bluuebunny/crossref_metadata_2025_split huggingface dataset:
The dynamics of microturbines lubricated using unconventional agents
Authors: Kiciński J. 
Published: June 2015

Abstract
The paper presents the research results of the microturbines dynamics with power of a few to several hundred KW. They are combined heat and power (CHP) units (generating heat and electricity) for houses and for municipalities in the form of Autonomous Energy Regions (ARE). These are key technologies for energy sector with respect to the distributed generation and for small-scale eco-power engineering. The following examples will refer only to the several selected research projects coordinated by the IMP PAN (Institute of Fluid- Flow Machinery of the Polish Academy of Sciences) in Gdansk. The paper will focus on the dynamics of rotors and bearings lubricated by means of low boiling agents, i.e., by means of turbine working medium. Analysis of hydrodynamic instability phenomena, including the development of oil whirl and oil whip has also been carried out
Fast-decision identification algorithm of emission source pattern in database
Authors: Dudczyk J. , Kawalec A. 
Published: June 2015

Abstract
This article presents Fast-decision Identification Algorithm (FdIA) of Source Emission (SE) in DataBase (DB). The aim of this identification process is to define signal vector (V) in the form of distinctive features of this signal which is received in the process of its measurement. Superheterodyne ELectronic INTelligence (ELINT) receiver in the measure procedure was used. The next step in identification process is comparison vector with pattern in DB and calculation of decision function. The aim of decision function is to evaluate similarity degree between vector and pattern. Identification process mentioned above differentiates copies of radar of the same type which is a special test challenge defined as Specific Emitter Identification (SEI). The authors of this method drew up FdIA and three-stage parameterization by the implementation of three different ways of defining the degree of similarity between vector and pattern (called ’Compare procedure’). The algorithm was tested on hundreds of signal vectors coming from over a dozen copies of radars of the same type. Fast-decision Identification Algorithm which was drawn up and implemented makes it possible to create Knowledge Base which is an integral part of Expert DataBase. As a result, the amount of the ambiguity of decisions in the process of Source Emission Identification is minimized
Approximated fast estimator for the shape parameter of generalized Gaussian distribution for a small sample size
Authors: Krupiński R. 
Published: June 2015

Abstract
Most estimators of the shape parameter of generalized Gaussian distribution (GGD) assume asymptotic case when there is available infinite number of observations, but in the real case, there is only available a set of limited size. The most popular estimator for the shape parameter, i.e., the maximum likelihood (ML) method, has a larger variance with a decreasing sample size. A very high value of variance for a very small sample size makes this estimation method very inaccurate. A new fast approximated method based on the standardized moment to overcome this limitation is introduced in the article. The relative mean square error (RMSE) was plotted for the range 0.3-3 of the shape parameter for comparison with other methods. The method does not require any root finding, any long look-up table or multi step approach, therefore it is suitable for real-time data processing
Polynomial chaos expansion method in estimating probability distribution of rotor-shaft dynamic responses
Authors: Lasota R. , Stocki R. , Tauzowski P. , Szolc T. 
Published: June 2015

Abstract
The main purpose of the study is an assessment of computational efficiency of selected numerical methods for estimation of vibrational response statistics of a large multi-bearing turbo-generator rotor-shaft system. The effective estimation of the probability distribution of structural responses is essential for robust design optimization and reliability analysis of such systems. The analyzed scatter of responses is caused by random residual unbalances as well as random stiffness and damping parameters of the journal bearings. A proper representation of these uncertain parameters leads to multidimensional stochastic models. Three estimation techniques are compared: Monte Carlo sampling, Latin hypercube sampling and the sparse polynomial chaos expansion method. Based on the estimated values of the first four statistical moments the probability density function of the maximal vibration amplitude is evaluated by the maximal entropy principle method. The method is inherently suited for an accurate representation of the probability density functions with an exponential behavior, which appears to be characteristic for the investigated rotor-shaft responses. Performing multiple numerical tests for a range of sample sizes it was found that the sparse polynomial chaos method provides the best balance between the accuracy and computational effectiveness in estimating the unknown probability distribution of the maximal vibration amplitude
Coherence investigations of DC voltage group standard
Authors: Musioł K. , Makowski P. , Skubis T. 
Published: June 2015

Abstract
A method of checking coherence of comparison results of primary DC voltage group standards is described in the paper. Usefulness of the proposed method was proved by coherence investigation of DC voltage group standard kept in the Central Military Calibration Laboratory (CWOM, Warsaw, Poland). Results obtained for the group of five Fluke DC voltage standards prove very good coherence of voltage differences results and confirmed accuracy of DC voltage unit in the CWOM at the level of 10-6
Influence of convective heat and mass conditions in MHD flow of nanofluid
Authors: Shehzad S.A. , Hayat T. , Alsaedi A. 
Published: June 2015

Abstract
This article aims to investigate the two-dimensional magnetohydrodynamic (MHD) boundary layer flow of nanofluid. Convective mass condition is introduced. Analysis has been discussed in the presence of an applied magnetic field. The Brownian motion and thermophoresis effects are incorporated. The arising nonlinear problems are first converted to ordinary differential equations and then series solutions are constructed. Convergence of series solutions is examined through plots and numerical values. Results are plotted and discussed for the temperature and concentration. Numerical computations for skin-friction coefficient, local Nusselt and Sherwood numbers are performed and analyzed. Comparison with the previous limiting case is noted in an excellent agreement
Advanced control and design methods of the auxiliary resonant commutated pole inverter
Authors: Karyś S. 
Published: June 2015

Abstract
This paper presents several methods that enable the reduction of power loss in the auxiliary resonant commutated pole inverter - ARCP. Presented methods can be divided into static and dynamic ones. The static methods are related to an appropriate design of the inverter, whereas dynamic ones to advanced control of the power transistors. A variety of design and control methods are presented together with their advantages and disadvantages. The new control method of the current in the resonant branch is described. The main benefits of the proposed extended control method and their constrains are shown
Application of quantum cascade lasers to trace gas detection
Authors: Bielecki Z. , Stacewicz T. , Wojtas J. , Mikołajczyk J. 
Published: June 2015

Abstract
The potential of Quantum Cascade Laser technology has been recently harnessed in industry, medicine and military to create a range of original infrared gas sensors. These sensors have opened up many new applications due to compact size, excellent sensitivity, robust construction and low power requirements. They rely on infrared absorption spectroscopy to determine identity and quantity of gases. The measurement of these gases has relied on different technologies including multi-pass spectroscopy, photoacoustic spectroscopy, cavity ring down spectroscopy, and their various modifications. In this review paper some technologies are described in terms of its advantages/disadvantages in many application. The results of own works about methane, ammonia, nitric oxide, nitrous oxide, and carbonyl sulfide detection are presented as well
Analysis of positioning error and its impact on high frequency properties of differential signal coupler
Authors: Zmuda M. , Szczepański S. , Kozieł S. 
Published: June 2015

Abstract
This paper presents the analysis of the effect of differential signal coupler positioning accuracy on its high frequency performance parameters for contact-less high speed chip-to-chip data transmission on PCB application. Our considerations are continuation of the previous works on differential signal coupler concept, design methodology and analysis for high speed data transmission monitoring. The theoretical analysis of possible coupler positioning innaccuracies is extended for representative design cases by simulations carried out using EM simulator. The results reported here confirm that the concept of contactless monitoring of high speed chip-to-chip data transmission in a pair of coupled microstrip lines is of practically usefulness without applying the expensive and precise positioning system
Positivity of a class of fractional descriptor continuous-time nonlinear systems
Authors: Kaczorek T. 
Published: June 2015

Abstract
The positivity of a class of fractional descriptor continuous-time nonlinear systems is addressed by the use of the Weierstrass- Kronecker decomposition of the pencil of linear part of nonlinear system. Sufficient conditions for the positivity are established and illustrated by an example of fractional continuous-time descriptor nonlinear systems
Synthesis, characterization, and biological activities of oxovanadium(IV) and cadmium(II) complexes with reduced Schiff bases derived from N,Nʹ-o-phenylenebis(salicylideneimine)
Authors: Belaid Sabrina , Benali-Baïtich Ouassini , Bouet Gilles , Landreau Anne 
Published: June 2015

AbstractNew oxovanadium(IV) and cadmium(II) complexes with reduced Schiff bases derived from N,Nʹ- o-phenylenebis(salicylideneimine) have been synthesized and characterized using infrared and UVvisible spectra, ESR, and thermogravimetry. The complexes were identified as [ML] · (H
Electrochemical investigation of NaOH–Na2O–Na2O2–H2O–NaH melt by EMF measurements and cyclic voltammetry
Authors: Klečka Antonín , Langová Šárka , Raška Pavel , Leško Juraj , Pěnčík Roman 
Published: June 2015

AbstractThermodynamic activity of sodium oxide and oxidation potential in NaOH-Na
Density, refractive index, and viscosity of binary systems composed of ionic liquids ([Cnmim]Cl, n = 2, 4) and three dipolar aprotic solvents at T = 288.15–318.15 K
Authors: Bai Lu , Li Shu-Ni , Zhai Quan-Guo , Jiang Yu-Cheng , Hu Man-Cheng 
Published: June 2015

AbstractThermophysical properties, such as density (ρ), refractive index (n
Gas permeation processes in biogas upgrading: A short review
Authors: Kárászová Magda , Sedláková Zuzana , Izák Pavel 
Published: June 2015

AbstractBiogas upgrading is a widely studied and discussed topic. Many different technologies have been employed to obtain biomethane from biogas. Methods like water scrubbing or pressure swing adsorption are commonly used and can be declared as well established. Membrane gas permeation found its place among the biogas upgrading methods some years ago. Here, we try to summarize the progress in the implementation of gas permeation in biogas upgrading. Gas permeation has been already accepted as a commercially feasible method for CO
Monodisperse cross-linked polystyrene nanospheres by emulsifier-free miniemulsion polymerization
Authors: Liang Kai , Liu Qingquan , Peng Meixuan 
Published: June 2015

AbstractCross-linked cationic polystyrene (CCPS) nanospheres with monodispersity were successfully generated by soap-free miniemulsion polymerization of styrene and divinylbenzene with 2,2′-azobis (2-amidinopropane) dihydrochloride as a water-soluble initiator. The effects of output power of the homogenizer and the concentration of the initiator and cross-linking agent on the particle size and coefficient of variation of CCPS nanospheres were systematically investigated and discussed. The weight percent of N element on the particle surface and the ζ potential were determined as different initiator concentrations were employed for the preparation of CCPS nanospheres. Furthermore, the technique of nitrogen adsorption/desorption was applied to characterize the specific surface area and the total pore volume of the CCPS nanospheres, which were generated from different amounts of divinylbenzene. Overall, the present study provides a simple route for producing cross-linked polymer nanospheres with monodispersity.
Use of Depth Measure for Multivariate Functional Data in Disease Prediction: An Application to Electrocardiograph Signals
Authors: Tarabelloni Nicholas , Ieva Francesca , Biasi Rachele , Maria Paganoni Anna 
Published: June 2015

AbstractIn this paper we develop statistical methods to compare two independent samples of multivariate functional data that differ in terms of covariance operators. In particular we generalize the concept of depth measure to this kind of data, exploiting the role of the covariance operators in weighting the components that define the depth. Two simulation studies are carried out to validate the robustness of the proposed methods and to test their effectiveness in some settings of interest. We present an application to Electrocardiographic (ECG) signals aimed at comparing physiological subjects and patients affected by Left Bundle Branch Block. The proposed depth measures computed on data are then used to perform a nonparametric comparison test among these two populations. They are also introduced into a generalized regression model aimed at classifying the ECG signals.
Assessing flow regime alterations in a temporary river – the River Celone case study
Authors: De Girolamo Anna Maria , Lo Porto Antonio , Pappagallo Giuseppe , Gallart Francesc 
Published: June 2015

Abstract
In this paper, we present an approach to evaluate the hydrological alterations of a temporary river. In these rivers, it is expected that anthropogenic pressures largely modify low-flow components of the flow regime with consequences for aquatic habitat and diversity in invertebrate species. First, by using a simple hydrological index (IARI) river segments of the Celone stream (southern Italy) whose hydrological regime is significantly influenced by anthropogenic activities have been identified. Hydrological alteration has been further classified through the analysis of two metrics: the degree (Mf) and the predictability of dry flow conditions (Sd6). Measured streamflow data were used to calculate the metrics in present conditions (impacted). Given the lack of data from pristine conditions, simulated streamflow time series were used to calculate the metrics in reference conditions. The Soil and Water Assessment Tool (SWAT) model was used to estimate daily natural streamflow. Hydrological alterations associated with water abstractions, point discharges and the presence of a reservoir were assessed by comparing the metrics (Mf, Sd6) before and after the impacts. The results show that the hydrological regime of the river segment located in the upper part of the basin is slightly altered, while the regime of the river segment downstream of the reservoir is heavily altered. This approach is intended for use with ecological metrics in defining the water quality status and in planning streamflow management activities.
Some geo-botanic features of the Kurile Islands
Authors: Ganzei Kirill 
Published: June 2015

Abstract
Results of many years research of geo-botanic of the Kurile Islands are presented in article. Vegetation spatial structure of the Kurile Islands is conditioned by complex interactions of endogenous and exogenous factors. Meridional extension for almost 1200 km determines a significant climatic differenciation within archipelago. It is resulted in changes of vertical vegetation zones in the different regions of Kurile Islands. System of hot and cold currents in the adjacent sea water is the factor of asymmetry of vegetation. Special traits of archipelago are determined by the volcanic activity
Safeguarding Creditors in the Course of Simplified Reduction of Subscribed Capital
Authors: Drnovšek Gregor 
Published: June 2015

Abstract
The central characteristics of simplified subscribed capital reduction are its very narrow purpose, and a weakened regime of safeguarding of creditors. The main and, frankly, only purpose of the institution is recovery. It is namely most difficult to expect from a distressed company undergoing simplified subscribed capital reduction, which is first and foremost intended for recovery, to safeguard its creditors in the same extent as in the case of ordinary reduction of subscribed capital. The article provides an analysis of the intent and purpose of simplified subscribed capital reduction and the regulations governing the safeguarding of creditors. Using a descriptive method, subject matter analysis, and comparative legal analysis of the issue, the article elaborates on why regulations governing the safeguarding of creditors are too weak with regard to the effects brought forth by this type of subscribed capital reduction and proposes appropriate supplementation and amendments to applicable legislation.
Electrical transport in titania nanoparticles embedded in conducting polymer matrix
Authors: Dey Ashis 
Published: June 2015

Abstract
Conducting polymer-wide band gap semiconductor nanocomposites are prepared by polymerizing pyrrole in the presence of colloidal titanium dioxide (TiO2) sol. Characterizations of nanocomposites are carried out by Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM) and X-ray diffraction (XRD). Direct current (dc) and alternating current (ac) conductivities of nanocomposites have been investigated as a function of temperature and frequency for different concentrations of polypyrrole (PPY). The temperature dependence of ac conductivity suggests that small polaron tunneling occurs in the charge transfer process. A very large dielectric constant of about 13,000 at room temperature has been observed. The interface between PPY and TiO2 plays an important role in yielding a large dielectric constant in the composite.
Other-initiated repair in Yélî Dnye: Seeing eye-to-eye in the language of Rossel Island
Authors: Levinson Stephen C. 
Published: June 2015

AbstractOther-initiated repair (OIR) is the fundamental back-up system that ensures the effectiveness of human communication in its primordial niche, conversation. This article describes the interactional and linguistic patterns involved in other-initiated repair in Yélî Dnye, the Papuan language of Rossel Island, Papua New Guinea. The structure of the article is based on the conceptual set of distinctions described in Chapters 1 and 2 of the special issue, and describes the major properties of the Rossel Island system, and the ways in which OIR in this language both conforms to familiar European patterns and deviates from those patterns. Rossel Island specialities include lack of a Wh-word open class repair initiator, and a heavy reliance on visual signals that makes it possible both to initiate repair and confirm it non-verbally. But the overall system conforms to universal expectations.
Lexical selection and the evolution of language units
Authors: Hadikin Glenn 
Published: June 2015

AbstractIn this paper I discuss similarities and differences between a potential new model of language development - lexical selection, and its biological equivalent - natural selection. Based on Dawkins' (1976) concept of the meme I discuss two units of language and explore their potential to be seen as linguistic replicators. The central discussion revolves around two key parts - the units that could potentially play the role of replicators in a lexical selection system and a visual representation of the model proposed. draw on work by Hoey (2005), Wray (2008) and Sinclair (1996, 1998) for the theoretical basis; Croft (2000) is highlighted as a similar framework. Finally brief examples are taken from the free online corpora provided by the corpus analysis tool Sketch Engine (Kilgarriff, Rychly, Smrz and Tugwell 2004) to ground the discussion in real world communicative situations. The examples highlight the point that different situational contexts will allow for different units to flourish based on the local social and linguistic environment. The paper also shows how a close look at the specific context and strings available to a language user at any given moment has potential to illuminate different aspects of language when compared with a more abstract approach.
“Ecumenical Recognition” in the Faith and Order Movement
Authors: Hietamäki Minna 
Published: June 2015

Abstract“Full recognition” has been the expressed goal of ecumenical endeavours since the beginning of modern ecumenism. This article investigates the development of the idea of “recognition” in the ecumenical movement as represented by the Commission on Faith and Order. The text introduces a theoretical framework for investigating the idea of recognition, with special attention paid to the theological impact of the Roman Catholic Church’s official entry into the ecumenical movement after the Second Vatican Council. The article notes that the idea of recognition has received little attention as an independent concept in ecumenical theology until recently. However, the notion of recognition could function as an overall concept, bringing together various aspects of the ecumenical movement.
Discovery and development of photochromic diarylethenes
Authors: Irie Masahiro 
Published: June 2015

Abstract
A new family of thermally irreversible photochromic molecules, named “diarylethene,” was serendipitously discovered a quarter of a century ago. The diarylethenes undergo thermally irreversible, fatigue resistant, ultrafast and highly sensitive photochromic reactions. Many of diarylethenes can undergo photochromic reactions even in the single-crystalline phase. The outstanding photochromic performance attracts considerable attention from both scientific and technological points of view, and stimulates research from fundamental physico-chemical aspects to various applications. Here, it is reported how such thermally irreversible photochromic diarylethenes were discovered and developed.