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Defect Analysis of Bearings with Vibration Monitoring and Optical Methods
1-12Views:271Diagnosis of bearings with advanced methods gained remarkable roles in the previous years. This article focuses on the manufacturing defects and methods to reveal and classify them. During manufacturing several faults could emerge because of the grinding operation, tool wear and chatter vibration. Inproper handling of the bearing parts because of the collosion to each other and the storing box that causes deformation. To reveal these problems several methods are applied in industry. For deeper surface analysis nitric acid can be used to initate the finished surface of the roller then natrium-carbonate that nautralize the elements. Vibration analysis in its standard Fourier form is not a new achivement but other mathematical tools could be applied to condition monitoring such as wavelet transform. It is an efficient tool for analyzing the vibration signal of the bearings because it can detect the sudden changes and transient impulses in the signal caused by faults on the bearing elements. In this article five different wavelets, Daubechies, Gaussian, Coiflet, Mexican hat, Meyer are compared according to the Energy to Shannon Entropy ratio criteria to reveal their efficiency for fault detection.
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Comparison of greywater treatment processes with coagulating agent and oxidizer
99-106Views:208In our research synthetically produced greywater samples were treated with oxidative and coagulating agents after pre-treatment them by filtration on various filters. We characterised the quality of greywater samples with several parameters. We investigated these parameters on the untreated, pre-treated, and treated samples as well. We evaluated the efficiency of the treatments by measuring the characteristic parameters. The greywater treatment is a very important and effective opportunity for the reasonable freshwater usage. This type of treated water can be suitable for toilet flushing or irrigation. There are a several methods known from the literatures to preparation the greywater samples to reuse. We compared two of these methods in this article.
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Control Valve Testing During Operation
11-18Views:158The most commonly used control technology in building engineering is mixing. The purpose of the measurement is to find out what effects have the different control valve position combinations on the system. How the mixing efficiency changes in these cases.
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Investigating the Development Impact of the Reorganized Quality Control System on One of the Public Service Provider’s Pers
226-241Views:188At the investigated public service providers’ personal customer service they did significant changes were made in the field of quality control since April 2017. A method which existed and was used for a long time was modified, which had one of the most important objectives from a management aspect to help the development of the administrators in order to provide high quality. During our research we mostly focused the development impact of the modified system. We wanted to obtain an answer whether the new system is better for promoting the development of the administrators than the former method and to what extent administrators require feedback related to their job as well as whether this system is properly inspected and controlled by leaders. During the research we targeted three focus points related to the development aspect: self-check, constructive feedback and the degree to which seated work is controlled. Based on the results of the investigation we draft such suggestions which can promote efficiency if necessary and possibly even make the operation of the system more efficient.
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Water Shortage in Jordan
277-286Views:614Water shortage in Jordan is considered to be one of the main challenges that face the country throughout the years. In this manuscript all aspects of this issue will be highlighted. In this article, first, the water situation inputs, contests and outputs will be discussed. Secondly, there will be a detailed study about the ‘WADI AL-ARAB’ Project which is funded by the European Investment Bank and managed by the Yarmouk Water Company, its missions, assets and workflow. Finally, the Improvement of Energy Efficiency in the water sector, project aims, framework, and the major findings expected as a result of these analysis will be highlighted. This document presents the essential elements of a work that required a long time, an enormous effort and a hard work to collect all the data from several sources such as the Jordanian Ministry of Water and Irrigation (MWI), the Water Authority of Jordan (WAJ) and the European Commission (EU Official Website) and analyze them. Also, all the information listed about “WADI AL ARAB” Project was collected from multiple site visits.
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Examination of Z Generation’s Motivation and Expectations on Higher Education
1-13Views:661Today’s students at secondary schools, the so-called Z generation will be the customers in higher education in the near future. Members of the generation 'Z' were born between the early 1990’s and at the end of the 2000’s and significantly differ from the previous generation Y. They are called as Sharing Generation and Digital Generation as well. They have special learning habits and special expectations about learning, teaching and theories. These facts bring up a question about suitability and efficiency of traditional and actual methods in higher education in connection with their teaching and personal development. In this research expectations of students in year 11 will be examined about the higher education in general and with special regard to the business higher education.
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Numerical Model Analysis of Myring–Savonius wind turbines
180-185Views:313Nowadays the importance of renewable energy is growing, and the utilization of the low wind energy potential is getting crucial. There are turbines with low and high tip speed ratio. Turbines with low tip speed ratio such as the Savonius wind turbine can generate adequate amount of torque at low wind velocities. These types of turbines are also called drag machines. The geometry of the blade can greatly influence the efficiency of the device. With Computational Fluid Dynamics (CFD) method, several optimizations can be done before the production. In our paper the Savonius wind turbine blade geometry was based on the so-called Myring equation. The primary objective of this paper was to increase the power coefficient by modelling the effect of the wind on the turbine blade. For the sake of simplicity, a 2D cross-sectional area was investigated in the simulation with ANSYS CFX 19.1.
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The Sustain of the Leadership Methodology in Higher Education
1-11Views:212Higher education institutions have to follow the changes of current higher education and market oriented atmosphere. All these changes have to be measured and probably reacted to. Leaders of higher education instutions should have personal skills, which can contribute to the efficiency therefore they can motivate their colleagues. The aim of this study is to unfold the most effective measuring model to determine the leadership competencies, behaviours, properties, which can contribute to the successful operation and to the subsistence of experienced competition in higher education.
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Numerical analysis of effects of an open-pit coal mine to groundwater
70-74Views:240In this study we investigated the hydrogeological problems of an open-pit brown coal mine in the Borsod coal basin with Processing Modflow software. The coal mine is located in the valley of the Sajó-river with high transmissivity overburden layer where the traditional dewatering solutions were not encouraging due to inrush risks and low cost-efficiency. A new way of barrier forming was found out and numerically simulated to prove the efficiency of the solution. Since there are several contaminated sites in the surroundings it was a key factor to assure that the new mine dewatering technique has only a negligible effect on the groundwater regime that undisturbs the known contaminant plumes nearby.
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Examination of Innovative Wastewater Treatment Method for Chemical Treatment of Municipal Wastewater
136-144Views:433The VízTEC Ltd. and Debrecen Waterworks Co.’s management mutually expressed their intention, that to designate a period of research examining the Debrecen Waste Water Treatment Plant’s (WWTP) intensification. During this period, the newly developed product, VIRON Plus 40 coagulating agent will be tested provided by the VízTEC Ltd. The aim of using the VIRON Plus 40 coagulating agent is the examination of intensification opportunities of Debrecen WWTP. The functions of the new generation of coagulants go beyond inorganic phosphorus precipitation and are growing. A modern WWTP is not only clean the water but also produces energy and usable sludge product. The appropriate energy balance, cost efficiency and carbon dioxide emissions reduction get increasing emphasis in WWTP’ operations.
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Investigation of SCOR Model in Connection with Performance and Warehouses
227-239Views:252Business leaders can use several strategic tools to improve the organization, depending on what they consider to be important. The Supply Chain Operational Reference Model (SCOR) is one of these. Its importance is to link business processes, performance metrics, best practices, and technology together and to create a unified structure. It promotes communication between the stakeholders of the supply chain and improves supply chain management and the efficiency of the related supply chain improvement activities. The aim of this study is to find out how the SCOR model appears in the international literature related to warehousing and performance. What methods and tools do authors use to investigate their research questions and hypotheses? Description statistics and category selection were used to present the results of the study. The number of SCOR model researches related to warehouse performance measurments are very rare, it is rather used to describe different processes. In the future, it would be worthwhile to extend the SCOR model analyzes to further fields, especially to warehouse performance measurements.
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The Challenges of the Labour Law and Economic in the Future Labour Market
116-130Views:933The aim of the study is to examine how the effects of globalization affect the global labor market, and how high-level automation and digitalization affect the expectations of labor market actors and the world of labor law. We analyze the legal framework and the economic and social utility of acquiring competences for new challenges in the industry. We will look in more detail at the future of the low-skilled labor force in a changing labor market as a function of acquiring new competencies. We believe that changes in the labor market and novel processes will also pose new challenges for employers and employees. Changes in the labor market raise the question of what kind of benefits an outgoing worker will receive until he or she acquires new competencies. Is the social welfare system in the current sense capable of supporting lifelong learning, or is it necessary to explore alternatives such as basic income? All this needs to be done in the light of the legal and economic scrutiny of the concepts of efficiency and economy. This is because acquiring competences for the new employee also brings new added value.
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The green methanol - playing a role in sustainable energy management
249-258Views:243Global energy demand is constantly increasing, so the energy sources we use, and the efficiency of energy use are of paramount importance for the future of humanity. Methanol can play a key role in the sustainable use of natural resources, in the efficient and smooth transition from a fossil oil-based energy system as well as in reducing greenhouse gas emissions. Long-term thinking will result in an increase in the use of renewable energy sources, which will favour the spread of green methanol technology and thus the use of a carbon-neutral fuel. The raw materials for the production of green methanol may include municipal solid waste, agricultural waste, renewable hydrogen and carbon dioxide and the methanol has many uses, both as fuel and chemical feedstock. It also provides an opportunity to chemically store excess renewable energy from intermittent sources, thereby reducing dependence on fossil fuels. The price of electricity used for electrolysis is the main determinant of the economical production of green methanol, so the reduction of the cost of solar and wind energy greatly contributes to the competitiveness of carbon-based production.
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Business Process Development with the Application of Simulation Technique
109-118Views:279The object of our work to increase production efficiency with the use of cost-efficient development tools at a Hungarian small enterprise. We apply data gathering techniques besides process modelling and diagnostic methods to reduce the total process time of the assembly process so as to induce cost reduction in the production. In this respect we investigate and rank root causes of wastes by cost-effective process development tools, like timebased FMEA (failure mode and effects analysis) as well as the 5 whys method. With the use of Monte-Carlo simulation companies can evaluate the change in the process, therefore, they can decide whether they want to carry out corrective measures or not. The accomplished changes can generate increasing competitive edge in the long run.
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Case Study of Unilever's Zero-Emission Target Realization
16-36Views:603This paper presents a detailed case study of Unilever’s strategy and progress toward achieving zero carbon emissions, focusing on Scope 1, 2, and 3 emissions. The study analyzes a 10-year time series of both financial and non-financial data to assess the relationship between sustainability indicators, such as greenhouse gas (GHG) emissions, total and renewable energy use, and the company’s operating profit. Forecasting techniques were applied to project future emission levels based on historical data, while correlation analysis was used to evaluate the relationships between key variables. The results show a strong positive correlation between total energy use and CO₂ emissions, highlighting the importance of energy efficiency in emission reduction efforts. However, no significant correlation was found between operating profit and CO₂ emissions or energy use, suggesting that sustainability initiatives have not yet had a measurable direct impact on profitability. Despite this, Unilever has demonstrated substantial progress toward its climate targets, including a 91% reduction in CO₂ emissions per ton of production (compared to a 2008 baseline) and the transition to 100% renewable electricity in many of its facilities. The study concludes that while sustainability measures may not immediately influence profit margins, they are essential for long-term competitiveness and corporate responsibility. This case provides valuable insights for firms aiming to integrate environmental performance into strategic decision-making.
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Opportunities to the urban air quality of characterization by the cost-effective electrochemical sensors
1-16Views:189The quality of urban is more and more affected by the accelerating urbanization. The efficiency of improving air quality can be increased by providing local information on each pollutant source. The aim of our activity is providing real-time high-spatial reasultion data about air quality of the Hungarian capital city, Budapest. In this paper, results of testing and calibration of different low-cost electrochemical sensors and localization of them are represented. The first selected sensor is suitable for detecting carbon dioxide (CO2), alcohols, benzene (C6H6), nitrogen oxides (NOx) and ammonia (NH3). The RingAir initiative also aims to involve the urban population in active environmental monitoring activities, therefore in the future we are planning to implement a more detailed and continuously updated monitoring system with the participation of a Budapest bicycle courier service and some of the city's population.
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Self-developed Controller System –based on Open-Source Applications
97-105Views:159In the University of Debrecen Building Mechatronics Research Centre faced by the application of building automation technology, are tackled by cutting edge research performed at the Research Centre. The embedded device system, the focus of the ongoing project at the Research Centre, is programmable, reconfigurable, and adjustable. The design of an efficient embedded system must meet regulatory requirements, for optimizing building energy efficiency. The system provides solutions for a range of industrial applications, and peaks the interest of building services providers (e.g. SMEs).
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The Use of Additive Manufacturing for Wind Tunnel Simulations
62-71Views:242The current economical situation requires aircraft operators to start organizing their activity in the direction of carbon neutrality using innovative solutions.
The goal of present study is to desing a brand new wingtip device using 3D printing which helps reducing aerodynamical drag, leading to fuel efficiency and less carbon emission with its innovative shape.
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Management Practices from Christian Point of View
14-30Views:289Globalisation is a complex and worldwide process overarching historical times and continents. However the phenomenon brought efficiency and new opportunities to companies, providing practically free access to raw materials, labour and knowledge, it also caused negative effects like the degradation of the biosphere, greater social and economic inequality especially in the developing countries. There are some companies operating worldwide which have acquired great economic power and influence. and governments have only limited possibilities (if any) to regulate their operation. The expenses of profit maximisation are high, which are often ‘paid’ by the socialnatural environment (as externalities) and/or by humans. The aim of our study is to overview how current business relations could be formed to be more „human friendly”. The research is done from a Christian philosophy point of view, focusing on the employees as the major stakeholder group of the comanies. As part of the study some practical examples and Hungarian organisations related to this topic are introduced in order to highlight the relevance of the topic.
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Laboratory-scale gasification of brown coal and char from RDF pyrolysis
188-193Views:208The pyrolysis is a promising process for producing syngas from wastes. However, the by-product of the technology may contain large quantities of carbon, therefore it is suitable for further syngas production. In this paper we examined the steam gasification of brown coal from Felsőnyárád and char from RDF pyrolysis derived from an experimental pilot plant operating in Zalaegerszeg. We performed our experiments in a laboratory-scale fix-bed reactor at 900 °C. The aim of this work to examine the efficiency of syngas production from pyrolysis char, as well as to explore the similarities and differences of the thermal decomposition of the feedstock materials.
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Menedzsment módszerek az Ipar 4.0 tükrében
507-514Views:794The fourth industrial revolution poses major challenges for organisations in terms of technological aspects and from a management point of view, too. Good (effective) management is vital as it can help overcome the difficulties arising from shortages of skilled labour and from cost-cutting pressures, and it can help improve efficiency of resources. Innovations require management methods that support the introduction of industry 4.0. In my review of the literature, I aim to find out how the current level of sophistication in this new field can help managers of SME to better embrace change. Based on the reviewed literature, from management point of view, organisational structure, leadership style and HR practices are key to creating an atmosphere conducive to learning and innovation. In terms of structure, researchers do not suggest one thing to apply, but emphasise that industry 4.0 is characterised by an unstable, changing environment, so it is worth developing a structure that is characterised by decentralisation, few rules, horizontal communication and collaborative teamwork, i.e. much more organic than mechanical. In terms of different leadership styles, it is the transformational leadership that is the most often mentioned, however, in case of industry 4.0, we need even more because it can have various limitations. Even before industry 4.0, literature has highlighted that the recommended leadership style can be defined as the combination of transformational and transactional leadership; research in industry 4.0 in recent years also emphasises that it is the expanded construction of a knowledge-driven leadership style that blends the two, which can best facilitate innovation and learning. Managers can develop employee skills and improve their learning abilities through a variety of HR practices. So the right structure, leadership style and HR prepare the organisation for industry 4.0 by facilitating learning, improving skills and innovation.
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Applicability of Optimization Methods in the Design of Automotive Rubber Products
358-363Views:227Size, shape or topology optimization are widely used to fulfil the requirements in the design process of rubber products. In many cases, the shape of the product is very complex and comes into contact with other components during operation. It is commonly subjected to large deformation for which the rubber shows strongly nonlinear behaviour. For this complex problem analytical solution is not available, thus finite element method could be used in which the analysis running is a time consuming process. The object of my research is to compare the efficiency and computational cost of different optimization algorithms. This article focuses on the applicability of various optimization methods in the field of automotive rubber goods. Direct search optimization and surrogate model optimization methods will be introduced.
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The Relationship Between Leadership and Management and Quality Management: Systematic Literature Review
48-62Views:389This publication is intended to examine the close relationship between quality management and leadership and organization, highlighting the possibilities of increasing organizational efficiency in both industrial and non-industrial environments. During the systematic literature review, we examined the role of leadership, the closely related organizational culture, and quality management. The publication aims to explain how quality systems and frameworks, such as ISO and the EFQM model, support strategic planning and sustainability, thus providing direction for modern organizations. The research emphasizes the importance of digital transformation and knowledge management, and we have formulated the future research goals that can advance the productivity of organizations.
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Designing of Lab-scale Anaerobic Digester Equipped with Maxblend Impeller to Evaluate Effect of Mixing on Anaerobic Digestion
404-413Views:257Operational parameters can be easily controlled at lab scale experiments for an anaerobic digestion process. Our aim is to design a lab-scale digester equipped with an impeller to investigate how the geometry of impeller and different mixing modes effect the biogas yield of digester. Further, the methods of measuring the gas volume, gas composition, mixing intensity, torque, temperature are discussed in this article. The assembling of 4 liters digester is described which can be operated at various operating parameters which control the anaerobic digestion process. Mixing is very important to enhance efficiency of an anaerobic digester. To attain mixing Maxblend impeller is used in this lab-scale digester due to its better performance for mixing and power consumption. Various design consideration has been described.
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Optimization of Automotive Industry’s Manufacturing Process with Lean Tools
81-89Views:479Lean plays i mportant role in industrial environment. Automotive industries use lean tools in order to reduce cost and i mprove productivity. To achieve the company's objectives and so lve the detected problems I also used lean tools. By using lean tools we want to decrease total process cost (TPC). In order to achieve this target, the three-shift production has to reduce in two-shift production, which result decrease in the human resource costs and production costs. In order to reduce shifts we have to increase overall equipment efficiency (OEE) and eliminate minimum 50% of wastes by implementing 5s methodology, using Poka-yoke and scheduled maintenance.
