bluuebunny/crossref_metadata_2025_split huggingface dataset:
Existence Results For A Class Of Nonlinear Degenerate Elliptic Equations
Authors: Cavalheiro Albo Carlos 
Published: December 2019

Abstract
In this paper we are interested in the existence of solutions for Dirichlet problem associated with the degenerate nonlinear elliptic equations

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\left\{ {\matrix{ { - {\rm{div}}\left[ {\mathcal{A}\left( {x,\nabla u} \right){\omega _1} + \mathcal{B}\left( {x,u,\nabla u} \right){\omega _2}} \right] = {f_0}\left( x \right) - \sum\limits_{j = 1}^n {{D_j}{f_j}\left( x \right)\,\,{\rm{in}}} \,\,\,\,\,\Omega ,} \hfill \cr {u\left( x \right) = 0\,\,\,\,{\rm{on}}\,\,\,\,\partial \Omega {\rm{,}}} \hfill \cr } } \right.

in the setting of the weighted Sobolev spaces.
Preparation of ceramic nanofibers of iron vanadate using electrospinning method
Authors: Khaksarfard Yasaman , Ziyadi Hakimeh , Heydari Akbar 
Published: December 2019

Abstract
Because of special characteristics of vanadate compound, such as its sustainability, magneticity, high selectivity in reactions and catalytic character, this study aimed to preparation and analyzing novel ceramic iron vanadate (FeVO4) nanofibers. The ceramic nanofibers of iron vanadate were made by the combination of sol-gel and electrospinning methods. First, polyvinyl alcohol (PVA), as a matrix polymer, was mixed separately with ammonium metavanadate (NH4VO3) and iron (III) nitrate (Fe(NO3)3). As a result, the spinnable polymeric gel was obtained from the controlled mixture of these two precursors of ceramic material. Electrospinning of PVA/iron (III) nitrate/ammonium vanadate solution was done using an Electroris setup that enabled preparation of polymeric template nanofiber. Finally, iron vanadate nanofiber was obtained by calcination of polymer nanofiber at controlled temperature. The products were characterized with scanning electron microscope (SEM), energy dispersive X-ray spectroscope (EDX), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), vibrating sample magnetometer (VSM) and Brunauer-Emmett-Teller (BET) surface area analysis.
Safety Mechanisms in Relational Database as Part of the IT System of the Enterprise
Authors: Berski Szymon , Bilau Martyna 
Published: December 2019

Abstract
The work examines the effectiveness of the replication mechanism of the X production company database. In order to extend the functionality of the computer database of the enterprise, a model of its resource flow was created and an intensional and extensional part was created for a test database based on real enterprise resources. The model has been simplified to 3-rd normal form. The implementation was done in the MySQL database system. Two different operating systems were selected for testing: Windows and Linux. The database management system (DBMS) is working under the GPL license. MySQL DBMS offers many security mechanisms, and to secure the database, system of users permissions to objects have been selected and also an encryption of access passwords for users and connections to servers was used. A replication engine based on the binary log and the model “main server and backup server” was used to create a copy of the enterprise data.
Effect of Steel Cord Tension During the Lapping on Steel Cord Straightness After Lapping
Authors: Knapinski Marcin , Bobarikin Yuri L. , Martyanov Yuri. V. 
Published: December 2019

Abstract
One of the variable parameters in steel cord twisting technologies is the steel cord tension before final reel. Changing this parameter is used to produce steel cord with high quality of straightness. Steel cord straightness is the most important technological parameter after tensile strength. It is simple to change the value of steel cord tension with special mechanisms or devices in composition of cable machines and twisting machines. It is very important to know the measures of tension setting. Low tension causes bad quality of steel cord and defects. High tension may brake steel cord during the twisting and lapping. Also high tension may change the mechanical properties of steel wire in the steel cord construction. The influence of steel cord tension in the range from 9 N to 30 N on active equivalent stresses in wire cross section and macro displacements of wire contact points in steel cord construction was shown. Effect of steel cord tension during the lapping on steel cord straightness after lapping was shown. In this research the optimal tension for producing steel cord 2x0.30HT was defined with numerical simulation, finite element analysis and criteria method. The optimal value of tension for other steel cord constructions will change, because of number of wires and its hardness.
Study of the Vision System’s Impact on Increasing the Reliability of the Production System
Authors: Franek Jakub , Nalepa Bartłomiej 
Published: December 2019

Abstract
The purpose of the paper is to present the validity of the investment of a production plant in the development of production automation. The optimal use of production lines is the way to achieve the right return on investment and profits. Any unplanned stops reduce profitability of production and do not allow to achieve high production output. The introduction of various types of safety devices and process automation allows to prevent unwanted events. In particular, relieving employees of their responsibility and thus avoiding breakdowns caused by operator error can lead to an effective increase in Overall Equipment Effectiveness (OEE). The publication presents a study of the impact of the use of a vision system on increasing the reliability of the production system. As a result, an effective vision system based on a 3D sensor has been developed, which protects the production line against collision of the robot’s chuck plate with final products, thus not leading to the collision and destruction of the robot’s tools. The camera has been implemented in the robot’s control system, which excludes the need to change the settings, because the necessary change of work parameters is made automatically via the communication interface, thus making the work easier for employees when retooling the production machine between orders. Increasing the Overall Equipment Effectiveness and high level of Return Of Investment (ROI) allow for an unequivocal decision on the importance of the investment decision. The financial expense allowed for increasing the efficiency and productivity of production line, which contributes to the growth of the company’s competitiveness. The predictability of lead time has been significantly improved, which led to an increase in customer satisfaction.
The Economic Aspect in Improving the Production Process
Authors: Górska Monika , Daroń Marta 
Published: December 2019

Abstract
In the paper there was presented the role and importance of choosing appropriate quality management methods in making decisions on implementing corrective actions on the example of a selected metallurgical company. There was presented application of the results of production process improving methods, such as 5 Why and FMEA, to indicate corrective actions. Moreover, it was analyzed whether, after introducing these activities, it was possible to eliminate or limit defects in the production process. For this purpose, the level of the RPN index was recalculated – after the changes were introduced. Furthermore, the costs of defects before and after the introduction of corrective actions were estimated.
Low-carbon Transport in Czech-Polish Cross Border Area: Attitude of Czech and Polish Public to Electromobility
Authors: Jursová Simona , Burchart-Korol Dorota , Pustějovská Pavlína 
Published: December 2019

Abstract
The chapter deals with results of cooperation within the project Electromobility in Czech-Polish Cross border Area. The electromobility is presented in comprehensive environmental and social background. The introduction is aimed at transport emission of exhaust gases resulting in global warming and harmful impact on the environment quality. The environment analysis is reflected in view of transport and passenger cars production. The chapter presents results of society analysis defining its attitude to electromobility in the region. The methodology of public questioning was chosen to reveal possibilities for electromobility development in Czech-Polish cross border area. The questions of the survey were formulated to record a public attitude and view of electromobility. The respondents’ answers reflect their awareness of this new sustainable transport.
Work Safety During Usage, Repair and Maintenance of Machines – a Review of Work Safety in the Aspect of Accidents at Work
Authors: Małysa Tomasz 
Published: December 2019

Abstract
The usage, repair and maintenance of machines is one of the areas in which it still records a significant number of accident events. The occurrence of accidents at work generates social and economic costs for the enterprise. Therefore, employers should be take measures to improve safety at the workplace. The publication presents an accident analysis based on a comparison of the following measures: accident rates (i.e. number of accidents, event effects) and ratio analysis (frequency rate indicator and total accident rate indicator). Calculated indicators allowed to determine the accident rate during the usage, repair and maintenance of machines. The analysis covered a five-year period – i.e. 2013-2017. On the basis of the analyzes carried out, the proposal was presented of possible prevention solutions to reduce the number of accidents at work.
Management Styles as Element of Shaping Company Organizational Culture
Authors: Strycharska Dominika , Ogórek Marzena 
Published: December 2019

Abstract
The basis for the functioning of every organization and achieving the set goals are employees. It is they who shape the image, create the organizational culture and reputation of the company in the environment. Their competences, knowledge and skills determine the efficiency and effectiveness of the organization’s operations. Thanks to their work, products and services are created that meet social needs and thus organizational progress. The aim of this work was to conduct research on the organization’s ability to identify and retain the best employees, the ability to promote desired attitudes and behaviors, as well as to create a friendly and rewarding work environment that are key factors for business success. Updating the knowledge possessed by employees and developing new skills is often crucial in keeping the organization on the market.
The Influence of the Number of Polyurethane Anti-Vibration Mount on the Vibration Damping Efficiency of Steel Structure
Authors: Nowacki Krzysztof , Łakomy Karolina 
Published: December 2019

Abstract
The publication presents the results of research on the statistically significant impact of the number of layers on vibration damping properties of vibroacoustic mats. The research was carried out on the author’s research stand. The research was carried out on sandwich systems made of polyurethane foam. The impact force of the analyzed variables was determined on the basis of constructed multiple regression models, the so-called multifactor models and determination of the standardized value β. The research was carried out using the PQStat software. In the models being built, the significance level was p < 0.05.
Three statistically significant linear multivariate models for one-third frequencies were constructed:
• 0-20000 Hz – a model for the entire frequency spectrum analysed during the tests,
• 0-400 Hz – a model for frequencies generating construction vibrations that may affect the worker as general vibrations,
• 50-20000 Hz – a model for frequencies that generate construction vibrations that can cause auditory sensations (noise).
It was found: positive correlation of the number of layers in vibration damping systems with a third octave frequency of up to 400 Hz; negative correlation of the number of layers in vibration damping systems with a third octave frequency of 50 to 20000 Hz.
Environmental Protection in Industry 4.0. Opportunities and Threats in Selected Areas
Authors: Gajdzik Bożena , Oleksiak Beata , Pustějovská Pavlína , Tkadlečková Markéta 
Published: December 2019

Abstract
In recent years, the importance of production in cyberphysical systems – CPS characteristic of the new industry concept, which is Industry 4.0 – I 4.0, is gaining importance. Industry 4.0 enforces modification of traditional perception of production. The basis for changes in Industry 4.0 has become Internet of Things – IoT, which gives the opportunity to connect and communicate with each other such areas as mobile solutions, cloud computing, sensors, analytics and cyber security. By new technology, areas that previously operated in enterprises as separate systems can be combined and create new opportunities for industrial production (modernization of production methods and reduce employment). Industry 4.0 brings with it a number of new challenges for producers in the field of environmental protection, and related to the inclusion of cybernetic technology in physical production processes as well as distribution. Production starts and ends on the customer. Industry 4.0 is a collective term for technologies and concepts of value chain organization. The United Nations Organization for Industrial Development indicates the following environmental aspects in the perspective of the development of Industry 4.0, such as: climate change and limited access to resources, primarily to clean energy. It is assumed that changes in the production and functioning of economies will result in a decrease in the emission of harmful compounds into the atmosphere and increase the flexibility of activities for environmental protection. The purpose of this work is to present general directions of changes in the field of environmental protection in Industry 4.0. Authors present the following areas of change: energy management and material management. These areas are opportunities for environmental. In the category of threats, the growing costs of environmental protection and household expenses are pointed out. The work is based on a literature study and statistical data. Statistical data are used: integrated technologies, expenditure and costs of environmental protection, recycling of secondary raw materials and energy consumption for the EU and Poland.
Inconsistencies in the Production Process Resulting From the Employment Structure
Authors: Nowacki Krzysztof , Pawlak Szymon 
Published: December 2019

Abstract
Underestimating the duration of the production process is one of the basic factors determining the occurrence of delays in the duration of individual operations included in the production process. Occurrence of underestimation of production time brings many negative effects, which include, among others: underestimation of the company’s production capacity, accumulation of intermediate stocks, impeded planning of the production process (scheduling of the production process) and increase of production costs. The problem of erroneous estimation of the duration of the production process is most often found in production plants specializing in serial or mass production, implemented in a parallel or series-parallel system. The basic causes that underestimate the duration of the production process include errors in production scheduling, incorrect determination of durations of individual operations carried out as part of the analyzed production process, complexity of production operations and employment structure. The occurrence of delays in the production process can also be affected by accident events that generate underestimation and costs for the enterprise (including social and economic costs). In many cases, many algorithms are used to reduce underestimation and optimization and scheduling of the entire production process. The publication presents an analysis of the production process in which the duration of the production process is underestimated, taking into account the employment structure in the manufacturing company. The analyzes allow to determine the level of underestimation of operations of the production process depending on the form of employment (steel workers – employed under a contract of employment in the production plant, and temporary workers employed by temporary work agencies), identification of the reasons for the underestimation of individual production positions and the length of their time occurrence.
Solvent Extraction of Metal Ions from Sulfate Solutions Obtained in Leaching of Spent Ni-MH Batteries
Authors: Pospiech Beata , Gega Jerzy 
Published: December 2019

Abstract
The nickel metal hydride batteries (Ni-MH) are used in many electronic equipment, like cell phones, computers, cameras as well as hybrid cars. Spent batteries can be a rich source of many metals, especially rare earth elements (REE), such as lanthanum (La), cerium (Ce), neodymium (Nd), praseodymium (Pr), samarium (Sm), gadolinium (Gd). Ni-MH batteries also contain iron (Fe) as well as non-ferrous metals, i.e. nickel (Ni), cobalt (Co), zinc (Zn), manganese (Mn), etc. Leaching of such waste with sulfuric acid solutions is one among many methods recovering of useful metals in hydrometallurgical processes. The main aim of this work was separation of metal ions from pregnant leach liquor (PLL) by solvent extraction using phosphorous compounds and ionic liquids (ILs). The initial pH of the aqueous solution was 0.1. Di (2-ethylhexyl) phosphoric acid (D2EHPA), bis (2,2,4-trimethylpentyl) phosphinic acid (Cyanex 272), and phosphoniumionic liquid – trihexyl (tetradecyl) phosphonium bis (2,4,4-trimethylpentyl) phosphinate (Cyphos IL 104) were used as the selective extractants. The initial concentration of the extractants in an organic phase was equal to 0.1 mol∙dm−3. The obtained results show that the highest extraction efficiency was obtained for Fe(III) and Zn(II) in extraction experiments with 0.1 M D2EHPA at pH of 0.1. Ni(II), Co(II) and REE remained in the aqueous solutions. In the next stage, REE were extracted with the mixture of 0.1 M Cyanex 272 and 0.1 M Cyphos IL 104 at pH equal to 3.8. Finally, Ni(II) and Co(II) ions were efficiently removed from the aqueous phase using 0.1 M solution of Cyphos IL 104 at pH around 5.4.
Analysis of Selected Aspects of Knowledge Management in the Context of Their Impact on the Quality Level in Metallurgical Enterprises
Authors: Prusak Rafał , Kardas Edyta 
Published: December 2019

Abstract
The review of definitions allows to state that knowledge management in enterprises is a complex, multi-aspect process requiring the implementation of a number of interrelated mechanisms and instruments. Sharing knowledge can increase employee productivity, team performance and the ability to transform diversity into creativity and organizational innovation. Sharing of knowledge in the enterprise should be implemented both in a formal and informal way and be supported by appropriate communication mechanisms, employee exchange programs, job rotation, mentoring relations, techniques Only a well-constructed, implemented and modified system can ensure achieving the intended goals related, among other things, to ensuring the proper functioning of quality assurance mechanisms. and tools for assessing teamwork, a z system promoting creativity and cooperation. The main purpose of the publication is to present the results of research conducted on a sample of 22 enterprises regarding the analysis of the extent of enterprises’ use of knowledge and human capital potential to improve the quality management. The research focused mainly on the impact of selected elements of management of knowledge and human capital on the level of employee awareness, as well as the number and type of non-compliance of products. The study used a questionnaire and statistical analysis of data from manufacturing processes.
Analysis of use of Methods and Quality Management Tools in a Group of Production Enterprises
Authors: Skuza Zbigniew 
Published: December 2019

Abstract
The publication presents the results of research on the scope of practical use of available methods and tools of quality management by enterprises. The analysis was based on surveys conducted at the Production Management Institute of the Faculty of Production Engineering and Materials Technology of the Częstochowa University of Technology. The presented study applies only to the information collected so far as the research work commenced is still being continued. Currently, data (correctly completed questionnaires) has been collected from fifty one small, medium and large production companies located primarily in the Śląskie and Łódzkie region. Both the organizations surveyed for the needs of this project and the cases cited in the literature indicate that the group of the most commonly used tools and methods is quite limited and in a sense comes down to the most known. This situation may partly result from the specifics of the industry and the nature of production. In addition, providing questionnaire response suggestions (as examples, the most frequently used methods and techniques) may have influenced the choices made by the respondents. At the same time, in some cases, low awareness or insufficient substantive knowledge may have contributed to the belief among the respondents that the techniques are implemented in the enterprise while in reality these techniques have never been used. All remarks and observations noticed at this stage of the research will be taken into account in subsequent analyzes.
Research of the Impact of the Heating Rate on Adhesion of Scale Arising in the Process of Heating of the Steel Charge Before the Plastic Reworking
Authors: Boryca Jarosław , Kolmasiak Cezary , Wyleciał Tomasz , Urbaniak Dariusz , Kizek Jan 
Published: December 2019

Abstract
Before steel materials are subjected to an appropriate heat treatment, they must be preheated. During this process scale is formed, which can be a problem in the proper heat treatment of the steel charge. The preheating process of the steel charge is carried out under specific conditions – parameters. These conditions determine certain properties of scale. One of the most important issues in this context, important from the point of view of the potential removal of scale from the charge surface, is the correlation of the heating process temperature and the adherence of the scale to the steel substrate. The paper presents the results of such research and their discussion. In addition, the methodology for measuring the scale adhesion to steel substrate is presented. Mathematical relations endearing impact of heating rate on the scale adhesion have been developed.