bluuebunny/crossref_metadata_2025_split huggingface dataset:
Object–Parameter Approaches to Predicting Unknown Data in an Incomplete Fuzzy Soft Set
Authors: Liu Yaya , Qin Keyun , Rao Chang , Alhaji Mahamadu Mahamuda 
Published: April 2017

AbstractThe research on incomplete fuzzy soft sets is an integral part of the research on fuzzy soft sets and has been initiated recently. In this work, we first point out that an existing approach to predicting unknown data in an incomplete fuzzy soft set suffers from some limitations and then we propose an improved method. The hidden information between both objects and parameters revealed in our approach is more comprehensive. Furthermore, based on the similarity measures of fuzzy sets, a new adjustable object-parameter approach is proposed to predict unknown data in incomplete fuzzy soft sets. Data predicting converts an incomplete fuzzy soft set into a complete one, which makes the fuzzy soft set applicable not only to decision making but also to other areas. The compared results elaborated through rate exchange data sets illustrate that both our improved approach and the new adjustable object-parameter one outperform the existing method with respect to forecasting accuracy.
Low Alloy Steel Structures After Welding with Micro-Jet Cooling
Authors: Węgrzyn T. , Piwnik J. , Hadryś D. , Wszołek Ł. 
Published: April 2017

Abstract
The paper focuses on low alloy steel after innovate welding method with micro-jet cooling. Weld metal deposit (WMD) was carried out for welding and for MIG and MAG welding with micro-jet cooling. This method is very promising mainly due to the high amount of AF (acicular ferrite) and low amount of MAC (self-tempered martensite, retained austenite, carbide) phases in WMD. That structure corresponds with very good mechanical properties, ie. high impact toughness of welds at low temperature. Micro-jet cooling after welding can find serious application in automotive industry very soon. Until that moment only argon, helium and nitrogen were tested as micro-jet gases. In that paper first time various gas mixtures (gas mixtures Ar-CO2) were tested for micro-jet cooling after welding.
Influence of heat treatment on the wear resistance of the ZnAl40Cu1.5Ti1.5 alloy
Authors: Michalik R. , Iwaniak A. , Wieczorek J. 
Published: April 2017

Abstract
Zn-Al-Cu alloys are predominantly used due to their tribological properties. One of the crucial issues related to the use of Zn-Al alloys is their dimensional instability. Partial replacement of copper with titanium greatly contributes to the reduction of the dimensional instability issue. The study involved the ZnAl40Cu1.5Ti1.5 alloy. In this work, microstructure and wear properties of ZnAl40Cu1.5Ti1.5 alloy were studied in both as-cast and heat treated conditions. The heat treatment was performed by solution treatment at a temperature of 385°C for 24 hours, quenching in cold water and artificial aging at 125°C for 3 hours. The hardness tests enabled to specify the optimum ageing time span, which amounts to 3 hours. Wear tests indicated that the ZnAl40Cu1.5Ti1.5 alloy is characterized with high wear resistance. It was also observed that the applied heat treatment increases the wear resistance of the experimental alloy.
Inverse Model for the Solute Micro-Field Formation during Self-Propagating High Temperature Reaction
Authors: Wołczyński W. 
Published: April 2017

AbstractA new thermodynamic description for the self-propagating high temperature synthesis (SHS - reaction) is presented in the “inverse” version. This description is worked out for the diffusion barrier, thickness of which is at the limit, i.e. its value is infinitesimally small. The solution to the diffusion equation delivered in the description can be easily extended for the diffusion barrier of a greater thickness. The Ni/Al multi-layers system is treated as a virtual eutectic alloy solidifying with the rate equal to that involved by the self-propagating reaction. It is suggested to inverse the curves obtained for solidification in order to characterize the melting completed by the formation of the AlNi - intermetallic phase required in the self-propagating synthesis.
Hot deformation behavior of Mg-Zn-Al alloy tube processed by severe plastic deformation
Authors: Fata A. , Faraji G. , Mashhadi M. M. , Tavakkoli V. 
Published: April 2017

Abstract
In the current study, severe plastic deformation (SPD) was applied on a commercial Mg-3Al-1Zn alloy tubes via parallel tubular channel angular pressing (PTCAP) route. Different passes of PTCAP process were applied, and microstructure, hardness and tensile properties at the room, and elevated temperatures were evaluated. The results showed that bimodal microstructure appeared and led to AZ31 alloy represented higher hardness, higher strength with a reasonable elongation at room temperature. Similarly, very high elongation to failure was achieved at a higher temperature. The increase in the number of SPD passes up to two, leads to increasing the ductility up to 263% at 400°C. Then, an increase in the number of PTCAP passes to three, leads to decrease in the ductility as the results of formation of microvoids when SPD processing at higher equivalent strains without a sufficient hydrostatic compressive stress. Relatively ductile fracture mode was also occurred in all samples.
Structural Transition in SrZnO Laser Pulse Deposited Alloy
Authors: Albrithen H. A. , Elnaggar M. , Ozga K. , Szota M. , Alahmed Z. A. , Alanazi A. Q. , Alshahrani H. , Alfaifi E. , Djouadi M. A. , Labis J. P. 
Published: April 2017

Abstract
We have discovered a structural transition for the SrZnO alloy films from a wurtzite to a rock-salt structure, leading to a reduction in the (112̲0)/(0001) surface energy ratio. The films were grown by pulsed laser deposition using different SrO ratios, x. We have revealed that growth at a higher temperature, 750°C, resulted in a sharp 0002 peak at a low SrO content (5%), whereas growth at a higher SrO content (10%) resulted in a non-crystalline film with minute crystallites with a (112̲0) orientation. Generally the crystallinity decreased as the SrO content increased. No results obtained for the crystalline films showed any orientation of significant peaks besides the peak attributed to the (0001) plane, suggesting epitaxial growth. Optical measurements showed difference in transmission widows of alloys with different SrO percentage, and this was correlated to SrO influence on growth mode as indicated by scanning electron imaging. The studied SrZnO films, with SrO/(SrO + ZnO) ≤ 0.25, were grown by pulsed laser deposition using different SrO ratios, x. The effects of temperature and oxygen pressure during growth on the films’ structural properties were investigated. XRD results indicate that the film crystallinity was improved as the temperature and O2 pressure increased up to 650°C and 0.5 Torr, respectively.
Incorporation of the Pore Size Variation to Modeling of the Elastic Behavior of Metallic Open-Cell Foams
Authors: Ćwieka K. , Wejrzanowski T. , Kurzydłowski K. J. 
Published: April 2017

Abstract
In the present paper we present the approach for modeling of the elastic behavior of open-cell metallic foams concerning non-uniform pore size distribution. This approach combines design of foam structures and numerical simulations of compression tests using finite element method (FEM). In the design stage, Laguerre-Voronoi tessellations (LVT) were performed on several sets of packed spheres with defined variation of radii, bringing about a set of foam structures with porosity ranging from 74 to 98% and different pore size variation quantified by the coefficient of pore volume variation, CV(V), from 0.5 to 2.1. Each structure was numerically subjected to uni-axial compression test along three directions within the elastic region. Basing on the numerical response, the effective Young’s modulus, Eeff, was calculated for each structure. It is shown that the Eeff is not only dependent on the porosity but also on the pore size variation.
Effect of intensive cooling of alloy AM60 with chromium and vanadium additions on cast microstructure and mechanical properties
Authors: Rapiejko C. , Pisarek B. , Pacyniak T. 
Published: April 2017

AbstractThe work presents the results of the investigations of the effect of intensive cooling of alloy AM60 with additions of chromium and vanadium on the microstructure and mechanical properties of the obtained casts. The experimental casts were made in ceramic moulds preliminarily heated to 180°C, into which alloy AM60 with the additions was poured. Within the implementation of the research, a comparison was made of the microstructure and mechanical properties of the casts obtained in ceramic moulds cooled at ambient temperature and the ones intensively cooled in a cooling liquid. The kinetics and dynamics the thermal effects recorded by the TDA method were compared. Metallographic tests were performed with the use of an optical microscope and the strength properties of the obtained casts were examined: UTS(Rm), elongation (A%), and HB hardness.
Influence of additives in core-forming mixture
Authors: Vasková I. , Hrubovčáková M. , Conev M. 
Published: April 2017

Abstract
In recent years, ingredients, also known as additives, which appreciably affect the quality of the casting surface, come to the fore. Additives - lower the temperature at which SiO2 (major component of silica sand) begins to soften and create a melt on the surface of the grains, increase the reactivity and decrease the temperature of a transition to tridimite and cristobalit. These passages support the increase of volume of subsurface sand stress and the tension for the formation of burrs and other casting defects on the surface of the core or the mold.
Nowadays, as a great emphasis is put on the quality of the casts, it is therefore necessary to pay attention to these additives, which can effectively reduce the labor intensity in the production of castings and ensure a quality surface of castings.
An analysis of the joints’ properties of thick-grained steel welded by the SAW and ESW methods
Authors: Krawczyk R. 
Published: April 2017

Abstract
The article presents an analysis of properties of welded joints of thick-grained steel of P460NH type used more and more often in the modern constructions. A process of examining a technology of welding has been carried out on the thick-walled butt joints of sheet metal by two methods of welding namely submerged arc welding (SAW - 121) and electroslag (ESW - 722). The article deals with a topic of optimizing a process of welding thick-walled welded joints of fine-grained steel due to their mechanical properties and efficiency.
Reproducibility of machine tools’ circularity test according to ISO 230-4 with respect to testing position
Authors: Woźniak Monika , Majda Paweł 
Published: April 2017

Abstract
In this paper circularity of three different machine tools by Virtual Machine was analyzed. To get circularity we make a ball bar test according to ISO 230-4. The test is very common in engineering for a quick diagnostic Computerized Numerical Control (CNC) technical conditions. We implemented earlier calculations of Volumetric Error in our Virtual Machine. Then we simulated testing of circularity of CNC machine tools. The place to take the test was chosen randomly from Uniform Distribution in three different kinds of machine tools. Those machines had different characteristics of kinematic errors and squareness and also different sizes of working space. We observed significant differences in the indicator (circularity) depending on the place where the test was taken. Moreover we showed that there was no reason to take the test in the center of working table.
Investigation of Growth Hormone Releasing Hormone, Growth Hormone and Prolactin Hormone Gene Polymorphism in Anatolian Water Buffalo
Authors: Konca Mehmet Akif , Akyüz Bilal 
Published: April 2017

Abstract
The purpose of this work was to identify GHRH, GH and PRL gene polymorphisms in Anatolian water buffalo by means of the PCR-RFLP method. A total of 126 buffalo were included in this study. PCR amplification gave a 451 bp band for the GHRH gene, a 221 bp band for the GH gene and a 156 bp band for the PRL gene. The PCR products were digested by HaeIII for the GHRH gene, AluI for the GH gene and RsaI for the PRL gene. The GH/AluI and PRL/RsaI polymorphisms were found to be polymorphic, while the GHRH/HaeIII polymorphism was not found in Anatolian water buffalo. The frequencies of GH-L (0.87) and PRL-A (0.55) alleles were found to be high in the examined Anatolian water buffalo. The chi-square test showed that the Anatolian water buffalo were in Hardy-Weinberg (HW) equilibrium for the GH gene while significant deviation was observed from HW equilibrium for the PRL gene. The present study is the first to examine GHRH/HaeIII, GH/AluI and PRL/RsaI polymorphisms in Anatolian water buffalo.
Nonuniform exponential stability for evolution families on the real line
Authors: Morariu Claudia Isabela , Preda Petre 
Published: April 2017

Abstract
The purpose of the present paper is to investigate the problem of nonuniform exponential stability of evolution families on the real line using the input-output technique known in the literature as the Perron method for the study of exponential stability. In this manuscript we describe an evolution family on the real line and we present sufficient conditions for the nonuniform exponential stability of an evolution family on the real line that does not have exponential growth.
An extragradient iterative scheme for common fixed point problems and variational inequality problems with applications
Authors: Petruşel Adrian , Sahu D.R. , Sagar Vidya 
Published: April 2017

Abstract
In this paper, by combining a modified extragradient scheme with the viscosity approximation technique, an iterative scheme is developed for computing the common element of the set of fixed points of a sequence of asymptotically nonexpansive mappings and the set of solutions of the variational inequality problem for an α-inverse strongly monotone mapping. We prove a strong convergence theorem for the sequences generated by this scheme and give some applications of our convergence theorem.
Hungarian Minority Politics in Post-Socialist Romania: Interests, Strategies, and Discourses
Authors: Toró Tibor 
Published: April 2017

AbstractThis paper analyses the integration strategies formulated by the Democratic Alliance of Hungarians in Romania and the Hungarian political elite in the post-communist period. It argues that the internal debates of the political community are formulated in a field where other actors (the Hungarian and the Romanian state, political parties, European institutions, etc.) carry out their activities, which deeply influences both the chosen strategies and the needed resources for their implementation. Moreover, it questions the monolithic organization of the minority organization, showing that DAHR as the representative of the minority community was shaped by several internal debates and conflicts. Also from 2003 these conflicts have grown beyond the borders of the organization and since 2008 we can follow a whole new type of institutionalization. In achieving this, I introduce three strategies - individual integration, collective integration, and organizational integration - which are chosen by different fragments of the Hungarian minority elite both toward the Hungarian and the Romanian political sphere. Throughout the 1989-2012 period, the outcome of the conflict between the supporters of these strategies is deeply influenced by the policies of the two states.
Property Law in the New Romanian Civil Code
Authors: Sztranyiczki Szilárd 
Published: April 2017

Abstract
Taking into account the recent change in Romanian civil legislation, we consider the present scientific material very useful for an overview of this institution under the auspices of the New Civil Code. The national legal provisions set clear, therefore, that the property is divided into two institutions, the public property and the private property. Property classification is very important in this form for us to understand the legal nature and the applicable regime for each type of property. Moreover, the property right, either private or public, has an elite regulation in most European laws, but also in universal laws the respect for it and the guarantee of this right can be also found in the fundamental human rights, in the international treaties, and in the constitutions of different nations. We will try, therefore, to offer a brief overview of the new Romanian legislation in the mentioned field, which is already harmonized with European legislation, the result being the New Romanian Civil Code. We believe that the interpretation should be considerably more extensive, but - pragmatically - we will try to capture the main theoretical and practical features to denote the importance of this institution.
Efficiency of Electret Polycarbonate Nonwovens in Respiratory Protection Against Nanoparticles
Authors: Brochocka Agnieszka 
Published: April 2017

Abstract
Toxicological research on the influence of noxious nanoparticles on human health indicates the need to develop efficient protective devices. In particular, this concerns respiratory protective equipment employing filtration nonwovens. This paper presents a methodology for the improvement of the filtration efficiency of electret nonwovens against nanoparticles by enriching amorphous polycarbonate (PC) with additives of different electrostatic potentials. We introduced perlite granules (positive charge) and amber granules (negative charge) to the polymer stream in melt-blown technology. Filtration efficiency was assessed by a standard method using paraffin oil and sodium chloride aerosol, as well as by a non-standard method using NaCl nanoparticles. The experiments showed that strengthening the effects of electrostatic forces by the introduction of modifiers is a promising approach to improving the efficiency of electret nonwovens against nanoparticles.
The Middle-Dniester Cultural Contact Area of Early Metal Age Societies. The Frontier of Pontic and Baltic Drainage Basins in the 4Th/3Rd-2Nd Millennium Bc.
Authors: Ivanova Svetlana V. , Toschev Gennadiy N. 
Published: April 2017

AbstractThe paper discusses the taxonomy and autogenesis of the cycle of early ‘barrow cultures’ developed by the local communities of the Middle Dniester Area or, in a broader comparative context, the north-western Black Sea Coast, in the 4th/3rd-2nd millennium BC. The purpose of the study is to conduct an analytical and conceptual entry point to the research questions of the Dniester Contact Area, specifically the contacts between autochthonous ‘Late Eneolithic’ communities (Yamnaya, Catacomb and Babyno cultures) and incoming communities from the Baltic basin. The discussion of these cultures continues in other papers presented in this volume of Baltic-Pontic Studies.
‘Yampil Inspirations’: A Study of the Dniester Cultural Contact Area at the Frontier of Pontic and Baltic Drainage Basins
Authors: Ivanova Svetlana V. , Klochko Viktor I. , Kośko Aleksander , Szmyt Marzena , Toschev Gennadiy N. , Włodarczak Piotr 
Published: April 2017

Abstract
The article presents the present state of research on the general issue of the Dniester Region of cultural contacts between communities settling the Baltic and Pontic drainage basins. Some five domains of research shall be brought to discussion in which it is possible to see fresh opportunities for archaeological study, on the basis of ‘Yampil studies’ on Dniester-Podolia (forest-steppe) barrow-culture ceremonial centres from the latter half of the 4th millennium and first half of the 3rd millennium BC. This relates to the peoples of the Eneolithic and the Early Bronze Age. In terms of topogenesis, embracing the Pontic-Tripolye, Yamnaya and Catacomb cultures, as well as Globular Amphora and Corded Ware in central prehistoric Europe.
Integral equations for free-molecule ow in MEMS: recent advancements
Authors: Fedeli Patrick , Frangi Attilio 
Published: April 2017

AbstractWe address a Boundary Integral Equation (BIE) approach for the analysis of gas dissipation in near-vacuum for Micro Electro Mechanical Systems (MEMS). Inspired by an analogy with the radiosity equation in computer graphics, we discuss an efficient way to compute the visible domain of integration. Moreover, we tackle the issue of near singular integrals by developing a set of analytical formulas for planar polyhedral domains. Finally a validation with experimental results taken from the literature is presented.
Group Decision Analysis with Interval Type-2 Fuzzy Numbers
Authors: Ilieva Galina 
Published: April 2017

Abstract
This paper presentsagroup multi-criteria DEMATELand VIKORdecision analysis method with interval type-2 fuzzy sets. In order to compare normal fuzzy trapezoidal numbers, we convert them into crisp values using graded mean integration representation. Byacase study for selection of business intelligence platform, we prove that the proposed combination isafeasible solution that can work with benefits and costs criteria, while also reducing uncertainty in experts’assessments.
On Improving the Classification of Imbalanced Data
Authors: Mathews Lincy Meera , Seetha Hari 
Published: April 2017

Abstract
Mining of imbalanced data isachallenging task due to its complex inherent characteristics. The conventional classifiers such as the nearest neighbor severely bias towards the majority class, as minority class data are under-represented and outnumbered. This paper focuses on building an improved Nearest Neighbor Classifier foratwo class imbalanced data. Three oversampling techniques are presented, for generation of artificial instances for the minority class for balancing the distribution among the classes. Experimental results showed that the proposed methods outperformed the conventional classifier.
Multi-Band Spectrum Allocation Algorithm Based on First-Price Sealed Auction
Authors: Shi Zijuan , Luo Gaofeng 
Published: April 2017

AbstractAuction is often applied in cognitive wireless networks due to its fairness properties and efficiency. To solve the allocation issues of cognitive wireless network inamulti-band spectrum, multi-item auction mechanism and models were discussed in depth. Multi-item highest price sealed auction was designed for cognitive wireless networks’multi-band spectrum allocation algorithm. This algorithm divided the spectrum allocation process into several stages which was along with low complexity. Experiments show that the algorithm improves the utilization of spectrum frequency, because it takes into account the spectrum owner’s economic efficiency and the users’equity.
Data Receiving Method Based on Multimedia Timing in Real- Time System
Authors: Ma Zhigang , Liu Wenyi 
Published: April 2017

Abstract
Several methods, such as polling, multithread, timing, and so on, can be used in data receiving course. Low-efficiency and high level of system resource consumption may bring about data loss in polling and multithread methods when the data transmission rate is very high. Software timing methods are discussed and analyzed in Visual C++. Timing method would improve the system resource availability and decrease the risk of data loss. According to the demand ofatesting system,areal-time monitoring system based on memory sharing and multimedia timer is presented. After testing, the average timing error of the multimedia timer in the given instance is not bigger than 0.05%, so the continuity and integrity of data receiving can be assured under the conditions of high-speed data transmission.