bluuebunny/crossref_metadata_2025_split huggingface dataset:
Experimental Evaluation of the Effect of Silica Fume on Compressive, Tensile Strength, Abrasion Resistance, Slump and Impact Test and Water Permability Coefficient of Concrete
Authors: Esmailpour M. , Rahmani K. , Piroti S. 
Published: August 2018

Abstract
The use of various additives (admixtures) in concrete and cement products has been considered by various researchers in recent years. Microsilica (Silica fume) can also be considered as one of the most widely used additives (admixtures) in this section. In this study, 120 concrete specimens were constructed using a mix design based on ACI in the laboratory with an overview of records and advantages of using microsilica in concrete. The microsilica used in concrete specimens has been considered 2%, 5.5% and 7.5% by weight of cement. Finally impact permeability, tension and uniaxial compressive strength tests were done on concrete specimens and their mechanical properties were evaluated. The results show that microsilica improves the mechanical properties of concrete. The results also show that the use of microsilica in ordinary concrete has a very positive effect in controlling the surface cracks and increasing some strength parameters such as tensile and compressive strength of concrete.
Investigating the Effect of Distance and Diameter Ratio of Elliptical Piles on the Amount of Force Exerted by Waves in the Pile Groups with Regular Layout
Authors: Ghatarband M. , Askar M. Behdarvandi 
Published: August 2018

Abstract
Today, advanced countries compete enormously for further exploitation in the offshore area, for its enormous fresh resources and space. Therefore, these competitions will double the importance of these types of structures. As it is known, the most important part in the design of the offshore structures is the design of the piles on which the structure will be placed. Engineers have always been trying to build these types of structures with the least cost and the highest safety factor. In this research, the effect of distance and the ratio of the elliptical pile diameters on the strength of the pile group was evaluated using numerical modeling. Five different states of diameter ratios including: 1.2, 1.4, 2, 2.5, 3 and five different distance ratios were investigated. The results demonstrate that with the increase in the diameter ratio, the amount of force decreases while it increases as the distance ratio rises.
Using the Earth’s Natural Potential for Heating a Building
Authors: Horneț M. , Cîrstolovean I.L. , Năstac D.C. , Ancaș Ana Diana , Profire M. 
Published: August 2018

Abstract
It is known the fact that buildings become one of the major energy consumers. In order to ensure thermal comfort in buildings, more and more complex heating, ventilation and air conditioning systems have been used over time, which are currently large primary energy consumers. At the same time, today, the main source of energy production is still the burning of fossil fuels, which is the process leading to significant emissions of greenhouse gases. That is why the current European Union directives enforce both reducing buildings energy consumption with 20% before 2020 and using an amount of 20% of renewable energy. One of the heating systems that best respond to the need to reduce the energy consumption of buildings is the low-temperature radiant heating system., This is the reason why the present paper presents a research project that concerns the use of TABS heating/cooling systems that harness the renewable geothermal energy of the ground provided by a ground-air heat pump in Romania. The experimental research building is one of the research laboratories of the Research, Development, Innovation Institut of Transilvania University of Brasov-Romania In the first cold season of activity for heating the experimental building (2017-2018), the system provided a thermal enegy of 48 MWh, covering 48 % from the amount of the heating load. During the monitored period, the average COP for heating of the heat pump was 4,6. The research will continue to take place, results regarding the economy for cooling the building in the warm season and for the year’s transition periods being expected to follow.
Ranking of Effects of Construction Delay: Evidence from Malaysian Building Projects
Authors: Ullah K. , Khan M. S. , Lakhiar M. T. , Vighio A. A. , Sohu S. 
Published: August 2018

Abstract
The problem of delay is a regular phenomenon in construction projects all around the world and the Malaysian building projects has no exclusion. The aim of this paper is to determine and rank the effects of delay in Malaysian building projects with respect to their Relative Importance Index. Literature review and questionnaire survey were used to gather data for this study. A thorough literature review was performed to identify the common effects of delays in building construction projects. A questionnaire was distributed among key project participants; contractors, clients and consultants, to rank the effects of delay in Malaysian building projects based on the perception of survey respondents. In total 300 questionnaires were distributed, as a result of 240 questionnaires were received. The collected data of questionnaire survey was analysed using statistical software SPSS. In total, 17 effects of the delays have been determined and findings from the survey revealed that time overrun, cost overrun, dispute, loss of profit, arbitration, claims, contract termination, litigation, poor quality of work, and total project abandonment were the main effects of delay in Malaysian building projects. The findings of this study might encourage construction stakeholders to focus on the issue of delays in building projects.
Deep Features Extraction for Robust Fingerprint Spoofing Attack Detection
Authors: de Souza Gustavo Botelho , Santos Daniel Felipe da Silva , Pires Rafael Gonçalves , Marana Aparecido Nilceu , Papa João Paulo 
Published: August 2018

Abstract
Biometric systems have been widely considered as a synonym of security. However, in recent years, malicious people are violating them by presenting forged traits, such as gelatin fingers, to fool their capture sensors (spoofing attacks). To detect such frauds, methods based on traditional image descriptors have been developed, aiming liveness detection from the input data. However, due to their handcrafted approaches, most of them present low accuracy rates in challenging scenarios. In this work, we propose a novel method for fingerprint spoofing detection using the Deep Boltzmann Machines (DBM) for extraction of high-level features from the images. Such deep features are very discriminative, thus making complicated the task of forgery by attackers. Experiments show that the proposed method outperforms other state-of-the-art techniques, presenting high accuracy regarding attack detection.
More than Fitness. A Robustness-based Proposal of a Logical Space to Classify Processes Behind Evolutionary Phenomena
Authors: Airoldi Giorgio 
Published: August 2018

AbstractThe assumption that natural selection alone is sufficient to explain not only which traits get fixed in a population/species, but also how they develop, has been questioned since Darwin’s times, and increasingly in the last decades. Alternative theories, linked to genetic and phenotypic processes, or to the theory of complex systems, have been proposed to explain the rise of the phenotypic variety upon which natural selection acts. In this article, we illustrate the current state of the issue and we propose a logical space based on phenotypic robustness that allows a classification of evolutionary phenomena and can provide a framework for unifying all these accounts.
Keeping Technical Education Aligned to the Needs and Expectations of Industry
Authors: Grebski Wieslaw , Grebski Michalene 
Published: August 2018

Abstract
Paper describes the continuous quality improvement procedures used by the author to keep the General Engineering program at Penn State Hazleton aligned to the needs and expectations of industry. The paper addresses the procedure for the development of program educational objectives which are the goals of the program. The goals of the program are defined jointly by industry leaders and former Engineering graduates as well as the Engineering faculty. The paper also focuses on the development of the student outcomes which is the body of knowledge that every graduate should have at the day of graduation. The paper also explains the process for collecting data for the purpose of assessing the level of attainment of program objectives and student outcomes. Based on the data which is being collected on an ongoing basis, the necessary corrective actions are implemented. This is happening on the program level as well as the course level. The necessary changes on the course level are happening every semester. The adjustments to the Engineering curriculum are being made yearly usually during the summer months. The paper focuses on the constant need for revising the curriculum in order to stay current with technology.
The Structure Analytical Research of Porous Permeable Wire Material
Authors: Jakubowski Andrzej , Crasto Renata 
Published: August 2018

Abstract
The details of making technology of porous permeable material with use of wire are allowed to carry out the analytical research of structure and structural characteristics of wire winding body. Its permit for prognostication the final properties of material, that is produced by the following deformation treatment (diameter reduction). Due to the regular organized arrangement of wire, the coil of winding body is considered as a multispan continuous beam, but a contact of coils - as interaction of two cylinders. Possibility of exactly calculation of the contacts between coils is allowed to go over the single fragment displacements into deformation of whole winding body. During research of deformation processes in regards of winding body geometry and used wire mechanical properties, the structural characteristics of porous permeable wire material are expected. The optimal number of winding layers, eliminating the distortion of organized final structure, is established. The material pressure-compactness relation is obtained in order to control the technological conditions of winding and drafting for guarantee the product required properties.
Strategies of Production Control as Tools of Efficient Management of Production Enterprises
Authors: Budynek Mateusz , Celińska Elżbieta , Dybikowska Adrianna , Kozak Monika , Ratajczak Joanna , Urban Jagoda , Materne Karolina 
Published: August 2018

Abstract
The paper discusses the problem of principle methods of production control as a strategy supporting the production system and stimulating efficient solutions in respect management in production enterprises. The article describes MRP, ERP, JIT, KANBAN and TOC methods and focuses on their main goals, principles of functioning as well as benefits resulting from their application. The methods represent two diverse strategies of production control, i.e. pull and push strategies. Push strategies are used when the plans apply to the first and principle part of production and are based on the demand forecasts. Pull strategies are used when all planning decisions apply to the final stage and depend on the actual demand or orders from customers.
The Application of a Jet Fan for the Control of Air and Methane Streams Mixing at the Excavations Cross – The Results of Numerical Simulation
Authors: Wrona Paweł , Różański Zenon , Pach Grzegorz , Domagała Lech 
Published: August 2018

Abstract
The paper presents the results of numerical simulations into the distribution of methane concentration at the intersection of two excavations with a fan (turned on) giving the air stream to the area of the crossing. Assumed case represents emergency situation related to the unexpected flow of methane from an excavation and its mixing with fresh air. It is possible when sudden gas outburst takes place, methane leaks from methane drainage system or gas leaks out the pipelines of underground coal gasification devices. Three options were considered - corresponding to three different speeds of the jet fan. They represent three stages of fan work. First - low air speed is forced by a pneumatic fan, when electricity is cut off after high methane concentration detection. Medium speed can be forced by pneumatic-electric device when methane concentration allows to turn on the electricity. Third, the highest speed is for electric fans. Simulations were carried out in the Fire Dynamics Simulator (FDS) belongs to the group of programs Computational Fluid Dynamics (CFD). The governing equations are being solved in a numerical way. It was shown that proposed solution allows partial dilution of methane in every variant of speed what should allow escape of the miners from hazardous area.
Qualitative Importance Measures of Systems Components – A New Approach and Its Applications
Authors: Chybowski Leszek , Gawdzińska Katarzyna , Wiśnicki Bogusz 
Published: August 2018

Abstract
The paper presents an improved methodology of analysing the qualitative importance of components in the functional and reliability structures of the system. We present basic importance measures, i.e. the Birnbaum’s structural measure, the order of the smallest minimal cut-set, the repetition count of an i-th event in the Fault Tree and the streams measure. A subsystem of circulation pumps and fuel heaters in the main engine fuel supply system of a container vessel illustrates the qualitative importance analysis. We constructed a functional model and a Fault Tree which we analysed using qualitative measures. Additionally, we compared the calculated measures and introduced corrected measures as a tool for improving the analysis. We proposed scaled measures and a common measure taking into account the location of the component in the reliability and functional structures. Finally, we proposed an area where the measures could be applied.
The Use of Generating Sets with ING Gas Engines in “Shore to Ship” Systems
Authors: Tarnapowicz Dariusz , German-Galkin Sergiej 
Published: August 2018

Abstract
The main sources of air pollution in ports are ships, on which electrical energy is produced in the autonomous generating sets Diesel-Generator. The most effective way to reduce harmful exhaust emissions from ships is to exclude marine generating sets and provide the shore-side electricity in “Shore to Ship” system. The main problem in the implementation of power supply for ships from land is connected with matching parameters of voltage in onshore network with marine network. Currently, the recommended solution is to supply ships from the onshore electricity network with the use of power electronic converters. This article presents an analysis of the „Shore to Ship” system with the use of generating sets with LNG gas engines. It shows topologies with LNG - Generator sets, environmental benefits of such a solution, advantages and disadvantages.
Benefits of an Application of Evolutionary Strategy in the Process of Test Data Generation
Authors: Żukowicz Marek 
Published: August 2018

Abstract
The aim of the article is to highlight the advantages that can be obtained through the use of evolutionary strategy in software testing, specifically in the process of test data generation. The first chapter introduces the reader to the topic of the article. Presents information of the problem of software quality, test data fitness and quality criteria. The second chapter provides an overview of the publication in which is described the test data generation problem by using evolutionary strategies. In this chapter there are presented, different approaches to address the optimization problem of test data selection. The third chapter sets out the advantages which in the opinion of the author result from the application of evolutionary strategy in the process of test data generation. In this section have been drawn conclusions from the article, from books listed in the bibliography. The author of the article presents advantages of evolutionary strategy too as a person, which tests a software in practise. The last chapter in addition to summaries and conclusions, proposes the author to suggest in which issues related to testing could be used evolutionary strategies.
Improvement of the Process of Implementation of New Product for European Market - Case Study
Authors: Zasadzień Michał , Nowrot Zofia 
Published: August 2018

Abstract
An inseparable element of intelligent processes is the effective use of knowledge gained from external sources and the ability to change under the influence of external factors. An example of this can be found in the process of introducing a new construction product to the EU market. It has to react to the ever-changing EU legislature and the national regulations that adapt to it. The frequently asked questions from manufacturers and importers indicate the necessity of creating a procedure that would allow for precisely explaining what the algorithm of the process looks like and what criteria must be met to introduce the new product into the construction product market. The complexity and multitude of regulations as well as the language barrier also cause other complications with the understanding of the process procedure of conduct. The graphical presentation of the algorithm should facilitate following the path of conduct in the case of introducing a new construction product into the EU market. The graphical form should allow for intuitive movement in the process and can constitute a basis for creating an interactive form.
Vibrations Detection in Industrial Pumps Based on Spectral Analysis to Increase Their Efficiency
Authors: Rachid Belhadef , Hafaifa Ahmed , Boumehraz Mohamed 
Published: August 2018

Abstract
Spectral analysis is the key tool for the study of vibration signals in rotating machinery. In this work, the vibration analysis applied for conditional preventive maintenance of such machines is proposed, as part of resolved problems related to vibration detection on the organs of these machines. The vibration signal of a centrifugal pump was treated to mount the benefits of the approach proposed. The obtained results present the signal estimation of a pump vibration using Fourier transform technique compared by the spectral analysis methods based on Prony approach.
Preparing the Production of a New Product in Small and Medium-Sized Enterprises by Using the Method of Projects Management
Authors: Bijańska Jolanta , Wodarski Krzysztof , Wójcik Janusz 
Published: August 2018

Abstract
Efficient and effective preparation the production of new products is important requirement for a functioning and development of small and medium-sized enterprises. One of the methods, which support the fulfilment of this condition is project management. This publication presents the results of considerations, which are aimed at developing a project management model of preparation the production of a new product, adopted to specificity of small and medium-sized enterprises.
The Application of Selected Network Methods for Reliable and Safe Transport by Small Commercial Vehicles
Authors: Matuszak Zbigniew , Bartosz Michał , Barta Dalibor 
Published: August 2018

Abstract
In the article are characterized two network methods (critical path method - CPM and program evaluation and review technique - PERT). On the example of an international furniture company’s product, it presented the exemplification of methods to transport cargos (furniture elements). Moreover, the study showed diagrams for transportation of cargos from individual components’ producers to the final destination - the showroom. Calculations were based on the transportation of furniture elements via small commercial vehicles.
Addressing Research Design Problem in Mixed Methods Research
Authors: Alavi Hamed , Hąbek Patrycja 
Published: August 2018

Abstract
Alongside other disciplines in social sciences, management researchers use mixed methods research more and more in conduct of their scientific investigations. Mixed methods approach can also be used in the field of production engineering. In comparison with traditional quantitative and qualitative research methods, reasons behind increasing popularity of mixed research method in management science can be traced in different factors. First of all, any particular discipline in management can be theoretically related to it. Second is that concurrent approach of mixed research method to inductive and deductive research logic provides researchers with opportunity to generate theory and test hypothesis in one study simultaneously. In addition, it provides a better justification for chosen method of investigation and higher validity for obtained answers to research questions. Despite increasing popularity of mixed research methods among management scholars, there is still need for a comprehensive approach to research design typology and process in mixed research method from the perspective of management science. The authors in this paper try to explain fundamental principles of mixed research method, its typology and different steps in its design process.
The Autonomous Maintenance Implementation Directory as a Step Toward the Intelligent Quality Management System
Authors: Molenda Michał 
Published: August 2018

Abstract
The article describes the effects of the improvement of the production process which one of the industrial enterprises obtained by implementing the method of Autonomous Maintenance (AM), which is one of the pillars of the concept of Total Productive Maintenance (TPM). AM method was presented as an aid to the formation of intelligent, self-improving procesess of the quality management system (QMS). The main part of this article is to present results of studies that have been conducted in one of the large industrial enterprises in Poland, manufacturing for the automotive industry. The aim of the study was to evaluate the effectiveness of the implementation of the AM method as a tool for selfimprovement of industrial processes in the following company. The study was conducted in 2015. The gathering and comparison of data from the period of two years, ie. the year before and the year after the implementation of AM, helped to determine the effectiveness of AM in building intelligent quality management system.
Analysis of Selected Recommendations of Parents for Improvement of Shared Care and Joint Custody After Parents/Partners´ Divorce/Separation
Authors: Kopčanová Dagmar , Filípková Bibiana 
Published: August 2018

Abstract
The content of this scientific study is based on the qualitative analysis of selected answers of parents, in the framework of semi-structured interview. The qualitative research is apart of bigger research work P-155/A, dealing with mental health of children in family and school settings. The main goal is to learn and analyse the empirical experience and views of participants, related to joint custody and shared care. The research sample consisted of randomly selected 9 participants who visited Výskumný ústav detskej psychológie apatopsychológie on behalf of some problems regarding custody after divorce/separation. In this contribution the parents´ attitudes towards mutual communication of former partners/parents, functioning of joint custody and shared care and some views related to some limits in this form of shared parenting have been analysed. Some valuable remarks with regard to the need of multi-professional team work, addressed to parents within the process of their divorce/separation proved to be very useful. Parents proposed they would extremely welcome some more help from mental health professionals and their crises intervention actions.
On behalf of discussion we notice that the juridical institute of joint custody and shared care is a very important tool, however, some legislative changes of this law should be still done. Concluding the study, we state that in spite of some methodological problems – like a limited number of research participants, we believe that the results can serve as a basis for the next deeper research, bringing more proposals for improvement in this field.