bluuebunny/crossref_metadata_2025_split huggingface dataset:
Advantages and Disadvantages of Using Methane from CNG in Motor Vehicles in Polish Conditions
Authors: Górniak Adam , Midor Katarzyna , Kaźmierczak Jan , Kaniak Wojciech 
Published: October 2018

Abstract
The current problems related to air pollution in Europe, but also in Poland, are forcing the search for solutions aimed at significantly reducing the amount of solid particles harmful to humans in the air. Road transport is responsible for almost half of the pollution, as it releases nitrogen oxides into the air. In view of the above, the authors of the article want to turn attention toward methane as a fuel alternative traditional ones, pointing to the possibility of its use by Poland and presenting its advantages and disadvantages.
Use of Triz SU-Field Models in the Process of Improving the Injector of an Internal Combustion Engine
Authors: Chybowski Leszek 
Published: October 2018

Abstract
The article describes a method for analyzing and solving problem situations with the use of Su-Field models and 76 inventive standards. These tools are part of the “Theory of Inventive Problem Solving”. The author has presented the basic concepts of Su-Field models, including in the compilation of the most commonly used substances their fields and types of interactions in Su-Field models. The inventive standards have also been presented and grouped. Attempts have been made to solve two undesirable situations that occur during the operation of a complex technical system, which is the fuel injector of the self-ignition engine. Problem situations related to insufficient impact were modelled - too low tightening of the injector spring, and negative (harmful) interaction - erosive wear of the holes in the atomizer nozzle. Using the inventive standards of Class-1 and Class-2, general solutions to these problems have been found. After the transformation, exemplary detailed ways of solving the aforementioned problems have been presented in order to improve the design of the injector for these models. A summary and comments on the applicability of the presented methodology, regarding such complex technical systems, have also been presented.
Exploitation Policy in the Aspect of Industry 4.0 Concept – Overview of Selected Research
Authors: Timofiejczuk Anna , Brodny Jaroslaw , Loska Andrzej 
Published: October 2018

Abstract
The article is a review of completed research on developed and implemented innovative and technologically advanced technical systems. According to the Industry 4.0 concept they can have a significant impact on the efficiency of production processes and product development. In this perspective, the key aspect seems to be maintenance management of technical systems, realized both in the operate phase as well as during service and repair works. There were discussed research results of authors and developed application solutions supporting decision-making processes, in terms of three main periods of realization of exploitation processes: short, medium and long-term.
Initial Excitation Issues of Synchronous Generator with VSI Inverter in Varying Rotational Speed Operation
Authors: Kozak Maciej 
Published: October 2018

Abstract
Synchronous self-excited generators still are and probably will be the most popular 3-phase alternators installed in inland power stations so onboard of seagoing ships. Because of fuel savings and environmental restrictions Diesel, dual-fuel and gas propulsion engines for alternators of wide-range varying revolutions drives are increasingly used. There must be efficient way of creating 3-phase voltages of desired constant parameters ensured when generator produces variable amplitudes and frequencies of voltages because of changing rotational speed. As the control method modified field oriented control widely used with squirrel cage induction machines was chosen. This control method involves decoupling of currents and control voltages to flux and torque components and keeping them in optimal (orthogonal) condition. In order to obtain proper excitation and operation of such generator several factors have to be taken into account. Nonlinear dependence of voltage generated from rotational speed of self-excited synchronous generator is one of the factors that affects initial excitation process thus specific control method while generator startup. Theoretical background of synchronous generator excitation and voltage source inverter adopted FOC control method along with experimental results obtained in laboratory test bench of 5,5 kW generator and conclusions were presented.
Analysis of Powered Roof Support Operation Based on a Virtual Driver
Authors: Szurgacz Dawid , Brodny Jarosław 
Published: October 2018

Abstract
The article presents the results of tests and analyses of control functions performed by a powered roof support which is the basic part of a powered longwall system. The research was based on an innovative registration and measurement system dedicated to this specific range of tests. The basic element of this system is a virtual driver. It is equipped with input and output systems to connect standard physical voltage signals. The tests were carried out on a prototype powered roof support type ZPR- 15/35-POz. The presented research methodology and obtained results are an element of new research methods developed for powered support based on virtual controllers. The applied solution generates less costs than the devices currently used, while its functionality is significantly greater. The system developed by the Authors supports innovative and, to a certain extent, intelligent IT solutions for testing control elements. This developed system is suitable to be applied in a wide range of research such as diagnosis of mining machinery control elements and other industries in the near future.
Mitigating the Risk of Documentary Discrepancy in Process of Estonian Export Letters of Credit Transaction
Authors: Alavi Hamed , Kerikmäe Tanel 
Published: October 2018

Abstract
The main subject of this paper is to study relations between metrics which affects payment risk under documentary letters of credit (DLC) from the exporters perspective in Estonia. This will result in reducing the risk of documentary discrepancy in presentation of documents to banks, decrease relevant costs to rectification of discrepancies which are nothing but a loss to exporter and improving the flow of international trade. For this purpose, the author takes an empirical approach in his strive to find answer to following questions: What are different types of discrepancy in Estonian export landscape? How relevant are deferent attributes of the DLC to attributes types of discrepancy? What measures should be in place to prevent risk of documentary discrepancy in DLC operation? (In Estonian export trade).
Mitigating Uncertainties in Decision Making in Early Phases of RFID Implementation
Authors: Gładysz Bartlomiej 
Published: October 2018

Abstract
Radio Frequency Identification (RFID) is still a relatively new technology for many manufacturing and logistics companies. These companies experience uncertainties about RFID implementation, so they take steps to mitigate them. This article presents multiple case studies to design a conceptual framework to mitigate such barriers. The goal of this research was to test propositions that companies: often are not convinced about the maturity and performance of RFID technology; perform typical actions to test uncertainties; and need proof of the benefits of RFID technology before implementation. It was demonstrated that companies conduct proof of RFID technology activities (demonstrations and reference visits) to test RFID performance. These are required to test the technology in operation. Conclusions of this research may serve RFID systems providers and end users of technology by facilitating a better understanding of decision making processes during early phases of RFID implementation.
Technical Infrastructure of “Smart City”: Needs of Integrating Various Management Tasks
Authors: Kaźmierczak Jan , Loska Andrzej , Kučera Marian , Abashidze Irakli 
Published: October 2018

Abstract
In the article the idea of the “Smart City” is analysed mainly from the view point of technology. The author presents in the first part of the paper the brief review of technical issues connected with implementing the concept of “Smart City” into practice. These review is illustrated in the second part of the paper by some practical results, which are treated as a background for formulating a research problem which is tried to be presented in the third part of the paper: the problem of recognizing needs in the complex field of activities, assessing these needs and - basing on results of such an assessment - designing some integrated solutions that should be used in management of the identified resources. The final part of the paper contains some conclusions and introduces directions for further research.
Improvement of Production Processes with the Use of Lean Manufacturing Tools
Authors: Furman Joanna , Kuczyńska-Chałada Marzena , Poloczek Roksana 
Published: October 2018

Abstract
Growing competition, clients’ requirements as well as advances in technology make modern industrial enterprises search for a way of achieving and maintaining strong position on the market. One of the principal and at the same time necessary conditions to achieve this aim is continuous development of all of the processes in order to fulfil various clients’ expectations. Enterprises make use of different concepts and management methods which in significant way upgrade ongoing processes by raising their efficiency. One of such is the concept of ‘lean’ production - Lean Manufacturing. Management according to Lean Management rules allows to produce more with the use of less resources - at the same time approaching the aim which is to deliver clients the exact product they want. The process of resources use limitation is not easy to perform however, the concept of Lean Manufacturing by the application of chosen tools allows successfully and effectively to introduce ‘lean’ model of management in an enterprise and undertaking following improvement activities in every of its field.
Challenges Faced by Businesses in the Mining Industry in the Context of the Industry 4.0 Philosophy
Authors: Sukiennik Marta 
Published: October 2018

Abstract
This article presents the challenges that mining companies have in the face of the Industry 4.0 philosophy. Transformation of mining businesses into Industry 4.0 appears unavoidable. Due to the specific nature of the sector, the transformation will not be an easy one. This paper discusses the obstacles and challenges related to the transformation of businesses in the mining industry into the Industry 4.0. The history of industrial revolutions was presented, also as the idea of Industry 4.0 with its basic components. The concept of Industry 4.0 is also outlined and the studies which indicate the key issues in the transformation process are also cited. Based on these studies, it can be seen that the vast majority are issues in the field of production engineering and properly educated and qualified staff. Four main areas in which transformation into Industry 4.0 should be taking place are identified. Particular emphasis is placed on the area of technology and organizational culture. The mutual relations of management functions and ICT technologies have also been presented, which is one of the elements of the idea of Industry 4.0. Finally, the potential benefits for the organizational culture of the business of implementing the Industry 4.0 concepts are discussed.
Penal Law Protection of a Production Enterprise Employee in the Light of Obligations on the Occupational Safety and Health
Authors: Kąkol Cezary 
Published: October 2018

Abstract
The article discusses criminal law regulations whose task is to protect employees from imminent dangers to life and health and resulting from the violation of health and safety at work. Therefore, the key offenses of art. 220 (Act - Penal Code, 1997) from the point of view of criminal responsibility were subject to analysis, as well as the premises that determine it. In this way, an attempt was made to define the protection and responsibility framework both in the subjective and objective dimension. In the further part of the study, the regulations protecting the life and health of employees with other penal regulations of a general nature were discussed, also in the context of criminal threat dimensions, as well as the premises for not being punished by the perpetrator.
Environmental Performance of the Technology of Production of Bimodal Polyethylene (HDPE) with the Application of LCA Techniques
Authors: Graczyk Magdalena , Kaźmierczak-Piwko Leszek , Ganczewski Grzegorz 
Published: October 2018

Abstract
The paper discusses the issue of environmental management in chemical industry. The aim of the paper is develop reliable information about environmental footprints of the technology of production of bimodal polyethylene HDPE by means of the diagnostic tool Life Cycle Assessment with the application of the ReCiPe Endpoint (H) method of SimaPro 8.5 software
Effect of Human Factor on Product Quality in Manufacturing Activities
Authors: Gruszka Sara , Gašpar Štefan 
Published: October 2018

Abstract
Human factor, often referred to in the literature as human resources, is an important type of resources in an enterprise in ensuring the highest possible quality of products and meeting the needs of customers. The paper presents the question of influence of human factor on the quality of manufacture of the finished product in individual stages of the production process. This problem was presented based on literature analysis and on observations in a production business. Due to the ever-increasing significance of human influence on product quality, this issue is not only very timely, but is constantly being developed.
“Tell Me Where You Shop, and I Will Tell You Who You Are”: Czech Shopper Profiles According to Traditional, Large-Scale and Alternative Retail Options
Authors: Spilková Jana 
Published: October 2018

Abstract
Traditional, ‘post-traditional’ large-scale, and ‘alternative’ food shopping options are used in this paper to address the following questions: Who are the customers of these different retail formats? Is it possible to discern certain types of shopper according to retail formats? Do alternative food networks attract significantly different consumers than traditional forms and large-scale outlets? Relatively unique data collected in an omnibus survey by The Centre for Independent Public Opinion Research during 2014, 2015 and 2017 (n = 3,168) are used in this analysis. The consumption habits and preferences of a representative sample of the Czech population were subject to investigation. Results are presented mainly by descriptive statistics and the testing of hypotheses on the similarity or difference of given shopper populations by contingency analysis (associations between characteristics use contingency coefficients). A profile of shoppers according to food provisioning options is presented, and demographic, socio-economic and geographic factors influencing current trends in the shopping behaviours of Czech consumers are analysed. Significant differences between the customers of diverse retail formats and alternative possibilities to acquire food are among the most important distinguishing factors characterising Czech shoppers today.
Simulation Analysis of Extended Kalman Filter Applied for Estimating Position and Speed of a Brushless DC Motor
Authors: Chojowski Maciej 
Published: October 2018

Abstract
The purpose of this paper was to present a method for the estimation of the rotor speed and position of brushless DC (BLDC) motor. The BLDC motor state equations were developed, and the model was discretised. Extended Kalman filter has been designed to observe specific states from the state vector, needed for the sensorless control (rotor position) and to determine the speed, which may be useful to use as a feedback for the controller. A test was carried out to determine the noise covariance matrices in a simulation manner.
Risk perception among the workers in radiotherapy facilities located in North Eastern States, India
Authors: Singh Thokchom Dewan 
Published: October 2018

Abstract
In the radiotherapy practice, regulator defines risk in terms of physically measurable quantities and attempt to implement the results obtained from the risk assessment of this practice, using quantitative approach. Although such approach has significantly brought down radiation dose, injuries and fatalities to the workers as compared to the radiotherapy practices before World War II, the objectivity concept of risk that limits the assessment regarding physically measurable quantities is widely urged throughout the world. This study examined how the risk associated with radiotherapy practice has been perceived, and experienced by both professional and non-professional workers in the radiotherapy facilities located in Manipur, Meghalaya, and Assam. This study found that professional and nonprofessional workers exhibited different risk perception on the same physical risk. Such different risk perceptions influenced the establishment of radiological protection systems in the facility. Non-professional workers are more likely to be the affected group in a facility having weak radiological protection systems.
Application of Contemporary Equated Yield and Dcf Explicit Growth Methods in the Valuation of Over-Rented Properties in a Recessionary Period: A Case Study of Nigeria
Authors: Uwaifiokun Vincent 
Published: October 2018

Abstract
Valuations have always been time specific and, if properly undertaken, are supposed to give a true reflection of property market conditions at any given point in time. In periods of economic decline, when properties are leased or tend to exchange hands at rents or prices lower than their true market value, a need to capture the explicit growth rate associated with an instability in the property market arises. With the Nigerian economy currently facing its worst recession in years, the onus is on valuers to adopt contemporary methods of valuation which seek to mirror the true situation of the property market at any point in time; something which, hitherto, conventional methods of valuations have failed to do. This paper therefore takes a pilot survey of the types of investment valuation models currently adopted by valuers when carrying out valuations of reversionary properties in a recession. The study seeks to highlight the knowledge gap of valuers, both in practice and in the academia, concerning the use of the Equated yield and DCF explicit growth method of valuation, and hence enlighten them and the general public on its use as a more appropriate method of valuing properties during a downturn.
15 Myths about Market Value
Authors: Kucharska-Stasiak Ewa 
Published: October 2018

Abstract
Market value is one of the most difficult notions in economics. It is also one of the most puzzling in the valuation industry, although its definitions can be found in the International Valuation Standards, European Valuation Standards, RICS standards and national standards. This value tends to be given different interpretations and misconceptions surrounding it are shared by many members of the property valuer community. The many ways in which property market value is understood leads to misvaluations and significant variations between valuation results, which are damaging to the prestige of the property valuation profession. This article explores areas giving rise to the misinterpretations of property market value to provide a critical review of the existing views, and to put forward arguments explaining why they should be revised. To this end, a critical literature review and observations made by the author during discussions with valuation professionals taking skill-improvement courses, scientific conferences on valuation methodology and practice, and entry exams for the profession of property valuers are used. Three main areas conducive to the emergence of myths have been identified: the interpretation of property market value (four myths), the process of arriving at property market value (ten myths) and the interpretation of valuation results (one myth). The myths are challenged on the grounds of the market value concept and its interpretation as used in economics.
Is recurrent Kikuchi-Fujimoto disease a precursor to systemic lupus erythematosus?
Authors: Horino Taro , Ichii Osamu , Terada Yoshio 
Published: October 2018

Abstract
Kikuchi-Fujimoto disease (KFD), also known as histiocytic necrotizing lymphadenitis, is a rare, benign, self-limiting disease characterized by cervical lymphadenopathy and fever. Since KFD was first reported in 1972, the validity of this clinical entity has been controversial and its aetiology remains unknown. Herein, we report a case of a patient with KFD, which was believed to be associated with systemic lupus erythematosus.
Production Systems Planning and Databases in Assembly
Authors: Lecký Šimon , Václav Štefan , Michal Dávid , Necpal Martin 
Published: October 2018

Abstract
Paper deals with the design of assembly workplaces and systems. The aim is to provide a solution to the problems in the field of the assembly systems design and planning. One of the goals is to design a solution to the design of assembly workplaces. The focus of the research is therefore a proposal of the design methodology of the assembly workplaces and systems, and thus the development of integrated methodological procedure and tools. The introductory part is devoted to the current state of assembly workplaces, assembly systems and their planning. On the basis of the theoretical knowledge, an analysis of the assembly systems and workplaces is carried out according to the pre-selected criteria. It is necessary to develop the classification of assembly systems and workplaces in terms of product or assembled entities. Individual sections of the paper are devoted to the design of databases for the needs of designing the assembly workstations and systems.
The Main Research Directions in CA Assembly Analysis and Assembly Workstation Design
Authors: Václav Štefan , Senderská Katarína , Mareš Albert 
Published: October 2018

Abstract
The article deals with main research direction in the field of assembly process analysis and assembly workstation design. The basic applied methods and tool in the mentioned research direction are a part of digital factory concept. The paper presents the application of knowledge system for DFA analysis, computer aided assembly, workstation design and application of virtual reality.
Laboratory for Drawingless Manufacturing
Authors: Koštál Peter , Mudriková Andrea 
Published: October 2018

Abstract
To achieve quick response of production, it is necessary to abandon the traditional form of production process planning. Nowadays, most of the products are designed by using CAx software. The product design 3D model contains not only the geometrical data of product, but may contain a part of the process plan and technological data as well. The process plan is important to enter the process of manufacturing of various precision engineering components of complex shape. Using the highest level of programming through graphical engineering system, a 3D model and the ISO programs using CNC machine tools were designed.
Plasma Polishing of Stainless Steels – The Electrolyte Concentration Vs. Gloss Level
Authors: Podhorský Štefan , Bajčičák Martin 
Published: October 2018

Abstract
The technology of plasma polishing in electrolyte is considered as environmental friendly alternative to the common electrochemical polishing process. The solutions of the electrolyte use no acids or toxicants, but the environmental safe, low concentrated aqueous solutions of various inorganic salts are used instead. The dependence of the gloss level of the treated surface upon the electrolyte concentration as well as upon the voltage is examined in this paper. The specimens of stainless steel were used for plasma polishing in ammonium sulphate based electrolyte. The influence of the voltage on the overall properties of the process is discussed, as well.