bluuebunny/crossref_metadata_2025_split huggingface dataset:
Creative-Based Strategies in Small and Medium-Sized Cities: Key Dimensions of Analysis
Authors: Selada Catarina , Vilhena Da Cunha Inês , Tomaz Elisabete 
Published: May 2018

Abstract
The present article intends to contribute to the literature and research agenda regarding the importance of the creative economy as a driver for the revitalisation and development of small and medium-sized cities in Europe. Several studies argue that these territorial areas are necessarily doomed to failure and decline due to the lack of critical mass and density in terms of economic and institutional resources. However, some small towns are changing their development path towards a new ‘urban’ paradigm. The present research aims to identify and analyse a set of dimensions that have to be taken into consideration in the implementation of creative-based strategies in small and medium-sized cities, namely: governance factors, endogenous factors, and territorial embeddedness.
Isotopy of latin squares in cryptography
Authors: Grošek Otokar , Sýs Marek 
Published: May 2018

ABSTRACT
We present a new algorithm for a decision problem if two Latin squares are isotopic. Our modification has the same complexity as Miller’s algorithm, but in many practical situations is much faster. Based on our results we study also a zero-knowledge protocol suggested in [3]. From our results it follows that there are some problems in practical application of this protocol.
Dead-Beat and reaching law based sliding mode control laws for perishable inventories with transportation losses
Authors: Bartoszewicz Andrzej , Maciejewski Michał 
Published: May 2018

Abstract
This paper describes discrete sliding mode (SM) supply management strategies for inventory systems with perishable goods and transportation losses. In the considered systems, the stock used to satisfy the unknown, bounded and time-varying demand is replenished with some delay from a distant supply source. The on-hand stock deterioration during lead-time delay, as well as commodity losses in supply process are explicitly taken into account. Two supply management strategies are proposed. The first one ensures fast reaction to the imposed demand variations, but may result in excessive control signal magnitude at the beginning of the inventory management process. Therefore, in order to conform to supplier limitations we also develop an alternative control strategy based on the concept of the reaching law. That strategy helps reduce the initial supply rate and satisfy the supplier limitations. A number of desirable properties of both proposed strategies are formulated and formally proved. These properties include full customer demand satisfaction and elimination of the risk of exceeding the warehouse capacity.
Backstepping sliding mode controller improved with fuzzy logic: Application to the quadrotor helicopter
Authors: Zeghlache Samir , Saigaa Djamel , Kara Kamel , Harrag Abdelghani , Bouguerra Abderrahmen 
Published: May 2018

Abstract
In this paper we present a new design method for the fight control of an autonomous quadrotor helicopter based on fuzzy sliding mode control using backstepping approach. Due to the underactuated property of the quadrotor helicopter, the controller can move three positions (x;y; z) of the helicopter and the yaw angle to their desired values and stabilize the pitch and roll angles. A first-order nonlinear sliding surface is obtained using the backstepping technique, on which the developed sliding mode controller is based. Mathematical development for the stability and convergence of the system is presented. The main purpose is to eliminate the chattering phenomenon. Thus we have used a fuzzy logic control to generate the hitting control signal. The performances of the nonlinear control method are evaluated by simulation and the results demonstrate the effectiveness of the proposed control strategy for the quadrotor helicopter in vertical flights.
Topology optimization of trusses using bars exchange method
Authors: Bojczuk D. , Rębosz-Kurdek A. 
Published: May 2018

Abstract.
The algorithm of optimization of trusses is presented in the paper, where for topology optimization the bars exchange method is used. In the first case, the problem aimed at cost minimization with a constraint set on global stiffness is formulated. In the second case, the problem of minimizing the cost function subjected to stress and cross-sectional area constraints is discussed and here the multiple-load case is taken into consideration. The conditions for introduction of topology modification and its acceptance are specified. The paper is illustrated with three examples.
A stress-based formulation of the free material design problem with the trace constraint and single loading condition
Authors: Czarnecki S. , Lewiński T. 
Published: May 2018

Abstract.
The problem to find an optimal distribution of elastic moduli within a given plane domain to make the compliance minimal under the condition of a prescribed value of the integral of the trace of the elastic moduli tensor is called the free material design with the trace constraint. The present paper shows that this problem can be reduced to a new problem of minimization of the integral of the stress tensor norm over stresses being statically admissible. The eigenstates and Kelvin’s moduli of the optimal Hooke tensor are determined by the stress state being the minimizer of this problem. This new problem can be directly treated numerically by using the Singular Value Decomposition (SVD) method to represent the statically admissible stress fields, along with any unconstrained optimization tool, e.g.: Conjugate Gradient (CG) or Variable Metric (VM) method in multidimensions.
Stability analysis of continuous-time linear systems consisting of n subsystems with different fractional orders
Authors: Busłowicz M. 
Published: May 2018

Abstract.
The stability problem of continuous-time linear systems described by the state equation consisting of n subsystems with different fractional orders of derivatives of the state variables has been considered. The methods for asymptotic stability checking have been given. The method proposed in the general case is based on the Argument Principle and it is similar to the modified Mikhailov stability criterion known from the stability theory of natural order systems. The considerations are illustrated by numerical examples.
Numerical evaluation of fractional differ-integrals of some periodical functions via the IMT transformation
Authors: Brzeziński D. , Ostalczyk P. 
Published: May 2018

Abstract.
This paper presents accuracy evaluation of the numerical calculations of the fractional differ-integrals. We focus on applying the Riemann-Liouville formula, on singularity, which appears while using classical form of this formula. To calculate it we use the Newton-Cotes’ Quadrature and additionally two Gaussian rules. Using this different approach to the IMT Transformation, transforming the “core” integrand of Riemann-Liouville formula, we point the possible way of increasing the accuracy of the calculations. We use our own tools and compare obtained results with, where possible, exact values, where not - values obtained using an excellent method of integration incorporated in Mathematica.
On domain selection for additive, blind image watermarking
Authors: Lipiński P. 
Published: May 2018

Abstract.
Recently, a variety of digital watermarking schemes have been developed for copyright protection of digital images. In robust watermarking, which is used in copyright protection, transform-based algorithms are used to ensure resilience of the watermark to common signal processing attacks. The most frequently used watermarking algorithms for additive watermark embedding involve DCT, DFT, SVD and DWT domains. In this article we verify which domain is optimal for robust, the additive watermark embedding scheme. We demonstrate that in additive watermark embedding the embedding domain plays more important role than the embedding formula.
Godunov-type methods for two-component magnetohydrodynamic equations
Authors: Murawski K. , Tanaka T. 
Published: May 2018

Abstract.
This paper is concerned with a numerical solutions of two-component magnetohydrodynamic equations. While a hyperbolic system of wave equations admits a shock solution as a result of the selenoidality condition the MHD equations are not strictly hyperbolic. As a consequence of that these equations require special numerical treatment. An application of a resulting numerical code to a problem of solar wind interaction with the ionosphere of the planet Venus is presented.
Surface oxide layers with an increased carbon content for applications in oil-less tribological systems
Authors: Kmita Tomasz , Bara Marek 
Published: May 2018

Abstract
The paper presents the properties of surface oxide layers with an increased content of carbon for tribological applications. The composite surface oxide layers were produced using a two-step technology through hard anodising of the surface of an aluminium alloy, followed by thermochemical treatment of anodic oxide coatings. The surface oxide layers were subjected to tribological tests in an oil-less sliding couple with T5W plastic. The presented test results confirm the usefulness of the proposed modifications of surface oxide layers for the purpose of enhancing the operational durability of oil-less sliding couples in a reciprocating motion.
Algorithms and methods for analysis of the optical structure factor of fractal aggregates
Authors: Mroczka Janusz , Woźniak Mariusz , Onofri Fabrice R.A. 
Published: May 2018

Abstract
We introduce numerical methods and algorithms to estimate the main parameters of fractal-like particle aggregates from their optical structure factor (i.e. light scattering diagrams). The first algorithm is based on a direct and simple method, but its applicability is limited to aggregates with large size parameter and intermediate fractal dimension. The second algorithm requires to build calibration curves based on accurate particle agglomeration and particle light scattering models. It allows analyzing the optical structure factor of much smaller aggregates, regardless of their fractal dimension and the size of the single particles. Therefore, this algorithm as well as the introduction of a criterial curve to detect the different scattering regimes, are thought to be powerful tools to perform reliable and reproducible analysis.
Method of testing and correcting signal amplifiers’ transfer function using prony analysis
Authors: Zygarlicki Jarosław , Mroczka Janusz 
Published: May 2018

Abstract
This article presents a way of analyzing the transfer function of electronic signal amplifiers. It also describes the possibility of using signal precorrection which improves the parasitic harmonics in the THD (Total Harmonic Distortion) of the amplified signal by correcting linearity of the tested amplifier’s transfer function. The proposed method of analyzing and presenting the transfer function allows to diagnose the causes of generating parasitic harmonics, what makes it a useful tool when designing low distortion amplifier systems, such as e.g. amplifiers in measurement systems. The presented THD correction can be used in e.g. amplifier systems that cooperate with arbitrary generators.
Networked object monitor – a distributed system for monitoring, diagnostics and control of complex industrial facilities
Authors: Kowalczuk Zdzisław , Wszołek Jakub 
Published: May 2018

Abstract
The paper puts forward a method of designing and creating a complete computer system for monitoring and diagnosis of business and industrial facilities, as well as for control purposes. The proposed solution represents a computer-network system being a practical tool for communication, control and management of modern plants and enterprises. The applied concept of communication, based on the Service Oriented Architecture (SOA), makes a new attempt to solve certain performance problems met when using a (previously developed) Networked Object Monitor (NOM). The principal idea of increasing the performance of NOM lies in employing a common data bus, refereed to as a Diagnostic Service Bus (DSB), in the NOM monitor. The paper also describes a preliminary concept of a network description language (SMOL), which is designed to describe the functions, mechanisms, and network devices and to be a basis for simulation and verification of the NOMmonitor function.
The influence of method of point collection on results with the use of a measuring arm
Authors: Ratajczyk Eugeniusz , Rak Michał , Kowaluk Tomasz 
Published: May 2018

Abstract
Comparison studies of different measurement methods using a Coordinate Measuring Arm are presented. Studies were divided into two parts. The first was point measurements of contact and pseudo-scanning contact measurements. The second part consisted of point measurements of contact and non-contact scanning measurements. Contact research (point measurements and the pseudo-scanning) were accomplished with the use of PowerINSPECT software, whereas non-contact with use of Focus Handheld and Focus Inspection software. Handheld Focus was used to collect a point cloud and its processing, while the detection of set elements was made using the second software from the group of Focus. According to the developed procedure for both parts sample elements with known nominal values were measured (available CAD model of object of research). It became the basis for examining whether there are statistically significant differences between results of different methods in both parts. Statistical comparison of measurement methods was carried out using four tests: Comparison of Means, Comparison of Standard Deviations, Comparison of Medians and a Kolmogorov- Smirnov Test.
In-situ automatic observations of ice thickness of seas
Authors: Dou Yinke , Chang Xiaomin 
Published: May 2018

Abstract
Ice thickness is one of the most critical physical indicators in the ice science and engineering. It is therefore very necessary to develop in-situ automatic observation technologies of ice thickness. This paper proposes the principle of three new technologies of in-situ automatic observations of sea ice thickness and provides the findings of laboratory applications. The results show that the in-situ observation accuracy of the monitor apparatus based on the Magnetostrictive Delay Line (MDL) principle can reach ±2 mm, which has solved the “bottleneck” problem of restricting the fine development of a sea ice thermodynamic model, and the resistance accuracy of monitor apparatus with temperature gradient can reach the centimeter level and research the ice and snow substance balance by automatically measuring the glacier surface ice and snow change. The measurement accuracy of the capacitive sensor for ice thickness can also reach ±4 mm and the capacitive sensor is of the potential for automatic monitoring the water level under the ice and the ice formation and development process in water. Such three new technologies can meet different needs of fixed-point ice thickness observation and realize the simultaneous measurement in order to accurately judge the ice thickness.
Solution of Some Problems oOf Single-Scale Wavelet Transform Processor Using a Magnetostatic Surface Wave Device
Authors: Lu Wenke , Kuang Lun , Lü Xiaozhou , Zhu Changchun , Zhang Ting , Zhang Jingduan 
Published: May 2018

Abstract
In this paper, we investigate the implementation schemes of a single-scale wavelet transform processor using magnetostatic surface wave (MSSW) devices. There are three implementation schemes: the interdigital transducer, the meander line transducer and the grating transducer. Because the interdigital transducer has excellent properties, namely, good frequency characteristic and low insertion loss, we use the interdigital transducer as the implementation scheme of a single-scale wavelet transform processor using MSSW device.
In the paper, we also present the solutions to the three key problems: the direct coupling between the input transducer and the output transducer, the insertion loss, and the loss characteristics of the gyromagnetic film having an influence on the wavelet transform processor. There are two methods of reducing the direct coupling between the input transducer and the output transducer: increasing the distance between the input transducer and the output transducer, and placing a metal “wall” between the input transducer and the output transducer. There also are two methods of reducing the insertion loss of a single-scale wavelet transform processor using a MSSW device for scale: the appropriate thickness of the yttrium iron garnet (YIG) film and the uniform magnetic field.The smaller the ferromagnetic resonance linewidth of the gyromagnetic film , the smaller the magnetostatic wave propagation loss.
The Influence of Limited Dynamic Response of the Indicator Detector in a Swan-Ganz Catheter on the Overestimation of Cardiac Output Measurement By Means of Thermodilution
Authors: Gawlikowski Maciej , Pustelny Tadeusz 
Published: May 2018

Abstract
Nowadays the “gold clinical standard” of hemodynamics diagnostic and cardiac output measurements is pulmonary artery catheterization by means of the Swan-Ganz catheter and thermodilution. The method itself is sensitive to numerous disturbances which cause inaccurate results. One of the well-known disadvantages of thermodilution is the overestimation of results at low values of cardiac output. This effect may concern the limited slew rate of the thermoelement mounted at the tip of the catheter. In this paper the relationship between the dynamic response of the thermoelement and the uncertainty of cardiac output measurements by means of thermodilution has been investigated theoretically and experimentally.
Energy of Intrinsic Mode Function for Gas-Liquid Flow Pattern Identification
Authors: Sun Zhiqiang , Gong Hui 
Published: May 2018

Abstract
Gas-liquid flows abound in a great variety of industrial processes. Correct recognition of the regimes of a gasliquid flow is one of the most formidable challenges in multiphase flow measurement. Here we put forward a novel approach to the classification of gas-liquid flow patterns. In this method a flow-pattern map is constructed based on the average energy of intrinsic mode function and the volumetric void fraction of gas-liquid mixture. The intrinsic mode function is extracted from the pressure fluctuation across a bluff body using the empirical mode decomposition technique. Experiments adopting air and water as the working fluids are conducted in the bubble, plug, slug, and annular flow patterns at ambient temperature and atmospheric pressure. Verification tests indicate that the identification rate of the flow-pattern map developed exceeds 90%. This approach is appropriate for the gas-liquid flow pattern identification in practical applications.
Rapid Prototyping Methodology of Embedded Controlacquisition System
Authors: Augustyn Jacek , Bień Andrzej 
Published: May 2018

Abstract
Modern control and measurement systems are equipped with interfaces to operate in local area networks and are typically intended to perform complicated data processing and control algorithms. The authors propose a digital system for rapid prototyping of target application devices. The concept solution separates the processing and control section from the hardware interface and user interface section. Both sections constitute independent ARM-based controllers interconnected via a direct USB link. Popular libraries can be used and low-level procedures developed, which enhances the system’s economic viability. A test unit developed for the purpose of the study was built around a SoC ARM7 microsystem and an off-the-shelf palmtop device. It demonstrated a continuous data stream transfer capability up to 150 kB per second, which was sufficient to monitor the performance of an electricity line.
The examination of biophysical parameters of skin (transepidermal water loss, skin hydration and pH value) in different body regions of ponies
Authors: Szczepanik M.P. , Wilkołek P.M. , Pluta M. , Adamek Ł.R. , Pomorski Z.J.H. 
Published: May 2018

Abstract
The purpose of this study was to evaluate transepidermal water loss, skin hydration and skin pH in normal ponies. Sixteen ponies of both sexes were examined in the study. Measurements were taken from seven different sites: the neck region, the shoulder, thorax, lumbar, inguinal, lip region and the auricle. In each of the regions transepidermal water loss (TEWL), skin hydration and skin pH were measured. For transepidermal water loss, the lowest values were observed in the lumbar region (9.71g/hm2), while the highest values were observed in the lip region (22.35 g/hm2). In the case of skin hydration the lowest values were observed for the thorax region (2.13 CU), and the highest for the lip region (41.81 CU). For skin pH, the lowest results were obtained in the lumbar region (6.93), and the highest in the lip region (7.96).
Seroprevalence of BHV-1 (bovine herpesvirus type 1) among non-vaccinated dairy cattle herds with respiratory disorders
Authors: Rypuła K. , Płoneczka-Janeczko K. , Kita J. , Kumala A. , Żmudziński J.F. 
Published: May 2018

Abstract
The objective of this study was to estimate a herd-level seroprevalence of bovine herpesvirus type 1 (BHV-1) in herds with clinical symptoms of the respiratory tract. Eighty-three herds with suspected BHV-1 infection were selected and divided into two categories with respect to their size: small (n=27) and large herds (n=56). Samples were collected from calves, heifers and cows older than 24 months. Seroprevalence was determined using the gB ELISA test. The herd level seroprevalence was estimated as 53% (44/83) in the tested herds, 11.1% (3/27) in the small herds and 73.2% (41/56) in the large herds. Our study suggests that the current biosecurity measures still warrant improvement.
Inflammation- and axotomy-induced changes in cocaine- and amphetamine-regulated transcript peptide-like immunoreactive (CART-LI) nervous structures in the porcine descending colon
Authors: Burliński P.J. 
Published: May 2018

Abstract
This study reports on changes in CART-like immunoreactive (CART-LI) nerve structures in the porcine descending colon during chemically driven inflammation and after axotomy. The distribution pattern of CART-LI nerve structures was studied using doublelabeling immunofluorescence technique in the circular muscle layer, myenteric (MP), outer submucous (OSP) and inner submucous plexuses (ISP) and also in the mucosal layer of the porcine descending colon in physiological conditions as well as under pathological factors. In the control animals, CART-LI perikarya have been shown to constitute 5.11% ± 0.64, 4.03% ± 1.17 and 0.05% ± 0.04 in MP, OSP and ISP, respectively.
Changes in CART-immunoreactivity depended on the pathological factor and the part of the enteric nervous system (ENS) studied. Numbers of CART-LI perikarya amounted to 2.77% ± 0.64, 2.60% ± 0.36 and 0.26% ± 0.19 during chemically-induced colitis and 3.04% ± 0.88, 2.46% ± 0.8 and 0.43% ± 0.09 after axotomy in MP, OSP and ISP, respectively.
Both studied pathological processes also caused an increase in the number of CART-LI nerve fibers in the circular muscle as well as in the mucosal layer.
Occurence, Swarming Behaviour and of Laying Eggs in Two Brachycera Species (Diptera: Tabanidae, Dolichopodidae) From Syria
Authors: Popescu–Mirceni Răzvan 
Published: May 2018

Abstract
The paper presents two dipteran species of Brachycera suborder which belong to the families Tabanidae and Dolichopodidae, reported from Syria for the first time. Egg laying in Tabanusquatuornotatus Meigen, 1820 and swarming in Medetera saxatilis Collin, 1941 were observed and photographed; drawings of the external morphology were also made as well as of the male genitalia of the second species.