bluuebunny/crossref_metadata_2025_split huggingface dataset:
Baryon Physics and the Missing Satellites Problem
Authors: Del Popolo A. 
Published: February 2017

Abstract
In the present paper, we combine the model of Del Popolo (2009) with the models dealing with tidal stripping, tidal heating, and photo-heating to study how baryon physics can solve the missing satellite problem (MSP) and the too-big-to-fail (TBTF) problem. Applying to the Via Lactea II (VL2) subhaloes a series of corrections similar to those of Brooks et al. (2013), namely, a Zolotov et al. (2012)-like correction obtained with our model, and further correcting for the UV heating and tidal stripping, we find that the number of massive and luminous satellites is in agreement with that number observed in the Milky Way. In conclusion, baryon physics is of fundamental importance in solving the ΛCDM small scale problems.
Databases of Publications and Observations as a Part of the Crimean Astronomical Virtual Observatory
Authors: Shlyapnikov A. , Bondar’ N. , Gorbunov M. 
Published: February 2017

AbstractWe describe the main principles of formation of databases (DBs) with information about astronomical objects and their physical characteristics derived from observations obtained at the Crimean Astrophysical Observatory (CrAO) and published in the “Izvestiya of the CrAO” and elsewhere. Emphasis is placed on the DBs missing from the most complete global library of catalogs and data tables, VizieR (supported by the Center of Astronomical Data, Strasbourg). We specially consider the problem of forming a digital archive of observational data obtained at the CrAO as an interactive DB related to database objects and publications. We present examples of all our DBs as elements integrated into the Crimean Astronomical Virtual Observatory. We illustrate the work with the CrAO DBs using tools of the International Virtual Observatory: Aladin, VOPlot, VOSpec, in conjunction with the VizieR and Simbad DBs.
Assessing Quality of City Development by the Acquired Criteria of Landscape Urbanism
Authors: Stauskis Gintaras , Deveikienė Vaiva 
Published: February 2017

Abstract
We may see modern urbanism as a collection of many successful developments as well as a series of endless mistakes and repeated failures. The paper focuses on the analysis of existing and former urban planning and design patterns in aspect of efficiency of applied methods to achieve higher quality referring to the philosophy and practice of Landscape Urbanism. The Missionaries Block in Vilnius City serves as a case study for assessing its development in three distinguishable periods by the set of quality criteria derived from Landscape Urbanism theories and practices. The assessment results disclose an evident drop in the overall quality of the selected site’s development in the recent period. The paper discusses if and how one may use the method employed hereby for programming and shaping the future regeneration and redevelopment of existing urban setting.
Structure of hydrophobic core in plant carboxylesterase
Authors: Banach Mateusz , Konieczny Leszek , Wiśniowski Zdzisław , Roterman Irena 
Published: February 2017

Abstract
The fuzzy oil drop model was applied to characterize the hydrophobic core structure in plant carboxylesterase. The characteristics revealed the status of β-sheets in the central part of the molecule as discordant as opposed to the expected hydrophobicity distribution. Particularly, the β-strands and helices in close proximity to the enzymatic residues recognized as discordant with respect to the ideal hydrophobicity distribution of hydrophobic core are of high importance. It is assumed that this local irregularity is the form of coding the specificity of enzymes. The protein under consideration appears to be the next example proving this assumption.
Automatic sleep stage classification of single-channel EEG by using complex-valued convolutional neural network
Authors: Zhang Junming , Wu Yan 
Published: February 2017

AbstractMany systems are developed for automatic sleep stage classification. However, nearly all models are based on handcrafted features. Because of the large feature space, there are so many features that feature selection should be used. Meanwhile, designing handcrafted features is a difficult and time-consuming task because the feature designing needs domain knowledge of experienced experts. Results vary when different sets of features are chosen to identify sleep stages. Additionally, many features that we may be unaware of exist. However, these features may be important for sleep stage classification. Therefore, a new sleep stage classification system, which is based on the complex-valued convolutional neural network (CCNN), is proposed in this study. Unlike the existing sleep stage methods, our method can automatically extract features from raw electroencephalography data and then classify sleep stage based on the learned features. Additionally, we also prove that the decision boundaries for the real and imaginary parts of a complex-valued convolutional neuron intersect orthogonally. The classification performances of handcrafted features are compared with those of learned features via CCNN. Experimental results show that the proposed method is comparable to the existing methods. CCNN obtains a better classification performance and considerably faster convergence speed than convolutional neural network. Experimental results also show that the proposed method is a useful decision-support tool for automatic sleep stage classification.
Morphology and surface topography of Ti6Al4V lattice structure fabricated by selective laser sintering
Authors: Maszybrocka J. , Stwora A. , Gapiński B. , Skrabalak G. , Karolus M. 
Published: February 2017

Abstract
Construction of metallic implants with a porous structure that mimics the biomechanical properties of bone is one of the challenges of orthopedic regenerative medicine. The selective laser sintering technique (SLS) allows the production of complex geometries based on three-dimensional model, which offers the prospect of preparing porous metal implants, in which stiffness and porosity can be precisely adjusted to the individual needs of the patient. This requires an interdisciplinary approach to design, manufacturing and testing of porous structures manufactured by selective sintering. An important link in this process is the ability to assess the surface topography of the struts of porous structure. The paper presents a qualitative assessment of the surface morphology based on SEM studies and methodology that allows for quantitative assessment of stereometric structure based on micro-tomographic measurements.
Analytical and experimental determination of the parasitic parameters in high-frequency inductor
Authors: Zdanowski M. , Barlik R. 
Published: February 2017

Abstract
The paper presents the results of calculations, simulations, and measurements of parasitic capacitance of winding in ferrite inductor suitable for cooperating with 2 kW DC-DC boost converter built using SiC JFET transistors, operating with a switching frequency of 100 kHz. The inductor winding is made of litz wire in a two-layer configuration. The lumped model of inductor winding was adopted. The results of analytical calculations have been compared with the results obtained from experimental investigations based on the resonance effect.
Multimodal face recognition method with two-dimensional hidden Markov model
Authors: Bobulski J. 
Published: February 2017

Abstract
The paper presents a new solution for the face recognition based on two-dimensional hidden Markov models. The traditional HMM uses one-dimensional data vectors, which is a drawback in the case of 2D and 3D image processing, because part of the information is lost during the conversion to one-dimensional features vector. The paper presents a concept of the full ergodic 2DHMM, which can be used in 2D and 3D face recognition. The experimental results demonstrate that the system based on two dimensional hidden Markov models is able to achieve a good recognition rate for 2D, 3D and multimodal (2D+3D) face images recognition, and is faster than ICP method.
High-dose biotin therapy leading to false biochemical endocrine profiles: validation of a simple method to overcome biotin interference
Authors: Piketty Marie-Liesse , Prie Dominique , Sedel Frederic , Bernard Delphine , Hercend Claude , Chanson Philippe , Souberbielle Jean-Claude 
Published: February 2017

Abstract

Background:
High-dose biotin therapy is beneficial in progressive multiple sclerosis (MS) and is expected to be adopted by a large number of patients. Biotin therapy leads to analytical interference in many immunoassays that utilize streptavidin-biotin capture techniques, yielding skewed results that can mimic various endocrine disorders. We aimed at exploring this interference, to be able to remove biotin and avoid misleading results.

Methods:
We measured free triiodothyronine (fT3), free thyroxine (fT4), thyroid-stimulating hormone (TSH), parathyroid homrone (PTH), 25-hydroxyvitamin D (25OHD), follicle-stimulating hormone (FSH), luteinizing hormone (LH), prolactin, C-peptide, cortisol (Roche Diagnostics assays), biotin and its main metabolites (liquid chromatography tandem mass spectrometry) in 23 plasmas from MS patients and healthy volunteers receiving high-dose biotin, and in 39 biotin-unsupplemented patients, before and after a simple procedure (designated N5) designed to remove biotin by means of streptavidin-coated microparticles. We also assayed fT4, TSH and PTH in the 23 high-biotin plasmas using assays not employing streptavidin-biotin binding.

Results:
The biotin concentration ranged from 31.7 to 1160 µg/L in the 23 high-biotin plasmas samples. After the N5 protocol, the biotin concentration was below the detection limit in all but two samples (8.3 and 27.6 μg/L). Most hormones results were abnormal, but normalized after N5. All results with the alternative methods were normal except two slight PTH elevations. In the 39 biotin-unsupplemented patients, the N5 protocol did not affect the results for any of the hormones, apart from an 8.4% decrease in PTH.

Conclusions:
We confirm that most streptavidin-biotin hormone immunoassays are affected by high biotin concentrations, leading to a risk of misdiagnosis. Our simple neutralization method efficiently suppresses biotin interference.
Electronic Commerce
Authors: Slavko Đerić 
Published: February 2017

Summary
Electronic commerce can be defined in different ways. Any definition helps to understand and explain that concept as better as possible.. Electronic commerce is a set of procedures and technologies that automate the tasks of financial transactions using electronic means. Also, according to some authors, electronic commerce is defined as a new concept, which is being developed and which includes process of buying and selling or exchanging products, services or information via computer networks, including the Internet. Electronic commerce is not limited just to buying and selling, but it also includes all pre-sales and after-sales ongoing activities along the supply chain. Introducing electronic commerce, using the Internet and Web services in business, realizes the way to a completely new type of economy - internet economy.
More Efficient Operations of the Company with the Help of Communication Technologies
Authors: Tešić Mirjana 
Published: February 2017

Abstract
The success of the modern enterprise depends not only on its ability to develop a good product / service, to form an adequate price and your offer makes available to customers, but also on how to communicate with the target audience. For the management of modern enterprises, including small and medium-sized enterprises (SMEs), is a major challenge that all activities are carried out in a proper manner and that adds value to which the various interested stakeholders. In recent times, are very important, and information and communication systems in the new economy because the rapid technological progress in the ICT sector started the process of creating a new economy, a new growth and economic development. Successful management is increasingly based on interactive communication and the adopting of marketing communication new technologies, all of which contribute to more efficient business for a company.
Hypercompetition & Fiscal Attractiveness
Authors: Rougé Jean-François , Chopov Borislav 
Published: February 2017

SummaryHypercompetition is at the very center of modern economies. As a consequence, both states and enterprises have been heavily engaged in an amoral power game (Colonomos, 2005) based exclusively on strength where tax systems have a prominent role. An obscure fiscal war takes place firstly between states seeking to increase their attractiveness. On the other hand, firms fight against states to optimize their revenues. Therefore, the aim of this paper is to discuss the components and the implications of the competition between states expressed through the establishment of tax havens and the launch of merciless fiscal policies. At the same time, enterprises try to shape the existing laws in a manner that favors their interests, using also aggressive fiscal strategies.
The Effects of Bankruptcy on the Predictability of Price Formation Processes on Warsaw’s Stock Market
Authors: Fiedor Paweł , Hołda Artur 
Published: February 2017

Abstract
In this study we investigate how bankruptcy affects the market behaviour of prices of stocks on Warsaw’s Stock Exchange. As the behaviour of prices can be seen in a myriad of ways, we investigate a particular aspect of this behaviour, namely the predictability of these price formation processes. We approximate their predictability as the structural complexity of logarithmic returns. This method of analysing predictability of price formation processes using information theory follows closely the mathematical definition of predictability, and is equal to the degree to which redundancy is present in the time series describing stock returns. We use Shannon’s entropy rate (approximating Kolmogorov-Sinai entropy) to measure this redundancy, and estimate it using the Lempel-Ziv algorithm, computing it with a running window approach over the entire price history of 50 companies listed on the Warsaw market which have gone bankrupt in the last few years. This enables us not only to compare the differences between predictability of price formation processes before and after their filing for bankruptcy, but also to compare the changes in predictability over time, as well as divided into different categories of companies and bankruptcies. There exists a large body of research analysing the efficiency of the whole market and the predictability of price changes en large, but only a few detailed studies analysing the influence of external stimulion the efficiency of price formation processes. This study fills this gap in the knowledge of financial markets, and their response to extreme external events.
Evaluation of the economic viability of forest management by the Forest Experimental Station in Krynica
Authors: Kożuch Anna , Ryś Magdalena 
Published: February 2017

Abstract
The Forest Experimental Station (FES) in Krynica is a unit specialized in teaching activities. However, it also fulfils other educational, ecological and social functions. Additionally, as the FES in Krynica operates on the free market and needs to be competitive, primarily with respect to the raw timber prizes, it is also a forest management unit that can be subjected to economic evaluation. The aim of this study was to analyze the income, costs and overall financial outcome of the FES in Krynica for the years of 2008–2012. A financial analysis, using indicators of financial liquidity, profitability, economic activity and liabilities, was also carried out to evaluate the economic effectiveness and efficiency of the forest management unit’s operation. The data was obtained from financial documents, particularly balance sheets, as well as profit and loss accounts.
In the years of 2008–2012, mean income and costs of the FES in Krynica amounted to 7 121.1 thous. PLN/year and 6 478.2 thous. PLN/year, respectively. The net financial outcome was positive and amounted to a mean of 628.8 thous. PLN/year. The proportion of the sale income compared to the total income from all activities carried out by the unit increased from 93% to 96%. This included income from the sale of products, goods and materials, which increased by 57% mainly due to an increase in the income from timber sales (ca. 83%). Costs incurred by the unit increased as well, being 40% higher in 2012 than in 2008, while the cost level indicator decreased by ca. 8%. In the examined time period, the economic effectiveness and efficiency of the unit’s operation improved, as evidenced by the increasing profits and the values of the profitability indicators.
Results obtained in the comprehensive analysis of the financial situation in the FES in Krynica provide a basis for the evaluation of economic processes and for appropriate decision making concerning wealth management and the direction of future development. In the evaluation of the economic and financial activity of the FES in Krynica, the increase inprofitability in the analysed time period, as concluded from the indicator of turnover profitability, was particularly noteworthy. The financial indicator values greatly exceed reference values only on the level of financial liquidity. The liability indicators served as evidence of obvious financial independence of the FES in Krynica.
Communities of fungi in decomposed wood of oak and pine
Authors: Kwaśna Hanna , Mazur Andrzej , Łabędzki Andrzej , Kuźmiński Robert , Łakomy Piotr 
Published: February 2017

Abstract
The abundance and diversity of wood decomposing fungi were investigated by isolating and cultivating filamentous fungi from wood and by detection of fruit bodies of ascomycetous and basidiomycetous fungi. The objective was to study the impact of forest management on fungi in 100-year-old oak and 87-year-old Scots pine forests in Northern Poland. Fungi were found on coarse woody debris of decayed stumps and fallen logs, boughs and branches in each of the three (managed and unmanaged) examined stands. In total, 226 species of Oomycota and fungi were recorded. Oak wood was colonized by one species of Oomycota and 141 species of fungi including Zygomycota (19 species), Ascomycota (103 species) and Basidiomycota (19 species). Scots pine wood was also colonized by one species of Oomycota and 138 species of fungi including Zygomycota (19 species), Ascomycota (90 species) and Basidiomycota (29 species). In the first, second and third stages of decomposition, the oak wood was colonized by 101, 89 and 56 species of fungi respectively and pine wood was colonized by 82, 103 and 47 species respectively. Eighty three of the observed species (37%) occurred on both types of wood, while the other species displayed nutritional preferences. A decrease in the number of species with advancing decay indicates the necessity for a continuous supply of dead wood to the forest ecosystem.
This supply would secure the continuity of fauna and flora and guarantee a stable forest development. The nutritional and ecological preferences of many fungal species furthermore indicate the necessity of supplying the forests with wood of different species.
In commercially managed forests the results obtained here will aid in: (i) the development of strategies for effective dead wood management in the context of forest productivity and future wood stock growth, as well as (ii) finding a compromise between forest management requirements and environmental protection.
Optimal control problem for the equation of vibrations of an elastic plate
Authors: Guliyev Hamlet F. , Seyfullaeva Khayala I. 
Published: February 2017

Abstract
An optimal control problem for the
vibration equation of an elastic plate is considered when
the control function is included in the coefficient of the highest order derivative and the right-hand side of the equation. The solvability of the initial boundary value problem is shown, the theorem on the existence of an optimal control is
proved and a necessary condition of optimality in the form of an integral equation is obtained.
Quasi-nilpotent perturbations of the generalized Kato spectrum
Authors: Benharrat Mohammed , Messirdi Bekkai 
Published: February 2017

Abstract
In this paper, we show that the generalized Kato spectrum of a bounded operator in a Banach space is invariant under perturbation by commuting quasi-nilpotent operators, and the Kato spectrum is stable under additive commuting nilpotent perturbations. Our results are used to give an equivalent definition of the generalized Kato spectrum.
Screening of catalysts and reaction conditions for the direct conversion of corncob xylan to xylitol
Authors: Ribeiro Lucília S. , Órfão José J.M. , Pereira Manuel F.R. 
Published: February 2017

Abstract
Different supported metal catalysts were tested for the one-pot transformation of corncob xylan to xylitol. The influence of several factors, such as catalytic support, nature of metal, metal loading, amount of catalyst, hydrogen pressure and reaction temperature, was investigated. The results revealed that xylan can be converted into xylitol with a yield close to 80% after 2 h of reaction using Ru supported on carbon nanotubes (CNT, 0.4 wt% metal loading) with excellent stability after repeated use, at a temperature of 170°C and an H2 pressure of 50 bar. The yield of xylitol achieved is one of the highest ever reported for the direct conversion of xylan to xylitol using an environmentally friendly process.
Physicochemical Characterization and Thermal Decomposition of Garin Maiganga Coal
Authors: Nyakuma Bemgba Bevan , Jauro Aliyu 
Published: February 2017

Abstract
The paper examined physicochemical and thermal characteristics of the newly discovered Garin Maiganga (GMG) coal from Nigeria. The physicochemical characterization comprised of elemental, proximate, calorific value, and classification (rank) analyses. Thermal analysis was examined using combined Thermogravimetric (TG) and Derivative Thermogravimetric analyses (DTG). Hence, the coal was heated from 30°C to 1000°C at 20°C/min under inert conditions to examine its thermal degradation behaviour and temperature profile characteristics (TPC). The results indicated that the GMG coal fuel properties consist of low Ash, Nitrogen, and Sulphur content. Moisture content was > 5%, Volatile Matter > 50%, Fixed Carbon > 22%, and Heating Value (HHV) 23.74 MJ/kg. Based on its fuel properties, the GMG coal can be classified as a Sub-Bituminous B, non-agglomerating low rank coal (LRC). The GMG coal TPCs – onset, peak, and offset temperatures – were 382.70°C, 454.60°C, and 527.80°C, respectively. The DTG profile revealed four (4) endothermic peaks corresponding to loss of moisture (drying), volatile matter (devolatization), and coke formation. The residual mass Rm was 50.16%, which indicates that higher temperatures above 1000°C are required for the complete pyrolytic decomposition of the GMG coal. In conclusion, the results indicate that the GMG coal is potentially suitable for future utilization in electric power generation and the manufacture of cement and steel.