinal chemistry technique and will be useful to identify new potent small molecule inhibitors for specific targets.
Non-Proteinaceous Complexes III and IV Mimicking Electron Transfer in the Mitochondrial Respiratory Chain
Authors: Modenez Iago , Macedo Lucyano , Melo Antonio F. A. A. , Pereira Andressa R. , Oliveira Junior Osvaldo Novais , Crespilho Frank
Published: April 2020

Synthetic biology pursues the understanding of biological processes and their possible mimicry with artificial bioinspired materials. We explore the redox properties of magnetic iron oxide nanoparticles to mimic the redox activity of complexes III and IV towards cytochrome c. We demonstrate that these nanoparticles, incorporated as non-proteinaceous complexes III and IV in a mitochondrial cell membrane model, catalyze electron transfer similarly to natural complexes. The associated molecular mechanism was experimentally proven in solution and in a Langmuir- Blodgett film; the protein-nanoparticle interactions are governed mainly by electrostatic forces, followed by electron transfer between the iron sites of the nanoparticles and the heme group. This work presents the first experimental demonstration that inorganic nanostructured systems may behave as proteins in the cell membrane.
Elucidating Biophysical Basis of Binding of Inhibitors to SARS-CoV-2 Main Protease by Using Molecular Dynamics Simulations and Free Energy Calculations
Authors: Sk Md Fulbabu , Roy Rajarshi , Jonniya Nisha Amarnath , Poddar Sayan , Kar Parimal
Published: April 2020

The recent outbreak of novel “coronavirus disease 2019” (COVID-19) has spread rapidlyworldwide, causing a global pandemic. In the absence of a vaccine or a suitablechemotherapeutic intervention, it is an urgent need to develop a new antiviral drug to fight thisdeadly respiratory disease. In the present work, we have elucidated the mechanism of bindingof two inhibitors, namely α-ketoamide and Z31792168 to SARS-CoV-2 main protease (Mproor 3CLpro) by using all-atom molecular dynamics simulations and free energy calculations. Wecalculated the total binding free energy (ΔGbind) of both inhibitors and further decomposedΔGbind into various forces governing the complex formation using the MolecularMechanics/Poisson-Boltzmann Surface Area (MM/PBSA) method. Our calculations revealthat α-ketoamide is more potent (ΔGbind= - 9.05 kcal/mol) compared to Z31792168 (ΔGbind= -3.25 kcal/mol) against COVID-19 3CLpro. The increase in ΔGbind for α-ketoamide relative toZ31792168 arises due to an increase in the favorable electrostatic and van der Waalsinteractions between the inhibitor and 3CLpro. Further, we have identified important residuescontrolling the 3CLpro-ligand binding from per-residue based decomposition of the binding freeenergy. Finally, we have compared ΔGbind of these two inhibitors with the anti-HIV retroviraldrugs, such as lopinavir and darunavir. It is observed that α-ketoamide is more potent comparedto both lopinavir and darunavir. In the case of lopinavir, a decrease in the size of the van derWaals interactions is responsible for the lower binding affinity compared to α-ketoamide. Onthe other hand, in the case of darunavir, a decrease in the favorable intermolecular electrostaticand van der Waals interactions contributes to lower affinity compared to α-ketoamide. Ourstudy might help in designing rational anticoronaviral drugs targeting the SARS-CoV-2 mainprotease.
Caracterização da Cobertura Vegetal no Alto Curso da Bacia do Igarapé do Mindu - Manaus (AM)
Authors: Albuquerque Natalia Ramos , Molinari Deivison Carvalho
Published: April 2020

O processo urbano acelerado ao longo dos anos dentro da cidade de Manaus - AM acabou ocasionando substituição parcial da cobertura vegetal por ocupações irregulares. Deste modo, o objetivo deste estudo é analisar o tipo de cobertura vegetal presente no alto curso da bacia hidrográfica do igarapé do Mindu, localizado entre a zona norte e leste da área urbana de Manaus - Amazonas. A metodologia do trabalho baseou-se em três etapas: pré-campo realizada mediante técnicas de geoprocessamento para identificação da área de estudo via  Qgis, monitoramento do trabalho de campo registrada por fotografias com auxílio do GPS (Global Position System), uso de VANT para adquirir imagens aéreas de alta resolução espacial, e o pós-campo resultando no processamentos das imagens e análise dos dados. Os resultados encontrados demostram concentração de espécies concentradas ao norte da bacia procurando identificar a distribuição e caracterização das espécies vegetais do tipo: Unidade de Conservação, Áreas Verdes, Fragmento Florestal, Área de Proteção Permanente (APP), Área de Proteção Ambiental (APA) e Corredor Ecológico.Characterization of Vegetation Coverage in the Upper Course of the Igarapé do Mindu Basin - Manaus (AM)A B S T R A C TThe accelerated urban process over the years within the city of Manaus - AM eventually led to partial replacement of vegetation cover by irregular occupations. Thus, the aim of this study is to analyze the type of vegetation cover present in the upper reaches of the Mindu stream, located between the north and east of the urban area of Manaus - Amazonas. The methodology of the work was based on three steps: pre-field carried out by geoprocessing techniques to identify the study area via Qgis, fieldwork monitoring recorded by photographs with the aid of GPS (Global Position System), use of UAV for acquire high spatial resolution aerial images, and the postfield resulting in image processing and data analysis. The results show a concentration of species concentrated to the north of the basin, seeking to identify the distribution and characterization of plant species such as: Conservation Unit, Green Areas, Forest Fragment, Permanent Protection Area (APP), Environmental Protection Area (APA) and Ecological corridor.Keywords: radiation, net radiation, photosynthetically active radiation, Caatinga, dry.
FOREIGN EXPERIENCE OF PROFESSIONAL TRAINING OF THE FUTURE MUSIC TEACHERS
Authors: Mykhaskovа Marina
Published: April 2020

The article deals with the comparative analysis of the system of music training of pedagogues-musicians abroad (in the countries of the European Union, Scandinavian countries, United States of America, People’s Republic of China and Japan) in particular, comparing these systems and selecting the most valuable experience for implementation in Ukraine. Particular attention is paid to the structure of music teacher education in Poland, Latvia, Finland, Germany, Hungary, Austria, Czech Republic, Slovak Republic, Sweden, Iceland, Norway, Great Britain, America, People’s Republic of China, Japan. The author of the article analyses the term of education in different countries; duration of stage education (Bachelor (Bc), Master (Mg), Doctor (Dr)); duration of study of the course; types of music activity; basic subjects; direction of educational subjects; music-pedagogical systems of outstanding musicians-pedagogues involved in the professional education process. It is analyzed that the common features for music education are: the orientation of education to the inner values associated with the development of musical skills, knowledge and abilities necessary for creativity and reaction to music; understanding and knowledge of the cultural environment and heritage; personal and community development through creativity, identity formation, personal development and social interaction. Music education systems abroad are characterized by the focus on the harmonious development of the personality, provide various forms of creative music playing on the material of folk, classical, contemporary music in their parallel comparison, develop perception and musical hearing through effective techniques.
INTRINSIC MOTIVATION OF STUDENTS DURING BLENDED LEARNING OF BUSINESS ENGLISH
Authors: Ogurtsova Olga , Petrova Svitlana Petrova
Published: April 2020

The article discusses the issue of improving the efficiency of teaching Business English to students of economic specialties using educational Internet resources. The described method of blended learning involves the active independent work of students with resources hosted on the platform www.edx.org and active discussion of the results of this work during the classroom. The results of the survey indicate a high motivation of students to learning Business English according to the main principles of the blended learning approach. According to the survey conducted in the framework of the first stage of experimental research, during the work with the offered educational materials of the Internet, the intrinsic motivation of students was at a high level. In particular, the students themselves found such work useful and effective for developing competence in listening, reading, writing and speaking. Observation of the practical classes showed that students’ involvement in the educational process has increased significantly. Students ‘subjective feelings about the effectiveness of their online learning resources were supported by objective data, including the students’ performance charts, which were recorded by the platform. All students successfully completed more than half of the proposed assignments. Based on the results of the study, it can be argued that the use of edx massive open online courses in the framework of blended learning method (both in Ukrainian and in a foreign languages) in the teaching practice of higher educational establishments is very promising for improving the quality of education not only in Business English but also in other professional disciplines. Moreover, the use of edx massive open online courses in the framework of blended learning method will help students to develop continuing education tools and high intrinsic motivation to use these tools in their future professional and personal growth.
FINANCIAL AUTONOMY OF UNIVERSITIES: EXPERIENCE OF GEORGIA
Authors: Vlasova Inna
Published: April 2020

The analysis of legislative support of higher education and strategic documents of education and science development of Georgia is carried out. As a result, the strategic tasks of further development of higher education in Georgia are clarified. They are: modernizing and aligning higher education programs with labour market needs in order to improve the quality and learning outcomes to stimulate personal development and employability. It is necessary to develop a stronger development-oriented and results-based quality assurance system; strengthen the research base of universities and the links between teaching and research to make knowledge creation, transfer, innovation and technology as integral parts of study programs; modernize the research infrastructure; improve access to good quality education, particularly for students with financial problems and for students with special needs through scholarships (merit-based, need-based) and student loans; develop public funding with incentives for implementing above-mentioned objectives and for acknowledging for relative cost differences between various types of study programs or institutions. Sources of funding for higher education institutions of Georgia are revealed. They are: tuition fees which are covered by the state study grant and state Master’s study grant (only with regard to an accredited higher education programme); funds received through private grants, contributions; research grants awarded by the state on the basis of competition; programme financing allocated by the ministries of the relevant fields. The main mechanisms of state funding, in particular state grants (vouchers) for students and funding of educational places according to priority educational programs are determined. Mechanisms of students’ financial support, such as merit-based grants, needs-based grants, and free places for learning in priority areas are provided. The level of financial autonomy of universities is analysed.
Influence of the use and the land cover of the catchment in the water quality of the semiarid tropical reservoirs
Authors: Cavalcante Herika , Cruz Patrícia Silva , Viana Leandro Gomes , Silva Daniely de Lucena , Barbosa José Etham de Lucena
Published: April 2020

The aim of this study was to evaluate some parameters of water quality of semiarid reservoirs under different uses and occupation of the catchment’s soil. For this, the reservoirs Acauã and Boqueirão, belonging to the Paraíba do Norte river watershed and Middle and Upper course sub catchments, respectively, were studied. For this, water samples were collected in August, September and October 2016. From these samples, total and dissolved phosphorus, nitrate, nitrite, ammonia, chlorophyll, dissolved and suspended solids were analyzed. In addition, images of the Landsat 8 satellite were acquired for the calculation of the Normalized Difference Vegetation Index (NDVI), and for the supervised classification of the use and occupation of the sub catchments. Thus, it was observed that, in general, the Acauã reservoir presented values of phosphorus and nitrogen and solids larger than the Boqueirão reservoir, due to the greater urban area, even though it had a smaller total area of the basin. Both reservoirs presented low vegetation rates and high areas of sparse vegetation and exposed soil, increasing the propensity to soil erosion and the transport of nutrients from the basin to the reservoirs, making water quality worse or impossible.
Statistical Modelling of Ultrasonic Pulse Velocity of Fly Ash Based Geopolymer mortar using response surface methodology
Authors: Zahid Muhammad , Shafiq Nasir , Ali Muhammad
Published: April 2020

The fly ash based geopolymer has emerged as a capable and sustainable binder material in construction industry. Ultrasonic pulse velocity (UPV) method is a non-destructive technique for investigating the mechanical performance of concrete. Experimental investigation was performed for studying the effect of NaOH Molarity, Na2SiO3/NaOH and curing temperature on the ultrasonic pulse velocity of geopolymer mortar. Experiments were designed based on central composite design (CCD) technique of response surface methodology (RSM). Statistical model was developed and statistically validated and found significant as the difference between adjustable R-squared and predicted R-squared less than 0.2. Finally, the optimized mix proportion was assessed for maximized value of UPV. Experimental validation on the optimized mix reveals the close agreement between experimental and predicted values of UPV with significance level of more than 95%. The proposed technique improves the yield, the reliability of the product and the processes.
Numerical investigation on heat transfer enhancement inside a rectangular microchannel with vortex generator using TiO2, Cuo-water nanofluids
Authors: Behaeen Arash , Nimafar Mohammad
Published: April 2020

One of the innovative ways to improve heat transfer properties of heat exchangers, is using nanofluids instead of traditional fluids. Due to presence of metal and oxides of metal particles in nanofluids structure, they have better potential in different environments and conditions than conventional fluids and having higher thermal conductivity causes improvements in heat transfer properties. In this research flow of two different nanofluids through a rectangular microchannel consisting of different number of longitudinal vortex generators (lvgs), has been investigated. Simulations conducted under laminar flow boundary condition and for different Reynolds numbers from 100 to 250. Considered volumetric concentration in this paper is 1, 1/6 and 2/3 %. Results showed, nanofluids and the LVGs remarkably enhance the heat transfer rates inside the microchannel. havg improved with increasing the nanoparticles volume concentrations and Reynolds number, whereas the opposite trends observed for pressure drop. havg improved for 4 to 12 and 9 to 18% for TiO2 and CuO nanofluids, respectively for different volume concentrations in simple microchannel. For lvg-enhanced microchannel the amount of improvements is about 9-14 and 5-10% for CuO and TiO2, respectively. Also using vortex generators alone improved havg for 15-25% for different number of lvgs.
Application of computer agent modeling for optimization of the assembly process
Authors: Ушакова І.О.
Published: April 2020

Computer modeling is a method for solving the problems of analysis or synthesis of a complex system based on the use of its computer model. Simulation, as a component of computer modeling, allows you to construct most of the possible states of the analyzed system. In this way it allows to correct the processes of assembling machines in a minimum time and with minimal costs, to foresee possible risks and to avoid unreasonable decisions regarding the organization of processes, to reduce material costs. Simulation gives the best results for modeling uncertain or probabilistic systems. Simulation, as a component of computer modeling, gives the best results for modeling systems with uncertainty or with a probabilistic nature. Mathematically calculating all possible variants of the system’s behavior is a laborious task, and using average values in the calculations gives inaccurate results. For assembly production systems, simulation modeling is used to select the optimal production organization parameters. The aim of this work is to build a computer simulation model that allows you to evaluate the impact of production factors (number of employees, operating parameters and type of assembly process) on the assembly process and substantiate the effectiveness of the model. The current assembly process of the machine was considered for modeling. The assembly process includes: two streams of verification, synchronization of request from these two streams, and a machine collection stream. The vacated line starts servicing the application that entered the system earlier than others. Such a discipline is called “earlier entered - earlier served” (FIFO - First In - First Out).s from flows, and a machine assembly flow. An optimization experiment was carried out after the construction and verification of the simulation model. The maximum value of profit was chosen as the objective function. Iterations were performed during an optimization experiment. The optimal number of employees was selected for two inspection flows and a machine assembly stream in the assembly shop. The first experimental result showed the effectiveness of the request flow synchronization method. The following optimization experiment showed the relationship between the number of workers in certain threads of the assembly process and profit. The results of using agent-based models for simulation can be used to optimize assembly processes.
Порівняльний аналіз сучасних методів прогнозування економічних показників торгівельного підприємства
Authors: Антипіна О.В. , Нeділько А.А. , Cкорін Ю.І.
Published: April 2020

Було визначeно призначeння фінанcового аналізу, як дієвого інcтрумeнту для підвищeння eфeктивноcті вeдeння народного гоcподарcтва та прийняття виважeних управлінcьких рішeнь, розглянуті цілі та завдання, галузі заcтоcування фінанcового аналізу, оcобо було підкрecлeно, що рeзультати фінанcового аналізу дозволяють виявити так звані вразливі міcця, що потрeбують оcобливої уваги, також були розглянуті мeтоди прогнозування та планування витрат обігу підприємcтва, був провeдeний їх порівняльний аналіз, визначeні їх нeдоліки і пeрeваги, оcобливо було підкрecлeно, що аналіз динаміки змін оcновних цінніcних cпіввідношeнь є оcновою фінанcового планування, а оцінювання динаміки cпіввідношeння та cтруктури, як доходу, так і витрат дозволить здійcнити eфeктивнe прогнозування вeличини прибутку підприємcтва, виходячи, при цьому, з завданого обcягу рeалізації, тобто було визначeно, що фінанcовий аналіз у cучаcних умовах cтає одним з головних eлeмeнтів управління та прийняття гоcподарcьких рішeнь.
Комбінований метод для розв'язання вироджених задач безумовної оптимізації
Authors: Задачин В.М.
Published: April 2020

Представлено метод другого порядку для розв'язання вироджених задач безумовної оптимізації, який є комбінацією двох методів: методу Ньютона та градієнтного методу. На кожній ітерації весь простір представляється як декартовий добуток двох підпросторів: ядра матриці Гессе та ортогонального доповнення до нього. На ядрі матриці Гессе працює градієнтний метод, а на ортогональному доповненні до нього  – метод Ньютона. При цьому застосовується параметр регуляризації чисельного методу для розділення простору на два ортогональних підпростори. Розглядається також квазі-ньютонівський варіант представленого методу. Ефективність квазі-ньютонівського варіанту метода підтверджується чисельними експериментами, які були проведені на загальноприйнятих тестових функціях для задач безумовної оптимізації.
Прогнозування пунктуації тексту на основі моделі BERT
Authors: Знахур C.В. , Знахур Л.В.
Published: April 2020

Багато актуальних NLP завдань, включаючи задачу авто пунктуації, залежать від ефективного вирішення завдання прогнозування – визначення того, який саме  токен повинен бути наступним. У даній роботі розглянута підзадача прогнозування наступного токену на основі попередніх. Основною проблемою існуючих підходів є те, що вони не однаково ефективні. З метою вирішення цієї проблеми у даній роботі розглядається використання двонаправлених кодерів моделі BERT з даними, які були токенізовані.
Використання чат-бота @es_economy_karkas_bot для онлайн консультації з експертною системою
Authors: Бурдаєв В.П.
Published: April 2020

Чат-бот (співрозмовник) – це програма, яка імітує людське спілкування на основі елементів штучного інтелекту. У статті представлені результати інтегрування чат-бота @es_economy_karkas_bot з експертною системою для організації консультування в режимі онлайн. Дано опис архітектури і реалізація імплементації чат-бота месенджера телеграм в експертну систему на базі системи “КАРКАС” – інструментальний засіб для побудови моделей баз знань. Розглянута структура і алгоритм взаємодії чат-бота і агентів експертної системи в онлайн режимі. Виконано аналіз можливостей створення чат-ботів в месенджері ТЕЛЕГРАМ, їх інтеграцію з експертами системи в сфері економіки.
Аналіз алгоритмів оцінювання відповідей на тестові завдання відкритого типу
Authors: Харітонов В.С. , Парфьонов Ю.Е.
Published: April 2020

У статті розглядається проблематика комп'ютерного оцінювання знань та навичок за допомогою тестових завдань відкритого типу. Алгоритмізація процесу оцінювання відповідей на такі завдання стикається з низкою проблем, головним чином, пов'язаних з аналізом текстів природною мовою. Досліджено алгоритми, які базуються на методі шинглів, близькості слів з вагами та критеріальному методі з використанням елементів теорії графів. Проведено їхній порівняльний аналіз.
Effects of Video-Taped Instructional Strategy and Retention of Senior Secondary 2 Chemistry Students in Lagos State
Authors: C. Job Gabriel , Opeyemi Akinboboye
Published: April 2020

This research investigated the effects of video-taped instructional strategy on the academic achievement and retention of senior secondary 2(SS2) chemistry students in lagos state. The continuous decimal academic achievement of students in this core science subject has been of major concern to stake holders in the education industry in lagos state in particular. The study adopted an experimental design of pretest – posttest factorial design.  The population for this study was made up of the 4500 chemistry students in Ikorodu and Kosofe LGAs, while the sample comprised 93 SS2 chemistry students gotten through multi staged method. The instrument used was Chemistry Achievement Test (CAT). The instrument was validated by experts in Educational Technology and Measurement and Evaluation while the reliability was derived through a test – retest method. Pearson product moment correlation coefficient ® was used to arrive at 0.78. Mean and standard deviation were used to answer the research questions, which indicated that students achieved better when taught with video-taped than conventional methods. On the other hand, t-test was used to analyze the hypothesis, which indicated significant difference between students taught with video-taped and conventional method, amongst others. And it was recommended that video-taped instructional strategies by used regularly in senior secondary schools in Lagos state amongst others.
İntihar Girişiminde Bulunan Ergenlerin Ebeveynlerinin Öğrenim Gereksinimleri
Authors: Önder Merve , Karakaya Dudu
Published: April 2020

Ergenlik dönemi, fiziksel değişiklere uyum çabasının olduğu ve rol karmaşasının yoğun olarak yaşandığı bir dönemdir. Karmaşık birdön em olmasından dolayı ergenlik döneminde birçok stresöre maruz kalınır. Stresörlerle baş etmede güçlük çeken ergenler, bir kurtuluş yolu olarak intihar davranışına başvurabilmektedirler.
Ergenlik dönemi intiharları son yıllarda tüm dünyada yaygın olarak görülmeye başlamış ve önemli bir halk sağlığı sorunu haline gelmiştir. Ergenlerde intihar oranları artış göstermekle birlikte, Dünya Sağlık Örgütü intiharın önlenebilir bir davranış olduğunu ve önlenebilirliğinin sağlanmasında bütün topluma rol ve sorumluluklar düştüğünü belirtmektedir. Önlenebilirliğin sağlanmasındaki rol ve sorumlulukların büyük bir kısmı sağlık profesyonellerine aittir. Sağlık profesyonellerinden biri olan hemşireler klinik ortamda, ebeveynler ise ev ortamında intihar girişiminde bulunan ergenler ile en çok vakit geçiren kişilerdir. Hemşirelerin ve ebeveynlerin olası bir intiharı erken dönemde farkedebilme ve uygun müdahale edebilme konusunda yeterli bilgi ve donanıma sahip olmaları gerekir. Bu derlemede, intihar girişiminde bulunan ergenlerin ebeveynlerinin öğrenim gereksinimleri ve belirlenen gereksinimlere yönelik hemşirelik müdahaleleri literatür ışığında gözden geçirilmiştir.
Perancangan Arsitektur Teknologi Informasi Rumah Sakit Dengan TOGAF (The Open Architecture Framework)
Authors: Segar Sain
Published: April 2020

Rumah sakit pada masa ini dan pada saat mendatang memanfaatkan dukungan teknologi berupa sistem informasi yang bertujuan untuk menyelaraskan sistem yang terpadu, salah satunya adalah Rumah Sakit TNI AU Dr.M.Salamun. sistem pada Rumah Sakit Salamun masih berupa system yang berdiri sendiri, terpisah, dengan ruang lingkup terbatas pada bagain - bagian yang memanfaatkannya sehingga kurang mendukung keberjalanan Rumah Sakit. Metodologi yang digunakanpadatesisini adalah TOGAF (The Open Group Architecture Framework), dengan bagian inti TOGAF, yaitu TOGAF ADM (Architecture Development Method). Tahap perancangan pada TOGAF ADM berupa empat domain arsitektur yaitu :arsitektur vision, arsitektur bisnis, arsitektur informasi, serta arsitektur teknologi pada keadaan rumah sakit saat ini dan keadaan target yang ingin dicapai. Selain itu, terdapat beberpa tools yang digunakan untuk menganalisis proses bisnis dengan menggunakan BPMN (Busines Prosess Modeling Notation) dan untuk menggambarkan Use Case menggunkan UML (Unified Modelling Language).Penelitiandilakukandenganmelihatproses bisnissisteminformasiRumahSakitdengantetapmengacupadakebijakan-kebijakan yang berjalan di RumahSakitTNI AU Dr.M.Salamun. Hasil dari penelitian ini adalah perancangan model arsitektur teknologi informasi SIMRS (sisteminformasirumahsakit)yang akan menunjang perbaikan kinerja layanan sistem informasi rumahsakit secara menyeluruhdandiharapkandapatmenyelesaikanpermasalahansistemiformasi yang masihparsialpadabagiantertentu.
MENGIDENTIFIKASI TAHAPAN-TAHAPAN METODOLOGI ANALISIS AUDIT SISTEM INFORMASI
Authors: Winariyani
Published: April 2020

AbstractAudit Sistem Informasi merupakan proses pengumpulan dan pengevaluasian bukti-bukti untuk menentukan apakah suatu sistem aplikasi komputerisasi telah menetapkan dan menerapkan sistem pengendalian intern yang memadai, semua aktiva dilindungi dengan baik atau tidak disalahgunakan serta terjaminnya integritas data, keandalan serta efektifitas dan efisiensi penyelenggaraan sistem informasi berbasis komputer.Disini kita akan mengidentifikasi tentang tahapan-tahapan metodologi analisis audit sistem informasi. Audit sistem informasi melakukan tinjauan atas pengendalian untuk menilai kesesuaiannya dengan kebijakan dan prosedur pengendalian serta efektivitas dalam menjaga aset perusahaan. Dengan kata lain Audit Sistem Informasi adalah proses pengumpulan dan pengevaluasian bukti-bukti untuk membuktikan dan menentukan apakah sistem aplikasi komputerisasi yang digunakan telah menetapkan dan menerapkan sistem pengendalian intern yang memadai, apakah aset organisasi sudah dilindungi dengan baik dan tidak disalah gunakan, apakah mampu menjaga integritas data, kehandalan serta efektifitas dan efisiensi penyelenggaraan sistem informasi berbasis komputer.