bluuebunny/crossref_metadata_2025_split huggingface dataset:
Spectra for the Product of Gaussian Noises
Authors: Kish Laszlo Bela , Mingesz Robert , Gingl Zoltan , Granqvist Claes-Goran 
Published: May 2018

Abstract
Products of Gaussian noises often emerge as the result of non-linear detection techniques or as parasitic effects, and their proper handling is important in many practical applications, including fluctuation-enhanced sensing, indoor air or environmental quality monitoring, etc. We use Rice’s random phase oscillator formalism to calculate the power density spectra variance for the product of two Gaussian band-limited white noises with zero-mean and the same bandwidth W. The ensuing noise spectrum is found to decrease linearly from zero frequency to 2W, and it is zero for frequencies greater than 2W. Analogous calculations performed for the square of a single Gaussian noise confirm earlier results. The spectrum at non-zero frequencies, and the variance of the square of a noise, is amplified by a factor two as a consequence of correlation effects between frequency products. Our analytic results are corroborated by computer simulations.
Prony’S Method Used for Testing Harmonics and Interharmonics in Electrical Power Systems
Authors: Zygarlicki Jarosław , Mroczka Janusz 
Published: May 2018

Abstract
The article presents an application of Prony’s method with some known components in the analysis of electric power quality. Modifications of the Prony algorithm broaden the scope of method application. Modification of the filter of known components enables more accurate analysis of the parameters of unknown components and components with known or assumed frequencies. This article presents a comparison of the results of analyses conducted with the proposed algorithm for simulated and real signals and the results obtained by means of a commercial electric power quality testing device, operating in class A and using the Fourier transform. The proposed method enables to estimate the levels of the harmonic components, the frequency of the fundamental signal and real parameters of the interharmonic components, which are grouped and averaged in the contemporary monitoring equipment. Knowledge of the individual parameters of the interharmonics has considerable diagnostic importance while removing causes of incorrect operation affecting sensitive equipment in some electric power systems. Additionally, the algorithm is capable of analyzing exponentially damped components and finds its application in analysis of disturbances, for example, transient oscillations.
Systematic Errors of the Lidft Method: Analytical form and Verification by a Monte Carlo Method
Authors: Borkowski Józef 
Published: May 2018

Abstract
This paper derives analytical formulas for the systematic errors of the linear interpolated DFT (LIDFT) method when used to estimating multifrequency signal parameters and verifies this analysis using Monte-Carlo simulations. The analysis is performed on the version of the LIDFT method based on optimal approximation of the unit circle by a polygon using a pair of windows. The analytical formulas derived here take the systematic errors in the estimation of amplitude and frequency of component oscillations in the multifrequency signal as the sum of basic errors and the errors caused by each of the component oscillations. Additional formulas are also included to analyze particular quantities such as a signal consisting of two complex oscillations, and the analyses are verified using Monte-Carlo simulations.
Software Application for Calibration of Stereoscopic Camera Setups
Authors: Rzeszotarski Dariusz , Pełczyński Paweł 
Published: May 2018

Abstract
The article describes an application for calibration of a stereovision camera setup constructed for the needs of an electronic travel aid for the blind. The application can be used to calibrate any stereovision system consisting of two DirectShow compatible cameras using a reference checkerboard of known dimensions. A method for experimental verification of the correctness of the calibration is also presented. The developed software is intended for calibration of mobile stereovision systems that focus mainly on obstacle detection.
A Novel Method of Handling Tolerances for Analog Circuit Fault Diagnosis Based on Normal Quotient Distribution
Authors: Ao Yongcai , Shi Yibing , Zhang Wei , Li Xifeng 
Published: May 2018

Abstract
While the Slope Fault Model method can solve the soft-fault diagnosis problem in linear analog circuit effectively, the challenging tolerance problem is still unsolved. In this paper, a proposed Normal Quotient Distribution approach was combined with the Slope Fault Model to handle the tolerances problem in soft-fault diagnosis for analog circuit. Firstly, the principle of the Slope Fault Model is presented, and the huge computation of traditional Slope Fault Characteristic set was reduced greatly by the elimination of superfluous features. Several typical tolerance handling methods on the ground of the Slope Fault Model were compared. Then, the approximating distribution function of the Slope Fault Characteristic was deduced and sufficient conditions were given to improve the approximation accuracy. The monotonous and continuous mapping between Normal Quotient Distribution and standard normal distribution was proved. Thus the estimation formulas about the ranges of the Slope Fault Characteristic were deduced. After that, a new test-nodes selection algorithm based on the reduced Slope Fault Characteristic ranges set was designed. Finally, two numerical experiments were done to illustrate the proposed approach and demonstrate its effectiveness.
Analysis of beam elements of circular cross section using the absolute nodal coordinate formulation
Authors: Orzechowski Grzegorz 
Published: May 2018

Abstract
The beam elements, which are widely used in the absolute nodal coordinate formulation (ANCF) can be treated as isoparametric elements, and by analogy to the classical finite element analysis (FEA) are integrated with standard, spatial Gauss- Legendre quadratures. For this reason, the shape of the ANCF beam cross section is restricted only to the shape of rectangle.
In this paper, a distinct method of integration of ANCF elements based on continuum mechanics approach is presented. This method allows for efficient analysis of the ANCF beam elements with circular cross section. The integration of element vectors and matrices is performed by separation of the quadrature into the part that integrate along beam axis and the part that integrate in the beam cross section. Then, an alternative quadrature is used to integrate in the circular shape of the cross section. Since the number of integration points in the alternative quadrature corresponds to the number of points in the standard Gaussian quadrature the change in the shape of the cross section does not affects negatively the element efficiency.
The presented method was verified using selected numerical tests. They show good relatively agreement with the reference results. Apart from the analysis of the beams with the circular cross section, a possibility of further modifications in the methods of the element integration is also discussed. Due to the fact that locking influence on the convergence of the element is also observed, the methods of locking elimination in the proposed elements are also considered in the paper.
HybProbes-based real-time PCR assay for rapid detection of equine herpesvirus type 2 DNA
Authors: Osińska E. , Golke A. , Słońska A. , Cymerys J. , Bańbura M.W. , Dzieciątkowski T. 
Published: May 2018

Abstract
Equid herpesvirus type 2 (EHV-2) together with equid herpesvirus type 5 are members of Gammaherpesvirinae subfamily, genus Rhadinovirus. EHV-2 is one of major agents causing diseases of horses common worldwide. A possible role of EHV-2 in reactivating latent equid herpesvirus type-1 has been suggested, because reactivation of latent EHV-1 was always accompanied by EHV-2 replication. Variety techniques, including cell culture, PCR and its modifications, have been used to diagnose EHV-2 infections. The aim of this study was to develop, optimize and determine specificity of real-time PCR (qPCR) for EHV-2 DNA detection using HybProbesR chemistry and to evaluate clinical samples with this method. The analytical sensitivity of assay was tested using serial dilutions of viral DNA in range between 70 and 7x105 copies/ml. The limit of detection (LOD) was calculated using probit analysis and was determined as 56 copies/ml. In further studies 20 different clinical samples were tested for the presence of EHV-2. Described in-house qPCR method detected viral DNA in 5 of 20 specimens used. The results of this work show that developed HybProbes-based real-time PCR assay is very reliable and valuable for detection and quantification of equid herpesvirus type 2 DNA in different clinical samples. The high level of sensitivity, accuracy and rapidity provided by the LightCycler 2.0 instrument are favorable for the use of this system in the detection of EHV-2 DNA in veterinary virology.
Heart rate turbulence in healthy dogs and dogs with dilated cardiomyopathy
Authors: Noszczyk-Nowak A. 
Published: May 2018

Abstract
Heart rate turbulence (HRT) is modulated by the baroreceptor reflex and it was suggested that it could be used as a measure of autonomic dysfunction. Impaired HRT is of a significant prognostic value in humans after myocardial infarction, suffering from dilated cardiomyopathy and patients with heart failure. So far no studies were performed assessing the importance of HRT in dogs. The aim of this study was to prospectively evaluate the HRT turbulence onset (TO) and the turbulence slope (TS) in healthy dogs and in dogs with DCM and to compare the HRT in dogs with DCM that died during the first 30 days of observation and dogs with DCM that survived the first 30 days after the HRT analysis. The current study was aimed at determining reference value of the TO and TS of HRT in healthy dogs (control group) and dogs with dilated cardiomyopathy (DCM group). The tests were carried out on 30 healthy dogs and 30 dogs with DCM composed of Boxers, Doberman pinschers and Great Danes, of different sexes and body weights from 22 to 72 kg, aged between 1.5 and 11.5 years, submitted to the 24-hour Holter monitoring. HRT parameters were calculated using an HolCard software algorithm. TO is a percentage difference between the heart rate immediately following ventricular premature complex (VPC) and the heart rate immediately preceding VPC. TS corresponds to the steepest slope of the linear regression line for each sequence of five consecutive normal intervals in the local tachogram. The average TO in healthy dogs was determined as -13.55 ± 11.12%, TS was 21.33 ± 9.66 ms/RR. TO in dogs with DCM was determined as - 2.61 ± 2.1% and TS was 6.15 ± 3.86 ms/RR. Parameters of HRT were statistically significantly decreased (p<0.01) in dogs with DCM. HRT TO and TS were statistically significantly decreased in dogs with DCM. Dogs with DCM that survived more than 30 days of observation had HRT statistically significantly decreased in comparison to dogs with DCM that died after the 30’th day of observation. Decreased HRT parameters in dogs with DCM suggest an autonomic neuropathy which principally consists of the withdrawal of the cardiac parasympathetic tone. The more the autonomic neuropathy is advanced the faster the death of the dog with DCM might occur, with no correlation with the level of the heart failure.
Increased AST/ALT ratio in azotaemic dogs infected with Babesia canis
Authors: Zygner W. , Gójska-Zygner O. , Norbury L.J. , Wędrychowicz H. 
Published: May 2018

Abstract
The AST/ALT ratio was estimated in 182 dogs infected with Babesia canis. Among these dogs 65 had anaemia and 68 were azotaemic. Student’s t test was used to compare means of the AST/ALT ratio in anaemic and non-anaemic dogs, and in azotaemic and non-azotaemic dogs (p < 0.05). The differences in AST/ALT ratio between anaemic (1.52 ± 1.15) and non-anaemic (1.76 ± 1.34) dogs were statistically insignificant (p = 0.23), however, the comparison of AST/ALT ratio between azotaemic (2.68 ± 1.52) and non-azotaemic (1.08 ± 0.53) dogs revealed a significantly higher value of this index in azotaemic dogs (p = 0.00). The present results suggest that kidney injury contributed to increased AST activity in these dogs.
Characteristics of selected second-generation antiepileptic drugs used in dogs
Authors: Ziółkowski H. , Jaroszewski J.J. , Ziółkowska N. , Jasiecka A. 
Published: May 2018

Abstract
A significant number of cases of clinical canine epilepsy remain difficult to control in spite of the applied treatment. At the same time, the range of antiepileptic drugs is increasingly wide, which allows efficient treatment. In the present paper we describe the pharmacodynamics and pharmacokinetics of the newer antiepileptic drugs which were licensed after 1990 but are still not widely used in veterinary medicine. The pharmacokinetic profiles of six of these drugs were tested on dogs. The results of experimental studies suggest that second generation antiepileptic drugs may be applied in mono- as well as in poli- treatment of canine epilepsy because of the larger safety margin and more advantageous pharmacokinetic parameters. Knowledge of the drugs’ pharmacokinetics allows its proper clinical appliance, which, in turn, gives the chance to improve the efficiency of pharmacotherapy of canine epilepsy.
Bovine neonatal pancytopenia in calves in Poland
Authors: Jaśkowski J.M. , Polak M.P. , Marszałek A. , Nowak K. , Frąckowiak H. , Olechnowicz J. 
Published: May 2018

Abstract
Bovine neonatal pancytopenia (BNP), a newly emerged syndrome of discussed etiology in calves, has been diagnosed since 2006. Here we describe first cases of BNP in Poland. Between September 2008 and April 2011, 62 cases of BNP were diagnosed in dairy calves. Bleeding skin lesions were mostly pronounced in summer and early autumn. Severe thrombocytopenia was observed in all sick animals. All calves came from herds vaccinated against BVDV infection with PregSure BVD vaccine (Pfizer). Substitution of colostrum from dams of BNP positive calves with colostrum from dams from herds free of BNP was the only effective measure to avoid new cases in affected herds.
Robust constrained MPC stabilization of a CSTR
Authors: Oravec Juraj , Bakošová Monika 
Published: May 2018

Abstract
The paper addresses a case study of robust stabilization of a continuous stirred tank reactor using robust model-based predictive control with constrained input variables. One exothermic reaction runs in the reaction mixture and the reactor is modelled in the form of an uncertain polytopic system. The control approach is based on solution of a set of linear matrix inequalities. This formulation enables to use convex optimization methods to design a gain matrix of a state feedback controller in each control step. The task of stabilization is solved in assumed control conditions with respect to symmetric constraints on control inputs. The control performance achieved by robust constrained model-based predictive control is studied via simulations. Obtained results confirm that the robust constrained model-based predictive control ensures the stability demands and the quality requirements represented by chosen quadratic cost function.
Preparation and properties of bioactive packaging materials on the starch base
Authors: Smítková Hana , Marek Miroslav , Dobiáš Jaroslav 
Published: May 2018

Abstract
In this study the surface adjustment by two polymers with addition of preservatives of chosen packaging material on starch base with incorporated additives has been investigated. Its bioactive function was verified by measuring zones of inhibition and mutual comparison of bacteriocin released from samples coated with polymers. The best results were achieved when chosen sample containing 15 % of sawdust, 5 % of PVOH and 2 % of calcium stearate was coated by 30 % of Kombilak L1917 solution or 10 % copolyamide 6/12 solution. The addition of antimicrobial agents slightly increased hydrophilicity of coated samples. Immobilization of preservative had no significant effect on the mechanical strength of coated samples. For both types of relevant polymers used amount of immobilized Nisaplin was quite sufficient for effective inhibition of microbial cultures Lactobacillus Helveticus CH1.
New Faunistic Records of Spiders (Arachnida: Araneae) From Dobruja (Romania and Bulgaria)
Authors: Moscaliuc Liviu Aurel 
Published: May 2018

Abstract
A number of spider species were collected in 2011 and 2012 in various microhabitats in and around the village Letea (the Danube Delta, Romania) and on the Bulgarian Dobruja Black Sea coast. The results are the start of a proposed longer survey of the spider fauna in the area. The genus Spermophora Hentz, 1841 (with the species senoculata), Xysticus laetus Thorell, 1875 and Trochosahispanica Simon, 1870 are mentioned in the Romanian fauna for the first time. Floronia bucculenta (Clerck, 1757) is at the first record for the Bulgarian fauna. Diagnostic drawings and photographs are presented.
The Macrolepidoptera (Insecta) of Central Dobrogea (Romania)
Authors: Székely Levente 
Published: May 2018

Abstract
This study is a synthesis of the current knowledge regarding the Macrolepidoptera fauna from Central Dobrogea (south-eastern Romania) and it is based on the research done in the area since 2007. Most of the collecting has been done on salt steppes around the large lakes (sea lagoons) Razim (Razelm) and Sinoe (Histria, Plopu-Sarinasuf), but also in forested areas and rocky hills (Babadag Forest, Cheile Dobrogei, Gura Dobrogei, Cetatea Enisala etc.) from Central Dobrogea. The most remarkable results were obtained in the salt steppes (which have been very little studied before). From these areas, due to the research done in the last three years, three species of Noctuidae were published as new records for Romania: Cucullia argentina (Fabricius, 1787), Tarachidia candefacta (Hübner, [1831]) and Leucania punctosa (Treitschke, 1825). Furthermore, there have been found numerous very local and very rare species, which had previously been known in Romania based on very few individuals such as: Phyllodesma ilicifolia (Linnaeus, 1758), Hyles hippophaes (Esper, 1793), Dasycosa modesta (Staudinger, 1879), Megaspilates mundataria (Stoll, 1782), Idaea sericeata (Hübner, 1813), Paradrymonia vittata bulgarica de Freina, 1983, Grammodes bifasciata (Petagna, 1787), Symira dentinosa Freyer, 1839, Episema lederi Christoph, 1885, Saragossa siccanorum (Staudinger, 1870), Cardepia hartigi (Parenzan, 1981), Polia cherrug Rákosy & Wieser, 1997, Chersotis laeta macini Rákosy, Stangelmeier & Wieser, 1996, Chersotis fimbriola niculescui Rákosy, 1997, Diachrysia chryson deltaica Rákosy, 1996, Euxoa cos (Hübner, [1808]), Parocneria terebinthi (Freyer, 1838) etc. The species protected by Romanian and EU laws are commented. A total of 697 species of Macrolepidoptera from Central Dobrogea are listed. Ten species are new records for the fauna of Dobrogea and 237 species have been not reported previously in this geographical area.
Kopalińskie Lake as an example of an anthropogenic reservoir of the southern Baltic Sea coast
Authors: Cieśliński Roman , Olszewska Alicja 
Published: May 2018

Abstract
The aim of this study is to discuss the water balance of Kopalińskie Lake, which is one of a few reservoirs on the Polish coast formed from anthropogenic activity. To realize this aim, lake basin morphometry and catchment hydrography were characterized. Moreover, the influence of the sea and the physico-chemical characteristics of the lake water were defined. As a result, the main characteristics of the lake and its catchment were found. Common characteristics of Kopalińskie Lake, as well as the characteristics that differentiate this reservoir from the other coastal lakes located on the Polish coast are presented in this work.
RHYTHMIC MUSIC PEDAGOGY: A SCANDINAVIAN APPROACH TO MUSIC EDUCATION
Authors: Hauge Torunn Bakken 
Published: May 2018

ABSTRACT
Rhythmic music pedagogy is a relatively new Scandinavian approach to classroom music education that offers a variety of methods and strategies for teaching and learning music, especially within the performance of improvised and rhythmic music. This article is based on two earlier projects published in Norwegian, in which the concept of rytmisk musikkpedagogikk (or “rhythmic music pedagogy”) as well as its applications and implications were thoroughly described. This research confirms that rhythmic music pedagogy may be an effective strategy for learning music in general, but most especially for learning skills associated with ensemble musicianship and playing by ear. In a multicultural and fluid society in which there are tendencies toward passivity and fragmentation, it may be more important than ever to maintain the idea of music as a collaborative creative process that extends across borders; in this context, rhythmic music pedagogy can play a central role in children’s social development. As a social medium, ensemble playing requires the participant to decentralize socially, since the perspectives of the other participants are necessary for a successful performance. The activity’s general potential for re-structuring social settings and moving boundaries in a positive way should not be underestimated.
Biometry of adult rosalia longicorn Rosalia alpina (L.) (Coleoptera: Cerambycidae) from the Polish Carpathians: a preliminary study
Authors: Michalcewicz Jakub , Ciach Michał 
Published: May 2018

ABSTRACT.The body size of xylophagous beetles is determined by the host plant species, as well as by the amount and quality of breeding material. Consequently, the biometric traits of adults can be used as an indicator of the attractiveness of the breeding material and the quality of a habitat. The paper presents selected biometric traits of rosalia longicornRosalia alpina(L.) imagines in three populations from the Beskid Niski Mts (Carpathian Mts, south-eastern Poland). Two populations of this beetle from managed forests and one from a protected area in the Magura National Park were compared. The former developed on two different host plants (European beechFagus sylvaticaand wych elmUlmus glabra), the latter on European beech. No significant differences were found between the biometric traits of imagines from the three populations. No intersexual differences were found for the width of the pronotum in any of the populations, but females had longer elytra than males in all the populations. The lack of body size differences in these populations potentially indicates that this species occurs only in favourable habitat conditions. The limited species range and the patchy distribution of the rosalia longicorn are indications of its stringent habitat requirements and its dependence on forest management. Habitats supplying a sufficient amount and quality of suitable breeding material for the development of the rosalia longicorn should be protected.